drivers/infiniband/hw/mlx5/qp.c

   1 /*
   2  * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <rdma/ib_umem.h>
  35 #include <rdma/ib_cache.h>
  36 #include <rdma/ib_user_verbs.h>
  37 #include "mlx5_ib.h"
  38
  39 /* not supported currently */
  40 static int wq_signature;
  41
  42 enum {
  43         MLX5_IB_ACK_REQ_FREQ    = 8,
  44 };
  45
  46 enum {
  47         MLX5_IB_DEFAULT_SCHED_QUEUE     = 0x83,
  48         MLX5_IB_DEFAULT_QP0_SCHED_QUEUE = 0x3f,
  49         MLX5_IB_LINK_TYPE_IB            = 0,
  50         MLX5_IB_LINK_TYPE_ETH           = 1
  51 };
  52
  53 enum {
  54         MLX5_IB_SQ_STRIDE       = 6,
  55         MLX5_IB_CACHE_LINE_SIZE = 64,
  56 };
  57
  58 static const u32 mlx5_ib_opcode[] = {
  59         [IB_WR_SEND]                            = MLX5_OPCODE_SEND,
  60         [IB_WR_LSO]                             = MLX5_OPCODE_LSO,
  61         [IB_WR_SEND_WITH_IMM]                   = MLX5_OPCODE_SEND_IMM,
  62         [IB_WR_RDMA_WRITE]                      = MLX5_OPCODE_RDMA_WRITE,
  63         [IB_WR_RDMA_WRITE_WITH_IMM]             = MLX5_OPCODE_RDMA_WRITE_IMM,
  64         [IB_WR_RDMA_READ]                       = MLX5_OPCODE_RDMA_READ,
  65         [IB_WR_ATOMIC_CMP_AND_SWP]              = MLX5_OPCODE_ATOMIC_CS,
  66         [IB_WR_ATOMIC_FETCH_AND_ADD]            = MLX5_OPCODE_ATOMIC_FA,
  67         [IB_WR_SEND_WITH_INV]                   = MLX5_OPCODE_SEND_INVAL,
  68         [IB_WR_LOCAL_INV]                       = MLX5_OPCODE_UMR,
  69         [IB_WR_REG_MR]                          = MLX5_OPCODE_UMR,
  70         [IB_WR_MASKED_ATOMIC_CMP_AND_SWP]       = MLX5_OPCODE_ATOMIC_MASKED_CS,
  71         [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD]     = MLX5_OPCODE_ATOMIC_MASKED_FA,
  72         [MLX5_IB_WR_UMR]                        = MLX5_OPCODE_UMR,
  73 };
  74
  75 struct mlx5_wqe_eth_pad {
  76         u8 rsvd0[16];
  77 };
  78
  79 enum raw_qp_set_mask_map {
  80         MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID         = 1UL << 0,
  81 };
  82
  83 struct mlx5_modify_raw_qp_param {
  84         u16 operation;
  85
  86         u32 set_mask; /* raw_qp_set_mask_map */
  87         u8 rq_q_ctr_id;
  88 };
  89
  90 static void get_cqs(enum ib_qp_type qp_type,
  91                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
  92                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq);
  93
  94 static int is_qp0(enum ib_qp_type qp_type)
  95 {
  96         return qp_type == IB_QPT_SMI;
  97 }
  98
  99 static int is_sqp(enum ib_qp_type qp_type)
 100 {
 101         return is_qp0(qp_type) || is_qp1(qp_type);
 102 }
 103
 104 static void *get_wqe(struct mlx5_ib_qp *qp, int offset)
 105 {
 106         return mlx5_buf_offset(&qp->buf, offset);
 107 }
 108
 109 static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n)
 110 {
 111         return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift));
 112 }
 113
 114 void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n)
 115 {
 116         return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE));
 117 }
 118
 119 /**
 120  * mlx5_ib_read_user_wqe() - Copy a user-space WQE to kernel space.
 121  *
 122  * @qp: QP to copy from.
 123  * @send: copy from the send queue when non-zero, use the receive queue
 124  *        otherwise.
 125  * @wqe_index:  index to start copying from. For send work queues, the
 126  *              wqe_index is in units of MLX5_SEND_WQE_BB.
 127  *              For receive work queue, it is the number of work queue
 128  *              element in the queue.
 129  * @buffer: destination buffer.
 130  * @length: maximum number of bytes to copy.
 131  *
 132  * Copies at least a single WQE, but may copy more data.
 133  *
 134  * Return: the number of bytes copied, or an error code.
 135  */
 136 int mlx5_ib_read_user_wqe(struct mlx5_ib_qp *qp, int send, int wqe_index,
 137                           void *buffer, u32 length,
 138                           struct mlx5_ib_qp_base *base)
 139 {
 140         struct ib_device *ibdev = qp->ibqp.device;
 141         struct mlx5_ib_dev *dev = to_mdev(ibdev);
 142         struct mlx5_ib_wq *wq = send ? &qp->sq : &qp->rq;
 143         size_t offset;
 144         size_t wq_end;
 145         struct ib_umem *umem = base->ubuffer.umem;
 146         u32 first_copy_length;
 147         int wqe_length;
 148         int ret;
 149
 150         if (wq->wqe_cnt == 0) {
 151                 mlx5_ib_dbg(dev, "mlx5_ib_read_user_wqe for a QP with wqe_cnt == 0. qp_type: 0x%x\n",
 152                             qp->ibqp.qp_type);
 153                 return -EINVAL;
 154         }
 155
 156         offset = wq->offset + ((wqe_index % wq->wqe_cnt) << wq->wqe_shift);
 157         wq_end = wq->offset + (wq->wqe_cnt << wq->wqe_shift);
 158
 159         if (send && length < sizeof(struct mlx5_wqe_ctrl_seg))
 160                 return -EINVAL;
 161
 162         if (offset > umem->length ||
 163             (send && offset + sizeof(struct mlx5_wqe_ctrl_seg) > umem->length))
 164                 return -EINVAL;
 165
 166         first_copy_length = min_t(u32, offset + length, wq_end) - offset;
 167         ret = ib_umem_copy_from(buffer, umem, offset, first_copy_length);
 168         if (ret)
 169                 return ret;
 170
 171         if (send) {
 172                 struct mlx5_wqe_ctrl_seg *ctrl = buffer;
 173                 int ds = be32_to_cpu(ctrl->qpn_ds) & MLX5_WQE_CTRL_DS_MASK;
 174
 175                 wqe_length = ds * MLX5_WQE_DS_UNITS;
 176         } else {
 177                 wqe_length = 1 << wq->wqe_shift;
 178         }
 179
 180         if (wqe_length <= first_copy_length)
 181                 return first_copy_length;
 182
 183         ret = ib_umem_copy_from(buffer + first_copy_length, umem, wq->offset,
 184                                 wqe_length - first_copy_length);
 185         if (ret)
 186                 return ret;
 187
 188         return wqe_length;
 189 }
 190
 191 static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type)
 192 {
 193         struct ib_qp *ibqp = &to_mibqp(qp)->ibqp;
 194         struct ib_event event;
 195
 196         if (type == MLX5_EVENT_TYPE_PATH_MIG) {
 197                 /* This event is only valid for trans_qps */
 198                 to_mibqp(qp)->port = to_mibqp(qp)->trans_qp.alt_port;
 199         }
 200
 201         if (ibqp->event_handler) {
 202                 event.device     = ibqp->device;
 203                 event.element.qp = ibqp;
 204                 switch (type) {
 205                 case MLX5_EVENT_TYPE_PATH_MIG:
 206                         event.event = IB_EVENT_PATH_MIG;
 207                         break;
 208                 case MLX5_EVENT_TYPE_COMM_EST:
 209                         event.event = IB_EVENT_COMM_EST;
 210                         break;
 211                 case MLX5_EVENT_TYPE_SQ_DRAINED:
 212                         event.event = IB_EVENT_SQ_DRAINED;
 213                         break;
 214                 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
 215                         event.event = IB_EVENT_QP_LAST_WQE_REACHED;
 216                         break;
 217                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
 218                         event.event = IB_EVENT_QP_FATAL;
 219                         break;
 220                 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
 221                         event.event = IB_EVENT_PATH_MIG_ERR;
 222                         break;
 223                 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
 224                         event.event = IB_EVENT_QP_REQ_ERR;
 225                         break;
 226                 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
 227                         event.event = IB_EVENT_QP_ACCESS_ERR;
 228                         break;
 229                 default:
 230                         pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn);
 231                         return;
 232                 }
 233
 234                 ibqp->event_handler(&event, ibqp->qp_context);
 235         }
 236 }
 237
 238 static int set_rq_size(struct mlx5_ib_dev *dev, struct ib_qp_cap *cap,
 239                        int has_rq, struct mlx5_ib_qp *qp, struct mlx5_ib_create_qp *ucmd)
 240 {
 241         int wqe_size;
 242         int wq_size;
 243
 244         /* Sanity check RQ size before proceeding */
 245         if (cap->max_recv_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz)))
 246                 return -EINVAL;
 247
 248         if (!has_rq) {
 249                 qp->rq.max_gs = 0;
 250                 qp->rq.wqe_cnt = 0;
 251                 qp->rq.wqe_shift = 0;
 252                 cap->max_recv_wr = 0;
 253                 cap->max_recv_sge = 0;
 254         } else {
 255                 if (ucmd) {
 256                         qp->rq.wqe_cnt = ucmd->rq_wqe_count;
 257                         qp->rq.wqe_shift = ucmd->rq_wqe_shift;
 258                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 259                         qp->rq.max_post = qp->rq.wqe_cnt;
 260                 } else {
 261                         wqe_size = qp->wq_sig ? sizeof(struct mlx5_wqe_signature_seg) : 0;
 262                         wqe_size += cap->max_recv_sge * sizeof(struct mlx5_wqe_data_seg);
 263                         wqe_size = roundup_pow_of_two(wqe_size);
 264                         wq_size = roundup_pow_of_two(cap->max_recv_wr) * wqe_size;
 265                         wq_size = max_t(int, wq_size, MLX5_SEND_WQE_BB);
 266                         qp->rq.wqe_cnt = wq_size / wqe_size;
 267                         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_rq)) {
 268                                 mlx5_ib_dbg(dev, "wqe_size %d, max %d\n",
 269                                             wqe_size,
 270                                             MLX5_CAP_GEN(dev->mdev,
 271                                                          max_wqe_sz_rq));
 272                                 return -EINVAL;
 273                         }
 274                         qp->rq.wqe_shift = ilog2(wqe_size);
 275                         qp->rq.max_gs = (1 << qp->rq.wqe_shift) / sizeof(struct mlx5_wqe_data_seg) - qp->wq_sig;
 276                         qp->rq.max_post = qp->rq.wqe_cnt;
 277                 }
 278         }
 279
 280         return 0;
 281 }
 282
 283 static int sq_overhead(struct ib_qp_init_attr *attr)
 284 {
 285         int size = 0;
 286
 287         switch (attr->qp_type) {
 288         case IB_QPT_XRC_INI:
 289                 size += sizeof(struct mlx5_wqe_xrc_seg);
 290                 /* fall through */
 291         case IB_QPT_RC:
 292                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 293                         max(sizeof(struct mlx5_wqe_atomic_seg) +
 294                             sizeof(struct mlx5_wqe_raddr_seg),
 295                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 296                             sizeof(struct mlx5_mkey_seg));
 297                 break;
 298
 299         case IB_QPT_XRC_TGT:
 300                 return 0;
 301
 302         case IB_QPT_UC:
 303                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 304                         max(sizeof(struct mlx5_wqe_raddr_seg),
 305                             sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 306                             sizeof(struct mlx5_mkey_seg));
 307                 break;
 308
 309         case IB_QPT_UD:
 310                 if (attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)
 311                         size += sizeof(struct mlx5_wqe_eth_pad) +
 312                                 sizeof(struct mlx5_wqe_eth_seg);
 313                 /* fall through */
 314         case IB_QPT_SMI:
 315         case MLX5_IB_QPT_HW_GSI:
 316                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 317                         sizeof(struct mlx5_wqe_datagram_seg);
 318                 break;
 319
 320         case MLX5_IB_QPT_REG_UMR:
 321                 size += sizeof(struct mlx5_wqe_ctrl_seg) +
 322                         sizeof(struct mlx5_wqe_umr_ctrl_seg) +
 323                         sizeof(struct mlx5_mkey_seg);
 324                 break;
 325
 326         default:
 327                 return -EINVAL;
 328         }
 329
 330         return size;
 331 }
 332
 333 static int calc_send_wqe(struct ib_qp_init_attr *attr)
 334 {
 335         int inl_size = 0;
 336         int size;
 337
 338         size = sq_overhead(attr);
 339         if (size < 0)
 340                 return size;
 341
 342         if (attr->cap.max_inline_data) {
 343                 inl_size = size + sizeof(struct mlx5_wqe_inline_seg) +
 344                         attr->cap.max_inline_data;
 345         }
 346
 347         size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg);
 348         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN &&
 349             ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB) < MLX5_SIG_WQE_SIZE)
 350                         return MLX5_SIG_WQE_SIZE;
 351         else
 352                 return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB);
 353 }
 354
 355 static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr,
 356                         struct mlx5_ib_qp *qp)
 357 {
 358         int wqe_size;
 359         int wq_size;
 360
 361         if (!attr->cap.max_send_wr)
 362                 return 0;
 363
 364         wqe_size = calc_send_wqe(attr);
 365         mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size);
 366         if (wqe_size < 0)
 367                 return wqe_size;
 368
 369         if (wqe_size > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 370                 mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
 371                             wqe_size, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 372                 return -EINVAL;
 373         }
 374
 375         qp->max_inline_data = wqe_size - sq_overhead(attr) -
 376                               sizeof(struct mlx5_wqe_inline_seg);
 377         attr->cap.max_inline_data = qp->max_inline_data;
 378
 379         if (attr->create_flags & IB_QP_CREATE_SIGNATURE_EN)
 380                 qp->signature_en = true;
 381
 382         wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size);
 383         qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB;
 384         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 385                 mlx5_ib_dbg(dev, "wqe count(%d) exceeds limits(%d)\n",
 386                             qp->sq.wqe_cnt,
 387                             1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 388                 return -ENOMEM;
 389         }
 390         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 391         qp->sq.max_gs = attr->cap.max_send_sge;
 392         qp->sq.max_post = wq_size / wqe_size;
 393         attr->cap.max_send_wr = qp->sq.max_post;
 394
 395         return wq_size;
 396 }
 397
 398 static int set_user_buf_size(struct mlx5_ib_dev *dev,
 399                             struct mlx5_ib_qp *qp,
 400                             struct mlx5_ib_create_qp *ucmd,
 401                             struct mlx5_ib_qp_base *base,
 402                             struct ib_qp_init_attr *attr)
 403 {
 404         int desc_sz = 1 << qp->sq.wqe_shift;
 405
 406         if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
 407                 mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
 408                              desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
 409                 return -EINVAL;
 410         }
 411
 412         if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
 413                 mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
 414                              ucmd->sq_wqe_count, ucmd->sq_wqe_count);
 415                 return -EINVAL;
 416         }
 417
 418         qp->sq.wqe_cnt = ucmd->sq_wqe_count;
 419
 420         if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
 421                 mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
 422                              qp->sq.wqe_cnt,
 423                              1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
 424                 return -EINVAL;
 425         }
 426
 427         if (attr->qp_type == IB_QPT_RAW_PACKET) {
 428                 base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 429                 qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
 430         } else {
 431                 base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
 432                                          (qp->sq.wqe_cnt << 6);
 433         }
 434
 435         return 0;
 436 }
 437
 438 static int qp_has_rq(struct ib_qp_init_attr *attr)
 439 {
 440         if (attr->qp_type == IB_QPT_XRC_INI ||
 441             attr->qp_type == IB_QPT_XRC_TGT || attr->srq ||
 442             attr->qp_type == MLX5_IB_QPT_REG_UMR ||
 443             !attr->cap.max_recv_wr)
 444                 return 0;
 445
 446         return 1;
 447 }
 448
 449 static int first_med_uuar(void)
 450 {
 451         return 1;
 452 }
 453
 454 static int next_uuar(int n)
 455 {
 456         n++;
 457
 458         while (((n % 4) & 2))
 459                 n++;
 460
 461         return n;
 462 }
 463
 464 static int num_med_uuar(struct mlx5_uuar_info *uuari)
 465 {
 466         int n;
 467
 468         n = uuari->num_uars * MLX5_NON_FP_BF_REGS_PER_PAGE -
 469                 uuari->num_low_latency_uuars - 1;
 470
 471         return n >= 0 ? n : 0;
 472 }
 473
 474 static int max_uuari(struct mlx5_uuar_info *uuari)
 475 {
 476         return uuari->num_uars * 4;
 477 }
 478
 479 static int first_hi_uuar(struct mlx5_uuar_info *uuari)
 480 {
 481         int med;
 482         int i;
 483         int t;
 484
 485         med = num_med_uuar(uuari);
 486         for (t = 0, i = first_med_uuar();; i = next_uuar(i)) {
 487                 t++;
 488                 if (t == med)
 489                         return next_uuar(i);
 490         }
 491
 492         return 0;
 493 }
 494
 495 static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari)
 496 {
 497         int i;
 498
 499         for (i = first_hi_uuar(uuari); i < max_uuari(uuari); i = next_uuar(i)) {
 500                 if (!test_bit(i, uuari->bitmap)) {
 501                         set_bit(i, uuari->bitmap);
 502                         uuari->count[i]++;
 503                         return i;
 504                 }
 505         }
 506
 507         return -ENOMEM;
 508 }
 509
 510 static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari)
 511 {
 512         int minidx = first_med_uuar();
 513         int i;
 514
 515         for (i = first_med_uuar(); i < first_hi_uuar(uuari); i = next_uuar(i)) {
 516                 if (uuari->count[i] < uuari->count[minidx])
 517                         minidx = i;
 518         }
 519
 520         uuari->count[minidx]++;
 521         return minidx;
 522 }
 523
 524 static int alloc_uuar(struct mlx5_uuar_info *uuari,
 525                       enum mlx5_ib_latency_class lat)
 526 {
 527         int uuarn = -EINVAL;
 528
 529         mutex_lock(&uuari->lock);
 530         switch (lat) {
 531         case MLX5_IB_LATENCY_CLASS_LOW:
 532                 uuarn = 0;
 533                 uuari->count[uuarn]++;
 534                 break;
 535
 536         case MLX5_IB_LATENCY_CLASS_MEDIUM:
 537                 if (uuari->ver < 2)
 538                         uuarn = -ENOMEM;
 539                 else
 540                         uuarn = alloc_med_class_uuar(uuari);
 541                 break;
 542
 543         case MLX5_IB_LATENCY_CLASS_HIGH:
 544                 if (uuari->ver < 2)
 545                         uuarn = -ENOMEM;
 546                 else
 547                         uuarn = alloc_high_class_uuar(uuari);
 548                 break;
 549
 550         case MLX5_IB_LATENCY_CLASS_FAST_PATH:
 551                 uuarn = 2;
 552                 break;
 553         }
 554         mutex_unlock(&uuari->lock);
 555
 556         return uuarn;
 557 }
 558
 559 static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 560 {
 561         clear_bit(uuarn, uuari->bitmap);
 562         --uuari->count[uuarn];
 563 }
 564
 565 static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 566 {
 567         clear_bit(uuarn, uuari->bitmap);
 568         --uuari->count[uuarn];
 569 }
 570
 571 static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn)
 572 {
 573         int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE;
 574         int high_uuar = nuuars - uuari->num_low_latency_uuars;
 575
 576         mutex_lock(&uuari->lock);
 577         if (uuarn == 0) {
 578                 --uuari->count[uuarn];
 579                 goto out;
 580         }
 581
 582         if (uuarn < high_uuar) {
 583                 free_med_class_uuar(uuari, uuarn);
 584                 goto out;
 585         }
 586
 587         free_high_class_uuar(uuari, uuarn);
 588
 589 out:
 590         mutex_unlock(&uuari->lock);
 591 }
 592
 593 static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state)
 594 {
 595         switch (state) {
 596         case IB_QPS_RESET:      return MLX5_QP_STATE_RST;
 597         case IB_QPS_INIT:       return MLX5_QP_STATE_INIT;
 598         case IB_QPS_RTR:        return MLX5_QP_STATE_RTR;
 599         case IB_QPS_RTS:        return MLX5_QP_STATE_RTS;
 600         case IB_QPS_SQD:        return MLX5_QP_STATE_SQD;
 601         case IB_QPS_SQE:        return MLX5_QP_STATE_SQER;
 602         case IB_QPS_ERR:        return MLX5_QP_STATE_ERR;
 603         default:                return -1;
 604         }
 605 }
 606
 607 static int to_mlx5_st(enum ib_qp_type type)
 608 {
 609         switch (type) {
 610         case IB_QPT_RC:                 return MLX5_QP_ST_RC;
 611         case IB_QPT_UC:                 return MLX5_QP_ST_UC;
 612         case IB_QPT_UD:                 return MLX5_QP_ST_UD;
 613         case MLX5_IB_QPT_REG_UMR:       return MLX5_QP_ST_REG_UMR;
 614         case IB_QPT_XRC_INI:
 615         case IB_QPT_XRC_TGT:            return MLX5_QP_ST_XRC;
 616         case IB_QPT_SMI:                return MLX5_QP_ST_QP0;
 617         case MLX5_IB_QPT_HW_GSI:        return MLX5_QP_ST_QP1;
 618         case IB_QPT_RAW_IPV6:           return MLX5_QP_ST_RAW_IPV6;
 619         case IB_QPT_RAW_PACKET:
 620         case IB_QPT_RAW_ETHERTYPE:      return MLX5_QP_ST_RAW_ETHERTYPE;
 621         case IB_QPT_MAX:
 622         default:                return -EINVAL;
 623         }
 624 }
 625
 626 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq,
 627                              struct mlx5_ib_cq *recv_cq);
 628 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq,
 629                                struct mlx5_ib_cq *recv_cq);
 630
 631 static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn)
 632 {
 633         return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index;
 634 }
 635
 636 static int mlx5_ib_umem_get(struct mlx5_ib_dev *dev,
 637                             struct ib_pd *pd,
 638                             unsigned long addr, size_t size,
 639                             struct ib_umem **umem,
 640                             int *npages, int *page_shift, int *ncont,
 641                             u32 *offset)
 642 {
 643         int err;
 644
 645         *umem = ib_umem_get(pd->uobject->context, addr, size, 0, 0);
 646         if (IS_ERR(*umem)) {
 647                 mlx5_ib_dbg(dev, "umem_get failed\n");
 648                 return PTR_ERR(*umem);
 649         }
 650
 651         mlx5_ib_cont_pages(*umem, addr, npages, page_shift, ncont, NULL);
 652
 653         err = mlx5_ib_get_buf_offset(addr, *page_shift, offset);
 654         if (err) {
 655                 mlx5_ib_warn(dev, "bad offset\n");
 656                 goto err_umem;
 657         }
 658
 659         mlx5_ib_dbg(dev, "addr 0x%lx, size %zu, npages %d, page_shift %d, ncont %d, offset %d\n",
 660                     addr, size, *npages, *page_shift, *ncont, *offset);
 661
 662         return 0;
 663
 664 err_umem:
 665         ib_umem_release(*umem);
 666         *umem = NULL;
 667
 668         return err;
 669 }
 670
 671 static void destroy_user_rq(struct ib_pd *pd, struct mlx5_ib_rwq *rwq)
 672 {
 673         struct mlx5_ib_ucontext *context;
 674
 675         context = to_mucontext(pd->uobject->context);
 676         mlx5_ib_db_unmap_user(context, &rwq->db);
 677         if (rwq->umem)
 678                 ib_umem_release(rwq->umem);
 679 }
 680
 681 static int create_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 682                           struct mlx5_ib_rwq *rwq,
 683                           struct mlx5_ib_create_wq *ucmd)
 684 {
 685         struct mlx5_ib_ucontext *context;
 686         int page_shift = 0;
 687         int npages;
 688         u32 offset = 0;
 689         int ncont = 0;
 690         int err;
 691
 692         if (!ucmd->buf_addr)
 693                 return -EINVAL;
 694
 695         context = to_mucontext(pd->uobject->context);
 696         rwq->umem = ib_umem_get(pd->uobject->context, ucmd->buf_addr,
 697                                rwq->buf_size, 0, 0);
 698         if (IS_ERR(rwq->umem)) {
 699                 mlx5_ib_dbg(dev, "umem_get failed\n");
 700                 err = PTR_ERR(rwq->umem);
 701                 return err;
 702         }
 703
 704         mlx5_ib_cont_pages(rwq->umem, ucmd->buf_addr, &npages, &page_shift,
 705                            &ncont, NULL);
 706         err = mlx5_ib_get_buf_offset(ucmd->buf_addr, page_shift,
 707                                      &rwq->rq_page_offset);
 708         if (err) {
 709                 mlx5_ib_warn(dev, "bad offset\n");
 710                 goto err_umem;
 711         }
 712
 713         rwq->rq_num_pas = ncont;
 714         rwq->page_shift = page_shift;
 715         rwq->log_page_size =  page_shift - MLX5_ADAPTER_PAGE_SHIFT;
 716         rwq->wq_sig = !!(ucmd->flags & MLX5_WQ_FLAG_SIGNATURE);
 717
 718         mlx5_ib_dbg(dev, "addr 0x%llx, size %zd, npages %d, page_shift %d, ncont %d, offset %d\n",
 719                     (unsigned long long)ucmd->buf_addr, rwq->buf_size,
 720                     npages, page_shift, ncont, offset);
 721
 722         err = mlx5_ib_db_map_user(context, ucmd->db_addr, &rwq->db);
 723         if (err) {
 724                 mlx5_ib_dbg(dev, "map failed\n");
 725                 goto err_umem;
 726         }
 727
 728         rwq->create_type = MLX5_WQ_USER;
 729         return 0;
 730
 731 err_umem:
 732         ib_umem_release(rwq->umem);
 733         return err;
 734 }
 735
 736 static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd,
 737                           struct mlx5_ib_qp *qp, struct ib_udata *udata,
 738                           struct ib_qp_init_attr *attr,
 739                           u32 **in,
 740                           struct mlx5_ib_create_qp_resp *resp, int *inlen,
 741                           struct mlx5_ib_qp_base *base)
 742 {
 743         struct mlx5_ib_ucontext *context;
 744         struct mlx5_ib_create_qp ucmd;
 745         struct mlx5_ib_ubuffer *ubuffer = &base->ubuffer;
 746         int page_shift = 0;
 747         int uar_index;
 748         int npages;
 749         u32 offset = 0;
 750         int uuarn;
 751         int ncont = 0;
 752         __be64 *pas;
 753         void *qpc;
 754         int err;
 755
 756         err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd));
 757         if (err) {
 758                 mlx5_ib_dbg(dev, "copy failed\n");
 759                 return err;
 760         }
 761
 762         context = to_mucontext(pd->uobject->context);
 763         /*
 764          * TBD: should come from the verbs when we have the API
 765          */
 766         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
 767                 /* In CROSS_CHANNEL CQ and QP must use the same UAR */
 768                 uuarn = MLX5_CROSS_CHANNEL_UUAR;
 769         else {
 770                 uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH);
 771                 if (uuarn < 0) {
 772                         mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n");
 773                         mlx5_ib_dbg(dev, "reverting to medium latency\n");
 774                         uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_MEDIUM);
 775                         if (uuarn < 0) {
