/*
 * Broadcom NetXtreme-E RoCE driver.
 *
 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved.  The term
 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * BSD license below:
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Description: Fast Path Operators
 */

#define dev_fmt(fmt) "QPLIB: " fmt

#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/prefetch.h>
#include <linux/if_ether.h>

#include "roce_hsi.h"

#include "qplib_res.h"
#include "qplib_rcfw.h"
#include "qplib_sp.h"
#include "qplib_fp.h"

static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp);

static void bnxt_qplib_cancel_phantom_processing(struct bnxt_qplib_qp *qp)
{
        qp->sq.condition = false;
        qp->sq.send_phantom = false;
        qp->sq.single = false;
}

/* Flush list */
static void __bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_cq *scq, *rcq;

        scq = qp->scq;
        rcq = qp->rcq;

        if (!qp->sq.flushed) {
                dev_dbg(&scq->hwq.pdev->dev,
                        "FP: Adding to SQ Flush list = %p\n", qp);
                bnxt_qplib_cancel_phantom_processing(qp);
                list_add_tail(&qp->sq_flush, &scq->sqf_head);
                qp->sq.flushed = true;
        }
        if (!qp->srq) {
                if (!qp->rq.flushed) {
                        dev_dbg(&rcq->hwq.pdev->dev,
                                "FP: Adding to RQ Flush list = %p\n", qp);
                        list_add_tail(&qp->rq_flush, &rcq->rqf_head);
                        qp->rq.flushed = true;
                }
        }
}

static void bnxt_qplib_acquire_cq_flush_locks(struct bnxt_qplib_qp *qp,
                                       unsigned long *flags)
        __acquires(&qp->scq->flush_lock) __acquires(&qp->rcq->flush_lock)
{
        spin_lock_irqsave(&qp->scq->flush_lock, *flags);
        if (qp->scq == qp->rcq)
                __acquire(&qp->rcq->flush_lock);
        else
                spin_lock(&qp->rcq->flush_lock);
}

static void bnxt_qplib_release_cq_flush_locks(struct bnxt_qplib_qp *qp,
                                       unsigned long *flags)
        __releases(&qp->scq->flush_lock) __releases(&qp->rcq->flush_lock)
{
        if (qp->scq == qp->rcq)
                __release(&qp->rcq->flush_lock);
        else
                spin_unlock(&qp->rcq->flush_lock);
        spin_unlock_irqrestore(&qp->scq->flush_lock, *flags);
}

void bnxt_qplib_add_flush_qp(struct bnxt_qplib_qp *qp)
{
        unsigned long flags;

        bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
        __bnxt_qplib_add_flush_qp(qp);
        bnxt_qplib_release_cq_flush_locks(qp, &flags);
}

static void __bnxt_qplib_del_flush_qp(struct bnxt_qplib_qp *qp)
{
        if (qp->sq.flushed) {
                qp->sq.flushed = false;
                list_del(&qp->sq_flush);
        }
        if (!qp->srq) {
                if (qp->rq.flushed) {
                        qp->rq.flushed = false;
                        list_del(&qp->rq_flush);
                }
        }
}

void bnxt_qplib_clean_qp(struct bnxt_qplib_qp *qp)
{
        unsigned long flags;

        bnxt_qplib_acquire_cq_flush_locks(qp, &flags);
        __clean_cq(qp->scq, (u64)(unsigned long)qp);
        qp->sq.hwq.prod = 0;
        qp->sq.hwq.cons = 0;
        __clean_cq(qp->rcq, (u64)(unsigned long)qp);
        qp->rq.hwq.prod = 0;
        qp->rq.hwq.cons = 0;

        __bnxt_qplib_del_flush_qp(qp);
        bnxt_qplib_release_cq_flush_locks(qp, &flags);
}

static void bnxt_qpn_cqn_sched_task(struct work_struct *work)
{
        struct bnxt_qplib_nq_work *nq_work =
                        container_of(work, struct bnxt_qplib_nq_work, work);

        struct bnxt_qplib_cq *cq = nq_work->cq;
        struct bnxt_qplib_nq *nq = nq_work->nq;

        if (cq && nq) {
                spin_lock_bh(&cq->compl_lock);
                if (atomic_read(&cq->arm_state) && nq->cqn_handler) {
                        dev_dbg(&nq->pdev->dev,
                                "%s:Trigger cq  = %p event nq = %p\n",
                                __func__, cq, nq);
                        nq->cqn_handler(nq, cq);
                }
                spin_unlock_bh(&cq->compl_lock);
        }
        kfree(nq_work);
}

static void bnxt_qplib_free_qp_hdr_buf(struct bnxt_qplib_res *res,
                                       struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_q *rq = &qp->rq;
        struct bnxt_qplib_q *sq = &qp->sq;

        if (qp->rq_hdr_buf)
                dma_free_coherent(&res->pdev->dev,
                                  rq->max_wqe * qp->rq_hdr_buf_size,
                                  qp->rq_hdr_buf, qp->rq_hdr_buf_map);
        if (qp->sq_hdr_buf)
                dma_free_coherent(&res->pdev->dev,
                                  sq->max_wqe * qp->sq_hdr_buf_size,
                                  qp->sq_hdr_buf, qp->sq_hdr_buf_map);
        qp->rq_hdr_buf = NULL;
        qp->sq_hdr_buf = NULL;
        qp->rq_hdr_buf_map = 0;
        qp->sq_hdr_buf_map = 0;
        qp->sq_hdr_buf_size = 0;
        qp->rq_hdr_buf_size = 0;
}

static int bnxt_qplib_alloc_qp_hdr_buf(struct bnxt_qplib_res *res,
                                       struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_q *rq = &qp->rq;
        struct bnxt_qplib_q *sq = &qp->sq;
        int rc = 0;

        if (qp->sq_hdr_buf_size && sq->max_wqe) {
                qp->sq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
                                        sq->max_wqe * qp->sq_hdr_buf_size,
                                        &qp->sq_hdr_buf_map, GFP_KERNEL);
                if (!qp->sq_hdr_buf) {
                        rc = -ENOMEM;
                        dev_err(&res->pdev->dev,
                                "Failed to create sq_hdr_buf\n");
                        goto fail;
                }
        }

        if (qp->rq_hdr_buf_size && rq->max_wqe) {
                qp->rq_hdr_buf = dma_alloc_coherent(&res->pdev->dev,
                                                    rq->max_wqe *
                                                    qp->rq_hdr_buf_size,
                                                    &qp->rq_hdr_buf_map,
                                                    GFP_KERNEL);
                if (!qp->rq_hdr_buf) {
                        rc = -ENOMEM;
                        dev_err(&res->pdev->dev,
                                "Failed to create rq_hdr_buf\n");
                        goto fail;
                }
        }
        return 0;

fail:
        bnxt_qplib_free_qp_hdr_buf(res, qp);
        return rc;
}

static void clean_nq(struct bnxt_qplib_nq *nq, struct bnxt_qplib_cq *cq)
{
        struct bnxt_qplib_hwq *hwq = &nq->hwq;
        struct nq_base *nqe, **nq_ptr;
        int budget = nq->budget;
        u32 sw_cons, raw_cons;
        uintptr_t q_handle;
        u16 type;

        spin_lock_bh(&hwq->lock);
        /* Service the NQ until empty */
        raw_cons = hwq->cons;
        while (budget--) {
                sw_cons = HWQ_CMP(raw_cons, hwq);
                nq_ptr = (struct nq_base **)hwq->pbl_ptr;
                nqe = &nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)];
                if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
                        break;

                /*
                 * The valid test of the entry must be done first before
                 * reading any further.
                 */
                dma_rmb();

                type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
                switch (type) {
                case NQ_BASE_TYPE_CQ_NOTIFICATION:
                {
                        struct nq_cn *nqcne = (struct nq_cn *)nqe;

                        q_handle = le32_to_cpu(nqcne->cq_handle_low);
                        q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
                                                     << 32;
                        if ((unsigned long)cq == q_handle) {
                                nqcne->cq_handle_low = 0;
                                nqcne->cq_handle_high = 0;
                                cq->cnq_events++;
                        }
                        break;
                }
                default:
                        break;
                }
                raw_cons++;
        }
        spin_unlock_bh(&hwq->lock);
}

/* Wait for receiving all NQEs for this CQ and clean the NQEs associated with
 * this CQ.
 */
static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events)
{
        u32 retry_cnt = 100;

        while (retry_cnt--) {
                if (cnq_events == cq->cnq_events)
                        return;
                usleep_range(50, 100);
                clean_nq(cq->nq, cq);
        }
}

static void bnxt_qplib_service_nq(unsigned long data)
{
        struct bnxt_qplib_nq *nq = (struct bnxt_qplib_nq *)data;
        struct bnxt_qplib_hwq *hwq = &nq->hwq;
        int num_srqne_processed = 0;
        int num_cqne_processed = 0;
        struct bnxt_qplib_cq *cq;
        int budget = nq->budget;
        u32 sw_cons, raw_cons;
        struct nq_base *nqe;
        uintptr_t q_handle;
        u16 type;

        spin_lock_bh(&hwq->lock);
        /* Service the NQ until empty */
        raw_cons = hwq->cons;
        while (budget--) {
                sw_cons = HWQ_CMP(raw_cons, hwq);
                nqe = bnxt_qplib_get_qe(hwq, sw_cons, NULL);
                if (!NQE_CMP_VALID(nqe, raw_cons, hwq->max_elements))
                        break;

                /*
                 * The valid test of the entry must be done first before
                 * reading any further.
                 */
                dma_rmb();

                type = le16_to_cpu(nqe->info10_type) & NQ_BASE_TYPE_MASK;
                switch (type) {
                case NQ_BASE_TYPE_CQ_NOTIFICATION:
                {
                        struct nq_cn *nqcne = (struct nq_cn *)nqe;

                        q_handle = le32_to_cpu(nqcne->cq_handle_low);
                        q_handle |= (u64)le32_to_cpu(nqcne->cq_handle_high)
                                                     << 32;
                        cq = (struct bnxt_qplib_cq *)(unsigned long)q_handle;
                        if (!cq)
                                break;
                        bnxt_qplib_armen_db(&cq->dbinfo,
                                            DBC_DBC_TYPE_CQ_ARMENA);
                        spin_lock_bh(&cq->compl_lock);
                        atomic_set(&cq->arm_state, 0);
                        if (!nq->cqn_handler(nq, (cq)))
                                num_cqne_processed++;
                        else
                                dev_warn(&nq->pdev->dev,
                                         "cqn - type 0x%x not handled\n", type);
                        cq->cnq_events++;
                        spin_unlock_bh(&cq->compl_lock);
                        break;
                }
                case NQ_BASE_TYPE_SRQ_EVENT:
                {
                        struct bnxt_qplib_srq *srq;
                        struct nq_srq_event *nqsrqe =
                                                (struct nq_srq_event *)nqe;

                        q_handle = le32_to_cpu(nqsrqe->srq_handle_low);
                        q_handle |= (u64)le32_to_cpu(nqsrqe->srq_handle_high)
                                     << 32;
                        srq = (struct bnxt_qplib_srq *)q_handle;
                        bnxt_qplib_armen_db(&srq->dbinfo,
                                            DBC_DBC_TYPE_SRQ_ARMENA);
                        if (!nq->srqn_handler(nq,
                                              (struct bnxt_qplib_srq *)q_handle,
                                              nqsrqe->event))
                                num_srqne_processed++;
                        else
                                dev_warn(&nq->pdev->dev,
                                         "SRQ event 0x%x not handled\n",
                                         nqsrqe->event);
                        break;
                }
                case NQ_BASE_TYPE_DBQ_EVENT:
                        break;
                default:
                        dev_warn(&nq->pdev->dev,
                                 "nqe with type = 0x%x not handled\n", type);
                        break;
                }
                raw_cons++;
        }
        if (hwq->cons != raw_cons) {
                hwq->cons = raw_cons;
                bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);
        }
        spin_unlock_bh(&hwq->lock);
}

static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance)
{
        struct bnxt_qplib_nq *nq = dev_instance;
        struct bnxt_qplib_hwq *hwq = &nq->hwq;
        u32 sw_cons;

        /* Prefetch the NQ element */
        sw_cons = HWQ_CMP(hwq->cons, hwq);
        prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL));

        /* Fan out to CPU affinitized kthreads? */
        tasklet_schedule(&nq->nq_tasklet);

        return IRQ_HANDLED;
}

void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill)
{
        tasklet_disable(&nq->nq_tasklet);
        /* Mask h/w interrupt */
        bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, false);
        /* Sync with last running IRQ handler */
        synchronize_irq(nq->msix_vec);
        if (kill)
                tasklet_kill(&nq->nq_tasklet);
        if (nq->requested) {
                irq_set_affinity_hint(nq->msix_vec, NULL);
                free_irq(nq->msix_vec, nq);
                nq->requested = false;
        }
}

void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
{
        if (nq->cqn_wq) {
                destroy_workqueue(nq->cqn_wq);
                nq->cqn_wq = NULL;
        }

