qplib_fp.c 60.7 KB
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/*
 * 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
 */

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

#include "roce_hsi.h"

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

static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq);

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->hwq.max_elements * 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->hwq.max_elements * 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->rq;
	int rc = 0;

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

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

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

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;
	struct nq_base *nqe, **nq_ptr;
	int num_cqne_processed = 0;
	u32 sw_cons, raw_cons;
	u16 type;
	int budget = nq->budget;
	u64 q_handle;

	/* 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;

		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;
			bnxt_qplib_arm_cq_enable((struct bnxt_qplib_cq *)
						 ((unsigned long)q_handle));
			if (!nq->cqn_handler(nq, (struct bnxt_qplib_cq *)
						 ((unsigned long)q_handle)))
				num_cqne_processed++;
			else
				dev_warn(&nq->pdev->dev,
					 "QPLIB: cqn - type 0x%x not handled",
					 type);
			break;
		}
		case NQ_BASE_TYPE_DBQ_EVENT:
			break;
		default:
			dev_warn(&nq->pdev->dev,
				 "QPLIB: nqe with type = 0x%x not handled",
				 type);
			break;
		}
		raw_cons++;
	}
	if (hwq->cons != raw_cons) {
		hwq->cons = raw_cons;
		NQ_DB_REARM(nq->bar_reg_iomem, hwq->cons, hwq->max_elements);
	}
}

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;
	struct nq_base **nq_ptr;
	u32 sw_cons;

	/* Prefetch the NQ element */
	sw_cons = HWQ_CMP(hwq->cons, hwq);
	nq_ptr = (struct nq_base **)nq->hwq.pbl_ptr;
	prefetch(&nq_ptr[NQE_PG(sw_cons)][NQE_IDX(sw_cons)]);

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

	return IRQ_HANDLED;
}

void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq)
{
	/* Make sure the HW is stopped! */
	synchronize_irq(nq->vector);
	tasklet_disable(&nq->worker);
	tasklet_kill(&nq->worker);

	if (nq->requested) {
		free_irq(nq->vector, nq);
		nq->requested = false;
	}
	if (nq->bar_reg_iomem)
		iounmap(nq->bar_reg_iomem);
	nq->bar_reg_iomem = NULL;

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

int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq,
			 int msix_vector, int bar_reg_offset,
			 int (*cqn_handler)(struct bnxt_qplib_nq *nq,
					    struct bnxt_qplib_cq *),
			 int (*srqn_handler)(struct bnxt_qplib_nq *nq,
					     void *, u8 event))
{
	resource_size_t nq_base;
	int rc;

	nq->pdev = pdev;
	nq->vector = msix_vector;

	nq->cqn_handler = cqn_handler;

	nq->srqn_handler = srqn_handler;

	tasklet_init(&nq->worker, bnxt_qplib_service_nq, (unsigned long)nq);

	nq->requested = false;
	rc = request_irq(nq->vector, bnxt_qplib_nq_irq, 0, "bnxt_qplib_nq", nq);
	if (rc) {
		dev_err(&nq->pdev->dev,
			"Failed to request IRQ for NQ: %#x", rc);
		bnxt_qplib_disable_nq(nq);
		goto fail;
	}
	nq->requested = true;
	nq->bar_reg = NQ_CONS_PCI_BAR_REGION;
	nq->bar_reg_off = bar_reg_offset;
	nq_base = pci_resource_start(pdev, nq->bar_reg);
	if (!nq_base) {
		rc = -ENOMEM;
		goto fail;
	}
	nq->bar_reg_iomem = ioremap_nocache(nq_base + nq->bar_reg_off, 4);
	if (!nq->bar_reg_iomem) {
		rc = -ENOMEM;
		goto fail;
	}
	NQ_DB_REARM(nq->bar_reg_iomem, nq->hwq.cons, nq->hwq.max_elements);

	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->pdev, &nq->hwq);
}

int bnxt_qplib_alloc_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq)
{
	nq->pdev = pdev;
	if (!nq->hwq.max_elements ||
	    nq->hwq.max_elements > BNXT_QPLIB_NQE_MAX_CNT)
		nq->hwq.max_elements = BNXT_QPLIB_NQE_MAX_CNT;

	if (bnxt_qplib_alloc_init_hwq(nq->pdev, &nq->hwq, NULL, 0,
				      &nq->hwq.max_elements,
				      BNXT_QPLIB_MAX_NQE_ENTRY_SIZE, 0,
				      PAGE_SIZE, HWQ_TYPE_L2_CMPL))
		return -ENOMEM;

	nq->budget = 8;
	return 0;
}

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

	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 */
	sq->hwq.max_elements = sq->max_wqe;
	rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, NULL, 0,
				       &sq->hwq.max_elements,
				       BNXT_QPLIB_MAX_SQE_ENTRY_SIZE, 0,
				       PAGE_SIZE, HWQ_TYPE_QUEUE);
	if (rc)
		goto exit;

	sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
	if (!sq->swq) {
		rc = -ENOMEM;
		goto fail_sq;
	}
	pbl = &sq->hwq.pbl[PBL_LVL_0];
	req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
	req.sq_pg_size_sq_lvl =
		((sq->hwq.level & CMDQ_CREATE_QP1_SQ_LVL_MASK)
				<<  CMDQ_CREATE_QP1_SQ_LVL_SFT) |
		(pbl->pg_size == ROCE_PG_SIZE_4K ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K :
		 pbl->pg_size == ROCE_PG_SIZE_8K ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8K :
		 pbl->pg_size == ROCE_PG_SIZE_64K ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_64K :
		 pbl->pg_size == ROCE_PG_SIZE_2M ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_2M :
		 pbl->pg_size == ROCE_PG_SIZE_8M ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_8M :
		 pbl->pg_size == ROCE_PG_SIZE_1G ?
				CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_1G :
		 CMDQ_CREATE_QP1_SQ_PG_SIZE_PG_4K);

	if (qp->scq)
		req.scq_cid = cpu_to_le32(qp->scq->id);

	qp_flags |= CMDQ_CREATE_QP1_QP_FLAGS_RESERVED_LKEY_ENABLE;