 776                                 mlx5_ib_dbg(dev, "failed to allocate medium latency UUAR\n");
 777                                 mlx5_ib_dbg(dev, "reverting to high latency\n");
 778                                 uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW);
 779                                 if (uuarn < 0) {
 780                                         mlx5_ib_warn(dev, "uuar allocation failed\n");
 781                                         return uuarn;
 782                                 }
 783                         }
 784                 }
 785         }
 786
 787         uar_index = uuarn_to_uar_index(&context->uuari, uuarn);
 788         mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index);
 789
 790         qp->rq.offset = 0;
 791         qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB);
 792         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 793
 794         err = set_user_buf_size(dev, qp, &ucmd, base, attr);
 795         if (err)
 796                 goto err_uuar;
 797
 798         if (ucmd.buf_addr && ubuffer->buf_size) {
 799                 ubuffer->buf_addr = ucmd.buf_addr;
 800                 err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr,
 801                                        ubuffer->buf_size,
 802                                        &ubuffer->umem, &npages, &page_shift,
 803                                        &ncont, &offset);
 804                 if (err)
 805                         goto err_uuar;
 806         } else {
 807                 ubuffer->umem = NULL;
 808         }
 809
 810         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 811                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * ncont;
 812         *in = mlx5_vzalloc(*inlen);
 813         if (!*in) {
 814                 err = -ENOMEM;
 815                 goto err_umem;
 816         }
 817
 818         pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas);
 819         if (ubuffer->umem)
 820                 mlx5_ib_populate_pas(dev, ubuffer->umem, page_shift, pas, 0);
 821
 822         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 823
 824         MLX5_SET(qpc, qpc, log_page_size, page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 825         MLX5_SET(qpc, qpc, page_offset, offset);
 826
 827         MLX5_SET(qpc, qpc, uar_page, uar_index);
 828         resp->uuar_index = uuarn;
 829         qp->uuarn = uuarn;
 830
 831         err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db);
 832         if (err) {
 833                 mlx5_ib_dbg(dev, "map failed\n");
 834                 goto err_free;
 835         }
 836
 837         err = ib_copy_to_udata(udata, resp, sizeof(*resp));
 838         if (err) {
 839                 mlx5_ib_dbg(dev, "copy failed\n");
 840                 goto err_unmap;
 841         }
 842         qp->create_type = MLX5_QP_USER;
 843
 844         return 0;
 845
 846 err_unmap:
 847         mlx5_ib_db_unmap_user(context, &qp->db);
 848
 849 err_free:
 850         kvfree(*in);
 851
 852 err_umem:
 853         if (ubuffer->umem)
 854                 ib_umem_release(ubuffer->umem);
 855
 856 err_uuar:
 857         free_uuar(&context->uuari, uuarn);
 858         return err;
 859 }
 860
 861 static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp,
 862                             struct mlx5_ib_qp_base *base)
 863 {
 864         struct mlx5_ib_ucontext *context;
 865
 866         context = to_mucontext(pd->uobject->context);
 867         mlx5_ib_db_unmap_user(context, &qp->db);
 868         if (base->ubuffer.umem)
 869                 ib_umem_release(base->ubuffer.umem);
 870         free_uuar(&context->uuari, qp->uuarn);
 871 }
 872
 873 static int create_kernel_qp(struct mlx5_ib_dev *dev,
 874                             struct ib_qp_init_attr *init_attr,
 875                             struct mlx5_ib_qp *qp,
 876                             u32 **in, int *inlen,
 877                             struct mlx5_ib_qp_base *base)
 878 {
 879         enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW;
 880         struct mlx5_uuar_info *uuari;
 881         int uar_index;
 882         void *qpc;
 883         int uuarn;
 884         int err;
 885
 886         uuari = &dev->mdev->priv.uuari;
 887         if (init_attr->create_flags & ~(IB_QP_CREATE_SIGNATURE_EN |
 888                                         IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK |
 889                                         IB_QP_CREATE_IPOIB_UD_LSO |
 890                                         mlx5_ib_create_qp_sqpn_qp1()))
 891                 return -EINVAL;
 892
 893         if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR)
 894                 lc = MLX5_IB_LATENCY_CLASS_FAST_PATH;
 895
 896         uuarn = alloc_uuar(uuari, lc);
 897         if (uuarn < 0) {
 898                 mlx5_ib_dbg(dev, "\n");
 899                 return -ENOMEM;
 900         }
 901
 902         qp->bf = &uuari->bfs[uuarn];
 903         uar_index = qp->bf->uar->index;
 904
 905         err = calc_sq_size(dev, init_attr, qp);
 906         if (err < 0) {
 907                 mlx5_ib_dbg(dev, "err %d\n", err);
 908                 goto err_uuar;
 909         }
 910
 911         qp->rq.offset = 0;
 912         qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
 913         base->ubuffer.buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
 914
 915         err = mlx5_buf_alloc(dev->mdev, base->ubuffer.buf_size, &qp->buf);
 916         if (err) {
 917                 mlx5_ib_dbg(dev, "err %d\n", err);
 918                 goto err_uuar;
 919         }
 920
 921         qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt);
 922         *inlen = MLX5_ST_SZ_BYTES(create_qp_in) +
 923                  MLX5_FLD_SZ_BYTES(create_qp_in, pas[0]) * qp->buf.npages;
 924         *in = mlx5_vzalloc(*inlen);
 925         if (!*in) {
 926                 err = -ENOMEM;
 927                 goto err_buf;
 928         }
 929
 930         qpc = MLX5_ADDR_OF(create_qp_in, *in, qpc);
 931         MLX5_SET(qpc, qpc, uar_page, uar_index);
 932         MLX5_SET(qpc, qpc, log_page_size, qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT);
 933
 934         /* Set "fast registration enabled" for all kernel QPs */
 935         MLX5_SET(qpc, qpc, fre, 1);
 936         MLX5_SET(qpc, qpc, rlky, 1);
 937
 938         if (init_attr->create_flags & mlx5_ib_create_qp_sqpn_qp1()) {
 939                 MLX5_SET(qpc, qpc, deth_sqpn, 1);
 940                 qp->flags |= MLX5_IB_QP_SQPN_QP1;
 941         }
 942
 943         mlx5_fill_page_array(&qp->buf,
 944                              (__be64 *)MLX5_ADDR_OF(create_qp_in, *in, pas));
 945
 946         err = mlx5_db_alloc(dev->mdev, &qp->db);
 947         if (err) {
 948                 mlx5_ib_dbg(dev, "err %d\n", err);
 949                 goto err_free;
 950         }
 951
 952         qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL);
 953         qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL);
 954         qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL);
 955         qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL);
 956         qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL);
 957
 958         if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid ||
 959             !qp->sq.w_list || !qp->sq.wqe_head) {
 960                 err = -ENOMEM;
 961                 goto err_wrid;
 962         }
 963         qp->create_type = MLX5_QP_KERNEL;
 964
 965         return 0;
 966
 967 err_wrid:
 968         mlx5_db_free(dev->mdev, &qp->db);
 969         kfree(qp->sq.wqe_head);
 970         kfree(qp->sq.w_list);
 971         kfree(qp->sq.wrid);
 972         kfree(qp->sq.wr_data);
 973         kfree(qp->rq.wrid);
 974
 975 err_free:
 976         kvfree(*in);
 977
 978 err_buf:
 979         mlx5_buf_free(dev->mdev, &qp->buf);
 980
 981 err_uuar:
 982         free_uuar(&dev->mdev->priv.uuari, uuarn);
 983         return err;
 984 }
 985
 986 static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
 987 {
 988         mlx5_db_free(dev->mdev, &qp->db);
 989         kfree(qp->sq.wqe_head);
 990         kfree(qp->sq.w_list);
 991         kfree(qp->sq.wrid);
 992         kfree(qp->sq.wr_data);
 993         kfree(qp->rq.wrid);
 994         mlx5_buf_free(dev->mdev, &qp->buf);
 995         free_uuar(&dev->mdev->priv.uuari, qp->bf->uuarn);
 996 }
 997
 998 static u32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr)
 999 {
1000         if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) ||
1001             (attr->qp_type == IB_QPT_XRC_INI))
1002                 return MLX5_SRQ_RQ;
1003         else if (!qp->has_rq)
1004                 return MLX5_ZERO_LEN_RQ;
1005         else
1006                 return MLX5_NON_ZERO_RQ;
1007 }
1008
1009 static int is_connected(enum ib_qp_type qp_type)
1010 {
1011         if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC)
1012                 return 1;
1013
1014         return 0;
1015 }
1016
1017 static int create_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1018                                     struct mlx5_ib_sq *sq, u32 tdn)
1019 {
1020         u32 in[MLX5_ST_SZ_DW(create_tis_in)] = {0};
1021         void *tisc = MLX5_ADDR_OF(create_tis_in, in, ctx);
1022
1023         MLX5_SET(tisc, tisc, transport_domain, tdn);
1024         return mlx5_core_create_tis(dev->mdev, in, sizeof(in), &sq->tisn);
1025 }
1026
1027 static void destroy_raw_packet_qp_tis(struct mlx5_ib_dev *dev,
1028                                       struct mlx5_ib_sq *sq)
1029 {
1030         mlx5_core_destroy_tis(dev->mdev, sq->tisn);
1031 }
1032
1033 static int create_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1034                                    struct mlx5_ib_sq *sq, void *qpin,
1035                                    struct ib_pd *pd)
1036 {
1037         struct mlx5_ib_ubuffer *ubuffer = &sq->ubuffer;
1038         __be64 *pas;
1039         void *in;
1040         void *sqc;
1041         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1042         void *wq;
1043         int inlen;
1044         int err;
1045         int page_shift = 0;
1046         int npages;
1047         int ncont = 0;
1048         u32 offset = 0;
1049
1050         err = mlx5_ib_umem_get(dev, pd, ubuffer->buf_addr, ubuffer->buf_size,
1051                                &sq->ubuffer.umem, &npages, &page_shift,
1052                                &ncont, &offset);
1053         if (err)
1054                 return err;
1055
1056         inlen = MLX5_ST_SZ_BYTES(create_sq_in) + sizeof(u64) * ncont;
1057         in = mlx5_vzalloc(inlen);
1058         if (!in) {
1059                 err = -ENOMEM;
1060                 goto err_umem;
1061         }
1062
1063         sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
1064         MLX5_SET(sqc, sqc, flush_in_error_en, 1);
1065         MLX5_SET(sqc, sqc, state, MLX5_SQC_STATE_RST);
1066         MLX5_SET(sqc, sqc, user_index, MLX5_GET(qpc, qpc, user_index));
1067         MLX5_SET(sqc, sqc, cqn, MLX5_GET(qpc, qpc, cqn_snd));
1068         MLX5_SET(sqc, sqc, tis_lst_sz, 1);
1069         MLX5_SET(sqc, sqc, tis_num_0, sq->tisn);
1070
1071         wq = MLX5_ADDR_OF(sqc, sqc, wq);
1072         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1073         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1074         MLX5_SET(wq, wq, uar_page, MLX5_GET(qpc, qpc, uar_page));
1075         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1076         MLX5_SET(wq, wq, log_wq_stride, ilog2(MLX5_SEND_WQE_BB));
1077         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_sq_size));
1078         MLX5_SET(wq, wq, log_wq_pg_sz,  page_shift - MLX5_ADAPTER_PAGE_SHIFT);
1079         MLX5_SET(wq, wq, page_offset, offset);
1080
1081         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1082         mlx5_ib_populate_pas(dev, sq->ubuffer.umem, page_shift, pas, 0);
1083
1084         err = mlx5_core_create_sq_tracked(dev->mdev, in, inlen, &sq->base.mqp);
1085
1086         kvfree(in);
1087
1088         if (err)
1089                 goto err_umem;
1090
1091         return 0;
1092
1093 err_umem:
1094         ib_umem_release(sq->ubuffer.umem);
1095         sq->ubuffer.umem = NULL;
1096
1097         return err;
1098 }
1099
1100 static void destroy_raw_packet_qp_sq(struct mlx5_ib_dev *dev,
1101                                      struct mlx5_ib_sq *sq)
1102 {
1103         mlx5_core_destroy_sq_tracked(dev->mdev, &sq->base.mqp);
1104         ib_umem_release(sq->ubuffer.umem);
1105 }
1106
1107 static int get_rq_pas_size(void *qpc)
1108 {
1109         u32 log_page_size = MLX5_GET(qpc, qpc, log_page_size) + 12;
1110         u32 log_rq_stride = MLX5_GET(qpc, qpc, log_rq_stride);
1111         u32 log_rq_size   = MLX5_GET(qpc, qpc, log_rq_size);
1112         u32 page_offset   = MLX5_GET(qpc, qpc, page_offset);
1113         u32 po_quanta     = 1 << (log_page_size - 6);
1114         u32 rq_sz         = 1 << (log_rq_size + 4 + log_rq_stride);
1115         u32 page_size     = 1 << log_page_size;
1116         u32 rq_sz_po      = rq_sz + (page_offset * po_quanta);
1117         u32 rq_num_pas    = (rq_sz_po + page_size - 1) / page_size;
1118
1119         return rq_num_pas * sizeof(u64);
1120 }
1121
1122 static int create_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1123                                    struct mlx5_ib_rq *rq, void *qpin)
1124 {
1125         struct mlx5_ib_qp *mqp = rq->base.container_mibqp;
1126         __be64 *pas;
1127         __be64 *qp_pas;
1128         void *in;
1129         void *rqc;
1130         void *wq;
1131         void *qpc = MLX5_ADDR_OF(create_qp_in, qpin, qpc);
1132         int inlen;
1133         int err;
1134         u32 rq_pas_size = get_rq_pas_size(qpc);
1135
1136         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + rq_pas_size;
1137         in = mlx5_vzalloc(inlen);
1138         if (!in)
1139                 return -ENOMEM;
1140
1141         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
1142         MLX5_SET(rqc, rqc, vsd, 1);
1143         MLX5_SET(rqc, rqc, mem_rq_type, MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
1144         MLX5_SET(rqc, rqc, state, MLX5_RQC_STATE_RST);
1145         MLX5_SET(rqc, rqc, flush_in_error_en, 1);
1146         MLX5_SET(rqc, rqc, user_index, MLX5_GET(qpc, qpc, user_index));
1147         MLX5_SET(rqc, rqc, cqn, MLX5_GET(qpc, qpc, cqn_rcv));
1148
1149         if (mqp->flags & MLX5_IB_QP_CAP_SCATTER_FCS)
1150                 MLX5_SET(rqc, rqc, scatter_fcs, 1);
1151
1152         wq = MLX5_ADDR_OF(rqc, rqc, wq);
1153         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
1154         MLX5_SET(wq, wq, end_padding_mode,
1155                  MLX5_GET(qpc, qpc, end_padding_mode));
1156         MLX5_SET(wq, wq, page_offset, MLX5_GET(qpc, qpc, page_offset));
1157         MLX5_SET(wq, wq, pd, MLX5_GET(qpc, qpc, pd));
1158         MLX5_SET64(wq, wq, dbr_addr, MLX5_GET64(qpc, qpc, dbr_addr));
1159         MLX5_SET(wq, wq, log_wq_stride, MLX5_GET(qpc, qpc, log_rq_stride) + 4);
1160         MLX5_SET(wq, wq, log_wq_pg_sz, MLX5_GET(qpc, qpc, log_page_size));
1161         MLX5_SET(wq, wq, log_wq_sz, MLX5_GET(qpc, qpc, log_rq_size));
1162
1163         pas = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
1164         qp_pas = (__be64 *)MLX5_ADDR_OF(create_qp_in, qpin, pas);
1165         memcpy(pas, qp_pas, rq_pas_size);
1166
1167         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rq->base.mqp);
1168
1169         kvfree(in);
1170
1171         return err;
1172 }
1173
1174 static void destroy_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
1175                                      struct mlx5_ib_rq *rq)
1176 {
1177         mlx5_core_destroy_rq_tracked(dev->mdev, &rq->base.mqp);
1178 }
1179
1180 static int create_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1181                                     struct mlx5_ib_rq *rq, u32 tdn)
1182 {
1183         u32 *in;
1184         void *tirc;
1185         int inlen;
1186         int err;
1187
1188         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1189         in = mlx5_vzalloc(inlen);
1190         if (!in)
1191                 return -ENOMEM;
1192
1193         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1194         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
1195         MLX5_SET(tirc, tirc, inline_rqn, rq->base.mqp.qpn);
1196         MLX5_SET(tirc, tirc, transport_domain, tdn);
1197
1198         err = mlx5_core_create_tir(dev->mdev, in, inlen, &rq->tirn);
1199
1200         kvfree(in);
1201
1202         return err;
1203 }
1204
1205 static void destroy_raw_packet_qp_tir(struct mlx5_ib_dev *dev,
1206                                       struct mlx5_ib_rq *rq)
1207 {
1208         mlx5_core_destroy_tir(dev->mdev, rq->tirn);
1209 }
1210
1211 static int create_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1212                                 u32 *in,
1213                                 struct ib_pd *pd)
1214 {
1215         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1216         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1217         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1218         struct ib_uobject *uobj = pd->uobject;
1219         struct ib_ucontext *ucontext = uobj->context;
1220         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1221         int err;
1222         u32 tdn = mucontext->tdn;
1223
1224         if (qp->sq.wqe_cnt) {
1225                 err = create_raw_packet_qp_tis(dev, sq, tdn);
1226                 if (err)
1227                         return err;
1228
1229                 err = create_raw_packet_qp_sq(dev, sq, in, pd);
1230                 if (err)
1231                         goto err_destroy_tis;
1232
1233                 sq->base.container_mibqp = qp;
1234         }
1235
1236         if (qp->rq.wqe_cnt) {
1237                 rq->base.container_mibqp = qp;
1238
1239                 err = create_raw_packet_qp_rq(dev, rq, in);
1240                 if (err)
1241                         goto err_destroy_sq;
1242
1243
1244                 err = create_raw_packet_qp_tir(dev, rq, tdn);
1245                 if (err)
1246                         goto err_destroy_rq;
1247         }
1248
1249         qp->trans_qp.base.mqp.qpn = qp->sq.wqe_cnt ? sq->base.mqp.qpn :
1250                                                      rq->base.mqp.qpn;
1251
1252         return 0;
1253
1254 err_destroy_rq:
1255         destroy_raw_packet_qp_rq(dev, rq);
1256 err_destroy_sq:
1257         if (!qp->sq.wqe_cnt)
1258                 return err;
1259         destroy_raw_packet_qp_sq(dev, sq);
1260 err_destroy_tis:
1261         destroy_raw_packet_qp_tis(dev, sq);
1262
1263         return err;
1264 }
1265
1266 static void destroy_raw_packet_qp(struct mlx5_ib_dev *dev,
1267                                   struct mlx5_ib_qp *qp)
1268 {
1269         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
1270         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1271         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1272
1273         if (qp->rq.wqe_cnt) {
1274                 destroy_raw_packet_qp_tir(dev, rq);
1275                 destroy_raw_packet_qp_rq(dev, rq);
1276         }
1277
1278         if (qp->sq.wqe_cnt) {
1279                 destroy_raw_packet_qp_sq(dev, sq);
1280                 destroy_raw_packet_qp_tis(dev, sq);
1281         }
1282 }
1283
1284 static void raw_packet_qp_copy_info(struct mlx5_ib_qp *qp,
1285                                     struct mlx5_ib_raw_packet_qp *raw_packet_qp)
1286 {
1287         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
1288         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
1289
1290         sq->sq = &qp->sq;
1291         rq->rq = &qp->rq;
1292         sq->doorbell = &qp->db;
1293         rq->doorbell = &qp->db;
1294 }
1295
1296 static void destroy_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1297 {
1298         mlx5_core_destroy_tir(dev->mdev, qp->rss_qp.tirn);
1299 }
1300
1301 static int create_rss_raw_qp_tir(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1302                                  struct ib_pd *pd,
1303                                  struct ib_qp_init_attr *init_attr,
1304                                  struct ib_udata *udata)
1305 {
1306         struct ib_uobject *uobj = pd->uobject;
1307         struct ib_ucontext *ucontext = uobj->context;
1308         struct mlx5_ib_ucontext *mucontext = to_mucontext(ucontext);
1309         struct mlx5_ib_create_qp_resp resp = {};
1310         int inlen;
1311         int err;
1312         u32 *in;
1313         void *tirc;
1314         void *hfso;
1315         u32 selected_fields = 0;
1316         size_t min_resp_len;
1317         u32 tdn = mucontext->tdn;
1318         struct mlx5_ib_create_qp_rss ucmd = {};
1319         size_t required_cmd_sz;
1320
1321         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1322                 return -EOPNOTSUPP;
1323
1324         if (init_attr->create_flags || init_attr->send_cq)
1325                 return -EINVAL;
1326
1327         min_resp_len = offsetof(typeof(resp), uuar_index) + sizeof(resp.uuar_index);
1328         if (udata->outlen < min_resp_len)
1329                 return -EINVAL;
1330
1331         required_cmd_sz = offsetof(typeof(ucmd), reserved1) + sizeof(ucmd.reserved1);
1332         if (udata->inlen < required_cmd_sz) {
1333                 mlx5_ib_dbg(dev, "invalid inlen\n");
1334                 return -EINVAL;
1335         }
1336
1337         if (udata->inlen > sizeof(ucmd) &&
1338             !ib_is_udata_cleared(udata, sizeof(ucmd),
1339                                  udata->inlen - sizeof(ucmd))) {
1340                 mlx5_ib_dbg(dev, "inlen is not supported\n");
1341                 return -EOPNOTSUPP;
1342         }
1343
1344         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
1345                 mlx5_ib_dbg(dev, "copy failed\n");
1346                 return -EFAULT;
1347         }
1348
1349         if (ucmd.comp_mask) {
1350                 mlx5_ib_dbg(dev, "invalid comp mask\n");
1351                 return -EOPNOTSUPP;
1352         }
1353
1354         if (memchr_inv(ucmd.reserved, 0, sizeof(ucmd.reserved)) || ucmd.reserved1) {
1355                 mlx5_ib_dbg(dev, "invalid reserved\n");
1356                 return -EOPNOTSUPP;
1357         }
1358
1359         err = ib_copy_to_udata(udata, &resp, min_resp_len);
1360         if (err) {
1361                 mlx5_ib_dbg(dev, "copy failed\n");
1362                 return -EINVAL;
1363         }
1364
1365         inlen = MLX5_ST_SZ_BYTES(create_tir_in);
1366         in = mlx5_vzalloc(inlen);
1367         if (!in)
1368                 return -ENOMEM;
1369
1370         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
1371         MLX5_SET(tirc, tirc, disp_type,
1372                  MLX5_TIRC_DISP_TYPE_INDIRECT);
1373         MLX5_SET(tirc, tirc, indirect_table,
1374                  init_attr->rwq_ind_tbl->ind_tbl_num);
1375         MLX5_SET(tirc, tirc, transport_domain, tdn);
1376
1377         hfso = MLX5_ADDR_OF(tirc, tirc, rx_hash_field_selector_outer);
1378         switch (ucmd.rx_hash_function) {
1379         case MLX5_RX_HASH_FUNC_TOEPLITZ:
1380         {
1381                 void *rss_key = MLX5_ADDR_OF(tirc, tirc, rx_hash_toeplitz_key);
1382                 size_t len = MLX5_FLD_SZ_BYTES(tirc, rx_hash_toeplitz_key);
1383
1384                 if (len != ucmd.rx_key_len) {
1385                         err = -EINVAL;
1386                         goto err;
1387                 }
1388
1389                 MLX5_SET(tirc, tirc, rx_hash_fn, MLX5_RX_HASH_FN_TOEPLITZ);
1390                 MLX5_SET(tirc, tirc, rx_hash_symmetric, 1);
1391                 memcpy(rss_key, ucmd.rx_hash_key, len);
1392                 break;
1393         }
1394         default:
1395                 err = -EOPNOTSUPP;
1396                 goto err;
1397         }
1398
1399         if (!ucmd.rx_hash_fields_mask) {
1400                 /* special case when this TIR serves as steering entry without hashing */
1401                 if (!init_attr->rwq_ind_tbl->log_ind_tbl_size)
1402                         goto create_tir;
1403                 err = -EINVAL;
1404                 goto err;
1405         }
1406
1407         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1408              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4)) &&
1409              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1410              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))) {
1411                 err = -EINVAL;
1412                 goto err;
1413         }
1414
1415         /* If none of IPV4 & IPV6 SRC/DST was set - this bit field is ignored */
1416         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1417             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4))
1418                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1419                          MLX5_L3_PROT_TYPE_IPV4);
1420         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6) ||
1421                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1422                 MLX5_SET(rx_hash_field_select, hfso, l3_prot_type,
1423                          MLX5_L3_PROT_TYPE_IPV6);
1424
1425         if (((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1426              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP)) &&
1427              ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1428              (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))) {
1429                 err = -EINVAL;
1430                 goto err;
1431         }
1432
1433         /* If none of TCP & UDP SRC/DST was set - this bit field is ignored */
1434         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1435             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP))
1436                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1437                          MLX5_L4_PROT_TYPE_TCP);
1438         else if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP) ||
1439                  (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1440                 MLX5_SET(rx_hash_field_select, hfso, l4_prot_type,
1441                          MLX5_L4_PROT_TYPE_UDP);
1442
1443         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV4) ||
1444             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_IPV6))
1445                 selected_fields |= MLX5_HASH_FIELD_SEL_SRC_IP;
1446
1447         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV4) ||
1448             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_IPV6))
1449                 selected_fields |= MLX5_HASH_FIELD_SEL_DST_IP;
1450
1451         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_TCP) ||
1452             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_SRC_PORT_UDP))
1453                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_SPORT;
1454
1455         if ((ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_TCP) ||
1456             (ucmd.rx_hash_fields_mask & MLX5_RX_HASH_DST_PORT_UDP))
1457                 selected_fields |= MLX5_HASH_FIELD_SEL_L4_DPORT;
1458
1459         MLX5_SET(rx_hash_field_select, hfso, selected_fields, selected_fields);
1460
1461 create_tir:
1462         err = mlx5_core_create_tir(dev->mdev, in, inlen, &qp->rss_qp.tirn);
1463
1464         if (err)
1465                 goto err;
1466
1467         kvfree(in);
1468         /* qpn is reserved for that QP */
1469         qp->trans_qp.base.mqp.qpn = 0;
1470         qp->flags |= MLX5_IB_QP_RSS;
1471         return 0;
1472
1473 err:
1474         kvfree(in);
1475         return err;
1476 }
1477
1478 static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd,
1479                             struct ib_qp_init_attr *init_attr,
1480                             struct ib_udata *udata, struct mlx5_ib_qp *qp)
1481 {
1482         struct mlx5_ib_resources *devr = &dev->devr;
1483         int inlen = MLX5_ST_SZ_BYTES(create_qp_in);
1484         struct mlx5_core_dev *mdev = dev->mdev;
1485         struct mlx5_ib_create_qp_resp resp;
1486         struct mlx5_ib_cq *send_cq;
1487         struct mlx5_ib_cq *recv_cq;
1488         unsigned long flags;
1489         u32 uidx = MLX5_IB_DEFAULT_UIDX;
1490         struct mlx5_ib_create_qp ucmd;
1491         struct mlx5_ib_qp_base *base;
1492         void *qpc;
1493         u32 *in;
1494         int err;
1495
1496         base = init_attr->qp_type == IB_QPT_RAW_PACKET ?
