From patchwork Mon May 6 13:53:35 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shiraz Saleem X-Patchwork-Id: 10931095 X-Patchwork-Delegate: jgg@ziepe.ca Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2F14D15A6 for ; Mon, 6 May 2019 13:55:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1AA33286AE for ; Mon, 6 May 2019 13:55:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 192BC28762; Mon, 6 May 2019 13:55:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AD2D428746 for ; Mon, 6 May 2019 13:54:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726220AbfEFNyF (ORCPT ); Mon, 6 May 2019 09:54:05 -0400 Received: from mga12.intel.com ([192.55.52.136]:48135 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726046AbfEFNyE (ORCPT ); Mon, 6 May 2019 09:54:04 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 May 2019 06:54:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,438,1549958400"; d="scan'208";a="344291839" Received: from ssaleem-mobl4.amr.corp.intel.com ([10.255.35.243]) by fmsmga006.fm.intel.com with ESMTP; 06 May 2019 06:54:03 -0700 From: Shiraz Saleem To: dledford@redhat.com, jgg@ziepe.ca Cc: linux-rdma@vger.kernel.org, Shiraz Saleem , Selvin Xavier , Devesh Sharma Subject: [PATCH v3 rdma-next 4/6] RDMA/bnxt_re: Use core helpers to get aligned DMA address Date: Mon, 6 May 2019 08:53:35 -0500 Message-Id: <20190506135337.11324-5-shiraz.saleem@intel.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20190506135337.11324-1-shiraz.saleem@intel.com> References: <20190506135337.11324-1-shiraz.saleem@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Call the core helpers to retrieve the HW aligned address to use for the MR, within a supported bnxt_re page size. Remove checking the umem->hugtetlb flag as it is no longer required. The new DMA block iterator will return the 2M aligned address if the MR is backed by 2M huge pages. Cc: Selvin Xavier Cc: Devesh Sharma Acked-by: Selvin Xavier Signed-off-by: Shiraz Saleem --- drivers/infiniband/hw/bnxt_re/ib_verbs.c | 27 ++++++++++----------------- 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 3fcc77c..311d541 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -3501,17 +3501,12 @@ static int fill_umem_pbl_tbl(struct ib_umem *umem, u64 *pbl_tbl_orig, int page_shift) { u64 *pbl_tbl = pbl_tbl_orig; - u64 paddr; - u64 page_mask = (1ULL << page_shift) - 1; - struct sg_dma_page_iter sg_iter; + u64 page_size = BIT_ULL(page_shift); + struct ib_block_iter biter; + + rdma_for_each_block(umem->sg_head.sgl, &biter, umem->nmap, page_size) + *pbl_tbl++ = rdma_block_iter_dma_address(&biter); - for_each_sg_dma_page (umem->sg_head.sgl, &sg_iter, umem->nmap, 0) { - paddr = sg_page_iter_dma_address(&sg_iter); - if (pbl_tbl == pbl_tbl_orig) - *pbl_tbl++ = paddr & ~page_mask; - else if ((paddr & page_mask) == 0) - *pbl_tbl++ = paddr; - } return pbl_tbl - pbl_tbl_orig; } @@ -3573,7 +3568,9 @@ struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, goto free_umem; } - page_shift = PAGE_SHIFT; + page_shift = __ffs(ib_umem_find_best_pgsz(umem, + BNXT_RE_PAGE_SIZE_4K | BNXT_RE_PAGE_SIZE_2M, + virt_addr)); if (!bnxt_re_page_size_ok(page_shift)) { dev_err(rdev_to_dev(rdev), "umem page size unsupported!"); @@ -3581,17 +3578,13 @@ struct ib_mr *bnxt_re_reg_user_mr(struct ib_pd *ib_pd, u64 start, u64 length, goto fail; } - if (!umem->hugetlb && length > BNXT_RE_MAX_MR_SIZE_LOW) { + if (page_shift == BNXT_RE_PAGE_SHIFT_4K && + length > BNXT_RE_MAX_MR_SIZE_LOW) { dev_err(rdev_to_dev(rdev), "Requested MR Sz:%llu Max sup:%llu", length, (u64)BNXT_RE_MAX_MR_SIZE_LOW); rc = -EINVAL; goto fail; } - if (umem->hugetlb && length > BNXT_RE_PAGE_SIZE_2M) { - page_shift = BNXT_RE_PAGE_SHIFT_2M; - dev_warn(rdev_to_dev(rdev), "umem hugetlb set page_size %x", - 1 << page_shift); - } /* Map umem buf ptrs to the PBL */ umem_pgs = fill_umem_pbl_tbl(umem, pbl_tbl, page_shift);