	/* RQ */
	if (rq->max_wqe) {
		rq->hwq.max_elements = qp->rq.max_wqe;
		rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, NULL, 0,
					       &rq->hwq.max_elements,
					       BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
					       PAGE_SIZE, HWQ_TYPE_QUEUE);
		if (rc)
			goto fail_sq;

		rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
				  GFP_KERNEL);
		if (!rq->swq) {
			rc = -ENOMEM;
			goto fail_rq;
		}
		pbl = &rq->hwq.pbl[PBL_LVL_0];
		req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
		req.rq_pg_size_rq_lvl =
			((rq->hwq.level & CMDQ_CREATE_QP1_RQ_LVL_MASK) <<
			 CMDQ_CREATE_QP1_RQ_LVL_SFT) |
				(pbl->pg_size == ROCE_PG_SIZE_4K ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K :
				 pbl->pg_size == ROCE_PG_SIZE_8K ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8K :
				 pbl->pg_size == ROCE_PG_SIZE_64K ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_64K :
				 pbl->pg_size == ROCE_PG_SIZE_2M ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_2M :
				 pbl->pg_size == ROCE_PG_SIZE_8M ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_8M :
				 pbl->pg_size == ROCE_PG_SIZE_1G ?
					CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_1G :
				 CMDQ_CREATE_QP1_RQ_PG_SIZE_PG_4K);
		if (qp->rcq)
			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 fail;
	}
	req.qp_flags = cpu_to_le32(qp_flags);
	req.sq_size = cpu_to_le32(sq->hwq.max_elements);
	req.rq_size = cpu_to_le32(rq->hwq.max_elements);

	req.sq_fwo_sq_sge =
		cpu_to_le16((sq->max_sge & CMDQ_CREATE_QP1_SQ_SGE_MASK) <<
			    CMDQ_CREATE_QP1_SQ_SGE_SFT);
	req.rq_fwo_rq_sge =
		cpu_to_le16((rq->max_sge & CMDQ_CREATE_QP1_RQ_SGE_MASK) <<
			    CMDQ_CREATE_QP1_RQ_SGE_SFT);

	req.pd_id = cpu_to_le32(qp->pd->id);

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	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
400
		goto fail;
401 402

	qp->id = le32_to_cpu(resp.xid);
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	qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
	sq->flush_in_progress = false;
	rq->flush_in_progress = false;

	return 0;

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

int bnxt_qplib_create_qp(struct bnxt_qplib_res *res, struct bnxt_qplib_qp *qp)
{
	struct bnxt_qplib_rcfw *rcfw = res->rcfw;
	struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
	struct cmdq_create_qp req;
426
	struct creq_create_qp_resp resp;
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	struct bnxt_qplib_pbl *pbl;
	struct sq_psn_search **psn_search_ptr;
	unsigned long int psn_search, poff = 0;
	struct bnxt_qplib_q *sq = &qp->sq;
	struct bnxt_qplib_q *rq = &qp->rq;
	struct bnxt_qplib_hwq *xrrq;
	int i, rc, req_size, psn_sz;
	u16 cmd_flags = 0, max_ssge;
	u32 sw_prod, qp_flags = 0;

	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 */
	psn_sz = (qp->type == CMDQ_CREATE_QP_TYPE_RC) ?
		 sizeof(struct sq_psn_search) : 0;
	sq->hwq.max_elements = sq->max_wqe;
	rc = bnxt_qplib_alloc_init_hwq(res->pdev, &sq->hwq, sq->sglist,
				       sq->nmap, &sq->hwq.max_elements,
				       BNXT_QPLIB_MAX_SQE_ENTRY_SIZE,
				       psn_sz,
				       PAGE_SIZE, HWQ_TYPE_QUEUE);
	if (rc)
		goto exit;

	sq->swq = kcalloc(sq->hwq.max_elements, sizeof(*sq->swq), GFP_KERNEL);
	if (!sq->swq) {
		rc = -ENOMEM;
		goto fail_sq;
	}
	hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
	if (psn_sz) {
		psn_search_ptr = (struct sq_psn_search **)
				  &hw_sq_send_ptr[get_sqe_pg
					(sq->hwq.max_elements)];
		psn_search = (unsigned long int)
			      &hw_sq_send_ptr[get_sqe_pg(sq->hwq.max_elements)]
			      [get_sqe_idx(sq->hwq.max_elements)];
		if (psn_search & ~PAGE_MASK) {
			/* If the psn_search does not start on a page boundary,
			 * then calculate the offset
			 */
			poff = (psn_search & ~PAGE_MASK) /
				BNXT_QPLIB_MAX_PSNE_ENTRY_SIZE;
		}
		for (i = 0; i < sq->hwq.max_elements; i++)
			sq->swq[i].psn_search =
				&psn_search_ptr[get_psne_pg(i + poff)]
					       [get_psne_idx(i + poff)];
	}
	pbl = &sq->hwq.pbl[PBL_LVL_0];
	req.sq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
	req.sq_pg_size_sq_lvl =
		((sq->hwq.level & CMDQ_CREATE_QP_SQ_LVL_MASK)
				 <<  CMDQ_CREATE_QP_SQ_LVL_SFT) |
		(pbl->pg_size == ROCE_PG_SIZE_4K ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K :
		 pbl->pg_size == ROCE_PG_SIZE_8K ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8K :
		 pbl->pg_size == ROCE_PG_SIZE_64K ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_64K :
		 pbl->pg_size == ROCE_PG_SIZE_2M ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_2M :
		 pbl->pg_size == ROCE_PG_SIZE_8M ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_8M :
		 pbl->pg_size == ROCE_PG_SIZE_1G ?
				CMDQ_CREATE_QP_SQ_PG_SIZE_PG_1G :
		 CMDQ_CREATE_QP_SQ_PG_SIZE_PG_4K);

	/* initialize all SQ WQEs to LOCAL_INVALID (sq prep for hw fetch) */
	hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
	for (sw_prod = 0; sw_prod < sq->hwq.max_elements; sw_prod++) {
		hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
						[get_sqe_idx(sw_prod)];
		hw_sq_send_hdr->wqe_type = SQ_BASE_WQE_TYPE_LOCAL_INVALID;
	}

	if (qp->scq)
		req.scq_cid = cpu_to_le32(qp->scq->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;