1497                &qp->raw_packet_qp.rq.base :
1498                &qp->trans_qp.base;
1499
1500         if (init_attr->qp_type != IB_QPT_RAW_PACKET)
1501                 mlx5_ib_odp_create_qp(qp);
1502
1503         mutex_init(&qp->mutex);
1504         spin_lock_init(&qp->sq.lock);
1505         spin_lock_init(&qp->rq.lock);
1506
1507         if (init_attr->rwq_ind_tbl) {
1508                 if (!udata)
1509                         return -ENOSYS;
1510
1511                 err = create_rss_raw_qp_tir(dev, qp, pd, init_attr, udata);
1512                 return err;
1513         }
1514
1515         if (init_attr->create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK) {
1516                 if (!MLX5_CAP_GEN(mdev, block_lb_mc)) {
1517                         mlx5_ib_dbg(dev, "block multicast loopback isn't supported\n");
1518                         return -EINVAL;
1519                 } else {
1520                         qp->flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK;
1521                 }
1522         }
1523
1524         if (init_attr->create_flags &
1525                         (IB_QP_CREATE_CROSS_CHANNEL |
1526                          IB_QP_CREATE_MANAGED_SEND |
1527                          IB_QP_CREATE_MANAGED_RECV)) {
1528                 if (!MLX5_CAP_GEN(mdev, cd)) {
1529                         mlx5_ib_dbg(dev, "cross-channel isn't supported\n");
1530                         return -EINVAL;
1531                 }
1532                 if (init_attr->create_flags & IB_QP_CREATE_CROSS_CHANNEL)
1533                         qp->flags |= MLX5_IB_QP_CROSS_CHANNEL;
1534                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_SEND)
1535                         qp->flags |= MLX5_IB_QP_MANAGED_SEND;
1536                 if (init_attr->create_flags & IB_QP_CREATE_MANAGED_RECV)
1537                         qp->flags |= MLX5_IB_QP_MANAGED_RECV;
1538         }
1539
1540         if (init_attr->qp_type == IB_QPT_UD &&
1541             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO))
1542                 if (!MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
1543                         mlx5_ib_dbg(dev, "ipoib UD lso qp isn't supported\n");
1544                         return -EOPNOTSUPP;
1545                 }
1546
1547         if (init_attr->create_flags & IB_QP_CREATE_SCATTER_FCS) {
1548                 if (init_attr->qp_type != IB_QPT_RAW_PACKET) {
1549                         mlx5_ib_dbg(dev, "Scatter FCS is supported only for Raw Packet QPs");
1550                         return -EOPNOTSUPP;
1551                 }
1552                 if (!MLX5_CAP_GEN(dev->mdev, eth_net_offloads) ||
1553                     !MLX5_CAP_ETH(dev->mdev, scatter_fcs)) {
1554                         mlx5_ib_dbg(dev, "Scatter FCS isn't supported\n");
1555                         return -EOPNOTSUPP;
1556                 }
1557                 qp->flags |= MLX5_IB_QP_CAP_SCATTER_FCS;
1558         }
1559
1560         if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR)
1561                 qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE;
1562
1563         if (pd && pd->uobject) {
1564                 if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) {
1565                         mlx5_ib_dbg(dev, "copy failed\n");
1566                         return -EFAULT;
1567                 }
1568
1569                 err = get_qp_user_index(to_mucontext(pd->uobject->context),
1570                                         &ucmd, udata->inlen, &uidx);
1571                 if (err)
1572                         return err;
1573
1574                 qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE);
1575                 qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE);
1576         } else {
1577                 qp->wq_sig = !!wq_signature;
1578         }
1579
1580         qp->has_rq = qp_has_rq(init_attr);
1581         err = set_rq_size(dev, &init_attr->cap, qp->has_rq,
1582                           qp, (pd && pd->uobject) ? &ucmd : NULL);
1583         if (err) {
1584                 mlx5_ib_dbg(dev, "err %d\n", err);
1585                 return err;
1586         }
1587
1588         if (pd) {
1589                 if (pd->uobject) {
1590                         __u32 max_wqes =
1591                                 1 << MLX5_CAP_GEN(mdev, log_max_qp_sz);
1592                         mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count);
1593                         if (ucmd.rq_wqe_shift != qp->rq.wqe_shift ||
1594                             ucmd.rq_wqe_count != qp->rq.wqe_cnt) {
1595                                 mlx5_ib_dbg(dev, "invalid rq params\n");
1596                                 return -EINVAL;
1597                         }
1598                         if (ucmd.sq_wqe_count > max_wqes) {
1599                                 mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n",
1600                                             ucmd.sq_wqe_count, max_wqes);
1601                                 return -EINVAL;
1602                         }
1603                         if (init_attr->create_flags &
1604                             mlx5_ib_create_qp_sqpn_qp1()) {
1605                                 mlx5_ib_dbg(dev, "user-space is not allowed to create UD QPs spoofing as QP1\n");
1606                                 return -EINVAL;
1607                         }
1608                         err = create_user_qp(dev, pd, qp, udata, init_attr, &in,
1609                                              &resp, &inlen, base);
1610                         if (err)
1611                                 mlx5_ib_dbg(dev, "err %d\n", err);
1612                 } else {
1613                         err = create_kernel_qp(dev, init_attr, qp, &in, &inlen,
1614                                                base);
1615                         if (err)
1616                                 mlx5_ib_dbg(dev, "err %d\n", err);
1617                 }
1618
1619                 if (err)
1620                         return err;
1621         } else {
1622                 in = mlx5_vzalloc(inlen);
1623                 if (!in)
1624                         return -ENOMEM;
1625
1626                 qp->create_type = MLX5_QP_EMPTY;
1627         }
1628
1629         if (is_sqp(init_attr->qp_type))
1630                 qp->port = init_attr->port_num;
1631
1632         qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
1633
1634         MLX5_SET(qpc, qpc, st, to_mlx5_st(init_attr->qp_type));
1635         MLX5_SET(qpc, qpc, pm_state, MLX5_QP_PM_MIGRATED);
1636
1637         if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR)
1638                 MLX5_SET(qpc, qpc, pd, to_mpd(pd ? pd : devr->p0)->pdn);
1639         else
1640                 MLX5_SET(qpc, qpc, latency_sensitive, 1);
1641
1642
1643         if (qp->wq_sig)
1644                 MLX5_SET(qpc, qpc, wq_signature, 1);
1645
1646         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
1647                 MLX5_SET(qpc, qpc, block_lb_mc, 1);
1648
1649         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
1650                 MLX5_SET(qpc, qpc, cd_master, 1);
1651         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
1652                 MLX5_SET(qpc, qpc, cd_slave_send, 1);
1653         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
1654                 MLX5_SET(qpc, qpc, cd_slave_receive, 1);
1655
1656         if (qp->scat_cqe && is_connected(init_attr->qp_type)) {
1657                 int rcqe_sz;
1658                 int scqe_sz;
1659
1660                 rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq);
1661                 scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq);
1662
1663                 if (rcqe_sz == 128)
1664                         MLX5_SET(qpc, qpc, cs_res, MLX5_RES_SCAT_DATA64_CQE);
1665                 else
1666                         MLX5_SET(qpc, qpc, cs_res, MLX5_RES_SCAT_DATA32_CQE);
1667
1668                 if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) {
1669                         if (scqe_sz == 128)
1670                                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA64_CQE);
1671                         else
1672                                 MLX5_SET(qpc, qpc, cs_req, MLX5_REQ_SCAT_DATA32_CQE);
1673                 }
1674         }
1675
1676         if (qp->rq.wqe_cnt) {
1677                 MLX5_SET(qpc, qpc, log_rq_stride, qp->rq.wqe_shift - 4);
1678                 MLX5_SET(qpc, qpc, log_rq_size, ilog2(qp->rq.wqe_cnt));
1679         }
1680
1681         MLX5_SET(qpc, qpc, rq_type, get_rx_type(qp, init_attr));
1682
1683         if (qp->sq.wqe_cnt)
1684                 MLX5_SET(qpc, qpc, log_sq_size, ilog2(qp->sq.wqe_cnt));
1685         else
1686                 MLX5_SET(qpc, qpc, no_sq, 1);
1687
1688         /* Set default resources */
1689         switch (init_attr->qp_type) {
1690         case IB_QPT_XRC_TGT:
1691                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1692                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(devr->c0)->mcq.cqn);
1693                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1694                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(init_attr->xrcd)->xrcdn);
1695                 break;
1696         case IB_QPT_XRC_INI:
1697                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(devr->c0)->mcq.cqn);
1698                 MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
1699                 MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s0)->msrq.srqn);
1700                 break;
1701         default:
1702                 if (init_attr->srq) {
1703                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x0)->xrcdn);
1704                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(init_attr->srq)->msrq.srqn);
1705                 } else {
1706                         MLX5_SET(qpc, qpc, xrcd, to_mxrcd(devr->x1)->xrcdn);
1707                         MLX5_SET(qpc, qpc, srqn_rmpn_xrqn, to_msrq(devr->s1)->msrq.srqn);
1708                 }
1709         }
1710
1711         if (init_attr->send_cq)
1712                 MLX5_SET(qpc, qpc, cqn_snd, to_mcq(init_attr->send_cq)->mcq.cqn);
1713
1714         if (init_attr->recv_cq)
1715                 MLX5_SET(qpc, qpc, cqn_rcv, to_mcq(init_attr->recv_cq)->mcq.cqn);
1716
1717         MLX5_SET64(qpc, qpc, dbr_addr, qp->db.dma);
1718
1719         /* 0xffffff means we ask to work with cqe version 0 */
1720         if (MLX5_CAP_GEN(mdev, cqe_version) == MLX5_CQE_VERSION_V1)
1721                 MLX5_SET(qpc, qpc, user_index, uidx);
1722
1723         /* we use IB_QP_CREATE_IPOIB_UD_LSO to indicates ipoib qp */
1724         if (init_attr->qp_type == IB_QPT_UD &&
1725             (init_attr->create_flags & IB_QP_CREATE_IPOIB_UD_LSO)) {
1726                 MLX5_SET(qpc, qpc, ulp_stateless_offload_mode, 1);
1727                 qp->flags |= MLX5_IB_QP_LSO;
1728         }
1729
1730         if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
1731                 qp->raw_packet_qp.sq.ubuffer.buf_addr = ucmd.sq_buf_addr;
1732                 raw_packet_qp_copy_info(qp, &qp->raw_packet_qp);
1733                 err = create_raw_packet_qp(dev, qp, in, pd);
1734         } else {
1735                 err = mlx5_core_create_qp(dev->mdev, &base->mqp, in, inlen);
1736         }
1737
1738         if (err) {
1739                 mlx5_ib_dbg(dev, "create qp failed\n");
1740                 goto err_create;
1741         }
1742
1743         kvfree(in);
1744
1745         base->container_mibqp = qp;
1746         base->mqp.event = mlx5_ib_qp_event;
1747
1748         get_cqs(init_attr->qp_type, init_attr->send_cq, init_attr->recv_cq,
1749                 &send_cq, &recv_cq);
1750         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1751         mlx5_ib_lock_cqs(send_cq, recv_cq);
1752         /* Maintain device to QPs access, needed for further handling via reset
1753          * flow
1754          */
1755         list_add_tail(&qp->qps_list, &dev->qp_list);
1756         /* Maintain CQ to QPs access, needed for further handling via reset flow
1757          */
1758         if (send_cq)
1759                 list_add_tail(&qp->cq_send_list, &send_cq->list_send_qp);
1760         if (recv_cq)
1761                 list_add_tail(&qp->cq_recv_list, &recv_cq->list_recv_qp);
1762         mlx5_ib_unlock_cqs(send_cq, recv_cq);
1763         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1764
1765         return 0;
1766
1767 err_create:
1768         if (qp->create_type == MLX5_QP_USER)
1769                 destroy_qp_user(pd, qp, base);
1770         else if (qp->create_type == MLX5_QP_KERNEL)
1771                 destroy_qp_kernel(dev, qp);
1772
1773         kvfree(in);
1774         return err;
1775 }
1776
1777 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
1778         __acquires(&send_cq->lock) __acquires(&recv_cq->lock)
1779 {
1780         if (send_cq) {
1781                 if (recv_cq) {
1782                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
1783                                 spin_lock(&send_cq->lock);
1784                                 spin_lock_nested(&recv_cq->lock,
1785                                                  SINGLE_DEPTH_NESTING);
1786                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
1787                                 spin_lock(&send_cq->lock);
1788                                 __acquire(&recv_cq->lock);
1789                         } else {
1790                                 spin_lock(&recv_cq->lock);
1791                                 spin_lock_nested(&send_cq->lock,
1792                                                  SINGLE_DEPTH_NESTING);
1793                         }
1794                 } else {
1795                         spin_lock(&send_cq->lock);
1796                         __acquire(&recv_cq->lock);
1797                 }
1798         } else if (recv_cq) {
1799                 spin_lock(&recv_cq->lock);
1800                 __acquire(&send_cq->lock);
1801         } else {
1802                 __acquire(&send_cq->lock);
1803                 __acquire(&recv_cq->lock);
1804         }
1805 }
1806
1807 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq)
1808         __releases(&send_cq->lock) __releases(&recv_cq->lock)
1809 {
1810         if (send_cq) {
1811                 if (recv_cq) {
1812                         if (send_cq->mcq.cqn < recv_cq->mcq.cqn)  {
1813                                 spin_unlock(&recv_cq->lock);
1814                                 spin_unlock(&send_cq->lock);
1815                         } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) {
1816                                 __release(&recv_cq->lock);
1817                                 spin_unlock(&send_cq->lock);
1818                         } else {
1819                                 spin_unlock(&send_cq->lock);
1820                                 spin_unlock(&recv_cq->lock);
1821                         }
1822                 } else {
1823                         __release(&recv_cq->lock);
1824                         spin_unlock(&send_cq->lock);
1825                 }
1826         } else if (recv_cq) {
1827                 __release(&send_cq->lock);
1828                 spin_unlock(&recv_cq->lock);
1829         } else {
1830                 __release(&recv_cq->lock);
1831                 __release(&send_cq->lock);
1832         }
1833 }
1834
1835 static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp)
1836 {
1837         return to_mpd(qp->ibqp.pd);
1838 }
1839
1840 static void get_cqs(enum ib_qp_type qp_type,
1841                     struct ib_cq *ib_send_cq, struct ib_cq *ib_recv_cq,
1842                     struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq)
1843 {
1844         switch (qp_type) {
1845         case IB_QPT_XRC_TGT:
1846                 *send_cq = NULL;
1847                 *recv_cq = NULL;
1848                 break;
1849         case MLX5_IB_QPT_REG_UMR:
1850         case IB_QPT_XRC_INI:
1851                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
1852                 *recv_cq = NULL;
1853                 break;
1854
1855         case IB_QPT_SMI:
1856         case MLX5_IB_QPT_HW_GSI:
1857         case IB_QPT_RC:
1858         case IB_QPT_UC:
1859         case IB_QPT_UD:
1860         case IB_QPT_RAW_IPV6:
1861         case IB_QPT_RAW_ETHERTYPE:
1862         case IB_QPT_RAW_PACKET:
1863                 *send_cq = ib_send_cq ? to_mcq(ib_send_cq) : NULL;
1864                 *recv_cq = ib_recv_cq ? to_mcq(ib_recv_cq) : NULL;
1865                 break;
1866
1867         case IB_QPT_MAX:
1868         default:
1869                 *send_cq = NULL;
1870                 *recv_cq = NULL;
1871                 break;
1872         }
1873 }
1874
1875 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
1876                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
1877                                 u8 lag_tx_affinity);
1878
1879 static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp)
1880 {
1881         struct mlx5_ib_cq *send_cq, *recv_cq;
1882         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
1883         unsigned long flags;
1884         int err;
1885
1886         if (qp->ibqp.rwq_ind_tbl) {
1887                 destroy_rss_raw_qp_tir(dev, qp);
1888                 return;
1889         }
1890
1891         base = qp->ibqp.qp_type == IB_QPT_RAW_PACKET ?
