From patchwork Thu Apr 23 11:15:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weihang Li X-Patchwork-Id: 11505483 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1E52E913 for ; Thu, 23 Apr 2020 11:16:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0FEFB2077D for ; Thu, 23 Apr 2020 11:16:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727877AbgDWLQD (ORCPT ); Thu, 23 Apr 2020 07:16:03 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:49402 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727862AbgDWLQC (ORCPT ); Thu, 23 Apr 2020 07:16:02 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 8ECFC90A767B05BBCC8B; Thu, 23 Apr 2020 19:16:00 +0800 (CST) Received: from localhost.localdomain (10.67.165.24) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.487.0; Thu, 23 Apr 2020 19:15:54 +0800 From: Weihang Li To: , CC: , , Subject: [PATCH for-next 5/5] RDMA/hns: Optimize SRQ buffer size calculating process Date: Thu, 23 Apr 2020 19:15:50 +0800 Message-ID: <1587640550-16777-6-git-send-email-liweihang@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1587640550-16777-1-git-send-email-liweihang@huawei.com> References: <1587640550-16777-1-git-send-email-liweihang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.165.24] X-CFilter-Loop: Reflected Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Xi Wang Optimizes the SRQ's WQE buffer parameters calculating process to make the codes more readable. Signed-off-by: Xi Wang Signed-off-by: Weihang Li --- drivers/infiniband/hw/hns/hns_roce_device.h | 2 +- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 29 ++++++++++++++--------------- drivers/infiniband/hw/hns/hns_roce_srq.c | 16 ++++++++-------- 3 files changed, 23 insertions(+), 24 deletions(-) diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index eaebd4b..ecaaad1 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -472,7 +472,7 @@ struct hns_roce_cq { struct hns_roce_idx_que { struct hns_roce_mtr mtr; - int entry_sz; + int entry_shift; unsigned long *bitmap; }; diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 0b79daf..f70370d 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -699,6 +699,12 @@ static void *get_srq_wqe(struct hns_roce_srq *srq, int n) return hns_roce_buf_offset(srq->buf_mtr.kmem, n << srq->wqe_shift); } +static void *get_idx_buf(struct hns_roce_idx_que *idx_que, int n) +{ + return hns_roce_buf_offset(idx_que->mtr.kmem, + n << idx_que->entry_shift); +} + static void hns_roce_free_srq_wqe(struct hns_roce_srq *srq, int wqe_index) { /* always called with interrupts disabled. */ @@ -725,16 +731,6 @@ static int find_empty_entry(struct hns_roce_idx_que *idx_que, return wqe_idx; } -static void fill_idx_queue(struct hns_roce_idx_que *idx_que, - int cur_idx, int wqe_idx) -{ - unsigned int *addr; - - addr = (unsigned int *)hns_roce_buf_offset(idx_que->mtr.kmem, - cur_idx * idx_que->entry_sz); - *addr = wqe_idx; -} - static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr, const struct ib_recv_wr **bad_wr) @@ -744,6 +740,7 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq, struct