        /* Make sure the HW is stopped! */
        bnxt_qplib_nq_stop_irq(nq, true);

        if (nq->nq_db.reg.bar_reg) {
                iounmap(nq->nq_db.reg.bar_reg);
                nq->nq_db.reg.bar_reg = NULL;
        }

        nq->cqn_handler = NULL;
        nq->srqn_handler = NULL;
        nq->msix_vec = 0;
}

int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx,
                            int msix_vector, bool need_init)
{
        int rc;

        if (nq->requested)
                return -EFAULT;

        nq->msix_vec = msix_vector;
        if (need_init)
                tasklet_init(&nq->nq_tasklet, bnxt_qplib_service_nq,
                             (unsigned long)nq);
        else
                tasklet_enable(&nq->nq_tasklet);

        snprintf(nq->name, sizeof(nq->name), "bnxt_qplib_nq-%d", nq_indx);
        rc = request_irq(nq->msix_vec, bnxt_qplib_nq_irq, 0, nq->name, nq);
        if (rc)
                return rc;

        cpumask_clear(&nq->mask);
        cpumask_set_cpu(nq_indx, &nq->mask);
        rc = irq_set_affinity_hint(nq->msix_vec, &nq->mask);
        if (rc) {
                dev_warn(&nq->pdev->dev,
                         "set affinity failed; vector: %d nq_idx: %d\n",
                         nq->msix_vec, nq_indx);
        }
        nq->requested = true;
        bnxt_qplib_ring_nq_db(&nq->nq_db.dbinfo, nq->res->cctx, true);

        return rc;
}

static int bnxt_qplib_map_nq_db(struct bnxt_qplib_nq *nq,  u32 reg_offt)
{
        resource_size_t reg_base;
        struct bnxt_qplib_nq_db *nq_db;
        struct pci_dev *pdev;
        int rc = 0;

        pdev = nq->pdev;
        nq_db = &nq->nq_db;

        nq_db->reg.bar_id = NQ_CONS_PCI_BAR_REGION;
        nq_db->reg.bar_base = pci_resource_start(pdev, nq_db->reg.bar_id);
        if (!nq_db->reg.bar_base) {
                dev_err(&pdev->dev, "QPLIB: NQ BAR region %d resc start is 0!",
                        nq_db->reg.bar_id);
                rc = -ENOMEM;
                goto fail;
        }

        reg_base = nq_db->reg.bar_base + reg_offt;
        /* Unconditionally map 8 bytes to support 57500 series */
        nq_db->reg.len = 8;
        nq_db->reg.bar_reg = ioremap(reg_base, nq_db->reg.len);
        if (!nq_db->reg.bar_reg) {
                dev_err(&pdev->dev, "QPLIB: NQ BAR region %d mapping failed",
                        nq_db->reg.bar_id);
                rc = -ENOMEM;
                goto fail;
        }

        nq_db->dbinfo.db = nq_db->reg.bar_reg;
        nq_db->dbinfo.hwq = &nq->hwq;
        nq_db->dbinfo.xid = nq->ring_id;
fail:
        return rc;
}

int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
                         int nq_idx, int msix_vector, int bar_reg_offset,
                         cqn_handler_t cqn_handler,
                         srqn_handler_t srqn_handler)
{
        int rc = -1;

        nq->pdev = pdev;
        nq->cqn_handler = cqn_handler;
        nq->srqn_handler = srqn_handler;

        /* Have a task to schedule CQ notifiers in post send case */
        nq->cqn_wq  = create_singlethread_workqueue("bnxt_qplib_nq");
        if (!nq->cqn_wq)
                return -ENOMEM;

        rc = bnxt_qplib_map_nq_db(nq, bar_reg_offset);
        if (rc)
                goto fail;

        rc = bnxt_qplib_nq_start_irq(nq, nq_idx, msix_vector, true);
        if (rc) {
                dev_err(&nq->pdev->dev,
                        "Failed to request irq for nq-idx %d\n", nq_idx);
                goto fail;
        }

        return 0;
fail:
        bnxt_qplib_disable_nq(nq);
        return rc;
}

void bnxt_qplib_free_nq(struct bnxt_qplib_nq *nq)
{
        if (nq->hwq.max_elements) {
                bnxt_qplib_free_hwq(nq->res, &nq->hwq);
                nq->hwq.max_elements = 0;
        }
}

int bnxt_qplib_alloc_nq(struct bnxt_qplib_res *res, struct bnxt_qplib_nq *nq)
{
        struct bnxt_qplib_hwq_attr hwq_attr = {};
        struct bnxt_qplib_sg_info sginfo = {};

        nq->pdev = res->pdev;
        nq->res = res;
        if (!nq->hwq.max_elements ||
            nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
                nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;

        sginfo.pgsize = PAGE_SIZE;
        sginfo.pgshft = PAGE_SHIFT;
        hwq_attr.res = res;
        hwq_attr.sginfo = &sginfo;
        hwq_attr.depth = nq->hwq.max_elements;
        hwq_attr.stride = sizeof(struct nq_base);
        hwq_attr.type = bnxt_qplib_get_hwq_type(nq->res);
        if (bnxt_qplib_alloc_init_hwq(&nq->hwq, &hwq_attr)) {
                dev_err(&nq->pdev->dev, "FP NQ allocation failed");
                return -ENOMEM;
        }
        nq->budget = 8;
        return 0;
}

/* SRQ */
void bnxt_qplib_destroy_srq(struct bnxt_qplib_res *res,
                           struct bnxt_qplib_srq *srq)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_destroy_srq req;
        struct creq_destroy_srq_resp resp;
        u16 cmd_flags = 0;
        int rc;

        RCFW_CMD_PREP(req, DESTROY_SRQ, cmd_flags);

        /* Configure the request */
        req.srq_cid = cpu_to_le32(srq->id);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (struct cmdq_base *)&req,
                                          (struct creq_base *)&resp, NULL, 0);
        kfree(srq->swq);
        if (rc)
                return;
        bnxt_qplib_free_hwq(res, &srq->hwq);
}

int bnxt_qplib_create_srq(struct bnxt_qplib_res *res,
                          struct bnxt_qplib_srq *srq)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct bnxt_qplib_hwq_attr hwq_attr = {};
        struct creq_create_srq_resp resp;
        struct cmdq_create_srq req;
        struct bnxt_qplib_pbl *pbl;
        u16 cmd_flags = 0;
        u16 pg_sz_lvl;
        int rc, idx;

        hwq_attr.res = res;
        hwq_attr.sginfo = &srq->sg_info;
        hwq_attr.depth = srq->max_wqe;
        hwq_attr.stride = srq->wqe_size;
        hwq_attr.type = HWQ_TYPE_QUEUE;
        rc = bnxt_qplib_alloc_init_hwq(&srq->hwq, &hwq_attr);
        if (rc)
                goto exit;

        srq->swq = kcalloc(srq->hwq.max_elements, sizeof(*srq->swq),
                           GFP_KERNEL);
        if (!srq->swq) {
                rc = -ENOMEM;
                goto fail;
        }

        RCFW_CMD_PREP(req, CREATE_SRQ, cmd_flags);

        /* Configure the request */
        req.dpi = cpu_to_le32(srq->dpi->dpi);
        req.srq_handle = cpu_to_le64((uintptr_t)srq);

        req.srq_size = cpu_to_le16((u16)srq->hwq.max_elements);
        pbl = &srq->hwq.pbl[PBL_LVL_0];
        pg_sz_lvl = ((u16)bnxt_qplib_base_pg_size(&srq->hwq) <<
                     CMDQ_CREATE_SRQ_PG_SIZE_SFT);
        pg_sz_lvl |= (srq->hwq.level & CMDQ_CREATE_SRQ_LVL_MASK) <<
                      CMDQ_CREATE_SRQ_LVL_SFT;
        req.pg_size_lvl = cpu_to_le16(pg_sz_lvl);
        req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
        req.pd_id = cpu_to_le32(srq->pd->id);
        req.eventq_id = cpu_to_le16(srq->eventq_hw_ring_id);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                goto fail;

        spin_lock_init(&srq->lock);
        srq->start_idx = 0;
        srq->last_idx = srq->hwq.max_elements - 1;
        for (idx = 0; idx < srq->hwq.max_elements; idx++)
                srq->swq[idx].next_idx = idx + 1;
        srq->swq[srq->last_idx].next_idx = -1;

        srq->id = le32_to_cpu(resp.xid);
        srq->dbinfo.hwq = &srq->hwq;
        srq->dbinfo.xid = srq->id;
        srq->dbinfo.db = srq->dpi->dbr;
        srq->dbinfo.max_slot = 1;
        srq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem;
        if (srq->threshold)
                bnxt_qplib_armen_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ_ARMENA);
        srq->arm_req = false;

        return 0;
fail:
        bnxt_qplib_free_hwq(res, &srq->hwq);
        kfree(srq->swq);
exit:
        return rc;
}

int bnxt_qplib_modify_srq(struct bnxt_qplib_res *res,
                          struct bnxt_qplib_srq *srq)
{
        struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
        u32 sw_prod, sw_cons, count = 0;

        sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
        sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);

        count = sw_prod > sw_cons ? sw_prod - sw_cons :
                                    srq_hwq->max_elements - sw_cons + sw_prod;
        if (count > srq->threshold) {
                srq->arm_req = false;
                bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
        } else {
                /* Deferred arming */
                srq->arm_req = true;
        }

        return 0;
}

int bnxt_qplib_query_srq(struct bnxt_qplib_res *res,
                         struct bnxt_qplib_srq *srq)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_query_srq req;
        struct creq_query_srq_resp resp;
        struct bnxt_qplib_rcfw_sbuf *sbuf;
        struct creq_query_srq_resp_sb *sb;
        u16 cmd_flags = 0;
        int rc = 0;

        RCFW_CMD_PREP(req, QUERY_SRQ, cmd_flags);
        req.srq_cid = cpu_to_le32(srq->id);

        /* Configure the request */
        sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
        if (!sbuf)
                return -ENOMEM;
        sb = sbuf->sb;
        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
                                          (void *)sbuf, 0);
        srq->threshold = le16_to_cpu(sb->srq_limit);
        bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);

        return rc;
}

int bnxt_qplib_post_srq_recv(struct bnxt_qplib_srq *srq,
                             struct bnxt_qplib_swqe *wqe)
{
        struct bnxt_qplib_hwq *srq_hwq = &srq->hwq;
        struct rq_wqe *srqe;
        struct sq_sge *hw_sge;
        u32 sw_prod, sw_cons, count = 0;
        int i, rc = 0, next;

        spin_lock(&srq_hwq->lock);
        if (srq->start_idx == srq->last_idx) {
                dev_err(&srq_hwq->pdev->dev,
                        "FP: SRQ (0x%x) is full!\n", srq->id);
                rc = -EINVAL;
                spin_unlock(&srq_hwq->lock);
                goto done;
        }
        next = srq->start_idx;
        srq->start_idx = srq->swq[next].next_idx;
        spin_unlock(&srq_hwq->lock);

        sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
        srqe = bnxt_qplib_get_qe(srq_hwq, sw_prod, NULL);
        memset(srqe, 0, srq->wqe_size);
        /* Calculate wqe_size16 and data_len */
        for (i = 0, hw_sge = (struct sq_sge *)srqe->data;
             i < wqe->num_sge; i++, hw_sge++) {
                hw_sge->va_or_pa = cpu_to_le64(wqe->sg_list[i].addr);
                hw_sge->l_key = cpu_to_le32(wqe->sg_list[i].lkey);
                hw_sge->size = cpu_to_le32(wqe->sg_list[i].size);
        }
        srqe->wqe_type = wqe->type;
        srqe->flags = wqe->flags;
        srqe->wqe_size = wqe->num_sge +
                        ((offsetof(typeof(*srqe), data) + 15) >> 4);
        srqe->wr_id[0] = cpu_to_le32((u32)next);
        srq->swq[next].wr_id = wqe->wr_id;

        srq_hwq->prod++;

        spin_lock(&srq_hwq->lock);
        sw_prod = HWQ_CMP(srq_hwq->prod, srq_hwq);
        /* retaining srq_hwq->cons for this logic
         * actually the lock is only required to
         * read srq_hwq->cons.
         */
        sw_cons = HWQ_CMP(srq_hwq->cons, srq_hwq);
        count = sw_prod > sw_cons ? sw_prod - sw_cons :
                                    srq_hwq->max_elements - sw_cons + sw_prod;
        spin_unlock(&srq_hwq->lock);
        /* Ring DB */
        bnxt_qplib_ring_prod_db(&srq->dbinfo, DBC_DBC_TYPE_SRQ);
        if (srq->arm_req == true && count > srq->threshold) {
                srq->arm_req = false;
                bnxt_qplib_srq_arm_db(&srq->dbinfo, srq->threshold);
        }
done:
        return rc;
}