	/* RQ */
	if (rq->max_wqe) {
		rq->hwq.max_elements = rq->max_wqe;
		rc = bnxt_qplib_alloc_init_hwq(res->pdev, &rq->hwq, rq->sglist,
					       rq->nmap, &rq->hwq.max_elements,
					       BNXT_QPLIB_MAX_RQE_ENTRY_SIZE, 0,
					       PAGE_SIZE, HWQ_TYPE_QUEUE);
		if (rc)
			goto fail_sq;

		rq->swq = kcalloc(rq->hwq.max_elements, sizeof(*rq->swq),
				  GFP_KERNEL);
		if (!rq->swq) {
			rc = -ENOMEM;
			goto fail_rq;
		}
		pbl = &rq->hwq.pbl[PBL_LVL_0];
		req.rq_pbl = cpu_to_le64(pbl->pg_map_arr[0]);
		req.rq_pg_size_rq_lvl =
			((rq->hwq.level & CMDQ_CREATE_QP_RQ_LVL_MASK) <<
			 CMDQ_CREATE_QP_RQ_LVL_SFT) |
				(pbl->pg_size == ROCE_PG_SIZE_4K ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K :
				 pbl->pg_size == ROCE_PG_SIZE_8K ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8K :
				 pbl->pg_size == ROCE_PG_SIZE_64K ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_64K :
				 pbl->pg_size == ROCE_PG_SIZE_2M ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_2M :
				 pbl->pg_size == ROCE_PG_SIZE_8M ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_8M :
				 pbl->pg_size == ROCE_PG_SIZE_1G ?
					CMDQ_CREATE_QP_RQ_PG_SIZE_PG_1G :
				 CMDQ_CREATE_QP_RQ_PG_SIZE_PG_4K);
	}

	if (qp->rcq)
		req.rcq_cid = cpu_to_le32(qp->rcq->id);
	req.qp_flags = cpu_to_le32(qp_flags);
	req.sq_size = cpu_to_le32(sq->hwq.max_elements);
	req.rq_size = cpu_to_le32(rq->hwq.max_elements);
	qp->sq_hdr_buf = NULL;
	qp->rq_hdr_buf = NULL;

	rc = bnxt_qplib_alloc_qp_hdr_buf(res, qp);
	if (rc)
		goto fail_rq;

	/* CTRL-22434: Irrespective of the requested SGE count on the SQ
	 * always create the QP with max send sges possible if the requested
	 * inline size is greater than 0.
	 */
	max_ssge = qp->max_inline_data ? 6 : sq->max_sge;
	req.sq_fwo_sq_sge = cpu_to_le16(
				((max_ssge & CMDQ_CREATE_QP_SQ_SGE_MASK)
				 << CMDQ_CREATE_QP_SQ_SGE_SFT) | 0);
	req.rq_fwo_rq_sge = cpu_to_le16(
				((rq->max_sge & CMDQ_CREATE_QP_RQ_SGE_MASK)
				 << CMDQ_CREATE_QP_RQ_SGE_SFT) | 0);
	/* 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);
		rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
					       &xrrq->max_elements,
					       BNXT_QPLIB_MAX_ORRQE_ENTRY_SIZE,
					       0, req_size, HWQ_TYPE_CTX);
		if (rc)
			goto fail_buf_free;
		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);

		rc = bnxt_qplib_alloc_init_hwq(res->pdev, xrrq, NULL, 0,
					       &xrrq->max_elements,
					       BNXT_QPLIB_MAX_IRRQE_ENTRY_SIZE,
					       0, req_size, HWQ_TYPE_CTX);
		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);

611 612 613
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
614
		goto fail;
615 616

	qp->id = le32_to_cpu(resp.xid);
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	qp->cur_qp_state = CMDQ_MODIFY_QP_NEW_STATE_RESET;
	sq->flush_in_progress = false;
	rq->flush_in_progress = false;

	return 0;

fail:
	if (qp->irrq.max_elements)
		bnxt_qplib_free_hwq(res->pdev, &qp->irrq);
fail_orrq:
	if (qp->orrq.max_elements)
		bnxt_qplib_free_hwq(res->pdev, &qp->orrq);
fail_buf_free:
	bnxt_qplib_free_qp_hdr_buf(res, qp);
fail_rq:
	bnxt_qplib_free_hwq(res->pdev, &rq->hwq);
	kfree(rq->swq);
fail_sq:
	bnxt_qplib_free_hwq(res->pdev, &sq->hwq);
	kfree(sq->swq);
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;
734
	struct creq_modify_qp_resp resp;
735 736 737
	u16 cmd_flags = 0, pkey;
	u32 temp32[4];
	u32 bmask;
738
	int rc;
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	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);

828 829 830 831
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
		return rc;
832 833 834 835 836 837 838 839
	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;
840 841
	struct creq_query_qp_resp resp;
	struct bnxt_qplib_rcfw_sbuf *sbuf;
842 843 844
	struct creq_query_qp_resp_sb *sb;
	u16 cmd_flags = 0;
	u32 temp32[4];
845
	int i, rc = 0;
846 847 848

	RCFW_CMD_PREP(req, QUERY_QP, cmd_flags);

849 850 851 852 853
	sbuf = bnxt_qplib_rcfw_alloc_sbuf(rcfw, sizeof(*sb));
	if (!sbuf)
		return -ENOMEM;
	sb = sbuf->sb;

854 855
	req.qp_cid = cpu_to_le32(qp->id);
	req.resp_size = sizeof(*sb) / BNXT_QPLIB_CMDQE_UNITS;
856 857 858 859
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
					  (void *)sbuf, 0);
	if (rc)
		goto bail;
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	/* 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, "QPLIB: SGID not found??");

	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);
914 915 916
bail:
	bnxt_qplib_rcfw_free_sbuf(rcfw, sbuf);
	return rc;
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}

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

	for (i = 0; i < cq_hwq->max_elements; i++) {
		hw_cqe_ptr = (struct cq_base **)cq_hwq->pbl_ptr;
		hw_cqe = &hw_cqe_ptr[CQE_PG(i)][CQE_IDX(i)];
		if (!CQE_CMP_VALID(hw_cqe, i, cq_hwq->max_elements))
			continue;
		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;
961
	struct creq_destroy_qp_resp resp;
962 963
	unsigned long flags;
	u16 cmd_flags = 0;
964
	int rc;
965 966 967 968

