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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 E08FBC8300B for ; Wed, 29 Apr 2020 13:38:29 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B835320B80 for ; Wed, 29 Apr 2020 13:38:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B835320B80 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 9A76C86AB5; Wed, 29 Apr 2020 13:38:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8hf5sGm9UiEU; Wed, 29 Apr 2020 13:38:22 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 569A186B67; Wed, 29 Apr 2020 13:38:05 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 3B13EC0864; Wed, 29 Apr 2020 13:38:05 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 80C08C088A; Wed, 29 Apr 2020 13:37:55 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 6C55586A85; Wed, 29 Apr 2020 13:37:55 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id bKZMGNxxfUPo; Wed, 29 Apr 2020 13:37:54 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by fraxinus.osuosl.org (Postfix) with ESMTPS id B762386A63; Wed, 29 Apr 2020 13:37:54 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id 19246F0C; Wed, 29 Apr 2020 15:37:41 +0200 (CEST) From: Joerg Roedel To: Joerg Roedel , Will Deacon , Robin Murphy , Marek Szyprowski , Kukjin Kim , Krzysztof Kozlowski , David Woodhouse , Lu Baolu , Andy Gross , Bjorn Andersson , Matthias Brugger , Rob Clark , Heiko Stuebner , Gerald Schaefer , Thierry Reding , Jonathan Hunter , Jean-Philippe Brucker Subject: [PATCH v3 30/34] iommu/exynos: Use first SYSMMU in controllers list for IOMMU core Date: Wed, 29 Apr 2020 15:37:08 +0200 Message-Id: <20200429133712.31431-31-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200429133712.31431-1-joro@8bytes.org> References: <20200429133712.31431-1-joro@8bytes.org> Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Daniel Drake , linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, Joerg Roedel , linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org, virtualization@lists.linux-foundation.org, jonathan.derrick@intel.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" From: Joerg Roedel On Exynos platforms there can be more than one SYSMMU (IOMMU) for one DMA master device. Since the IOMMU core code expects only one hardware IOMMU, use the first SYSMMU in the list. Tested-by: Marek Szyprowski Acked-by: Marek Szyprowski Signed-off-by: Joerg Roedel --- drivers/iommu/exynos-iommu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 186ff5cc975c..09cdd163560a 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -1261,6 +1261,11 @@ static int exynos_iommu_add_device(struct device *dev) } iommu_group_put(group); + /* There is always at least one entry, see exynos_iommu_of_xlate() */ + data = list_first_entry(&owner->controllers, + struct sysmmu_drvdata, owner_node); + iommu_device_link(&data->iommu, dev); + return 0; } @@ -1286,6 +1291,11 @@ static void exynos_iommu_remove_device(struct device *dev) list_for_each_entry(data, &owner->controllers, owner_node) device_link_del(data->link); + + /* There is always at least one entry, see exynos_iommu_of_xlate() */ + data = list_first_entry(&owner->controllers, + struct sysmmu_drvdata, owner_node); + iommu_device_unlink(&data->iommu, dev); } static int exynos_iommu_of_xlate(struct device *dev, -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu