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 #include <linux/interrupt.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/sched.h>
  42 #include <linux/slab.h>
  43 #include <linux/pci.h>
  44 #include <linux/prefetch.h>
  45
  46 #include "roce_hsi.h"
  47
  48 #include "qplib_res.h"
  49 #include "qplib_rcfw.h"
  50 #include "qplib_sp.h"
  51 #include "qplib_fp.h"
  52
  53 static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq);
  54 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);
  55 static void bnxt_qplib_arm_srq(struct bnxt_qplib_srq *srq, u32 arm_type);
  56
  57 static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
  58 {
  59         qp->sq.condition = false;
  60         qp->sq.send_phantom = false;
  61         qp->sq.single = false;
  62 }
  63
  64 /* Flush list */
  65 static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
  66 {
  67         struct bnxt_qplib_cq *scq, *rcq;
  68
  69         scq = qp->scq;
  70         rcq = qp->rcq;
  71
  72         if (!qp->sq.flushed) {
  73                 dev_dbg(&scq->hwq.pdev->dev,
  74                         "QPLIB: FP: Adding to SQ Flush list = %p",
  75                         qp);
  76                 bnxt_qplib_cancel_phantom_processing(qp);
  77                 list_add_tail(&qp->sq_flush, &scq->sqf_head);
  78                 qp->sq.flushed = true;
  79         }
  80         if (!qp->srq) {
  81                 if (!qp->rq.flushed) {
  82                         dev_dbg(&rcq->hwq.pdev->dev,
  83                                 "QPLIB: FP: Adding to RQ Flush list = %p",
  84                                 qp);
  85                         list_add_tail(&qp->rq_flush, &rcq->rqf_head);
  86                         qp->rq.flushed = true;
  87                 }
  88         }
  89 }
  90
  91 void bnxt_qplib_acquire_cq_locks(struct bnxt_qplib_qp *qp,
  92                                  unsigned long *flags)
  93         __acquires(&qp->scq->hwq.lock) __acquires(&qp->rcq->hwq.lock)
  94 {
  95         spin_lock_irqsave(&qp->scq->hwq.lock, *flags);
  96         if (qp->scq == qp->rcq)
  97                 __acquire(&qp->rcq->hwq.lock);
  98         else
  99                 spin_lock(&qp->rcq->hwq.lock);
 100 }
 101
 102 void bnxt_qplib_release_cq_locks(struct bnxt_qplib_qp *qp,
 103                                  unsigned long *flags)
 104         __releases(&qp->scq->hwq.lock) __releases(&qp->rcq->hwq.lock)
 105 {
 106         if (qp->scq == qp->rcq)
 107                 __release(&qp->rcq->hwq.lock);
 108         else
 109                 spin_unlock(&qp->rcq->hwq.lock);
 110         spin_unlock_irqrestore(&qp->scq->hwq.lock, *flags);
 111 }
 112
 113 static struct bnxt_qplib_cq *bnxt_qplib_find_buddy_cq(struct bnxt_qplib_qp *qp,
 114                                                       struct bnxt_qplib_cq *cq)
 115 {
 116         struct bnxt_qplib_cq *buddy_cq = NULL;
 117
 118         if (qp->scq == qp->rcq)
 119                 buddy_cq = NULL;
 120         else if (qp->scq == cq)
 121                 buddy_cq = qp->rcq;
 122         else
 123                 buddy_cq = qp->scq;
 124         return buddy_cq;
 125 }
 126
 127 static void bnxt_qplib_lock_buddy_cq(struct bnxt_qplib_qp *qp,
 128                                      struct bnxt_qplib_cq *cq)
 129         __acquires(&buddy_cq->hwq.lock)
 130 {
 131         struct bnxt_qplib_cq *buddy_cq = NULL;
 132
 133         buddy_cq = bnxt_qplib_find_buddy_cq(qp, cq);
 134         if (!buddy_cq)
 135                 __acquire(&cq->hwq.lock);
 136         else
 137                 spin_lock(&buddy_cq->hwq.lock);
 138 }
 139
 140 static void bnxt_qplib_unlock_buddy_cq(struct bnxt_qplib_qp *qp,
 141                                        struct bnxt_qplib_cq *cq)
 142         __releases(&buddy_cq->hwq.lock)
 143 {
 144         struct bnxt_qplib_cq *buddy_cq = NULL;
 145
 146         buddy_cq = bnxt_qplib_find_buddy_cq(qp, cq);
 147         if (!buddy_cq)
 148                 __release(&cq->hwq.lock);
 149         else
 150                 spin_unlock(&buddy_cq->hwq.lock);
 151 }
 152
 153 void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
 154 {
 155         unsigned long flags;
 156
 157         bnxt_qplib_acquire_cq_locks(qp, &flags);
 158         __bnxt_qplib_add_flush_qp(qp);
 159         bnxt_qplib_release_cq_locks(qp, &flags);
 160 }
 161
 162 static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
 163 {
 164         if (qp->sq.flushed) {
 165                 qp->sq.flushed = false;
 166                 list_del(&qp->sq_flush);
 167         }
 168         if (!qp->srq) {
 169                 if (qp->rq.flushed) {
 170                         qp->rq.flushed = false;
 171                         list_del(&qp->rq_flush);
 172                 }
 173         }
 174 }
 175
 176 void bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
 177 {
 178         unsigned long flags;
 179
 180         bnxt_qplib_acquire_cq_locks(qp, &flags);
 181         __clean_cq(qp->scq, (u64)(unsigned long)qp);
 182         qp->sq.hwq.prod = 0;
 183         qp->sq.hwq.cons = 0;
 184         __clean_cq(qp->rcq, (u64)(unsigned long)qp);
 185         qp->rq.hwq.prod = 0;
 186         qp->rq.hwq.cons = 0;
 187
 188         __bnxt_qplib_del_flush_qp(qp);
 189         bnxt_qplib_release_cq_locks(qp, &flags);
 190 }
 191
 192 static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
 193 {
 194         struct bnxt_qplib_nq_work *nq_work =
 195                         container_of(work, struct bnxt_qplib_nq_work, work);
 196
 197         struct bnxt_qplib_cq *cq = nq_work->cq;
 198         struct bnxt_qplib_nq *nq = nq_work->nq;
 199
 200         if (cq && nq) {
 201                 spin_lock_bh(&cq->compl_lock);
 202                 if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
 203                         dev_dbg(&nq->pdev->dev,
 204                                 "%s:Trigger cq  = %p event nq = %p\n",
 205                                 __func__, cq, nq);
 206                         nq->cqn_handler(nq, cq);
 207                 }
 208                 spin_unlock_bh(&cq->compl_lock);
 209         }
 210         kfree(nq_work);
 211 }
 212
 213 static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
 214                                        struct bnxt_qplib_qp *qp)
 215 {
 216         struct bnxt_qplib_q *rq = &qp->rq;
 217         struct bnxt_qplib_q *sq = &qp->sq;
 218
 219         if (qp->rq_hdr_buf)
 220                 dma_free_coherent(&res->pdev->dev,
 221                                   rq->hwq.max_elements * qp->rq_hdr_buf_size,
 222                                   qp->rq_hdr_buf, qp->rq_hdr_buf_map);
 223         if (qp->sq_hdr_buf)
 224                 dma_free_coherent(&res->pdev->dev,
 225                                   sq->hwq.max_elements * qp->sq_hdr_buf_size,
 226                                   qp->sq_hdr_buf, qp->sq_hdr_buf_map);
 227         qp->rq_hdr_buf = NULL;
 228         qp->sq_hdr_buf = NULL;
 229         qp->rq_hdr_buf_map = 0;
 230         qp->sq_hdr_buf_map = 0;
 231         qp->sq_hdr_buf_size = 0;
 232         qp->rq_hdr_buf_size = 0;
 233 }
 234
 235 static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
 236                                        struct bnxt_qplib_qp *qp)
 237 {
 238         struct bnxt_qplib_q *rq = &qp->rq;
 239         struct bnxt_qplib_q *sq = &qp->rq;
 240         int rc = 0;
 241
 242         if (qp->sq_hdr_buf_size && sq->hwq.max_elements) {
 243                 qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
 244                                         sq->hwq.max_elements *
 245                                         qp->sq_hdr_buf_size,
 246                                         &qp->sq_hdr_buf_map, GFP_KERNEL);
 247                 if (!qp->sq_hdr_buf) {
 248                         rc = -ENOMEM;
 249                         dev_err(&res->pdev->dev,
 250                                 "QPLIB: Failed to create sq_hdr_buf");
 251                         goto fail;
 252                 }
 253         }
 254
 255         if (qp->rq_hdr_buf_size && rq->hwq.max_elements) {
 256                 qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
 257                                                     rq->hwq.max_elements *
 258                                                     qp->rq_hdr_buf_size,
 259                                                     &qp->rq_hdr_buf_map,
 260                                                     GFP_KERNEL);
 261                 if (!qp->rq_hdr_buf) {
 262                         rc = -ENOMEM;
 263                         dev_err(&res->pdev->dev,
 264                                 "QPLIB: Failed to create rq_hdr_buf");
 265                         goto fail;
 266                 }
 267         }
 268         return 0;
 269
 270 fail:
 271         bnxt_qplib_free_qp_hdr_buf(res, qp);
 272         return rc;
 273 }
 274
 275 static void bnxt_qplib_service_nq(unsigned long data)
 276 {
 277         struct bnxt_qplib_nq *nq = (struct bnxt_qplib_nq *)data;
 278         struct bnxt_qplib_hwq *hwq = &nq->hwq;
 279         struct nq_base *nqe, **nq_ptr;
 280         struct bnxt_qplib_cq *cq;
 281         int num_cqne_processed = 0;
 282         int num_srqne_processed = 0;
 283         u32 sw_cons, raw_cons;
 284         u16 type;
 285         int budget = nq->budget;
 286         u64 q_handle;
 287
 288         /* Service the NQ until empty */
 289         raw_cons = hwq->cons;
 290         while (budget--) {
 291                 sw_cons = HWQ_CMP(raw_cons, hwq);
 292                 nq_ptr = (struct nq_base **)hwq->pbl_ptr;
 293                 nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)];
 294                 if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
 295                         break;
 296
 297                 /*
 298                  * The valid test of the entry must be done first before
 299                  * reading any further.
