From patchwork Thu Aug 3 00:08:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 709695 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3FC9C10F19 for ; Thu, 3 Aug 2023 00:10:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233701AbjHCAKL (ORCPT ); Wed, 2 Aug 2023 20:10:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231396AbjHCAJw (ORCPT ); Wed, 2 Aug 2023 20:09:52 -0400 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2077.outbound.protection.outlook.com [40.107.93.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4FD5B3AAC; Wed, 2 Aug 2023 17:09:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=blF+8kSr7VOcTeLDBtZyzRCwu4I5+hE14x/Cpr8ykeoxaORfLyNYKXslfcT2uES41zNb4RLpyw95y2eOSn8OdYis53mijRFPlDQO91/2fJeqWW/kd0H9Hpqbtu8M7wW4I/I7h7+dg3pm4QByjxXOxKM0jPSIMvv6xaZtEy62tV6GwJUF26GzrkB572heEX7S+IwTEQ6aJllG5bn14VxJXU0vAmYR/BnZLG21R/sfp8vm4po5Wd6qP11fspwUc/gYHTGVeZ7wRTeWEgtfnoqVG9afTUeLFVr3dxT0MW5jRkk8umsBvizzcjM0pzUzwRs57TwOSTcMyO09BEV4pPKCDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=O8cvW84AteYGsHkKJoxDmgX1gvmm/kLqlAnWOZtGp1s=; b=d3YsHCHfWZzKzKbAg8VyFQ9t84mrS9Q6PfsEOyyPUg+Z86RPV10gxaJ9DAbsU+3A0bNS6/Sgml+z0SUphQT42YRyKM1omA74aErUrn6I/iYBfuM6BueygppX16c33ynH2zxEmaYkKNdltIk+xNuKe+1t3pL8PdtItGxuHsQelTZmsaj2GOZM1dA8nHYDE8+oeXrAhwT1gsHHhB0ZMMlwknN7z8AogD+HOmEr8gnlUYnubV4RZEZfDhIPvAhroZFkIhI1Tyav8vTM3xaXT4Q11XSFkjAVk1JjjfocMYDFj58uwDf7bpdFbzhk+RqaWUdvUG3Iv5k04RiQ+bsxktcHig== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=O8cvW84AteYGsHkKJoxDmgX1gvmm/kLqlAnWOZtGp1s=; b=kHhcmsf28oZhFH2Te8iaMg3eJdL6RMI7EnuCofFuYtz0lrRM7LQWxQ6j/56yNEi3qq+qwl3xp1rrwFrZEHVsrU3TQu2YzoLL4qAsig/8ClQ0OUQFXiXqgCc3MbB1O/If9PfdoYZ3/XbaVcRrO79El4lQlYfK3u3xsPOlls311hJxHiME9wqVXy35sCiHG2yQJzILJFlhCkdvs+kFtXJjkq4TyWH+RuWz56tnpXx6yKFORHV9+fSowAsdAYLgsCFK67nkXQB/I1Woe9Q+oInRMPpdYRkSuv/GlrUQZmYXeIml0JEU/R/U0cz3bL0S/2PN9nnEbqcuNnG4HqqQI2HPFw== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by MN0PR12MB5809.namprd12.prod.outlook.com (2603:10b6:208:375::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6631.44; Thu, 3 Aug 2023 00:08:20 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::5111:16e8:5afe:1da1%6]) with mapi id 15.20.6631.045; Thu, 3 Aug 2023 00:08:20 +0000 From: Jason Gunthorpe To: Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Christophe Leroy , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kevin Tian , Konrad Dybcio , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Russell King , linuxppc-dev@lists.ozlabs.org, Matthias Brugger , Matthew Rosato , Michael Ellerman , Nicholas Piggin , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang Cc: Lu Baolu , Dmitry Osipenko , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: [PATCH v6 20/25] iommu/sun50i: Add an IOMMU_IDENTITIY_DOMAIN Date: Wed, 2 Aug 2023 21:08:07 -0300 Message-ID: <20-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0283.namprd13.prod.outlook.com (2603:10b6:208:2bc::18) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|MN0PR12MB5809:EE_ X-MS-Office365-Filtering-Correlation-Id: b5d6420b-9c1f-4a3f-84a0-08db93b5bc30 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:LV2PR12MB5869.