	RCFW_CMD_PREP(req, DESTROY_QP, cmd_flags);

	req.qp_cid = cpu_to_le32(qp->id);
969 970 971 972
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
		return rc;
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	/* Must walk the associated CQs to nullified the QP ptr */
	spin_lock_irqsave(&qp->scq->hwq.lock, flags);

	__clean_cq(qp->scq, (u64)(unsigned long)qp);

	if (qp->rcq && qp->rcq != qp->scq) {
		spin_lock(&qp->rcq->hwq.lock);
		__clean_cq(qp->rcq, (u64)(unsigned long)qp);
		spin_unlock(&qp->rcq->hwq.lock);
	}

	spin_unlock_irqrestore(&qp->scq->hwq.lock, flags);

	bnxt_qplib_free_qp_hdr_buf(res, qp);
	bnxt_qplib_free_hwq(res->pdev, &qp->sq.hwq);
	kfree(qp->sq.swq);

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

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

	return 0;
}

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 = HWQ_CMP(sq->hwq.prod, &sq->hwq);
		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 HWQ_CMP(rq->hwq.prod, &rq->hwq);
}

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 = HWQ_CMP(rq->hwq.prod, &rq->hwq);
		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;
}

void bnxt_qplib_post_send_db(struct bnxt_qplib_qp *qp)
{
	struct bnxt_qplib_q *sq = &qp->sq;
	struct dbr_dbr db_msg = { 0 };
	u32 sw_prod;

	sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);

	db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
				   DBR_DBR_INDEX_MASK);
	db_msg.type_xid =
		cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
			    DBR_DBR_TYPE_SQ);
	/* Flush all the WQE writes to HW */
	wmb();
	__iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}

int bnxt_qplib_post_send(struct bnxt_qplib_qp *qp,
			 struct bnxt_qplib_swqe *wqe)
{
	struct bnxt_qplib_q *sq = &qp->sq;
	struct bnxt_qplib_swq *swq;
	struct sq_send *hw_sq_send_hdr, **hw_sq_send_ptr;
	struct sq_sge *hw_sge;
	u32 sw_prod;
	u8 wqe_size16;
	int i, rc = 0, data_len = 0, pkt_num = 0;
	__le32 temp32;

	if (qp->state != CMDQ_MODIFY_QP_NEW_STATE_RTS) {
		rc = -EINVAL;
		goto done;
	}
1086 1087 1088 1089 1090 1091

	if (bnxt_qplib_queue_full(sq)) {
		dev_err(&sq->hwq.pdev->dev,
			"QPLIB: prod = %#x cons = %#x qdepth = %#x delta = %#x",
			sq->hwq.prod, sq->hwq.cons, sq->hwq.max_elements,
			sq->q_full_delta);
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
		rc = -ENOMEM;
		goto done;
	}
	sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
	swq = &sq->swq[sw_prod];
	swq->wr_id = wqe->wr_id;
	swq->type = wqe->type;
	swq->flags = wqe->flags;
	if (qp->sig_type)
		swq->flags |= SQ_SEND_FLAGS_SIGNAL_COMP;
	swq->start_psn = sq->psn & BTH_PSN_MASK;

	hw_sq_send_ptr = (struct sq_send **)sq->hwq.pbl_ptr;
	hw_sq_send_hdr = &hw_sq_send_ptr[get_sqe_pg(sw_prod)]
					[get_sqe_idx(sw_prod)];

	memset(hw_sq_send_hdr, 0, BNXT_QPLIB_MAX_SQE_ENTRY_SIZE);

	if (wqe->flags & BNXT_QPLIB_SWQE_FLAGS_INLINE) {
		/* Copy the inline data */
		if (wqe->inline_len > BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH) {
			dev_warn(&sq->hwq.pdev->dev,
				 "QPLIB: Inline data length > 96 detected");
			data_len = BNXT_QPLIB_SWQE_MAX_INLINE_LENGTH;
		} else {
			data_len = wqe->inline_len;
		}
		memcpy(hw_sq_send_hdr->data, wqe->inline_data, data_len);
		wqe_size16 = (data_len + 15) >> 4;
	} else {
		for (i = 0, hw_sge = (struct sq_sge *)hw_sq_send_hdr->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);
			data_len += wqe->sg_list[i].size;
		}
		/* Each SGE entry = 1 WQE size16 */
		wqe_size16 = wqe->num_sge;
1131 1132 1133 1134 1135
		/* HW requires wqe size has room for atleast one SGE even if
		 * none was supplied by ULP
		 */
		if (!wqe->num_sge)
			wqe_size16++;
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305
	}

	/* Specifics */
	switch (wqe->type) {
	case BNXT_QPLIB_SWQE_TYPE_SEND:
		if (qp->type == CMDQ_CREATE_QP1_TYPE_GSI) {
			/* Assemble info for Raw Ethertype QPs */
			struct sq_send_raweth_qp1 *sqe =
				(struct sq_send_raweth_qp1 *)hw_sq_send_hdr;

			sqe->wqe_type = wqe->type;
			sqe->flags = wqe->flags;
			sqe->wqe_size = wqe_size16 +
				((offsetof(typeof(*sqe), data) + 15) >> 4);
			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);
			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;
		}
		/* else, just fall thru */
	case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_IMM:
	case BNXT_QPLIB_SWQE_TYPE_SEND_WITH_INV:
	{
		struct sq_send *sqe = (struct sq_send *)hw_sq_send_hdr;

		sqe->wqe_type = wqe->type;
		sqe->flags = wqe->flags;
		sqe->wqe_size = wqe_size16 +
				((offsetof(typeof(*sqe), data) + 15) >> 4);
		sqe->inv_key_or_imm_data = cpu_to_le32(
						wqe->send.inv_key);
		if (qp->type == CMDQ_CREATE_QP_TYPE_UD) {
			sqe->q_key = cpu_to_le32(wqe->send.q_key);
			sqe->dst_qp = cpu_to_le32(
					wqe->send.dst_qp & SQ_SEND_DST_QP_MASK);
			sqe->length = cpu_to_le32(data_len);
			sqe->avid = cpu_to_le32(wqe->send.avid &
						SQ_SEND_AVID_MASK);
			sq->psn = (sq->psn + 1) & BTH_PSN_MASK;
		} else {
			sqe->length = cpu_to_le32(data_len);
			sqe->dst_qp = 0;
			sqe->avid = 0;
			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 *sqe = (struct sq_rdma *)hw_sq_send_hdr;

