drivers/infiniband/hw/bnxt_re/qplib_fp.c

   1 /*
   2  * Broadcom NetXtreme-E RoCE driver.
   3  *
   4  * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
   5  * Broadcom refers to Broadcom Limited and/or its subsidiaries.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * BSD license below:
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  *
  17  * 1. Redistributions of source code must retain the above copyright
  18  *    notice, this list of conditions and the following disclaimer.
  19  * 2. Redistributions in binary form must reproduce the above copyright
  20  *    notice, this list of conditions and the following disclaimer in
  21  *    the documentation and/or other materials provided with the
  22  *    distribution.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
  25  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  26  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  27  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
  28  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  29  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  30  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  31  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  32  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  33  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  34  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  35  *
  36  * Description: Fast Path Operators
  37  */
  38
  39 #define dev_fmt(fmt) "QPLIB: " fmt
  40
  41 #include <linux/interrupt.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/sched.h>
  44 #include <linux/slab.h>
  45 #include <linux/pci.h>
  46 #include <linux/delay.h>
  47 #include <linux/prefetch.h>
  48 #include <linux/if_ether.h>
  49 #include <rdma/ib_mad.h>
  50
  51 #include "roce_hsi.h"
  52
  53 #include "qplib_res.h"
  54 #include "qplib_rcfw.h"
  55 #include "qplib_sp.h"
  56 #include "qplib_fp.h"
  57
  58 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
  59
  60 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
  61 {
  62         qp->sq.condition = false;
  63         qp->sq.send_phantom = false;
  64         qp->sq.single = false;
  65 }
  66
  67 /* Flush list */
  68 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
  69 {
  70         struct bnxt_qplib_cq *scq, *rcq;
  71
  72         scq = qp->scq;
  73         rcq = qp->rcq;
  74
  75         if (!qp->sq.flushed) {
  76                 dev_dbg(&scq->hwq.pdev->dev,
  77                         "FP: Adding to SQ Flush list = %p\n", qp);
  78                 bnxt_qplib_cancel_phantom_processing(qp);
  79                 list_add_tail(&qp->sq_flush, &scq->sqf_head);
  80                 qp->sq.flushed = true;
  81         }
  82         if (!qp->srq) {
  83                 if (!qp->rq.flushed) {
  84                         dev_dbg(&rcq->hwq.pdev->dev,
  85                                 "FP: Adding to RQ Flush list = %p\n", qp);
  86                         list_add_tail(&qp->rq_flush, &rcq->rqf_head);
  87                         qp->rq.flushed = true;
  88                 }
  89         }
  90 }
  91
  92 static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp,
  93                                        unsigned long *flags)
  94         __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock)
  95 {
  96         spin_lock_irqsave(&qp->scq->flush_lock, *flags);
  97         if (qp->scq == qp->rcq)
  98                 __acquire(&qp->rcq->flush_lock);
  99         else
 100                 spin_lock(&qp->rcq->flush_lock);
 101 }
 102
 103 static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp,
 104                                        unsigned long *flags)
 105         __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock)
 106 {
 107         if (qp->scq == qp->rcq)
 108                 __release(&qp->rcq->flush_lock);
 109         else
 110                 spin_unlock(&qp->rcq->flush_lock);
 111         spin_unlock_irqrestore(&qp->scq->flush_lock, *flags);
 112 }
 113
 114 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
 115 {
 116         unsigned long flags;
 117
 118         bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
 119         __bnxt_qplib_add_flush_qp(qp);
 120         bnxt_qplib_release_cq_flush_locks(qp, &flags);
 121 }
 122
 123 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
 124 {
 125         if (qp->sq.flushed) {
 126                 qp->sq.flushed = false;
 127                 list_del(&qp->sq_flush);
 128         }
 129         if (!qp->srq) {
 130                 if (qp->rq.flushed) {
 131                         qp->rq.flushed = false;
 132                         list_del(&qp->rq_flush);
 133                 }
 134         }
 135 }
 136
 137 void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp)
 138 {
 139         unsigned long flags;
 140
 141         bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
 142         __clean_cq(qp->scq, (u64)(unsigned long)qp);
 143         qp->sq.hwq.prod = 0;
 144         qp->sq.hwq.cons = 0;
 145         __clean_cq(qp->rcq, (u64)(unsigned long)qp);
 146         qp->rq.hwq.prod = 0;
 147         qp->rq.hwq.cons = 0;
 148
 149         __bnxt_qplib_del_flush_qp(qp);
 150         bnxt_qplib_release_cq_flush_locks(qp, &flags);
 151 }
 152
 153 static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
 154 {
 155         struct bnxt_qplib_nq_work *nq_work =
 156                         container_of(work, struct bnxt_qplib_nq_work, work);
 157
 158         struct bnxt_qplib_cq *cq = nq_work->cq;
 159         struct bnxt_qplib_nq *nq = nq_work->nq;
 160
 161         if (cq && nq) {
 162                 spin_lock_bh(&cq->compl_lock);
 163                 if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
 164                         dev_dbg(&nq->pdev->dev,
 165                                 "%s:Trigger cq  = %p event nq = %p\n",
 166                                 __func__, cq, nq);
 167                         nq->cqn_handler(nq, cq);
 168                 }
 169                 spin_unlock_bh(&cq->compl_lock);
 170         }
 171         kfree(nq_work);
 172 }
 173
 174 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
 175                                        struct bnxt_qplib_qp *qp)
 176 {
 177         struct bnxt_qplib_q *rq = &qp->rq;
 178         struct bnxt_qplib_q *sq = &qp->sq;
 179
 180         if (qp->rq_hdr_buf)
 181                 dma_free_coherent(&res->pdev->dev,
 182                                   rq->max_wqe * qp->rq_hdr_buf_size,
 183                                   qp->rq_hdr_buf, qp->rq_hdr_buf_map);
 184         if (qp->sq_hdr_buf)
 185                 dma_free_coherent(&res->pdev->dev,
 186                                   sq->max_wqe * qp->sq_hdr_buf_size,
 187                                   qp->sq_hdr_buf, qp->sq_hdr_buf_map);
 188         qp->rq_hdr_buf = NULL;
 189         qp->sq_hdr_buf = NULL;
 190         qp->rq_hdr_buf_map = 0;
 191         qp->sq_hdr_buf_map = 0;
 192         qp->sq_hdr_buf_size = 0;
 193         qp->rq_hdr_buf_size = 0;
 194 }
 195
 196 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
 197                                        struct bnxt_qplib_qp *qp)
 198 {
 199         struct bnxt_qplib_q *rq = &qp->rq;
 200         struct bnxt_qplib_q *sq = &qp->sq;
 201         int rc = 0;
 202
 203         if (qp->sq_hdr_buf_size && sq->max_wqe) {
 204                 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
 205                                         sq->max_wqe * qp->sq_hdr_buf_size,
 206                                         &qp->sq_hdr_buf_map, GFP_KERNEL);
 207                 if (!qp->sq_hdr_buf) {
 208                         rc = -ENOMEM;
 209                         dev_err(&res->pdev->dev,
 210                                 "Failed to create sq_hdr_buf\n");
 211                         goto fail;
 212                 }
 213         }
 214
 215         if (qp->rq_hdr_buf_size && rq->max_wqe) {
 216                 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
 217                                                     rq->max_wqe *
 218                                                     qp->rq_hdr_buf_size,
 219                                                     &qp->rq_hdr_buf_map,
 220                                                     GFP_KERNEL);
 221                 if (!qp->rq_hdr_buf) {
 222                         rc = -ENOMEM;
 223                         dev_err(&res->pdev->dev,
 224                                 "Failed to create rq_hdr_buf\n");
 225                         goto fail;
 226                 }
 227         }
 228         return 0;
 229
 230 fail:
 231         bnxt_qplib_free_qp_hdr_buf(res, qp);
 232         return rc;
 233 }
 234
 235 static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq)
 236 {
 237         struct bnxt_qplib_hwq *hwq = &nq->hwq;
 238         struct nq_base *nqe, **nq_ptr;
 239         int budget = nq->budget;
 240         u32 sw_cons, raw_cons;
 241         uintptr_t q_handle;
 242         u16 type;
 243
 244         spin_lock_bh(&hwq->lock);
 245         /* Service the NQ until empty */
 246         raw_cons = hwq->cons;
 247         while (budget--) {
 248                 sw_cons = HWQ_CMP(raw_cons, hwq);
 249                 nq_ptr = (struct nq_base **)hwq->pbl_ptr;
 250                 nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)];
 251                 if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
 252                         break;
 253
 254                 /*
 255                  * The valid test of the entry must be done first before
 256                  * reading any further.
 257                  */
 258                 dma_rmb();
 259
 260                 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
 261                 switch (type) {
 262                 case NQ_BASE_TYPE_CQ_NOTIFICATION:
 263                 {
 264                         struct nq_cn *nqcne = (struct nq_cn *)nqe;
 265
 266                         q_handle = le32_to_cpu(nqcne->cq_handle_low);
 267                         q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
 268                                                      << 32;
 269                         if ((unsigned long)cq == q_handle) {
 270                                 nqcne->cq_handle_low = 0;
 271                                 nqcne->cq_handle_high = 0;
 272                                 cq->cnq_events++;
 273                         }
 274                         break;
 275                 }
 276                 default:
 277                         break;
 278                 }
 279                 raw_cons++;
 280         }
 281         spin_unlock_bh(&hwq->lock);
 282 }
 283
 284 /* Wait for receiving all NQEs for this CQ and clean the NQEs associated with
 285  * this CQ.
 286  */
 287 static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events)
 288 {
 289         u32 retry_cnt = 100;
 290
 291         while (retry_cnt--) {
 292                 if (cnq_events == cq->cnq_events)
 293                         return;
 294                 usleep_range(50, 100);
 295                 clean_nq(cq->nq, cq);
 296         }
 297 }
 298
 299 static void bnxt_qplib_service_nq(struct tasklet_struct *t)
 300 {
 301         struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet);
 302         struct bnxt_qplib_hwq *hwq = &nq->hwq;
 303         struct bnxt_qplib_cq *cq;
 304         int budget = nq->budget;
 305         u32 sw_cons, raw_cons;
 306         struct nq_base *nqe;
 307         uintptr_t q_handle;
 308         u16 type;
 309
 310         spin_lock_bh(&hwq->lock);
 311         /* Service the NQ until empty */
 312         raw_cons = hwq->cons;
 313         while (budget--) {
 314                 sw_cons = HWQ_CMP(raw_cons, hwq);
 315                 nqe = bnxt_qplib_get_qe(hwq, sw_cons, NULL);
 316                 if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
 317                         break;
 318
 319                 /*
 320                  * The valid test of the entry must be done first before
 321                  * reading any further.