 300                  */
 301                 dma_rmb();
 302
 303                 type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
 304                 switch (type) {
 305                 case NQ_BASE_TYPE_CQ_NOTIFICATION:
 306                 {
 307                         struct nq_cn *nqcne = (struct nq_cn *)nqe;
 308
 309                         q_handle = le32_to_cpu(nqcne->cq_handle_low);
 310                         q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
 311                                                      << 32;
 312                         cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
 313                         bnxt_qplib_arm_cq_enable(cq);
 314                         spin_lock_bh(&cq->compl_lock);
 315                         atomic_set(&cq->arm_state, 0);
 316                         if (!nq->cqn_handler(nq, (cq)))
 317                                 num_cqne_processed++;
 318                         else
 319                                 dev_warn(&nq->pdev->dev,
 320                                          "QPLIB: cqn - type 0x%x not handled",
 321                                          type);
 322                         spin_unlock_bh(&cq->compl_lock);
 323                         break;
 324                 }
 325                 case NQ_BASE_TYPE_SRQ_EVENT:
 326                 {
 327                         struct nq_srq_event *nqsrqe =
 328                                                 (struct nq_srq_event *)nqe;
 329
 330                         q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
 331                         q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
 332                                      << 32;
 333                         bnxt_qplib_arm_srq((struct bnxt_qplib_srq *)q_handle,
 334                                            DBR_DBR_TYPE_SRQ_ARMENA);
 335                         if (!nq->srqn_handler(nq,
 336                                               (struct bnxt_qplib_srq *)q_handle,
 337                                               nqsrqe->event))
 338                                 num_srqne_processed++;
 339                         else
 340                                 dev_warn(&nq->pdev->dev,
 341                                          "QPLIB: SRQ event 0x%x not handled",
 342                                          nqsrqe->event);
 343                         break;
 344                 }
 345                 case NQ_BASE_TYPE_DBQ_EVENT:
 346                         break;
 347                 default:
 348                         dev_warn(&nq->pdev->dev,
 349                                  "QPLIB: nqe with type = 0x%x not handled",
 350                                  type);
 351                         break;
 352                 }
 353                 raw_cons++;
 354         }
 355         if (hwq->cons != raw_cons) {
 356                 hwq->cons = raw_cons;
 357                 NQ_DB_REARM(nq->bar_reg_iomem, hwq->cons, hwq->max_elements);
 358         }
 359 }
 360
 361 static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
 362 {
 363         struct bnxt_qplib_nq *nq = dev_instance;
 364         struct bnxt_qplib_hwq *hwq = &nq->hwq;
 365         struct nq_base **nq_ptr;
 366         u32 sw_cons;
 367
 368         /* Prefetch the NQ element */
 369         sw_cons = HWQ_CMP(hwq->cons, hwq);
 370         nq_ptr = (struct nq_base **)nq->hwq.pbl_ptr;
 371         prefetch(&nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)]);
 372
 373         /* Fan out to CPU affinitized kthreads? */
 374         tasklet_schedule(&nq->worker);
 375
 376         return IRQ_HANDLED;
 377 }
 378
 379 void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
 380 {
 381         if (nq->cqn_wq) {
 382                 destroy_workqueue(nq->cqn_wq);
 383                 nq->cqn_wq = NULL;
 384         }
 385         /* Make sure the HW is stopped! */
 386         synchronize_irq(nq->vector);
 387         tasklet_disable(&nq->worker);
 388         tasklet_kill(&nq->worker);
 389
 390         if (nq->requested) {
 391                 irq_set_affinity_hint(nq->vector, NULL);
 392                 free_irq(nq->vector, nq);
 393                 nq->requested = false;
 394         }
 395         if (nq->bar_reg_iomem)
 396                 iounmap(nq->bar_reg_iomem);
 397         nq->bar_reg_iomem = NULL;
 398
 399         nq->cqn_handler = NULL;
 400         nq->srqn_handler = NULL;
 401         nq->vector = 0;
 402 }
 403
 404 int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
 405                          int nq_idx, int msix_vector, int bar_reg_offset,
 406                          int (*cqn_handler)(struct bnxt_qplib_nq *nq,
 407                                             struct bnxt_qplib_cq *),
 408                          int (*srqn_handler)(struct bnxt_qplib_nq *nq,
 409                                              struct bnxt_qplib_srq *,
 410                                              u8 event))
 411 {
 412         resource_size_t nq_base;
 413         int rc = -1;
 414
 415         nq->pdev = pdev;
 416         nq->vector = msix_vector;
 417         if (cqn_handler)
 418                 nq->cqn_handler = cqn_handler;
 419
 420         if (srqn_handler)
 421                 nq->srqn_handler = srqn_handler;
 422
 423         tasklet_init(&nq->worker, bnxt_qplib_service_nq, (unsigned long)nq);
 424
 425         /* Have a task to schedule CQ notifiers in post send case */
 426         nq->cqn_wq  = create_singlethread_workqueue("bnxt_qplib_nq");
 427         if (!nq->cqn_wq)
 428                 goto fail;
 429
 430         nq->requested = false;
 431         memset(nq->name, 0, 32);
 432         sprintf(nq->name, "bnxt_qplib_nq-%d", nq_idx);
 433         rc = request_irq(nq->vector, bnxt_qplib_nq_irq, 0, nq->name, nq);
 434         if (rc) {
 435                 dev_err(&nq->pdev->dev,
 436                         "Failed to request IRQ for NQ: %#x", rc);
 437                 goto fail;
 438         }
 439
 440         cpumask_clear(&nq->mask);
 441         cpumask_set_cpu(nq_idx, &nq->mask);
 442         rc = irq_set_affinity_hint(nq->vector, &nq->mask);
 443         if (rc) {
 444                 dev_warn(&nq->pdev->dev,
 445                          "QPLIB: set affinity failed; vector: %d nq_idx: %d\n",
 446                          nq->vector, nq_idx);
 447         }
 448
 449         nq->requested = true;
 450         nq->bar_reg = NQ_CONS_PCI_BAR_REGION;
 451         nq->bar_reg_off = bar_reg_offset;
 452         nq_base = pci_resource_start(pdev, nq->bar_reg);
 453         if (!nq_base) {
 454                 rc = -ENOMEM;
 455                 goto fail;
 456         }
 457         nq->bar_reg_iomem = ioremap_nocache(nq_base + nq->bar_reg_off, 4);
 458         if (!nq->bar_reg_iomem) {
 459                 rc = -ENOMEM;
 460                 goto fail;
 461         }
 462         NQ_DB_REARM(nq->bar_reg_iomem, nq->hwq.cons, nq->hwq.max_elements);
 463
 464         return 0;
 465 fail:
 466         bnxt_qplib_disable_nq(nq);
 467         return rc;
 468 }
 469
 470 void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
 471 {
 472         if (nq->hwq.max_elements) {
 473                 bnxt_qplib_free_hwq(nq->pdev, &nq->hwq);
 474                 nq->hwq.max_elements = 0;
 475         }
 476 }
 477
 478 int bnxt_qplib_alloc_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq)
 479 {
 480         nq->pdev = pdev;
 481         if (!nq->hwq.max_elements ||
 482             nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
 483                 nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;
 484
 485         if (bnxt_qplib_alloc_init_hwq(nq->pdev, &nq->hwq, NULL, 0,
 486                                       &nq->hwq.max_elements,
 487                                       BNXT_QPLIB_MAX_NQE_ENTRY_SIZE, 0,
 488                                       PAGE_SIZE, HWQ_TYPE_L2_CMPL))
 489                 return -ENOMEM;
 490
 491         nq->budget = 8;
 492         return 0;
 493 }
 494
 495 /* SRQ */
 496 static void bnxt_qplib_arm_srq(struct bnxt_qplib_srq *srq, u32 arm_type)
 497 {
 498         struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
 499         struct dbr_dbr db_msg = { 0 };
 500         void __iomem *db;
 501         u32 sw_prod = 0;
 502
 503         /* Ring DB */
 504         sw_prod = (arm_type == DBR_DBR_TYPE_SRQ_ARM) ? srq->threshold :
 505                    HWQ_CMP(srq_hwq->prod, srq_hwq);
 506         db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
 507                                    DBR_DBR_INDEX_MASK);
 508         db_msg.type_xid = cpu_to_le32(((srq->id << DBR_DBR_XID_SFT) &
 509                                         DBR_DBR_XID_MASK) | arm_type);
 510         db = (arm_type == DBR_DBR_TYPE_SRQ_ARMENA) ?
 511                 srq->dbr_base : srq->dpi->dbr;
 512         wmb(); /* barrier before db ring */
 513         __iowrite64_copy(db, &db_msg, sizeof(db_msg) / sizeof(u64));
 514 }
 515
 516 int bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
 517                            struct bnxt_qplib_srq *srq)
 518 {
 519         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 520         struct cmdq_destroy_srq req;
 521         struct creq_destroy_srq_resp resp;
 522         u16 cmd_flags = 0;
 523         int rc;
 524
 525         RCFW_CMD_PREP(req, DESTROY_SRQ, cmd_flags);
 526
 527         /* Configure the request */
 528         req.srq_cid = cpu_to_le32(srq->id);
 529
 530         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 531                                           (void *)&resp, NULL, 0);
 532         if (rc)
 533                 return rc;
 534
 535         bnxt_qplib_free_hwq(res->pdev, &srq->hwq);
 536         kfree(srq->swq);
 537         return 0;
 538 }
 539
 540 int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
 541                           struct bnxt_qplib_srq *srq)
 542 {
 543         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 544         struct cmdq_create_srq req;
 545         struct creq_create_srq_resp resp;
 546         struct bnxt_qplib_pbl *pbl;
 547         u16 cmd_flags = 0;
 548         int rc, idx;
 549
 550         srq->hwq.max_elements = srq->max_wqe;
 551         rc = bnxt_qplib_alloc_init_hwq(res->pdev, &srq->hwq, srq->sglist,
 552                                        srq->nmap, &srq->hwq.max_elements,
 553                                        BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
 554                                        PAGE_SIZE, HWQ_TYPE_QUEUE);
 555         if (rc)
 556                 goto exit;
 557
 558         srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
 559                            GFP_KERNEL);
 560         if (!srq->swq)
 561                 goto fail;
 562
 563         RCFW_CMD_PREP(req, CREATE_SRQ, cmd_flags);
 564
 565         /* Configure the request */
 566         req.dpi = cpu_to_le32(srq->dpi->dpi);
 567         req.srq_handle = cpu_to_le64(srq);
 568
 569         req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
 570         pbl = &srq->hwq.pbl[PBL_LVL_0];
 571         req.pg_size_lvl = cpu_to_le16((((u16)srq->hwq.level &
 572                                       CMDQ_CREATE_SRQ_LVL_MASK) <<
 573                                       CMDQ_CREATE_SRQ_LVL_SFT) |
 574                                       (pbl->pg_size == ROCE_PG_SIZE_4K ?
 575                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_4K :
 576                                        pbl->pg_size == ROCE_PG_SIZE_8K ?
 577                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_8K :
 578                                        pbl->pg_size == ROCE_PG_SIZE_64K ?
 579                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_64K :
 580                                        pbl->pg_size == ROCE_PG_SIZE_2M ?
 581                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_2M :
 582                                        pbl->pg_size == ROCE_PG_SIZE_8M ?
 583                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_8M :
 584                                        pbl->pg_size == ROCE_PG_SIZE_1G ?
 585                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_1G :
 586                                        CMDQ_CREATE_SRQ_PG_SIZE_PG_4K));
 587         req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 588         req.pd_id = cpu_to_le32(srq->pd->id);
 589         req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);
 590
 591         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 592                                           (void *)&resp, NULL, 0);
 593         if (rc)
 594                 goto fail;
 595
 596         spin_lock_init(&srq->lock);
 597         srq->start_idx = 0;
 598         srq->last_idx = srq->hwq.max_elements - 1;
 599         for (idx = 0; idx < srq->hwq.max_elements; idx++)
 600                 srq->swq[idx].next_idx = idx + 1;
 601         srq->swq[srq->last_idx].next_idx = -1;
 602
 603         srq->id = le32_to_cpu(resp.xid);
 604         srq->dbr_base = res->dpi_tbl.dbr_bar_reg_iomem;
 605         if (srq->threshold)
 606                 bnxt_qplib_arm_srq(srq, DBR_DBR_TYPE_SRQ_ARMENA);
 607         srq->arm_req = false;
 608
 609         return 0;
 610 fail:
 611         bnxt_qplib_free_hwq(res->pdev, &srq->hwq);
 612         kfree(srq->swq);
 613 exit:
 614         return rc;
 615 }
 616
 617 int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
 618                           struct bnxt_qplib_srq *srq)
 619 {
 620         struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
 621         u32 sw_prod, sw_cons, count = 0;
 622
 623         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 624         sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);
 625
 626         count = sw_prod > sw_cons ? sw_prod - sw_cons :
 627                                     srq_hwq->max_elements - sw_cons + sw_prod;
 628         if (count > srq->threshold) {
 629                 srq->arm_req = false;
 630                 bnxt_qplib_arm_srq(srq, DBR_DBR_TYPE_SRQ_ARM);
 631         } else {
 632                 /* Deferred arming */
 633                 srq->arm_req = true;
 634         }
 635
 636         return 0;
 637 }
 638
 639 int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
 640                          struct bnxt_qplib_srq *srq)
 641 {
 642         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 643         struct cmdq_query_srq req;
 644         struct creq_query_srq_resp resp;
 645         struct bnxt_qplib_rcfw_sbuf *sbuf;
 646         struct creq_query_srq_resp_sb *sb;
 647         u16 cmd_flags = 0;
 648         int rc = 0;
 649
 650         RCFW_CMD_PREP(req, QUERY_SRQ, cmd_flags);
 651         req.srq_cid = cpu_to_le32(srq->id);
 652
 653         /* Configure the request */
 654         sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
 655         if (!sbuf)
 656                 return -ENOMEM;
 657         sb = sbuf->sb;
 658         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
 659                                           (void *)sbuf, 0);
 660         srq->threshold = le16_to_cpu(sb->srq_limit);
 661         bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
 662
 663         return rc;
 664 }
 665
 666 int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
 667                              struct bnxt_qplib_swqe *wqe)
 668 {
 669         struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
 670         struct rq_wqe *srqe, **srqe_ptr;
 671         struct sq_sge *hw_sge;
 672         u32 sw_prod, sw_cons, count = 0;
 673         int i, rc = 0, next;
 674
 675         spin_lock(&srq_hwq->lock);
 676         if (srq->start_idx == srq->last_idx) {
 677                 dev_err(&srq_hwq->pdev->dev, "QPLIB: FP: SRQ (0x%x) is full!",
 678                         srq->id);
 679                 rc = -EINVAL;
 680                 spin_unlock(&srq_hwq->lock);
 681                 goto done;
 682         }
 683         next = srq->start_idx;
 684         srq->start_idx = srq->swq[next].next_idx;
 685         spin_unlock(&srq_hwq->lock);
 686
 687         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 688         srqe_ptr = (struct rq_wqe **)srq_hwq->pbl_ptr;
 689         srqe = &srqe_ptr[RQE_PG(sw_prod)][RQE_IDX(sw_prod)];
 690         memset(srqe, 0, BNXT_QPLIB_MAX_RQE_ENTRY_SIZE);
 691         /* Calculate wqe_size16 and data_len */
 692         for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
 693              i < wqe->num_sge; i++, hw_sge++) {
 694                 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
 695                 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
 696                 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
 697         }
 698         srqe->wqe_type = wqe->type;
 699         srqe->flags = wqe->flags;
 700         srqe->wqe_size = wqe->num_sge +
 701                         ((offsetof(typeof(*srqe), data) + 15) >> 4);
 702         srqe->wr_id[0] = cpu_to_le32((u32)next);
 703         srq->swq[next].wr_id = wqe->wr_id;
 704
 705         srq_hwq->prod++;
 706
 707         spin_lock(&srq_hwq->lock);
 708         sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
 709         /* retaining srq_hwq->cons for this logic
 710          * actually the lock is only required to
 711          * read srq_hwq->cons.