/* QP */

static int bnxt_qplib_alloc_init_swq(struct bnxt_qplib_q *que)
{
        int rc = 0;
        int indx;

        que->swq = kcalloc(que->max_wqe, sizeof(*que->swq), GFP_KERNEL);
        if (!que->swq) {
                rc = -ENOMEM;
                goto out;
        }

        que->swq_start = 0;
        que->swq_last = que->max_wqe - 1;
        for (indx = 0; indx < que->max_wqe; indx++)
                que->swq[indx].next_idx = indx + 1;
        que->swq[que->swq_last].next_idx = 0; /* Make it circular */
        que->swq_last = 0;
out:
        return rc;
}

int bnxt_qplib_create_qp1(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_hwq_attr hwq_attr = {};
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct bnxt_qplib_q *sq = &qp->sq;
        struct bnxt_qplib_q *rq = &qp->rq;
        struct creq_create_qp1_resp resp;
        struct cmdq_create_qp1 req;
        struct bnxt_qplib_pbl *pbl;
        u16 cmd_flags = 0;
        u32 qp_flags = 0;
        u8 pg_sz_lvl;
        u32 tbl_indx;
        int rc;

        RCFW_CMD_PREP(req, CREATE_QP1, cmd_flags);

        /* General */
        req.type = qp->type;
        req.dpi = cpu_to_le32(qp->dpi->dpi);
        req.qp_handle = cpu_to_le64(qp->qp_handle);

        /* SQ */
        hwq_attr.res = res;
        hwq_attr.sginfo = &sq->sg_info;
        hwq_attr.stride = sizeof(struct sq_sge);
        hwq_attr.depth = bnxt_qplib_get_depth(sq);
        hwq_attr.type = HWQ_TYPE_QUEUE;
        rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
        if (rc)
                goto exit;

        rc = bnxt_qplib_alloc_init_swq(sq);
        if (rc)
                goto fail_sq;

        req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
        pbl = &sq->hwq.pbl[PBL_LVL_0];
        req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
        pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
                     CMDQ_CREATE_QP1_SQ_PG_SIZE_SFT);
        pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK);
        req.sq_pg_size_sq_lvl = pg_sz_lvl;
        req.sq_fwo_sq_sge =
                cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
                             CMDQ_CREATE_QP1_SQ_SGE_SFT);
        req.scq_cid = cpu_to_le32(qp->scq->id);

        /* RQ */
        if (rq->max_wqe) {
                hwq_attr.res = res;
                hwq_attr.sginfo = &rq->sg_info;
                hwq_attr.stride = sizeof(struct sq_sge);
                hwq_attr.depth = bnxt_qplib_get_depth(rq);
                hwq_attr.type = HWQ_TYPE_QUEUE;
                rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
                if (rc)
                        goto sq_swq;
                rc = bnxt_qplib_alloc_init_swq(rq);
                if (rc)
                        goto fail_rq;
                req.rq_size = cpu_to_le32(rq->max_wqe);
                pbl = &rq->hwq.pbl[PBL_LVL_0];
                req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
                pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
                             CMDQ_CREATE_QP1_RQ_PG_SIZE_SFT);
                pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK);
                req.rq_pg_size_rq_lvl = pg_sz_lvl;
                req.rq_fwo_rq_sge =
                        cpu_to_le16((rq->max_sge &
                                     CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
                                    CMDQ_CREATE_QP1_RQ_SGE_SFT);
        }
        req.rcq_cid = cpu_to_le32(qp->rcq->id);
        /* Header buffer - allow hdr_buf pass in */
        rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
        if (rc) {
                rc = -ENOMEM;
                goto rq_rwq;
        }
        qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;
        req.qp_flags = cpu_to_le32(qp_flags);
        req.pd_id = cpu_to_le32(qp->pd->id);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                goto fail;

        qp->id = le32_to_cpu(resp.xid);
        qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
        qp->cctx = res->cctx;
        sq->dbinfo.hwq = &sq->hwq;
        sq->dbinfo.xid = qp->id;
        sq->dbinfo.db = qp->dpi->dbr;
        sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
        if (rq->max_wqe) {
                rq->dbinfo.hwq = &rq->hwq;
                rq->dbinfo.xid = qp->id;
                rq->dbinfo.db = qp->dpi->dbr;
                rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
        }
        tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
        rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
        rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;

        return 0;

fail:
        bnxt_qplib_free_qp_hdr_buf(res, qp);
rq_rwq:
        kfree(rq->swq);
fail_rq:
        bnxt_qplib_free_hwq(res, &rq->hwq);
sq_swq:
        kfree(sq->swq);
fail_sq:
        bnxt_qplib_free_hwq(res, &sq->hwq);
exit:
        return rc;
}

static void bnxt_qplib_init_psn_ptr(struct bnxt_qplib_qp *qp, int size)
{
        struct bnxt_qplib_hwq *hwq;
        struct bnxt_qplib_q *sq;
        u64 fpsne, psn_pg;
        u16 indx_pad = 0;

        sq = &qp->sq;
        hwq = &sq->hwq;
        /* First psn entry */
        fpsne = (u64)bnxt_qplib_get_qe(hwq, hwq->depth, &psn_pg);
        if (!IS_ALIGNED(fpsne, PAGE_SIZE))
                indx_pad = (fpsne & ~PAGE_MASK) / size;
        hwq->pad_pgofft = indx_pad;
        hwq->pad_pg = (u64 *)psn_pg;
        hwq->pad_stride = size;
}

int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct bnxt_qplib_hwq_attr hwq_attr = {};
        struct bnxt_qplib_sg_info sginfo = {};
        struct bnxt_qplib_q *sq = &qp->sq;
        struct bnxt_qplib_q *rq = &qp->rq;
        struct creq_create_qp_resp resp;
        int rc, req_size, psn_sz = 0;
        struct bnxt_qplib_hwq *xrrq;
        struct bnxt_qplib_pbl *pbl;
        struct cmdq_create_qp req;
        u16 cmd_flags = 0;
        u32 qp_flags = 0;
        u8 pg_sz_lvl;
        u32 tbl_indx;
        u16 nsge;

        RCFW_CMD_PREP(req, CREATE_QP, cmd_flags);

        /* General */
        req.type = qp->type;
        req.dpi = cpu_to_le32(qp->dpi->dpi);
        req.qp_handle = cpu_to_le64(qp->qp_handle);

        /* SQ */
        if (qp->type == CMDQ_CREATE_QP_TYPE_RC) {
                psn_sz = bnxt_qplib_is_chip_gen_p5(res->cctx) ?
                         sizeof(struct sq_psn_search_ext) :
                         sizeof(struct sq_psn_search);
        }

        hwq_attr.res = res;
        hwq_attr.sginfo = &sq->sg_info;
        hwq_attr.stride = sizeof(struct sq_sge);
        hwq_attr.depth = bnxt_qplib_get_depth(sq);
        hwq_attr.aux_stride = psn_sz;
        hwq_attr.aux_depth = bnxt_qplib_set_sq_size(sq, qp->wqe_mode);
        hwq_attr.type = HWQ_TYPE_QUEUE;
        rc = bnxt_qplib_alloc_init_hwq(&sq->hwq, &hwq_attr);
        if (rc)
                goto exit;

        rc = bnxt_qplib_alloc_init_swq(sq);
        if (rc)
                goto fail_sq;

        if (psn_sz)
                bnxt_qplib_init_psn_ptr(qp, psn_sz);

        req.sq_size = cpu_to_le32(bnxt_qplib_set_sq_size(sq, qp->wqe_mode));
        pbl = &sq->hwq.pbl[PBL_LVL_0];

        req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
        pg_sz_lvl = (bnxt_qplib_base_pg_size(&sq->hwq) <<
                     CMDQ_CREATE_QP_SQ_PG_SIZE_SFT);
        pg_sz_lvl |= (sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK);
        req.sq_pg_size_sq_lvl = pg_sz_lvl;
        req.sq_fwo_sq_sge =
                cpu_to_le16(((sq->max_sge & CMDQ_CREATE_QP_SQ_SGE_MASK) <<
                             CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
        req.scq_cid = cpu_to_le32(qp->scq->id);

        /* RQ */
        if (!qp->srq) {
                hwq_attr.res = res;
                hwq_attr.sginfo = &rq->sg_info;
                hwq_attr.stride = sizeof(struct sq_sge);
                hwq_attr.depth = bnxt_qplib_get_depth(rq);
                hwq_attr.aux_stride = 0;
                hwq_attr.aux_depth = 0;
                hwq_attr.type = HWQ_TYPE_QUEUE;
                rc = bnxt_qplib_alloc_init_hwq(&rq->hwq, &hwq_attr);
                if (rc)
                        goto sq_swq;
                rc = bnxt_qplib_alloc_init_swq(rq);
                if (rc)
                        goto fail_rq;

                req.rq_size = cpu_to_le32(rq->max_wqe);
                pbl = &rq->hwq.pbl[PBL_LVL_0];
                req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
                pg_sz_lvl = (bnxt_qplib_base_pg_size(&rq->hwq) <<
                             CMDQ_CREATE_QP_RQ_PG_SIZE_SFT);
                pg_sz_lvl |= (rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK);
                req.rq_pg_size_rq_lvl = pg_sz_lvl;
                nsge = (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
                        6 : rq->max_sge;
                req.rq_fwo_rq_sge =
                        cpu_to_le16(((nsge &
                                      CMDQ_CREATE_QP_RQ_SGE_MASK) <<
                                     CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
        } else {
                /* SRQ */
                qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_SRQ_USED;
                req.srq_cid = cpu_to_le32(qp->srq->id);
        }
        req.rcq_cid = cpu_to_le32(qp->rcq->id);

        qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_RESERVED_LKEY_ENABLE;
        qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FR_PMR_ENABLED;
        if (qp->sig_type)
                qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_FORCE_COMPLETION;
        if (qp->wqe_mode == BNXT_QPLIB_WQE_MODE_VARIABLE)
                qp_flags |= CMDQ_CREATE_QP_QP_FLAGS_VARIABLE_SIZED_WQE_ENABLED;
        req.qp_flags = cpu_to_le32(qp_flags);

        /* ORRQ and IRRQ */
        if (psn_sz) {
                xrrq = &qp->orrq;
                xrrq->max_elements =
                        ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);
                req_size = xrrq->max_elements *
                           BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE + PAGE_SIZE - 1;
                req_size &= ~(PAGE_SIZE - 1);
                sginfo.pgsize = req_size;
                sginfo.pgshft = PAGE_SHIFT;

                hwq_attr.res = res;
                hwq_attr.sginfo = &sginfo;
                hwq_attr.depth = xrrq->max_elements;
                hwq_attr.stride = BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE;
                hwq_attr.aux_stride = 0;
                hwq_attr.aux_depth = 0;
                hwq_attr.type = HWQ_TYPE_CTX;
                rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
                if (rc)
                        goto rq_swq;
                pbl = &xrrq->pbl[PBL_LVL_0];
                req.orrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);

                xrrq = &qp->irrq;
                xrrq->max_elements = IRD_LIMIT_TO_IRRQ_SLOTS(
                                                qp->max_dest_rd_atomic);
                req_size = xrrq->max_elements *
                           BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE + PAGE_SIZE - 1;
                req_size &= ~(PAGE_SIZE - 1);
                sginfo.pgsize = req_size;
                hwq_attr.depth =  xrrq->max_elements;
                hwq_attr.stride = BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE;
                rc = bnxt_qplib_alloc_init_hwq(xrrq, &hwq_attr);
                if (rc)
                        goto fail_orrq;

                pbl = &xrrq->pbl[PBL_LVL_0];
                req.irrq_addr = cpu_to_le64(pbl->pg_map_arr[0]);
        }
        req.pd_id = cpu_to_le32(qp->pd->id);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                goto fail;

        qp->id = le32_to_cpu(resp.xid);
        qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
        INIT_LIST_HEAD(&qp->sq_flush);
        INIT_LIST_HEAD(&qp->rq_flush);
        qp->cctx = res->cctx;
        sq->dbinfo.hwq = &sq->hwq;
        sq->dbinfo.xid = qp->id;
        sq->dbinfo.db = qp->dpi->dbr;
        sq->dbinfo.max_slot = bnxt_qplib_set_sq_max_slot(qp->wqe_mode);
        if (rq->max_wqe) {
                rq->dbinfo.hwq = &rq->hwq;
                rq->dbinfo.xid = qp->id;
                rq->dbinfo.db = qp->dpi->dbr;
                rq->dbinfo.max_slot = bnxt_qplib_set_rq_max_slot(rq->wqe_size);
        }
        tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
        rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
        rcfw->qp_tbl[tbl_indx].qp_handle = (void *)qp;

        return 0;
fail:
        bnxt_qplib_free_hwq(res, &qp->irrq);
fail_orrq:
        bnxt_qplib_free_hwq(res, &qp->orrq);
rq_swq:
        kfree(rq->swq);
fail_rq:
        bnxt_qplib_free_hwq(res, &rq->hwq);
sq_swq:
        kfree(sq->swq);
fail_sq:
        bnxt_qplib_free_hwq(res, &sq->hwq);
exit:
        return rc;
}

