From patchwork Tue Apr 14 13:15:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joerg Roedel X-Patchwork-Id: 11487817 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 792AF174A for ; Tue, 14 Apr 2020 13:25:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 5762B2063A for ; Tue, 14 Apr 2020 13:25:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="F6GFlDrk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5762B2063A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=V4gjWu3gj+gPcuMx9Ppq+URPTCKxs8a4jkgLj8fIMZw=; b=F6GFlDrk0+kK2U0Wt+jNR7wnlE t86S7tCdBzOT/C5NuVVx+vlJ5vrnpfMfCIL0vfDONAu6qK1Zy3FVqfeiSJmNUkZiPGC7jLa+S1CAC ErcLGzO5H+BV6RiIkWeLc+NUJqmZfys/WtfOQqVDwc+lJPauGOBpd9vF4m/lLHI+V0dK9AHN2Bg1Q 5hxfUpvvYlyE3ldDxfBcWAA6OgWV+evzoINAghfVyDKtO+CvOcHgqLrJKDGaed0oOgnFYHODRZidG ZhCOM0Lr1/eyTg4XcdZx6qfSnURnTnfnXPQnXquy+zR69pVWP91eKf+ZgvxwjV+F5NhwZ2BGfJ/x0 V2q7Lb5g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jOLYf-0005ue-KY; Tue, 14 Apr 2020 13:24:57 +0000 Received: from 8bytes.org ([81.169.241.247] helo=theia.8bytes.org) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jOLQH-0002nS-Hi; Tue, 14 Apr 2020 13:16:22 +0000 Received: by theia.8bytes.org (Postfix, from userid 1000) id 470097E3; Tue, 14 Apr 2020 15:15:57 +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 v2 30/33] iommu/exynos: Use first SYSMMU in controllers list for IOMMU core Date: Tue, 14 Apr 2020 15:15:39 +0200 Message-Id: <20200414131542.25608-31-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200414131542.25608-1-joro@8bytes.org> References: <20200414131542.25608-1-joro@8bytes.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200414_061617_901652_2E5728C1 X-CRM114-Status: GOOD ( 12.52 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [81.169.241.247 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, Joerg Roedel , linux-mediatek@lists.infradead.org, linux-tegra@vger.kernel.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org 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. 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,