 712          */
 713         sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);
 714         count = sw_prod > sw_cons ? sw_prod - sw_cons :
 715                                     srq_hwq->max_elements - sw_cons + sw_prod;
 716         spin_unlock(&srq_hwq->lock);
 717         /* Ring DB */
 718         bnxt_qplib_arm_srq(srq, DBR_DBR_TYPE_SRQ);
 719         if (srq->arm_req == true && count > srq->threshold) {
 720                 srq->arm_req = false;
 721                 bnxt_qplib_arm_srq(srq, DBR_DBR_TYPE_SRQ_ARM);
 722         }
 723 done:
 724         return rc;
 725 }
 726
 727 /* QP */
 728 int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 729 {
 730         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 731         struct cmdq_create_qp1 req;
 732         struct creq_create_qp1_resp resp;
 733         struct bnxt_qplib_pbl *pbl;
 734         struct bnxt_qplib_q *sq = &qp->sq;
 735         struct bnxt_qplib_q *rq = &qp->rq;
 736         int rc;
 737         u16 cmd_flags = 0;
 738         u32 qp_flags = 0;
 739
 740         RCFW_CMD_PREP(req, CREATE_QP1, cmd_flags);
 741
 742         /* General */
 743         req.type = qp->type;
 744         req.dpi = cpu_to_le32(qp->dpi->dpi);
 745         req.qp_handle = cpu_to_le64(qp->qp_handle);
 746
 747         /* SQ */
 748         sq->hwq.max_elements = sq->max_wqe;
 749         rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, NULL, 0,
 750                                        &sq->hwq.max_elements,
 751                                        BNXT_QPLIB_MAX_SQE_ENTRY_SIZE, 0,
 752                                        PAGE_SIZE, HWQ_TYPE_QUEUE);
 753         if (rc)
 754                 goto exit;
 755
 756         sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
 757         if (!sq->swq) {
 758                 rc = -ENOMEM;
 759                 goto fail_sq;
 760         }
 761         pbl = &sq->hwq.pbl[PBL_LVL_0];
 762         req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 763         req.sq_pg_size_sq_lvl =
 764                 ((sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK)
 765                                 <<  CMDQ_CREATE_QP1_SQ_LVL_SFT) |
 766                 (pbl->pg_size == ROCE_PG_SIZE_4K ?
 767                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K :
 768                  pbl->pg_size == ROCE_PG_SIZE_8K ?
 769                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8K :
 770                  pbl->pg_size == ROCE_PG_SIZE_64K ?
 771                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_64K :
 772                  pbl->pg_size == ROCE_PG_SIZE_2M ?
 773                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_2M :
 774                  pbl->pg_size == ROCE_PG_SIZE_8M ?
 775                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8M :
 776                  pbl->pg_size == ROCE_PG_SIZE_1G ?
 777                                 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_1G :
 778                  CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K);
 779
 780         if (qp->scq)
 781                 req.scq_cid = cpu_to_le32(qp->scq->id);
 782
 783         qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
 784
 785         /* RQ */
 786         if (rq->max_wqe) {
 787                 rq->hwq.max_elements = qp->rq.max_wqe;
 788                 rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, NULL, 0,
 789                                                &rq->hwq.max_elements,
 790                                                BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
 791                                                PAGE_SIZE, HWQ_TYPE_QUEUE);
 792                 if (rc)
 793                         goto fail_sq;
 794
 795                 rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
 796                                   GFP_KERNEL);
 797                 if (!rq->swq) {
 798                         rc = -ENOMEM;
 799                         goto fail_rq;
 800                 }
 801                 pbl = &rq->hwq.pbl[PBL_LVL_0];
 802                 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 803                 req.rq_pg_size_rq_lvl =
 804                         ((rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK) <<
 805                          CMDQ_CREATE_QP1_RQ_LVL_SFT) |
 806                                 (pbl->pg_size == ROCE_PG_SIZE_4K ?
 807                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K :
 808                                  pbl->pg_size == ROCE_PG_SIZE_8K ?
 809                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8K :
 810                                  pbl->pg_size == ROCE_PG_SIZE_64K ?
 811                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_64K :
 812                                  pbl->pg_size == ROCE_PG_SIZE_2M ?
 813                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_2M :
 814                                  pbl->pg_size == ROCE_PG_SIZE_8M ?
 815                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8M :
 816                                  pbl->pg_size == ROCE_PG_SIZE_1G ?
 817                                         CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_1G :
 818                                  CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K);
 819                 if (qp->rcq)
 820                         req.rcq_cid = cpu_to_le32(qp->rcq->id);
 821         }
 822
 823         /* Header buffer - allow hdr_buf pass in */
 824         rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
 825         if (rc) {
 826                 rc = -ENOMEM;
 827                 goto fail;
 828         }
 829         req.qp_flags = cpu_to_le32(qp_flags);
 830         req.sq_size = cpu_to_le32(sq->hwq.max_elements);
 831         req.rq_size = cpu_to_le32(rq->hwq.max_elements);
 832
 833         req.sq_fwo_sq_sge =
 834                 cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
 835                             CMDQ_CREATE_QP1_SQ_SGE_SFT);
 836         req.rq_fwo_rq_sge =
 837                 cpu_to_le16((rq->max_sge & CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
 838                             CMDQ_CREATE_QP1_RQ_SGE_SFT);
 839
 840         req.pd_id = cpu_to_le32(qp->pd->id);
 841
 842         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
 843                                           (void *)&resp, NULL, 0);
 844         if (rc)
 845                 goto fail;
 846
 847         qp->id = le32_to_cpu(resp.xid);
 848         qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
 849         rcfw->qp_tbl[qp->id].qp_id = qp->id;
 850         rcfw->qp_tbl[qp->id].qp_handle = (void *)qp;
 851
 852         return 0;
 853
 854 fail:
 855         bnxt_qplib_free_qp_hdr_buf(res, qp);
 856 fail_rq:
 857         bnxt_qplib_free_hwq(res->pdev, &rq->hwq);
 858         kfree(rq->swq);
 859 fail_sq:
 860         bnxt_qplib_free_hwq(res->pdev, &sq->hwq);
 861         kfree(sq->swq);
 862 exit:
 863         return rc;
 864 }
 865
 866 int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
 867 {
 868         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
 869         struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
 870         struct cmdq_create_qp req;
 871         struct creq_create_qp_resp resp;
 872         struct bnxt_qplib_pbl *pbl;
 873         struct sq_psn_search **psn_search_ptr;
 874         unsigned long int psn_search, poff = 0;
 875         struct bnxt_qplib_q *sq = &qp->sq;
 876         struct bnxt_qplib_q *rq = &qp->rq;
 877         struct bnxt_qplib_hwq *xrrq;
 878         int i, rc, req_size, psn_sz;
 879         u16 cmd_flags = 0, max_ssge;
 880         u32 sw_prod, qp_flags = 0;
 881
 882         RCFW_CMD_PREP(req, CREATE_QP, cmd_flags);
 883
 884         /* General */
 885         req.type = qp->type;
 886         req.dpi = cpu_to_le32(qp->dpi->dpi);
 887         req.qp_handle = cpu_to_le64(qp->qp_handle);
 888
 889         /* SQ */
 890         psn_sz = (qp->type == CMDQ_CREATE_QP_TYPE_RC) ?
 891                  sizeof(struct sq_psn_search) : 0;
 892         sq->hwq.max_elements = sq->max_wqe;
 893         rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, sq->sglist,
 894                                        sq->nmap, &sq->hwq.max_elements,
 895                                        BNXT_QPLIB_MAX_SQE_ENTRY_SIZE,
 896                                        psn_sz,
 897                                        PAGE_SIZE, HWQ_TYPE_QUEUE);
 898         if (rc)
 899                 goto exit;
 900
 901         sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
 902         if (!sq->swq) {
 903                 rc = -ENOMEM;
 904                 goto fail_sq;
 905         }
 906         hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
 907         if (psn_sz) {
 908                 psn_search_ptr = (struct sq_psn_search **)
 909                                   &hw_sq_send_ptr[get_sqe_pg
 910                                         (sq->hwq.max_elements)];
 911                 psn_search = (unsigned long int)
 912                               &hw_sq_send_ptr[get_sqe_pg(sq->hwq.max_elements)]
 913                               [get_sqe_idx(sq->hwq.max_elements)];
 914                 if (psn_search & ~PAGE_MASK) {
 915                         /* If the psn_search does not start on a page boundary,
 916                          * then calculate the offset
 917                          */
 918                         poff = (psn_search & ~PAGE_MASK) /
 919                                 BNXT_QPLIB_MAX_PSNE_ENTRY_SIZE;
 920                 }
 921                 for (i = 0; i < sq->hwq.max_elements; i++)
 922                         sq->swq[i].psn_search =
 923                                 &psn_search_ptr[get_psne_pg(i + poff)]
 924                                                [get_psne_idx(i + poff)];
 925         }
 926         pbl = &sq->hwq.pbl[PBL_LVL_0];
 927         req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 928         req.sq_pg_size_sq_lvl =
 929                 ((sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK)
 930                                  <<  CMDQ_CREATE_QP_SQ_LVL_SFT) |
 931                 (pbl->pg_size == ROCE_PG_SIZE_4K ?
 932                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K :
 933                  pbl->pg_size == ROCE_PG_SIZE_8K ?
 934                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8K :
 935                  pbl->pg_size == ROCE_PG_SIZE_64K ?
 936                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_64K :
 937                  pbl->pg_size == ROCE_PG_SIZE_2M ?
 938                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_2M :
 939                  pbl->pg_size == ROCE_PG_SIZE_8M ?
 940                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8M :
 941                  pbl->pg_size == ROCE_PG_SIZE_1G ?
 942                                 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_1G :
 943                  CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K);
 944
 945         /* initialize all SQ WQEs to LOCAL_INVALID (sq prep for hw fetch) */
 946         hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
 947         for (sw_prod = 0; sw_prod < sq->hwq.max_elements; sw_prod++) {
 948                 hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
 949                                                 [get_sqe_idx(sw_prod)];
 950                 hw_sq_send_hdr->wqe_type = SQ_BASE_WQE_TYPE_LOCAL_INVALID;
 951         }
 952
 953         if (qp->scq)
 954                 req.scq_cid = cpu_to_le32(qp->scq->id);
 955
 956         qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
 957         qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
 958         if (qp->sig_type)
 959                 qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
 960
 961         /* RQ */
 962         if (rq->max_wqe) {
 963                 rq->hwq.max_elements = rq->max_wqe;
 964                 rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, rq->sglist,
 965                                                rq->nmap, &rq->hwq.max_elements,
 966                                                BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
 967                                                PAGE_SIZE, HWQ_TYPE_QUEUE);
 968                 if (rc)
 969                         goto fail_sq;
 970
 971                 rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
 972                                   GFP_KERNEL);
 973                 if (!rq->swq) {
 974                         rc = -ENOMEM;
 975                         goto fail_rq;
 976                 }
 977                 pbl = &rq->hwq.pbl[PBL_LVL_0];
 978                 req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
 979                 req.rq_pg_size_rq_lvl =
 980                         ((rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK) <<
 981                          CMDQ_CREATE_QP_RQ_LVL_SFT) |
 982                                 (pbl->pg_size == ROCE_PG_SIZE_4K ?
 983                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K :
 984                                  pbl->pg_size == ROCE_PG_SIZE_8K ?
 985                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8K :
 986                                  pbl->pg_size == ROCE_PG_SIZE_64K ?
 987                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_64K :
 988                                  pbl->pg_size == ROCE_PG_SIZE_2M ?
 989                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_2M :
 990                                  pbl->pg_size == ROCE_PG_SIZE_8M ?
 991                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8M :
 992                                  pbl->pg_size == ROCE_PG_SIZE_1G ?
 993                                         CMDQ_CREATE_QP_RQ_PG_SIZE_PG_1G :
 994                                  CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K);
 995         } else {
 996                 /* SRQ */
 997                 if (qp->srq) {
 998                         qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
 999                         req.srq_cid = cpu_to_le32(qp->srq->id);
1000                 }
1001         }
1002
1003         if (qp->rcq)
1004                 req.rcq_cid = cpu_to_le32(qp->rcq->id);
1005         req.qp_flags = cpu_to_le32(qp_flags);
1006         req.sq_size = cpu_to_le32(sq->hwq.max_elements);
1007         req.rq_size = cpu_to_le32(rq->hwq.max_elements);
1008         qp->sq_hdr_buf = NULL;
1009         qp->rq_hdr_buf = NULL;
1010
1011         rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
1012         if (rc)
1013                 goto fail_rq;
1014
1015         /* CTRL-22434: Irrespective of the requested SGE count on the SQ
1016          * always create the QP with max send sges possible if the requested
1017          * inline size is greater than 0.