static void __modify_flags_from_init_state(struct bnxt_qplib_qp *qp)
{
        switch (qp->state) {
        case CMDQ_MODIFY_QP_NEW_STATE_RTR:
                /* INIT->RTR, configure the path_mtu to the default
                 * 2048 if not being requested
                 */
                if (!(qp->modify_flags &
                    CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)) {
                        qp->modify_flags |=
                                CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU;
                        qp->path_mtu =
                                CMDQ_MODIFY_QP_PATH_MTU_MTU_2048;
                }
                qp->modify_flags &=
                        ~CMDQ_MODIFY_QP_MODIFY_MASK_VLAN_ID;
                /* Bono FW require the max_dest_rd_atomic to be >= 1 */
                if (qp->max_dest_rd_atomic < 1)
                        qp->max_dest_rd_atomic = 1;
                qp->modify_flags &= ~CMDQ_MODIFY_QP_MODIFY_MASK_SRC_MAC;
                /* Bono FW 20.6.5 requires SGID_INDEX configuration */
                if (!(qp->modify_flags &
                    CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)) {
                        qp->modify_flags |=
                                CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX;
                        qp->ah.sgid_index = 0;
                }
                break;
        default:
                break;
        }
}

static void __modify_flags_from_rtr_state(struct bnxt_qplib_qp *qp)
{
        switch (qp->state) {
        case CMDQ_MODIFY_QP_NEW_STATE_RTS:
                /* Bono FW requires the max_rd_atomic to be >= 1 */
                if (qp->max_rd_atomic < 1)
                        qp->max_rd_atomic = 1;
                /* Bono FW does not allow PKEY_INDEX,
                 * DGID, FLOW_LABEL, SGID_INDEX, HOP_LIMIT,
                 * TRAFFIC_CLASS, DEST_MAC, PATH_MTU, RQ_PSN,
                 * MIN_RNR_TIMER, MAX_DEST_RD_ATOMIC, DEST_QP_ID
                 * modification
                 */
                qp->modify_flags &=
                        ~(CMDQ_MODIFY_QP_MODIFY_MASK_PKEY |
                          CMDQ_MODIFY_QP_MODIFY_MASK_DGID |
                          CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL |
                          CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX |
                          CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT |
                          CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS |
                          CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC |
                          CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU |
                          CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN |
                          CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER |
                          CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC |
                          CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID);
                break;
        default:
                break;
        }
}

static void __filter_modify_flags(struct bnxt_qplib_qp *qp)
{
        switch (qp->cur_qp_state) {
        case CMDQ_MODIFY_QP_NEW_STATE_RESET:
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_INIT:
                __modify_flags_from_init_state(qp);
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_RTR:
                __modify_flags_from_rtr_state(qp);
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_RTS:
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_SQD:
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_SQE:
                break;
        case CMDQ_MODIFY_QP_NEW_STATE_ERR:
                break;
        default:
                break;
        }
}

int bnxt_qplib_modify_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_modify_qp req;
        struct creq_modify_qp_resp resp;
        u16 cmd_flags = 0, pkey;
        u32 temp32[4];
        u32 bmask;
        int rc;

        RCFW_CMD_PREP(req, MODIFY_QP, cmd_flags);

        /* Filter out the qp_attr_mask based on the state->new transition */
        __filter_modify_flags(qp);
        bmask = qp->modify_flags;
        req.modify_mask = cpu_to_le32(qp->modify_flags);
        req.qp_cid = cpu_to_le32(qp->id);
        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_STATE) {
                req.network_type_en_sqd_async_notify_new_state =
                                (qp->state & CMDQ_MODIFY_QP_NEW_STATE_MASK) |
                                (qp->en_sqd_async_notify ?
                                        CMDQ_MODIFY_QP_EN_SQD_ASYNC_NOTIFY : 0);
        }
        req.network_type_en_sqd_async_notify_new_state |= qp->nw_type;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS)
                req.access = qp->access;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PKEY) {
                if (!bnxt_qplib_get_pkey(res, &res->pkey_tbl,
                                         qp->pkey_index, &pkey))
                        req.pkey = cpu_to_le16(pkey);
        }
        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_QKEY)
                req.qkey = cpu_to_le32(qp->qkey);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DGID) {
                memcpy(temp32, qp->ah.dgid.data, sizeof(struct bnxt_qplib_gid));
                req.dgid[0] = cpu_to_le32(temp32[0]);
                req.dgid[1] = cpu_to_le32(temp32[1]);
                req.dgid[2] = cpu_to_le32(temp32[2]);
                req.dgid[3] = cpu_to_le32(temp32[3]);
        }
        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_FLOW_LABEL)
                req.flow_label = cpu_to_le32(qp->ah.flow_label);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SGID_INDEX)
                req.sgid_index = cpu_to_le16(res->sgid_tbl.hw_id
                                             [qp->ah.sgid_index]);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_HOP_LIMIT)
                req.hop_limit = qp->ah.hop_limit;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TRAFFIC_CLASS)
                req.traffic_class = qp->ah.traffic_class;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_MAC)
                memcpy(req.dest_mac, qp->ah.dmac, 6);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_PATH_MTU)
                req.path_mtu = qp->path_mtu;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_TIMEOUT)
                req.timeout = qp->timeout;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RETRY_CNT)
                req.retry_cnt = qp->retry_cnt;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RNR_RETRY)
                req.rnr_retry = qp->rnr_retry;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MIN_RNR_TIMER)
                req.min_rnr_timer = qp->min_rnr_timer;

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_RQ_PSN)
                req.rq_psn = cpu_to_le32(qp->rq.psn);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_SQ_PSN)
                req.sq_psn = cpu_to_le32(qp->sq.psn);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_RD_ATOMIC)
                req.max_rd_atomic =
                        ORD_LIMIT_TO_ORRQ_SLOTS(qp->max_rd_atomic);

        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_MAX_DEST_RD_ATOMIC)
                req.max_dest_rd_atomic =
                        IRD_LIMIT_TO_IRRQ_SLOTS(qp->max_dest_rd_atomic);

        req.sq_size = cpu_to_le32(qp->sq.hwq.max_elements);
        req.rq_size = cpu_to_le32(qp->rq.hwq.max_elements);
        req.sq_sge = cpu_to_le16(qp->sq.max_sge);
        req.rq_sge = cpu_to_le16(qp->rq.max_sge);
        req.max_inline_data = cpu_to_le32(qp->max_inline_data);
        if (bmask & CMDQ_MODIFY_QP_MODIFY_MASK_DEST_QP_ID)
                req.dest_qp_id = cpu_to_le32(qp->dest_qpn);

        req.vlan_pcp_vlan_dei_vlan_id = cpu_to_le16(qp->vlan_id);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                return rc;
        qp->cur_qp_state = qp->state;
        return 0;
}

int bnxt_qplib_query_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_query_qp req;
        struct creq_query_qp_resp resp;
        struct bnxt_qplib_rcfw_sbuf *sbuf;
        struct creq_query_qp_resp_sb *sb;
        u16 cmd_flags = 0;
        u32 temp32[4];
        int i, rc = 0;

        RCFW_CMD_PREP(req, QUERY_QP, cmd_flags);

        sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
        if (!sbuf)
                return -ENOMEM;
        sb = sbuf->sb;

        req.qp_cid = cpu_to_le32(qp->id);
        req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
                                          (void *)sbuf, 0);
        if (rc)
                goto bail;
        /* Extract the context from the side buffer */
        qp->state = sb->en_sqd_async_notify_state &
                        CREQ_QUERY_QP_RESP_SB_STATE_MASK;
        qp->en_sqd_async_notify = sb->en_sqd_async_notify_state &
                                  CREQ_QUERY_QP_RESP_SB_EN_SQD_ASYNC_NOTIFY ?
                                  true : false;
        qp->access = sb->access;
        qp->pkey_index = le16_to_cpu(sb->pkey);
        qp->qkey = le32_to_cpu(sb->qkey);

        temp32[0] = le32_to_cpu(sb->dgid[0]);
        temp32[1] = le32_to_cpu(sb->dgid[1]);
        temp32[2] = le32_to_cpu(sb->dgid[2]);
        temp32[3] = le32_to_cpu(sb->dgid[3]);
        memcpy(qp->ah.dgid.data, temp32, sizeof(qp->ah.dgid.data));

        qp->ah.flow_label = le32_to_cpu(sb->flow_label);

        qp->ah.sgid_index = 0;
        for (i = 0; i < res->sgid_tbl.max; i++) {
                if (res->sgid_tbl.hw_id[i] == le16_to_cpu(sb->sgid_index)) {
                        qp->ah.sgid_index = i;
                        break;
                }
        }
        if (i == res->sgid_tbl.max)
                dev_warn(&res->pdev->dev, "SGID not found??\n");

        qp->ah.hop_limit = sb->hop_limit;
        qp->ah.traffic_class = sb->traffic_class;
        memcpy(qp->ah.dmac, sb->dest_mac, 6);
        qp->ah.vlan_id = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
                                CREQ_QUERY_QP_RESP_SB_VLAN_ID_MASK) >>
                                CREQ_QUERY_QP_RESP_SB_VLAN_ID_SFT;
        qp->path_mtu = (le16_to_cpu(sb->path_mtu_dest_vlan_id) &
                                    CREQ_QUERY_QP_RESP_SB_PATH_MTU_MASK) >>
                                    CREQ_QUERY_QP_RESP_SB_PATH_MTU_SFT;
        qp->timeout = sb->timeout;
        qp->retry_cnt = sb->retry_cnt;
        qp->rnr_retry = sb->rnr_retry;
        qp->min_rnr_timer = sb->min_rnr_timer;
        qp->rq.psn = le32_to_cpu(sb->rq_psn);
        qp->max_rd_atomic = ORRQ_SLOTS_TO_ORD_LIMIT(sb->max_rd_atomic);
        qp->sq.psn = le32_to_cpu(sb->sq_psn);
        qp->max_dest_rd_atomic =
                        IRRQ_SLOTS_TO_IRD_LIMIT(sb->max_dest_rd_atomic);
        qp->sq.max_wqe = qp->sq.hwq.max_elements;
        qp->rq.max_wqe = qp->rq.hwq.max_elements;
        qp->sq.max_sge = le16_to_cpu(sb->sq_sge);
        qp->rq.max_sge = le16_to_cpu(sb->rq_sge);
        qp->max_inline_data = le32_to_cpu(sb->max_inline_data);
        qp->dest_qpn = le32_to_cpu(sb->dest_qp_id);
        memcpy(qp->smac, sb->src_mac, 6);
        qp->vlan_id = le16_to_cpu(sb->vlan_pcp_vlan_dei_vlan_id);
bail:
        bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
        return rc;
}

static void __clean_cq(struct bnxt_qplib_cq *cq, u64 qp)
{
        struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
        struct cq_base *hw_cqe;
        int i;

        for (i = 0; i < cq_hwq->max_elements; i++) {
                hw_cqe = bnxt_qplib_get_qe(cq_hwq, i, NULL);
                if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements))
                        continue;
                /*
                 * The valid test of the entry must be done first before
                 * reading any further.
                 */
                dma_rmb();
                switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
                case CQ_BASE_CQE_TYPE_REQ:
                case CQ_BASE_CQE_TYPE_TERMINAL:
                {
                        struct cq_req *cqe = (struct cq_req *)hw_cqe;

                        if (qp == le64_to_cpu(cqe->qp_handle))
                                cqe->qp_handle = 0;
                        break;
                }
                case CQ_BASE_CQE_TYPE_RES_RC:
                case CQ_BASE_CQE_TYPE_RES_UD:
                case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
                {
                        struct cq_res_rc *cqe = (struct cq_res_rc *)hw_cqe;

                        if (qp == le64_to_cpu(cqe->qp_handle))
                                cqe->qp_handle = 0;
                        break;
                }
                default:
                        break;
                }
        }
}

int bnxt_qplib_destroy_qp(struct bnxt_qplib_res *res,
                          struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_destroy_qp req;
        struct creq_destroy_qp_resp resp;
        u16 cmd_flags = 0;
        u32 tbl_indx;
        int rc;

        tbl_indx = map_qp_id_to_tbl_indx(qp->id, rcfw);
        rcfw->qp_tbl[tbl_indx].qp_id = BNXT_QPLIB_QP_ID_INVALID;
        rcfw->qp_tbl[tbl_indx].qp_handle = NULL;

        RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags);

        req.qp_cid = cpu_to_le32(qp->id);
        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc) {
                rcfw->qp_tbl[tbl_indx].qp_id = qp->id;
                rcfw->qp_tbl[tbl_indx].qp_handle = qp;
                return rc;
        }

        return 0;
}

void bnxt_qplib_free_qp_res(struct bnxt_qplib_res *res,
                            struct bnxt_qplib_qp *qp)
{
        bnxt_qplib_free_qp_hdr_buf(res, qp);
        bnxt_qplib_free_hwq(res, &qp->sq.hwq);
        kfree(qp->sq.swq);

        bnxt_qplib_free_hwq(res, &qp->rq.hwq);
        kfree(qp->rq.swq);

        if (qp->irrq.max_elements)
                bnxt_qplib_free_hwq(res, &qp->irrq);
        if (qp->orrq.max_elements)
                bnxt_qplib_free_hwq(res, &qp->orrq);

}

void *bnxt_qplib_get_qp1_sq_buf(struct bnxt_qplib_qp *qp,
                                struct bnxt_qplib_sge *sge)
{
        struct bnxt_qplib_q *sq = &qp->sq;
        u32 sw_prod;

        memset(sge, 0, sizeof(*sge));

        if (qp->sq_hdr_buf) {
                sw_prod = sq->swq_start;
                sge->addr = (dma_addr_t)(qp->sq_hdr_buf_map +
                                         sw_prod * qp->sq_hdr_buf_size);
                sge->lkey = 0xFFFFFFFF;
                sge->size = qp->sq_hdr_buf_size;
                return qp->sq_hdr_buf + sw_prod * sge->size;
        }
        return NULL;
}

u32 bnxt_qplib_get_rq_prod_index(struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_q *rq = &qp->rq;

        return rq->swq_start;
}

dma_addr_t bnxt_qplib_get_qp_buf_from_index(struct bnxt_qplib_qp *qp, u32 index)
{
        return (qp->rq_hdr_buf_map + index * qp->rq_hdr_buf_size);
}

void *bnxt_qplib_get_qp1_rq_buf(struct bnxt_qplib_qp *qp,
                                struct bnxt_qplib_sge *sge)
{
        struct bnxt_qplib_q *rq = &qp->rq;
        u32 sw_prod;

        memset(sge, 0, sizeof(*sge));

        if (qp->rq_hdr_buf) {
                sw_prod = rq->swq_start;
                sge->addr = (dma_addr_t)(qp->rq_hdr_buf_map +
                                         sw_prod * qp->rq_hdr_buf_size);
                sge->lkey = 0xFFFFFFFF;
                sge->size = qp->rq_hdr_buf_size;
                return qp->rq_hdr_buf + sw_prod * sge->size;
        }
        return NULL;
}

static void bnxt_qplib_fill_psn_search(struct bnxt_qplib_qp *qp,
                                       struct bnxt_qplib_swqe *wqe,
                                       struct bnxt_qplib_swq *swq)
{
        struct sq_psn_search_ext *psns_ext;
        struct sq_psn_search *psns;
        u32 flg_npsn;
        u32 op_spsn;

        if (!swq->psn_search)
                return;
        psns = swq->psn_search;
        psns_ext = swq->psn_ext;

        op_spsn = ((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
                    SQ_PSN_SEARCH_START_PSN_MASK);
        op_spsn |= ((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
                     SQ_PSN_SEARCH_OPCODE_MASK);
        flg_npsn = ((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
                     SQ_PSN_SEARCH_NEXT_PSN_MASK);

        if (bnxt_qplib_is_chip_gen_p5(qp->cctx)) {
                psns_ext->opcode_start_psn = cpu_to_le32(op_spsn);
                psns_ext->flags_next_psn = cpu_to_le32(flg_npsn);
                psns_ext->start_slot_idx = cpu_to_le16(swq->slot_idx);
        } else {
                psns->opcode_start_psn = cpu_to_le32(op_spsn);
                psns->flags_next_psn = cpu_to_le32(flg_npsn);
        }
}

static int bnxt_qplib_put_inline(struct bnxt_qplib_qp *qp,
                                 struct bnxt_qplib_swqe *wqe,
                                 u16 *idx)
{
        struct bnxt_qplib_hwq *hwq;
        int len, t_len, offt;
        bool pull_dst = true;
        void *il_dst = NULL;
        void *il_src = NULL;
        int t_cplen, cplen;
        int indx;

        hwq = &qp->sq.hwq;
        t_len = 0;
        for (indx = 0; indx < wqe->num_sge; indx++) {
                len = wqe->sg_list[indx].size;
                il_src = (void *)wqe->sg_list[indx].addr;
                t_len += len;
                if (t_len > qp->max_inline_data)
                        goto bad;
                while (len) {
                        if (pull_dst) {
                                pull_dst = false;
                                il_dst = bnxt_qplib_get_prod_qe(hwq, *idx);
                                (*idx)++;
                                t_cplen = 0;
                                offt = 0;
                        }
                        cplen = min_t(int, len, sizeof(struct sq_sge));
                        cplen = min_t(int, cplen,
                                        (sizeof(struct sq_sge) - offt));
                        memcpy(il_dst, il_src, cplen);
                        t_cplen += cplen;
                        il_src += cplen;
                        il_dst += cplen;
                        offt += cplen;
                        len -= cplen;
                        if (t_cplen == sizeof(struct sq_sge))
                                pull_dst = true;
                }
        }

        return t_len;
bad:
        return -ENOMEM;
}

static u32 bnxt_qplib_put_sges(struct bnxt_qplib_hwq *hwq,
                               struct bnxt_qplib_sge *ssge,
                               u16 nsge, u16 *idx)
{
        struct sq_sge *dsge;
        int indx, len = 0;

        for (indx = 0; indx < nsge; indx++, (*idx)++) {
                dsge = bnxt_qplib_get_prod_qe(hwq, *idx);
                dsge->va_or_pa = cpu_to_le64(ssge[indx].addr);
                dsge->l_key = cpu_to_le32(ssge[indx].lkey);
                dsge->size = cpu_to_le32(ssge[indx].size);
                len += ssge[indx].size;
        }

        return len;
}

static u16 bnxt_qplib_required_slots(struct bnxt_qplib_qp *qp,
                                     struct bnxt_qplib_swqe *wqe,
                                     u16 *wqe_sz, u16 *qdf, u8 mode)
{
        u32 ilsize, bytes;
        u16 nsge;
        u16 slot;

        nsge = wqe->num_sge;
        /* Adding sq_send_hdr is a misnomer, for rq also hdr size is same. */
        bytes = sizeof(struct sq_send_hdr) + nsge * sizeof(struct sq_sge);
        if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
                ilsize = bnxt_qplib_calc_ilsize(wqe, qp->max_inline_data);
                bytes = ALIGN(ilsize, sizeof(struct sq_sge));
                bytes += sizeof(struct sq_send_hdr);
        }

        *qdf =  __xlate_qfd(qp->sq.q_full_delta, bytes);
        slot = bytes >> 4;
        *wqe_sz = slot;
        if (mode == BNXT_QPLIB_WQE_MODE_STATIC)
                slot = 8;
        return slot;
}

static void bnxt_qplib_pull_psn_buff(struct bnxt_qplib_q *sq,
                                     struct bnxt_qplib_swq *swq)
{
        struct bnxt_qplib_hwq *hwq;
        u32 pg_num, pg_indx;
        void *buff;
        u32 tail;

        hwq = &sq->hwq;
        if (!hwq->pad_pg)
                return;
        tail = swq->slot_idx / sq->dbinfo.max_slot;
        pg_num = (tail + hwq->pad_pgofft) / (PAGE_SIZE / hwq->pad_stride);
        pg_indx = (tail + hwq->pad_pgofft) % (PAGE_SIZE / hwq->pad_stride);
        buff = (void *)(hwq->pad_pg[pg_num] + pg_indx * hwq->pad_stride);
        swq->psn_ext = buff;
        swq->psn_search = buff;
}

void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_q *sq = &qp->sq;

        bnxt_qplib_ring_prod_db(&sq->dbinfo, DBC_DBC_TYPE_SQ);
}

int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
                         struct bnxt_qplib_swqe *wqe)
{
        struct bnxt_qplib_nq_work *nq_work = NULL;
        int i, rc = 0, data_len = 0, pkt_num = 0;
        struct bnxt_qplib_q *sq = &qp->sq;
        struct bnxt_qplib_hwq *hwq;
        struct bnxt_qplib_swq *swq;
        bool sch_handler = false;
        u16 wqe_sz, qdf = 0;
        void *base_hdr;
        void *ext_hdr;
        __le32 temp32;
        u32 wqe_idx;
        u32 slots;
        u16 idx;

        hwq = &sq->hwq;
        if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS &&
            qp->state != CMDQ_MODIFY_QP_NEW_STATE_ERR) {
                dev_err(&hwq->pdev->dev,
                        "QPLIB: FP: QP (0x%x) is in the 0x%x state",
                        qp->id, qp->state);
                rc = -EINVAL;
                goto done;
        }

        slots = bnxt_qplib_required_slots(qp, wqe, &wqe_sz, &qdf, qp->wqe_mode);
        if (bnxt_qplib_queue_full(sq, slots + qdf)) {
                dev_err(&hwq->pdev->dev,
                        "prod = %#x cons = %#x qdepth = %#x delta = %#x\n",
                        hwq->prod, hwq->cons, hwq->depth, sq->q_full_delta);
                rc = -ENOMEM;
                goto done;
        }

        swq = bnxt_qplib_get_swqe(sq, &wqe_idx);
        bnxt_qplib_pull_psn_buff(sq, swq);

        idx = 0;
        swq->slot_idx = hwq->prod;
        swq->slots = slots;
        swq->wr_id = wqe->wr_id;
        swq->type = wqe->type;
        swq->flags = wqe->flags;
        swq->start_psn = sq->psn & BTH_PSN_MASK;
        if (qp->sig_type)
                swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;

        if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
                sch_handler = true;
                dev_dbg(&hwq->pdev->dev,
                        "%s Error QP. Scheduling for poll_cq\n", __func__);
                goto queue_err;
        }

        base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
        ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
        memset(base_hdr, 0, sizeof(struct sq_sge));
        memset(ext_hdr, 0, sizeof(struct sq_sge));

        if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE)
                /* Copy the inline data */
                data_len = bnxt_qplib_put_inline(qp, wqe, &idx);
        else
                data_len = bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge,
                                               &idx);
        if (data_len < 0)
                goto queue_err;
        /* Specifics */
        switch (wqe->type) {
        case BNXT_QPLIB_SWQE_TYPE_SEND:
                if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
                        struct sq_send_raweth_qp1_hdr *sqe = base_hdr;
                        struct sq_raw_ext_hdr *ext_sqe = ext_hdr;
                        /* Assemble info for Raw Ethertype QPs */

                        sqe->wqe_type = wqe->type;
                        sqe->flags = wqe->flags;
                        sqe->wqe_size = wqe_sz;
                        sqe->cfa_action = cpu_to_le16(wqe->rawqp1.cfa_action);
                        sqe->lflags = cpu_to_le16(wqe->rawqp1.lflags);
                        sqe->length = cpu_to_le32(data_len);
                        ext_sqe->cfa_meta = cpu_to_le32((wqe->rawqp1.cfa_meta &
                                SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_MASK) <<
                                SQ_SEND_RAWETH_QP1_CFA_META_VLAN_VID_SFT);

                        break;
                }
                fallthrough;
        case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
        case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
        {
                struct sq_ud_ext_hdr *ext_sqe = ext_hdr;
                struct sq_send_hdr *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->wqe_size = wqe_sz;
                sqe->inv_key_or_imm_data = cpu_to_le32(wqe->send.inv_key);
                if (qp->type == CMDQ_CREATE_QP_TYPE_UD ||
                    qp->type == CMDQ_CREATE_QP_TYPE_GSI) {
                        sqe->q_key = cpu_to_le32(wqe->send.q_key);
                        sqe->length = cpu_to_le32(data_len);
                        sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
                        ext_sqe->dst_qp = cpu_to_le32(wqe->send.dst_qp &
                                                      SQ_SEND_DST_QP_MASK);
                        ext_sqe->avid = cpu_to_le32(wqe->send.avid &
                                                    SQ_SEND_AVID_MASK);
                } else {
                        sqe->length = cpu_to_le32(data_len);
                        if (qp->mtu)
                                pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
                        if (!pkt_num)
                                pkt_num = 1;
                        sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
                }
                break;
        }
        case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE:
        case BNXT_QPLIB_SWQE_TYPE_RDMA_WRITE_WITH_IMM:
        case BNXT_QPLIB_SWQE_TYPE_RDMA_READ:
        {
                struct sq_rdma_ext_hdr *ext_sqe = ext_hdr;
                struct sq_rdma_hdr *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->wqe_size = wqe_sz;
                sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
                sqe->length = cpu_to_le32((u32)data_len);
                ext_sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
                ext_sqe->remote_key = cpu_to_le32(wqe->rdma.r_key);
                if (qp->mtu)
                        pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
                if (!pkt_num)
                        pkt_num = 1;
                sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
                break;
        }
        case BNXT_QPLIB_SWQE_TYPE_ATOMIC_CMP_AND_SWP:
        case BNXT_QPLIB_SWQE_TYPE_ATOMIC_FETCH_AND_ADD:
        {
                struct sq_atomic_ext_hdr *ext_sqe = ext_hdr;
                struct sq_atomic_hdr *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->remote_key = cpu_to_le32(wqe->atomic.r_key);
                sqe->remote_va = cpu_to_le64(wqe->atomic.remote_va);
                ext_sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
                ext_sqe->cmp_data = cpu_to_le64(wqe->atomic.cmp_data);
                if (qp->mtu)
                        pkt_num = (data_len + qp->mtu - 1) / qp->mtu;
                if (!pkt_num)
                        pkt_num = 1;
                sq->psn = (sq->psn + pkt_num) & BTH_PSN_MASK;
                break;
        }
        case BNXT_QPLIB_SWQE_TYPE_LOCAL_INV:
        {
                struct sq_localinvalidate *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->inv_l_key = cpu_to_le32(wqe->local_inv.inv_l_key);

