From patchwork Sun May 31 12:14:17 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Or Gerlitz X-Patchwork-Id: 6515881 Return-Path: X-Original-To: patchwork-linux-rdma@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4E8129F1C1 for ; Sun, 31 May 2015 12:15:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 44DA62061C for ; Sun, 31 May 2015 12:15:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B0FA205D3 for ; Sun, 31 May 2015 12:15:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757655AbbEaMPV (ORCPT ); Sun, 31 May 2015 08:15:21 -0400 Received: from [193.47.165.129] ([193.47.165.129]:37196 "EHLO mellanox.co.il" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756380AbbEaMPU (ORCPT ); Sun, 31 May 2015 08:15:20 -0400 Received: from Internal Mail-Server by MTLPINE1 (envelope-from ogerlitz@mellanox.com) with ESMTPS (AES256-SHA encrypted); 31 May 2015 15:14:07 +0300 Received: from r-vnc04.mtr.labs.mlnx (r-vnc04.mtr.labs.mlnx [10.208.0.116]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id t4VCEIet012491; Sun, 31 May 2015 15:14:19 +0300 From: Or Gerlitz To: Doug Ledford Cc: linux-rdma@vger.kernel.org, Amir Vadai , Tal Alon , Matan Barak , Or Gerlitz Subject: [PATCH for-next V2 9/9] IB/mlx4: Add support for CQ time-stamping Date: Sun, 31 May 2015 15:14:17 +0300 Message-Id: <1433074457-26437-10-git-send-email-ogerlitz@mellanox.com> X-Mailer: git-send-email 1.7.8.2 In-Reply-To: <1433074457-26437-1-git-send-email-ogerlitz@mellanox.com> References: <1433074457-26437-1-git-send-email-ogerlitz@mellanox.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Matan Barak This includes: * support allocation of CQ with the TIMESTAMP_COMPLETION creation flag. * add timestamp_mask and hca_core_clock to query_device, reporting the number of supported timestamp bits (mask) and the hca_core_clock frequency. * return hca core clock's offset in query_device vendor's data, this is needed in order to read the HCA's core clock. Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz --- drivers/infiniband/hw/mlx4/cq.c | 9 +++++-- drivers/infiniband/hw/mlx4/main.c | 38 ++++++++++++++++++++++++++++++++- drivers/infiniband/hw/mlx4/mlx4_ib.h | 16 ++++++++++++++ 3 files changed, 58 insertions(+), 5 deletions(-) diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 8e44aaa..36eb3d0 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -166,6 +166,7 @@ err_buf: return err; } +#define CQ_CREATE_FLAGS_SUPPORTED IB_CQ_FLAGS_TIMESTAMP_COMPLETION struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, const struct ib_cq_init_attr *attr, struct ib_ucontext *context, @@ -178,10 +179,10 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, struct mlx4_uar *uar; int err; - if (attr->flags) + if (entries < 1 || entries > dev->dev->caps.max_cqes) return ERR_PTR(-EINVAL); - if (entries < 1 || entries > dev->dev->caps.max_cqes) + if (attr->flags & ~CQ_CREATE_FLAGS_SUPPORTED) return ERR_PTR(-EINVAL); cq = kmalloc(sizeof *cq, GFP_KERNEL); @@ -194,6 +195,7 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, spin_lock_init(&cq->lock); cq->resize_buf = NULL; cq->resize_umem = NULL; + cq->create_flags = attr->flags; INIT_LIST_HEAD(&cq->send_qp_list); INIT_LIST_HEAD(&cq->recv_qp_list); @@ -237,7 +239,8 @@ struct ib_cq *mlx4_ib_create_cq(struct ib_device *ibdev, vector = dev->eq_table[vector % ibdev->num_comp_vectors]; err = mlx4_cq_alloc(dev->dev, entries, &cq->buf.mtt, uar, - cq->db.dma, &cq->mcq, vector, 0, 0); + cq->db.dma, &cq->mcq, vector, 0, + !!(cq->create_flags & IB_CQ_FLAGS_TIMESTAMP_COMPLETION)); if (err) goto err_dbmap; diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 832d571..c642bf0 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -140,10 +140,27 @@ static int mlx4_ib_query_device(struct ib_device *ibdev, struct ib_smp *out_mad = NULL; int err = -ENOMEM; int have_ib_ports; + struct mlx4_uverbs_ex_query_device cmd; + struct mlx4_uverbs_ex_query_device_resp resp = {.comp_mask = 0}; + struct mlx4_clock_params clock_params; - if (uhw->inlen || uhw->outlen) - return -EINVAL; + if (uhw->inlen) { + if (uhw->inlen < sizeof(cmd)) + return -EINVAL; + + err = ib_copy_from_udata(&cmd, uhw, sizeof(cmd)); + if (err) + return err; + + if (cmd.comp_mask) + return -EINVAL; + + if (cmd.reserved) + return -EINVAL; + } + resp.response_length = offsetof(typeof(resp), response_length) + + sizeof(resp.response_length); in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); if (!in_mad || !out_mad) @@ -233,7 +250,24 @@ static int mlx4_ib_query_device(struct ib_device *ibdev, props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * props->max_mcast_grp; props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; + props->hca_core_clock = dev->dev->caps.hca_core_clock; + props->timestamp_mask = 0xFFFFFFFFFFFFULL; + err = mlx4_get_internal_clock_params(dev->dev, &clock_params); + if (err) + goto out; + + if (uhw->outlen >= resp.response_length + sizeof(resp.hca_core_clock_offset)) { + resp.hca_core_clock_offset = clock_params.offset % PAGE_SIZE; + resp.response_length += sizeof(resp.hca_core_clock_offset); + resp.comp_mask |= QUERY_DEVICE_RESP_MASK_TIMESTAMP; + } + + if (uhw->outlen) { + err = ib_copy_to_udata(uhw, &resp, resp.response_length); + if (err) + goto out; + } out: kfree(in_mad); kfree(out_mad); diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h index f127efc..8421e15 100644 --- a/drivers/infiniband/hw/mlx4/mlx4_ib.h +++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h @@ -110,6 +110,7 @@ struct mlx4_ib_cq { struct mutex resize_mutex; struct ib_umem *umem; struct ib_umem *resize_umem; + int create_flags; /* List of qps that it serves.*/ struct list_head send_qp_list; struct list_head recv_qp_list; @@ -555,6 +556,21 @@ struct mlx4_ib_qp_tunnel_init_attr { u8 port; }; +struct mlx4_uverbs_ex_query_device { + __u32 comp_mask; + __u32 reserved; +}; + +enum query_device_resp_mask { + QUERY_DEVICE_RESP_MASK_TIMESTAMP = 1UL << 0, +}; + +struct mlx4_uverbs_ex_query_device_resp { + __u32 comp_mask; + __u32 response_length; + __u64 hca_core_clock_offset; +}; + static inline struct mlx4_ib_dev *to_mdev(struct ib_device *ibdev) { return container_of(ibdev, struct mlx4_ib_dev, ib_dev);