 322                  */
 323                 dma_rmb();
 324
 325                 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
 326                 switch (type) {
 327                 case NQ_BASE_TYPE_CQ_NOTIFICATION:
 328                 {
 329                         struct nq_cn *nqcne = (struct nq_cn *)nqe;
 330
 331                         q_handle = le32_to_cpu(nqcne->cq_handle_low);
 332                         q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
 333                                                      << 32;
 334                         cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
 335                         if (!cq)
 336                                 break;
 337                         bnxt_qplib_armen_db(&cq->dbinfo,
 338                                             DBC_DBC_TYPE_CQ_ARMENA);
 339                         spin_lock_bh(&cq->compl_lock);
 340                         atomic_set(&cq->arm_state, 0);
 341                         if (nq->cqn_handler(nq, (cq)))
 342                                 dev_warn(&nq->pdev->dev,
 343                                          "cqn - type 0x%x not handled\n", type);
 344                         cq->cnq_events++;
 345                         spin_unlock_bh(&cq->compl_lock);
 346                         break;
 347                 }
 348                 case NQ_BASE_TYPE_SRQ_EVENT:
 349                 {
 350                         struct bnxt_qplib_srq *srq;
 351                         struct nq_srq_event *nqsrqe =
 352                                                 (struct nq_srq_event *)nqe;
 353
 354                         q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
 355                         q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
 356                                      << 32;
 357                         srq = (struct bnxt_qplib_srq *)q_handle;
 358                         bnxt_qplib_armen_db(&srq->dbinfo,
 359                                             DBC_DBC_TYPE_SRQ_ARMENA);
 360                         if (nq->srqn_handler(nq,
 361                                              (struct bnxt_qplib_srq *)q_handle,
 362                                              nqsrqe->event))
 363                                 dev_warn(&nq->pdev->dev,
 364                                          "SRQ event 0x%x not handled\n",
 365                                          nqsrqe->event);
 366                         break;
 367                 }
 368                 case NQ_BASE_TYPE_DBQ_EVENT:
 369                         break;
 370                 default:
 371                         dev_warn(&nq->pdev->dev,
 372                                  "nqe with type = 0x%x not handled\n", type);
 373                         break;
 374                 }
 375                 raw_cons++;
 376         }
 377         if (hwq->cons != raw_cons) {
 378                 hwq->cons = raw_cons;
 379                 bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
 380         }
 381         spin_unlock_bh(&hwq->lock);
 382 }
 383
 384 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
 385 {
 386         struct bnxt_qplib_nq *nq = dev_instance;
 387         struct bnxt_qplib_hwq *hwq = &nq->hwq;
 388         u32 sw_cons;
 389
 390         /* Prefetch the NQ element */
 391         sw_cons = HWQ_CMP(hwq->cons, hwq);
 392         prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL));
 393
 394         /* Fan out to CPU affinitized kthreads? */
 395         tasklet_schedule(&nq->nq_tasklet);
 396
 397         return IRQ_HANDLED;
 398 }
 399
 400 void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill)
 401 {
 402         tasklet_disable(&nq->nq_tasklet);
 403         /* Mask h/w interrupt */
 404         bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false);
 405         /* Sync with last running IRQ handler */
 406         synchronize_irq(nq->msix_vec);
 407         if (kill)
 408                 tasklet_kill(&nq->nq_tasklet);
 409         if (nq->requested) {
 410                 irq_set_affinity_hint(nq->msix_vec, NULL);
 411                 free_irq(nq->msix_vec, nq);
 412                 nq->requested = false;
 413         }
 414 }
 415
 416 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
 417 {
 418         if (nq->cqn_wq) {
 419                 destroy_workqueue(nq->cqn_wq);
 420                 nq->cqn_wq = NULL;
 421         }
 422
 423         /* Make sure the HW is stopped! */
 424         bnxt_qplib_nq_stop_irq(nq, true);
 425
 426         if (nq->nq_db.reg.bar_reg) {
 427                 iounmap(nq->nq_db.reg.bar_reg);
 428                 nq->nq_db.reg.bar_reg = NULL;
 429         }
 430
 431         nq->cqn_handler = NULL;
 432         nq->srqn_handler = NULL;
 433         nq->msix_vec = 0;
 434 }
 435
 436 int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
 437                             int msix_vector, bool need_init)
 438 {
 439         int rc;
 440
 441         if (nq->requested)
 442                 return -EFAULT;
 443
 444         nq->msix_vec = msix_vector;
 445         if (need_init)
 446                 tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq);
 447         else
 448                 tasklet_enable(&nq->nq_tasklet);
 449
 450         snprintf(nq->name, sizeof(nq->name), "bnxt_qplib_nq-%d", nq_indx);
 451         rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq);
 452         if (rc)
 453                 return rc;
 454
 455         cpumask_clear(&nq->mask);
 456         cpumask_set_cpu(nq_indx, &nq->mask);
 457         rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask);
 458         if (rc) {
 459                 dev_warn(&nq->pdev->dev,
 460                          "set affinity failed; vector: %d nq_idx: %d\n",
 461                          nq->msix_vec, nq_indx);
 462         }
 463         nq->requested = true;
 464         bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
 465
 466         return rc;
 467 }
 468
 469 static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq,  u32 reg_offt)
 470 {
 471         resource_size_t reg_base;
 472         struct bnxt_qplib_nq_db *nq_db;
 473         struct pci_dev *pdev;
 474         int rc = 0;
 475
 476         pdev = nq->pdev;
 477         nq_db = &nq->nq_db;
 478
 479         nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION;
 480         nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id);
 481         if (!nq_db->reg.bar_base) {
 482                 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!",
 483                         nq_db->reg.bar_id);
 484                 rc = -ENOMEM;
 485                 goto fail;
 486         }
 487
 488         reg_base = nq_db->reg.bar_base + reg_offt;
 489         /* Unconditionally map 8 bytes to support 57500 series */
 490         nq_db->reg.len = 8;
 491         nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len);
 492         if (!nq_db->reg.bar_reg) {
 493                 dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed",
 494                         nq_db->reg.bar_id);
 495                 rc = -ENOMEM;
 496                 goto fail;
 497         }
 498
 499         nq_db->dbinfo.db = nq_db->reg.bar_reg;
 500         nq_db->dbinfo.hwq = &nq->hwq;
 501         nq_db->dbinfo.xid = nq->ring_id;
 502 fail:
 503         return rc;
 504 }
 505
 506 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
 507                          int nq_idx, int msix_vector, int bar_reg_offset,
 508                          cqn_handler_t cqn_handler,
 509                          srqn_handler_t srqn_handler)
 510 {
 511         int rc = -1;
 512
 513         nq->pdev = pdev;
 514         nq->cqn_handler = cqn_handler;
 515         nq->srqn_handler = srqn_handler;
 516
 517         /* Have a task to schedule CQ notifiers in post send case */
 518         nq->cqn_wq  = create_singlethread_workqueue("bnxt_qplib_nq");
 519         if (!nq->cqn_wq)
 520                 return -ENOMEM;
 521
 522         rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset);
 523         if (rc)
 524                 goto fail;
 525
 526         rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true);
 527         if (rc) {
 528                 dev_err(&nq->pdev->dev,
 529                         "Failed to request irq for nq-idx %d\n", nq_idx);
 530                 goto fail;
 531         }
 532
 533         return 0;
 534 fail:
 535         bnxt_qplib_disable_nq(nq);
 536         return rc;
 537 }
 538
 539 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
 540 {
 541         if (nq->hwq.max_elements) {
 542                 bnxt_qplib_free_hwq(nq->res, &nq->hwq);
 543                 nq->hwq.max_elements = 0;
 544         }
 545 }
 546
 547 int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq)
 548 {
 549         struct bnxt_qplib_hwq_attr hwq_attr = {};
 550         struct bnxt_qplib_sg_info sginfo = {};
 551
 552         nq->pdev = res->pdev;
 553         nq->res = res;
 554         if (!nq->hwq.max_elements ||
 555             nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
 556                 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
 557
 558         sginfo.pgsize = PAGE_SIZE;
 559         sginfo.pgshft = PAGE_SHIFT;
 560         hwq_attr.res = res;
 561         hwq_attr.sginfo = &sginfo;
 562         hwq_attr.depth = nq->hwq.max_elements;
 563         hwq_attr.stride = sizeof(struct nq_base);
 564         hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res);
 565         if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) {
 566                 dev_err(&nq->pdev->dev, "FP NQ allocation failed");
 567                 return -ENOMEM;
 568         }
 569         nq->budget = 8;
 570         return 0;
 571 }
 572
 573 /* SRQ */
 574 void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
 575                            struct bnxt_qplib_srq *srq)
 576 {
 577         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 578         struct creq_destroy_srq_resp resp = {};
 579         struct bnxt_qplib_cmdqmsg msg = {};
 580         struct cmdq_destroy_srq req = {};
 581         int rc;
 582
 583         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
 584                                  CMDQ_BASE_OPCODE_DESTROY_SRQ,
 585                                  sizeof(req));
 586
 587         /* Configure the request */
 588         req.srq_cid = cpu_to_le32(srq->id);
 589
 590         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
 591         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
 592         kfree(srq->swq);
 593         if (rc)
 594                 return;
 595         bnxt_qplib_free_hwq(res, &srq->hwq);
 596 }
 597
 598 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
 599                           struct bnxt_qplib_srq *srq)
 600 {
 601         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 602         struct bnxt_qplib_hwq_attr hwq_attr = {};
 603         struct creq_create_srq_resp resp = {};
 604         struct bnxt_qplib_cmdqmsg msg = {};
 605         struct cmdq_create_srq req = {};
 606         struct bnxt_qplib_pbl *pbl;
 607         u16 pg_sz_lvl;
 608         int rc, idx;
 609
 610         hwq_attr.res = res;
 611         hwq_attr.sginfo = &srq->sg_info;
 612         hwq_attr.depth = srq->max_wqe;
 613         hwq_attr.stride = srq->wqe_size;
 614         hwq_attr.type = HWQ_TYPE_QUEUE;
 615         rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr);
 616         if (rc)
 617                 goto exit;
 618
 619         srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
 620                            GFP_KERNEL);
 621         if (!srq->swq) {
 622                 rc = -ENOMEM;
 623                 goto fail;
 624         }
 625
 626         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
 627                                  CMDQ_BASE_OPCODE_CREATE_SRQ,
 628                                  sizeof(req));
 629
 630         /* Configure the request */
 631         req.dpi = cpu_to_le32(srq->dpi->dpi);
 632         req.srq_handle = cpu_to_le64((uintptr_t)srq);
 633
 634         req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
 635         pbl = &srq->hwq.pbl[PBL_LVL_0];
 636         pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
 637                      CMDQ_CREATE_SRQ_PG_SIZE_SFT);
 638         pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
 639                       CMDQ_CREATE_SRQ_LVL_SFT;
 640         req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
 641         req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 642         req.pd_id = cpu_to_le32(srq->pd->id);
 643         req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
 644
 645         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
 646         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
 647         if (rc)
 648                 goto fail;
 649
 650         spin_lock_init(&srq->lock);
 651         srq->start_idx = 0;
 652         srq->last_idx = srq->hwq.max_elements - 1;
 653         for (idx = 0; idx < srq->hwq.max_elements; idx++)
 654                 srq->swq[idx].next_idx = idx + 1;
 655         srq->swq[srq->last_idx].next_idx = -1;
 656
 657         srq->id = le32_to_cpu(resp.xid);
 658         srq->dbinfo.hwq = &srq->hwq;
 659         srq->dbinfo.xid = srq->id;
 660         srq->dbinfo.db = srq->dpi->dbr;
 661         srq->dbinfo.max_slot = 1;
 662         srq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem;
 663         if (srq->threshold)
 664                 bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
 665         srq->arm_req = false;
 666
 667         return 0;
 668 fail:
 669         bnxt_qplib_free_hwq(res, &srq->hwq);
 670         kfree(srq->swq);
 671 exit:
 672         return rc;
 673 }
 674
 675 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
 676                           struct bnxt_qplib_srq *srq)
 677 {
 678         struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
 679         u32 sw_prod, sw_cons, count = 0;
 680
 681         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 682         sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);
 683
 684         count = sw_prod > sw_cons ? sw_prod - sw_cons :
 685                                     srq_hwq->max_elements - sw_cons + sw_prod;
 686         if (count > srq->threshold) {
 687                 srq->arm_req = false;
 688                 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
 689         } else {
 690                 /* Deferred arming */
 691                 srq->arm_req = true;
 692         }
 693
 694         return 0;
 695 }
 696
 697 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
 698                          struct bnxt_qplib_srq *srq)
 699 {
 700         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 701         struct creq_query_srq_resp resp = {};
 702         struct bnxt_qplib_cmdqmsg msg = {};
 703         struct bnxt_qplib_rcfw_sbuf *sbuf;
 704         struct creq_query_srq_resp_sb *sb;
 705         struct cmdq_query_srq req = {};
 706         int rc = 0;
 707
 708         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
 709                                  CMDQ_BASE_OPCODE_QUERY_SRQ,
 710                                  sizeof(req));
 711
 712         /* Configure the request */
 713         sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
 714         if (!sbuf)
 715                 return -ENOMEM;
 716         req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
 717         req.srq_cid = cpu_to_le32(srq->id);
 718         sb = sbuf->sb;
 719         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, sbuf, sizeof(req),
 720                                 sizeof(resp), 0);
 721         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
 722         srq->threshold = le16_to_cpu(sb->srq_limit);
 723         bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
 724
 725         return rc;
 726 }
 727
 728 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
 729                              struct bnxt_qplib_swqe *wqe)
 730 {
 731         struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
 732         struct rq_wqe *srqe;
 733         struct sq_sge *hw_sge;
 734         u32 sw_prod, sw_cons, count = 0;
 735         int i, rc = 0, next;
 736
 737         spin_lock(&srq_hwq->lock);
 738         if (srq->start_idx == srq->last_idx) {
 739                 dev_err(&srq_hwq->pdev->dev,
 740                         "FP: SRQ (0x%x) is full!\n", srq->id);
 741                 rc = -EINVAL;
 742                 spin_unlock(&srq_hwq->lock);
 743                 goto done;
 744         }
 745         next = srq->start_idx;
 746         srq->start_idx = srq->swq[next].next_idx;
 747         spin_unlock(&srq_hwq->lock);
 748
 749         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 750         srqe = bnxt_qplib_get_qe(srq_hwq, sw_prod, NULL);
 751         memset(srqe, 0, srq->wqe_size);
 752         /* Calculate wqe_size16 and data_len */
 753         for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
 754              i < wqe->num_sge; i++, hw_sge++) {
 755                 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
 756                 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
 757                 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
 758         }
 759         srqe->wqe_type = wqe->type;
 760         srqe->flags = wqe->flags;
 761         srqe->wqe_size = wqe->num_sge +
 762                         ((offsetof(typeof(*srqe), data) + 15) >> 4);
 763         srqe->wr_id[0] = cpu_to_le32((u32)next);
 764         srq->swq[next].wr_id = wqe->wr_id;
 765
 766         srq_hwq->prod++;
 767
 768         spin_lock(&srq_hwq->lock);
 769         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 770         /* retaining srq_hwq->cons for this logic
 771          * actually the lock is only required to
 772          * read srq_hwq->cons.