		sqe->wqe_type = wqe->type;
		sqe->flags = wqe->flags;
		sqe->wqe_size = wqe_size16 +
				((offsetof(typeof(*sqe), data) + 15) >> 4);
		sqe->imm_data = cpu_to_le32(wqe->rdma.inv_key);
		sqe->length = cpu_to_le32((u32)data_len);
		sqe->remote_va = cpu_to_le64(wqe->rdma.remote_va);
		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 *sqe = (struct sq_atomic *)hw_sq_send_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);
		sqe->swap_data = cpu_to_le64(wqe->atomic.swap_data);
		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 =
				(struct sq_localinvalidate *)hw_sq_send_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 *sqe = (struct sq_fr_pmr *)hw_sq_send_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);
		sqe->pblptr = cpu_to_le64(wqe->frmr.pbl_dma_ptr);
		sqe->va = cpu_to_le64(wqe->frmr.va);

		break;
	}
	case BNXT_QPLIB_SWQE_TYPE_BIND_MW:
	{
		struct sq_bind *sqe = (struct sq_bind *)hw_sq_send_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);
		sqe->va = cpu_to_le64(wqe->bind.va);
		temp32 = cpu_to_le32(wqe->bind.length);
		memcpy(&sqe->length, &temp32, sizeof(wqe->bind.length));
		break;
	}
	default:
		/* Bad wqe, return error */
		rc = -EINVAL;
		goto done;
	}
	swq->next_psn = sq->psn & BTH_PSN_MASK;
	if (swq->psn_search) {
		swq->psn_search->opcode_start_psn = cpu_to_le32(
			((swq->start_psn << SQ_PSN_SEARCH_START_PSN_SFT) &
			 SQ_PSN_SEARCH_START_PSN_MASK) |
			((wqe->type << SQ_PSN_SEARCH_OPCODE_SFT) &
			 SQ_PSN_SEARCH_OPCODE_MASK));
		swq->psn_search->flags_next_psn = cpu_to_le32(
			((swq->next_psn << SQ_PSN_SEARCH_NEXT_PSN_SFT) &
			 SQ_PSN_SEARCH_NEXT_PSN_MASK));
	}

	sq->hwq.prod++;
1306 1307 1308

	qp->wqe_cnt++;

1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346
done:
	return rc;
}

void bnxt_qplib_post_recv_db(struct bnxt_qplib_qp *qp)
{
	struct bnxt_qplib_q *rq = &qp->rq;
	struct dbr_dbr db_msg = { 0 };
	u32 sw_prod;

	sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
	db_msg.index = cpu_to_le32((sw_prod << DBR_DBR_INDEX_SFT) &
				   DBR_DBR_INDEX_MASK);
	db_msg.type_xid =
		cpu_to_le32(((qp->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
			    DBR_DBR_TYPE_RQ);

	/* Flush the writes to HW Rx WQE before the ringing Rx DB */
	wmb();
	__iowrite64_copy(qp->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}

int bnxt_qplib_post_recv(struct bnxt_qplib_qp *qp,
			 struct bnxt_qplib_swqe *wqe)
{
	struct bnxt_qplib_q *rq = &qp->rq;
	struct rq_wqe *rqe, **rqe_ptr;
	struct sq_sge *hw_sge;
	u32 sw_prod;
	int i, rc = 0;

	if (qp->state == CMDQ_MODIFY_QP_NEW_STATE_ERR) {
		dev_err(&rq->hwq.pdev->dev,
			"QPLIB: FP: QP (0x%x) is in the 0x%x state",
			qp->id, qp->state);
		rc = -EINVAL;
		goto done;
	}
1347
	if (bnxt_qplib_queue_full(rq)) {
1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371
		dev_err(&rq->hwq.pdev->dev,
			"QPLIB: FP: QP (0x%x) RQ is full!", qp->id);
		rc = -EINVAL;
		goto done;
	}
	sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
	rq->swq[sw_prod].wr_id = wqe->wr_id;

	rqe_ptr = (struct rq_wqe **)rq->hwq.pbl_ptr;
	rqe = &rqe_ptr[RQE_PG(sw_prod)][RQE_IDX(sw_prod)];

	memset(rqe, 0, BNXT_QPLIB_MAX_RQE_ENTRY_SIZE);

	/* Calculate wqe_size16 and data_len */
	for (i = 0, hw_sge = (struct sq_sge *)rqe->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);
	}
	rqe->wqe_type = wqe->type;
	rqe->flags = wqe->flags;
	rqe->wqe_size = wqe->num_sge +
			((offsetof(typeof(*rqe), data) + 15) >> 4);
1372 1373 1374 1375 1376
	/* HW requires wqe size has room for atleast one SGE even if none
	 * was supplied by ULP
	 */
	if (!wqe->num_sge)
		rqe->wqe_size++;
1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422

	/* Supply the rqe->wr_id index to the wr_id_tbl for now */
	rqe->wr_id[0] = cpu_to_le32(sw_prod);

	rq->hwq.prod++;
done:
	return rc;
}

/* CQ */

/* Spinlock must be held */
static void bnxt_qplib_arm_cq_enable(struct bnxt_qplib_cq *cq)
{
	struct dbr_dbr db_msg = { 0 };

	db_msg.type_xid =
		cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
			    DBR_DBR_TYPE_CQ_ARMENA);
	/* Flush memory writes before enabling the CQ */
	wmb();
	__iowrite64_copy(cq->dbr_base, &db_msg, sizeof(db_msg) / sizeof(u64));
}

static void bnxt_qplib_arm_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
{
	struct bnxt_qplib_hwq *cq_hwq = &cq->hwq;
	struct dbr_dbr db_msg = { 0 };
	u32 sw_cons;

