From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 73E8ECA9ECF for ; Mon, 4 Nov 2019 07:01:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5154520848 for ; Mon, 4 Nov 2019 07:01:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728135AbfKDHB4 (ORCPT ); Mon, 4 Nov 2019 02:01:56 -0500 Received: from mailgw01.mediatek.com ([210.61.82.183]:43487 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726441AbfKDHB4 (ORCPT ); Mon, 4 Nov 2019 02:01:56 -0500 X-UUID: 5e9b9f67176d4ae0970fb4b8db5d9574-20191104 X-UUID: 5e9b9f67176d4ae0970fb4b8db5d9574-20191104 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1417561631; Mon, 04 Nov 2019 15:01:49 +0800 Received: from mtkcas09.mediatek.inc (172.21.101.178) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 4 Nov 2019 15:01:46 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkcas09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 4 Nov 2019 15:01:45 +0800 From: Yong Wu To: Matthias Brugger , Joerg Roedel , Will Deacon CC: Evan Green , Robin Murphy , Tomasz Figa , , , , , , , , Nicolas Boichat , , , , Subject: [PATCH v5 3/7] iommu/mediatek: Use gather to achieve the tlb range flush Date: Mon, 4 Nov 2019 15:01:04 +0800 Message-ID: <1572850868-22315-4-git-send-email-yong.wu@mediatek.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1572850868-22315-1-git-send-email-yong.wu@mediatek.com> References: <1572850868-22315-1-git-send-email-yong.wu@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use the iommu_gather mechanism to achieve the tlb range flush. Gather the iova range in the "tlb_add_page", then flush the merged iova range in iotlb_sync. Suggested-by: Tomasz Figa Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index c2f6c78..81ac95f 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -245,11 +245,9 @@ static void mtk_iommu_tlb_flush_page_nosync(struct iommu_iotlb_gather *gather, void *cookie) { struct mtk_iommu_data *data = cookie; - unsigned long flags; + struct iommu_domain *domain = &data->m4u_dom->domain; - spin_lock_irqsave(&data->tlb_lock, flags); - mtk_iommu_tlb_add_flush_nosync(iova, granule, granule, true, cookie); - spin_unlock_irqrestore(&data->tlb_lock, flags); + iommu_iotlb_gather_add_page(domain, gather, iova, granule); } static const struct iommu_flush_ops mtk_iommu_flush_ops = { @@ -469,9 +467,15 @@ static void mtk_iommu_iotlb_sync(struct iommu_domain *domain, struct iommu_iotlb_gather *gather) { struct mtk_iommu_data *data = mtk_iommu_get_m4u_data(); + size_t length = gather->end - gather->start; unsigned long flags; + if (gather->start == ULONG_MAX) + return; + spin_lock_irqsave(&data->tlb_lock, flags); + mtk_iommu_tlb_add_flush_nosync(gather->start, length, gather->pgsize, + false, data); mtk_iommu_tlb_sync(data); spin_unlock_irqrestore(&data->tlb_lock, flags); } -- 1.9.1