1018          */
1019         max_ssge = qp->max_inline_data ? 6 : sq->max_sge;
1020         req.sq_fwo_sq_sge = cpu_to_le16(
1021                                 ((max_ssge & CMDQ_CREATE_QP_SQ_SGE_MASK)
1022                                  << CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
1023         req.rq_fwo_rq_sge = cpu_to_le16(
1024                                 ((rq->max_sge & CMDQ_CREATE_QP_RQ_SGE_MASK)
1025                                  << CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
1026         /* ORRQ and IRRQ */
1027         if (psn_sz) {
1028                 xrrq = &qp->orrq;
1029                 xrrq->max_elements =
1030                         ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1031                 req_size = xrrq->max_elements *
1032                            BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1033                 req_size &= ~(PAGE_SIZE - 1);
1034                 rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
1035                                                &xrrq->max_elements,
1036                                                BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE,
1037                                                0, req_size, HWQ_TYPE_CTX);
1038                 if (rc)
1039                         goto fail_buf_free;
1040                 pbl = &xrrq->pbl[PBL_LVL_0];
1041                 req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1042
1043                 xrrq = &qp->irrq;
1044                 xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
1045                                                 qp->max_dest_rd_atomic);
1046                 req_size = xrrq->max_elements *
1047                            BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
1048                 req_size &= ~(PAGE_SIZE - 1);
1049
1050                 rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
1051                                                &xrrq->max_elements,
1052                                                BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE,
1053                                                0, req_size, HWQ_TYPE_CTX);
1054                 if (rc)
1055                         goto fail_orrq;
1056
1057                 pbl = &xrrq->pbl[PBL_LVL_0];
1058                 req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
1059         }
1060         req.pd_id = cpu_to_le32(qp->pd->id);
1061
1062         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
1063                                           (void *)&resp, NULL, 0);
1064         if (rc)
1065                 goto fail;
1066
1067         qp->id = le32_to_cpu(resp.xid);
1068         qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
1069         INIT_LIST_HEAD(&qp->sq_flush);
1070         INIT_LIST_HEAD(&qp->rq_flush);
1071         rcfw->qp_tbl[qp->id].qp_id = qp->id;
1072         rcfw->qp_tbl[qp->id].qp_handle = (void *)qp;
1073
1074         return 0;
1075
1076 fail:
1077         if (qp->irrq.max_elements)
1078                 bnxt_qplib_free_hwq(res->pdev, &qp->irrq);
1079 fail_orrq:
1080         if (qp->orrq.max_elements)
1081                 bnxt_qplib_free_hwq(res->pdev, &qp->orrq);
1082 fail_buf_free:
1083         bnxt_qplib_free_qp_hdr_buf(res, qp);
1084 fail_rq:
1085         bnxt_qplib_free_hwq(res->pdev, &rq->hwq);
1086         kfree(rq->swq);
1087 fail_sq:
1088         bnxt_qplib_free_hwq(res->pdev, &sq->hwq);
1089         kfree(sq->swq);
1090 exit:
1091         return rc;
1092 }
1093
1094 static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
1095 {
1096         switch (qp->state) {
1097         case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1098                 /* INIT->RTR, configure the path_mtu to the default
1099                  * 2048 if not being requested
1100                  */
1101                 if (!(qp->modify_flags &
1102                     CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
1103                         qp->modify_flags |=
1104                                 CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
1105                         qp->path_mtu =
1106                                 CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
1107                 }
1108                 qp->modify_flags &=
1109                         ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
1110                 /* Bono FW require the max_dest_rd_atomic to be >= 1 */
1111                 if (qp->max_dest_rd_atomic < 1)
1112                         qp->max_dest_rd_atomic = 1;
1113                 qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
1114                 /* Bono FW 20.6.5 requires SGID_INDEX configuration */
1115                 if (!(qp->modify_flags &
1116                     CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
1117                         qp->modify_flags |=
1118                                 CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
1119                         qp->ah.sgid_index = 0;
1120                 }
1121                 break;
1122         default:
1123                 break;
1124         }
1125 }
1126
1127 static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
1128 {
1129         switch (qp->state) {
1130         case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1131                 /* Bono FW requires the max_rd_atomic to be >= 1 */
1132                 if (qp->max_rd_atomic < 1)
1133                         qp->max_rd_atomic = 1;
1134                 /* Bono FW does not allow PKEY_INDEX,
1135                  * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
1136                  * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
1137                  * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
1138                  * modification
1139                  */
1140                 qp->modify_flags &=
1141                         ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
1142                           CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
1143                           CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
1144                           CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
1145                           CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
1146                           CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
1147                           CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
1148                           CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
1149                           CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
1150                           CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
1151                           CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
1152                           CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
1153                 break;
1154         default:
1155                 break;
1156         }
1157 }
1158
1159 static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
1160 {
1161         switch (qp->cur_qp_state) {
1162         case CMDQ_MODIFY_QP_NEW_STATE_RESET:
1163                 break;
1164         case CMDQ_MODIFY_QP_NEW_STATE_INIT:
1165                 __modify_flags_from_init_state(qp);
1166                 break;
1167         case CMDQ_MODIFY_QP_NEW_STATE_RTR:
1168                 __modify_flags_from_rtr_state(qp);
1169                 break;
1170         case CMDQ_MODIFY_QP_NEW_STATE_RTS:
1171                 break;
1172         case CMDQ_MODIFY_QP_NEW_STATE_SQD:
1173                 break;
1174         case CMDQ_MODIFY_QP_NEW_STATE_SQE:
1175                 break;
1176         case CMDQ_MODIFY_QP_NEW_STATE_ERR:
1177                 break;
1178         default:
1179                 break;
1180         }
1181 }
1182
1183 int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1184 {
1185         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1186         struct cmdq_modify_qp req;
1187         struct creq_modify_qp_resp resp;
1188         u16 cmd_flags = 0, pkey;
1189         u32 temp32[4];
1190         u32 bmask;
1191         int rc;
1192
1193         RCFW_CMD_PREP(req, MODIFY_QP, cmd_flags);
1194
1195         /* Filter out the qp_attr_mask based on the state->new transition */
1196         __filter_modify_flags(qp);
1197         bmask = qp->modify_flags;
1198         req.modify_mask = cpu_to_le32(qp->modify_flags);
1199         req.qp_cid = cpu_to_le32(qp->id);
1200         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
1201                 req.network_type_en_sqd_async_notify_new_state =
1202                                 (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
1203                                 (qp->en_sqd_async_notify ?
1204                                         CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
1205         }
1206         req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;
1207
1208         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
1209                 req.access = qp->access;
1210
1211         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY) {
1212                 if (!bnxt_qplib_get_pkey(res, &res->pkey_tbl,
1213                                          qp->pkey_index, &pkey))
1214                         req.pkey = cpu_to_le16(pkey);
1215         }
1216         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
1217                 req.qkey = cpu_to_le32(qp->qkey);
1218
1219         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
1220                 memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
1221                 req.dgid[0] = cpu_to_le32(temp32[0]);
1222                 req.dgid[1] = cpu_to_le32(temp32[1]);
1223                 req.dgid[2] = cpu_to_le32(temp32[2]);
1224                 req.dgid[3] = cpu_to_le32(temp32[3]);
1225         }
1226         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
1227                 req.flow_label = cpu_to_le32(qp->ah.flow_label);
1228
1229         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
1230                 req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
1231                                              [qp->ah.sgid_index]);
1232
1233         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
1234                 req.hop_limit = qp->ah.hop_limit;
1235
1236         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
1237                 req.traffic_class = qp->ah.traffic_class;
1238
1239         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
1240                 memcpy(req.dest_mac, qp->ah.dmac, 6);
1241
1242         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
1243                 req.path_mtu = qp->path_mtu;
1244
1245         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
1246                 req.timeout = qp->timeout;
1247
1248         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
1249                 req.retry_cnt = qp->retry_cnt;
1250
1251         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
1252                 req.rnr_retry = qp->rnr_retry;
1253
1254         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
1255                 req.min_rnr_timer = qp->min_rnr_timer;
1256
1257         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
1258                 req.rq_psn = cpu_to_le32(qp->rq.psn);
1259
1260         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
1261                 req.sq_psn = cpu_to_le32(qp->sq.psn);
1262
1263         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
1264                 req.max_rd_atomic =
1265                         ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
1266
1267         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
1268                 req.max_dest_rd_atomic =
1269                         IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);
1270
1271         req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
1272         req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
1273         req.sq_sge = cpu_to_le16(qp->sq.max_sge);
1274         req.rq_sge = cpu_to_le16(qp->rq.max_sge);
1275         req.max_inline_data = cpu_to_le32(qp->max_inline_data);
1276         if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
1277                 req.dest_qp_id = cpu_to_le32(qp->dest_qpn);
1278
1279         req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);
1280
1281         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
1282                                           (void *)&resp, NULL, 0);
1283         if (rc)
1284                 return rc;
1285         qp->cur_qp_state = qp->state;
1286         return 0;
1287 }
1288
1289 int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
1290 {
1291         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1292         struct cmdq_query_qp req;
1293         struct creq_query_qp_resp resp;
1294         struct bnxt_qplib_rcfw_sbuf *sbuf;
1295         struct creq_query_qp_resp_sb *sb;
1296         u16 cmd_flags = 0;
1297         u32 temp32[4];
1298         int i, rc = 0;
1299
1300         RCFW_CMD_PREP(req, QUERY_QP, cmd_flags);
1301
1302         sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
1303         if (!sbuf)
1304                 return -ENOMEM;
1305         sb = sbuf->sb;
1306
1307         req.qp_cid = cpu_to_le32(qp->id);
1308         req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
1309         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
1310                                           (void *)sbuf, 0);
1311         if (rc)
1312                 goto bail;
1313         /* Extract the context from the side buffer */
1314         qp->state = sb->en_sqd_async_notify_state &
1315                         CREQ_QUERY_QP_RESP_SB_STATE_MASK;
1316         qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
1317                                   CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ?
1318                                   true : false;
1319         qp->access = sb->access;
1320         qp->pkey_index = le16_to_cpu(sb->pkey);
1321         qp->qkey = le32_to_cpu(sb->qkey);
1322
1323         temp32[0] = le32_to_cpu(sb->dgid[0]);
1324         temp32[1] = le32_to_cpu(sb->dgid[1]);
1325         temp32[2] = le32_to_cpu(sb->dgid[2]);
1326         temp32[3] = le32_to_cpu(sb->dgid[3]);
1327         memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));
1328
1329         qp->ah.flow_label = le32_to_cpu(sb->flow_label);
1330
1331         qp->ah.sgid_index = 0;
1332         for (i = 0; i < res->sgid_tbl.max; i++) {
1333                 if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
1334                         qp->ah.sgid_index = i;
1335                         break;
1336                 }
1337         }
1338         if (i == res->sgid_tbl.max)
1339                 dev_warn(&res->pdev->dev, "QPLIB: SGID not found??");
1340
1341         qp->ah.hop_limit = sb->hop_limit;
1342         qp->ah.traffic_class = sb->traffic_class;
1343         memcpy(qp->ah.dmac, sb->dest_mac, 6);
1344         qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1345                                 CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
1346                                 CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
1347         qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
1348                                     CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
1349                                     CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
1350         qp->timeout = sb->timeout;
1351         qp->retry_cnt = sb->retry_cnt;
1352         qp->rnr_retry = sb->rnr_retry;
1353         qp->min_rnr_timer = sb->min_rnr_timer;
1354         qp->rq.psn = le32_to_cpu(sb->rq_psn);
1355         qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
1356         qp->sq.psn = le32_to_cpu(sb->sq_psn);
1357         qp->max_dest_rd_atomic =
1358                         IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
1359         qp->sq.max_wqe = qp->sq.hwq.max_elements;
1360         qp->rq.max_wqe = qp->rq.hwq.max_elements;
1361         qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
1362         qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
1363         qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
1364         qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
1365         memcpy(qp->smac, sb->src_mac, 6);
1366         qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
1367 bail:
1368         bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
1369         return rc;
1370 }
1371
1372 static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
1373 {
1374         struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1375         struct cq_base *hw_cqe, **hw_cqe_ptr;
1376         int i;
1377
1378         for (i = 0; i < cq_hwq->max_elements; i++) {
1379                 hw_cqe_ptr = (struct cq_base **)cq_hwq->pbl_ptr;
1380                 hw_cqe = &hw_cqe_ptr[CQE_PG(i)][CQE_IDX(i)];
1381                 if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements))
1382                         continue;
1383                 /*
1384                  * The valid test of the entry must be done first before
1385                  * reading any further.