	/* Ring DB */
	sw_cons = HWQ_CMP(cq_hwq->cons, cq_hwq);
	db_msg.index = cpu_to_le32((sw_cons << DBR_DBR_INDEX_SFT) &
				    DBR_DBR_INDEX_MASK);
	db_msg.type_xid =
		cpu_to_le32(((cq->id << DBR_DBR_XID_SFT) & DBR_DBR_XID_MASK) |
			    arm_type);
	/* flush memory writes before arming the CQ */
	wmb();
	__iowrite64_copy(cq->dpi->dbr, &db_msg, sizeof(db_msg) / sizeof(u64));
}

int bnxt_qplib_create_cq(struct bnxt_qplib_res *res, struct bnxt_qplib_cq *cq)
{
	struct bnxt_qplib_rcfw *rcfw = res->rcfw;
	struct cmdq_create_cq req;
1423
	struct creq_create_cq_resp resp;
1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464
	struct bnxt_qplib_pbl *pbl;
	u16 cmd_flags = 0;
	int rc;

	cq->hwq.max_elements = cq->max_wqe;
	rc = bnxt_qplib_alloc_init_hwq(res->pdev, &cq->hwq, cq->sghead,
				       cq->nmap, &cq->hwq.max_elements,
				       BNXT_QPLIB_MAX_CQE_ENTRY_SIZE, 0,
				       PAGE_SIZE, HWQ_TYPE_QUEUE);
	if (rc)
		goto exit;

	RCFW_CMD_PREP(req, CREATE_CQ, cmd_flags);

	if (!cq->dpi) {
		dev_err(&rcfw->pdev->dev,
			"QPLIB: FP: CREATE_CQ failed due to NULL DPI");
		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];
	req.pg_size_lvl = cpu_to_le32(
	    ((cq->hwq.level & CMDQ_CREATE_CQ_LVL_MASK) <<
						CMDQ_CREATE_CQ_LVL_SFT) |
	    (pbl->pg_size == ROCE_PG_SIZE_4K ? CMDQ_CREATE_CQ_PG_SIZE_PG_4K :
	     pbl->pg_size == ROCE_PG_SIZE_8K ? CMDQ_CREATE_CQ_PG_SIZE_PG_8K :
	     pbl->pg_size == ROCE_PG_SIZE_64K ? CMDQ_CREATE_CQ_PG_SIZE_PG_64K :
	     pbl->pg_size == ROCE_PG_SIZE_2M ? CMDQ_CREATE_CQ_PG_SIZE_PG_2M :
	     pbl->pg_size == ROCE_PG_SIZE_8M ? CMDQ_CREATE_CQ_PG_SIZE_PG_8M :
	     pbl->pg_size == ROCE_PG_SIZE_1G ? CMDQ_CREATE_CQ_PG_SIZE_PG_1G :
	     CMDQ_CREATE_CQ_PG_SIZE_PG_4K));

	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);

1465 1466 1467
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
1468
		goto fail;
1469 1470

	cq->id = le32_to_cpu(resp.xid);
1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487
	cq->dbr_base = res->dpi_tbl.dbr_bar_reg_iomem;
	cq->period = BNXT_QPLIB_QUEUE_START_PERIOD;
	init_waitqueue_head(&cq->waitq);

	bnxt_qplib_arm_cq_enable(cq);
	return 0;

fail:
	bnxt_qplib_free_hwq(res->pdev, &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;
1488
	struct creq_destroy_cq_resp resp;
1489
	u16 cmd_flags = 0;
1490
	int rc;
1491 1492 1493 1494

	RCFW_CMD_PREP(req, DESTROY_CQ, cmd_flags);

	req.cq_cid = cpu_to_le32(cq->id);
1495 1496 1497 1498
	rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req,
					  (void *)&resp, NULL, 0);
	if (rc)
		return rc;
1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569
	bnxt_qplib_free_hwq(res->pdev, &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)
{
	u32 sw_prod, sw_cons;
	struct bnxt_qplib_cqe *cqe;
	int rc = 0;

	/* Now complete all outstanding SQEs with FLUSHED_ERR */
	sw_prod = HWQ_CMP(sq->hwq.prod, &sq->hwq);
	cqe = *pcqe;
	while (*budget) {
		sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
		if (sw_cons == sw_prod) {
			sq->flush_in_progress = false;
			break;
		}
		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[sw_cons].wr_id;
		cqe->src_qp = qp->id;
		cqe->type = sq->swq[sw_cons].type;
		cqe++;
		(*budget)--;
		sq->hwq.cons++;
	}
	*pcqe = cqe;
	if (!(*budget) && HWQ_CMP(sq->hwq.cons, &sq->hwq) != sw_prod)
		/* Out of budget */
		rc = -EAGAIN;

	return rc;
}

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

	/* Flush the rest of the RQ */
	sw_prod = HWQ_CMP(rq->hwq.prod, &rq->hwq);
	cqe = *pcqe;
	while (*budget) {
		sw_cons = HWQ_CMP(rq->hwq.cons, &rq->hwq);
		if (sw_cons == sw_prod)
			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[sw_cons].wr_id;
		cqe++;
		(*budget)--;
		rq->hwq.cons++;
	}
	*pcqe = cqe;
	if (!*budget && HWQ_CMP(rq->hwq.cons, &rq->hwq) != sw_prod)
		/* Out of budget */
		rc = -EAGAIN;

	return rc;
}

1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666
/* 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 sw_sq_cons, u32 cqe_sq_cons)
{
	struct bnxt_qplib_q *sq = &qp->sq;
	struct bnxt_qplib_swq *swq;
	u32 peek_sw_cq_cons, peek_raw_cq_cons, peek_sq_cons_idx;
	struct cq_base *peek_hwcqe, **peek_hw_cqe_ptr;
	struct cq_req *peek_req_hwcqe;
	struct bnxt_qplib_qp *peek_qp;
	struct bnxt_qplib_q *peek_sq;
	int i, rc = 0;

	/* Normal mode */
	/* Check for the psn_search marking before completing */
	swq = &sq->swq[sw_sq_cons];
	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, sw_sq_cons, cqe_sq_cons);
		sq->condition = true;
		sq->send_phantom = true;