1892                &qp->raw_packet_qp.rq.base :
1893                &qp->trans_qp.base;
1894
1895         if (qp->state != IB_QPS_RESET) {
1896                 if (qp->ibqp.qp_type != IB_QPT_RAW_PACKET) {
1897                         mlx5_ib_qp_disable_pagefaults(qp);
1898                         err = mlx5_core_qp_modify(dev->mdev,
1899                                                   MLX5_CMD_OP_2RST_QP, 0,
1900                                                   NULL, &base->mqp);
1901                 } else {
1902                         struct mlx5_modify_raw_qp_param raw_qp_param = {
1903                                 .operation = MLX5_CMD_OP_2RST_QP
1904                         };
1905
1906                         err = modify_raw_packet_qp(dev, qp, &raw_qp_param, 0);
1907                 }
1908                 if (err)
1909                         mlx5_ib_warn(dev, "mlx5_ib: modify QP 0x%06x to RESET failed\n",
1910                                      base->mqp.qpn);
1911         }
1912
1913         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
1914                 &send_cq, &recv_cq);
1915
1916         spin_lock_irqsave(&dev->reset_flow_resource_lock, flags);
1917         mlx5_ib_lock_cqs(send_cq, recv_cq);
1918         /* del from lists under both locks above to protect reset flow paths */
1919         list_del(&qp->qps_list);
1920         if (send_cq)
1921                 list_del(&qp->cq_send_list);
1922
1923         if (recv_cq)
1924                 list_del(&qp->cq_recv_list);
1925
1926         if (qp->create_type == MLX5_QP_KERNEL) {
1927                 __mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
1928                                    qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL);
1929                 if (send_cq != recv_cq)
1930                         __mlx5_ib_cq_clean(send_cq, base->mqp.qpn,
1931                                            NULL);
1932         }
1933         mlx5_ib_unlock_cqs(send_cq, recv_cq);
1934         spin_unlock_irqrestore(&dev->reset_flow_resource_lock, flags);
1935
1936         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
1937                 destroy_raw_packet_qp(dev, qp);
1938         } else {
1939                 err = mlx5_core_destroy_qp(dev->mdev, &base->mqp);
1940                 if (err)
1941                         mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n",
1942                                      base->mqp.qpn);
1943         }
1944
1945         if (qp->create_type == MLX5_QP_KERNEL)
1946                 destroy_qp_kernel(dev, qp);
1947         else if (qp->create_type == MLX5_QP_USER)
1948                 destroy_qp_user(&get_pd(qp)->ibpd, qp, base);
1949 }
1950
1951 static const char *ib_qp_type_str(enum ib_qp_type type)
1952 {
1953         switch (type) {
1954         case IB_QPT_SMI:
1955                 return "IB_QPT_SMI";
1956         case IB_QPT_GSI:
1957                 return "IB_QPT_GSI";
1958         case IB_QPT_RC:
1959                 return "IB_QPT_RC";
1960         case IB_QPT_UC:
1961                 return "IB_QPT_UC";
1962         case IB_QPT_UD:
1963                 return "IB_QPT_UD";
1964         case IB_QPT_RAW_IPV6:
1965                 return "IB_QPT_RAW_IPV6";
1966         case IB_QPT_RAW_ETHERTYPE:
1967                 return "IB_QPT_RAW_ETHERTYPE";
1968         case IB_QPT_XRC_INI:
1969                 return "IB_QPT_XRC_INI";
1970         case IB_QPT_XRC_TGT:
1971                 return "IB_QPT_XRC_TGT";
1972         case IB_QPT_RAW_PACKET:
1973                 return "IB_QPT_RAW_PACKET";
1974         case MLX5_IB_QPT_REG_UMR:
1975                 return "MLX5_IB_QPT_REG_UMR";
1976         case IB_QPT_MAX:
1977         default:
1978                 return "Invalid QP type";
1979         }
1980 }
1981
1982 struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd,
1983                                 struct ib_qp_init_attr *init_attr,
1984                                 struct ib_udata *udata)
1985 {
1986         struct mlx5_ib_dev *dev;
1987         struct mlx5_ib_qp *qp;
1988         u16 xrcdn = 0;
1989         int err;
1990
1991         if (pd) {
1992                 dev = to_mdev(pd->device);
1993
1994                 if (init_attr->qp_type == IB_QPT_RAW_PACKET) {
1995                         if (!pd->uobject) {
1996                                 mlx5_ib_dbg(dev, "Raw Packet QP is not supported for kernel consumers\n");
1997                                 return ERR_PTR(-EINVAL);
1998                         } else if (!to_mucontext(pd->uobject->context)->cqe_version) {
1999                                 mlx5_ib_dbg(dev, "Raw Packet QP is only supported for CQE version > 0\n");
2000                                 return ERR_PTR(-EINVAL);
2001                         }
2002                 }
2003         } else {
2004                 /* being cautious here */
2005                 if (init_attr->qp_type != IB_QPT_XRC_TGT &&
2006                     init_attr->qp_type != MLX5_IB_QPT_REG_UMR) {
2007                         pr_warn("%s: no PD for transport %s\n", __func__,
2008                                 ib_qp_type_str(init_attr->qp_type));
2009                         return ERR_PTR(-EINVAL);
2010                 }
2011                 dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device);
2012         }
2013
2014         switch (init_attr->qp_type) {
2015         case IB_QPT_XRC_TGT:
2016         case IB_QPT_XRC_INI:
2017                 if (!MLX5_CAP_GEN(dev->mdev, xrc)) {
2018                         mlx5_ib_dbg(dev, "XRC not supported\n");
2019                         return ERR_PTR(-ENOSYS);
2020                 }
2021                 init_attr->recv_cq = NULL;
2022                 if (init_attr->qp_type == IB_QPT_XRC_TGT) {
2023                         xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn;
2024                         init_attr->send_cq = NULL;
2025                 }
2026
2027                 /* fall through */
2028         case IB_QPT_RAW_PACKET:
2029         case IB_QPT_RC:
2030         case IB_QPT_UC:
2031         case IB_QPT_UD:
2032         case IB_QPT_SMI:
2033         case MLX5_IB_QPT_HW_GSI:
2034         case MLX5_IB_QPT_REG_UMR:
2035                 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
2036                 if (!qp)
2037                         return ERR_PTR(-ENOMEM);
2038
2039                 err = create_qp_common(dev, pd, init_attr, udata, qp);
2040                 if (err) {
2041                         mlx5_ib_dbg(dev, "create_qp_common failed\n");
2042                         kfree(qp);
2043                         return ERR_PTR(err);
2044                 }
2045
2046                 if (is_qp0(init_attr->qp_type))
2047                         qp->ibqp.qp_num = 0;
2048                 else if (is_qp1(init_attr->qp_type))
2049                         qp->ibqp.qp_num = 1;
2050                 else
2051                         qp->ibqp.qp_num = qp->trans_qp.base.mqp.qpn;
2052
2053                 mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
2054                             qp->ibqp.qp_num, qp->trans_qp.base.mqp.qpn,
2055                             to_mcq(init_attr->recv_cq)->mcq.cqn,
2056                             to_mcq(init_attr->send_cq)->mcq.cqn);
2057
2058                 qp->trans_qp.xrcdn = xrcdn;
2059
2060                 break;
2061
2062         case IB_QPT_GSI:
2063                 return mlx5_ib_gsi_create_qp(pd, init_attr);
2064
2065         case IB_QPT_RAW_IPV6:
2066         case IB_QPT_RAW_ETHERTYPE:
2067         case IB_QPT_MAX:
2068         default:
2069                 mlx5_ib_dbg(dev, "unsupported qp type %d\n",
2070                             init_attr->qp_type);
2071                 /* Don't support raw QPs */
2072                 return ERR_PTR(-EINVAL);
2073         }
2074
2075         return &qp->ibqp;
2076 }
2077
2078 int mlx5_ib_destroy_qp(struct ib_qp *qp)
2079 {
2080         struct mlx5_ib_dev *dev = to_mdev(qp->device);
2081         struct mlx5_ib_qp *mqp = to_mqp(qp);
2082
2083         if (unlikely(qp->qp_type == IB_QPT_GSI))
2084                 return mlx5_ib_gsi_destroy_qp(qp);
2085
2086         destroy_qp_common(dev, mqp);
2087
2088         kfree(mqp);
2089
2090         return 0;
2091 }
2092
2093 static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr,
2094                                    int attr_mask)
2095 {
2096         u32 hw_access_flags = 0;
2097         u8 dest_rd_atomic;
2098         u32 access_flags;
2099
2100         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2101                 dest_rd_atomic = attr->max_dest_rd_atomic;
2102         else
2103                 dest_rd_atomic = qp->trans_qp.resp_depth;
2104
2105         if (attr_mask & IB_QP_ACCESS_FLAGS)
2106                 access_flags = attr->qp_access_flags;
2107         else
2108                 access_flags = qp->trans_qp.atomic_rd_en;
2109
2110         if (!dest_rd_atomic)
2111                 access_flags &= IB_ACCESS_REMOTE_WRITE;
2112
2113         if (access_flags & IB_ACCESS_REMOTE_READ)
2114                 hw_access_flags |= MLX5_QP_BIT_RRE;
2115         if (access_flags & IB_ACCESS_REMOTE_ATOMIC)
2116                 hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX);
2117         if (access_flags & IB_ACCESS_REMOTE_WRITE)
2118                 hw_access_flags |= MLX5_QP_BIT_RWE;
2119
2120         return cpu_to_be32(hw_access_flags);
2121 }
2122
2123 enum {
2124         MLX5_PATH_FLAG_FL       = 1 << 0,
2125         MLX5_PATH_FLAG_FREE_AR  = 1 << 1,
2126         MLX5_PATH_FLAG_COUNTER  = 1 << 2,
2127 };
2128
2129 static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)
2130 {
2131         if (rate == IB_RATE_PORT_CURRENT) {
2132                 return 0;
2133         } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {
2134                 return -EINVAL;
2135         } else {
2136                 while (rate != IB_RATE_2_5_GBPS &&
2137                        !(1 << (rate + MLX5_STAT_RATE_OFFSET) &
2138                          MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
2139                         --rate;
2140         }
2141
2142         return rate + MLX5_STAT_RATE_OFFSET;
2143 }
2144
2145 static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,
2146                                       struct mlx5_ib_sq *sq, u8 sl)
2147 {
2148         void *in;
2149         void *tisc;
2150         int inlen;
2151         int err;
2152
2153         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2154         in = mlx5_vzalloc(inlen);
2155         if (!in)
2156                 return -ENOMEM;
2157
2158         MLX5_SET(modify_tis_in, in, bitmask.prio, 1);
2159
2160         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2161         MLX5_SET(tisc, tisc, prio, ((sl & 0x7) << 1));
2162
2163         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2164
2165         kvfree(in);
2166
2167         return err;
2168 }
2169
2170 static int modify_raw_packet_tx_affinity(struct mlx5_core_dev *dev,
2171                                          struct mlx5_ib_sq *sq, u8 tx_affinity)
2172 {
2173         void *in;
2174         void *tisc;
2175         int inlen;
2176         int err;
2177
2178         inlen = MLX5_ST_SZ_BYTES(modify_tis_in);
2179         in = mlx5_vzalloc(inlen);
2180         if (!in)
2181                 return -ENOMEM;
2182
2183         MLX5_SET(modify_tis_in, in, bitmask.lag_tx_port_affinity, 1);
2184
2185         tisc = MLX5_ADDR_OF(modify_tis_in, in, ctx);
2186         MLX5_SET(tisc, tisc, lag_tx_port_affinity, tx_affinity);
2187
2188         err = mlx5_core_modify_tis(dev, sq->tisn, in, inlen);
2189
2190         kvfree(in);
2191
2192         return err;
2193 }
2194
2195 static int mlx5_set_path(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2196                          const struct ib_ah_attr *ah,
2197                          struct mlx5_qp_path *path, u8 port, int attr_mask,
2198                          u32 path_flags, const struct ib_qp_attr *attr,
2199                          bool alt)
2200 {
2201         enum rdma_link_layer ll = rdma_port_get_link_layer(&dev->ib_dev, port);
2202         int err;
2203
2204         if (attr_mask & IB_QP_PKEY_INDEX)
2205                 path->pkey_index = cpu_to_be16(alt ? attr->alt_pkey_index :
2206                                                      attr->pkey_index);
2207
2208         if (ah->ah_flags & IB_AH_GRH) {
2209                 if (ah->grh.sgid_index >=
2210                     dev->mdev->port_caps[port - 1].gid_table_len) {
2211                         pr_err("sgid_index (%u) too large. max is %d\n",
2212                                ah->grh.sgid_index,
2213                                dev->mdev->port_caps[port - 1].gid_table_len);
2214                         return -EINVAL;
2215                 }
2216         }
2217
2218         if (ll == IB_LINK_LAYER_ETHERNET) {
2219                 if (!(ah->ah_flags & IB_AH_GRH))
2220                         return -EINVAL;
2221                 memcpy(path->rmac, ah->dmac, sizeof(ah->dmac));
2222                 path->udp_sport = mlx5_get_roce_udp_sport(dev, port,
2223                                                           ah->grh.sgid_index);
2224                 path->dci_cfi_prio_sl = (ah->sl & 0x7) << 4;
2225         } else {
2226                 path->fl_free_ar = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0;
2227                 path->fl_free_ar |=
2228                         (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x40 : 0;
2229                 path->rlid = cpu_to_be16(ah->dlid);
2230                 path->grh_mlid = ah->src_path_bits & 0x7f;
2231                 if (ah->ah_flags & IB_AH_GRH)
2232                         path->grh_mlid  |= 1 << 7;
2233                 path->dci_cfi_prio_sl = ah->sl & 0xf;
2234         }
2235
2236         if (ah->ah_flags & IB_AH_GRH) {
2237                 path->mgid_index = ah->grh.sgid_index;
2238                 path->hop_limit  = ah->grh.hop_limit;
2239                 path->tclass_flowlabel =
2240                         cpu_to_be32((ah->grh.traffic_class << 20) |
2241                                     (ah->grh.flow_label));
2242                 memcpy(path->rgid, ah->grh.dgid.raw, 16);
2243         }
2244
2245         err = ib_rate_to_mlx5(dev, ah->static_rate);
2246         if (err < 0)
2247                 return err;
2248         path->static_rate = err;
2249         path->port = port;
2250
2251         if (attr_mask & IB_QP_TIMEOUT)
2252                 path->ackto_lt = (alt ? attr->alt_timeout : attr->timeout) << 3;
2253
2254         if ((qp->ibqp.qp_type == IB_QPT_RAW_PACKET) && qp->sq.wqe_cnt)
2255                 return modify_raw_packet_eth_prio(dev->mdev,
2256                                                   &qp->raw_packet_qp.sq,
2257                                                   ah->sl & 0xf);
2258
2259         return 0;
2260 }
2261
2262 static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = {
2263         [MLX5_QP_STATE_INIT] = {
2264                 [MLX5_QP_STATE_INIT] = {
2265                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2266                                           MLX5_QP_OPTPAR_RAE            |
2267                                           MLX5_QP_OPTPAR_RWE            |
2268                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2269                                           MLX5_QP_OPTPAR_PRI_PORT,
2270                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2271                                           MLX5_QP_OPTPAR_PKEY_INDEX     |
2272                                           MLX5_QP_OPTPAR_PRI_PORT,
2273                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2274                                           MLX5_QP_OPTPAR_Q_KEY          |
2275                                           MLX5_QP_OPTPAR_PRI_PORT,
2276                 },
2277                 [MLX5_QP_STATE_RTR] = {
2278                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2279                                           MLX5_QP_OPTPAR_RRE            |
2280                                           MLX5_QP_OPTPAR_RAE            |
2281                                           MLX5_QP_OPTPAR_RWE            |
2282                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2283                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2284                                           MLX5_QP_OPTPAR_RWE            |
2285                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2286                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX     |
2287                                           MLX5_QP_OPTPAR_Q_KEY,
2288                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX    |
2289                                            MLX5_QP_OPTPAR_Q_KEY,
2290                         [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH |
2291                                           MLX5_QP_OPTPAR_RRE            |
2292                                           MLX5_QP_OPTPAR_RAE            |
2293                                           MLX5_QP_OPTPAR_RWE            |
2294                                           MLX5_QP_OPTPAR_PKEY_INDEX,
2295                 },
2296         },
2297         [MLX5_QP_STATE_RTR] = {
2298                 [MLX5_QP_STATE_RTS] = {
2299                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2300                                           MLX5_QP_OPTPAR_RRE            |
2301                                           MLX5_QP_OPTPAR_RAE            |
2302                                           MLX5_QP_OPTPAR_RWE            |
2303                                           MLX5_QP_OPTPAR_PM_STATE       |
2304                                           MLX5_QP_OPTPAR_RNR_TIMEOUT,
2305                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH  |
2306                                           MLX5_QP_OPTPAR_RWE            |
2307                                           MLX5_QP_OPTPAR_PM_STATE,
2308                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY,
2309                 },
2310         },
2311         [MLX5_QP_STATE_RTS] = {
2312                 [MLX5_QP_STATE_RTS] = {
2313                         [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE            |
2314                                           MLX5_QP_OPTPAR_RAE            |
2315                                           MLX5_QP_OPTPAR_RWE            |
2316                                           MLX5_QP_OPTPAR_RNR_TIMEOUT    |
2317                                           MLX5_QP_OPTPAR_PM_STATE       |
2318                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2319                         [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE            |
2320                                           MLX5_QP_OPTPAR_PM_STATE       |
2321                                           MLX5_QP_OPTPAR_ALT_ADDR_PATH,
2322                         [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY          |
2323                                           MLX5_QP_OPTPAR_SRQN           |
2324                                           MLX5_QP_OPTPAR_CQN_RCV,
2325                 },
2326         },
2327         [MLX5_QP_STATE_SQER] = {
2328                 [MLX5_QP_STATE_RTS] = {
2329                         [MLX5_QP_ST_UD]  = MLX5_QP_OPTPAR_Q_KEY,
2330                         [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY,
2331                         [MLX5_QP_ST_UC]  = MLX5_QP_OPTPAR_RWE,
2332                         [MLX5_QP_ST_RC]  = MLX5_QP_OPTPAR_RNR_TIMEOUT   |
2333                                            MLX5_QP_OPTPAR_RWE           |
2334                                            MLX5_QP_OPTPAR_RAE           |
2335                                            MLX5_QP_OPTPAR_RRE,
2336                 },
2337         },
2338 };
2339
2340 static int ib_nr_to_mlx5_nr(int ib_mask)
2341 {
2342         switch (ib_mask) {
2343         case IB_QP_STATE:
2344                 return 0;
2345         case IB_QP_CUR_STATE:
2346                 return 0;
2347         case IB_QP_EN_SQD_ASYNC_NOTIFY:
2348                 return 0;
2349         case IB_QP_ACCESS_FLAGS:
2350                 return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE |
2351                         MLX5_QP_OPTPAR_RAE;
2352         case IB_QP_PKEY_INDEX:
2353                 return MLX5_QP_OPTPAR_PKEY_INDEX;
2354         case IB_QP_PORT:
2355                 return MLX5_QP_OPTPAR_PRI_PORT;
2356         case IB_QP_QKEY:
2357                 return MLX5_QP_OPTPAR_Q_KEY;
2358         case IB_QP_AV:
2359                 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH |
2360                         MLX5_QP_OPTPAR_PRI_PORT;
2361         case IB_QP_PATH_MTU:
2362                 return 0;
2363         case IB_QP_TIMEOUT:
2364                 return MLX5_QP_OPTPAR_ACK_TIMEOUT;
2365         case IB_QP_RETRY_CNT:
2366                 return MLX5_QP_OPTPAR_RETRY_COUNT;
2367         case IB_QP_RNR_RETRY:
2368                 return MLX5_QP_OPTPAR_RNR_RETRY;
2369         case IB_QP_RQ_PSN:
2370                 return 0;
2371         case IB_QP_MAX_QP_RD_ATOMIC:
2372                 return MLX5_QP_OPTPAR_SRA_MAX;
2373         case IB_QP_ALT_PATH:
2374                 return MLX5_QP_OPTPAR_ALT_ADDR_PATH;
2375         case IB_QP_MIN_RNR_TIMER:
2376                 return MLX5_QP_OPTPAR_RNR_TIMEOUT;
2377         case IB_QP_SQ_PSN:
2378                 return 0;
2379         case IB_QP_MAX_DEST_RD_ATOMIC:
2380                 return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE |
2381                         MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE;
2382         case IB_QP_PATH_MIG_STATE:
2383                 return MLX5_QP_OPTPAR_PM_STATE;
2384         case IB_QP_CAP:
2385                 return 0;
2386         case IB_QP_DEST_QPN:
2387                 return 0;
2388         }
2389         return 0;
2390 }
2391
2392 static int ib_mask_to_mlx5_opt(int ib_mask)
2393 {
2394         int result = 0;
2395         int i;
2396
2397         for (i = 0; i < 8 * sizeof(int); i++) {
2398                 if ((1 << i) & ib_mask)
2399                         result |= ib_nr_to_mlx5_nr(1 << i);
2400         }
2401
2402         return result;
2403 }
2404
2405 static int modify_raw_packet_qp_rq(struct mlx5_ib_dev *dev,
2406                                    struct mlx5_ib_rq *rq, int new_state,
2407                                    const struct mlx5_modify_raw_qp_param *raw_qp_param)
2408 {
2409         void *in;
2410         void *rqc;
2411         int inlen;
2412         int err;
2413
2414         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
2415         in = mlx5_vzalloc(inlen);
2416         if (!in)
2417                 return -ENOMEM;
2418
2419         MLX5_SET(modify_rq_in, in, rq_state, rq->state);
2420
2421         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
2422         MLX5_SET(rqc, rqc, state, new_state);
2423
2424         if (raw_qp_param->set_mask & MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID) {
2425                 if (MLX5_CAP_GEN(dev->mdev, modify_rq_counter_set_id)) {
2426                         MLX5_SET64(modify_rq_in, in, modify_bitmask,
2427                                    MLX5_MODIFY_RQ_IN_MODIFY_BITMASK_MODIFY_RQ_COUNTER_SET_ID);
2428                         MLX5_SET(rqc, rqc, counter_set_id, raw_qp_param->rq_q_ctr_id);
2429                 } else
2430                         pr_info_once("%s: RAW PACKET QP counters are not supported on current FW\n",
2431                                      dev->ib_dev.name);
2432         }
2433
2434         err = mlx5_core_modify_rq(dev->mdev, rq->base.mqp.qpn, in, inlen);
2435         if (err)
2436                 goto out;
2437
2438         rq->state = new_state;
2439
2440 out:
2441         kvfree(in);
2442         return err;
2443 }
2444
2445 static int modify_raw_packet_qp_sq(struct mlx5_core_dev *dev,
2446                                    struct mlx5_ib_sq *sq, int new_state)
2447 {
2448         void *in;
2449         void *sqc;
2450         int inlen;
2451         int err;
2452
2453         inlen = MLX5_ST_SZ_BYTES(modify_sq_in);
2454         in = mlx5_vzalloc(inlen);
2455         if (!in)
2456                 return -ENOMEM;
2457
2458         MLX5_SET(modify_sq_in, in, sq_state, sq->state);
2459
2460         sqc = MLX5_ADDR_OF(modify_sq_in, in, ctx);
2461         MLX5_SET(sqc, sqc, state, new_state);
2462
2463         err = mlx5_core_modify_sq(dev, sq->base.mqp.qpn, in, inlen);
2464         if (err)
2465                 goto out;
2466
2467         sq->state = new_state;
2468
2469 out:
2470         kvfree(in);
2471         return err;
2472 }
2473
2474 static int modify_raw_packet_qp(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
2475                                 const struct mlx5_modify_raw_qp_param *raw_qp_param,
2476                                 u8 tx_affinity)
2477 {
2478         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
2479         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
2480         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
2481         int rq_state;
2482         int sq_state;
2483         int err;
2484
2485         switch (raw_qp_param->operation) {
2486         case MLX5_CMD_OP_RST2INIT_QP:
2487                 rq_state = MLX5_RQC_STATE_RDY;
2488                 sq_state = MLX5_SQC_STATE_RDY;
2489                 break;
2490         case MLX5_CMD_OP_2ERR_QP:
2491                 rq_state = MLX5_RQC_STATE_ERR;
2492                 sq_state = MLX5_SQC_STATE_ERR;
2493                 break;
2494         case MLX5_CMD_OP_2RST_QP:
2495                 rq_state = MLX5_RQC_STATE_RST;
2496                 sq_state = MLX5_SQC_STATE_RST;
2497                 break;
2498         case MLX5_CMD_OP_INIT2INIT_QP:
2499         case MLX5_CMD_OP_INIT2RTR_QP:
2500         case MLX5_CMD_OP_RTR2RTS_QP:
2501         case MLX5_CMD_OP_RTS2RTS_QP:
2502                 if (raw_qp_param->set_mask)
2503                         return -EINVAL;
2504                 else