1386                  */
1387                 dma_rmb();
1388                 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
1389                 case CQ_BASE_CQE_TYPE_REQ:
1390                 case CQ_BASE_CQE_TYPE_TERMINAL:
1391                 {
1392                         struct cq_req *cqe = (struct cq_req *)hw_cqe;
1393
1394                         if (qp == le64_to_cpu(cqe->qp_handle))
1395                                 cqe->qp_handle = 0;
1396                         break;
1397                 }
1398                 case CQ_BASE_CQE_TYPE_RES_RC:
1399                 case CQ_BASE_CQE_TYPE_RES_UD:
1400                 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
1401                 {
1402                         struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;
1403
1404                         if (qp == le64_to_cpu(cqe->qp_handle))
1405                                 cqe->qp_handle = 0;
1406                         break;
1407                 }
1408                 default:
1409                         break;
1410                 }
1411         }
1412 }
1413
1414 int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
1415                           struct bnxt_qplib_qp *qp)
1416 {
1417         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1418         struct cmdq_destroy_qp req;
1419         struct creq_destroy_qp_resp resp;
1420         unsigned long flags;
1421         u16 cmd_flags = 0;
1422         int rc;
1423
1424         rcfw->qp_tbl[qp->id].qp_id = BNXT_QPLIB_QP_ID_INVALID;
1425         rcfw->qp_tbl[qp->id].qp_handle = NULL;
1426
1427         RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags);
1428
1429         req.qp_cid = cpu_to_le32(qp->id);
1430         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
1431                                           (void *)&resp, NULL, 0);
1432         if (rc) {
1433                 rcfw->qp_tbl[qp->id].qp_id = qp->id;
1434                 rcfw->qp_tbl[qp->id].qp_handle = qp;
1435                 return rc;
1436         }
1437
1438         /* Must walk the associated CQs to nullified the QP ptr */
1439         spin_lock_irqsave(&qp->scq->hwq.lock, flags);
1440
1441         __clean_cq(qp->scq, (u64)(unsigned long)qp);
1442
1443         if (qp->rcq && qp->rcq != qp->scq) {
1444                 spin_lock(&qp->rcq->hwq.lock);
1445                 __clean_cq(qp->rcq, (u64)(unsigned long)qp);
1446                 spin_unlock(&qp->rcq->hwq.lock);
1447         }
1448
1449         spin_unlock_irqrestore(&qp->scq->hwq.lock, flags);
1450
1451         bnxt_qplib_free_qp_hdr_buf(res, qp);
1452         bnxt_qplib_free_hwq(res->pdev, &qp->sq.hwq);
1453         kfree(qp->sq.swq);
1454
1455         bnxt_qplib_free_hwq(res->pdev, &qp->rq.hwq);
1456         kfree(qp->rq.swq);
1457
1458         if (qp->irrq.max_elements)
1459                 bnxt_qplib_free_hwq(res->pdev, &qp->irrq);
1460         if (qp->orrq.max_elements)
1461                 bnxt_qplib_free_hwq(res->pdev, &qp->orrq);
1462
1463         return 0;
1464 }
1465
1466 void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
1467                                 struct bnxt_qplib_sge *sge)
1468 {
1469         struct bnxt_qplib_q *sq = &qp->sq;
1470         u32 sw_prod;
1471
1472         memset(sge, 0, sizeof(*sge));
1473
1474         if (qp->sq_hdr_buf) {
1475                 sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
1476                 sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
1477                                          sw_prod * qp->sq_hdr_buf_size);
1478                 sge->lkey = 0xFFFFFFFF;
1479                 sge->size = qp->sq_hdr_buf_size;
1480                 return qp->sq_hdr_buf + sw_prod * sge->size;
1481         }
1482         return NULL;
1483 }
1484
1485 u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
1486 {
1487         struct bnxt_qplib_q *rq = &qp->rq;
1488
1489         return HWQ_CMP(rq->hwq.prod, &rq->hwq);
1490 }
1491
1492 dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
1493 {
1494         return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
1495 }
1496
1497 void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
1498                                 struct bnxt_qplib_sge *sge)
1499 {
1500         struct bnxt_qplib_q *rq = &qp->rq;
1501         u32 sw_prod;
1502
1503         memset(sge, 0, sizeof(*sge));
1504
1505         if (qp->rq_hdr_buf) {
1506                 sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
1507                 sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
1508                                          sw_prod * qp->rq_hdr_buf_size);
1509                 sge->lkey = 0xFFFFFFFF;
1510                 sge->size = qp->rq_hdr_buf_size;
1511                 return qp->rq_hdr_buf + sw_prod * sge->size;
1512         }
1513         return NULL;
1514 }
1515
1516 void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
1517 {
1518         struct bnxt_qplib_q *sq = &qp->sq;
1519         struct dbr_dbr db_msg = { 0 };
1520         u32 sw_prod;
1521
1522         sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
1523
1524         db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
1525                                    DBR_DBR_INDEX_MASK);
1526         db_msg.type_xid =
1527                 cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
1528                             DBR_DBR_TYPE_SQ);
1529         /* Flush all the WQE writes to HW */
1530         wmb();
1531         __iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
1532 }
1533
1534 int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
1535                          struct bnxt_qplib_swqe *wqe)
1536 {
1537         struct bnxt_qplib_q *sq = &qp->sq;
1538         struct bnxt_qplib_swq *swq;
1539         struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
1540         struct sq_sge *hw_sge;
1541         struct bnxt_qplib_nq_work *nq_work = NULL;
1542         bool sch_handler = false;
1543         u32 sw_prod;
1544         u8 wqe_size16;
1545         int i, rc = 0, data_len = 0, pkt_num = 0;
1546         __le32 temp32;
1547
1548         if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS) {
1549                 if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1550                         sch_handler = true;
1551                         dev_dbg(&sq->hwq.pdev->dev,
1552                                 "%s Error QP. Scheduling for poll_cq\n",
1553                                 __func__);
1554                         goto queue_err;
1555                 }
1556         }
1557
1558         if (bnxt_qplib_queue_full(sq)) {
1559                 dev_err(&sq->hwq.pdev->dev,
1560                         "QPLIB: prod = %#x cons = %#x qdepth = %#x delta = %#x",
1561                         sq->hwq.prod, sq->hwq.cons, sq->hwq.max_elements,
1562                         sq->q_full_delta);
1563                 rc = -ENOMEM;
1564                 goto done;
1565         }
1566         sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
1567         swq = &sq->swq[sw_prod];
1568         swq->wr_id = wqe->wr_id;
1569         swq->type = wqe->type;
1570         swq->flags = wqe->flags;
1571         if (qp->sig_type)
1572                 swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1573         swq->start_psn = sq->psn & BTH_PSN_MASK;
1574
1575         hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
1576         hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
1577                                         [get_sqe_idx(sw_prod)];
1578
1579         memset(hw_sq_send_hdr, 0, BNXT_QPLIB_MAX_SQE_ENTRY_SIZE);
1580
1581         if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
1582                 /* Copy the inline data */
1583                 if (wqe->inline_len > BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) {
1584                         dev_warn(&sq->hwq.pdev->dev,
1585                                  "QPLIB: Inline data length > 96 detected");
1586                         data_len = BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH;
1587                 } else {
1588                         data_len = wqe->inline_len;
1589                 }
1590                 memcpy(hw_sq_send_hdr->data, wqe->inline_data, data_len);
1591                 wqe_size16 = (data_len + 15) >> 4;
1592         } else {
1593                 for (i = 0, hw_sge = (struct sq_sge *)hw_sq_send_hdr->data;
1594                      i < wqe->num_sge; i++, hw_sge++) {
1595                         hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
1596                         hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
1597                         hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
1598                         data_len += wqe->sg_list[i].size;
1599                 }
1600                 /* Each SGE entry = 1 WQE size16 */
1601                 wqe_size16 = wqe->num_sge;
1602                 /* HW requires wqe size has room for atleast one SGE even if
1603                  * none was supplied by ULP
1604                  */
1605                 if (!wqe->num_sge)
1606                         wqe_size16++;
1607         }
1608
1609         /* Specifics */
1610         switch (wqe->type) {
1611         case BNXT_QPLIB_SWQE_TYPE_SEND:
1612                 if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
1613                         /* Assemble info for Raw Ethertype QPs */
1614                         struct sq_send_raweth_qp1 *sqe =
1615                                 (struct sq_send_raweth_qp1 *)hw_sq_send_hdr;
1616
1617                         sqe->wqe_type = wqe->type;
1618                         sqe->flags = wqe->flags;
1619                         sqe->wqe_size = wqe_size16 +
1620                                 ((offsetof(typeof(*sqe), data) + 15) >> 4);
1621                         sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
1622                         sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
1623                         sqe->length = cpu_to_le32(data_len);
1624                         sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
1625                                 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
1626                                 SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);
1627
1628                         break;
1629                 }
1630                 /* fall thru */
1631         case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
1632         case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
1633         {
1634                 struct sq_send *sqe = (struct sq_send *)hw_sq_send_hdr;
1635
1636                 sqe->wqe_type = wqe->type;
1637                 sqe->flags = wqe->flags;
1638                 sqe->wqe_size = wqe_size16 +
1639                                 ((offsetof(typeof(*sqe), data) + 15) >> 4);
1640                 sqe->inv_key_or_imm_data = cpu_to_le32(
1641                                                 wqe->send.inv_key);
1642                 if (qp->type == CMDQ_CREATE_QP_TYPE_UD) {
1643                         sqe->q_key = cpu_to_le32(wqe->send.q_key);
1644                         sqe->dst_qp = cpu_to_le32(
1645                                         wqe->send.dst_qp & SQ_SEND_DST_QP_MASK);
1646                         sqe->length = cpu_to_le32(data_len);
1647                         sqe->avid = cpu_to_le32(wqe->send.avid &
1648                                                 SQ_SEND_AVID_MASK);
1649                         sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
1650                 } else {
1651                         sqe->length = cpu_to_le32(data_len);
1652                         sqe->dst_qp = 0;
1653                         sqe->avid = 0;
1654                         if (qp->mtu)
1655                                 pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1656                         if (!pkt_num)
1657                                 pkt_num = 1;
1658                         sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1659                 }
1660                 break;
1661         }
1662         case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
1663         case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
1664         case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
1665         {
1666                 struct sq_rdma *sqe = (struct sq_rdma *)hw_sq_send_hdr;
1667
1668                 sqe->wqe_type = wqe->type;
1669                 sqe->flags = wqe->flags;
1670                 sqe->wqe_size = wqe_size16 +
1671                                 ((offsetof(typeof(*sqe), data) + 15) >> 4);
1672                 sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
1673                 sqe->length = cpu_to_le32((u32)data_len);
1674                 sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
1675                 sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
1676                 if (qp->mtu)
1677                         pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1678                 if (!pkt_num)
1679                         pkt_num = 1;
1680                 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1681                 break;
1682         }
1683         case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
1684         case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
1685         {
1686                 struct sq_atomic *sqe = (struct sq_atomic *)hw_sq_send_hdr;
1687
1688                 sqe->wqe_type = wqe->type;
1689                 sqe->flags = wqe->flags;
1690                 sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
1691                 sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
1692                 sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
1693                 sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
1694                 if (qp->mtu)
1695                         pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
1696                 if (!pkt_num)
1697                         pkt_num = 1;
1698                 sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
1699                 break;
1700         }
1701         case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
1702         {
1703                 struct sq_localinvalidate *sqe =
1704                                 (struct sq_localinvalidate *)hw_sq_send_hdr;
1705
1706                 sqe->wqe_type = wqe->type;
1707                 sqe->flags = wqe->flags;
1708                 sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);
1709
1710                 break;
1711         }
1712         case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
1713         {
1714                 struct sq_fr_pmr *sqe = (struct sq_fr_pmr *)hw_sq_send_hdr;
1715
1716                 sqe->wqe_type = wqe->type;
1717                 sqe->flags = wqe->flags;
1718                 sqe->access_cntl = wqe->frmr.access_cntl |
1719                                    SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
1720                 sqe->zero_based_page_size_log =
1721                         (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
1722                         SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
1723                         (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
1724                 sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
1725                 temp32 = cpu_to_le32(wqe->frmr.length);
1726                 memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
1727                 sqe->numlevels_pbl_page_size_log =
1728                         ((wqe->frmr.pbl_pg_sz_log <<
1729                                         SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
1730                                         SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
1731                         ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
1732                                         SQ_FR_PMR_NUMLEVELS_MASK);
1733
1734                 for (i = 0; i < wqe->frmr.page_list_len; i++)
1735                         wqe->frmr.pbl_ptr[i] = cpu_to_le64(
1736                                                 wqe->frmr.page_list[i] |
1737                                                 PTU_PTE_VALID);
1738                 sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
1739                 sqe->va = cpu_to_le64(wqe->frmr.va);
1740
1741                 break;
1742         }
1743         case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
1744         {
1745                 struct sq_bind *sqe = (struct sq_bind *)hw_sq_send_hdr;
1746
1747                 sqe->wqe_type = wqe->type;
1748                 sqe->flags = wqe->flags;
1749                 sqe->access_cntl = wqe->bind.access_cntl;
1750                 sqe->mw_type_zero_based = wqe->bind.mw_type |
1751                         (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
1752                 sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
1753                 sqe->l_key = cpu_to_le32(wqe->bind.r_key);
1754                 sqe->va = cpu_to_le64(wqe->bind.va);
1755                 temp32 = cpu_to_le32(wqe->bind.length);
1756                 memcpy(&sqe->length, &temp32, sizeof(wqe->bind.length));
1757                 break;
1758         }
1759         default:
1760                 /* Bad wqe, return error */