		/* TODO: Only ARM if the previous SQE is ARMALL */
		bnxt_qplib_arm_cq(cq, DBR_DBR_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_hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
			peek_hwcqe = &peek_hw_cqe_ptr[CQE_PG(peek_sw_cq_cons)]
						     [CQE_IDX(peek_sw_cq_cons)];
			/* If the next hwcqe is VALID */
			if (CQE_CMP_VALID(peek_hwcqe, peek_raw_cq_cons,
					  cq->hwq.max_elements)) {
				/* 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 = HWQ_CMP(le16_to_cpu(
						peek_req_hwcqe->sq_cons_idx) - 1
						, &sq->hwq);
					/* 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");
						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",
			cq_cons, qp->id, sw_sq_cons, cqe_sq_cons);
		rc = -EINVAL;
	}
out:
	return rc;
}

1667 1668
static int bnxt_qplib_cq_process_req(struct bnxt_qplib_cq *cq,
				     struct cq_req *hwcqe,
1669 1670
				     struct bnxt_qplib_cqe **pcqe, int *budget,
				     u32 cq_cons, struct bnxt_qplib_qp **lib_qp)
1671 1672 1673 1674
{
	struct bnxt_qplib_qp *qp;
	struct bnxt_qplib_q *sq;
	struct bnxt_qplib_cqe *cqe;
1675 1676
	u32 sw_sq_cons, cqe_sq_cons;
	struct bnxt_qplib_swq *swq;
1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687
	int rc = 0;

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

1688 1689
	cqe_sq_cons = HWQ_CMP(le16_to_cpu(hwcqe->sq_cons_idx), &sq->hwq);
	if (cqe_sq_cons > sq->hwq.max_elements) {
1690 1691 1692 1693
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: FP: CQ Process req reported ");
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
1694
			cqe_sq_cons, sq->hwq.max_elements);
1695 1696 1697 1698 1699 1700 1701 1702
		return -EINVAL;
	}
	/* If we were in the middle of flushing the SQ, continue */
	if (sq->flush_in_progress)
		goto flush;

	/* Require to walk the sq's swq to fabricate CQEs for all previously
	 * signaled SWQEs due to CQE aggregation from the current sq cons
1703
	 * to the cqe_sq_cons
1704 1705 1706
	 */
	cqe = *pcqe;
	while (*budget) {
1707 1708 1709
		sw_sq_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
		if (sw_sq_cons == cqe_sq_cons)
			/* Done */
1710
			break;
1711 1712

		swq = &sq->swq[sw_sq_cons];
1713 1714 1715 1716
		memset(cqe, 0, sizeof(*cqe));
		cqe->opcode = CQ_BASE_CQE_TYPE_REQ;
		cqe->qp_handle = (u64)(unsigned long)qp;
		cqe->src_qp = qp->id;
1717 1718 1719 1720
		cqe->wr_id = swq->wr_id;
		if (cqe->wr_id == BNXT_QPLIB_FENCE_WRID)
			goto skip;
		cqe->type = swq->type;
1721 1722 1723 1724 1725

		/* 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
		 */
1726
		if (HWQ_CMP((sw_sq_cons + 1), &sq->hwq) == cqe_sq_cons &&
1727 1728 1729 1730 1731 1732
		    hwcqe->status != CQ_REQ_STATUS_OK) {
			cqe->status = hwcqe->status;
			dev_err(&cq->hwq.pdev->dev,
				"QPLIB: FP: CQ Processed Req ");
			dev_err(&cq->hwq.pdev->dev,
				"QPLIB: wr_id[%d] = 0x%llx with status 0x%x",
1733
				sw_sq_cons, cqe->wr_id, cqe->status);
1734 1735 1736 1737 1738
			cqe++;
			(*budget)--;
			sq->flush_in_progress = true;
			/* Must block new posting of SQ and RQ */
			qp->state = CMDQ_MODIFY_QP_NEW_STATE_ERR;
1739 1740
			sq->condition = false;
			sq->single = false;
1741
		} else {
1742 1743 1744 1745 1746 1747 1748
			if (swq->flags & SQ_SEND_FLAGS_SIGNAL_COMP) {
				/* Before we complete, do WA 9060 */
				if (do_wa9060(qp, cq, cq_cons, sw_sq_cons,
					      cqe_sq_cons)) {
					*lib_qp = qp;
					goto out;
				}
1749 1750 1751 1752 1753
				cqe->status = CQ_REQ_STATUS_OK;
				cqe++;
				(*budget)--;
			}
		}
1754
skip:
1755
		sq->hwq.cons++;
1756 1757
		if (sq->single)
			break;
1758
	}
1759
out:
1760
	*pcqe = cqe;
1761
	if (HWQ_CMP(sq->hwq.cons, &sq->hwq) != cqe_sq_cons) {
1762 1763 1764 1765
		/* Out of budget */
		rc = -EAGAIN;
		goto done;
	}
1766 1767 1768 1769 1770
	/*
	 * Back to normal completion mode only after it has completed all of
	 * the WC for this CQE
	 */
	sq->single = false;
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099
	if (!sq->flush_in_progress)
		goto done;
flush:
	/* Require to walk the sq's swq to fabricate CQEs for all
	 * previously posted SWQEs due to the error CQE received
	 */
	rc = __flush_sq(sq, qp, pcqe, budget);
	if (!rc)
		sq->flush_in_progress = false;
done:
	return rc;
}