 773          */
 774         sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);
 775         count = sw_prod > sw_cons ? sw_prod - sw_cons :
 776                                     srq_hwq->max_elements - sw_cons + sw_prod;
 777         spin_unlock(&srq_hwq->lock);
 778         /* Ring DB */
 779         bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
 780         if (srq->arm_req == true && count > srq->threshold) {
 781                 srq->arm_req = false;
 782                 bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
 783         }
 784 done:
 785         return rc;
 786 }
 787
 788 /* QP */
 789
 790 static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
 791 {
 792         int rc = 0;
 793         int indx;
 794
 795         que->swq = kcalloc(que->max_wqe, sizeof(*que->swq), GFP_KERNEL);
 796         if (!que->swq) {
 797                 rc = -ENOMEM;
 798                 goto out;
 799         }
 800
 801         que->swq_start = 0;
 802         que->swq_last = que->max_wqe - 1;
 803         for (indx = 0; indx < que->max_wqe; indx++)
 804                 que->swq[indx].next_idx = indx + 1;
 805         que->swq[que->swq_last].next_idx = 0; /* Make it circular */
 806         que->swq_last = 0;
 807 out:
 808         return rc;
 809 }
 810
 811 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 812 {
 813         struct bnxt_qplib_hwq_attr hwq_attr = {};
 814         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 815         struct creq_create_qp1_resp resp = {};
 816         struct bnxt_qplib_cmdqmsg msg = {};
 817         struct bnxt_qplib_q *sq = &qp->sq;
 818         struct bnxt_qplib_q *rq = &qp->rq;
 819         struct cmdq_create_qp1 req = {};
 820         struct bnxt_qplib_pbl *pbl;
 821         u32 qp_flags = 0;
 822         u8 pg_sz_lvl;
 823         u32 tbl_indx;
 824         int rc;
 825
 826         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
 827                                  CMDQ_BASE_OPCODE_CREATE_QP1,
 828                                  sizeof(req));
 829         /* General */
 830         req.type = qp->type;
 831         req.dpi = cpu_to_le32(qp->dpi->dpi);
 832         req.qp_handle = cpu_to_le64(qp->qp_handle);
 833
 834         /* SQ */
 835         hwq_attr.res = res;
 836         hwq_attr.sginfo = &sq->sg_info;
 837         hwq_attr.stride = sizeof(struct sq_sge);
 838         hwq_attr.depth = bnxt_qplib_get_depth(sq);
 839         hwq_attr.type = HWQ_TYPE_QUEUE;
 840         rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
 841         if (rc)
 842                 goto exit;
 843
 844         rc = bnxt_qplib_alloc_init_swq(sq);
 845         if (rc)
 846                 goto fail_sq;
 847
 848         req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
 849         pbl = &sq->hwq.pbl[PBL_LVL_0];
 850         req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 851         pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
 852                      CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
 853         pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
 854         req.sq_pg_size_sq_lvl = pg_sz_lvl;
 855         req.sq_fwo_sq_sge =
 856                 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
 857                              CMDQ_CREATE_QP1_SQ_SGE_SFT);
 858         req.scq_cid = cpu_to_le32(qp->scq->id);
 859
 860         /* RQ */
 861         if (rq->max_wqe) {
 862                 hwq_attr.res = res;
 863                 hwq_attr.sginfo = &rq->sg_info;
 864                 hwq_attr.stride = sizeof(struct sq_sge);
 865                 hwq_attr.depth = bnxt_qplib_get_depth(rq);
 866                 hwq_attr.type = HWQ_TYPE_QUEUE;
 867                 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
 868                 if (rc)
 869                         goto sq_swq;
 870                 rc = bnxt_qplib_alloc_init_swq(rq);
 871                 if (rc)
 872                         goto fail_rq;
 873                 req.rq_size = cpu_to_le32(rq->max_wqe);
 874                 pbl = &rq->hwq.pbl[PBL_LVL_0];
 875                 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 876                 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
 877                              CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
 878                 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
 879                 req.rq_pg_size_rq_lvl = pg_sz_lvl;
 880                 req.rq_fwo_rq_sge =
 881                         cpu_to_le16((rq->max_sge &
 882                                      CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
 883                                     CMDQ_CREATE_QP1_RQ_SGE_SFT);
 884         }
 885         req.rcq_cid = cpu_to_le32(qp->rcq->id);
 886         /* Header buffer - allow hdr_buf pass in */
 887         rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
 888         if (rc) {
 889                 rc = -ENOMEM;
 890                 goto rq_rwq;
 891         }
 892         qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
 893         req.qp_flags = cpu_to_le32(qp_flags);
 894         req.pd_id = cpu_to_le32(qp->pd->id);
 895
 896         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req), sizeof(resp), 0);
 897         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
 898         if (rc)
 899                 goto fail;
 900
 901         qp->id = le32_to_cpu(resp.xid);
 902         qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
 903         qp->cctx = res->cctx;
 904         sq->dbinfo.hwq = &sq->hwq;
 905         sq->dbinfo.xid = qp->id;
 906         sq->dbinfo.db = qp->dpi->dbr;
 907         sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
 908         if (rq->max_wqe) {
 909                 rq->dbinfo.hwq = &rq->hwq;
 910                 rq->dbinfo.xid = qp->id;
 911                 rq->dbinfo.db = qp->dpi->dbr;
 912                 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
 913         }
 914         tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
 915         rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
 916         rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
 917
 918         return 0;
 919
 920 fail:
 921         bnxt_qplib_free_qp_hdr_buf(res, qp);
 922 rq_rwq:
 923         kfree(rq->swq);
 924 fail_rq:
 925         bnxt_qplib_free_hwq(res, &rq->hwq);
 926 sq_swq:
 927         kfree(sq->swq);
 928 fail_sq:
 929         bnxt_qplib_free_hwq(res, &sq->hwq);
 930 exit:
 931         return rc;
 932 }
 933
 934 static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
 935 {
 936         struct bnxt_qplib_hwq *hwq;
 937         struct bnxt_qplib_q *sq;
 938         u64 fpsne, psn_pg;
 939         u16 indx_pad = 0;
 940
 941         sq = &qp->sq;
 942         hwq = &sq->hwq;
 943         /* First psn entry */
 944         fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
 945         if (!IS_ALIGNED(fpsne, PAGE_SIZE))
 946                 indx_pad = (fpsne & ~PAGE_MASK) / size;
 947         hwq->pad_pgofft = indx_pad;
 948         hwq->pad_pg = (u64 *)psn_pg;
 949         hwq->pad_stride = size;
 950 }
 951
 952 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 953 {
 954         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 955         struct bnxt_qplib_hwq_attr hwq_attr = {};
 956         struct bnxt_qplib_sg_info sginfo = {};
 957         struct creq_create_qp_resp resp = {};
 958         struct bnxt_qplib_cmdqmsg msg = {};
 959         struct bnxt_qplib_q *sq = &qp->sq;
 960         struct bnxt_qplib_q *rq = &qp->rq;
 961         struct cmdq_create_qp req = {};
 962         int rc, req_size, psn_sz = 0;
 963         struct bnxt_qplib_hwq *xrrq;
 964         struct bnxt_qplib_pbl *pbl;
 965         u32 qp_flags = 0;
 966         u8 pg_sz_lvl;
 967         u32 tbl_indx;
 968         u16 nsge;
 969
 970         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
 971                                  CMDQ_BASE_OPCODE_CREATE_QP,
 972                                  sizeof(req));
 973
 974         /* General */
 975         req.type = qp->type;
 976         req.dpi = cpu_to_le32(qp->dpi->dpi);
 977         req.qp_handle = cpu_to_le64(qp->qp_handle);
 978
 979         /* SQ */
 980         if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
 981                 psn_sz = bnxt_qplib_is_chip_gen_p5(res->cctx) ?
 982                          sizeof(struct sq_psn_search_ext) :
 983                          sizeof(struct sq_psn_search);
 984         }
 985
 986         hwq_attr.res = res;
 987         hwq_attr.sginfo = &sq->sg_info;
 988         hwq_attr.stride = sizeof(struct sq_sge);
 989         hwq_attr.depth = bnxt_qplib_get_depth(sq);
 990         hwq_attr.aux_stride = psn_sz;
 991         hwq_attr.aux_depth = bnxt_qplib_set_sq_size(sq, qp->wqe_mode);
 992         hwq_attr.type = HWQ_TYPE_QUEUE;
 993         rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
 994         if (rc)
 995                 goto exit;
 996
 997         rc = bnxt_qplib_alloc_init_swq(sq);
 998         if (rc)
 999                 goto fail_sq;
1000
1001         if (psn_sz)
1002                 bnxt_qplib_init_psn_ptr(qp, psn_sz);
1003
1004         req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
1005         pbl = &sq->hwq.pbl[PBL_LVL_0];
1006         req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1007         pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
1008                      CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
1009         pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
1010         req.sq_pg_size_sq_lvl = pg_sz_lvl;
1011         req.sq_fwo_sq_sge =
1012                 cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
1013                              CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1014         req.scq_cid = cpu_to_le32(qp->scq->id);
1015
1016         /* RQ */
1017         if (!qp->srq) {
1018                 hwq_attr.res = res;
1019                 hwq_attr.sginfo = &rq->sg_info;
1020                 hwq_attr.stride = sizeof(struct sq_sge);
1021                 hwq_attr.depth = bnxt_qplib_get_depth(rq);
1022                 hwq_attr.aux_stride = 0;
1023                 hwq_attr.aux_depth = 0;
1024                 hwq_attr.type = HWQ_TYPE_QUEUE;
1025                 rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
1026                 if (rc)
1027                         goto sq_swq;
1028                 rc = bnxt_qplib_alloc_init_swq(rq);
1029                 if (rc)
1030                         goto fail_rq;
1031
1032                 req.rq_size = cpu_to_le32(rq->max_wqe);
1033                 pbl = &rq->hwq.pbl[PBL_LVL_0];
1034                 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1035                 pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
1036                              CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
1037                 pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
1038                 req.rq_pg_size_rq_lvl = pg_sz_lvl;
1039                 nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
1040                         6 : rq->max_sge;
1041                 req.rq_fwo_rq_sge =
1042                         cpu_to_le16(((nsge &
1043                                       CMDQ_CREATE_QP_RQ_SGE_MASK) <<
1044                                      CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1045         } else {
1046                 /* SRQ */
1047                 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
1048                 req.srq_cid = cpu_to_le32(qp->srq->id);
1049         }
1050         req.rcq_cid = cpu_to_le32(qp->rcq->id);
1051
1052         qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
1053         qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
1054         if (qp->sig_type)
1055                 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
1056         if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
1057                 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
1058         if (_is_ext_stats_supported(res->dattr->dev_cap_flags) && !res->is_vf)
1059                 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_EXT_STATS_ENABLED;
1060
1061         req.qp_flags = cpu_to_le32(qp_flags);
1062
1063         /* ORRQ and IRRQ */
1064         if (psn_sz) {
1065                 xrrq = &qp->orrq;
1066                 xrrq->max_elements =
1067                         ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1068                 req_size = xrrq->max_elements *
1069                            BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1070                 req_size &= ~(PAGE_SIZE - 1);
1071                 sginfo.pgsize = req_size;
1072                 sginfo.pgshft = PAGE_SHIFT;
1073
1074                 hwq_attr.res = res;
1075                 hwq_attr.sginfo = &sginfo;
1076                 hwq_attr.depth = xrrq->max_elements;
1077                 hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
1078                 hwq_attr.aux_stride = 0;
1079                 hwq_attr.aux_depth = 0;
1080                 hwq_attr.type = HWQ_TYPE_CTX;
1081                 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1082                 if (rc)
1083                         goto rq_swq;
1084                 pbl = &xrrq->pbl[PBL_LVL_0];
1085                 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1086
1087                 xrrq = &qp->irrq;
1088                 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1089                                                 qp->max_dest_rd_atomic);
1090                 req_size = xrrq->max_elements *
1091                            BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1092                 req_size &= ~(PAGE_SIZE - 1);
1093                 sginfo.pgsize = req_size;
1094                 hwq_attr.depth =  xrrq->max_elements;
1095                 hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
1096                 rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
1097                 if (rc)
1098                         goto fail_orrq;
1099
1100                 pbl = &xrrq->pbl[PBL_LVL_0];
1101                 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1102         }
1103         req.pd_id = cpu_to_le32(qp->pd->id);
1104
1105         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1106                                 sizeof(resp), 0);
1107         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1108         if (rc)
1109                 goto fail;
1110
1111         qp->id = le32_to_cpu(resp.xid);
1112         qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1113         INIT_LIST_HEAD(&qp->sq_flush);
1114         INIT_LIST_HEAD(&qp->rq_flush);
1115         qp->cctx = res->cctx;
1116         sq->dbinfo.hwq = &sq->hwq;
1117         sq->dbinfo.xid = qp->id;
1118         sq->dbinfo.db = qp->dpi->dbr;
1119         sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
