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Thu, 20 Feb 2025 10:56:20 -0800 (PST) Received: from sxavier-dev.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-addee79a984sm9572262a12.32.2025.02.20.10.56.16 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 20 Feb 2025 10:56:19 -0800 (PST) From: Selvin Xavier To: leon@kernel.org, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, andrew.gospodarek@broadcom.com, kalesh-anakkur.purayil@broadcom.com, netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, abeni@redhat.com, horms@kernel.org, michael.chan@broadcom.com, Kashyap Desai , Selvin Xavier Subject: [PATCH rdma-next 8/9] RDMA/bnxt_re: Dump the HW context information Date: Thu, 20 Feb 2025 10:34:55 -0800 Message-Id: <1740076496-14227-9-git-send-email-selvin.xavier@broadcom.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> References: <1740076496-14227-1-git-send-email-selvin.xavier@broadcom.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: From: Kashyap Desai Dump the cached HW context information for QP/CQ/SRQ/MRs when the L2 driver queries using get_dump_data Signed-off-by: Kashyap Desai Signed-off-by: Selvin Xavier --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 10 ++++----- drivers/infiniband/hw/bnxt_re/main.c | 38 ++++++++++++++++++++++++++++++++ 2 files changed, 42 insertions(+), 6 deletions(-) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index a1ee6ca..dca435e 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -1079,7 +1079,7 @@ int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) struct bnxt_qplib_nq *rcq_nq = NULL; unsigned int flags; void *ctx_sb_data = NULL; - bool do_snapdump; + bool do_snapdump = false; u16 ctx_size; int rc; @@ -1087,17 +1087,15 @@ int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata) bnxt_re_debug_rem_qpinfo(rdev, qp); bnxt_qplib_flush_cqn_wq(&qp->qplib_qp); - ctx_size = qplib_qp->ctx_size_sb; + ctx_size = rdev->rcfw.qp_ctxm_size; if (ctx_size) ctx_sb_data = vzalloc(ctx_size); - do_snapdump = test_bit(QP_FLAGS_CAPTURE_SNAPDUMP, &qplib_qp->flags); rc = bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp, ctx_size, ctx_sb_data); if (rc) ibdev_err(&rdev->ibdev, "Failed to destroy HW QP"); - else - bnxt_re_save_resource_context(rdev, ctx_sb_data, - BNXT_RE_RES_TYPE_QP, do_snapdump); + do_snapdump = test_bit(QP_FLAGS_CAPTURE_SNAPDUMP, &qplib_qp->flags); + bnxt_re_save_resource_context(rdev, ctx_sb_data, BNXT_RE_RES_TYPE_QP, do_snapdump); vfree(ctx_sb_data); if (rdma_is_kernel_res(&qp->ib_qp.res)) { diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c index afde0ef..b2bf0d0 100644 --- a/drivers/infiniband/hw/bnxt_re/main.c +++ b/drivers/infiniband/hw/bnxt_re/main.c @@ -506,6 +506,44 @@ static void bnxt_re_start_irq(void *handle, struct bnxt_msix_entry *ent) static void bnxt_re_dump_ctx(struct bnxt_re_dev *rdev, u32 seg_id, void *buf, u32 buf_len) { + int ctx_index, i; + void *ctx_data; + u16 ctx_size; + + switch (seg_id) { + case BNXT_SEGMENT_QP_CTX: + ctx_data = rdev->rcfw.qp_ctxm_data; + ctx_size = rdev->rcfw.qp_ctxm_size; + ctx_index = rdev->rcfw.qp_ctxm_data_index; + break; + case BNXT_SEGMENT_CQ_CTX: + ctx_data = rdev->rcfw.cq_ctxm_data; + ctx_size = rdev->rcfw.cq_ctxm_size; + ctx_index = rdev->rcfw.cq_ctxm_data_index; + break; + case BNXT_SEGMENT_MR_CTX: + ctx_data = rdev->rcfw.mrw_ctxm_data; + ctx_size = rdev->rcfw.mrw_ctxm_size; + ctx_index = rdev->rcfw.mrw_ctxm_data_index; + break; + case BNXT_SEGMENT_SRQ_CTX: + ctx_data = rdev->rcfw.srq_ctxm_data; + ctx_size = rdev->rcfw.srq_ctxm_size; + ctx_index = rdev->rcfw.srq_ctxm_data_index; + break; + default: + return; + } + + if (!ctx_data || (ctx_size * BNXT_RE_MAX_QDUMP_ENTRIES) > buf_len) + return; + + for (i = ctx_index; i < BNXT_RE_MAX_QDUMP_ENTRIES + ctx_index; i++) { + memcpy(buf, ctx_data + ((i % BNXT_RE_MAX_QDUMP_ENTRIES) * ctx_size), + ctx_size); + buf += ctx_size; + } + } /*