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_qp *qp;
	struct bnxt_qplib_q *rq;
	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, "QPLIB: process_cq RC qp is NULL");
		return -EINVAL;
	}
	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;
	rq = &qp->rq;
	if (wr_id_idx > rq->hwq.max_elements) {
		dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process RC ");
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: wr_id idx 0x%x exceeded RQ max 0x%x",
			wr_id_idx, rq->hwq.max_elements);
		return -EINVAL;
	}
	if (rq->flush_in_progress)
		goto flush_rq;

	cqe->wr_id = rq->swq[wr_id_idx].wr_id;
	cqe++;
	(*budget)--;
	rq->hwq.cons++;
	*pcqe = cqe;

	if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
		rq->flush_in_progress = true;
flush_rq:
		rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_RC, pcqe, budget);
		if (!rc)
			rq->flush_in_progress = false;
	}
	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_qp *qp;
	struct bnxt_qplib_q *rq;
	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, "QPLIB: process_cq UD qp is NULL");
		return -EINVAL;
	}
	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);
	cqe->flags = le16_to_cpu(hwcqe->flags);
	cqe->status = hwcqe->status;
	cqe->qp_handle = (u64)(unsigned long)qp;
	memcpy(cqe->smac, hwcqe->src_mac, 6);
	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);

	rq = &qp->rq;
	if (wr_id_idx > rq->hwq.max_elements) {
		dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process UD ");
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: wr_id idx %#x exceeded RQ max %#x",
			wr_id_idx, rq->hwq.max_elements);
		return -EINVAL;
	}
	if (rq->flush_in_progress)
		goto flush_rq;

	cqe->wr_id = rq->swq[wr_id_idx].wr_id;
	cqe++;
	(*budget)--;
	rq->hwq.cons++;
	*pcqe = cqe;

	if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
		rq->flush_in_progress = true;
flush_rq:
		rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_UD, pcqe, budget);
		if (!rc)
			rq->flush_in_progress = false;
	}
	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_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,
			"QPLIB: process_cq Raw/QP1 qp is NULL");
		return -EINVAL;
	}
	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);

	rq = &qp->rq;
	if (wr_id_idx > rq->hwq.max_elements) {
		dev_err(&cq->hwq.pdev->dev, "QPLIB: FP: CQ Process Raw/QP1 RQ wr_id ");
		dev_err(&cq->hwq.pdev->dev, "QPLIB: ix 0x%x exceeded RQ max 0x%x",
			wr_id_idx, rq->hwq.max_elements);
		return -EINVAL;
	}
	if (rq->flush_in_progress)
		goto flush_rq;

	cqe->wr_id = rq->swq[wr_id_idx].wr_id;
	cqe++;
	(*budget)--;
	rq->hwq.cons++;
	*pcqe = cqe;

	if (hwcqe->status != CQ_RES_RC_STATUS_OK) {
		rq->flush_in_progress = true;
flush_rq:
		rc = __flush_rq(rq, qp, CQ_BASE_CQE_TYPE_RES_RAWETH_QP1, pcqe,
				budget);
		if (!rc)
			rq->flush_in_progress = false;
	}
	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 sw_cons = 0, cqe_cons;
	int rc = 0;
	u8 opcode = 0;

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

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

	if (cqe_cons > sq->hwq.max_elements) {
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: FP: CQ Process terminal reported ");
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: sq_cons_idx 0x%x which exceeded max 0x%x",
			cqe_cons, sq->hwq.max_elements);
		goto do_rq;
	}
	/* If we were in the middle of flushing, continue */
	if (sq->flush_in_progress)
		goto flush_sq;

	/* 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) {
		sw_cons = HWQ_CMP(sq->hwq.cons, &sq->hwq);
		if (sw_cons == cqe_cons)
			break;
		if (sq->swq[sw_cons].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[sw_cons].wr_id;
			cqe->type = sq->swq[sw_cons].type;
			cqe++;
			(*budget)--;
		}
		sq->hwq.cons++;
	}
	*pcqe = cqe;
	if (!(*budget) && sw_cons != cqe_cons) {
		/* Out of budget */
		rc = -EAGAIN;
		goto sq_done;
	}
	sq->flush_in_progress = true;
flush_sq:
	rc = __flush_sq(sq, qp, pcqe, budget);
	if (!rc)
		sq->flush_in_progress = false;
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->hwq.max_elements) {
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: FP: CQ Processed terminal ");
		dev_err(&cq->hwq.pdev->dev,
			"QPLIB: reported rq_cons_idx 0x%x exceeds max 0x%x",
			cqe_cons, rq->hwq.max_elements);
		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
	 */
	rq->flush_in_progress = true;
	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:
		opcode = CQ_BASE_CQE_TYPE_RES_UD;
		break;
	}

	rc = __flush_rq(rq, qp, opcode, pcqe, budget);
	if (!rc)
		rq->flush_in_progress = false;
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,
			"QPLIB: FP: CQ Process Cutoff Error status = 0x%x",
			hwcqe->status);
		return -EINVAL;
	}
	clear_bit(CQ_FLAGS_RESIZE_IN_PROG, &cq->flags);
	wake_up_interruptible(&cq->waitq);

	return 0;
}

int bnxt_qplib_poll_cq(struct bnxt_qplib_cq *cq, struct bnxt_qplib_cqe *cqe,
2100
		       int num_cqes, struct bnxt_qplib_qp **lib_qp)
2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124
{
	struct cq_base *hw_cqe, **hw_cqe_ptr;
	unsigned long flags;
	u32 sw_cons, raw_cons;
	int budget, rc = 0;

	spin_lock_irqsave(&cq->hwq.lock, flags);
	raw_cons = cq->hwq.cons;
	budget = num_cqes;

	while (budget) {
		sw_cons = HWQ_CMP(raw_cons, &cq->hwq);
		hw_cqe_ptr = (struct cq_base **)cq->hwq.pbl_ptr;
		hw_cqe = &hw_cqe_ptr[CQE_PG(sw_cons)][CQE_IDX(sw_cons)];

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

		/* 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,
2125 2126
						       &cqe, &budget,
						       sw_cons, lib_qp);
2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191
			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,
				"QPLIB: process_cq unknown type 0x%lx",
				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,
				"QPLIB: process_cqe error rc = 0x%x", rc);
		}
		raw_cons++;
	}
	if (cq->hwq.cons != raw_cons) {
		cq->hwq.cons = raw_cons;
		bnxt_qplib_arm_cq(cq, DBR_DBR_TYPE_CQ);
	}
exit:
	spin_unlock_irqrestore(&cq->hwq.lock, flags);
	return num_cqes - budget;
}

void bnxt_qplib_req_notify_cq(struct bnxt_qplib_cq *cq, u32 arm_type)
{
	unsigned long flags;

	spin_lock_irqsave(&cq->hwq.lock, flags);
	if (arm_type)
		bnxt_qplib_arm_cq(cq, arm_type);

	spin_unlock_irqrestore(&cq->hwq.lock, flags);
}