1120         if (rq->max_wqe) {
1121                 rq->dbinfo.hwq = &rq->hwq;
1122                 rq->dbinfo.xid = qp->id;
1123                 rq->dbinfo.db = qp->dpi->dbr;
1124                 rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
1125         }
1126         tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1127         rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1128         rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;
1129
1130         return 0;
1131 fail:
1132         bnxt_qplib_free_hwq(res, &qp->irrq);
1133 fail_orrq:
1134         bnxt_qplib_free_hwq(res, &qp->orrq);
1135 rq_swq:
1136         kfree(rq->swq);
1137 fail_rq:
1138         bnxt_qplib_free_hwq(res, &rq->hwq);
1139 sq_swq:
1140         kfree(sq->swq);
1141 fail_sq:
1142         bnxt_qplib_free_hwq(res, &sq->hwq);
1143 exit:
1144         return rc;
1145 }
1146
1147 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1148 {
1149         switch (qp->state) {
1150         case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1151                 /* INIT->RTR, configure the path_mtu to the default
1152                  * 2048 if not being requested
1153                  */
1154                 if (!(qp->modify_flags &
1155                     CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1156                         qp->modify_flags |=
1157                                 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1158                         qp->path_mtu =
1159                                 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1160                 }
1161                 qp->modify_flags &=
1162                         ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
1163                 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1164                 if (qp->max_dest_rd_atomic < 1)
1165                         qp->max_dest_rd_atomic = 1;
1166                 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1167                 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1168                 if (!(qp->modify_flags &
1169                     CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1170                         qp->modify_flags |=
1171                                 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1172                         qp->ah.sgid_index = 0;
1173                 }
1174                 break;
1175         default:
1176                 break;
1177         }
1178 }
1179
1180 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1181 {
1182         switch (qp->state) {
1183         case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1184                 /* Bono FW requires the max_rd_atomic to be >= 1 */
1185                 if (qp->max_rd_atomic < 1)
1186                         qp->max_rd_atomic = 1;
1187                 /* Bono FW does not allow PKEY_INDEX,
1188                  * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1189                  * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1190                  * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1191                  * modification
1192                  */
1193                 qp->modify_flags &=
1194                         ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1195                           CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1196                           CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1197                           CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1198                           CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1199                           CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1200                           CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1201                           CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1202                           CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1203                           CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1204                           CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1205                           CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1206                 break;
1207         default:
1208                 break;
1209         }
1210 }
1211
1212 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1213 {
1214         switch (qp->cur_qp_state) {
1215         case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1216                 break;
1217         case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1218                 __modify_flags_from_init_state(qp);
1219                 break;
1220         case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1221                 __modify_flags_from_rtr_state(qp);
1222                 break;
1223         case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1224                 break;
1225         case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1226                 break;
1227         case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1228                 break;
1229         case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1230                 break;
1231         default:
1232                 break;
1233         }
1234 }
1235
1236 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1237 {
1238         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1239         struct creq_modify_qp_resp resp = {};
1240         struct bnxt_qplib_cmdqmsg msg = {};
1241         struct cmdq_modify_qp req = {};
1242         u32 temp32[4];
1243         u32 bmask;
1244         int rc;
1245
1246         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1247                                  CMDQ_BASE_OPCODE_MODIFY_QP,
1248                                  sizeof(req));
1249
1250         /* Filter out the qp_attr_mask based on the state->new transition */
1251         __filter_modify_flags(qp);
1252         bmask = qp->modify_flags;
1253         req.modify_mask = cpu_to_le32(qp->modify_flags);
1254         req.qp_cid = cpu_to_le32(qp->id);
1255         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1256                 req.network_type_en_sqd_async_notify_new_state =
1257                                 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1258                                 (qp->en_sqd_async_notify ?
1259                                         CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1260         }
1261         req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1262
1263         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1264                 req.access = qp->access;
1265
1266         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY)
1267                 req.pkey = cpu_to_le16(IB_DEFAULT_PKEY_FULL);
1268
1269         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1270                 req.qkey = cpu_to_le32(qp->qkey);
1271
1272         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1273                 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1274                 req.dgid[0] = cpu_to_le32(temp32[0]);
1275                 req.dgid[1] = cpu_to_le32(temp32[1]);
1276                 req.dgid[2] = cpu_to_le32(temp32[2]);
1277                 req.dgid[3] = cpu_to_le32(temp32[3]);
1278         }
1279         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1280                 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1281
1282         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1283                 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1284                                              [qp->ah.sgid_index]);
1285
1286         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1287                 req.hop_limit = qp->ah.hop_limit;
1288
1289         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1290                 req.traffic_class = qp->ah.traffic_class;
1291
1292         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1293                 memcpy(req.dest_mac, qp->ah.dmac, 6);
1294
1295         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1296                 req.path_mtu_pingpong_push_enable |= qp->path_mtu;
1297
1298         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1299                 req.timeout = qp->timeout;
1300
1301         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1302                 req.retry_cnt = qp->retry_cnt;
1303
1304         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1305                 req.rnr_retry = qp->rnr_retry;
1306
1307         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1308                 req.min_rnr_timer = qp->min_rnr_timer;
1309
1310         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1311                 req.rq_psn = cpu_to_le32(qp->rq.psn);
1312
1313         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1314                 req.sq_psn = cpu_to_le32(qp->sq.psn);
1315
1316         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1317                 req.max_rd_atomic =
1318                         ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1319
1320         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1321                 req.max_dest_rd_atomic =
1322                         IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1323
1324         req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1325         req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1326         req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1327         req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1328         req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1329         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1330                 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1331
1332         req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);
1333
1334         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),  sizeof(resp), 0);
1335         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1336         if (rc)
1337                 return rc;
1338         qp->cur_qp_state = qp->state;
1339         return 0;
1340 }
1341
1342 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1343 {
1344         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1345         struct creq_query_qp_resp resp = {};
1346         struct bnxt_qplib_cmdqmsg msg = {};
1347         struct bnxt_qplib_rcfw_sbuf *sbuf;
1348         struct creq_query_qp_resp_sb *sb;
1349         struct cmdq_query_qp req = {};
1350         u32 temp32[4];
1351         int i, rc = 0;
1352
1353         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1354                                  CMDQ_BASE_OPCODE_QUERY_QP,
1355                                  sizeof(req));
1356
1357         sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
1358         if (!sbuf)
1359                 return -ENOMEM;
1360         sb = sbuf->sb;
1361
1362         req.qp_cid = cpu_to_le32(qp->id);
1363         req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
1364         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, sbuf, sizeof(req),
1365                                 sizeof(resp), 0);
1366         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1367         if (rc)
1368                 goto bail;
1369         /* Extract the context from the side buffer */
1370         qp->state = sb->en_sqd_async_notify_state &
1371                         CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1372         qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1373                                   CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ?
1374                                   true : false;
1375         qp->access = sb->access;
1376         qp->pkey_index = le16_to_cpu(sb->pkey);
1377         qp->qkey = le32_to_cpu(sb->qkey);
1378
1379         temp32[0] = le32_to_cpu(sb->dgid[0]);
1380         temp32[1] = le32_to_cpu(sb->dgid[1]);
1381         temp32[2] = le32_to_cpu(sb->dgid[2]);
1382         temp32[3] = le32_to_cpu(sb->dgid[3]);
1383         memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1384
1385         qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1386
1387         qp->ah.sgid_index = 0;
1388         for (i = 0; i < res->sgid_tbl.max; i++) {
1389                 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1390                         qp->ah.sgid_index = i;
1391                         break;
1392                 }
1393         }
1394         if (i == res->sgid_tbl.max)
1395                 dev_warn(&res->pdev->dev, "SGID not found??\n");
1396
1397         qp->ah.hop_limit = sb->hop_limit;
1398         qp->ah.traffic_class = sb->traffic_class;
1399         memcpy(qp->ah.dmac, sb->dest_mac, 6);
1400         qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1401                                 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1402                                 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1403         qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1404                                     CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1405                                     CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1406         qp->timeout = sb->timeout;
1407         qp->retry_cnt = sb->retry_cnt;
1408         qp->rnr_retry = sb->rnr_retry;
1409         qp->min_rnr_timer = sb->min_rnr_timer;
1410         qp->rq.psn = le32_to_cpu(sb->rq_psn);
1411         qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1412         qp->sq.psn = le32_to_cpu(sb->sq_psn);
1413         qp->max_dest_rd_atomic =
1414                         IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1415         qp->sq.max_wqe = qp->sq.hwq.max_elements;
1416         qp->rq.max_wqe = qp->rq.hwq.max_elements;
1417         qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1418         qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1419         qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1420         qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1421         memcpy(qp->smac, sb->src_mac, 6);
1422         qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1423 bail:
1424         bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
1425         return rc;
1426 }
1427
1428 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1429 {
1430         struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1431         struct cq_base *hw_cqe;
1432         int i;
1433
1434         for (i = 0; i < cq_hwq->max_elements; i++) {
1435                 hw_cqe = bnxt_qplib_get_qe(cq_hwq, i, NULL);
1436                 if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements))
1437                         continue;
1438                 /*
1439                  * The valid test of the entry must be done first before
1440                  * reading any further.
