From mboxrd@z Thu Jan 1 00:00:00 1970 From: Selvin Xavier Subject: [PATCH for bnxt_re V4 20/21] RDMA/bnxt_re: Add QP event handling Date: Wed, 21 Dec 2016 03:42:09 -0800 Message-ID: <1482320530-5344-21-git-send-email-selvin.xavier@broadcom.com> References: <1482320530-5344-1-git-send-email-selvin.xavier@broadcom.com> Return-path: In-Reply-To: <1482320530-5344-1-git-send-email-selvin.xavier@broadcom.com> Sender: netdev-owner@vger.kernel.org To: dledford@redhat.com, linux-rdma@vger.kernel.org Cc: netdev@vger.kernel.org, michael.chan@broadcom.com, Selvin Xavier , Eddie Wai , Devesh Sharma , Somnath Kotur , Sriharsha Basavapatna List-Id: linux-rdma@vger.kernel.org Implements callback handler for processing Async events related to a QP. This patch also implements the control path command completion handling. v3: Removes unwanted braces Signed-off-by: Eddie Wai Signed-off-by: Devesh Sharma Signed-off-by: Somnath Kotur Signed-off-by: Sriharsha Basavapatna Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 47 ++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c index 9144b5a..a000397 100644 --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c @@ -257,6 +257,44 @@ static int bnxt_qplib_process_func_event(struct bnxt_qplib_rcfw *rcfw, return 0; } +static int bnxt_qplib_process_qp_event(struct bnxt_qplib_rcfw *rcfw, + struct creq_qp_event *qp_event) +{ + struct bnxt_qplib_crsq *crsq = &rcfw->crsq; + struct bnxt_qplib_hwq *cmdq = &rcfw->cmdq; + struct bnxt_qplib_crsqe *crsqe; + u16 cbit, cookie, blocked = 0; + unsigned long flags; + u32 sw_cons; + + switch (qp_event->event) { + case CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION: + break; + default: + /* Command Response */ + spin_lock_irqsave(&cmdq->lock, flags); + sw_cons = HWQ_CMP(crsq->cons, crsq); + crsqe = &crsq->crsq[sw_cons]; + crsq->cons++; + memcpy(&crsqe->qp_event, qp_event, sizeof(crsqe->qp_event)); + + cookie = le16_to_cpu(crsqe->qp_event.cookie); + blocked = cookie & RCFW_CMD_IS_BLOCKING; + cookie &= RCFW_MAX_COOKIE_VALUE; + cbit = cookie % RCFW_MAX_OUTSTANDING_CMD; + if (!test_and_clear_bit(cbit, rcfw->cmdq_bitmap)) + dev_warn(&rcfw->pdev->dev, + "QPLIB: CMD bit %d was not requested", cbit); + + cmdq->cons += crsqe->req_size; + spin_unlock_irqrestore(&cmdq->lock, flags); + if (!blocked) + wake_up(&rcfw->waitq); + break; + } + return 0; +} + /* SP - CREQ Completion handlers */ static void bnxt_qplib_service_creq(unsigned long data) { @@ -280,6 +318,15 @@ static void bnxt_qplib_service_creq(unsigned long data) type = creqe->type & CREQ_BASE_TYPE_MASK; switch (type) { case CREQ_BASE_TYPE_QP_EVENT: + if (!bnxt_qplib_process_qp_event + (rcfw, (struct creq_qp_event *)creqe)) + rcfw->creq_qp_event_processed++; + else { + dev_warn(&rcfw->pdev->dev, "QPLIB: crsqe with"); + dev_warn(&rcfw->pdev->dev, + "QPLIB: type = 0x%x not handled", + type); + } break; case CREQ_BASE_TYPE_FUNC_EVENT: if (!bnxt_qplib_process_func_event -- 2.5.5