                break;
        }
        case BNXT_QPLIB_SWQE_TYPE_FAST_REG_MR:
        {
                struct sq_fr_pmr_ext_hdr *ext_sqe = ext_hdr;
                struct sq_fr_pmr_hdr *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->access_cntl = wqe->frmr.access_cntl |
                                   SQ_FR_PMR_ACCESS_CNTL_LOCAL_WRITE;
                sqe->zero_based_page_size_log =
                        (wqe->frmr.pg_sz_log & SQ_FR_PMR_PAGE_SIZE_LOG_MASK) <<
                        SQ_FR_PMR_PAGE_SIZE_LOG_SFT |
                        (wqe->frmr.zero_based ? SQ_FR_PMR_ZERO_BASED : 0);
                sqe->l_key = cpu_to_le32(wqe->frmr.l_key);
                temp32 = cpu_to_le32(wqe->frmr.length);
                memcpy(sqe->length, &temp32, sizeof(wqe->frmr.length));
                sqe->numlevels_pbl_page_size_log =
                        ((wqe->frmr.pbl_pg_sz_log <<
                                        SQ_FR_PMR_PBL_PAGE_SIZE_LOG_SFT) &
                                        SQ_FR_PMR_PBL_PAGE_SIZE_LOG_MASK) |
                        ((wqe->frmr.levels << SQ_FR_PMR_NUMLEVELS_SFT) &
                                        SQ_FR_PMR_NUMLEVELS_MASK);

                for (i = 0; i < wqe->frmr.page_list_len; i++)
                        wqe->frmr.pbl_ptr[i] = cpu_to_le64(
                                                wqe->frmr.page_list[i] |
                                                PTU_PTE_VALID);
                ext_sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
                ext_sqe->va = cpu_to_le64(wqe->frmr.va);

                break;
        }
        case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
        {
                struct sq_bind_ext_hdr *ext_sqe = ext_hdr;
                struct sq_bind_hdr *sqe = base_hdr;

                sqe->wqe_type = wqe->type;
                sqe->flags = wqe->flags;
                sqe->access_cntl = wqe->bind.access_cntl;
                sqe->mw_type_zero_based = wqe->bind.mw_type |
                        (wqe->bind.zero_based ? SQ_BIND_ZERO_BASED : 0);
                sqe->parent_l_key = cpu_to_le32(wqe->bind.parent_l_key);
                sqe->l_key = cpu_to_le32(wqe->bind.r_key);
                ext_sqe->va = cpu_to_le64(wqe->bind.va);
                ext_sqe->length_lo = cpu_to_le32(wqe->bind.length);
                break;
        }
        default:
                /* Bad wqe, return error */
                rc = -EINVAL;
                goto done;
        }
        swq->next_psn = sq->psn & BTH_PSN_MASK;
        bnxt_qplib_fill_psn_search(qp, wqe, swq);
queue_err:
        bnxt_qplib_swq_mod_start(sq, wqe_idx);
        bnxt_qplib_hwq_incr_prod(hwq, swq->slots);
        qp->wqe_cnt++;
done:
        if (sch_handler) {
                nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
                if (nq_work) {
                        nq_work->cq = qp->scq;
                        nq_work->nq = qp->scq->nq;
                        INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
                        queue_work(qp->scq->nq->cqn_wq, &nq_work->work);
                } else {
                        dev_err(&hwq->pdev->dev,
                                "FP: Failed to allocate SQ nq_work!\n");
                        rc = -ENOMEM;
                }
        }
        return rc;
}

void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
{
        struct bnxt_qplib_q *rq = &qp->rq;

        bnxt_qplib_ring_prod_db(&rq->dbinfo, DBC_DBC_TYPE_RQ);
}

int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
                         struct bnxt_qplib_swqe *wqe)
{
        struct bnxt_qplib_nq_work *nq_work = NULL;
        struct bnxt_qplib_q *rq = &qp->rq;
        struct rq_wqe_hdr *base_hdr;
        struct rq_ext_hdr *ext_hdr;
        struct bnxt_qplib_hwq *hwq;
        struct bnxt_qplib_swq *swq;
        bool sch_handler = false;
        u16 wqe_sz, idx;
        u32 wqe_idx;
        int rc = 0;

        hwq = &rq->hwq;
        if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_RESET) {
                dev_err(&hwq->pdev->dev,
                        "QPLIB: FP: QP (0x%x) is in the 0x%x state",
                        qp->id, qp->state);
                rc = -EINVAL;
                goto done;
        }

        if (bnxt_qplib_queue_full(rq, rq->dbinfo.max_slot)) {
                dev_err(&hwq->pdev->dev,
                        "FP: QP (0x%x) RQ is full!\n", qp->id);
                rc = -EINVAL;
                goto done;
        }

        swq = bnxt_qplib_get_swqe(rq, &wqe_idx);
        swq->wr_id = wqe->wr_id;
        swq->slots = rq->dbinfo.max_slot;

        if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
                sch_handler = true;
                dev_dbg(&hwq->pdev->dev,
                        "%s: Error QP. Scheduling for poll_cq\n", __func__);
                goto queue_err;
        }

        idx = 0;
        base_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
        ext_hdr = bnxt_qplib_get_prod_qe(hwq, idx++);
        memset(base_hdr, 0, sizeof(struct sq_sge));
        memset(ext_hdr, 0, sizeof(struct sq_sge));
        wqe_sz = (sizeof(struct rq_wqe_hdr) +
        wqe->num_sge * sizeof(struct sq_sge)) >> 4;
        bnxt_qplib_put_sges(hwq, wqe->sg_list, wqe->num_sge, &idx);
        if (!wqe->num_sge) {

                struct sq_sge *sge;

                sge = bnxt_qplib_get_prod_qe(hwq, idx++);
                sge->size = 0;
                wqe_sz++;
        }
        base_hdr->wqe_type = wqe->type;
        base_hdr->flags = wqe->flags;
        base_hdr->wqe_size = wqe_sz;
        base_hdr->wr_id[0] = cpu_to_le32(wqe_idx);
queue_err:
        bnxt_qplib_swq_mod_start(rq, wqe_idx);
        bnxt_qplib_hwq_incr_prod(hwq, swq->slots);
done:
        if (sch_handler) {
                nq_work = kzalloc(sizeof(*nq_work), GFP_ATOMIC);
                if (nq_work) {
                        nq_work->cq = qp->rcq;
                        nq_work->nq = qp->rcq->nq;
                        INIT_WORK(&nq_work->work, bnxt_qpn_cqn_sched_task);
                        queue_work(qp->rcq->nq->cqn_wq, &nq_work->work);
                } else {
                        dev_err(&hwq->pdev->dev,
                                "FP: Failed to allocate RQ nq_work!\n");
                        rc = -ENOMEM;
                }
        }

        return rc;
}

/* CQ */
int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct bnxt_qplib_hwq_attr hwq_attr = {};
        struct creq_create_cq_resp resp;
        struct bnxt_qplib_pbl *pbl;
        struct cmdq_create_cq req;
        u16 cmd_flags = 0;
        u32 pg_sz_lvl;
        int rc;

        hwq_attr.res = res;
        hwq_attr.depth = cq->max_wqe;
        hwq_attr.stride = sizeof(struct cq_base);
        hwq_attr.type = HWQ_TYPE_QUEUE;
        hwq_attr.sginfo = &cq->sg_info;
        rc = bnxt_qplib_alloc_init_hwq(&cq->hwq, &hwq_attr);
        if (rc)
                goto exit;

        RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags);

        if (!cq->dpi) {
                dev_err(&rcfw->pdev->dev,
                        "FP: CREATE_CQ failed due to NULL DPI\n");
                return -EINVAL;
        }
        req.dpi = cpu_to_le32(cq->dpi->dpi);
        req.cq_handle = cpu_to_le64(cq->cq_handle);
        req.cq_size = cpu_to_le32(cq->hwq.max_elements);
        pbl = &cq->hwq.pbl[PBL_LVL_0];
        pg_sz_lvl = (bnxt_qplib_base_pg_size(&cq->hwq) <<
                     CMDQ_CREATE_CQ_PG_SIZE_SFT);
        pg_sz_lvl |= (cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK);
        req.pg_size_lvl = cpu_to_le32(pg_sz_lvl);
        req.pbl = cpu_to_le64(pbl->pg_map_arr[0]);
        req.cq_fco_cnq_id = cpu_to_le32(
                        (cq->cnq_hw_ring_id & CMDQ_CREATE_CQ_CNQ_ID_MASK) <<
                         CMDQ_CREATE_CQ_CNQ_ID_SFT);

        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                goto fail;

        cq->id = le32_to_cpu(resp.xid);
        cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
        init_waitqueue_head(&cq->waitq);
        INIT_LIST_HEAD(&cq->sqf_head);
        INIT_LIST_HEAD(&cq->rqf_head);
        spin_lock_init(&cq->compl_lock);
        spin_lock_init(&cq->flush_lock);

        cq->dbinfo.hwq = &cq->hwq;
        cq->dbinfo.xid = cq->id;
        cq->dbinfo.db = cq->dpi->dbr;
        cq->dbinfo.priv_db = res->dpi_tbl.dbr_bar_reg_iomem;

        bnxt_qplib_armen_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMENA);

        return 0;

fail:
        bnxt_qplib_free_hwq(res, &cq->hwq);
exit:
        return rc;
}

int bnxt_qplib_destroy_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
{
        struct bnxt_qplib_rcfw *rcfw = res->rcfw;
        struct cmdq_destroy_cq req;
        struct creq_destroy_cq_resp resp;
        u16 total_cnq_events;
        u16 cmd_flags = 0;
        int rc;

        RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags);

        req.cq_cid = cpu_to_le32(cq->id);
        rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
                                          (void *)&resp, NULL, 0);
        if (rc)
                return rc;
        total_cnq_events = le16_to_cpu(resp.total_cnq_events);
        __wait_for_all_nqes(cq, total_cnq_events);
        bnxt_qplib_free_hwq(res, &cq->hwq);
        return 0;
}

static int __flush_sq(struct bnxt_qplib_q *sq, struct bnxt_qplib_qp *qp,
                      struct bnxt_qplib_cqe **pcqe, int *budget)
{
        struct bnxt_qplib_cqe *cqe;
        u32 start, last;
        int rc = 0;

        /* Now complete all outstanding SQEs with FLUSHED_ERR */
        start = sq->swq_start;
        cqe = *pcqe;
        while (*budget) {
                last = sq->swq_last;
                if (start == last)
                        break;
                /* Skip the FENCE WQE completions */
                if (sq->swq[last].wr_id == BNXT_QPLIB_FENCE_WRID) {
                        bnxt_qplib_cancel_phantom_processing(qp);
                        goto skip_compl;
                }
                memset(cqe, 0, sizeof(*cqe));
                cqe->status = CQ_REQ_STATUS_WORK_REQUEST_FLUSHED_ERR;
                cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
                cqe->qp_handle = (u64)(unsigned long)qp;
                cqe->wr_id = sq->swq[last].wr_id;
                cqe->src_qp = qp->id;
                cqe->type = sq->swq[last].type;
                cqe++;
                (*budget)--;
skip_compl:
                bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[last].slots);
                sq->swq_last = sq->swq[last].next_idx;
        }
        *pcqe = cqe;
        if (!(*budget) && sq->swq_last != start)
                /* Out of budget */
                rc = -EAGAIN;

        return rc;
}

static int __flush_rq(struct bnxt_qplib_q *rq, struct bnxt_qplib_qp *qp,
                      struct bnxt_qplib_cqe **pcqe, int *budget)
{
        struct bnxt_qplib_cqe *cqe;
        u32 start, last;
        int opcode = 0;
        int rc = 0;

        switch (qp->type) {
        case CMDQ_CREATE_QP1_TYPE_GSI:
                opcode = CQ_BASE_CQE_TYPE_RES_RAWETH_QP1;
                break;
        case CMDQ_CREATE_QP_TYPE_RC:
                opcode = CQ_BASE_CQE_TYPE_RES_RC;
                break;
        case CMDQ_CREATE_QP_TYPE_UD:
        case CMDQ_CREATE_QP_TYPE_GSI:
                opcode = CQ_BASE_CQE_TYPE_RES_UD;
                break;
        }

        /* Flush the rest of the RQ */
        start = rq->swq_start;
        cqe = *pcqe;
        while (*budget) {
                last = rq->swq_last;
                if (last == start)
                        break;
                memset(cqe, 0, sizeof(*cqe));
                cqe->status =
                    CQ_RES_RC_STATUS_WORK_REQUEST_FLUSHED_ERR;
                cqe->opcode = opcode;
                cqe->qp_handle = (unsigned long)qp;
                cqe->wr_id = rq->swq[last].wr_id;
                cqe++;
                (*budget)--;
                bnxt_qplib_hwq_incr_cons(&rq->hwq, rq->swq[last].slots);
                rq->swq_last = rq->swq[last].next_idx;
        }
        *pcqe = cqe;
        if (!*budget && rq->swq_last != start)
                /* Out of budget */
                rc = -EAGAIN;

        return rc;
}

void bnxt_qplib_mark_qp_error(void *qp_handle)
{
        struct bnxt_qplib_qp *qp = qp_handle;

        if (!qp)
                return;