1441                  */
1442                 dma_rmb();
1443                 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1444                 case CQ_BASE_CQE_TYPE_REQ:
1445                 case CQ_BASE_CQE_TYPE_TERMINAL:
1446                 {
1447                         struct cq_req *cqe = (struct cq_req *)hw_cqe;
1448
1449                         if (qp == le64_to_cpu(cqe->qp_handle))
1450                                 cqe->qp_handle = 0;
1451                         break;
1452                 }
1453                 case CQ_BASE_CQE_TYPE_RES_RC:
1454                 case CQ_BASE_CQE_TYPE_RES_UD:
1455                 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1456                 {
1457                         struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1458
1459                         if (qp == le64_to_cpu(cqe->qp_handle))
1460                                 cqe->qp_handle = 0;
1461                         break;
1462                 }
1463                 default:
1464                         break;
1465                 }
1466         }
1467 }
1468
1469 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1470                           struct bnxt_qplib_qp *qp)
1471 {
1472         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1473         struct creq_destroy_qp_resp resp = {};
1474         struct bnxt_qplib_cmdqmsg msg = {};
1475         struct cmdq_destroy_qp req = {};
1476         u32 tbl_indx;
1477         int rc;
1478
1479         tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
1480         rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1481         rcfw->qp_tbl[tbl_indx].qp_handle = NULL;
1482
1483         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
1484                                  CMDQ_BASE_OPCODE_DESTROY_QP,
1485                                  sizeof(req));
1486
1487         req.qp_cid = cpu_to_le32(qp->id);
1488         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
1489                                 sizeof(resp), 0);
1490         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
1491         if (rc) {
1492                 rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
1493                 rcfw->qp_tbl[tbl_indx].qp_handle = qp;
1494                 return rc;
1495         }
1496
1497         return 0;
1498 }
1499
1500 void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
1501                             struct bnxt_qplib_qp *qp)
1502 {
1503         bnxt_qplib_free_qp_hdr_buf(res, qp);
1504         bnxt_qplib_free_hwq(res, &qp->sq.hwq);
1505         kfree(qp->sq.swq);
1506
1507         bnxt_qplib_free_hwq(res, &qp->rq.hwq);
1508         kfree(qp->rq.swq);
1509
1510         if (qp->irrq.max_elements)
1511                 bnxt_qplib_free_hwq(res, &qp->irrq);
1512         if (qp->orrq.max_elements)
1513                 bnxt_qplib_free_hwq(res, &qp->orrq);
1514
1515 }
1516
1517 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1518                                 struct bnxt_qplib_sge *sge)
1519 {
1520         struct bnxt_qplib_q *sq = &qp->sq;
1521         u32 sw_prod;
1522
1523         memset(sge, 0, sizeof(*sge));
1524
1525         if (qp->sq_hdr_buf) {
1526                 sw_prod = sq->swq_start;
1527                 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1528                                          sw_prod * qp->sq_hdr_buf_size);
1529                 sge->lkey = 0xFFFFFFFF;
1530                 sge->size = qp->sq_hdr_buf_size;
1531                 return qp->sq_hdr_buf + sw_prod * sge->size;
1532         }
1533         return NULL;
1534 }
1535
1536 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1537 {
1538         struct bnxt_qplib_q *rq = &qp->rq;
1539
1540         return rq->swq_start;
1541 }
1542
1543 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1544 {
1545         return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1546 }
1547
1548 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1549                                 struct bnxt_qplib_sge *sge)
1550 {
1551         struct bnxt_qplib_q *rq = &qp->rq;
1552         u32 sw_prod;
1553
1554         memset(sge, 0, sizeof(*sge));
1555
1556         if (qp->rq_hdr_buf) {
1557                 sw_prod = rq->swq_start;
1558                 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1559                                          sw_prod * qp->rq_hdr_buf_size);
1560                 sge->lkey = 0xFFFFFFFF;
1561                 sge->size = qp->rq_hdr_buf_size;
1562                 return qp->rq_hdr_buf + sw_prod * sge->size;
1563         }
1564         return NULL;
1565 }
1566
1567 static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
1568                                        struct bnxt_qplib_swqe *wqe,
1569                                        struct bnxt_qplib_swq *swq)
1570 {
1571         struct sq_psn_search_ext *psns_ext;
1572         struct sq_psn_search *psns;
1573         u32 flg_npsn;
1574         u32 op_spsn;
1575
1576         if (!swq->psn_search)
1577                 return;
1578         psns = swq->psn_search;
1579         psns_ext = swq->psn_ext;
1580
1581         op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1582                     SQ_PSN_SEARCH_START_PSN_MASK);
1583         op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1584                      SQ_PSN_SEARCH_OPCODE_MASK);
1585         flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1586                      SQ_PSN_SEARCH_NEXT_PSN_MASK);
1587
1588         if (bnxt_qplib_is_chip_gen_p5(qp->cctx)) {
1589                 psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
1590                 psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
1591                 psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
1592         } else {
1593                 psns->opcode_start_psn = cpu_to_le32(op_spsn);
1594                 psns->flags_next_psn = cpu_to_le32(flg_npsn);
1595         }
1596 }
1597
1598 static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
1599                                  struct bnxt_qplib_swqe *wqe,
1600                                  u16 *idx)
1601 {
1602         struct bnxt_qplib_hwq *hwq;
1603         int len, t_len, offt;
1604         bool pull_dst = true;
1605         void *il_dst = NULL;
1606         void *il_src = NULL;
1607         int t_cplen, cplen;
1608         int indx;
1609
1610         hwq = &qp->sq.hwq;
1611         t_len = 0;
1612         for (indx = 0; indx < wqe->num_sge; indx++) {
1613                 len = wqe->sg_list[indx].size;
1614                 il_src = (void *)wqe->sg_list[indx].addr;
1615                 t_len += len;
1616                 if (t_len > qp->max_inline_data)
1617                         goto bad;
1618                 while (len) {
1619                         if (pull_dst) {
1620                                 pull_dst = false;
1621                                 il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
1622                                 (*idx)++;
1623                                 t_cplen = 0;
1624                                 offt = 0;
1625                         }
1626                         cplen = min_t(int, len, sizeof(struct sq_sge));
1627                         cplen = min_t(int, cplen,
1628                                         (sizeof(struct sq_sge) - offt));
1629                         memcpy(il_dst, il_src, cplen);
1630                         t_cplen += cplen;
1631                         il_src += cplen;
1632                         il_dst += cplen;
1633                         offt += cplen;
1634                         len -= cplen;
1635                         if (t_cplen == sizeof(struct sq_sge))
1636                                 pull_dst = true;
1637                 }
1638         }
1639
1640         return t_len;
1641 bad:
1642         return -ENOMEM;
1643 }
1644
1645 static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
1646                                struct bnxt_qplib_sge *ssge,
1647                                u16 nsge, u16 *idx)
1648 {
1649         struct sq_sge *dsge;
1650         int indx, len = 0;
1651
1652         for (indx = 0; indx < nsge; indx++, (*idx)++) {
1653                 dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
1654                 dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
1655                 dsge->l_key = cpu_to_le32(ssge[indx].lkey);
1656                 dsge->size = cpu_to_le32(ssge[indx].size);
1657                 len += ssge[indx].size;
1658         }
1659
1660         return len;
1661 }
1662
1663 static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
1664                                      struct bnxt_qplib_swqe *wqe,
1665                                      u16 *wqe_sz, u16 *qdf, u8 mode)
1666 {
1667         u32 ilsize, bytes;
1668         u16 nsge;
1669         u16 slot;
1670
1671         nsge = wqe->num_sge;
1672         /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
1673         bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
1674         if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1675                 ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
1676                 bytes = ALIGN(ilsize, sizeof(struct sq_sge));
1677                 bytes += sizeof(struct sq_send_hdr);
1678         }
1679
1680         *qdf =  __xlate_qfd(qp->sq.q_full_delta, bytes);
1681         slot = bytes >> 4;
1682         *wqe_sz = slot;
1683         if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
1684                 slot = 8;
1685         return slot;
1686 }
1687
1688 static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_q *sq,
1689                                      struct bnxt_qplib_swq *swq)
1690 {
1691         struct bnxt_qplib_hwq *hwq;
1692         u32 pg_num, pg_indx;
1693         void *buff;
1694         u32 tail;
1695
1696         hwq = &sq->hwq;
1697         if (!hwq->pad_pg)
1698                 return;
1699         tail = swq->slot_idx / sq->dbinfo.max_slot;
1700         pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
1701         pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
1702         buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
1703         swq->psn_ext = buff;
1704         swq->psn_search = buff;
1705 }
1706
1707 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1708 {
1709         struct bnxt_qplib_q *sq = &qp->sq;
1710
1711         bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
1712 }
1713
1714 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1715                          struct bnxt_qplib_swqe *wqe)
1716 {
1717         struct bnxt_qplib_nq_work *nq_work = NULL;
1718         int i, rc = 0, data_len = 0, pkt_num = 0;
1719         struct bnxt_qplib_q *sq = &qp->sq;
1720         struct bnxt_qplib_hwq *hwq;
1721         struct bnxt_qplib_swq *swq;
1722         bool sch_handler = false;
1723         u16 wqe_sz, qdf = 0;
1724         void *base_hdr;
1725         void *ext_hdr;
1726         __le32 temp32;
1727         u32 wqe_idx;
1728         u32 slots;
1729         u16 idx;
1730
1731         hwq = &sq->hwq;
1732         if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
1733             qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1734                 dev_err(&hwq->pdev->dev,
1735                         "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1736                         qp->id, qp->state);
1737                 rc = -EINVAL;
1738                 goto done;
1739         }
1740
1741         slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
1742         if (bnxt_qplib_queue_full(sq, slots + qdf)) {
1743                 dev_err(&hwq->pdev->dev,
1744                         "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
1745                         hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
1746                 rc = -ENOMEM;
1747                 goto done;
1748         }
1749
1750         swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
1751         bnxt_qplib_pull_psn_buff(sq, swq);
1752
1753         idx = 0;
1754         swq->slot_idx = hwq->prod;
1755         swq->slots = slots;
1756         swq->wr_id = wqe->wr_id;
1757         swq->type = wqe->type;
1758         swq->flags = wqe->flags;
1759         swq->start_psn = sq->psn & BTH_PSN_MASK;
1760         if (qp->sig_type)
1761                 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1762
1763         if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1764                 sch_handler = true;
1765                 dev_dbg(&hwq->pdev->dev,
1766                         "%s Error QP. Scheduling for poll_cq\n", __func__);
1767                 goto queue_err;
1768         }
1769
1770         base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1771         ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
1772         memset(base_hdr, 0, sizeof(struct sq_sge));
1773         memset(ext_hdr, 0, sizeof(struct sq_sge));
1774
1775         if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
1776                 /* Copy the inline data */
1777                 data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
1778         else
1779                 data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
1780                                                &idx);
1781         if (data_len < 0)
1782                 goto queue_err;
1783         /* Specifics */
1784         switch (wqe->type) {
1785         case BNXT_QPLIB_SWQE_TYPE_SEND:
1786                 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1787                         struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
1788                         struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
1789                         /* Assemble info for Raw Ethertype QPs */
1790
1791                         sqe->wqe_type = wqe->type;
1792                         sqe->flags = wqe->flags;
1793                         sqe->wqe_size = wqe_sz;
1794                         sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1795                         sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1796                         sqe->length = cpu_to_le32(data_len);
1797                         ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1798                                 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1799                                 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1800
1801                         break;
1802                 }
1803                 fallthrough;
1804         case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1805         case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1806         {
1807                 struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
1808                 struct sq_send_hdr *sqe = base_hdr;
1809
1810                 sqe->wqe_type = wqe->type;
1811                 sqe->flags = wqe->flags;
1812                 sqe->wqe_size = wqe_sz;
1813                 sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
1814                 if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
1815                     qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
1816                         sqe->q_key = cpu_to_le32(wqe->send.q_key);
1817                         sqe->length = cpu_to_le32(data_len);
1818                         sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1819                         ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
1820                                                       SQ_SEND_DST_QP_MASK);
1821                         ext_sqe->avid = cpu_to_le32(wqe->send.avid &
1822                                                     SQ_SEND_AVID_MASK);
1823                 } else {
1824                         sqe->length = cpu_to_le32(data_len);
1825                         if (qp->mtu)
1826                                 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1827                         if (!pkt_num)
1828                                 pkt_num = 1;
1829                         sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1830                 }
1831                 break;
1832         }
1833         case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1834         case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1835         case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1836         {
1837                 struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
1838                 struct sq_rdma_hdr *sqe = base_hdr;
1839
1840                 sqe->wqe_type = wqe->type;
1841                 sqe->flags = wqe->flags;
1842                 sqe->wqe_size = wqe_sz;
1843                 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1844                 sqe->length = cpu_to_le32((u32)data_len);
1845                 ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1846                 ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1847                 if (qp->mtu)
1848                         pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1849                 if (!pkt_num)
1850                         pkt_num = 1;
1851                 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1852                 break;
1853         }
1854         case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
1855         case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
1856         {
1857                 struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
1858                 struct sq_atomic_hdr *sqe = base_hdr;
1859
1860                 sqe->wqe_type = wqe->type;
1861                 sqe->flags = wqe->flags;
1862                 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
1863                 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
1864                 ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
1865                 ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
1866                 if (qp->mtu)
1867                         pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1868                 if (!pkt_num)
1869                         pkt_num = 1;
1870                 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1871                 break;
1872         }
1873         case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
1874         {
1875                 struct sq_localinvalidate *sqe = base_hdr;
1876
1877                 sqe->wqe_type = wqe->type;
1878                 sqe->flags = wqe->flags;
1879                 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
1880
1881                 break;
1882         }
1883         case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
1884         {
1885                 struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
1886                 struct sq_fr_pmr_hdr *sqe = base_hdr;
1887
1888                 sqe->wqe_type = wqe->type;
1889                 sqe->flags = wqe->flags;
1890                 sqe->access_cntl = wqe->frmr.access_cntl |
1891                                    SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