1761                 rc = -EINVAL;
1762                 goto done;
1763         }
1764         swq->next_psn = sq->psn & BTH_PSN_MASK;
1765         if (swq->psn_search) {
1766                 swq->psn_search->opcode_start_psn = cpu_to_le32(
1767                         ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
1768                          SQ_PSN_SEARCH_START_PSN_MASK) |
1769                         ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
1770                          SQ_PSN_SEARCH_OPCODE_MASK));
1771                 swq->psn_search->flags_next_psn = cpu_to_le32(
1772                         ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
1773                          SQ_PSN_SEARCH_NEXT_PSN_MASK));
1774         }
1775 queue_err:
1776         if (sch_handler) {
1777                 /* Store the ULP info in the software structures */
1778                 sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
1779                 swq = &sq->swq[sw_prod];
1780                 swq->wr_id = wqe->wr_id;
1781                 swq->type = wqe->type;
1782                 swq->flags = wqe->flags;
1783                 if (qp->sig_type)
1784                         swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
1785                 swq->start_psn = sq->psn & BTH_PSN_MASK;
1786         }
1787         sq->hwq.prod++;
1788         qp->wqe_cnt++;
1789
1790 done:
1791         if (sch_handler) {
1792                 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
1793                 if (nq_work) {
1794                         nq_work->cq = qp->scq;
1795                         nq_work->nq = qp->scq->nq;
1796                         INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
1797                         queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
1798                 } else {
1799                         dev_err(&sq->hwq.pdev->dev,
1800                                 "QPLIB: FP: Failed to allocate SQ nq_work!");
1801                         rc = -ENOMEM;
1802                 }
1803         }
1804         return rc;
1805 }
1806
1807 void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
1808 {
1809         struct bnxt_qplib_q *rq = &qp->rq;
1810         struct dbr_dbr db_msg = { 0 };
1811         u32 sw_prod;
1812
1813         sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
1814         db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
1815                                    DBR_DBR_INDEX_MASK);
1816         db_msg.type_xid =
1817                 cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
1818                             DBR_DBR_TYPE_RQ);
1819
1820         /* Flush the writes to HW Rx WQE before the ringing Rx DB */
1821         wmb();
1822         __iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
1823 }
1824
1825 int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
1826                          struct bnxt_qplib_swqe *wqe)
1827 {
1828         struct bnxt_qplib_q *rq = &qp->rq;
1829         struct rq_wqe *rqe, **rqe_ptr;
1830         struct sq_sge *hw_sge;
1831         struct bnxt_qplib_nq_work *nq_work = NULL;
1832         bool sch_handler = false;
1833         u32 sw_prod;
1834         int i, rc = 0;
1835
1836         if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
1837                 sch_handler = true;
1838                 dev_dbg(&rq->hwq.pdev->dev,
1839                         "%s Error QP. Scheduling for poll_cq\n",
1840                         __func__);
1841                 goto queue_err;
1842         }
1843         if (bnxt_qplib_queue_full(rq)) {
1844                 dev_err(&rq->hwq.pdev->dev,
1845                         "QPLIB: FP: QP (0x%x) RQ is full!", qp->id);
1846                 rc = -EINVAL;
1847                 goto done;
1848         }
1849         sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
1850         rq->swq[sw_prod].wr_id = wqe->wr_id;
1851
1852         rqe_ptr = (struct rq_wqe **)rq->hwq.pbl_ptr;
1853         rqe = &rqe_ptr[RQE_PG(sw_prod)][RQE_IDX(sw_prod)];
1854
1855         memset(rqe, 0, BNXT_QPLIB_MAX_RQE_ENTRY_SIZE);
1856
1857         /* Calculate wqe_size16 and data_len */
1858         for (i = 0, hw_sge = (struct sq_sge *)rqe->data;
1859              i < wqe->num_sge; i++, hw_sge++) {
1860                 hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
1861                 hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
1862                 hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
1863         }
1864         rqe->wqe_type = wqe->type;
1865         rqe->flags = wqe->flags;
1866         rqe->wqe_size = wqe->num_sge +
1867                         ((offsetof(typeof(*rqe), data) + 15) >> 4);
1868         /* HW requires wqe size has room for atleast one SGE even if none
1869          * was supplied by ULP
1870          */
1871         if (!wqe->num_sge)
1872                 rqe->wqe_size++;
1873
1874         /* Supply the rqe->wr_id index to the wr_id_tbl for now */
1875         rqe->wr_id[0] = cpu_to_le32(sw_prod);
1876
1877 queue_err:
1878         if (sch_handler) {
1879                 /* Store the ULP info in the software structures */
1880                 sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
1881                 rq->swq[sw_prod].wr_id = wqe->wr_id;
1882         }
1883
1884         rq->hwq.prod++;
1885         if (sch_handler) {
1886                 nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
1887                 if (nq_work) {
1888                         nq_work->cq = qp->rcq;
1889                         nq_work->nq = qp->rcq->nq;
1890                         INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
1891                         queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
1892                 } else {
1893                         dev_err(&rq->hwq.pdev->dev,
1894                                 "QPLIB: FP: Failed to allocate RQ nq_work!");
1895                         rc = -ENOMEM;
1896                 }
1897         }
1898 done:
1899         return rc;
1900 }
1901
1902 /* CQ */
1903
1904 /* Spinlock must be held */
1905 static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq)
1906 {
1907         struct dbr_dbr db_msg = { 0 };
1908
1909         db_msg.type_xid =
1910                 cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
1911                             DBR_DBR_TYPE_CQ_ARMENA);
1912         /* Flush memory writes before enabling the CQ */
1913         wmb();
1914         __iowrite64_copy(cq->dbr_base, &db_msg, sizeof(db_msg) / sizeof(u64));
1915 }
1916
1917 static void bnxt_qplib_arm_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
1918 {
1919         struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
1920         struct dbr_dbr db_msg = { 0 };
1921         u32 sw_cons;
1922
1923         /* Ring DB */
1924         sw_cons = HWQ_CMP(cq_hwq->cons, cq_hwq);
1925         db_msg.index = cpu_to_le32((sw_cons << DBR_DBR_INDEX_SFT) &
1926                                     DBR_DBR_INDEX_MASK);
1927         db_msg.type_xid =
1928                 cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
1929                             arm_type);
1930         /* flush memory writes before arming the CQ */
1931         wmb();
1932         __iowrite64_copy(cq->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
1933 }
1934
1935 int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
1936 {
1937         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
1938         struct cmdq_create_cq req;
1939         struct creq_create_cq_resp resp;
1940         struct bnxt_qplib_pbl *pbl;
1941         u16 cmd_flags = 0;
1942         int rc;
1943
1944         cq->hwq.max_elements = cq->max_wqe;
1945         rc = bnxt_qplib_alloc_init_hwq(res->pdev, &cq->hwq, cq->sghead,
1946                                        cq->nmap, &cq->hwq.max_elements,
1947                                        BNXT_QPLIB_MAX_CQE_ENTRY_SIZE, 0,
1948                                        PAGE_SIZE, HWQ_TYPE_QUEUE);
1949         if (rc)
1950                 goto exit;
1951
1952         RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags);
1953
1954         if (!cq->dpi) {
1955                 dev_err(&rcfw->pdev->dev,
1956                         "QPLIB: FP: CREATE_CQ failed due to NULL DPI");
1957                 return -EINVAL;
1958         }
1959         req.dpi = cpu_to_le32(cq->dpi->dpi);
1960         req.cq_handle = cpu_to_le64(cq->cq_handle);
1961
1962         req.cq_size = cpu_to_le32(cq->hwq.max_elements);
1963         pbl = &cq->hwq.pbl[PBL_LVL_0];
1964         req.pg_size_lvl = cpu_to_le32(
1965             ((cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK) <<
1966                                                 CMDQ_CREATE_CQ_LVL_SFT) |
1967             (pbl->pg_size == ROCE_PG_SIZE_4K ? CMDQ_CREATE_CQ_PG_SIZE_PG_4K :
1968              pbl->pg_size == ROCE_PG_SIZE_8K ? CMDQ_CREATE_CQ_PG_SIZE_PG_8K :
1969              pbl->pg_size == ROCE_PG_SIZE_64K ? CMDQ_CREATE_CQ_PG_SIZE_PG_64K :
1970              pbl->pg_size == ROCE_PG_SIZE_2M ? CMDQ_CREATE_CQ_PG_SIZE_PG_2M :
1971              pbl->pg_size == ROCE_PG_SIZE_8M ? CMDQ_CREATE_CQ_PG_SIZE_PG_8M :
1972              pbl->pg_size == ROCE_PG_SIZE_1G ? CMDQ_CREATE_CQ_PG_SIZE_PG_1G :
1973              CMDQ_CREATE_CQ_PG_SIZE_PG_4K));
1974
1975         req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
1976
1977         req.cq_fco_cnq_id = cpu_to_le32(
1978                         (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
1979                          CMDQ_CREATE_CQ_CNQ_ID_SFT);
1980
1981         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
1982                                           (void *)&resp, NULL, 0);
1983         if (rc)
1984                 goto fail;
1985
1986         cq->id = le32_to_cpu(resp.xid);
1987         cq->dbr_base = res->dpi_tbl.dbr_bar_reg_iomem;
1988         cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
1989         init_waitqueue_head(&cq->waitq);
1990         INIT_LIST_HEAD(&cq->sqf_head);
1991         INIT_LIST_HEAD(&cq->rqf_head);
1992         spin_lock_init(&cq->compl_lock);
1993
1994         bnxt_qplib_arm_cq_enable(cq);
1995         return 0;
1996
1997 fail:
1998         bnxt_qplib_free_hwq(res->pdev, &cq->hwq);
1999 exit:
2000         return rc;
2001 }
2002
2003 int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
2004 {
2005         struct bnxt_qplib_rcfw *rcfw = res->rcfw;
2006         struct cmdq_destroy_cq req;
2007         struct creq_destroy_cq_resp resp;
2008         u16 cmd_flags = 0;
2009         int rc;
2010
2011         RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags);
2012
2013         req.cq_cid = cpu_to_le32(cq->id);
2014         rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
2015                                           (void *)&resp, NULL, 0);
2016         if (rc)
2017                 return rc;
2018         bnxt_qplib_free_hwq(res->pdev, &cq->hwq);
2019         return 0;
2020 }
2021
2022 static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
2023                       struct bnxt_qplib_cqe **pcqe, int *budget)
2024 {
2025         u32 sw_prod, sw_cons;
2026         struct bnxt_qplib_cqe *cqe;
2027         int rc = 0;
2028
2029         /* Now complete all outstanding SQEs with FLUSHED_ERR */
2030         sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
2031         cqe = *pcqe;
2032         while (*budget) {
2033                 sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
2034                 if (sw_cons == sw_prod) {
2035                         break;
2036                 }
2037                 /* Skip the FENCE WQE completions */
2038                 if (sq->swq[sw_cons].wr_id == BNXT_QPLIB_FENCE_WRID) {
2039                         bnxt_qplib_cancel_phantom_processing(qp);
2040                         goto skip_compl;
2041                 }
2042                 memset(cqe, 0, sizeof(*cqe));
2043                 cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
2044                 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2045                 cqe->qp_handle = (u64)(unsigned long)qp;
2046                 cqe->wr_id = sq->swq[sw_cons].wr_id;
2047                 cqe->src_qp = qp->id;
2048                 cqe->type = sq->swq[sw_cons].type;
2049                 cqe++;
2050                 (*budget)--;
2051 skip_compl:
2052                 sq->hwq.cons++;
2053         }
2054         *pcqe = cqe;
2055         if (!(*budget) && HWQ_CMP(sq->hwq.cons, &sq->hwq) != sw_prod)
2056                 /* Out of budget */
2057                 rc = -EAGAIN;
2058
2059         return rc;
2060 }
2061
2062 static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
2063                       struct bnxt_qplib_cqe **pcqe, int *budget)
2064 {
2065         struct bnxt_qplib_cqe *cqe;
2066         u32 sw_prod, sw_cons;
2067         int rc = 0;
2068         int opcode = 0;
2069
2070         switch (qp->type) {
2071         case CMDQ_CREATE_QP1_TYPE_GSI:
2072                 opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
2073                 break;
2074         case CMDQ_CREATE_QP_TYPE_RC:
2075                 opcode = CQ_BASE_CQE_TYPE_RES_RC;
2076                 break;
2077         case CMDQ_CREATE_QP_TYPE_UD:
2078                 opcode = CQ_BASE_CQE_TYPE_RES_UD;
2079                 break;
2080         }
2081
2082         /* Flush the rest of the RQ */
2083         sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
2084         cqe = *pcqe;
2085         while (*budget) {
2086                 sw_cons = HWQ_CMP(rq->hwq.cons, &rq->hwq);
2087                 if (sw_cons == sw_prod)
2088                         break;
2089                 memset(cqe, 0, sizeof(*cqe));
2090                 cqe->status =
2091                     CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
2092                 cqe->opcode = opcode;
2093                 cqe->qp_handle = (unsigned long)qp;
2094                 cqe->wr_id = rq->swq[sw_cons].wr_id;
2095                 cqe++;
2096                 (*budget)--;
2097                 rq->hwq.cons++;
2098         }
2099         *pcqe = cqe;
2100         if (!*budget && HWQ_CMP(rq->hwq.cons, &rq->hwq) != sw_prod)
2101                 /* Out of budget */
2102                 rc = -EAGAIN;
2103
2104         return rc;
2105 }
2106
2107 void bnxt_qplib_mark_qp_error(void *qp_handle)
2108 {
2109         struct bnxt_qplib_qp *qp = qp_handle;
2110
2111         if (!qp)
2112                 return;
2113
2114         /* Must block new posting of SQ and RQ */
2115         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2116         bnxt_qplib_cancel_phantom_processing(qp);
2117
2118         /* Add qp to flush list of the CQ */
2119         __bnxt_qplib_add_flush_qp(qp);
2120 }
2121
2122 /* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
2123  *       CQE is track from sw_cq_cons to max_element but valid only if VALID=1
2124  */
2125 static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
2126                      u32 cq_cons, u32 sw_sq_cons, u32 cqe_sq_cons)
2127 {
2128         struct bnxt_qplib_q *sq = &qp->sq;
2129         struct bnxt_qplib_swq *swq;
2130         u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx;
2131         struct cq_base *peek_hwcqe, **peek_hw_cqe_ptr;
2132         struct cq_req *peek_req_hwcqe;
2133         struct bnxt_qplib_qp *peek_qp;
2134         struct bnxt_qplib_q *peek_sq;
2135         int i, rc = 0;
2136
2137         /* Normal mode */
2138         /* Check for the psn_search marking before completing */
2139         swq = &sq->swq[sw_sq_cons];
2140         if (swq->psn_search &&
2141             le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
2142                 /* Unmark */
2143                 swq->psn_search->flags_next_psn = cpu_to_le32
2144                         (le32_to_cpu(swq->psn_search->flags_next_psn)
2145                                      & ~0x80000000);
2146                 dev_dbg(&cq->hwq.pdev->dev,
2147                         "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
2148                         cq_cons, qp->id, sw_sq_cons, cqe_sq_cons);
2149                 sq->condition = true;
2150                 sq->send_phantom = true;
2151
2152                 /* TODO: Only ARM if the previous SQE is ARMALL */
2153                 bnxt_qplib_arm_cq(cq, DBR_DBR_TYPE_CQ_ARMALL);
2154
2155                 rc = -EAGAIN;
2156                 goto out;
2157         }
2158         if (sq->condition) {
2159                 /* Peek at the completions */
2160                 peek_raw_cq_cons = cq->hwq.cons;
2161                 peek_sw_cq_cons = cq_cons;
2162                 i = cq->hwq.max_elements;
2163                 while (i--) {
2164                         peek_sw_cq_cons = HWQ_CMP((peek_sw_cq_cons), &cq->hwq);
2165                         peek_hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
2166                         peek_hwcqe = &peek_hw_cqe_ptr[CQE_PG(peek_sw_cq_cons)]
2167                                                      [CQE_IDX(peek_sw_cq_cons)];
2168                         /* If the next hwcqe is VALID */
2169                         if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons,
2170                                           cq->hwq.max_elements)) {
2171                         /*
2172                          * The valid test of the entry must be done first before
2173                          * reading any further.