hns_roce_v2_wqe_data_seg *dseg; struct hns_roce_v2_db srq_db; unsigned long flags; + __le32 *srq_idx; int ret = 0; int wqe_idx; void *wqe; @@ -775,7 +772,6 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq, break; } - fill_idx_queue(&srq->idx_que, ind, wqe_idx); wqe = get_srq_wqe(srq, wqe_idx); dseg = (struct hns_roce_v2_wqe_data_seg *)wqe; @@ -791,6 +787,9 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq, dseg[i].addr = 0; } + srq_idx = get_idx_buf(&srq->idx_que, ind); + *srq_idx = cpu_to_le32(wqe_idx); + srq->wrid[wqe_idx] = wr->wr_id; ind = (ind + 1) & (srq->wqe_cnt - 1); } @@ -4901,8 +4900,8 @@ static void hns_roce_v2_write_srqc(struct hns_roce_dev *hr_dev, roce_set_field(srq_context->byte_4_srqn_srqst, SRQC_BYTE_4_SRQ_WQE_HOP_NUM_M, SRQC_BYTE_4_SRQ_WQE_HOP_NUM_S, - (hr_dev->caps.srqwqe_hop_num == HNS_ROCE_HOP_NUM_0 ? 0 : - hr_dev->caps.srqwqe_hop_num)); + to_hr_hem_hopnum(hr_dev->caps.srqwqe_hop_num, + srq->wqe_cnt)); roce_set_field(srq_context->byte_4_srqn_srqst, SRQC_BYTE_4_SRQ_SHIFT_M, SRQC_BYTE_4_SRQ_SHIFT_S, ilog2(srq->wqe_cnt)); @@ -4944,8 +4943,8 @@ static void hns_roce_v2_write_srqc(struct hns_roce_dev *hr_dev, roce_set_field(srq_context->byte_44_idxbufpgsz_addr, SRQC_BYTE_44_SRQ_IDX_HOP_NUM_M, SRQC_BYTE_44_SRQ_IDX_HOP_NUM_S, - hr_dev->caps.idx_hop_num == HNS_ROCE_HOP_NUM_0 ? 0 : - hr_dev->caps.idx_hop_num); + to_hr_hem_hopnum(hr_dev->caps.idx_hop_num, + srq->wqe_cnt)); roce_set_field(srq_context->byte_44_idxbufpgsz_addr, SRQC_BYTE_44_SRQ_IDX_BA_PG_SZ_M, diff --git a/drivers/infiniband/hw/hns/hns_roce_srq.c b/drivers/infiniband/hw/hns/hns_roce_srq.c index e413a97..6e5a2ad 100644 --- a/drivers/infiniband/hw/hns/hns_roce_srq.c +++ b/drivers/infiniband/hw/hns/hns_roce_srq.c @@ -181,16 +181,15 @@ static int alloc_srq_buf(struct hns_roce_dev *hr_dev, struct hns_roce_srq *srq, { struct ib_device *ibdev = &hr_dev->ib_dev; struct hns_roce_buf_attr buf_attr = {}; - int sge_size; int err; - sge_size = roundup_pow_of_two(max(HNS_ROCE_SGE_SIZE, - HNS_ROCE_SGE_SIZE * srq->max_gs)); - - srq->wqe_shift = ilog2(sge_size); + srq->wqe_shift = ilog2(roundup_pow_of_two(max(HNS_ROCE_SGE_SIZE, + HNS_ROCE_SGE_SIZE * + srq->max_gs))); buf_attr.page_shift = hr_dev->caps.srqwqe_buf_pg_sz + PAGE_ADDR_SHIFT; - buf_attr.region[0].size = srq->wqe_cnt * sge_size; + buf_attr.region[0].size = to_hr_hem_entries_size(srq->wqe_cnt, + srq->wqe_shift); buf_attr.region[0].hopnum = hr_dev->caps.srqwqe_hop_num; buf_attr.region_count = 1; buf_attr.fixed_page = true; @@ -217,10 +216,11 @@ static int alloc_srq_idx(struct hns_roce_dev *hr_dev, struct hns_roce_srq *srq, struct hns_roce_buf_attr buf_attr = {}; int err; - srq->idx_que.entry_sz = HNS_ROCE_IDX_QUE_ENTRY_SZ; + srq->idx_que.entry_shift = ilog2(HNS_ROCE_IDX_QUE_ENTRY_SZ); buf_attr.page_shift = hr_dev->caps.idx_buf_pg_sz + PAGE_ADDR_SHIFT; - buf_attr.region[0].size = srq->wqe_cnt * HNS_ROCE_IDX_QUE_ENTRY_SZ; + buf_attr.region[0].size = to_hr_hem_entries_size(srq->wqe_cnt, + srq->idx_que.entry_shift); buf_attr.region[0].hopnum = hr_dev->caps.idx_hop_num; buf_attr.region_count = 1; buf_attr.fixed_page = true;