1892                 sqe->zero_based_page_size_log =
1893                         (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
1894                         SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
1895                         (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
1896                 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
1897                 temp32 = cpu_to_le32(wqe->frmr.length);
1898                 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
1899                 sqe->numlevels_pbl_page_size_log =
1900                         ((wqe->frmr.pbl_pg_sz_log <<
1901                                         SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
1902                                         SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
1903                         ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
1904                                         SQ_FR_PMR_NUMLEVELS_MASK);
1905
1906                 for (i = 0; i < wqe->frmr.page_list_len; i++)
1907                         wqe->frmr.pbl_ptr[i] = cpu_to_le64(
1908                                                 wqe->frmr.page_list[i] |
1909                                                 PTU_PTE_VALID);
1910                 ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
1911                 ext_sqe->va = cpu_to_le64(wqe->frmr.va);
1912
1913                 break;
1914         }
1915         case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
1916         {
1917                 struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
1918                 struct sq_bind_hdr *sqe = base_hdr;
1919
1920                 sqe->wqe_type = wqe->type;
1921                 sqe->flags = wqe->flags;
1922                 sqe->access_cntl = wqe->bind.access_cntl;
1923                 sqe->mw_type_zero_based = wqe->bind.mw_type |
1924                         (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
1925                 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
1926                 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
1927                 ext_sqe->va = cpu_to_le64(wqe->bind.va);
1928                 ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
1929                 break;
1930         }
1931         default:
1932                 /* Bad wqe, return error */
1933                 rc = -EINVAL;
1934                 goto done;
1935         }
1936         swq->next_psn = sq->psn & BTH_PSN_MASK;
1937         bnxt_qplib_fill_psn_search(qp, wqe, swq);
1938 queue_err:
1939         bnxt_qplib_swq_mod_start(sq, wqe_idx);
1940         bnxt_qplib_hwq_incr_prod(hwq, swq->slots);
1941         qp->wqe_cnt++;
1942 done:
1943         if (sch_handler) {
1944                 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
1945                 if (nq_work) {
1946                         nq_work->cq = qp->scq;
1947                         nq_work->nq = qp->scq->nq;
1948                         INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
1949                         queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
1950                 } else {
1951                         dev_err(&hwq->pdev->dev,
1952                                 "FP: Failed to allocate SQ nq_work!\n");
1953                         rc = -ENOMEM;
1954                 }
1955         }
1956         return rc;
1957 }
1958
1959 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
1960 {
1961         struct bnxt_qplib_q *rq = &qp->rq;
1962
1963         bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
1964 }
1965
1966 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
1967                          struct bnxt_qplib_swqe *wqe)
1968 {
1969         struct bnxt_qplib_nq_work *nq_work = NULL;
1970         struct bnxt_qplib_q *rq = &qp->rq;
1971         struct rq_wqe_hdr *base_hdr;
1972         struct rq_ext_hdr *ext_hdr;
1973         struct bnxt_qplib_hwq *hwq;
1974         struct bnxt_qplib_swq *swq;
1975         bool sch_handler = false;
1976         u16 wqe_sz, idx;
1977         u32 wqe_idx;
1978         int rc = 0;
1979
1980         hwq = &rq->hwq;
1981         if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
1982                 dev_err(&hwq->pdev->dev,
1983                         "QPLIB: FP: QP (0x%x) is in the 0x%x state",
1984                         qp->id, qp->state);
1985                 rc = -EINVAL;
1986                 goto done;
1987         }
1988
1989         if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
1990                 dev_err(&hwq->pdev->dev,
1991                         "FP: QP (0x%x) RQ is full!\n", qp->id);
1992                 rc = -EINVAL;
1993                 goto done;
1994         }
1995
1996         swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
1997         swq->wr_id = wqe->wr_id;
1998         swq->slots = rq->dbinfo.max_slot;
1999
2000         if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
2001                 sch_handler = true;
2002                 dev_dbg(&hwq->pdev->dev,
2003                         "%s: Error QP. Scheduling for poll_cq\n", __func__);
2004                 goto queue_err;
2005         }
2006
2007         idx = 0;
2008         base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2009         ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
2010         memset(base_hdr, 0, sizeof(struct sq_sge));
2011         memset(ext_hdr, 0, sizeof(struct sq_sge));
2012         wqe_sz = (sizeof(struct rq_wqe_hdr) +
2013         wqe->num_sge * sizeof(struct sq_sge)) >> 4;
2014         bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
2015         if (!wqe->num_sge) {
2016                 struct sq_sge *sge;
2017
2018                 sge = bnxt_qplib_get_prod_qe(hwq, idx++);
2019                 sge->size = 0;
2020                 wqe_sz++;
2021         }
2022         base_hdr->wqe_type = wqe->type;
2023         base_hdr->flags = wqe->flags;
2024         base_hdr->wqe_size = wqe_sz;
2025         base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
2026 queue_err:
2027         bnxt_qplib_swq_mod_start(rq, wqe_idx);
2028         bnxt_qplib_hwq_incr_prod(hwq, swq->slots);
2029 done:
2030         if (sch_handler) {
2031                 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
2032                 if (nq_work) {
2033                         nq_work->cq = qp->rcq;
2034                         nq_work->nq = qp->rcq->nq;
2035                         INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
2036                         queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
2037                 } else {
2038                         dev_err(&hwq->pdev->dev,
2039                                 "FP: Failed to allocate RQ nq_work!\n");
2040                         rc = -ENOMEM;
2041                 }
2042         }
2043
2044         return rc;
2045 }
2046
2047 /* CQ */
2048 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2049 {
2050         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2051         struct bnxt_qplib_hwq_attr hwq_attr = {};
2052         struct creq_create_cq_resp resp = {};
2053         struct bnxt_qplib_cmdqmsg msg = {};
2054         struct cmdq_create_cq req = {};
2055         struct bnxt_qplib_pbl *pbl;
2056         u32 pg_sz_lvl;
2057         int rc;
2058
2059         hwq_attr.res = res;
2060         hwq_attr.depth = cq->max_wqe;
2061         hwq_attr.stride = sizeof(struct cq_base);
2062         hwq_attr.type = HWQ_TYPE_QUEUE;
2063         hwq_attr.sginfo = &cq->sg_info;
2064         rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
2065         if (rc)
2066                 goto exit;
2067
2068         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2069                                  CMDQ_BASE_OPCODE_CREATE_CQ,
2070                                  sizeof(req));
2071
2072         if (!cq->dpi) {
2073                 dev_err(&rcfw->pdev->dev,
2074                         "FP: CREATE_CQ failed due to NULL DPI\n");
2075                 return -EINVAL;
2076         }
2077         req.dpi = cpu_to_le32(cq->dpi->dpi);
2078         req.cq_handle = cpu_to_le64(cq->cq_handle);
2079         req.cq_size = cpu_to_le32(cq->hwq.max_elements);
2080         pbl = &cq->hwq.pbl[PBL_LVL_0];
2081         pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
2082                      CMDQ_CREATE_CQ_PG_SIZE_SFT);
2083         pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
2084         req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
2085         req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2086         req.cq_fco_cnq_id = cpu_to_le32(
2087                         (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
2088                          CMDQ_CREATE_CQ_CNQ_ID_SFT);
2089         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2090                                 sizeof(resp), 0);
2091         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2092         if (rc)
2093                 goto fail;
2094
2095         cq->id = le32_to_cpu(resp.xid);
2096         cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
2097         init_waitqueue_head(&cq->waitq);
2098         INIT_LIST_HEAD(&cq->sqf_head);
2099         INIT_LIST_HEAD(&cq->rqf_head);
2100         spin_lock_init(&cq->compl_lock);
2101         spin_lock_init(&cq->flush_lock);
2102
2103         cq->dbinfo.hwq = &cq->hwq;
2104         cq->dbinfo.xid = cq->id;
2105         cq->dbinfo.db = cq->dpi->dbr;
2106         cq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem;
2107
2108         bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);
2109
2110         return 0;
2111
2112 fail:
2113         bnxt_qplib_free_hwq(res, &cq->hwq);
2114 exit:
2115         return rc;
2116 }
2117
2118 void bnxt_qplib_resize_cq_complete(struct bnxt_qplib_res *res,
2119                                    struct bnxt_qplib_cq *cq)
2120 {
2121         bnxt_qplib_free_hwq(res, &cq->hwq);
2122         memcpy(&cq->hwq, &cq->resize_hwq, sizeof(cq->hwq));
2123 }
2124
2125 int bnxt_qplib_resize_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq,
2126                          int new_cqes)
2127 {
2128         struct bnxt_qplib_hwq_attr hwq_attr = {};
2129         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2130         struct creq_resize_cq_resp resp = {};
2131         struct bnxt_qplib_cmdqmsg msg = {};
2132         struct cmdq_resize_cq req = {};
2133         struct bnxt_qplib_pbl *pbl;
2134         u32 pg_sz, lvl, new_sz;
2135         int rc;
2136
2137         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2138                                  CMDQ_BASE_OPCODE_RESIZE_CQ,
2139                                  sizeof(req));
2140         hwq_attr.sginfo = &cq->sg_info;
2141         hwq_attr.res = res;
2142         hwq_attr.depth = new_cqes;
2143         hwq_attr.stride = sizeof(struct cq_base);
2144         hwq_attr.type = HWQ_TYPE_QUEUE;
2145         rc = bnxt_qplib_alloc_init_hwq(&cq->resize_hwq, &hwq_attr);
2146         if (rc)
2147                 return rc;
2148
2149         req.cq_cid = cpu_to_le32(cq->id);
2150         pbl = &cq->resize_hwq.pbl[PBL_LVL_0];
2151         pg_sz = bnxt_qplib_base_pg_size(&cq->resize_hwq);
2152         lvl = (cq->resize_hwq.level << CMDQ_RESIZE_CQ_LVL_SFT) &
2153                                        CMDQ_RESIZE_CQ_LVL_MASK;
2154         new_sz = (new_cqes << CMDQ_RESIZE_CQ_NEW_CQ_SIZE_SFT) &
2155                   CMDQ_RESIZE_CQ_NEW_CQ_SIZE_MASK;
2156         req.new_cq_size_pg_size_lvl = cpu_to_le32(new_sz | pg_sz | lvl);
2157         req.new_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
2158
2159         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2160                                 sizeof(resp), 0);
2161         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2162         return rc;
2163 }
2164
2165 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2166 {
2167         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2168         struct creq_destroy_cq_resp resp = {};
2169         struct bnxt_qplib_cmdqmsg msg = {};
2170         struct cmdq_destroy_cq req = {};
2171         u16 total_cnq_events;
2172         int rc;
2173
2174         bnxt_qplib_rcfw_cmd_prep((struct cmdq_base *)&req,
2175                                  CMDQ_BASE_OPCODE_DESTROY_CQ,
2176                                  sizeof(req));
2177
2178         req.cq_cid = cpu_to_le32(cq->id);
2179         bnxt_qplib_fill_cmdqmsg(&msg, &req, &resp, NULL, sizeof(req),
2180                                 sizeof(resp), 0);
2181         rc = bnxt_qplib_rcfw_send_message(rcfw, &msg);
2182         if (rc)
2183                 return rc;
2184         total_cnq_events = le16_to_cpu(resp.total_cnq_events);
2185         __wait_for_all_nqes(cq, total_cnq_events);
2186         bnxt_qplib_free_hwq(res, &cq->hwq);
2187         return 0;
2188 }
2189
2190 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2191                       struct bnxt_qplib_cqe **pcqe, int *budget)
2192 {
2193         struct bnxt_qplib_cqe *cqe;
2194         u32 start, last;
2195         int rc = 0;
2196
2197         /* Now complete all outstanding SQEs with FLUSHED_ERR */
2198         start = sq->swq_start;
2199         cqe = *pcqe;
2200         while (*budget) {
2201                 last = sq->swq_last;
2202                 if (start == last)
2203                         break;
2204                 /* Skip the FENCE WQE completions */
2205                 if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
2206                         bnxt_qplib_cancel_phantom_processing(qp);
2207                         goto skip_compl;
2208                 }
2209                 memset(cqe, 0, sizeof(*cqe));
2210                 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2211                 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2212                 cqe->qp_handle = (u64)(unsigned long)qp;
2213                 cqe->wr_id = sq->swq[last].wr_id;
2214                 cqe->src_qp = qp->id;
2215                 cqe->type = sq->swq[last].type;
2216                 cqe++;
2217                 (*budget)--;
2218 skip_compl:
2219                 bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[last].slots);
2220                 sq->swq_last = sq->swq[last].next_idx;
2221         }
2222         *pcqe = cqe;
2223         if (!(*budget) && sq->swq_last != start)
2224                 /* Out of budget */
2225                 rc = -EAGAIN;
2226
2227         return rc;
2228 }
2229
2230 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2231                       struct bnxt_qplib_cqe **pcqe, int *budget)
2232 {
2233         struct bnxt_qplib_cqe *cqe;
2234         u32 start, last;
2235         int opcode = 0;
2236         int rc = 0;
2237
2238         switch (qp->type) {
2239         case CMDQ_CREATE_QP1_TYPE_GSI:
2240                 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2241                 break;
2242         case CMDQ_CREATE_QP_TYPE_RC:
2243                 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2244                 break;
2245         case CMDQ_CREATE_QP_TYPE_UD:
2246         case CMDQ_CREATE_QP_TYPE_GSI:
2247                 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2248                 break;
2249         }
2250
2251         /* Flush the rest of the RQ */
2252         start = rq->swq_start;
2253         cqe = *pcqe;
2254         while (*budget) {
2255                 last = rq->swq_last;
2256                 if (last == start)
2257                         break;
2258                 memset(cqe, 0, sizeof(*cqe));
2259                 cqe->status =
2260                     CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2261                 cqe->opcode = opcode;
2262                 cqe->qp_handle = (unsigned long)qp;
2263                 cqe->wr_id = rq->swq[last].wr_id;
2264                 cqe++;
2265                 (*budget)--;
2266                 bnxt_qplib_hwq_incr_cons(&rq->hwq, rq->swq[last].slots);
2267                 rq->swq_last = rq->swq[last].next_idx;
2268         }
2269         *pcqe = cqe;
2270         if (!*budget && rq->swq_last != start)
2271                 /* Out of budget */
2272                 rc = -EAGAIN;
2273
2274         return rc;
2275 }
2276
2277 void bnxt_qplib_mark_qp_error(void *qp_handle)
2278 {
2279         struct bnxt_qplib_qp *qp = qp_handle;
2280
2281         if (!qp)
2282                 return;
2283
2284         /* Must block new posting of SQ and RQ */
2285         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2286         bnxt_qplib_cancel_phantom_processing(qp);
2287 }
2288
2289 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2290  *       CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2291  */
2292 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2293                      u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
2294 {
2295         u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx;
2296         struct bnxt_qplib_q *sq = &qp->sq;
2297         struct cq_req *peek_req_hwcqe;
2298         struct bnxt_qplib_qp *peek_qp;
2299         struct bnxt_qplib_q *peek_sq;
2300         struct bnxt_qplib_swq *swq;
2301         struct cq_base *peek_hwcqe;
2302         int i, rc = 0;
2303
2304         /* Normal mode */
2305         /* Check for the psn_search marking before completing */
2306         swq = &sq->swq[swq_last];
2307         if (swq->psn_search &&
2308             le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2309                 /* Unmark */
2310                 swq->psn_search->flags_next_psn = cpu_to_le32
2311                         (le32_to_cpu(swq->psn_search->flags_next_psn)
2312                                      & ~0x80000000);
2313                 dev_dbg(&cq->hwq.pdev->dev,
2314                         "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2315                         cq_cons, qp->id, swq_last, cqe_sq_cons);
2316                 sq->condition = true;
2317                 sq->send_phantom = true;
2318
2319                 /* TODO: Only ARM if the previous SQE is ARMALL */
2320                 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
2321                 rc = -EAGAIN;
2322                 goto out;
2323         }
2324         if (sq->condition) {
2325                 /* Peek at the completions */
2326                 peek_raw_cq_cons = cq->hwq.cons;
2327                 peek_sw_cq_cons = cq_cons;
2328                 i = cq->hwq.max_elements;
2329                 while (i--) {
2330                         peek_sw_cq_cons = HWQ_CMP((peek_sw_cq_cons), &cq->hwq);
2331                         peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
2332                                                        peek_sw_cq_cons, NULL);
2333                         /* If the next hwcqe is VALID */
2334                         if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons,
2335                                           cq->hwq.max_elements)) {
2336                         /*
2337                          * The valid test of the entry must be done first before
2338                          * reading any further.