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230028)(4636009)(366004)(376002)(396003)(136003)(346002)(39860400002)(451199021)(110136005)(6512007)(54906003)(6486002)(6666004)(921005)(478600001)(38100700002)(41300700001)(5660300002)(316002)(66476007)(66946007)(8676002)(4326008)(8936002)(66556008)(2616005)(83380400001)(7406005)(26005)(107886003)(186003)(6506007)(7416002)(86362001)(36756003)(2906002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: b5d6420b-9c1f-4a3f-84a0-08db93b5bc30 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Aug 2023 00:08:16.1498 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: KkG28XrfXg4JL1hTJf5XAE25CkDZamlkGstmA/eHTbzSLcH/UgxXxBXxRE+0WIY2 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5809 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Prior to commit 1b932ceddd19 ("iommu: Remove detach_dev callbacks") the sun50i_iommu_detach_device() function was being called by ops->detach_dev(). This is an IDENTITY domain so convert sun50i_iommu_detach_device() into sun50i_iommu_identity_attach() and a full IDENTITY domain and thus hook it back up the same was as the old ops->detach_dev(). Signed-off-by: Jason Gunthorpe --- drivers/iommu/sun50i-iommu.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index 74c5cb93e90027..0bf08b120cf105 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -757,21 +757,32 @@ static void sun50i_iommu_detach_domain(struct sun50i_iommu *iommu, iommu->domain = NULL; } -static void sun50i_iommu_detach_device(struct iommu_domain *domain, - struct device *dev) +static int sun50i_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { - struct sun50i_iommu_domain *sun50i_domain = to_sun50i_domain(domain); struct sun50i_iommu *iommu = dev_iommu_priv_get(dev); + struct sun50i_iommu_domain *sun50i_domain; dev_dbg(dev, "Detaching from IOMMU domain\n"); - if (iommu->domain != domain) - return; + if (iommu->domain == identity_domain) + return 0; + sun50i_domain = to_sun50i_domain(iommu->domain); if (refcount_dec_and_test(&sun50i_domain->refcnt)) sun50i_iommu_detach_domain(iommu, sun50i_domain); + return 0; } +static struct iommu_domain_ops sun50i_iommu_identity_ops = { + .attach_dev = sun50i_iommu_identity_attach, +}; + +static struct iommu_domain sun50i_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &sun50i_iommu_identity_ops, +}; + static int sun50i_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { @@ -789,8 +800,7 @@ static int sun50i_iommu_attach_device(struct iommu_domain *domain, if (iommu->domain == domain) return 0; - if (iommu->domain) - sun50i_iommu_detach_device(iommu->domain, dev); + sun50i_iommu_identity_attach(&sun50i_iommu_identity_domain, dev); sun50i_iommu_attach_domain(iommu, sun50i_domain); @@ -827,6 +837,7 @@ static int sun50i_iommu_of_xlate(struct device *dev, } static const struct iommu_ops sun50i_iommu_ops = { + .identity_domain = &sun50i_iommu_identity_domain, .pgsize_bitmap = SZ_4K, .device_group = sun50i_iommu_device_group, .domain_alloc = sun50i_iommu_domain_alloc, @@ -985,6 +996,7 @@ static int sun50i_iommu_probe(struct platform_device *pdev) if (!iommu) return -ENOMEM; spin_lock_init(&iommu->iommu_lock); + iommu->domain = &sun50i_iommu_identity_domain; platform_set_drvdata(pdev, iommu); iommu->dev = &pdev->dev;