2174                          */
2175                                 dma_rmb();
2176                                 /* If the next hwcqe is a REQ */
2177                                 if ((peek_hwcqe->cqe_type_toggle &
2178                                     CQ_BASE_CQE_TYPE_MASK) ==
2179                                     CQ_BASE_CQE_TYPE_REQ) {
2180                                         peek_req_hwcqe = (struct cq_req *)
2181                                                          peek_hwcqe;
2182                                         peek_qp = (struct bnxt_qplib_qp *)
2183                                                 ((unsigned long)
2184                                                  le64_to_cpu
2185                                                  (peek_req_hwcqe->qp_handle));
2186                                         peek_sq = &peek_qp->sq;
2187                                         peek_sq_cons_idx = HWQ_CMP(le16_to_cpu(
2188                                                 peek_req_hwcqe->sq_cons_idx) - 1
2189                                                 , &sq->hwq);
2190                                         /* If the hwcqe's sq's wr_id matches */
2191                                         if (peek_sq == sq &&
2192                                             sq->swq[peek_sq_cons_idx].wr_id ==
2193                                             BNXT_QPLIB_FENCE_WRID) {
2194                                                 /*
2195                                                  *  Unbreak only if the phantom
2196                                                  *  comes back
2197                                                  */
2198                                                 dev_dbg(&cq->hwq.pdev->dev,
2199                                                         "FP:Got Phantom CQE");
2200                                                 sq->condition = false;
2201                                                 sq->single = true;
2202                                                 rc = 0;
2203                                                 goto out;
2204                                         }
2205                                 }
2206                                 /* Valid but not the phantom, so keep looping */
2207                         } else {
2208                                 /* Not valid yet, just exit and wait */
2209                                 rc = -EINVAL;
2210                                 goto out;
2211                         }
2212                         peek_sw_cq_cons++;
2213                         peek_raw_cq_cons++;
2214                 }
2215                 dev_err(&cq->hwq.pdev->dev,
2216                         "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x",
2217                         cq_cons, qp->id, sw_sq_cons, cqe_sq_cons);
2218                 rc = -EINVAL;
2219         }
2220 out:
2221         return rc;
2222 }
2223
2224 static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
2225                                      struct cq_req *hwcqe,
2226                                      struct bnxt_qplib_cqe **pcqe, int *budget,
2227                                      u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
2228 {
2229         struct bnxt_qplib_qp *qp;
2230         struct bnxt_qplib_q *sq;
2231         struct bnxt_qplib_cqe *cqe;
2232         u32 sw_sq_cons, cqe_sq_cons;
2233         struct bnxt_qplib_swq *swq;
2234         int rc = 0;
2235
2236         qp = (struct bnxt_qplib_qp *)((unsigned long)
2237                                       le64_to_cpu(hwcqe->qp_handle));
2238         if (!qp) {
2239                 dev_err(&cq->hwq.pdev->dev,
2240                         "QPLIB: FP: Process Req qp is NULL");
2241                 return -EINVAL;
2242         }
2243         sq = &qp->sq;
2244
2245         cqe_sq_cons = HWQ_CMP(le16_to_cpu(hwcqe->sq_cons_idx), &sq->hwq);
2246         if (cqe_sq_cons > sq->hwq.max_elements) {
2247                 dev_err(&cq->hwq.pdev->dev,
2248                         "QPLIB: FP: CQ Process req reported ");
2249                 dev_err(&cq->hwq.pdev->dev,
2250                         "QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
2251                         cqe_sq_cons, sq->hwq.max_elements);
2252                 return -EINVAL;
2253         }
2254
2255         if (qp->sq.flushed) {
2256                 dev_dbg(&cq->hwq.pdev->dev,
2257                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2258                 goto done;
2259         }
2260         /* Require to walk the sq's swq to fabricate CQEs for all previously
2261          * signaled SWQEs due to CQE aggregation from the current sq cons
2262          * to the cqe_sq_cons
2263          */
2264         cqe = *pcqe;
2265         while (*budget) {
2266                 sw_sq_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
2267                 if (sw_sq_cons == cqe_sq_cons)
2268                         /* Done */
2269                         break;
2270
2271                 swq = &sq->swq[sw_sq_cons];
2272                 memset(cqe, 0, sizeof(*cqe));
2273                 cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2274                 cqe->qp_handle = (u64)(unsigned long)qp;
2275                 cqe->src_qp = qp->id;
2276                 cqe->wr_id = swq->wr_id;
2277                 if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
2278                         goto skip;
2279                 cqe->type = swq->type;
2280
2281                 /* For the last CQE, check for status.  For errors, regardless
2282                  * of the request being signaled or not, it must complete with
2283                  * the hwcqe error status
2284                  */
2285                 if (HWQ_CMP((sw_sq_cons + 1), &sq->hwq) == cqe_sq_cons &&
2286                     hwcqe->status != CQ_REQ_STATUS_OK) {
2287                         cqe->status = hwcqe->status;
2288                         dev_err(&cq->hwq.pdev->dev,
2289                                 "QPLIB: FP: CQ Processed Req ");
2290                         dev_err(&cq->hwq.pdev->dev,
2291                                 "QPLIB: wr_id[%d] = 0x%llx with status 0x%x",
2292                                 sw_sq_cons, cqe->wr_id, cqe->status);
2293                         cqe++;
2294                         (*budget)--;
2295                         bnxt_qplib_lock_buddy_cq(qp, cq);
2296                         bnxt_qplib_mark_qp_error(qp);
2297                         bnxt_qplib_unlock_buddy_cq(qp, cq);
2298                 } else {
2299                         if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2300                                 /* Before we complete, do WA 9060 */
2301                                 if (do_wa9060(qp, cq, cq_cons, sw_sq_cons,
2302                                               cqe_sq_cons)) {
2303                                         *lib_qp = qp;
2304                                         goto out;
2305                                 }
2306                                 cqe->status = CQ_REQ_STATUS_OK;
2307                                 cqe++;
2308                                 (*budget)--;
2309                         }
2310                 }
2311 skip:
2312                 sq->hwq.cons++;
2313                 if (sq->single)
2314                         break;
2315         }
2316 out:
2317         *pcqe = cqe;
2318         if (HWQ_CMP(sq->hwq.cons, &sq->hwq) != cqe_sq_cons) {
2319                 /* Out of budget */
2320                 rc = -EAGAIN;
2321                 goto done;
2322         }
2323         /*
2324          * Back to normal completion mode only after it has completed all of
2325          * the WC for this CQE
2326          */
2327         sq->single = false;
2328 done:
2329         return rc;
2330 }
2331
2332 static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
2333 {
2334         spin_lock(&srq->hwq.lock);
2335         srq->swq[srq->last_idx].next_idx = (int)tag;
2336         srq->last_idx = (int)tag;
2337         srq->swq[srq->last_idx].next_idx = -1;
2338         srq->hwq.cons++; /* Support for SRQE counter */
2339         spin_unlock(&srq->hwq.lock);
2340 }
2341
2342 static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
2343                                         struct cq_res_rc *hwcqe,
2344                                         struct bnxt_qplib_cqe **pcqe,
2345                                         int *budget)
2346 {
2347         struct bnxt_qplib_qp *qp;
2348         struct bnxt_qplib_q *rq;
2349         struct bnxt_qplib_srq *srq;
2350         struct bnxt_qplib_cqe *cqe;
2351         u32 wr_id_idx;
2352         int rc = 0;
2353
2354         qp = (struct bnxt_qplib_qp *)((unsigned long)
2355                                       le64_to_cpu(hwcqe->qp_handle));
2356         if (!qp) {
2357                 dev_err(&cq->hwq.pdev->dev, "QPLIB: process_cq RC qp is NULL");
2358                 return -EINVAL;
2359         }
2360         if (qp->rq.flushed) {
2361                 dev_dbg(&cq->hwq.pdev->dev,
2362                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2363                 goto done;
2364         }
2365
2366         cqe = *pcqe;
2367         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2368         cqe->length = le32_to_cpu(hwcqe->length);
2369         cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
2370         cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
2371         cqe->flags = le16_to_cpu(hwcqe->flags);
2372         cqe->status = hwcqe->status;
2373         cqe->qp_handle = (u64)(unsigned long)qp;
2374
2375         wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
2376                                 CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
2377         if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2378                 srq = qp->srq;
2379                 if (!srq)
2380                         return -EINVAL;
2381                 if (wr_id_idx > srq->hwq.max_elements) {
2382                         dev_err(&cq->hwq.pdev->dev,
2383                                 "QPLIB: FP: CQ Process RC ");
2384                         dev_err(&cq->hwq.pdev->dev,
2385                                 "QPLIB: wr_id idx 0x%x exceeded SRQ max 0x%x",
2386                                 wr_id_idx, srq->hwq.max_elements);
2387                         return -EINVAL;
2388                 }
2389                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2390                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2391                 cqe++;
2392                 (*budget)--;
2393                 *pcqe = cqe;
2394         } else {
2395                 rq = &qp->rq;
2396                 if (wr_id_idx > rq->hwq.max_elements) {
2397                         dev_err(&cq->hwq.pdev->dev,
2398                                 "QPLIB: FP: CQ Process RC ");
2399                         dev_err(&cq->hwq.pdev->dev,
2400                                 "QPLIB: wr_id idx 0x%x exceeded RQ max 0x%x",
2401                                 wr_id_idx, rq->hwq.max_elements);
2402                         return -EINVAL;
2403                 }
2404                 cqe->wr_id = rq->swq[wr_id_idx].wr_id;
2405                 cqe++;
2406                 (*budget)--;
2407                 rq->hwq.cons++;
2408                 *pcqe = cqe;
2409
2410                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2411                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2412                         /* Add qp to flush list of the CQ */
2413                         bnxt_qplib_lock_buddy_cq(qp, cq);
2414                         __bnxt_qplib_add_flush_qp(qp);
2415                         bnxt_qplib_unlock_buddy_cq(qp, cq);
2416                 }
2417         }
2418
2419 done:
2420         return rc;
2421 }
2422
2423 static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
2424                                         struct cq_res_ud *hwcqe,
2425                                         struct bnxt_qplib_cqe **pcqe,
2426                                         int *budget)
2427 {
2428         struct bnxt_qplib_qp *qp;
2429         struct bnxt_qplib_q *rq;
2430         struct bnxt_qplib_srq *srq;
2431         struct bnxt_qplib_cqe *cqe;
2432         u32 wr_id_idx;
2433         int rc = 0;
2434
2435         qp = (struct bnxt_qplib_qp *)((unsigned long)
2436                                       le64_to_cpu(hwcqe->qp_handle));
2437         if (!qp) {
2438                 dev_err(&cq->hwq.pdev->dev, "QPLIB: process_cq UD qp is NULL");
2439                 return -EINVAL;
2440         }
2441         if (qp->rq.flushed) {
2442                 dev_dbg(&cq->hwq.pdev->dev,
2443                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2444                 goto done;
2445         }
2446         cqe = *pcqe;
2447         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2448         cqe->length = le32_to_cpu(hwcqe->length);
2449         cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
2450         cqe->flags = le16_to_cpu(hwcqe->flags);
2451         cqe->status = hwcqe->status;
2452         cqe->qp_handle = (u64)(unsigned long)qp;
2453         memcpy(cqe->smac, hwcqe->src_mac, 6);
2454         wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
2455                                 & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
2456         cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
2457                                   ((le32_to_cpu(
2458                                   hwcqe->src_qp_high_srq_or_rq_wr_id) &
2459                                  CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);
2460
2461         if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
2462                 srq = qp->srq;
2463                 if (!srq)
2464                         return -EINVAL;
2465
2466                 if (wr_id_idx > srq->hwq.max_elements) {
2467                         dev_err(&cq->hwq.pdev->dev,
2468                                 "QPLIB: FP: CQ Process UD ");
2469                         dev_err(&cq->hwq.pdev->dev,
2470                                 "QPLIB: wr_id idx 0x%x exceeded SRQ max 0x%x",
2471                                 wr_id_idx, srq->hwq.max_elements);
2472                         return -EINVAL;
2473                 }
2474                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2475                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2476                 cqe++;
2477                 (*budget)--;
2478                 *pcqe = cqe;
2479         } else {
2480                 rq = &qp->rq;
2481                 if (wr_id_idx > rq->hwq.max_elements) {
2482                         dev_err(&cq->hwq.pdev->dev,
2483                                 "QPLIB: FP: CQ Process UD ");
2484                         dev_err(&cq->hwq.pdev->dev,
2485                                 "QPLIB: wr_id idx 0x%x exceeded RQ max 0x%x",
2486                                 wr_id_idx, rq->hwq.max_elements);
2487                         return -EINVAL;
2488                 }
2489
2490                 cqe->wr_id = rq->swq[wr_id_idx].wr_id;
2491                 cqe++;
2492                 (*budget)--;
2493                 rq->hwq.cons++;
2494                 *pcqe = cqe;
2495
2496                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2497                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2498                         /* Add qp to flush list of the CQ */
2499                         bnxt_qplib_lock_buddy_cq(qp, cq);
2500                         __bnxt_qplib_add_flush_qp(qp);
2501                         bnxt_qplib_unlock_buddy_cq(qp, cq);
2502                 }
2503         }
2504 done:
2505         return rc;
2506 }
2507
2508 bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
2509 {
2510         struct cq_base *hw_cqe, **hw_cqe_ptr;
2511         unsigned long flags;
2512         u32 sw_cons, raw_cons;
2513         bool rc = true;
2514
2515         spin_lock_irqsave(&cq->hwq.lock, flags);
2516         raw_cons = cq->hwq.cons;