        /* Must block new posting of SQ and RQ */
        qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
        bnxt_qplib_cancel_phantom_processing(qp);
}

/* Note: SQE is valid from sw_sq_cons up to cqe_sq_cons (exclusive)
 *       CQE is track from sw_cq_cons to max_element but valid only if VALID=1
 */
static int do_wa9060(struct bnxt_qplib_qp *qp, struct bnxt_qplib_cq *cq,
                     u32 cq_cons, u32 swq_last, u32 cqe_sq_cons)
{
        u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx;
        struct bnxt_qplib_q *sq = &qp->sq;
        struct cq_req *peek_req_hwcqe;
        struct bnxt_qplib_qp *peek_qp;
        struct bnxt_qplib_q *peek_sq;
        struct bnxt_qplib_swq *swq;
        struct cq_base *peek_hwcqe;
        int i, rc = 0;

        /* Normal mode */
        /* Check for the psn_search marking before completing */
        swq = &sq->swq[swq_last];
        if (swq->psn_search &&
            le32_to_cpu(swq->psn_search->flags_next_psn) & 0x80000000) {
                /* Unmark */
                swq->psn_search->flags_next_psn = cpu_to_le32
                        (le32_to_cpu(swq->psn_search->flags_next_psn)
                                     & ~0x80000000);
                dev_dbg(&cq->hwq.pdev->dev,
                        "FP: Process Req cq_cons=0x%x qp=0x%x sq cons sw=0x%x cqe=0x%x marked!\n",
                        cq_cons, qp->id, swq_last, cqe_sq_cons);
                sq->condition = true;
                sq->send_phantom = true;

                /* TODO: Only ARM if the previous SQE is ARMALL */
                bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ_ARMALL);
                rc = -EAGAIN;
                goto out;
        }
        if (sq->condition) {
                /* Peek at the completions */
                peek_raw_cq_cons = cq->hwq.cons;
                peek_sw_cq_cons = cq_cons;
                i = cq->hwq.max_elements;
                while (i--) {
                        peek_sw_cq_cons = HWQ_CMP((peek_sw_cq_cons), &cq->hwq);
                        peek_hwcqe = bnxt_qplib_get_qe(&cq->hwq,
                                                       peek_sw_cq_cons, NULL);
                        /* If the next hwcqe is VALID */
                        if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons,
                                          cq->hwq.max_elements)) {
                        /*
                         * The valid test of the entry must be done first before
                         * reading any further.
                         */
                                dma_rmb();
                                /* If the next hwcqe is a REQ */
                                if ((peek_hwcqe->cqe_type_toggle &
                                    CQ_BASE_CQE_TYPE_MASK) ==
                                    CQ_BASE_CQE_TYPE_REQ) {
                                        peek_req_hwcqe = (struct cq_req *)
                                                         peek_hwcqe;
                                        peek_qp = (struct bnxt_qplib_qp *)
                                                ((unsigned long)
                                                 le64_to_cpu
                                                 (peek_req_hwcqe->qp_handle));
                                        peek_sq = &peek_qp->sq;
                                        peek_sq_cons_idx =
                                                ((le16_to_cpu(
                                                  peek_req_hwcqe->sq_cons_idx)
                                                  - 1) % sq->max_wqe);
                                        /* If the hwcqe's sq's wr_id matches */
                                        if (peek_sq == sq &&
                                            sq->swq[peek_sq_cons_idx].wr_id ==
                                            BNXT_QPLIB_FENCE_WRID) {
                                                /*
                                                 *  Unbreak only if the phantom
                                                 *  comes back
                                                 */
                                                dev_dbg(&cq->hwq.pdev->dev,
                                                        "FP: Got Phantom CQE\n");
                                                sq->condition = false;
                                                sq->single = true;
                                                rc = 0;
                                                goto out;
                                        }
                                }
                                /* Valid but not the phantom, so keep looping */
                        } else {
                                /* Not valid yet, just exit and wait */
                                rc = -EINVAL;
                                goto out;
                        }
                        peek_sw_cq_cons++;
                        peek_raw_cq_cons++;
                }
                dev_err(&cq->hwq.pdev->dev,
                        "Should not have come here! cq_cons=0x%x qp=0x%x sq cons sw=0x%x hw=0x%x\n",
                        cq_cons, qp->id, swq_last, cqe_sq_cons);
                rc = -EINVAL;
        }
out:
        return rc;
}

static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
                                     struct cq_req *hwcqe,
                                     struct bnxt_qplib_cqe **pcqe, int *budget,
                                     u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
{
        struct bnxt_qplib_swq *swq;
        struct bnxt_qplib_cqe *cqe;
        struct bnxt_qplib_qp *qp;
        struct bnxt_qplib_q *sq;
        u32 cqe_sq_cons;
        int rc = 0;

        qp = (struct bnxt_qplib_qp *)((unsigned long)
                                      le64_to_cpu(hwcqe->qp_handle));
        if (!qp) {
                dev_err(&cq->hwq.pdev->dev,
                        "FP: Process Req qp is NULL\n");
                return -EINVAL;
        }
        sq = &qp->sq;

        cqe_sq_cons = le16_to_cpu(hwcqe->sq_cons_idx) % sq->max_wqe;
        if (qp->sq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                goto done;
        }
        /* Require to walk the sq's swq to fabricate CQEs for all previously
         * signaled SWQEs due to CQE aggregation from the current sq cons
         * to the cqe_sq_cons
         */
        cqe = *pcqe;
        while (*budget) {
                if (sq->swq_last == cqe_sq_cons)
                        /* Done */
                        break;

                swq = &sq->swq[sq->swq_last];
                memset(cqe, 0, sizeof(*cqe));
                cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
                cqe->qp_handle = (u64)(unsigned long)qp;
                cqe->src_qp = qp->id;
                cqe->wr_id = swq->wr_id;
                if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
                        goto skip;
                cqe->type = swq->type;

                /* For the last CQE, check for status.  For errors, regardless
                 * of the request being signaled or not, it must complete with
                 * the hwcqe error status
                 */
                if (swq->next_idx == cqe_sq_cons &&
                    hwcqe->status != CQ_REQ_STATUS_OK) {
                        cqe->status = hwcqe->status;
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Processed Req wr_id[%d] = 0x%llx with status 0x%x\n",
                                sq->swq_last, cqe->wr_id, cqe->status);
                        cqe++;
                        (*budget)--;
                        bnxt_qplib_mark_qp_error(qp);
                        /* Add qp to flush list of the CQ */
                        bnxt_qplib_add_flush_qp(qp);
                } else {
                        /* Before we complete, do WA 9060 */
                        if (do_wa9060(qp, cq, cq_cons, sq->swq_last,
                                      cqe_sq_cons)) {
                                *lib_qp = qp;
                                goto out;
                        }
                        if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
                                cqe->status = CQ_REQ_STATUS_OK;
                                cqe++;
                                (*budget)--;
                        }
                }
skip:
                bnxt_qplib_hwq_incr_cons(&sq->hwq, swq->slots);
                sq->swq_last = swq->next_idx;
                if (sq->single)
                        break;
        }
out:
        *pcqe = cqe;
        if (sq->swq_last != cqe_sq_cons) {
                /* Out of budget */
                rc = -EAGAIN;
                goto done;
        }
        /*
         * Back to normal completion mode only after it has completed all of
         * the WC for this CQE
         */
        sq->single = false;
done:
        return rc;
}

static void bnxt_qplib_release_srqe(struct bnxt_qplib_srq *srq, u32 tag)
{
        spin_lock(&srq->hwq.lock);
        srq->swq[srq->last_idx].next_idx = (int)tag;
        srq->last_idx = (int)tag;
        srq->swq[srq->last_idx].next_idx = -1;
        srq->hwq.cons++; /* Support for SRQE counter */
        spin_unlock(&srq->hwq.lock);
}

static int bnxt_qplib_cq_process_res_rc(struct bnxt_qplib_cq *cq,
                                        struct cq_res_rc *hwcqe,
                                        struct bnxt_qplib_cqe **pcqe,
                                        int *budget)
{
        struct bnxt_qplib_srq *srq;
        struct bnxt_qplib_cqe *cqe;
        struct bnxt_qplib_qp *qp;
        struct bnxt_qplib_q *rq;
        u32 wr_id_idx;
        int rc = 0;

        qp = (struct bnxt_qplib_qp *)((unsigned long)
                                      le64_to_cpu(hwcqe->qp_handle));
        if (!qp) {
                dev_err(&cq->hwq.pdev->dev, "process_cq RC qp is NULL\n");
                return -EINVAL;
        }
        if (qp->rq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                goto done;
        }

        cqe = *pcqe;
        cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
        cqe->length = le32_to_cpu(hwcqe->length);
        cqe->invrkey = le32_to_cpu(hwcqe->imm_data_or_inv_r_key);
        cqe->mr_handle = le64_to_cpu(hwcqe->mr_handle);
        cqe->flags = le16_to_cpu(hwcqe->flags);
        cqe->status = hwcqe->status;
        cqe->qp_handle = (u64)(unsigned long)qp;

        wr_id_idx = le32_to_cpu(hwcqe->srq_or_rq_wr_id) &
                                CQ_RES_RC_SRQ_OR_RQ_WR_ID_MASK;
        if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
                srq = qp->srq;
                if (!srq)
                        return -EINVAL;
                if (wr_id_idx >= srq->hwq.max_elements) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process RC wr_id idx 0x%x exceeded SRQ max 0x%x\n",
                                wr_id_idx, srq->hwq.max_elements);
                        return -EINVAL;
                }
                cqe->wr_id = srq->swq[wr_id_idx].wr_id;
                bnxt_qplib_release_srqe(srq, wr_id_idx);
                cqe++;
                (*budget)--;
                *pcqe = cqe;
        } else {
                struct bnxt_qplib_swq *swq;

                rq = &qp->rq;
                if (wr_id_idx > (rq->max_wqe - 1)) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process RC wr_id idx 0x%x exceeded RQ max 0x%x\n",
                                wr_id_idx, rq->max_wqe);
                        return -EINVAL;
                }
                if (wr_id_idx != rq->swq_last)
                        return -EINVAL;
                swq = &rq->swq[rq->swq_last];
                cqe->wr_id = swq->wr_id;
                cqe++;
                (*budget)--;
                bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
                rq->swq_last = swq->next_idx;
                *pcqe = cqe;

                if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
                        qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
                        /* Add qp to flush list of the CQ */
                        bnxt_qplib_add_flush_qp(qp);
                }
        }

done:
        return rc;
}

static int bnxt_qplib_cq_process_res_ud(struct bnxt_qplib_cq *cq,
                                        struct cq_res_ud *hwcqe,
                                        struct bnxt_qplib_cqe **pcqe,
                                        int *budget)
{
        struct bnxt_qplib_srq *srq;
        struct bnxt_qplib_cqe *cqe;
        struct bnxt_qplib_qp *qp;
        struct bnxt_qplib_q *rq;
        u32 wr_id_idx;
        int rc = 0;

        qp = (struct bnxt_qplib_qp *)((unsigned long)
                                      le64_to_cpu(hwcqe->qp_handle));
        if (!qp) {
                dev_err(&cq->hwq.pdev->dev, "process_cq UD qp is NULL\n");
                return -EINVAL;
        }
        if (qp->rq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                goto done;
        }
        cqe = *pcqe;
        cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
        cqe->length = le16_to_cpu(hwcqe->length) & CQ_RES_UD_LENGTH_MASK;
        cqe->cfa_meta = le16_to_cpu(hwcqe->cfa_metadata);
        cqe->invrkey = le32_to_cpu(hwcqe->imm_data);
        cqe->flags = le16_to_cpu(hwcqe->flags);
        cqe->status = hwcqe->status;
        cqe->qp_handle = (u64)(unsigned long)qp;
        /*FIXME: Endianness fix needed for smace */
        memcpy(cqe->smac, hwcqe->src_mac, ETH_ALEN);
        wr_id_idx = le32_to_cpu(hwcqe->src_qp_high_srq_or_rq_wr_id)
                                & CQ_RES_UD_SRQ_OR_RQ_WR_ID_MASK;
        cqe->src_qp = le16_to_cpu(hwcqe->src_qp_low) |
                                  ((le32_to_cpu(
                                  hwcqe->src_qp_high_srq_or_rq_wr_id) &
                                 CQ_RES_UD_SRC_QP_HIGH_MASK) >> 8);

        if (cqe->flags & CQ_RES_RC_FLAGS_SRQ_SRQ) {
                srq = qp->srq;
                if (!srq)
                        return -EINVAL;

                if (wr_id_idx >= srq->hwq.max_elements) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process UD wr_id idx 0x%x exceeded SRQ max 0x%x\n",
                                wr_id_idx, srq->hwq.max_elements);
                        return -EINVAL;
                }
                cqe->wr_id = srq->swq[wr_id_idx].wr_id;
                bnxt_qplib_release_srqe(srq, wr_id_idx);
                cqe++;
                (*budget)--;
                *pcqe = cqe;
        } else {
                struct bnxt_qplib_swq *swq;

                rq = &qp->rq;
                if (wr_id_idx > (rq->max_wqe - 1)) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process UD wr_id idx 0x%x exceeded RQ max 0x%x\n",
                                wr_id_idx, rq->max_wqe);
                        return -EINVAL;
                }