2505                         return 0;
2506         default:
2507                 WARN_ON(1);
2508                 return -EINVAL;
2509         }
2510
2511         if (qp->rq.wqe_cnt) {
2512                 err = modify_raw_packet_qp_rq(dev, rq, rq_state, raw_qp_param);
2513                 if (err)
2514                         return err;
2515         }
2516
2517         if (qp->sq.wqe_cnt) {
2518                 if (tx_affinity) {
2519                         err = modify_raw_packet_tx_affinity(dev->mdev, sq,
2520                                                             tx_affinity);
2521                         if (err)
2522                                 return err;
2523                 }
2524
2525                 return modify_raw_packet_qp_sq(dev->mdev, sq, sq_state);
2526         }
2527
2528         return 0;
2529 }
2530
2531 static int __mlx5_ib_modify_qp(struct ib_qp *ibqp,
2532                                const struct ib_qp_attr *attr, int attr_mask,
2533                                enum ib_qp_state cur_state, enum ib_qp_state new_state)
2534 {
2535         static const u16 optab[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE] = {
2536                 [MLX5_QP_STATE_RST] = {
2537                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2538                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2539                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_RST2INIT_QP,
2540                 },
2541                 [MLX5_QP_STATE_INIT]  = {
2542                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2543                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2544                         [MLX5_QP_STATE_INIT]    = MLX5_CMD_OP_INIT2INIT_QP,
2545                         [MLX5_QP_STATE_RTR]     = MLX5_CMD_OP_INIT2RTR_QP,
2546                 },
2547                 [MLX5_QP_STATE_RTR]   = {
2548                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2549                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2550                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTR2RTS_QP,
2551                 },
2552                 [MLX5_QP_STATE_RTS]   = {
2553                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2554                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2555                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_RTS2RTS_QP,
2556                 },
2557                 [MLX5_QP_STATE_SQD] = {
2558                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2559                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2560                 },
2561                 [MLX5_QP_STATE_SQER] = {
2562                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2563                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2564                         [MLX5_QP_STATE_RTS]     = MLX5_CMD_OP_SQERR2RTS_QP,
2565                 },
2566                 [MLX5_QP_STATE_ERR] = {
2567                         [MLX5_QP_STATE_RST]     = MLX5_CMD_OP_2RST_QP,
2568                         [MLX5_QP_STATE_ERR]     = MLX5_CMD_OP_2ERR_QP,
2569                 }
2570         };
2571
2572         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2573         struct mlx5_ib_qp *qp = to_mqp(ibqp);
2574         struct mlx5_ib_qp_base *base = &qp->trans_qp.base;
2575         struct mlx5_ib_cq *send_cq, *recv_cq;
2576         struct mlx5_qp_context *context;
2577         struct mlx5_ib_pd *pd;
2578         struct mlx5_ib_port *mibport = NULL;
2579         enum mlx5_qp_state mlx5_cur, mlx5_new;
2580         enum mlx5_qp_optpar optpar;
2581         int sqd_event;
2582         int mlx5_st;
2583         int err;
2584         u16 op;
2585         u8 tx_affinity = 0;
2586
2587         context = kzalloc(sizeof(*context), GFP_KERNEL);
2588         if (!context)
2589                 return -ENOMEM;
2590
2591         err = to_mlx5_st(ibqp->qp_type);
2592         if (err < 0) {
2593                 mlx5_ib_dbg(dev, "unsupported qp type %d\n", ibqp->qp_type);
2594                 goto out;
2595         }
2596
2597         context->flags = cpu_to_be32(err << 16);
2598
2599         if (!(attr_mask & IB_QP_PATH_MIG_STATE)) {
2600                 context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
2601         } else {
2602                 switch (attr->path_mig_state) {
2603                 case IB_MIG_MIGRATED:
2604                         context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11);
2605                         break;
2606                 case IB_MIG_REARM:
2607                         context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11);
2608                         break;
2609                 case IB_MIG_ARMED:
2610                         context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11);
2611                         break;
2612                 }
2613         }
2614
2615         if ((cur_state == IB_QPS_RESET) && (new_state == IB_QPS_INIT)) {
2616                 if ((ibqp->qp_type == IB_QPT_RC) ||
2617                     (ibqp->qp_type == IB_QPT_UD &&
2618                      !(qp->flags & MLX5_IB_QP_SQPN_QP1)) ||
2619                     (ibqp->qp_type == IB_QPT_UC) ||
2620                     (ibqp->qp_type == IB_QPT_RAW_PACKET) ||
2621                     (ibqp->qp_type == IB_QPT_XRC_INI) ||
2622                     (ibqp->qp_type == IB_QPT_XRC_TGT)) {
2623                         if (mlx5_lag_is_active(dev->mdev)) {
2624                                 tx_affinity = (unsigned int)atomic_add_return(1,
2625                                                 &dev->roce.next_port) %
2626                                                 MLX5_MAX_PORTS + 1;
2627                                 context->flags |= cpu_to_be32(tx_affinity << 24);
2628                         }
2629                 }
2630         }
2631
2632         if (is_sqp(ibqp->qp_type)) {
2633                 context->mtu_msgmax = (IB_MTU_256 << 5) | 8;
2634         } else if (ibqp->qp_type == IB_QPT_UD ||
2635                    ibqp->qp_type == MLX5_IB_QPT_REG_UMR) {
2636                 context->mtu_msgmax = (IB_MTU_4096 << 5) | 12;
2637         } else if (attr_mask & IB_QP_PATH_MTU) {
2638                 if (attr->path_mtu < IB_MTU_256 ||
2639                     attr->path_mtu > IB_MTU_4096) {
2640                         mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu);
2641                         err = -EINVAL;
2642                         goto out;
2643                 }
2644                 context->mtu_msgmax = (attr->path_mtu << 5) |
2645                                       (u8)MLX5_CAP_GEN(dev->mdev, log_max_msg);
2646         }
2647
2648         if (attr_mask & IB_QP_DEST_QPN)
2649                 context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num);
2650
2651         if (attr_mask & IB_QP_PKEY_INDEX)
2652                 context->pri_path.pkey_index = cpu_to_be16(attr->pkey_index);
2653
2654         /* todo implement counter_index functionality */
2655
2656         if (is_sqp(ibqp->qp_type))
2657                 context->pri_path.port = qp->port;
2658
2659         if (attr_mask & IB_QP_PORT)
2660                 context->pri_path.port = attr->port_num;
2661
2662         if (attr_mask & IB_QP_AV) {
2663                 err = mlx5_set_path(dev, qp, &attr->ah_attr, &context->pri_path,
2664                                     attr_mask & IB_QP_PORT ? attr->port_num : qp->port,
2665                                     attr_mask, 0, attr, false);
2666                 if (err)
2667                         goto out;
2668         }
2669
2670         if (attr_mask & IB_QP_TIMEOUT)
2671                 context->pri_path.ackto_lt |= attr->timeout << 3;
2672
2673         if (attr_mask & IB_QP_ALT_PATH) {
2674                 err = mlx5_set_path(dev, qp, &attr->alt_ah_attr,
2675                                     &context->alt_path,
2676                                     attr->alt_port_num,
2677                                     attr_mask | IB_QP_PKEY_INDEX | IB_QP_TIMEOUT,
2678                                     0, attr, true);
2679                 if (err)
2680                         goto out;
2681         }
2682
2683         pd = get_pd(qp);
2684         get_cqs(qp->ibqp.qp_type, qp->ibqp.send_cq, qp->ibqp.recv_cq,
2685                 &send_cq, &recv_cq);
2686
2687         context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn);
2688         context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0;
2689         context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0;
2690         context->params1  = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28);
2691
2692         if (attr_mask & IB_QP_RNR_RETRY)
2693                 context->params1 |= cpu_to_be32(attr->rnr_retry << 13);
2694
2695         if (attr_mask & IB_QP_RETRY_CNT)
2696                 context->params1 |= cpu_to_be32(attr->retry_cnt << 16);
2697
2698         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2699                 if (attr->max_rd_atomic)
2700                         context->params1 |=
2701                                 cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21);
2702         }
2703
2704         if (attr_mask & IB_QP_SQ_PSN)
2705                 context->next_send_psn = cpu_to_be32(attr->sq_psn);
2706
2707         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2708                 if (attr->max_dest_rd_atomic)
2709                         context->params2 |=
2710                                 cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21);
2711         }
2712
2713         if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC))
2714                 context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask);
2715
2716         if (attr_mask & IB_QP_MIN_RNR_TIMER)
2717                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24);
2718
2719         if (attr_mask & IB_QP_RQ_PSN)
2720                 context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn);
2721
2722         if (attr_mask & IB_QP_QKEY)
2723                 context->qkey = cpu_to_be32(attr->qkey);
2724
2725         if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
2726                 context->db_rec_addr = cpu_to_be64(qp->db.dma);
2727
2728         if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD  &&
2729             attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify)
2730                 sqd_event = 1;
2731         else
2732                 sqd_event = 0;
2733
2734         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
2735                 u8 port_num = (attr_mask & IB_QP_PORT ? attr->port_num :
2736                                qp->port) - 1;
2737                 mibport = &dev->port[port_num];
2738                 context->qp_counter_set_usr_page |=
2739                         cpu_to_be32((u32)(mibport->q_cnt_id) << 24);
2740         }
2741
2742         if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT)
2743                 context->sq_crq_size |= cpu_to_be16(1 << 4);
2744
2745         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
2746                 context->deth_sqpn = cpu_to_be32(1);
2747
2748         mlx5_cur = to_mlx5_state(cur_state);
2749         mlx5_new = to_mlx5_state(new_state);
2750         mlx5_st = to_mlx5_st(ibqp->qp_type);
2751         if (mlx5_st < 0)
2752                 goto out;
2753
2754         /* If moving to a reset or error state, we must disable page faults on
2755          * this QP and flush all current page faults. Otherwise a stale page
2756          * fault may attempt to work on this QP after it is reset and moved
2757          * again to RTS, and may cause the driver and the device to get out of
2758          * sync. */
2759         if (cur_state != IB_QPS_RESET && cur_state != IB_QPS_ERR &&
2760             (new_state == IB_QPS_RESET || new_state == IB_QPS_ERR) &&
2761             (qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
2762                 mlx5_ib_qp_disable_pagefaults(qp);
2763
2764         if (mlx5_cur >= MLX5_QP_NUM_STATE || mlx5_new >= MLX5_QP_NUM_STATE ||
2765             !optab[mlx5_cur][mlx5_new])
2766                 goto out;
2767
2768         op = optab[mlx5_cur][mlx5_new];
2769         optpar = ib_mask_to_mlx5_opt(attr_mask);
2770         optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st];
2771
2772         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
2773                 struct mlx5_modify_raw_qp_param raw_qp_param = {};
2774
2775                 raw_qp_param.operation = op;
2776                 if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) {
2777                         raw_qp_param.rq_q_ctr_id = mibport->q_cnt_id;
2778                         raw_qp_param.set_mask |= MLX5_RAW_QP_MOD_SET_RQ_Q_CTR_ID;
2779                 }
2780                 err = modify_raw_packet_qp(dev, qp, &raw_qp_param, tx_affinity);
2781         } else {
2782                 err = mlx5_core_qp_modify(dev->mdev, op, optpar, context,
2783                                           &base->mqp);
2784         }
2785
2786         if (err)
2787                 goto out;
2788
2789         if (cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT &&
2790             (qp->ibqp.qp_type != IB_QPT_RAW_PACKET))
2791                 mlx5_ib_qp_enable_pagefaults(qp);
2792
2793         qp->state = new_state;
2794
2795         if (attr_mask & IB_QP_ACCESS_FLAGS)
2796                 qp->trans_qp.atomic_rd_en = attr->qp_access_flags;
2797         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)
2798                 qp->trans_qp.resp_depth = attr->max_dest_rd_atomic;
2799         if (attr_mask & IB_QP_PORT)
2800                 qp->port = attr->port_num;
2801         if (attr_mask & IB_QP_ALT_PATH)
2802                 qp->trans_qp.alt_port = attr->alt_port_num;
2803
2804         /*
2805          * If we moved a kernel QP to RESET, clean up all old CQ
2806          * entries and reinitialize the QP.
2807          */
2808         if (new_state == IB_QPS_RESET && !ibqp->uobject) {
2809                 mlx5_ib_cq_clean(recv_cq, base->mqp.qpn,
2810                                  ibqp->srq ? to_msrq(ibqp->srq) : NULL);
2811                 if (send_cq != recv_cq)
2812                         mlx5_ib_cq_clean(send_cq, base->mqp.qpn, NULL);
2813
2814                 qp->rq.head = 0;
2815                 qp->rq.tail = 0;
2816                 qp->sq.head = 0;
2817                 qp->sq.tail = 0;
2818                 qp->sq.cur_post = 0;
2819                 qp->sq.last_poll = 0;
2820                 qp->db.db[MLX5_RCV_DBR] = 0;
2821                 qp->db.db[MLX5_SND_DBR] = 0;
2822         }
2823
2824 out:
2825         kfree(context);
2826         return err;
2827 }
2828
2829 int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
2830                       int attr_mask, struct ib_udata *udata)
2831 {
2832         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
2833         struct mlx5_ib_qp *qp = to_mqp(ibqp);
2834         enum ib_qp_type qp_type;
2835         enum ib_qp_state cur_state, new_state;
2836         int err = -EINVAL;
2837         int port;
2838         enum rdma_link_layer ll = IB_LINK_LAYER_UNSPECIFIED;
2839
2840         if (ibqp->rwq_ind_tbl)
2841                 return -ENOSYS;
2842
2843         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
2844                 return mlx5_ib_gsi_modify_qp(ibqp, attr, attr_mask);
2845
2846         qp_type = (unlikely(ibqp->qp_type == MLX5_IB_QPT_HW_GSI)) ?
2847                 IB_QPT_GSI : ibqp->qp_type;
2848
2849         mutex_lock(&qp->mutex);
2850
2851         cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state;
2852         new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state;
2853
2854         if (!(cur_state == new_state && cur_state == IB_QPS_RESET)) {
2855                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
2856                 ll = dev->ib_dev.get_link_layer(&dev->ib_dev, port);
2857         }
2858
2859         if (qp_type != MLX5_IB_QPT_REG_UMR &&
2860             !ib_modify_qp_is_ok(cur_state, new_state, qp_type, attr_mask, ll)) {
2861                 mlx5_ib_dbg(dev, "invalid QP state transition from %d to %d, qp_type %d, attr_mask 0x%x\n",
2862                             cur_state, new_state, ibqp->qp_type, attr_mask);
2863                 goto out;
2864         }
2865
2866         if ((attr_mask & IB_QP_PORT) &&
2867             (attr->port_num == 0 ||
2868              attr->port_num > MLX5_CAP_GEN(dev->mdev, num_ports))) {
2869                 mlx5_ib_dbg(dev, "invalid port number %d. number of ports is %d\n",
2870                             attr->port_num, dev->num_ports);
2871                 goto out;
2872         }
2873
2874         if (attr_mask & IB_QP_PKEY_INDEX) {
2875                 port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port;
2876                 if (attr->pkey_index >=
2877                     dev->mdev->port_caps[port - 1].pkey_table_len) {
2878                         mlx5_ib_dbg(dev, "invalid pkey index %d\n",
2879                                     attr->pkey_index);
2880                         goto out;
2881                 }
2882         }
2883
2884         if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC &&
2885             attr->max_rd_atomic >
2886             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_res_qp))) {
2887                 mlx5_ib_dbg(dev, "invalid max_rd_atomic value %d\n",
2888                             attr->max_rd_atomic);
2889                 goto out;
2890         }
2891
2892         if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC &&
2893             attr->max_dest_rd_atomic >
2894             (1 << MLX5_CAP_GEN(dev->mdev, log_max_ra_req_qp))) {
2895                 mlx5_ib_dbg(dev, "invalid max_dest_rd_atomic value %d\n",
2896                             attr->max_dest_rd_atomic);
2897                 goto out;
2898         }
2899
2900         if (cur_state == new_state && cur_state == IB_QPS_RESET) {
2901                 err = 0;
2902                 goto out;
2903         }
2904
2905         err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state);
2906
2907 out:
2908         mutex_unlock(&qp->mutex);
2909         return err;
2910 }
2911
2912 static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq)
2913 {
2914         struct mlx5_ib_cq *cq;
2915         unsigned cur;
2916
2917         cur = wq->head - wq->tail;
2918         if (likely(cur + nreq < wq->max_post))
2919                 return 0;
2920
2921         cq = to_mcq(ib_cq);
2922         spin_lock(&cq->lock);
2923         cur = wq->head - wq->tail;
2924         spin_unlock(&cq->lock);
2925
2926         return cur + nreq >= wq->max_post;
2927 }
2928
2929 static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg,
2930                                           u64 remote_addr, u32 rkey)
2931 {
2932         rseg->raddr    = cpu_to_be64(remote_addr);
2933         rseg->rkey     = cpu_to_be32(rkey);
2934         rseg->reserved = 0;
2935 }
2936
2937 static void *set_eth_seg(struct mlx5_wqe_eth_seg *eseg,
2938                          struct ib_send_wr *wr, void *qend,
2939                          struct mlx5_ib_qp *qp, int *size)
2940 {
2941         void *seg = eseg;
2942
2943         memset(eseg, 0, sizeof(struct mlx5_wqe_eth_seg));
2944
2945         if (wr->send_flags & IB_SEND_IP_CSUM)
2946                 eseg->cs_flags = MLX5_ETH_WQE_L3_CSUM |
2947                                  MLX5_ETH_WQE_L4_CSUM;
2948
2949         seg += sizeof(struct mlx5_wqe_eth_seg);
2950         *size += sizeof(struct mlx5_wqe_eth_seg) / 16;
2951
2952         if (wr->opcode == IB_WR_LSO) {
2953                 struct ib_ud_wr *ud_wr = container_of(wr, struct ib_ud_wr, wr);
2954                 int size_of_inl_hdr_start = sizeof(eseg->inline_hdr_start);
2955                 u64 left, leftlen, copysz;
2956                 void *pdata = ud_wr->header;
2957
2958                 left = ud_wr->hlen;
2959                 eseg->mss = cpu_to_be16(ud_wr->mss);
2960                 eseg->inline_hdr_sz = cpu_to_be16(left);
2961
2962                 /*
2963                  * check if there is space till the end of queue, if yes,
2964                  * copy all in one shot, otherwise copy till the end of queue,
2965                  * rollback and than the copy the left
2966                  */
2967                 leftlen = qend - (void *)eseg->inline_hdr_start;
2968                 copysz = min_t(u64, leftlen, left);
2969
2970                 memcpy(seg - size_of_inl_hdr_start, pdata, copysz);
2971
2972                 if (likely(copysz > size_of_inl_hdr_start)) {
2973                         seg += ALIGN(copysz - size_of_inl_hdr_start, 16);
2974                         *size += ALIGN(copysz - size_of_inl_hdr_start, 16) / 16;
2975                 }
2976
2977                 if (unlikely(copysz < left)) { /* the last wqe in the queue */
2978                         seg = mlx5_get_send_wqe(qp, 0);
2979                         left -= copysz;
2980                         pdata += copysz;
2981                         memcpy(seg, pdata, left);
2982                         seg += ALIGN(left, 16);
2983                         *size += ALIGN(left, 16) / 16;
2984                 }
2985         }
2986
2987         return seg;
2988 }
2989
2990 static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg,
2991                              struct ib_send_wr *wr)
2992 {
2993         memcpy(&dseg->av, &to_mah(ud_wr(wr)->ah)->av, sizeof(struct mlx5_av));
2994         dseg->av.dqp_dct = cpu_to_be32(ud_wr(wr)->remote_qpn | MLX5_EXTENDED_UD_AV);
2995         dseg->av.key.qkey.qkey = cpu_to_be32(ud_wr(wr)->remote_qkey);
2996 }
2997
2998 static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg)
2999 {
3000         dseg->byte_count = cpu_to_be32(sg->length);
3001         dseg->lkey       = cpu_to_be32(sg->lkey);
3002         dseg->addr       = cpu_to_be64(sg->addr);
3003 }
3004
3005 static __be16 get_klm_octo(int npages)
3006 {
3007         return cpu_to_be16(ALIGN(npages, 8) / 2);
3008 }
3009
3010 static __be64 frwr_mkey_mask(void)
3011 {
3012         u64 result;
3013
3014         result = MLX5_MKEY_MASK_LEN             |
3015                 MLX5_MKEY_MASK_PAGE_SIZE        |
3016                 MLX5_MKEY_MASK_START_ADDR       |
3017                 MLX5_MKEY_MASK_EN_RINVAL        |
3018                 MLX5_MKEY_MASK_KEY              |
3019                 MLX5_MKEY_MASK_LR               |
3020                 MLX5_MKEY_MASK_LW               |
3021                 MLX5_MKEY_MASK_RR               |
3022                 MLX5_MKEY_MASK_RW               |
3023                 MLX5_MKEY_MASK_A                |
3024                 MLX5_MKEY_MASK_SMALL_FENCE      |
3025                 MLX5_MKEY_MASK_FREE;
3026
3027         return cpu_to_be64(result);
3028 }
3029
3030 static __be64 sig_mkey_mask(void)
3031 {
3032         u64 result;
3033
3034         result = MLX5_MKEY_MASK_LEN             |
3035                 MLX5_MKEY_MASK_PAGE_SIZE        |
3036                 MLX5_MKEY_MASK_START_ADDR       |
3037                 MLX5_MKEY_MASK_EN_SIGERR        |
3038                 MLX5_MKEY_MASK_EN_RINVAL        |
3039                 MLX5_MKEY_MASK_KEY              |
3040                 MLX5_MKEY_MASK_LR               |
3041                 MLX5_MKEY_MASK_LW               |
3042                 MLX5_MKEY_MASK_RR               |
3043                 MLX5_MKEY_MASK_RW               |
3044                 MLX5_MKEY_MASK_SMALL_FENCE      |
3045                 MLX5_MKEY_MASK_FREE             |
3046                 MLX5_MKEY_MASK_BSF_EN;
3047
3048         return cpu_to_be64(result);
3049 }
3050
3051 static void set_reg_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr,
3052                                 struct mlx5_ib_mr *mr)
3053 {
3054         int ndescs = mr->ndescs;
3055
3056         memset(umr, 0, sizeof(*umr));
3057
3058         if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
3059                 /* KLMs take twice the size of MTTs */
3060                 ndescs *= 2;
3061
3062         umr->flags = MLX5_UMR_CHECK_NOT_FREE;
3063         umr->klm_octowords = get_klm_octo(ndescs);
3064         umr->mkey_mask = frwr_mkey_mask();
3065 }
3066
3067 static void set_linv_umr_seg(struct mlx5_wqe_umr_ctrl_seg *umr)
3068 {
3069         memset(umr, 0, sizeof(*umr));
3070         umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE);
3071         umr->flags = 1 << 7;
3072 }
3073
3074 static __be64 get_umr_reg_mr_mask(void)
3075 {
3076         u64 result;
3077
3078         result = MLX5_MKEY_MASK_LEN             |
3079                  MLX5_MKEY_MASK_PAGE_SIZE       |
3080                  MLX5_MKEY_MASK_START_ADDR      |
3081                  MLX5_MKEY_MASK_PD              |
3082                  MLX5_MKEY_MASK_LR              |
3083                  MLX5_MKEY_MASK_LW              |
3084                  MLX5_MKEY_MASK_KEY             |
3085                  MLX5_MKEY_MASK_RR              |
3086                  MLX5_MKEY_MASK_RW              |
3087                  MLX5_MKEY_MASK_A               |
3088                  MLX5_MKEY_MASK_FREE;
3089
3090         return cpu_to_be64(result);
3091 }
3092
3093 static __be64 get_umr_unreg_mr_mask(void)
3094 {
3095         u64 result;
3096
3097         result = MLX5_MKEY_MASK_FREE;
3098
3099         return cpu_to_be64(result);
3100 }
3101
3102 static __be64 get_umr_update_mtt_mask(void)
3103 {
3104         u64 result;
3105
3106         result = MLX5_MKEY_MASK_FREE;
3107
3108         return cpu_to_be64(result);
3109 }
3110
3111 static __be64 get_umr_update_translation_mask(void)
3112 {
3113         u64 result;
3114
3115         result = MLX5_MKEY_MASK_LEN |
3116                  MLX5_MKEY_MASK_PAGE_SIZE |
3117                  MLX5_MKEY_MASK_START_ADDR |
3118                  MLX5_MKEY_MASK_KEY |
3119                  MLX5_MKEY_MASK_FREE;
3120
3121         return cpu_to_be64(result);
3122 }
3123
3124 static __be64 get_umr_update_access_mask(void)
3125 {
3126         u64 result;
3127