2339                          */
2340                                 dma_rmb();
2341                                 /* If the next hwcqe is a REQ */
2342                                 if ((peek_hwcqe->cqe_type_toggle &
2343                                     CQ_BASE_CQE_TYPE_MASK) ==
2344                                     CQ_BASE_CQE_TYPE_REQ) {
2345                                         peek_req_hwcqe = (struct cq_req *)
2346                                                          peek_hwcqe;
2347                                         peek_qp = (struct bnxt_qplib_qp *)
2348                                                 ((unsigned long)
2349                                                  le64_to_cpu
2350                                                  (peek_req_hwcqe->qp_handle));
2351                                         peek_sq = &peek_qp->sq;
2352                                         peek_sq_cons_idx =
2353                                                 ((le16_to_cpu(
2354                                                   peek_req_hwcqe->sq_cons_idx)
2355                                                   - 1) % sq->max_wqe);
2356                                         /* If the hwcqe's sq's wr_id matches */
2357                                         if (peek_sq == sq &&
2358                                             sq->swq[peek_sq_cons_idx].wr_id ==
2359                                             BNXT_QPLIB_FENCE_WRID) {
2360                                                 /*
2361                                                  *  Unbreak only if the phantom
2362                                                  *  comes back
2363                                                  */
2364                                                 dev_dbg(&cq->hwq.pdev->dev,
2365                                                         "FP: Got Phantom CQE\n");
2366                                                 sq->condition = false;
2367                                                 sq->single = true;
2368                                                 rc = 0;
2369                                                 goto out;
2370                                         }
2371                                 }
2372                                 /* Valid but not the phantom, so keep looping */
2373                         } else {
2374                                 /* Not valid yet, just exit and wait */
2375                                 rc = -EINVAL;
2376                                 goto out;
2377                         }
2378                         peek_sw_cq_cons++;
2379                         peek_raw_cq_cons++;
2380                 }
2381                 dev_err(&cq->hwq.pdev->dev,
2382                         "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
2383                         cq_cons, qp->id, swq_last, cqe_sq_cons);
2384                 rc = -EINVAL;
2385         }
2386 out:
2387         return rc;
2388 }
2389
2390 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2391                                      struct cq_req *hwcqe,
2392                                      struct bnxt_qplib_cqe **pcqe, int *budget,
2393                                      u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2394 {
2395         struct bnxt_qplib_swq *swq;
2396         struct bnxt_qplib_cqe *cqe;
2397         struct bnxt_qplib_qp *qp;
2398         struct bnxt_qplib_q *sq;
2399         u32 cqe_sq_cons;
2400         int rc = 0;
2401
2402         qp = (struct bnxt_qplib_qp *)((unsigned long)
2403                                       le64_to_cpu(hwcqe->qp_handle));
2404         if (!qp) {
2405                 dev_err(&cq->hwq.pdev->dev,
2406                         "FP: Process Req qp is NULL\n");
2407                 return -EINVAL;
2408         }
2409         sq = &qp->sq;
2410
2411         cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_wqe;
2412         if (qp->sq.flushed) {
2413                 dev_dbg(&cq->hwq.pdev->dev,
2414                         "%s: QP in Flush QP = %p\n", __func__, qp);
2415                 goto done;
2416         }
2417         /* Require to walk the sq's swq to fabricate CQEs for all previously
2418          * signaled SWQEs due to CQE aggregation from the current sq cons
2419          * to the cqe_sq_cons
2420          */
2421         cqe = *pcqe;
2422         while (*budget) {
2423                 if (sq->swq_last == cqe_sq_cons)
2424                         /* Done */
2425                         break;
2426
2427                 swq = &sq->swq[sq->swq_last];
2428                 memset(cqe, 0, sizeof(*cqe));
2429                 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2430                 cqe->qp_handle = (u64)(unsigned long)qp;
2431                 cqe->src_qp = qp->id;
2432                 cqe->wr_id = swq->wr_id;
2433                 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2434                         goto skip;
2435                 cqe->type = swq->type;
2436
2437                 /* For the last CQE, check for status.  For errors, regardless
2438                  * of the request being signaled or not, it must complete with
2439                  * the hwcqe error status
2440                  */
2441                 if (swq->next_idx == cqe_sq_cons &&
2442                     hwcqe->status != CQ_REQ_STATUS_OK) {
2443                         cqe->status = hwcqe->status;
2444                         dev_err(&cq->hwq.pdev->dev,
2445                                 "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
2446                                 sq->swq_last, cqe->wr_id, cqe->status);
2447                         cqe++;
2448                         (*budget)--;
2449                         bnxt_qplib_mark_qp_error(qp);
2450                         /* Add qp to flush list of the CQ */
2451                         bnxt_qplib_add_flush_qp(qp);
2452                 } else {
2453                         /* Before we complete, do WA 9060 */
2454                         if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
2455                                       cqe_sq_cons)) {
2456                                 *lib_qp = qp;
2457                                 goto out;
2458                         }
2459                         if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2460                                 cqe->status = CQ_REQ_STATUS_OK;
2461                                 cqe++;
2462                                 (*budget)--;
2463                         }
2464                 }
2465 skip:
2466                 bnxt_qplib_hwq_incr_cons(&sq->hwq, swq->slots);
2467                 sq->swq_last = swq->next_idx;
2468                 if (sq->single)
2469                         break;
2470         }
2471 out:
2472         *pcqe = cqe;
2473         if (sq->swq_last != cqe_sq_cons) {
2474                 /* Out of budget */
2475                 rc = -EAGAIN;
2476                 goto done;
2477         }
2478         /*
2479          * Back to normal completion mode only after it has completed all of
2480          * the WC for this CQE
2481          */
2482         sq->single = false;
2483 done:
2484         return rc;
2485 }
2486
2487 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2488 {
2489         spin_lock(&srq->hwq.lock);
2490         srq->swq[srq->last_idx].next_idx = (int)tag;
2491         srq->last_idx = (int)tag;
2492         srq->swq[srq->last_idx].next_idx = -1;
2493         srq->hwq.cons++; /* Support for SRQE counter */
2494         spin_unlock(&srq->hwq.lock);
2495 }
2496
2497 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2498                                         struct cq_res_rc *hwcqe,
2499                                         struct bnxt_qplib_cqe **pcqe,
2500                                         int *budget)
2501 {
2502         struct bnxt_qplib_srq *srq;
2503         struct bnxt_qplib_cqe *cqe;
2504         struct bnxt_qplib_qp *qp;
2505         struct bnxt_qplib_q *rq;
2506         u32 wr_id_idx;
2507         int rc = 0;
2508
2509         qp = (struct bnxt_qplib_qp *)((unsigned long)
2510                                       le64_to_cpu(hwcqe->qp_handle));
2511         if (!qp) {
2512                 dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
2513                 return -EINVAL;
2514         }
2515         if (qp->rq.flushed) {
2516                 dev_dbg(&cq->hwq.pdev->dev,
2517                         "%s: QP in Flush QP = %p\n", __func__, qp);
2518                 goto done;
2519         }
2520
2521         cqe = *pcqe;
2522         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2523         cqe->length = le32_to_cpu(hwcqe->length);
2524         cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2525         cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2526         cqe->flags = le16_to_cpu(hwcqe->flags);
2527         cqe->status = hwcqe->status;
2528         cqe->qp_handle = (u64)(unsigned long)qp;
2529
2530         wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2531                                 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2532         if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2533                 srq = qp->srq;
2534                 if (!srq)
2535                         return -EINVAL;
2536                 if (wr_id_idx >= srq->hwq.max_elements) {
2537                         dev_err(&cq->hwq.pdev->dev,
2538                                 "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2539                                 wr_id_idx, srq->hwq.max_elements);
2540                         return -EINVAL;
2541                 }
2542                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2543                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2544                 cqe++;
2545                 (*budget)--;
2546                 *pcqe = cqe;
2547         } else {
2548                 struct bnxt_qplib_swq *swq;
2549
2550                 rq = &qp->rq;
2551                 if (wr_id_idx > (rq->max_wqe - 1)) {
2552                         dev_err(&cq->hwq.pdev->dev,
2553                                 "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
2554                                 wr_id_idx, rq->max_wqe);
2555                         return -EINVAL;
2556                 }
2557                 if (wr_id_idx != rq->swq_last)
2558                         return -EINVAL;
2559                 swq = &rq->swq[rq->swq_last];
2560                 cqe->wr_id = swq->wr_id;
2561                 cqe++;
2562                 (*budget)--;
2563                 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
2564                 rq->swq_last = swq->next_idx;
2565                 *pcqe = cqe;
2566
2567                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2568                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2569                         /* Add qp to flush list of the CQ */
2570                         bnxt_qplib_add_flush_qp(qp);
2571                 }
2572         }
2573
2574 done:
2575         return rc;
2576 }
2577
2578 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2579                                         struct cq_res_ud *hwcqe,
2580                                         struct bnxt_qplib_cqe **pcqe,
2581                                         int *budget)
2582 {
2583         struct bnxt_qplib_srq *srq;
2584         struct bnxt_qplib_cqe *cqe;
2585         struct bnxt_qplib_qp *qp;
2586         struct bnxt_qplib_q *rq;
2587         u32 wr_id_idx;
2588         int rc = 0;
2589
2590         qp = (struct bnxt_qplib_qp *)((unsigned long)
2591                                       le64_to_cpu(hwcqe->qp_handle));
2592         if (!qp) {
2593                 dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
2594                 return -EINVAL;
2595         }
2596         if (qp->rq.flushed) {
2597                 dev_dbg(&cq->hwq.pdev->dev,
2598                         "%s: QP in Flush QP = %p\n", __func__, qp);
2599                 goto done;
2600         }
2601         cqe = *pcqe;
2602         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2603         cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
2604         cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
2605         cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2606         cqe->flags = le16_to_cpu(hwcqe->flags);
2607         cqe->status = hwcqe->status;
2608         cqe->qp_handle = (u64)(unsigned long)qp;
2609         /*FIXME: Endianness fix needed for smace */
2610         memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
2611         wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2612                                 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2613         cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2614                                   ((le32_to_cpu(
2615                                   hwcqe->src_qp_high_srq_or_rq_wr_id) &
2616                                  CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2617
2618         if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2619                 srq = qp->srq;
2620                 if (!srq)
2621                         return -EINVAL;
2622
2623                 if (wr_id_idx >= srq->hwq.max_elements) {
2624                         dev_err(&cq->hwq.pdev->dev,
2625                                 "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2626                                 wr_id_idx, srq->hwq.max_elements);
2627                         return -EINVAL;
2628                 }
2629                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2630                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2631                 cqe++;
2632                 (*budget)--;
2633                 *pcqe = cqe;
2634         } else {
2635                 struct bnxt_qplib_swq *swq;
2636
2637                 rq = &qp->rq;
2638                 if (wr_id_idx > (rq->max_wqe - 1)) {
2639                         dev_err(&cq->hwq.pdev->dev,
2640                                 "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
2641                                 wr_id_idx, rq->max_wqe);
2642                         return -EINVAL;
2643                 }
2644
2645                 if (rq->swq_last != wr_id_idx)
2646                         return -EINVAL;
2647                 swq = &rq->swq[rq->swq_last];
2648                 cqe->wr_id = swq->wr_id;
2649                 cqe++;
2650                 (*budget)--;
2651                 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
2652                 rq->swq_last = swq->next_idx;
2653                 *pcqe = cqe;
2654
2655                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2656                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2657                         /* Add qp to flush list of the CQ */
2658                         bnxt_qplib_add_flush_qp(qp);
2659                 }
2660         }
2661 done:
2662         return rc;
2663 }
2664