                if (rq->swq_last != wr_id_idx)
                        return -EINVAL;
                swq = &rq->swq[rq->swq_last];
                cqe->wr_id = swq->wr_id;
                cqe++;
                (*budget)--;
                bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
                rq->swq_last = swq->next_idx;
                *pcqe = cqe;

                if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
                        qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
                        /* Add qp to flush list of the CQ */
                        bnxt_qplib_add_flush_qp(qp);
                }
        }
done:
        return rc;
}

bool bnxt_qplib_is_cq_empty(struct bnxt_qplib_cq *cq)
{
        struct cq_base *hw_cqe;
        u32 sw_cons, raw_cons;
        bool rc = true;

        raw_cons = cq->hwq.cons;
        sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
        hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL);
         /* Check for Valid bit. If the CQE is valid, return false */
        rc = !CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements);
        return rc;
}

static int bnxt_qplib_cq_process_res_raweth_qp1(struct bnxt_qplib_cq *cq,
                                                struct cq_res_raweth_qp1 *hwcqe,
                                                struct bnxt_qplib_cqe **pcqe,
                                                int *budget)
{
        struct bnxt_qplib_qp *qp;
        struct bnxt_qplib_q *rq;
        struct bnxt_qplib_srq *srq;
        struct bnxt_qplib_cqe *cqe;
        u32 wr_id_idx;
        int rc = 0;

        qp = (struct bnxt_qplib_qp *)((unsigned long)
                                      le64_to_cpu(hwcqe->qp_handle));
        if (!qp) {
                dev_err(&cq->hwq.pdev->dev, "process_cq Raw/QP1 qp is NULL\n");
                return -EINVAL;
        }
        if (qp->rq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                goto done;
        }
        cqe = *pcqe;
        cqe->opcode = hwcqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK;
        cqe->flags = le16_to_cpu(hwcqe->flags);
        cqe->qp_handle = (u64)(unsigned long)qp;

        wr_id_idx =
                le32_to_cpu(hwcqe->raweth_qp1_payload_offset_srq_or_rq_wr_id)
                                & CQ_RES_RAWETH_QP1_SRQ_OR_RQ_WR_ID_MASK;
        cqe->src_qp = qp->id;
        if (qp->id == 1 && !cqe->length) {
                /* Add workaround for the length misdetection */
                cqe->length = 296;
        } else {
                cqe->length = le16_to_cpu(hwcqe->length);
        }
        cqe->pkey_index = qp->pkey_index;
        memcpy(cqe->smac, qp->smac, 6);

        cqe->raweth_qp1_flags = le16_to_cpu(hwcqe->raweth_qp1_flags);
        cqe->raweth_qp1_flags2 = le32_to_cpu(hwcqe->raweth_qp1_flags2);
        cqe->raweth_qp1_metadata = le32_to_cpu(hwcqe->raweth_qp1_metadata);

        if (cqe->flags & CQ_RES_RAWETH_QP1_FLAGS_SRQ_SRQ) {
                srq = qp->srq;
                if (!srq) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: SRQ used but not defined??\n");
                        return -EINVAL;
                }
                if (wr_id_idx >= srq->hwq.max_elements) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process Raw/QP1 wr_id idx 0x%x exceeded SRQ max 0x%x\n",
                                wr_id_idx, srq->hwq.max_elements);
                        return -EINVAL;
                }
                cqe->wr_id = srq->swq[wr_id_idx].wr_id;
                bnxt_qplib_release_srqe(srq, wr_id_idx);
                cqe++;
                (*budget)--;
                *pcqe = cqe;
        } else {
                struct bnxt_qplib_swq *swq;

                rq = &qp->rq;
                if (wr_id_idx > (rq->max_wqe - 1)) {
                        dev_err(&cq->hwq.pdev->dev,
                                "FP: CQ Process Raw/QP1 RQ wr_id idx 0x%x exceeded RQ max 0x%x\n",
                                wr_id_idx, rq->max_wqe);
                        return -EINVAL;
                }
                if (rq->swq_last != wr_id_idx)
                        return -EINVAL;
                swq = &rq->swq[rq->swq_last];
                cqe->wr_id = swq->wr_id;
                cqe++;
                (*budget)--;
                bnxt_qplib_hwq_incr_cons(&rq->hwq, swq->slots);
                rq->swq_last = swq->next_idx;
                *pcqe = cqe;

                if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
                        qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
                        /* Add qp to flush list of the CQ */
                        bnxt_qplib_add_flush_qp(qp);
                }
        }

done:
        return rc;
}

static int bnxt_qplib_cq_process_terminal(struct bnxt_qplib_cq *cq,
                                          struct cq_terminal *hwcqe,
                                          struct bnxt_qplib_cqe **pcqe,
                                          int *budget)
{
        struct bnxt_qplib_qp *qp;
        struct bnxt_qplib_q *sq, *rq;
        struct bnxt_qplib_cqe *cqe;
        u32 swq_last = 0, cqe_cons;
        int rc = 0;

        /* Check the Status */
        if (hwcqe->status != CQ_TERMINAL_STATUS_OK)
                dev_warn(&cq->hwq.pdev->dev,
                         "FP: CQ Process Terminal Error status = 0x%x\n",
                         hwcqe->status);

        qp = (struct bnxt_qplib_qp *)((unsigned long)
                                      le64_to_cpu(hwcqe->qp_handle));
        if (!qp) {
                dev_err(&cq->hwq.pdev->dev,
                        "FP: CQ Process terminal qp is NULL\n");
                return -EINVAL;
        }

        /* Must block new posting of SQ and RQ */
        qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;

        sq = &qp->sq;
        rq = &qp->rq;

        cqe_cons = le16_to_cpu(hwcqe->sq_cons_idx);
        if (cqe_cons == 0xFFFF)
                goto do_rq;
        cqe_cons %= sq->max_wqe;

        if (qp->sq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                goto sq_done;
        }

        /* Terminal CQE can also include aggregated successful CQEs prior.
         * So we must complete all CQEs from the current sq's cons to the
         * cq_cons with status OK
         */
        cqe = *pcqe;
        while (*budget) {
                swq_last = sq->swq_last;
                if (swq_last == cqe_cons)
                        break;
                if (sq->swq[swq_last].flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
                        memset(cqe, 0, sizeof(*cqe));
                        cqe->status = CQ_REQ_STATUS_OK;
                        cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
                        cqe->qp_handle = (u64)(unsigned long)qp;
                        cqe->src_qp = qp->id;
                        cqe->wr_id = sq->swq[swq_last].wr_id;
                        cqe->type = sq->swq[swq_last].type;
                        cqe++;
                        (*budget)--;
                }
                bnxt_qplib_hwq_incr_cons(&sq->hwq, sq->swq[swq_last].slots);
                sq->swq_last = sq->swq[swq_last].next_idx;
        }
        *pcqe = cqe;
        if (!(*budget) && swq_last != cqe_cons) {
                /* Out of budget */
                rc = -EAGAIN;
                goto sq_done;
        }
sq_done:
        if (rc)
                return rc;
do_rq:
        cqe_cons = le16_to_cpu(hwcqe->rq_cons_idx);
        if (cqe_cons == 0xFFFF) {
                goto done;
        } else if (cqe_cons > rq->max_wqe - 1) {
                dev_err(&cq->hwq.pdev->dev,
                        "FP: CQ Processed terminal reported rq_cons_idx 0x%x exceeds max 0x%x\n",
                        cqe_cons, rq->max_wqe);
                goto done;
        }

        if (qp->rq.flushed) {
                dev_dbg(&cq->hwq.pdev->dev,
                        "%s: QP in Flush QP = %p\n", __func__, qp);
                rc = 0;
                goto done;
        }

        /* Terminal CQE requires all posted RQEs to complete with FLUSHED_ERR
         * from the current rq->cons to the rq->prod regardless what the
         * rq->cons the terminal CQE indicates
         */

        /* Add qp to flush list of the CQ */
        bnxt_qplib_add_flush_qp(qp);
done:
        return rc;
}

static int bnxt_qplib_cq_process_cutoff(struct bnxt_qplib_cq *cq,
                                        struct cq_cutoff *hwcqe)
{
        /* Check the Status */
        if (hwcqe->status != CQ_CUTOFF_STATUS_OK) {
                dev_err(&cq->hwq.pdev->dev,
                        "FP: CQ Process Cutoff Error status = 0x%x\n",
                        hwcqe->status);
                return -EINVAL;
        }
        clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
        wake_up_interruptible(&cq->waitq);

        return 0;
}

int bnxt_qplib_process_flush_list(struct bnxt_qplib_cq *cq,
                                  struct bnxt_qplib_cqe *cqe,
                                  int num_cqes)
{
        struct bnxt_qplib_qp *qp = NULL;
        u32 budget = num_cqes;
        unsigned long flags;

        spin_lock_irqsave(&cq->flush_lock, flags);
        list_for_each_entry(qp, &cq->sqf_head, sq_flush) {
                dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing SQ QP= %p\n", qp);
                __flush_sq(&qp->sq, qp, &cqe, &budget);
        }

        list_for_each_entry(qp, &cq->rqf_head, rq_flush) {
                dev_dbg(&cq->hwq.pdev->dev, "FP: Flushing RQ QP= %p\n", qp);
                __flush_rq(&qp->rq, qp, &cqe, &budget);
        }
        spin_unlock_irqrestore(&cq->flush_lock, flags);

        return num_cqes - budget;
}

int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
                       int num_cqes, struct bnxt_qplib_qp **lib_qp)
{
        struct cq_base *hw_cqe;
        u32 sw_cons, raw_cons;
        int budget, rc = 0;

        raw_cons = cq->hwq.cons;
        budget = num_cqes;

        while (budget) {
                sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
                hw_cqe = bnxt_qplib_get_qe(&cq->hwq, sw_cons, NULL);

                /* Check for Valid bit */
                if (!CQE_CMP_VALID(hw_cqe, raw_cons, cq->hwq.max_elements))
                        break;

                /*
                 * The valid test of the entry must be done first before
                 * reading any further.
                 */
                dma_rmb();
                /* From the device's respective CQE format to qplib_wc*/
                switch (hw_cqe->cqe_type_toggle & CQ_BASE_CQE_TYPE_MASK) {
                case CQ_BASE_CQE_TYPE_REQ:
                        rc = bnxt_qplib_cq_process_req(cq,
                                                       (struct cq_req *)hw_cqe,
                                                       &cqe, &budget,
                                                       sw_cons, lib_qp);
                        break;
                case CQ_BASE_CQE_TYPE_RES_RC:
                        rc = bnxt_qplib_cq_process_res_rc(cq,
                                                          (struct cq_res_rc *)
                                                          hw_cqe, &cqe,
                                                          &budget);
                        break;
                case CQ_BASE_CQE_TYPE_RES_UD:
                        rc = bnxt_qplib_cq_process_res_ud
                                        (cq, (struct cq_res_ud *)hw_cqe, &cqe,
                                         &budget);
                        break;
                case CQ_BASE_CQE_TYPE_RES_RAWETH_QP1:
                        rc = bnxt_qplib_cq_process_res_raweth_qp1
                                        (cq, (struct cq_res_raweth_qp1 *)
                                         hw_cqe, &cqe, &budget);
                        break;
                case CQ_BASE_CQE_TYPE_TERMINAL:
                        rc = bnxt_qplib_cq_process_terminal
                                        (cq, (struct cq_terminal *)hw_cqe,
                                         &cqe, &budget);
                        break;
                case CQ_BASE_CQE_TYPE_CUT_OFF:
                        bnxt_qplib_cq_process_cutoff
                                        (cq, (struct cq_cutoff *)hw_cqe);
                        /* Done processing this CQ */
                        goto exit;
                default:
                        dev_err(&cq->hwq.pdev->dev,
                                "process_cq unknown type 0x%lx\n",
                                hw_cqe->cqe_type_toggle &
                                CQ_BASE_CQE_TYPE_MASK);
                        rc = -EINVAL;
                        break;
                }
                if (rc < 0) {
                        if (rc == -EAGAIN)
                                break;
                        /* Error while processing the CQE, just skip to the
                         * next one
                         */
                        dev_err(&cq->hwq.pdev->dev,
                                "process_cqe error rc = 0x%x\n", rc);
                }
                raw_cons++;
        }
        if (cq->hwq.cons != raw_cons) {
                cq->hwq.cons = raw_cons;
                bnxt_qplib_ring_db(&cq->dbinfo, DBC_DBC_TYPE_CQ);
        }
exit:
        return num_cqes - budget;
}

void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
{
        if (arm_type)
                bnxt_qplib_ring_db(&cq->dbinfo, arm_type);
        /* Using cq->arm_state variable to track whether to issue cq handler */
        atomic_set(&cq->arm_state, 1);
}

void bnxt_qplib_flush_cqn_wq(struct bnxt_qplib_qp *qp)
{
        flush_workqueue(qp->scq->nq->cqn_wq);
        if (qp->scq != qp->rcq)
                flush_workqueue(qp->rcq->nq->cqn_wq);
}