3128         result = MLX5_MKEY_MASK_LW |
3129                  MLX5_MKEY_MASK_RR |
3130                  MLX5_MKEY_MASK_RW |
3131                  MLX5_MKEY_MASK_A |
3132                  MLX5_MKEY_MASK_KEY |
3133                  MLX5_MKEY_MASK_FREE;
3134
3135         return cpu_to_be64(result);
3136 }
3137
3138 static __be64 get_umr_update_pd_mask(void)
3139 {
3140         u64 result;
3141
3142         result = MLX5_MKEY_MASK_PD |
3143                  MLX5_MKEY_MASK_KEY |
3144                  MLX5_MKEY_MASK_FREE;
3145
3146         return cpu_to_be64(result);
3147 }
3148
3149 static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
3150                                 struct ib_send_wr *wr)
3151 {
3152         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3153
3154         memset(umr, 0, sizeof(*umr));
3155
3156         if (wr->send_flags & MLX5_IB_SEND_UMR_FAIL_IF_FREE)
3157                 umr->flags = MLX5_UMR_CHECK_FREE; /* fail if free */
3158         else
3159                 umr->flags = MLX5_UMR_CHECK_NOT_FREE; /* fail if not free */
3160
3161         if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) {
3162                 umr->klm_octowords = get_klm_octo(umrwr->npages);
3163                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT) {
3164                         umr->mkey_mask = get_umr_update_mtt_mask();
3165                         umr->bsf_octowords = get_klm_octo(umrwr->target.offset);
3166                         umr->flags |= MLX5_UMR_TRANSLATION_OFFSET_EN;
3167                 }
3168                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_TRANSLATION)
3169                         umr->mkey_mask |= get_umr_update_translation_mask();
3170                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_ACCESS)
3171                         umr->mkey_mask |= get_umr_update_access_mask();
3172                 if (wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_PD)
3173                         umr->mkey_mask |= get_umr_update_pd_mask();
3174                 if (!umr->mkey_mask)
3175                         umr->mkey_mask = get_umr_reg_mr_mask();
3176         } else {
3177                 umr->mkey_mask = get_umr_unreg_mr_mask();
3178         }
3179
3180         if (!wr->num_sge)
3181                 umr->flags |= MLX5_UMR_INLINE;
3182 }
3183
3184 static u8 get_umr_flags(int acc)
3185 {
3186         return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC       : 0) |
3187                (acc & IB_ACCESS_REMOTE_WRITE  ? MLX5_PERM_REMOTE_WRITE : 0) |
3188                (acc & IB_ACCESS_REMOTE_READ   ? MLX5_PERM_REMOTE_READ  : 0) |
3189                (acc & IB_ACCESS_LOCAL_WRITE   ? MLX5_PERM_LOCAL_WRITE  : 0) |
3190                 MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN;
3191 }
3192
3193 static void set_reg_mkey_seg(struct mlx5_mkey_seg *seg,
3194                              struct mlx5_ib_mr *mr,
3195                              u32 key, int access)
3196 {
3197         int ndescs = ALIGN(mr->ndescs, 8) >> 1;
3198
3199         memset(seg, 0, sizeof(*seg));
3200
3201         if (mr->access_mode == MLX5_MKC_ACCESS_MODE_MTT)
3202                 seg->log2_page_size = ilog2(mr->ibmr.page_size);
3203         else if (mr->access_mode == MLX5_MKC_ACCESS_MODE_KLMS)
3204                 /* KLMs take twice the size of MTTs */
3205                 ndescs *= 2;
3206
3207         seg->flags = get_umr_flags(access) | mr->access_mode;
3208         seg->qpn_mkey7_0 = cpu_to_be32((key & 0xff) | 0xffffff00);
3209         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL);
3210         seg->start_addr = cpu_to_be64(mr->ibmr.iova);
3211         seg->len = cpu_to_be64(mr->ibmr.length);
3212         seg->xlt_oct_size = cpu_to_be32(ndescs);
3213 }
3214
3215 static void set_linv_mkey_seg(struct mlx5_mkey_seg *seg)
3216 {
3217         memset(seg, 0, sizeof(*seg));
3218         seg->status = MLX5_MKEY_STATUS_FREE;
3219 }
3220
3221 static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr)
3222 {
3223         struct mlx5_umr_wr *umrwr = umr_wr(wr);
3224
3225         memset(seg, 0, sizeof(*seg));
3226         if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) {
3227                 seg->status = MLX5_MKEY_STATUS_FREE;
3228                 return;
3229         }
3230
3231         seg->flags = convert_access(umrwr->access_flags);
3232         if (!(wr->send_flags & MLX5_IB_SEND_UMR_UPDATE_MTT)) {
3233                 if (umrwr->pd)
3234                         seg->flags_pd = cpu_to_be32(to_mpd(umrwr->pd)->pdn);
3235                 seg->start_addr = cpu_to_be64(umrwr->target.virt_addr);
3236         }
3237         seg->len = cpu_to_be64(umrwr->length);
3238         seg->log2_page_size = umrwr->page_shift;
3239         seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 |
3240                                        mlx5_mkey_variant(umrwr->mkey));
3241 }
3242
3243 static void set_reg_data_seg(struct mlx5_wqe_data_seg *dseg,
3244                              struct mlx5_ib_mr *mr,
3245                              struct mlx5_ib_pd *pd)
3246 {
3247         int bcount = mr->desc_size * mr->ndescs;
3248
3249         dseg->addr = cpu_to_be64(mr->desc_map);
3250         dseg->byte_count = cpu_to_be32(ALIGN(bcount, 64));
3251         dseg->lkey = cpu_to_be32(pd->ibpd.local_dma_lkey);
3252 }
3253
3254 static __be32 send_ieth(struct ib_send_wr *wr)
3255 {
3256         switch (wr->opcode) {
3257         case IB_WR_SEND_WITH_IMM:
3258         case IB_WR_RDMA_WRITE_WITH_IMM:
3259                 return wr->ex.imm_data;
3260
3261         case IB_WR_SEND_WITH_INV:
3262                 return cpu_to_be32(wr->ex.invalidate_rkey);
3263
3264         default:
3265                 return 0;
3266         }
3267 }
3268
3269 static u8 calc_sig(void *wqe, int size)
3270 {
3271         u8 *p = wqe;
3272         u8 res = 0;
3273         int i;
3274
3275         for (i = 0; i < size; i++)
3276                 res ^= p[i];
3277
3278         return ~res;
3279 }
3280
3281 static u8 wq_sig(void *wqe)
3282 {
3283         return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4);
3284 }
3285
3286 static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr,
3287                             void *wqe, int *sz)
3288 {
3289         struct mlx5_wqe_inline_seg *seg;
3290         void *qend = qp->sq.qend;
3291         void *addr;
3292         int inl = 0;
3293         int copy;
3294         int len;
3295         int i;
3296
3297         seg = wqe;
3298         wqe += sizeof(*seg);
3299         for (i = 0; i < wr->num_sge; i++) {
3300                 addr = (void *)(unsigned long)(wr->sg_list[i].addr);
3301                 len  = wr->sg_list[i].length;
3302                 inl += len;
3303
3304                 if (unlikely(inl > qp->max_inline_data))
3305                         return -ENOMEM;
3306
3307                 if (unlikely(wqe + len > qend)) {
3308                         copy = qend - wqe;
3309                         memcpy(wqe, addr, copy);
3310                         addr += copy;
3311                         len -= copy;
3312                         wqe = mlx5_get_send_wqe(qp, 0);
3313                 }
3314                 memcpy(wqe, addr, len);
3315                 wqe += len;
3316         }
3317
3318         seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG);
3319
3320         *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16;
3321
3322         return 0;
3323 }
3324
3325 static u16 prot_field_size(enum ib_signature_type type)
3326 {
3327         switch (type) {
3328         case IB_SIG_TYPE_T10_DIF:
3329                 return MLX5_DIF_SIZE;
3330         default:
3331                 return 0;
3332         }
3333 }
3334
3335 static u8 bs_selector(int block_size)
3336 {
3337         switch (block_size) {
3338         case 512:           return 0x1;
3339         case 520:           return 0x2;
3340         case 4096:          return 0x3;
3341         case 4160:          return 0x4;
3342         case 1073741824:    return 0x5;
3343         default:            return 0;
3344         }
3345 }
3346
3347 static void mlx5_fill_inl_bsf(struct ib_sig_domain *domain,
3348                               struct mlx5_bsf_inl *inl)
3349 {
3350         /* Valid inline section and allow BSF refresh */
3351         inl->vld_refresh = cpu_to_be16(MLX5_BSF_INL_VALID |
3352                                        MLX5_BSF_REFRESH_DIF);
3353         inl->dif_apptag = cpu_to_be16(domain->sig.dif.app_tag);
3354         inl->dif_reftag = cpu_to_be32(domain->sig.dif.ref_tag);
3355         /* repeating block */
3356         inl->rp_inv_seed = MLX5_BSF_REPEAT_BLOCK;
3357         inl->sig_type = domain->sig.dif.bg_type == IB_T10DIF_CRC ?
3358                         MLX5_DIF_CRC : MLX5_DIF_IPCS;
3359
3360         if (domain->sig.dif.ref_remap)
3361                 inl->dif_inc_ref_guard_check |= MLX5_BSF_INC_REFTAG;
3362
3363         if (domain->sig.dif.app_escape) {
3364                 if (domain->sig.dif.ref_escape)
3365                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPREF_ESCAPE;
3366                 else
3367                         inl->dif_inc_ref_guard_check |= MLX5_BSF_APPTAG_ESCAPE;
3368         }
3369
3370         inl->dif_app_bitmask_check =
3371                 cpu_to_be16(domain->sig.dif.apptag_check_mask);
3372 }
3373
3374 static int mlx5_set_bsf(struct ib_mr *sig_mr,
3375                         struct ib_sig_attrs *sig_attrs,
3376                         struct mlx5_bsf *bsf, u32 data_size)
3377 {
3378         struct mlx5_core_sig_ctx *msig = to_mmr(sig_mr)->sig;
3379         struct mlx5_bsf_basic *basic = &bsf->basic;
3380         struct ib_sig_domain *mem = &sig_attrs->mem;
3381         struct ib_sig_domain *wire = &sig_attrs->wire;
3382
3383         memset(bsf, 0, sizeof(*bsf));
3384
3385         /* Basic + Extended + Inline */
3386         basic->bsf_size_sbs = 1 << 7;
3387         /* Input domain check byte mask */
3388         basic->check_byte_mask = sig_attrs->check_mask;
3389         basic->raw_data_size = cpu_to_be32(data_size);
3390
3391         /* Memory domain */
3392         switch (sig_attrs->mem.sig_type) {
3393         case IB_SIG_TYPE_NONE:
3394                 break;
3395         case IB_SIG_TYPE_T10_DIF:
3396                 basic->mem.bs_selector = bs_selector(mem->sig.dif.pi_interval);
3397                 basic->m_bfs_psv = cpu_to_be32(msig->psv_memory.psv_idx);
3398                 mlx5_fill_inl_bsf(mem, &bsf->m_inl);
3399                 break;
3400         default:
3401                 return -EINVAL;
3402         }
3403
3404         /* Wire domain */
3405         switch (sig_attrs->wire.sig_type) {
3406         case IB_SIG_TYPE_NONE:
3407                 break;
3408         case IB_SIG_TYPE_T10_DIF:
3409                 if (mem->sig.dif.pi_interval == wire->sig.dif.pi_interval &&
3410                     mem->sig_type == wire->sig_type) {
3411                         /* Same block structure */
3412                         basic->bsf_size_sbs |= 1 << 4;
3413                         if (mem->sig.dif.bg_type == wire->sig.dif.bg_type)
3414                                 basic->wire.copy_byte_mask |= MLX5_CPY_GRD_MASK;
3415                         if (mem->sig.dif.app_tag == wire->sig.dif.app_tag)
3416                                 basic->wire.copy_byte_mask |= MLX5_CPY_APP_MASK;
3417                         if (mem->sig.dif.ref_tag == wire->sig.dif.ref_tag)
3418                                 basic->wire.copy_byte_mask |= MLX5_CPY_REF_MASK;
3419                 } else
3420                         basic->wire.bs_selector = bs_selector(wire->sig.dif.pi_interval);
3421
3422                 basic->w_bfs_psv = cpu_to_be32(msig->psv_wire.psv_idx);
3423                 mlx5_fill_inl_bsf(wire, &bsf->w_inl);
3424                 break;
3425         default:
3426                 return -EINVAL;
3427         }
3428
3429         return 0;
3430 }
3431
3432 static int set_sig_data_segment(struct ib_sig_handover_wr *wr,
3433                                 struct mlx5_ib_qp *qp, void **seg, int *size)
3434 {
3435         struct ib_sig_attrs *sig_attrs = wr->sig_attrs;
3436         struct ib_mr *sig_mr = wr->sig_mr;
3437         struct mlx5_bsf *bsf;
3438         u32 data_len = wr->wr.sg_list->length;
3439         u32 data_key = wr->wr.sg_list->lkey;
3440         u64 data_va = wr->wr.sg_list->addr;
3441         int ret;
3442         int wqe_size;
3443
3444         if (!wr->prot ||
3445             (data_key == wr->prot->lkey &&
3446              data_va == wr->prot->addr &&
3447              data_len == wr->prot->length)) {
3448                 /**
3449                  * Source domain doesn't contain signature information
3450                  * or data and protection are interleaved in memory.
3451                  * So need construct:
3452                  *                  ------------------
3453                  *                 |     data_klm     |
3454                  *                  ------------------
3455                  *                 |       BSF        |
3456                  *                  ------------------
3457                  **/
3458                 struct mlx5_klm *data_klm = *seg;
3459
3460                 data_klm->bcount = cpu_to_be32(data_len);
3461                 data_klm->key = cpu_to_be32(data_key);
3462                 data_klm->va = cpu_to_be64(data_va);
3463                 wqe_size = ALIGN(sizeof(*data_klm), 64);
3464         } else {
3465                 /**
3466                  * Source domain contains signature information
3467                  * So need construct a strided block format:
3468                  *               ---------------------------
3469                  *              |     stride_block_ctrl     |
3470                  *               ---------------------------
3471                  *              |          data_klm         |
3472                  *               ---------------------------
3473                  *              |          prot_klm         |
3474                  *               ---------------------------
3475                  *              |             BSF           |
3476                  *               ---------------------------
3477                  **/
3478                 struct mlx5_stride_block_ctrl_seg *sblock_ctrl;
3479                 struct mlx5_stride_block_entry *data_sentry;
3480                 struct mlx5_stride_block_entry *prot_sentry;
3481                 u32 prot_key = wr->prot->lkey;
3482                 u64 prot_va = wr->prot->addr;
3483                 u16 block_size = sig_attrs->mem.sig.dif.pi_interval;
3484                 int prot_size;
3485
3486                 sblock_ctrl = *seg;
3487                 data_sentry = (void *)sblock_ctrl + sizeof(*sblock_ctrl);
3488                 prot_sentry = (void *)data_sentry + sizeof(*data_sentry);
3489
3490                 prot_size = prot_field_size(sig_attrs->mem.sig_type);
3491                 if (!prot_size) {
3492                         pr_err("Bad block size given: %u\n", block_size);
3493                         return -EINVAL;
3494                 }
3495                 sblock_ctrl->bcount_per_cycle = cpu_to_be32(block_size +
3496                                                             prot_size);
3497                 sblock_ctrl->op = cpu_to_be32(MLX5_STRIDE_BLOCK_OP);
3498                 sblock_ctrl->repeat_count = cpu_to_be32(data_len / block_size);
3499                 sblock_ctrl->num_entries = cpu_to_be16(2);
3500
3501                 data_sentry->bcount = cpu_to_be16(block_size);
3502                 data_sentry->key = cpu_to_be32(data_key);
3503                 data_sentry->va = cpu_to_be64(data_va);
3504                 data_sentry->stride = cpu_to_be16(block_size);
3505
3506                 prot_sentry->bcount = cpu_to_be16(prot_size);
3507                 prot_sentry->key = cpu_to_be32(prot_key);
3508                 prot_sentry->va = cpu_to_be64(prot_va);
3509                 prot_sentry->stride = cpu_to_be16(prot_size);
3510
3511                 wqe_size = ALIGN(sizeof(*sblock_ctrl) + sizeof(*data_sentry) +
3512                                  sizeof(*prot_sentry), 64);
3513         }
3514
3515         *seg += wqe_size;
3516         *size += wqe_size / 16;
3517         if (unlikely((*seg == qp->sq.qend)))
3518                 *seg = mlx5_get_send_wqe(qp, 0);
3519
3520         bsf = *seg;
3521         ret = mlx5_set_bsf(sig_mr, sig_attrs, bsf, data_len);
3522         if (ret)
3523                 return -EINVAL;
3524
3525         *seg += sizeof(*bsf);
3526         *size += sizeof(*bsf) / 16;
3527         if (unlikely((*seg == qp->sq.qend)))
3528                 *seg = mlx5_get_send_wqe(qp, 0);
3529
3530         return 0;
3531 }
3532
3533 static void set_sig_mkey_segment(struct mlx5_mkey_seg *seg,
3534                                  struct ib_sig_handover_wr *wr, u32 nelements,
3535                                  u32 length, u32 pdn)
3536 {
3537         struct ib_mr *sig_mr = wr->sig_mr;
3538         u32 sig_key = sig_mr->rkey;
3539         u8 sigerr = to_mmr(sig_mr)->sig->sigerr_count & 1;
3540
3541         memset(seg, 0, sizeof(*seg));
3542
3543         seg->flags = get_umr_flags(wr->access_flags) |
3544                                    MLX5_MKC_ACCESS_MODE_KLMS;
3545         seg->qpn_mkey7_0 = cpu_to_be32((sig_key & 0xff) | 0xffffff00);
3546         seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL | sigerr << 26 |
3547                                     MLX5_MKEY_BSF_EN | pdn);
3548         seg->len = cpu_to_be64(length);
3549         seg->xlt_oct_size = cpu_to_be32(be16_to_cpu(get_klm_octo(nelements)));
3550         seg->bsfs_octo_size = cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE);
3551 }
3552
3553 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr,
3554                                 u32 nelements)
3555 {
3556         memset(umr, 0, sizeof(*umr));
3557
3558         umr->flags = MLX5_FLAGS_INLINE | MLX5_FLAGS_CHECK_FREE;
3559         umr->klm_octowords = get_klm_octo(nelements);
3560         umr->bsf_octowords = cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE);
3561         umr->mkey_mask = sig_mkey_mask();
3562 }
3563
3564
3565 static int set_sig_umr_wr(struct ib_send_wr *send_wr, struct mlx5_ib_qp *qp,
3566                           void **seg, int *size)
3567 {
3568         struct ib_sig_handover_wr *wr = sig_handover_wr(send_wr);
3569         struct mlx5_ib_mr *sig_mr = to_mmr(wr->sig_mr);
3570         u32 pdn = get_pd(qp)->pdn;
3571         u32 klm_oct_size;
3572         int region_len, ret;
3573
3574         if (unlikely(wr->wr.num_sge != 1) ||
3575             unlikely(wr->access_flags & IB_ACCESS_REMOTE_ATOMIC) ||
3576             unlikely(!sig_mr->sig) || unlikely(!qp->signature_en) ||
3577             unlikely(!sig_mr->sig->sig_status_checked))
3578                 return -EINVAL;
3579
3580         /* length of the protected region, data + protection */
3581         region_len = wr->wr.sg_list->length;
3582         if (wr->prot &&
3583             (wr->prot->lkey != wr->wr.sg_list->lkey  ||
3584              wr->prot->addr != wr->wr.sg_list->addr  ||
3585              wr->prot->length != wr->wr.sg_list->length))
3586                 region_len += wr->prot->length;
3587
3588         /**
3589          * KLM octoword size - if protection was provided
3590          * then we use strided block format (3 octowords),
3591          * else we use single KLM (1 octoword)
3592          **/
3593         klm_oct_size = wr->prot ? 3 : 1;
3594
3595         set_sig_umr_segment(*seg, klm_oct_size);
3596         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3597         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3598         if (unlikely((*seg == qp->sq.qend)))
3599                 *seg = mlx5_get_send_wqe(qp, 0);
3600
3601         set_sig_mkey_segment(*seg, wr, klm_oct_size, region_len, pdn);
3602         *seg += sizeof(struct mlx5_mkey_seg);
3603         *size += sizeof(struct mlx5_mkey_seg) / 16;
3604         if (unlikely((*seg == qp->sq.qend)))
3605                 *seg = mlx5_get_send_wqe(qp, 0);
3606
3607         ret = set_sig_data_segment(wr, qp, seg, size);
3608         if (ret)
3609                 return ret;
3610
3611         sig_mr->sig->sig_status_checked = false;
3612         return 0;
3613 }
3614
3615 static int set_psv_wr(struct ib_sig_domain *domain,
3616                       u32 psv_idx, void **seg, int *size)
3617 {
3618         struct mlx5_seg_set_psv *psv_seg = *seg;
3619
3620         memset(psv_seg, 0, sizeof(*psv_seg));
3621         psv_seg->psv_num = cpu_to_be32(psv_idx);
3622         switch (domain->sig_type) {
3623         case IB_SIG_TYPE_NONE:
3624                 break;
3625         case IB_SIG_TYPE_T10_DIF:
3626                 psv_seg->transient_sig = cpu_to_be32(domain->sig.dif.bg << 16 |
3627                                                      domain->sig.dif.app_tag);
3628                 psv_seg->ref_tag = cpu_to_be32(domain->sig.dif.ref_tag);
3629                 break;
3630         default:
3631                 pr_err("Bad signature type given.\n");
3632                 return 1;
3633         }
3634
3635         *seg += sizeof(*psv_seg);
3636         *size += sizeof(*psv_seg) / 16;
3637
3638         return 0;
3639 }
3640
3641 static int set_reg_wr(struct mlx5_ib_qp *qp,
3642                       struct ib_reg_wr *wr,
3643                       void **seg, int *size)
3644 {
3645         struct mlx5_ib_mr *mr = to_mmr(wr->mr);
3646         struct mlx5_ib_pd *pd = to_mpd(qp->ibqp.pd);
3647
3648         if (unlikely(wr->wr.send_flags & IB_SEND_INLINE)) {
3649                 mlx5_ib_warn(to_mdev(qp->ibqp.device),
3650                              "Invalid IB_SEND_INLINE send flag\n");
3651                 return -EINVAL;
3652         }
3653
3654         set_reg_umr_seg(*seg, mr);
3655         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3656         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3657         if (unlikely((*seg == qp->sq.qend)))
3658                 *seg = mlx5_get_send_wqe(qp, 0);
3659
3660         set_reg_mkey_seg(*seg, mr, wr->key, wr->access);
3661         *seg += sizeof(struct mlx5_mkey_seg);
3662         *size += sizeof(struct mlx5_mkey_seg) / 16;
3663         if (unlikely((*seg == qp->sq.qend)))
3664                 *seg = mlx5_get_send_wqe(qp, 0);
3665
3666         set_reg_data_seg(*seg, mr, pd);
3667         *seg += sizeof(struct mlx5_wqe_data_seg);
3668         *size += (sizeof(struct mlx5_wqe_data_seg) / 16);
3669
3670         return 0;
3671 }
3672
3673 static void set_linv_wr(struct mlx5_ib_qp *qp, void **seg, int *size)
3674 {
3675         set_linv_umr_seg(*seg);
3676         *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
3677         *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
3678         if (unlikely((*seg == qp->sq.qend)))
3679                 *seg = mlx5_get_send_wqe(qp, 0);
3680         set_linv_mkey_seg(*seg);
3681         *seg += sizeof(struct mlx5_mkey_seg);
3682         *size += sizeof(struct mlx5_mkey_seg) / 16;
3683         if (unlikely((*seg == qp->sq.qend)))
3684                 *seg = mlx5_get_send_wqe(qp, 0);
3685 }
3686
3687 static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16)
3688 {
3689         __be32 *p = NULL;
3690         int tidx = idx;
3691         int i, j;
3692
3693         pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx));
3694         for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) {
3695                 if ((i & 0xf) == 0) {
3696                         void *buf = mlx5_get_send_wqe(qp, tidx);
3697                         tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1);
3698                         p = buf;
3699                         j = 0;
3700                 }
3701                 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]),
3702                          be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]),
3703                          be32_to_cpu(p[j + 3]));
3704         }
3705 }
3706
3707 static void mlx5_bf_copy(u64 __iomem *dst, u64 *src,
3708                          unsigned bytecnt, struct mlx5_ib_qp *qp)
3709 {
3710         while (bytecnt > 0) {
3711                 __iowrite64_copy(dst++, src++, 8);
3712                 __iowrite64_copy(dst++, src++, 8);
3713                 __iowrite64_copy(dst++, src++, 8);
3714                 __iowrite64_copy(dst++, src++, 8);
3715                 __iowrite64_copy(dst++, src++, 8);
3716                 __iowrite64_copy(dst++, src++, 8);
3717                 __iowrite64_copy(dst++, src++, 8);
3718                 __iowrite64_copy(dst++, src++, 8);
3719                 bytecnt -= 64;
3720                 if (unlikely(src == qp->sq.qend))
3721                         src = mlx5_get_send_wqe(qp, 0);
3722         }
3723 }
3724
3725 static u8 get_fence(u8 fence, struct ib_send_wr *wr)
3726 {
3727         if (unlikely(wr->opcode == IB_WR_LOCAL_INV &&
3728                      wr->send_flags & IB_SEND_FENCE))
3729                 return MLX5_FENCE_MODE_STRONG_ORDERING;
3730
3731         if (unlikely(fence)) {
3732                 if (wr->send_flags & IB_SEND_FENCE)
3733                         return MLX5_FENCE_MODE_SMALL_AND_FENCE;
3734                 else
3735                         return fence;
3736         } else if (unlikely(wr->send_flags & IB_SEND_FENCE)) {
3737                 return MLX5_FENCE_MODE_FENCE;
3738         }
3739
3740         return 0;
3741 }
3742
3743 static int begin_wqe(struct mlx5_ib_qp *qp, void **seg,
3744                      struct mlx5_wqe_ctrl_seg **ctrl,
3745                      struct ib_send_wr *wr, unsigned *idx,
3746                      int *size, int nreq)
3747 {
3748         if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq)))
3749                 return -ENOMEM;
3750
3751         *idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1);
3752         *seg = mlx5_get_send_wqe(qp, *idx);
3753         *ctrl = *seg;
3754         *(uint32_t *)(*seg + 8) = 0;
3755         (*ctrl)->imm = send_ieth(wr);
3756         (*ctrl)->fm_ce_se = qp->sq_signal_bits |
3757                 (wr->send_flags & IB_SEND_SIGNALED ?