2665 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2666 {
2667         struct cq_base *hw_cqe;
2668         u32 sw_cons, raw_cons;
2669         bool rc = true;
2670
2671         raw_cons = cq->hwq.cons;
2672         sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
2673         hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL);
2674          /* Check for Valid bit. If the CQE is valid, return false */
2675         rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements);
2676         return rc;
2677 }
2678
2679 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2680                                                 struct cq_res_raweth_qp1 *hwcqe,
2681                                                 struct bnxt_qplib_cqe **pcqe,
2682                                                 int *budget)
2683 {
2684         struct bnxt_qplib_qp *qp;
2685         struct bnxt_qplib_q *rq;
2686         struct bnxt_qplib_srq *srq;
2687         struct bnxt_qplib_cqe *cqe;
2688         u32 wr_id_idx;
2689         int rc = 0;
2690
2691         qp = (struct bnxt_qplib_qp *)((unsigned long)
2692                                       le64_to_cpu(hwcqe->qp_handle));
2693         if (!qp) {
2694                 dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
2695                 return -EINVAL;
2696         }
2697         if (qp->rq.flushed) {
2698                 dev_dbg(&cq->hwq.pdev->dev,
2699                         "%s: QP in Flush QP = %p\n", __func__, qp);
2700                 goto done;
2701         }
2702         cqe = *pcqe;
2703         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2704         cqe->flags = le16_to_cpu(hwcqe->flags);
2705         cqe->qp_handle = (u64)(unsigned long)qp;
2706
2707         wr_id_idx =
2708                 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2709                                 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2710         cqe->src_qp = qp->id;
2711         if (qp->id == 1 && !cqe->length) {
2712                 /* Add workaround for the length misdetection */
2713                 cqe->length = 296;
2714         } else {
2715                 cqe->length = le16_to_cpu(hwcqe->length);
2716         }
2717         cqe->pkey_index = qp->pkey_index;
2718         memcpy(cqe->smac, qp->smac, 6);
2719
2720         cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2721         cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2722         cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2723
2724         if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2725                 srq = qp->srq;
2726                 if (!srq) {
2727                         dev_err(&cq->hwq.pdev->dev,
2728                                 "FP: SRQ used but not defined??\n");
2729                         return -EINVAL;
2730                 }
2731                 if (wr_id_idx >= srq->hwq.max_elements) {
2732                         dev_err(&cq->hwq.pdev->dev,
2733                                 "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
2734                                 wr_id_idx, srq->hwq.max_elements);
2735                         return -EINVAL;
2736                 }
2737                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2738                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2739                 cqe++;
2740                 (*budget)--;
2741                 *pcqe = cqe;
2742         } else {
2743                 struct bnxt_qplib_swq *swq;
2744
2745                 rq = &qp->rq;
2746                 if (wr_id_idx > (rq->max_wqe - 1)) {
2747                         dev_err(&cq->hwq.pdev->dev,
2748                                 "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
2749                                 wr_id_idx, rq->max_wqe);
2750                         return -EINVAL;
2751                 }
2752                 if (rq->swq_last != wr_id_idx)
2753                         return -EINVAL;
2754                 swq = &rq->swq[rq->swq_last];
2755                 cqe->wr_id = swq->wr_id;
2756                 cqe++;
2757                 (*budget)--;
2758                 bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
2759                 rq->swq_last = swq->next_idx;
2760                 *pcqe = cqe;
2761
2762                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2763                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2764                         /* Add qp to flush list of the CQ */
2765                         bnxt_qplib_add_flush_qp(qp);
2766                 }
2767         }
2768
2769 done:
2770         return rc;
2771 }
2772
2773 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2774                                           struct cq_terminal *hwcqe,
2775                                           struct bnxt_qplib_cqe **pcqe,
2776                                           int *budget)
2777 {
2778         struct bnxt_qplib_qp *qp;
2779         struct bnxt_qplib_q *sq, *rq;
2780         struct bnxt_qplib_cqe *cqe;
2781         u32 swq_last = 0, cqe_cons;
2782         int rc = 0;
2783
2784         /* Check the Status */
2785         if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2786                 dev_warn(&cq->hwq.pdev->dev,
2787                          "FP: CQ Process Terminal Error status = 0x%x\n",
2788                          hwcqe->status);
2789
2790         qp = (struct bnxt_qplib_qp *)((unsigned long)
2791                                       le64_to_cpu(hwcqe->qp_handle));
2792         if (!qp) {
2793                 dev_err(&cq->hwq.pdev->dev,
2794                         "FP: CQ Process terminal qp is NULL\n");
2795                 return -EINVAL;
2796         }
2797
2798         /* Must block new posting of SQ and RQ */
2799         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2800
2801         sq = &qp->sq;
2802         rq = &qp->rq;
2803
2804         cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
2805         if (cqe_cons == 0xFFFF)
2806                 goto do_rq;
2807         cqe_cons %= sq->max_wqe;
2808
2809         if (qp->sq.flushed) {
2810                 dev_dbg(&cq->hwq.pdev->dev,
2811                         "%s: QP in Flush QP = %p\n", __func__, qp);
2812                 goto sq_done;
2813         }
2814
2815         /* Terminal CQE can also include aggregated successful CQEs prior.
2816          * So we must complete all CQEs from the current sq's cons to the
2817          * cq_cons with status OK
2818          */
2819         cqe = *pcqe;
2820         while (*budget) {
2821                 swq_last = sq->swq_last;
2822                 if (swq_last == cqe_cons)
2823                         break;
2824                 if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2825                         memset(cqe, 0, sizeof(*cqe));
2826                         cqe->status = CQ_REQ_STATUS_OK;
2827                         cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2828                         cqe->qp_handle = (u64)(unsigned long)qp;
2829                         cqe->src_qp = qp->id;
2830                         cqe->wr_id = sq->swq[swq_last].wr_id;
2831                         cqe->type = sq->swq[swq_last].type;
2832                         cqe++;
2833                         (*budget)--;
2834                 }
2835                 bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[swq_last].slots);
2836                 sq->swq_last = sq->swq[swq_last].next_idx;
2837         }
2838         *pcqe = cqe;
2839         if (!(*budget) && swq_last != cqe_cons) {
2840                 /* Out of budget */
2841                 rc = -EAGAIN;
2842                 goto sq_done;
2843         }
2844 sq_done:
2845         if (rc)
2846                 return rc;
2847 do_rq:
2848         cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
2849         if (cqe_cons == 0xFFFF) {
2850                 goto done;
2851         } else if (cqe_cons > rq->max_wqe - 1) {
2852                 dev_err(&cq->hwq.pdev->dev,
2853                         "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
2854                         cqe_cons, rq->max_wqe);
2855                 rc = -EINVAL;
2856                 goto done;
2857         }
2858
2859         if (qp->rq.flushed) {
2860                 dev_dbg(&cq->hwq.pdev->dev,
2861                         "%s: QP in Flush QP = %p\n", __func__, qp);
2862                 rc = 0;
2863                 goto done;
2864         }
2865
2866         /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
2867          * from the current rq->cons to the rq->prod regardless what the
2868          * rq->cons the terminal CQE indicates
2869          */
2870
2871         /* Add qp to flush list of the CQ */
2872         bnxt_qplib_add_flush_qp(qp);
2873 done:
2874         return rc;
2875 }
2876
2877 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
2878                                         struct cq_cutoff *hwcqe)
2879 {
2880         /* Check the Status */
2881         if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
2882                 dev_err(&cq->hwq.pdev->dev,
2883                         "FP: CQ Process Cutoff Error status = 0x%x\n",
2884                         hwcqe->status);
2885                 return -EINVAL;
2886         }
2887         clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
2888         wake_up_interruptible(&cq->waitq);
2889
2890         return 0;
2891 }
2892
2893 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
2894                                   struct bnxt_qplib_cqe *cqe,
2895                                   int num_cqes)
2896 {
2897         struct bnxt_qplib_qp *qp = NULL;
2898         u32 budget = num_cqes;
2899         unsigned long flags;
2900
2901         spin_lock_irqsave(&cq->flush_lock, flags);
2902         list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
2903                 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
2904                 __flush_sq(&qp->sq, qp, &cqe, &budget);
2905         }
2906
2907         list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
2908                 dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
2909                 __flush_rq(&qp->rq, qp, &cqe, &budget);
2910         }
2911         spin_unlock_irqrestore(&cq->flush_lock, flags);
2912
2913         return num_cqes - budget;
2914 }
2915
2916 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
2917                        int num_cqes, struct bnxt_qplib_qp **lib_qp)
2918 {
2919         struct cq_base *hw_cqe;
2920         u32 sw_cons, raw_cons;
2921         int budget, rc = 0;
2922         u8 type;
2923
2924         raw_cons = cq->hwq.cons;
2925         budget = num_cqes;
2926
2927         while (budget) {
2928                 sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
2929                 hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL);
2930
2931                 /* Check for Valid bit */
2932                 if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements))
2933                         break;
2934
2935                 /*
2936                  * The valid test of the entry must be done first before
2937                  * reading any further.
2938                  */
2939                 dma_rmb();
2940                 /* From the device's respective CQE format to qplib_wc*/
2941                 type = hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2942                 switch (type) {
2943                 case CQ_BASE_CQE_TYPE_REQ:
2944                         rc = bnxt_qplib_cq_process_req(cq,
2945                                                        (struct cq_req *)hw_cqe,
2946                                                        &cqe, &budget,
2947                                                        sw_cons, lib_qp);
2948                         break;
2949                 case CQ_BASE_CQE_TYPE_RES_RC:
2950                         rc = bnxt_qplib_cq_process_res_rc(cq,
2951                                                           (struct cq_res_rc *)
2952                                                           hw_cqe, &cqe,
2953                                                           &budget);
2954                         break;
2955                 case CQ_BASE_CQE_TYPE_RES_UD:
2956                         rc = bnxt_qplib_cq_process_res_ud
2957                                         (cq, (struct cq_res_ud *)hw_cqe, &cqe,
2958                                          &budget);
2959                         break;
2960                 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
2961                         rc = bnxt_qplib_cq_process_res_raweth_qp1
2962                                         (cq, (struct cq_res_raweth_qp1 *)
2963                                          hw_cqe, &cqe, &budget);
2964                         break;
2965                 case CQ_BASE_CQE_TYPE_TERMINAL:
2966                         rc = bnxt_qplib_cq_process_terminal
2967                                         (cq, (struct cq_terminal *)hw_cqe,
2968                                          &cqe, &budget);
2969                         break;
2970                 case CQ_BASE_CQE_TYPE_CUT_OFF:
2971                         bnxt_qplib_cq_process_cutoff
2972                                         (cq, (struct cq_cutoff *)hw_cqe);
2973                         /* Done processing this CQ */
2974                         goto exit;
2975                 default:
2976                         dev_err(&cq->hwq.pdev->dev,
2977                                 "process_cq unknown type 0x%lx\n",
2978                                 hw_cqe->cqe_type_toggle &
2979                                 CQ_BASE_CQE_TYPE_MASK);
2980                         rc = -EINVAL;
2981                         break;
2982                 }
2983                 if (rc < 0) {
2984                         if (rc == -EAGAIN)
2985                                 break;
2986                         /* Error while processing the CQE, just skip to the
2987                          * next one
2988                          */
2989                         if (type != CQ_BASE_CQE_TYPE_TERMINAL)
2990                                 dev_err(&cq->hwq.pdev->dev,
2991                                         "process_cqe error rc = 0x%x\n", rc);
2992                 }
2993                 raw_cons++;
2994         }
2995         if (cq->hwq.cons != raw_cons) {
2996                 cq->hwq.cons = raw_cons;
2997                 bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
2998         }
2999 exit:
3000         return num_cqes - budget;
3001 }
3002
3003 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
3004 {
3005         if (arm_type)
3006                 bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
3007         /* Using cq->arm_state variable to track whether to issue cq handler */
3008         atomic_set(&cq->arm_state, 1);
3009 }
3010
3011 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
3012 {
3013         flush_workqueue(qp->scq->nq->cqn_wq);
3014         if (qp->scq != qp->rcq)
3015                 flush_workqueue(qp->rcq->nq->cqn_wq);
3016 }