2517         sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
2518         hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
2519         hw_cqe = &hw_cqe_ptr[CQE_PG(sw_cons)][CQE_IDX(sw_cons)];
2520
2521          /* Check for Valid bit. If the CQE is valid, return false */
2522         rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements);
2523         spin_unlock_irqrestore(&cq->hwq.lock, flags);
2524         return rc;
2525 }
2526
2527 static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
2528                                                 struct cq_res_raweth_qp1 *hwcqe,
2529                                                 struct bnxt_qplib_cqe **pcqe,
2530                                                 int *budget)
2531 {
2532         struct bnxt_qplib_qp *qp;
2533         struct bnxt_qplib_q *rq;
2534         struct bnxt_qplib_srq *srq;
2535         struct bnxt_qplib_cqe *cqe;
2536         u32 wr_id_idx;
2537         int rc = 0;
2538
2539         qp = (struct bnxt_qplib_qp *)((unsigned long)
2540                                       le64_to_cpu(hwcqe->qp_handle));
2541         if (!qp) {
2542                 dev_err(&cq->hwq.pdev->dev,
2543                         "QPLIB: process_cq Raw/QP1 qp is NULL");
2544                 return -EINVAL;
2545         }
2546         if (qp->rq.flushed) {
2547                 dev_dbg(&cq->hwq.pdev->dev,
2548                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2549                 goto done;
2550         }
2551         cqe = *pcqe;
2552         cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
2553         cqe->flags = le16_to_cpu(hwcqe->flags);
2554         cqe->qp_handle = (u64)(unsigned long)qp;
2555
2556         wr_id_idx =
2557                 le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
2558                                 & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
2559         cqe->src_qp = qp->id;
2560         if (qp->id == 1 && !cqe->length) {
2561                 /* Add workaround for the length misdetection */
2562                 cqe->length = 296;
2563         } else {
2564                 cqe->length = le16_to_cpu(hwcqe->length);
2565         }
2566         cqe->pkey_index = qp->pkey_index;
2567         memcpy(cqe->smac, qp->smac, 6);
2568
2569         cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
2570         cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
2571         cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);
2572
2573         if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
2574                 srq = qp->srq;
2575                 if (!srq) {
2576                         dev_err(&cq->hwq.pdev->dev,
2577                                 "QPLIB: FP: SRQ used but not defined??");
2578                         return -EINVAL;
2579                 }
2580                 if (wr_id_idx > srq->hwq.max_elements) {
2581                         dev_err(&cq->hwq.pdev->dev,
2582                                 "QPLIB: FP: CQ Process Raw/QP1 ");
2583                         dev_err(&cq->hwq.pdev->dev,
2584                                 "QPLIB: wr_id idx 0x%x exceeded SRQ max 0x%x",
2585                                 wr_id_idx, srq->hwq.max_elements);
2586                         return -EINVAL;
2587                 }
2588                 cqe->wr_id = srq->swq[wr_id_idx].wr_id;
2589                 bnxt_qplib_release_srqe(srq, wr_id_idx);
2590                 cqe++;
2591                 (*budget)--;
2592                 *pcqe = cqe;
2593         } else {
2594                 rq = &qp->rq;
2595                 if (wr_id_idx > rq->hwq.max_elements) {
2596                         dev_err(&cq->hwq.pdev->dev,
2597                                 "QPLIB: FP: CQ Process Raw/QP1 RQ wr_id ");
2598                         dev_err(&cq->hwq.pdev->dev,
2599                                 "QPLIB: ix 0x%x exceeded RQ max 0x%x",
2600                                 wr_id_idx, rq->hwq.max_elements);
2601                         return -EINVAL;
2602                 }
2603                 cqe->wr_id = rq->swq[wr_id_idx].wr_id;
2604                 cqe++;
2605                 (*budget)--;
2606                 rq->hwq.cons++;
2607                 *pcqe = cqe;
2608
2609                 if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
2610                         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2611                         /* Add qp to flush list of the CQ */
2612                         bnxt_qplib_lock_buddy_cq(qp, cq);
2613                         __bnxt_qplib_add_flush_qp(qp);
2614                         bnxt_qplib_unlock_buddy_cq(qp, cq);
2615                 }
2616         }
2617
2618 done:
2619         return rc;
2620 }
2621
2622 static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
2623                                           struct cq_terminal *hwcqe,
2624                                           struct bnxt_qplib_cqe **pcqe,
2625                                           int *budget)
2626 {
2627         struct bnxt_qplib_qp *qp;
2628         struct bnxt_qplib_q *sq, *rq;
2629         struct bnxt_qplib_cqe *cqe;
2630         u32 sw_cons = 0, cqe_cons;
2631         int rc = 0;
2632
2633         /* Check the Status */
2634         if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
2635                 dev_warn(&cq->hwq.pdev->dev,
2636                          "QPLIB: FP: CQ Process Terminal Error status = 0x%x",
2637                          hwcqe->status);
2638
2639         qp = (struct bnxt_qplib_qp *)((unsigned long)
2640                                       le64_to_cpu(hwcqe->qp_handle));
2641         if (!qp) {
2642                 dev_err(&cq->hwq.pdev->dev,
2643                         "QPLIB: FP: CQ Process terminal qp is NULL");
2644                 return -EINVAL;
2645         }
2646
2647         /* Must block new posting of SQ and RQ */
2648         qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
2649
2650         sq = &qp->sq;
2651         rq = &qp->rq;
2652
2653         cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
2654         if (cqe_cons == 0xFFFF)
2655                 goto do_rq;
2656
2657         if (cqe_cons > sq->hwq.max_elements) {
2658                 dev_err(&cq->hwq.pdev->dev,
2659                         "QPLIB: FP: CQ Process terminal reported ");
2660                 dev_err(&cq->hwq.pdev->dev,
2661                         "QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
2662                         cqe_cons, sq->hwq.max_elements);
2663                 goto do_rq;
2664         }
2665
2666         if (qp->sq.flushed) {
2667                 dev_dbg(&cq->hwq.pdev->dev,
2668                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2669                 goto sq_done;
2670         }
2671
2672         /* Terminal CQE can also include aggregated successful CQEs prior.
2673          * So we must complete all CQEs from the current sq's cons to the
2674          * cq_cons with status OK
2675          */
2676         cqe = *pcqe;
2677         while (*budget) {
2678                 sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
2679                 if (sw_cons == cqe_cons)
2680                         break;
2681                 if (sq->swq[sw_cons].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
2682                         memset(cqe, 0, sizeof(*cqe));
2683                         cqe->status = CQ_REQ_STATUS_OK;
2684                         cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
2685                         cqe->qp_handle = (u64)(unsigned long)qp;
2686                         cqe->src_qp = qp->id;
2687                         cqe->wr_id = sq->swq[sw_cons].wr_id;
2688                         cqe->type = sq->swq[sw_cons].type;
2689                         cqe++;
2690                         (*budget)--;
2691                 }
2692                 sq->hwq.cons++;
2693         }
2694         *pcqe = cqe;
2695         if (!(*budget) && sw_cons != cqe_cons) {
2696                 /* Out of budget */
2697                 rc = -EAGAIN;
2698                 goto sq_done;
2699         }
2700 sq_done:
2701         if (rc)
2702                 return rc;
2703 do_rq:
2704         cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
2705         if (cqe_cons == 0xFFFF) {
2706                 goto done;
2707         } else if (cqe_cons > rq->hwq.max_elements) {
2708                 dev_err(&cq->hwq.pdev->dev,
2709                         "QPLIB: FP: CQ Processed terminal ");
2710                 dev_err(&cq->hwq.pdev->dev,
2711                         "QPLIB: reported rq_cons_idx 0x%x exceeds max 0x%x",
2712                         cqe_cons, rq->hwq.max_elements);
2713                 goto done;
2714         }
2715
2716         if (qp->rq.flushed) {
2717                 dev_dbg(&cq->hwq.pdev->dev,
2718                         "%s: QPLIB: QP in Flush QP = %p\n", __func__, qp);
2719                 rc = 0;
2720                 goto done;
2721         }
2722
2723         /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
2724          * from the current rq->cons to the rq->prod regardless what the
2725          * rq->cons the terminal CQE indicates
2726          */
2727
2728         /* Add qp to flush list of the CQ */
2729         bnxt_qplib_lock_buddy_cq(qp, cq);
2730         __bnxt_qplib_add_flush_qp(qp);
2731         bnxt_qplib_unlock_buddy_cq(qp, cq);
2732 done:
2733         return rc;
2734 }
2735
2736 static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
2737                                         struct cq_cutoff *hwcqe)
2738 {
2739         /* Check the Status */
2740         if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
2741                 dev_err(&cq->hwq.pdev->dev,
2742                         "QPLIB: FP: CQ Process Cutoff Error status = 0x%x",
2743                         hwcqe->status);
2744                 return -EINVAL;
2745         }
2746         clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
2747         wake_up_interruptible(&cq->waitq);
2748
2749         return 0;
2750 }
2751
2752 int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
2753                                   struct bnxt_qplib_cqe *cqe,
2754                                   int num_cqes)
2755 {
2756         struct bnxt_qplib_qp *qp = NULL;
2757         u32 budget = num_cqes;
2758         unsigned long flags;
2759
2760         spin_lock_irqsave(&cq->hwq.lock, flags);
2761         list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
2762                 dev_dbg(&cq->hwq.pdev->dev,
2763                         "QPLIB: FP: Flushing SQ QP= %p",
2764                         qp);
2765                 __flush_sq(&qp->sq, qp, &cqe, &budget);
2766         }
2767
2768         list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
2769                 dev_dbg(&cq->hwq.pdev->dev,
2770                         "QPLIB: FP: Flushing RQ QP= %p",
2771                         qp);
2772                 __flush_rq(&qp->rq, qp, &cqe, &budget);
2773         }
2774         spin_unlock_irqrestore(&cq->hwq.lock, flags);
2775
2776         return num_cqes - budget;
2777 }
2778
2779 int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
2780                        int num_cqes, struct bnxt_qplib_qp **lib_qp)
2781 {
2782         struct cq_base *hw_cqe, **hw_cqe_ptr;
2783         unsigned long flags;
2784         u32 sw_cons, raw_cons;
2785         int budget, rc = 0;
2786
2787         spin_lock_irqsave(&cq->hwq.lock, flags);
2788         raw_cons = cq->hwq.cons;
2789         budget = num_cqes;
2790
2791         while (budget) {
2792                 sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
2793                 hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
2794                 hw_cqe = &hw_cqe_ptr[CQE_PG(sw_cons)][CQE_IDX(sw_cons)];
2795
2796                 /* Check for Valid bit */
2797                 if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements))
2798                         break;
2799
2800                 /*
2801                  * The valid test of the entry must be done first before
2802                  * reading any further.
2803                  */
2804                 dma_rmb();
2805                 /* From the device's respective CQE format to qplib_wc*/
2806                 switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
2807                 case CQ_BASE_CQE_TYPE_REQ:
2808                         rc = bnxt_qplib_cq_process_req(cq,
2809                                                        (struct cq_req *)hw_cqe,
2810                                                        &cqe, &budget,
2811                                                        sw_cons, lib_qp);
2812                         break;
2813                 case CQ_BASE_CQE_TYPE_RES_RC:
2814                         rc = bnxt_qplib_cq_process_res_rc(cq,
2815                                                           (struct cq_res_rc *)
2816                                                           hw_cqe, &cqe,
2817                                                           &budget);
2818                         break;
2819                 case CQ_BASE_CQE_TYPE_RES_UD:
2820                         rc = bnxt_qplib_cq_process_res_ud
2821                                         (cq, (struct cq_res_ud *)hw_cqe, &cqe,
2822                                          &budget);
2823                         break;
2824                 case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
2825                         rc = bnxt_qplib_cq_process_res_raweth_qp1
2826                                         (cq, (struct cq_res_raweth_qp1 *)
2827                                          hw_cqe, &cqe, &budget);
2828                         break;
2829                 case CQ_BASE_CQE_TYPE_TERMINAL:
2830                         rc = bnxt_qplib_cq_process_terminal
2831                                         (cq, (struct cq_terminal *)hw_cqe,
2832                                          &cqe, &budget);
2833                         break;
2834                 case CQ_BASE_CQE_TYPE_CUT_OFF:
2835                         bnxt_qplib_cq_process_cutoff
2836                                         (cq, (struct cq_cutoff *)hw_cqe);
2837                         /* Done processing this CQ */
2838                         goto exit;
2839                 default:
2840                         dev_err(&cq->hwq.pdev->dev,
2841                                 "QPLIB: process_cq unknown type 0x%lx",
2842                                 hw_cqe->cqe_type_toggle &
2843                                 CQ_BASE_CQE_TYPE_MASK);
2844                         rc = -EINVAL;
2845                         break;
2846                 }
2847                 if (rc < 0) {
2848                         if (rc == -EAGAIN)
2849                                 break;
2850                         /* Error while processing the CQE, just skip to the
2851                          * next one
2852                          */
2853                         dev_err(&cq->hwq.pdev->dev,
2854                                 "QPLIB: process_cqe error rc = 0x%x", rc);
2855                 }
2856                 raw_cons++;
2857         }
2858         if (cq->hwq.cons != raw_cons) {
2859                 cq->hwq.cons = raw_cons;
2860                 bnxt_qplib_arm_cq(cq, DBR_DBR_TYPE_CQ);
2861         }
2862 exit:
2863         spin_unlock_irqrestore(&cq->hwq.lock, flags);
2864         return num_cqes - budget;
2865 }
2866
2867 void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
2868 {
2869         unsigned long flags;
2870
2871         spin_lock_irqsave(&cq->hwq.lock, flags);
2872         if (arm_type)
2873                 bnxt_qplib_arm_cq(cq, arm_type);
2874         /* Using cq->arm_state variable to track whether to issue cq handler */
2875         atomic_set(&cq->arm_state, 1);
2876         spin_unlock_irqrestore(&cq->hwq.lock, flags);
2877 }
2878
2879 void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
2880 {
2881         flush_workqueue(qp->scq->nq->cqn_wq);
2882         if (qp->scq != qp->rcq)
2883                 flush_workqueue(qp->rcq->nq->cqn_wq);
2884 }