3758                  MLX5_WQE_CTRL_CQ_UPDATE : 0) |
3759                 (wr->send_flags & IB_SEND_SOLICITED ?
3760                  MLX5_WQE_CTRL_SOLICITED : 0);
3761
3762         *seg += sizeof(**ctrl);
3763         *size = sizeof(**ctrl) / 16;
3764
3765         return 0;
3766 }
3767
3768 static void finish_wqe(struct mlx5_ib_qp *qp,
3769                        struct mlx5_wqe_ctrl_seg *ctrl,
3770                        u8 size, unsigned idx, u64 wr_id,
3771                        int nreq, u8 fence, u8 next_fence,
3772                        u32 mlx5_opcode)
3773 {
3774         u8 opmod = 0;
3775
3776         ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) |
3777                                              mlx5_opcode | ((u32)opmod << 24));
3778         ctrl->qpn_ds = cpu_to_be32(size | (qp->trans_qp.base.mqp.qpn << 8));
3779         ctrl->fm_ce_se |= fence;
3780         qp->fm_cache = next_fence;
3781         if (unlikely(qp->wq_sig))
3782                 ctrl->signature = wq_sig(ctrl);
3783
3784         qp->sq.wrid[idx] = wr_id;
3785         qp->sq.w_list[idx].opcode = mlx5_opcode;
3786         qp->sq.wqe_head[idx] = qp->sq.head + nreq;
3787         qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB);
3788         qp->sq.w_list[idx].next = qp->sq.cur_post;
3789 }
3790
3791
3792 int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
3793                       struct ib_send_wr **bad_wr)
3794 {
3795         struct mlx5_wqe_ctrl_seg *ctrl = NULL;  /* compiler warning */
3796         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
3797         struct mlx5_core_dev *mdev = dev->mdev;
3798         struct mlx5_ib_qp *qp;
3799         struct mlx5_ib_mr *mr;
3800         struct mlx5_wqe_data_seg *dpseg;
3801         struct mlx5_wqe_xrc_seg *xrc;
3802         struct mlx5_bf *bf;
3803         int uninitialized_var(size);
3804         void *qend;
3805         unsigned long flags;
3806         unsigned idx;
3807         int err = 0;
3808         int inl = 0;
3809         int num_sge;
3810         void *seg;
3811         int nreq;
3812         int i;
3813         u8 next_fence = 0;
3814         u8 fence;
3815
3816         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
3817                 return mlx5_ib_gsi_post_send(ibqp, wr, bad_wr);
3818
3819         qp = to_mqp(ibqp);
3820         bf = qp->bf;
3821         qend = qp->sq.qend;
3822
3823         spin_lock_irqsave(&qp->sq.lock, flags);
3824
3825         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
3826                 err = -EIO;
3827                 *bad_wr = wr;
3828                 nreq = 0;
3829                 goto out;
3830         }
3831
3832         for (nreq = 0; wr; nreq++, wr = wr->next) {
3833                 if (unlikely(wr->opcode >= ARRAY_SIZE(mlx5_ib_opcode))) {
3834                         mlx5_ib_warn(dev, "\n");
3835                         err = -EINVAL;
3836                         *bad_wr = wr;
3837                         goto out;
3838                 }
3839
3840                 fence = qp->fm_cache;
3841                 num_sge = wr->num_sge;
3842                 if (unlikely(num_sge > qp->sq.max_gs)) {
3843                         mlx5_ib_warn(dev, "\n");
3844                         err = -EINVAL;
3845                         *bad_wr = wr;
3846                         goto out;
3847                 }
3848
3849                 err = begin_wqe(qp, &seg, &ctrl, wr, &idx, &size, nreq);
3850                 if (err) {
3851                         mlx5_ib_warn(dev, "\n");
3852                         err = -ENOMEM;
3853                         *bad_wr = wr;
3854                         goto out;
3855                 }
3856
3857                 switch (ibqp->qp_type) {
3858                 case IB_QPT_XRC_INI:
3859                         xrc = seg;
3860                         seg += sizeof(*xrc);
3861                         size += sizeof(*xrc) / 16;
3862                         /* fall through */
3863                 case IB_QPT_RC:
3864                         switch (wr->opcode) {
3865                         case IB_WR_RDMA_READ:
3866                         case IB_WR_RDMA_WRITE:
3867                         case IB_WR_RDMA_WRITE_WITH_IMM:
3868                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
3869                                               rdma_wr(wr)->rkey);
3870                                 seg += sizeof(struct mlx5_wqe_raddr_seg);
3871                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
3872                                 break;
3873
3874                         case IB_WR_ATOMIC_CMP_AND_SWP:
3875                         case IB_WR_ATOMIC_FETCH_AND_ADD:
3876                         case IB_WR_MASKED_ATOMIC_CMP_AND_SWP:
3877                                 mlx5_ib_warn(dev, "Atomic operations are not supported yet\n");
3878                                 err = -ENOSYS;
3879                                 *bad_wr = wr;
3880                                 goto out;
3881
3882                         case IB_WR_LOCAL_INV:
3883                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3884                                 qp->sq.wr_data[idx] = IB_WR_LOCAL_INV;
3885                                 ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey);
3886                                 set_linv_wr(qp, &seg, &size);
3887                                 num_sge = 0;
3888                                 break;
3889
3890                         case IB_WR_REG_MR:
3891                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3892                                 qp->sq.wr_data[idx] = IB_WR_REG_MR;
3893                                 ctrl->imm = cpu_to_be32(reg_wr(wr)->key);
3894                                 err = set_reg_wr(qp, reg_wr(wr), &seg, &size);
3895                                 if (err) {
3896                                         *bad_wr = wr;
3897                                         goto out;
3898                                 }
3899                                 num_sge = 0;
3900                                 break;
3901
3902                         case IB_WR_REG_SIG_MR:
3903                                 qp->sq.wr_data[idx] = IB_WR_REG_SIG_MR;
3904                                 mr = to_mmr(sig_handover_wr(wr)->sig_mr);
3905
3906                                 ctrl->imm = cpu_to_be32(mr->ibmr.rkey);
3907                                 err = set_sig_umr_wr(wr, qp, &seg, &size);
3908                                 if (err) {
3909                                         mlx5_ib_warn(dev, "\n");
3910                                         *bad_wr = wr;
3911                                         goto out;
3912                                 }
3913
3914                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3915                                            nreq, get_fence(fence, wr),
3916                                            next_fence, MLX5_OPCODE_UMR);
3917                                 /*
3918                                  * SET_PSV WQEs are not signaled and solicited
3919                                  * on error
3920                                  */
3921                                 wr->send_flags &= ~IB_SEND_SIGNALED;
3922                                 wr->send_flags |= IB_SEND_SOLICITED;
3923                                 err = begin_wqe(qp, &seg, &ctrl, wr,
3924                                                 &idx, &size, nreq);
3925                                 if (err) {
3926                                         mlx5_ib_warn(dev, "\n");
3927                                         err = -ENOMEM;
3928                                         *bad_wr = wr;
3929                                         goto out;
3930                                 }
3931
3932                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->mem,
3933                                                  mr->sig->psv_memory.psv_idx, &seg,
3934                                                  &size);
3935                                 if (err) {
3936                                         mlx5_ib_warn(dev, "\n");
3937                                         *bad_wr = wr;
3938                                         goto out;
3939                                 }
3940
3941                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3942                                            nreq, get_fence(fence, wr),
3943                                            next_fence, MLX5_OPCODE_SET_PSV);
3944                                 err = begin_wqe(qp, &seg, &ctrl, wr,
3945                                                 &idx, &size, nreq);
3946                                 if (err) {
3947                                         mlx5_ib_warn(dev, "\n");
3948                                         err = -ENOMEM;
3949                                         *bad_wr = wr;
3950                                         goto out;
3951                                 }
3952
3953                                 next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL;
3954                                 err = set_psv_wr(&sig_handover_wr(wr)->sig_attrs->wire,
3955                                                  mr->sig->psv_wire.psv_idx, &seg,
3956                                                  &size);
3957                                 if (err) {
3958                                         mlx5_ib_warn(dev, "\n");
3959                                         *bad_wr = wr;
3960                                         goto out;
3961                                 }
3962
3963                                 finish_wqe(qp, ctrl, size, idx, wr->wr_id,
3964                                            nreq, get_fence(fence, wr),
3965                                            next_fence, MLX5_OPCODE_SET_PSV);
3966                                 num_sge = 0;
3967                                 goto skip_psv;
3968
3969                         default:
3970                                 break;
3971                         }
3972                         break;
3973
3974                 case IB_QPT_UC:
3975                         switch (wr->opcode) {
3976                         case IB_WR_RDMA_WRITE:
3977                         case IB_WR_RDMA_WRITE_WITH_IMM:
3978                                 set_raddr_seg(seg, rdma_wr(wr)->remote_addr,
3979                                               rdma_wr(wr)->rkey);
3980                                 seg  += sizeof(struct mlx5_wqe_raddr_seg);
3981                                 size += sizeof(struct mlx5_wqe_raddr_seg) / 16;
3982                                 break;
3983
3984                         default:
3985                                 break;
3986                         }
3987                         break;
3988
3989                 case IB_QPT_SMI:
3990                 case MLX5_IB_QPT_HW_GSI:
3991                         set_datagram_seg(seg, wr);
3992                         seg += sizeof(struct mlx5_wqe_datagram_seg);
3993                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
3994                         if (unlikely((seg == qend)))
3995                                 seg = mlx5_get_send_wqe(qp, 0);
3996                         break;
3997                 case IB_QPT_UD:
3998                         set_datagram_seg(seg, wr);
3999                         seg += sizeof(struct mlx5_wqe_datagram_seg);
4000                         size += sizeof(struct mlx5_wqe_datagram_seg) / 16;
4001
4002                         if (unlikely((seg == qend)))
4003                                 seg = mlx5_get_send_wqe(qp, 0);
4004
4005                         /* handle qp that supports ud offload */
4006                         if (qp->flags & IB_QP_CREATE_IPOIB_UD_LSO) {
4007                                 struct mlx5_wqe_eth_pad *pad;
4008
4009                                 pad = seg;
4010                                 memset(pad, 0, sizeof(struct mlx5_wqe_eth_pad));
4011                                 seg += sizeof(struct mlx5_wqe_eth_pad);
4012                                 size += sizeof(struct mlx5_wqe_eth_pad) / 16;
4013
4014                                 seg = set_eth_seg(seg, wr, qend, qp, &size);
4015
4016                                 if (unlikely((seg == qend)))
4017                                         seg = mlx5_get_send_wqe(qp, 0);
4018                         }
4019                         break;
4020                 case MLX5_IB_QPT_REG_UMR:
4021                         if (wr->opcode != MLX5_IB_WR_UMR) {
4022                                 err = -EINVAL;
4023                                 mlx5_ib_warn(dev, "bad opcode\n");
4024                                 goto out;
4025                         }
4026                         qp->sq.wr_data[idx] = MLX5_IB_WR_UMR;
4027                         ctrl->imm = cpu_to_be32(umr_wr(wr)->mkey);
4028                         set_reg_umr_segment(seg, wr);
4029                         seg += sizeof(struct mlx5_wqe_umr_ctrl_seg);
4030                         size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16;
4031                         if (unlikely((seg == qend)))
4032                                 seg = mlx5_get_send_wqe(qp, 0);
4033                         set_reg_mkey_segment(seg, wr);
4034                         seg += sizeof(struct mlx5_mkey_seg);
4035                         size += sizeof(struct mlx5_mkey_seg) / 16;
4036                         if (unlikely((seg == qend)))
4037                                 seg = mlx5_get_send_wqe(qp, 0);
4038                         break;
4039
4040                 default:
4041                         break;
4042                 }
4043
4044                 if (wr->send_flags & IB_SEND_INLINE && num_sge) {
4045                         int uninitialized_var(sz);
4046
4047                         err = set_data_inl_seg(qp, wr, seg, &sz);
4048                         if (unlikely(err)) {
4049                                 mlx5_ib_warn(dev, "\n");
4050                                 *bad_wr = wr;
4051                                 goto out;
4052                         }
4053                         inl = 1;
4054                         size += sz;
4055                 } else {
4056                         dpseg = seg;
4057                         for (i = 0; i < num_sge; i++) {
4058                                 if (unlikely(dpseg == qend)) {
4059                                         seg = mlx5_get_send_wqe(qp, 0);
4060                                         dpseg = seg;
4061                                 }
4062                                 if (likely(wr->sg_list[i].length)) {
4063                                         set_data_ptr_seg(dpseg, wr->sg_list + i);
4064                                         size += sizeof(struct mlx5_wqe_data_seg) / 16;
4065                                         dpseg++;
4066                                 }
4067                         }
4068                 }
4069
4070                 finish_wqe(qp, ctrl, size, idx, wr->wr_id, nreq,
4071                            get_fence(fence, wr), next_fence,
4072                            mlx5_ib_opcode[wr->opcode]);
4073 skip_psv:
4074                 if (0)
4075                         dump_wqe(qp, idx, size);
4076         }
4077
4078 out:
4079         if (likely(nreq)) {
4080                 qp->sq.head += nreq;
4081
4082                 /* Make sure that descriptors are written before
4083                  * updating doorbell record and ringing the doorbell
4084                  */
4085                 wmb();
4086
4087                 qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post);
4088
4089                 /* Make sure doorbell record is visible to the HCA before
4090                  * we hit doorbell */
4091                 wmb();
4092
4093                 if (bf->need_lock)
4094                         spin_lock(&bf->lock);
4095                 else
4096                         __acquire(&bf->lock);
4097
4098                 /* TBD enable WC */
4099                 if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) {
4100                         mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp);
4101                         /* wc_wmb(); */
4102                 } else {
4103                         mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset,
4104                                      MLX5_GET_DOORBELL_LOCK(&bf->lock32));
4105                         /* Make sure doorbells don't leak out of SQ spinlock
4106                          * and reach the HCA out of order.
4107                          */
4108                         mmiowb();
4109                 }
4110                 bf->offset ^= bf->buf_size;
4111                 if (bf->need_lock)
4112                         spin_unlock(&bf->lock);
4113                 else
4114                         __release(&bf->lock);
4115         }
4116
4117         spin_unlock_irqrestore(&qp->sq.lock, flags);
4118
4119         return err;
4120 }
4121
4122 static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size)
4123 {
4124         sig->signature = calc_sig(sig, size);
4125 }
4126
4127 int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
4128                       struct ib_recv_wr **bad_wr)
4129 {
4130         struct mlx5_ib_qp *qp = to_mqp(ibqp);
4131         struct mlx5_wqe_data_seg *scat;
4132         struct mlx5_rwqe_sig *sig;
4133         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4134         struct mlx5_core_dev *mdev = dev->mdev;
4135         unsigned long flags;
4136         int err = 0;
4137         int nreq;
4138         int ind;
4139         int i;
4140
4141         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4142                 return mlx5_ib_gsi_post_recv(ibqp, wr, bad_wr);
4143
4144         spin_lock_irqsave(&qp->rq.lock, flags);
4145
4146         if (mdev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
4147                 err = -EIO;
4148                 *bad_wr = wr;
4149                 nreq = 0;
4150                 goto out;
4151         }
4152
4153         ind = qp->rq.head & (qp->rq.wqe_cnt - 1);
4154
4155         for (nreq = 0; wr; nreq++, wr = wr->next) {
4156                 if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) {
4157                         err = -ENOMEM;
4158                         *bad_wr = wr;
4159                         goto out;
4160                 }
4161
4162                 if (unlikely(wr->num_sge > qp->rq.max_gs)) {
4163                         err = -EINVAL;
4164                         *bad_wr = wr;
4165                         goto out;
4166                 }
4167
4168                 scat = get_recv_wqe(qp, ind);
4169                 if (qp->wq_sig)
4170                         scat++;
4171
4172                 for (i = 0; i < wr->num_sge; i++)
4173                         set_data_ptr_seg(scat + i, wr->sg_list + i);
4174
4175                 if (i < qp->rq.max_gs) {
4176                         scat[i].byte_count = 0;
4177                         scat[i].lkey       = cpu_to_be32(MLX5_INVALID_LKEY);
4178                         scat[i].addr       = 0;
4179                 }
4180
4181                 if (qp->wq_sig) {
4182                         sig = (struct mlx5_rwqe_sig *)scat;
4183                         set_sig_seg(sig, (qp->rq.max_gs + 1) << 2);
4184                 }
4185
4186                 qp->rq.wrid[ind] = wr->wr_id;
4187
4188                 ind = (ind + 1) & (qp->rq.wqe_cnt - 1);
4189         }
4190
4191 out:
4192         if (likely(nreq)) {
4193                 qp->rq.head += nreq;
4194
4195                 /* Make sure that descriptors are written before
4196                  * doorbell record.
4197                  */
4198                 wmb();
4199
4200                 *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff);
4201         }
4202
4203         spin_unlock_irqrestore(&qp->rq.lock, flags);
4204
4205         return err;
4206 }
4207
4208 static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state)
4209 {
4210         switch (mlx5_state) {
4211         case MLX5_QP_STATE_RST:      return IB_QPS_RESET;
4212         case MLX5_QP_STATE_INIT:     return IB_QPS_INIT;
4213         case MLX5_QP_STATE_RTR:      return IB_QPS_RTR;
4214         case MLX5_QP_STATE_RTS:      return IB_QPS_RTS;
4215         case MLX5_QP_STATE_SQ_DRAINING:
4216         case MLX5_QP_STATE_SQD:      return IB_QPS_SQD;
4217         case MLX5_QP_STATE_SQER:     return IB_QPS_SQE;
4218         case MLX5_QP_STATE_ERR:      return IB_QPS_ERR;
4219         default:                     return -1;
4220         }
4221 }
4222
4223 static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state)
4224 {
4225         switch (mlx5_mig_state) {
4226         case MLX5_QP_PM_ARMED:          return IB_MIG_ARMED;
4227         case MLX5_QP_PM_REARM:          return IB_MIG_REARM;
4228         case MLX5_QP_PM_MIGRATED:       return IB_MIG_MIGRATED;
4229         default: return -1;
4230         }
4231 }
4232
4233 static int to_ib_qp_access_flags(int mlx5_flags)
4234 {
4235         int ib_flags = 0;
4236
4237         if (mlx5_flags & MLX5_QP_BIT_RRE)
4238                 ib_flags |= IB_ACCESS_REMOTE_READ;
4239         if (mlx5_flags & MLX5_QP_BIT_RWE)
4240                 ib_flags |= IB_ACCESS_REMOTE_WRITE;
4241         if (mlx5_flags & MLX5_QP_BIT_RAE)
4242                 ib_flags |= IB_ACCESS_REMOTE_ATOMIC;
4243
4244         return ib_flags;
4245 }
4246
4247 static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr,
4248                                 struct mlx5_qp_path *path)
4249 {
4250         struct mlx5_core_dev *dev = ibdev->mdev;
4251
4252         memset(ib_ah_attr, 0, sizeof(*ib_ah_attr));
4253         ib_ah_attr->port_num      = path->port;
4254
4255         if (ib_ah_attr->port_num == 0 ||
4256             ib_ah_attr->port_num > MLX5_CAP_GEN(dev, num_ports))
4257                 return;
4258
4259         ib_ah_attr->sl = path->dci_cfi_prio_sl & 0xf;
4260
4261         ib_ah_attr->dlid          = be16_to_cpu(path->rlid);
4262         ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f;
4263         ib_ah_attr->static_rate   = path->static_rate ? path->static_rate - 5 : 0;
4264         ib_ah_attr->ah_flags      = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0;
4265         if (ib_ah_attr->ah_flags) {
4266                 ib_ah_attr->grh.sgid_index = path->mgid_index;
4267                 ib_ah_attr->grh.hop_limit  = path->hop_limit;
4268                 ib_ah_attr->grh.traffic_class =
4269                         (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff;
4270                 ib_ah_attr->grh.flow_label =
4271                         be32_to_cpu(path->tclass_flowlabel) & 0xfffff;
4272                 memcpy(ib_ah_attr->grh.dgid.raw,
4273                        path->rgid, sizeof(ib_ah_attr->grh.dgid.raw));
4274         }
4275 }
4276
4277 static int query_raw_packet_qp_sq_state(struct mlx5_ib_dev *dev,
4278                                         struct mlx5_ib_sq *sq,
4279                                         u8 *sq_state)
4280 {
4281         void *out;
4282         void *sqc;
4283         int inlen;
4284         int err;
4285
4286         inlen = MLX5_ST_SZ_BYTES(query_sq_out);
4287         out = mlx5_vzalloc(inlen);
4288         if (!out)
4289                 return -ENOMEM;
4290
4291         err = mlx5_core_query_sq(dev->mdev, sq->base.mqp.qpn, out);
4292         if (err)
4293                 goto out;
4294
4295         sqc = MLX5_ADDR_OF(query_sq_out, out, sq_context);
4296         *sq_state = MLX5_GET(sqc, sqc, state);
4297         sq->state = *sq_state;
4298
4299 out:
4300         kvfree(out);
4301         return err;
4302 }
4303
4304 static int query_raw_packet_qp_rq_state(struct mlx5_ib_dev *dev,
4305                                         struct mlx5_ib_rq *rq,
4306                                         u8 *rq_state)
4307 {
4308         void *out;
4309         void *rqc;
4310         int inlen;
4311         int err;
4312
4313         inlen = MLX5_ST_SZ_BYTES(query_rq_out);
4314         out = mlx5_vzalloc(inlen);
4315         if (!out)
4316                 return -ENOMEM;
4317
4318         err = mlx5_core_query_rq(dev->mdev, rq->base.mqp.qpn, out);
4319         if (err)
4320                 goto out;
4321
4322         rqc = MLX5_ADDR_OF(query_rq_out, out, rq_context);
4323         *rq_state = MLX5_GET(rqc, rqc, state);
4324         rq->state = *rq_state;
4325
4326 out:
4327         kvfree(out);
4328         return err;
4329 }
4330
4331 static int sqrq_state_to_qp_state(u8 sq_state, u8 rq_state,
4332                                   struct mlx5_ib_qp *qp, u8 *qp_state)
4333 {
4334         static const u8 sqrq_trans[MLX5_RQ_NUM_STATE][MLX5_SQ_NUM_STATE] = {
4335                 [MLX5_RQC_STATE_RST] = {
4336                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4337                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4338                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE_BAD,
4339                         [MLX5_SQ_STATE_NA]      = IB_QPS_RESET,
4340                 },
4341                 [MLX5_RQC_STATE_RDY] = {
4342                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4343                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4344                         [MLX5_SQC_STATE_ERR]    = IB_QPS_SQE,
4345                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE,
4346                 },
4347                 [MLX5_RQC_STATE_ERR] = {
4348                         [MLX5_SQC_STATE_RST]    = MLX5_QP_STATE_BAD,
4349                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE_BAD,
4350                         [MLX5_SQC_STATE_ERR]    = IB_QPS_ERR,
4351                         [MLX5_SQ_STATE_NA]      = IB_QPS_ERR,
4352                 },
4353                 [MLX5_RQ_STATE_NA] = {
4354                         [MLX5_SQC_STATE_RST]    = IB_QPS_RESET,
4355                         [MLX5_SQC_STATE_RDY]    = MLX5_QP_STATE,
4356                         [MLX5_SQC_STATE_ERR]    = MLX5_QP_STATE,
4357                         [MLX5_SQ_STATE_NA]      = MLX5_QP_STATE_BAD,
4358                 },
4359         };
4360
4361         *qp_state = sqrq_trans[rq_state][sq_state];
4362
4363         if (*qp_state == MLX5_QP_STATE_BAD) {
4364                 WARN(1, "Buggy Raw Packet QP state, SQ 0x%x state: 0x%x, RQ 0x%x state: 0x%x",
4365                      qp->raw_packet_qp.sq.base.mqp.qpn, sq_state,
4366                      qp->raw_packet_qp.rq.base.mqp.qpn, rq_state);
4367                 return -EINVAL;
4368         }
4369
4370         if (*qp_state == MLX5_QP_STATE)
4371                 *qp_state = qp->state;
4372
4373         return 0;
4374 }
4375
4376 static int query_raw_packet_qp_state(struct mlx5_ib_dev *dev,
4377                                      struct mlx5_ib_qp *qp,
4378                                      u8 *raw_packet_qp_state)
4379 {
4380         struct mlx5_ib_raw_packet_qp *raw_packet_qp = &qp->raw_packet_qp;
4381         struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
4382         struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
4383         int err;
4384         u8 sq_state = MLX5_SQ_STATE_NA;
4385         u8 rq_state = MLX5_RQ_STATE_NA;
4386
4387         if (qp->sq.wqe_cnt) {
4388                 err = query_raw_packet_qp_sq_state(dev, sq, &sq_state);
4389                 if (err)
4390                         return err;
4391         }
4392
4393         if (qp->rq.wqe_cnt) {
4394                 err = query_raw_packet_qp_rq_state(dev, rq, &rq_state);
4395                 if (err)
4396                         return err;
4397         }
4398
4399         return sqrq_state_to_qp_state(sq_state, rq_state, qp,
4400                                       raw_packet_qp_state);
4401 }
4402
4403 static int query_qp_attr(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp,
4404                          struct ib_qp_attr *qp_attr)
4405 {
4406         int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
4407         struct mlx5_qp_context *context;
4408         int mlx5_state;
4409         u32 *outb;
4410         int err = 0;
4411
4412         outb = kzalloc(outlen, GFP_KERNEL);
4413         if (!outb)
4414                 return -ENOMEM;
4415
4416         err = mlx5_core_qp_query(dev->mdev, &qp->trans_qp.base.mqp, outb,
4417                                  outlen);
4418         if (err)
4419                 goto out;
4420
4421         /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
4422         context = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, outb, qpc);
4423
4424         mlx5_state = be32_to_cpu(context->flags) >> 28;
4425
4426         qp->state                    = to_ib_qp_state(mlx5_state);
4427         qp_attr->path_mtu            = context->mtu_msgmax >> 5;
4428         qp_attr->path_mig_state      =
4429                 to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3);
4430         qp_attr->qkey                = be32_to_cpu(context->qkey);
4431         qp_attr->rq_psn              = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff;
4432         qp_attr->sq_psn              = be32_to_cpu(context->next_send_psn) & 0xffffff;
4433         qp_attr->dest_qp_num         = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff;
4434         qp_attr->qp_access_flags     =
4435                 to_ib_qp_access_flags(be32_to_cpu(context->params2));
4436
4437         if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) {
4438                 to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path);
4439                 to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path);
4440                 qp_attr->alt_pkey_index =
4441                         be16_to_cpu(context->alt_path.pkey_index);
4442                 qp_attr->alt_port_num   = qp_attr->alt_ah_attr.port_num;
4443         }
4444
4445         qp_attr->pkey_index = be16_to_cpu(context->pri_path.pkey_index);
4446         qp_attr->port_num = context->pri_path.port;
4447
4448         /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
4449         qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING;
4450
4451         qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7);
4452
4453         qp_attr->max_dest_rd_atomic =
4454                 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7);
4455         qp_attr->min_rnr_timer      =
4456                 (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f;
4457         qp_attr->timeout            = context->pri_path.ackto_lt >> 3;
4458         qp_attr->retry_cnt          = (be32_to_cpu(context->params1) >> 16) & 0x7;
4459         qp_attr->rnr_retry          = (be32_to_cpu(context->params1) >> 13) & 0x7;
4460         qp_attr->alt_timeout        = context->alt_path.ackto_lt >> 3;
4461
4462 out:
4463         kfree(outb);
4464         return err;
4465 }
4466
4467 int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
4468                      int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
4469 {
4470         struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
4471         struct mlx5_ib_qp *qp = to_mqp(ibqp);
4472         int err = 0;
4473         u8 raw_packet_qp_state;
4474
4475         if (ibqp->rwq_ind_tbl)
4476                 return -ENOSYS;
4477
4478         if (unlikely(ibqp->qp_type == IB_QPT_GSI))
4479                 return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
4480                                             qp_init_attr);
4481
4482 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
4483         /*
4484          * Wait for any outstanding page faults, in case the user frees memory
4485          * based upon this query's result.
4486          */
4487         flush_workqueue(mlx5_ib_page_fault_wq);
4488 #endif
4489
4490         mutex_lock(&qp->mutex);
4491
4492         if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET) {
4493                 err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
4494                 if (err)
4495                         goto out;
4496                 qp->state = raw_packet_qp_state;
4497                 qp_attr->port_num = 1;
4498         } else {
4499                 err = query_qp_attr(dev, qp, qp_attr);
4500                 if (err)
4501                         goto out;
4502         }
4503
4504         qp_attr->qp_state            = qp->state;
4505         qp_attr->cur_qp_state        = qp_attr->qp_state;
4506         qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
4507         qp_attr->cap.max_recv_sge    = qp->rq.max_gs;
4508
4509         if (!ibqp->uobject) {
4510                 qp_attr->cap.max_send_wr  = qp->sq.max_post;
4511                 qp_attr->cap.max_send_sge = qp->sq.max_gs;
4512                 qp_init_attr->qp_context = ibqp->qp_context;
4513         } else {
4514                 qp_attr->cap.max_send_wr  = 0;
4515                 qp_attr->cap.max_send_sge = 0;
4516         }
4517
4518         qp_init_attr->qp_type = ibqp->qp_type;
4519         qp_init_attr->recv_cq = ibqp->recv_cq;
4520         qp_init_attr->send_cq = ibqp->send_cq;
4521         qp_init_attr->srq = ibqp->srq;
4522         qp_attr->cap.max_inline_data = qp->max_inline_data;
4523
4524         qp_init_attr->cap            = qp_attr->cap;
4525
4526         qp_init_attr->create_flags = 0;
4527         if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
4528                 qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;
4529
4530         if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
4531                 qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
4532         if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
4533                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
4534         if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
4535                 qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
4536         if (qp->flags & MLX5_IB_QP_SQPN_QP1)
4537                 qp_init_attr->create_flags |= mlx5_ib_create_qp_sqpn_qp1();
4538
4539         qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
4540                 IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;
4541
4542 out:
4543         mutex_unlock(&qp->mutex);
4544         return err;
4545 }
4546
4547 struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev,
4548                                           struct ib_ucontext *context,
4549                                           struct ib_udata *udata)
4550 {
4551         struct mlx5_ib_dev *dev = to_mdev(ibdev);
4552         struct mlx5_ib_xrcd *xrcd;
4553         int err;
4554
4555         if (!MLX5_CAP_GEN(dev->mdev, xrc))
4556                 return ERR_PTR(-ENOSYS);
4557
4558         xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL);
4559         if (!xrcd)
4560                 return ERR_PTR(-ENOMEM);
4561
4562         err = mlx5_core_xrcd_alloc(dev->mdev, &xrcd->xrcdn);
4563         if (err) {
4564                 kfree(xrcd);
4565                 return ERR_PTR(-ENOMEM);
4566         }
4567
4568         return &xrcd->ibxrcd;
4569 }
4570
4571 int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd)
4572 {
4573         struct mlx5_ib_dev *dev = to_mdev(xrcd->device);
4574         u32 xrcdn = to_mxrcd(xrcd)->xrcdn;
4575         int err;
4576
4577         err = mlx5_core_xrcd_dealloc(dev->mdev, xrcdn);
4578         if (err) {
4579                 mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn);
4580                 return err;
4581         }
4582
4583         kfree(xrcd);
4584
4585         return 0;
4586 }
4587
4588 static void mlx5_ib_wq_event(struct mlx5_core_qp *core_qp, int type)
4589 {
4590         struct mlx5_ib_rwq *rwq = to_mibrwq(core_qp);
4591         struct mlx5_ib_dev *dev = to_mdev(rwq->ibwq.device);
4592         struct ib_event event;
4593
4594         if (rwq->ibwq.event_handler) {
4595                 event.device     = rwq->ibwq.device;
4596                 event.element.wq = &rwq->ibwq;
4597                 switch (type) {
4598                 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
4599                         event.event = IB_EVENT_WQ_FATAL;
4600                         break;
4601                 default:
4602                         mlx5_ib_warn(dev, "Unexpected event type %d on WQ %06x\n", type, core_qp->qpn);
4603                         return;
4604                 }
4605
4606                 rwq->ibwq.event_handler(&event, rwq->ibwq.wq_context);
4607         }
4608 }
4609
4610 static int  create_rq(struct mlx5_ib_rwq *rwq, struct ib_pd *pd,
4611                       struct ib_wq_init_attr *init_attr)
4612 {
4613         struct mlx5_ib_dev *dev;
4614         __be64 *rq_pas0;
4615         void *in;
4616         void *rqc;
4617         void *wq;
4618         int inlen;
4619         int err;
4620
4621         dev = to_mdev(pd->device);
4622
4623         inlen = MLX5_ST_SZ_BYTES(create_rq_in) + sizeof(u64) * rwq->rq_num_pas;
4624         in = mlx5_vzalloc(inlen);
4625         if (!in)
4626                 return -ENOMEM;
4627
4628         rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
4629         MLX5_SET(rqc,  rqc, mem_rq_type,
4630                  MLX5_RQC_MEM_RQ_TYPE_MEMORY_RQ_INLINE);
4631         MLX5_SET(rqc, rqc, user_index, rwq->user_index);
4632         MLX5_SET(rqc,  rqc, cqn, to_mcq(init_attr->cq)->mcq.cqn);
4633         MLX5_SET(rqc,  rqc, state, MLX5_RQC_STATE_RST);
4634         MLX5_SET(rqc,  rqc, flush_in_error_en, 1);
4635         wq = MLX5_ADDR_OF(rqc, rqc, wq);
4636         MLX5_SET(wq, wq, wq_type, MLX5_WQ_TYPE_CYCLIC);
4637         MLX5_SET(wq, wq, end_padding_mode, MLX5_WQ_END_PAD_MODE_ALIGN);
4638         MLX5_SET(wq, wq, log_wq_stride, rwq->log_rq_stride);
4639         MLX5_SET(wq, wq, log_wq_sz, rwq->log_rq_size);
4640         MLX5_SET(wq, wq, pd, to_mpd(pd)->pdn);
4641         MLX5_SET(wq, wq, page_offset, rwq->rq_page_offset);
4642         MLX5_SET(wq, wq, log_wq_pg_sz, rwq->log_page_size);
4643         MLX5_SET(wq, wq, wq_signature, rwq->wq_sig);
4644         MLX5_SET64(wq, wq, dbr_addr, rwq->db.dma);
4645         rq_pas0 = (__be64 *)MLX5_ADDR_OF(wq, wq, pas);
4646         mlx5_ib_populate_pas(dev, rwq->umem, rwq->page_shift, rq_pas0, 0);
4647         err = mlx5_core_create_rq_tracked(dev->mdev, in, inlen, &rwq->core_qp);
4648         kvfree(in);
4649         return err;
4650 }
4651
4652 static int set_user_rq_size(struct mlx5_ib_dev *dev,
4653                             struct ib_wq_init_attr *wq_init_attr,
4654                             struct mlx5_ib_create_wq *ucmd,
4655                             struct mlx5_ib_rwq *rwq)
4656 {
4657         /* Sanity check RQ size before proceeding */
4658         if (wq_init_attr->max_wr > (1 << MLX5_CAP_GEN(dev->mdev, log_max_wq_sz)))
4659                 return -EINVAL;
4660
4661         if (!ucmd->rq_wqe_count)
4662                 return -EINVAL;
4663
4664         rwq->wqe_count = ucmd->rq_wqe_count;
4665         rwq->wqe_shift = ucmd->rq_wqe_shift;
4666         rwq->buf_size = (rwq->wqe_count << rwq->wqe_shift);
4667         rwq->log_rq_stride = rwq->wqe_shift;
4668         rwq->log_rq_size = ilog2(rwq->wqe_count);
4669         return 0;
4670 }
4671
4672 static int prepare_user_rq(struct ib_pd *pd,
4673                            struct ib_wq_init_attr *init_attr,
4674                            struct ib_udata *udata,
4675                            struct mlx5_ib_rwq *rwq)
4676 {
4677         struct mlx5_ib_dev *dev = to_mdev(pd->device);
4678         struct mlx5_ib_create_wq ucmd = {};
4679         int err;
4680         size_t required_cmd_sz;
4681
4682         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
4683         if (udata->inlen < required_cmd_sz) {
4684                 mlx5_ib_dbg(dev, "invalid inlen\n");
4685                 return -EINVAL;
4686         }
4687
4688         if (udata->inlen > sizeof(ucmd) &&
4689             !ib_is_udata_cleared(udata, sizeof(ucmd),
4690                                  udata->inlen - sizeof(ucmd))) {
4691                 mlx5_ib_dbg(dev, "inlen is not supported\n");
4692                 return -EOPNOTSUPP;
4693         }
4694
4695         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen))) {
4696                 mlx5_ib_dbg(dev, "copy failed\n");
4697                 return -EFAULT;
4698         }
4699
4700         if (ucmd.comp_mask) {
4701                 mlx5_ib_dbg(dev, "invalid comp mask\n");
4702                 return -EOPNOTSUPP;
4703         }
4704
4705         if (ucmd.reserved) {
4706                 mlx5_ib_dbg(dev, "invalid reserved\n");
4707                 return -EOPNOTSUPP;
4708         }
4709
4710         err = set_user_rq_size(dev, init_attr, &ucmd, rwq);
4711         if (err) {
4712                 mlx5_ib_dbg(dev, "err %d\n", err);
4713                 return err;
4714         }
4715
4716         err = create_user_rq(dev, pd, rwq, &ucmd);
4717         if (err) {
4718                 mlx5_ib_dbg(dev, "err %d\n", err);
4719                 if (err)
4720                         return err;
4721         }
4722
4723         rwq->user_index = ucmd.user_index;
4724         return 0;
4725 }
4726
4727 struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd,
4728                                 struct ib_wq_init_attr *init_attr,
4729                                 struct ib_udata *udata)
4730 {
4731         struct mlx5_ib_dev *dev;
4732         struct mlx5_ib_rwq *rwq;
4733         struct mlx5_ib_create_wq_resp resp = {};
4734         size_t min_resp_len;
4735         int err;
4736
4737         if (!udata)
4738                 return ERR_PTR(-ENOSYS);
4739
4740         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
4741         if (udata->outlen && udata->outlen < min_resp_len)
4742                 return ERR_PTR(-EINVAL);
4743
4744         dev = to_mdev(pd->device);
4745         switch (init_attr->wq_type) {
4746         case IB_WQT_RQ:
4747                 rwq = kzalloc(sizeof(*rwq), GFP_KERNEL);
4748                 if (!rwq)
4749                         return ERR_PTR(-ENOMEM);
4750                 err = prepare_user_rq(pd, init_attr, udata, rwq);
4751                 if (err)
4752                         goto err;
4753                 err = create_rq(rwq, pd, init_attr);
4754                 if (err)
4755                         goto err_user_rq;
4756                 break;
4757         default:
4758                 mlx5_ib_dbg(dev, "unsupported wq type %d\n",
4759                             init_attr->wq_type);
4760                 return ERR_PTR(-EINVAL);
4761         }
4762
4763         rwq->ibwq.wq_num = rwq->core_qp.qpn;
4764         rwq->ibwq.state = IB_WQS_RESET;
4765         if (udata->outlen) {
4766                 resp.response_length = offsetof(typeof(resp), response_length) +
4767                                 sizeof(resp.response_length);
4768                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4769                 if (err)
4770                         goto err_copy;
4771         }
4772
4773         rwq->core_qp.event = mlx5_ib_wq_event;
4774         rwq->ibwq.event_handler = init_attr->event_handler;
4775         return &rwq->ibwq;
4776
4777 err_copy:
4778         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
4779 err_user_rq:
4780         destroy_user_rq(pd, rwq);
4781 err:
4782         kfree(rwq);
4783         return ERR_PTR(err);
4784 }
4785
4786 int mlx5_ib_destroy_wq(struct ib_wq *wq)
4787 {
4788         struct mlx5_ib_dev *dev = to_mdev(wq->device);
4789         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
4790
4791         mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp);
4792         destroy_user_rq(wq->pd, rwq);
4793         kfree(rwq);
4794
4795         return 0;
4796 }
4797
4798 struct ib_rwq_ind_table *mlx5_ib_create_rwq_ind_table(struct ib_device *device,
4799                                                       struct ib_rwq_ind_table_init_attr *init_attr,
4800                                                       struct ib_udata *udata)
4801 {
4802         struct mlx5_ib_dev *dev = to_mdev(device);
4803         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl;
4804         int sz = 1 << init_attr->log_ind_tbl_size;
4805         struct mlx5_ib_create_rwq_ind_tbl_resp resp = {};
4806         size_t min_resp_len;
4807         int inlen;
4808         int err;
4809         int i;
4810         u32 *in;
4811         void *rqtc;
4812
4813         if (udata->inlen > 0 &&
4814             !ib_is_udata_cleared(udata, 0,
4815                                  udata->inlen))
4816                 return ERR_PTR(-EOPNOTSUPP);
4817
4818         min_resp_len = offsetof(typeof(resp), reserved) + sizeof(resp.reserved);
4819         if (udata->outlen && udata->outlen < min_resp_len)
4820                 return ERR_PTR(-EINVAL);
4821
4822         rwq_ind_tbl = kzalloc(sizeof(*rwq_ind_tbl), GFP_KERNEL);
4823         if (!rwq_ind_tbl)
4824                 return ERR_PTR(-ENOMEM);
4825
4826         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
4827         in = mlx5_vzalloc(inlen);
4828         if (!in) {
4829                 err = -ENOMEM;
4830                 goto err;
4831         }
4832
4833         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
4834
4835         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
4836         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
4837
4838         for (i = 0; i < sz; i++)
4839                 MLX5_SET(rqtc, rqtc, rq_num[i], init_attr->ind_tbl[i]->wq_num);
4840
4841         err = mlx5_core_create_rqt(dev->mdev, in, inlen, &rwq_ind_tbl->rqtn);
4842         kvfree(in);
4843
4844         if (err)
4845                 goto err;
4846
4847         rwq_ind_tbl->ib_rwq_ind_tbl.ind_tbl_num = rwq_ind_tbl->rqtn;
4848         if (udata->outlen) {
4849                 resp.response_length = offsetof(typeof(resp), response_length) +
4850                                         sizeof(resp.response_length);
4851                 err = ib_copy_to_udata(udata, &resp, resp.response_length);
4852                 if (err)
4853                         goto err_copy;
4854         }
4855
4856         return &rwq_ind_tbl->ib_rwq_ind_tbl;
4857
4858 err_copy:
4859         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
4860 err:
4861         kfree(rwq_ind_tbl);
4862         return ERR_PTR(err);
4863 }
4864
4865 int mlx5_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *ib_rwq_ind_tbl)
4866 {
4867         struct mlx5_ib_rwq_ind_table *rwq_ind_tbl = to_mrwq_ind_table(ib_rwq_ind_tbl);
4868         struct mlx5_ib_dev *dev = to_mdev(ib_rwq_ind_tbl->device);
4869
4870         mlx5_core_destroy_rqt(dev->mdev, rwq_ind_tbl->rqtn);
4871
4872         kfree(rwq_ind_tbl);
4873         return 0;
4874 }
4875
4876 int mlx5_ib_modify_wq(struct ib_wq *wq, struct ib_wq_attr *wq_attr,
4877                       u32 wq_attr_mask, struct ib_udata *udata)
4878 {
4879         struct mlx5_ib_dev *dev = to_mdev(wq->device);
4880         struct mlx5_ib_rwq *rwq = to_mrwq(wq);
4881         struct mlx5_ib_modify_wq ucmd = {};
4882         size_t required_cmd_sz;
4883         int curr_wq_state;
4884         int wq_state;
4885         int inlen;
4886         int err;
4887         void *rqc;
4888         void *in;
4889
4890         required_cmd_sz = offsetof(typeof(ucmd), reserved) + sizeof(ucmd.reserved);
4891         if (udata->inlen < required_cmd_sz)
4892                 return -EINVAL;
4893
4894         if (udata->inlen > sizeof(ucmd) &&
4895             !ib_is_udata_cleared(udata, sizeof(ucmd),
4896                                  udata->inlen - sizeof(ucmd)))
4897                 return -EOPNOTSUPP;
4898
4899         if (ib_copy_from_udata(&ucmd, udata, min(sizeof(ucmd), udata->inlen)))
4900                 return -EFAULT;
4901
4902         if (ucmd.comp_mask || ucmd.reserved)
4903                 return -EOPNOTSUPP;
4904
4905         inlen = MLX5_ST_SZ_BYTES(modify_rq_in);
4906         in = mlx5_vzalloc(inlen);
4907         if (!in)
4908                 return -ENOMEM;
4909
4910         rqc = MLX5_ADDR_OF(modify_rq_in, in, ctx);
4911
4912         curr_wq_state = (wq_attr_mask & IB_WQ_CUR_STATE) ?
4913                 wq_attr->curr_wq_state : wq->state;
4914         wq_state = (wq_attr_mask & IB_WQ_STATE) ?
4915                 wq_attr->wq_state : curr_wq_state;
4916         if (curr_wq_state == IB_WQS_ERR)
4917                 curr_wq_state = MLX5_RQC_STATE_ERR;
4918         if (wq_state == IB_WQS_ERR)
4919                 wq_state = MLX5_RQC_STATE_ERR;
4920         MLX5_SET(modify_rq_in, in, rq_state, curr_wq_state);
4921         MLX5_SET(rqc, rqc, state, wq_state);
4922
4923         err = mlx5_core_modify_rq(dev->mdev, rwq->core_qp.qpn, in, inlen);
4924         kvfree(in);
4925         if (!err)
4926                 rwq->ibwq.state = (wq_state == MLX5_RQC_STATE_ERR) ? IB_WQS_ERR : wq_state;
4927
4928         return err;
4929 }