From patchwork Mon Jul 24 17:21:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325098 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DDA70C001B0 for ; Mon, 24 Jul 2023 17:23:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=vDluT46x+zXNddSWPORIIRIHHLjHcmJkqURv+cv/jF8=; b=NYX0dZbYBbRf9mbc1q2/vPZjeW 06rNdiJVX9AbWQ70cB8igtjBihqjw4EvXR5m3DFkOnEOXiIX4zMQsg2OxsQBbK1Wjkt/SFep1SLyS aNERPiyEi5TtWuyc/qQlKWwPxIIDC2TR17+AWzqNchOS7ppmNnswyxsaj6TeoO6u28IHIvPky+9eH X/wc1mCBa8PPGDkUYhQp8YORbT4XieoG+Z7XlyX0P46AZ46JWUD+TTC4OyFZQK4UtIH9koRjD1BFR tweg0521CmE3Gwg+uYhylGwjX3pI/4GO/tUOXYQcxatUzkwIitbnlvnJUymSbu19tPCahvTNbJFf4 0U/eSvUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHS-0050wi-2a; Mon, 24 Jul 2023 17:23:34 +0000 Received: from mail-mw2nam10on2062e.outbound.protection.outlook.com ([2a01:111:f400:7e89::62e] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGT-00502A-0H; Mon, 24 Jul 2023 17:22:35 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=jhQG6RiZEal+OjfnnbPwFr3jQ03JuY6/i1BTsGFaI5pxg+KSahwr4PZ7KIokkAGboFn4gfVB5mniygu+596YPMysrCQqkpluFL2KehGl2LrAtATJET+Shq5DJhMnlvDm/l3OG/O5cLIwwMtXyNWvU6rttOywWG8mgD2QHfS2ufoWFXd/cUIDOk1yiGHJkb4H5Hciun6/5R/wNYJcFgzKtJc2Dhn+mIIaQiiiU4dHx19epNCBOV2QfYzrgQ3waWoCpxRe7M7RQ+bLKrhZnIIHjPPuJkVawT+5+voI1JaZZ6AKwBTEf83BZ3P+OU1cdg1OhqViKHS+aAPraMNwVCw1/A== 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=vDluT46x+zXNddSWPORIIRIHHLjHcmJkqURv+cv/jF8=; b=Qw2Ju8oPvKqZrUUJZzwFWBV56norpFxgiyCuzgdzNFV41OPzurLIGRaYZV3rAX62OqkLTh9teCxX/7nX+5Yw0uZyiEDppBw1pqCBzY18hUu8pK8Tw3ifshsie6FNzEUxL8inkx7eH+zGznigsGRI/NLOS7wNc0jVSPcQM/MCEqsJtQnyY327FVkSZOOG/uWtC6uw7V8FGmQeyynAj0zIK4XY2KL/rRNfQdEfx1KBZuAIYY0W4w3wRfLPDEoAyAkpyRBxqak4JC3VF4pOHMuV3OWKN/rd0gbB3UPRCQSzSvI8LyKntU5MvVTeNFqNUowZtlexniRE2paBM/sScBAabA== 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=vDluT46x+zXNddSWPORIIRIHHLjHcmJkqURv+cv/jF8=; b=F/r2ApWylgRDmT5nTIpxxuwbuIIV6VS11vKD84aXfFr1fdR82rkrtkz8dAJC+RFI+SnfWfV1GvtoXjpMjWBIU4ffkfIbPYmA63OnJFQJAz++rlv7BTpOF/E3KJ8HEaP2XsJ0lJ4GYp97IqtRhwJ9cqQB3brGkONZiPRshlxA50e1t8BFycX+f2fmacBkkJ+o5b730ZiX3df6Uw8TS0SSeyLOljVXyqYa2DlhgNvjspU9NESaai8t+e6Z/Dd/CKfk+Mo05WCZUKGWX6MfiSgh1wnPSPYQ+o5YMNKmKY6CD36IYRZdx+z8rPpveYhiWuSl0cu/ptzSqQPLgRVtChVqwA== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:17 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:17 +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 v5 01/25] iommu: Add iommu_ops->identity_domain Date: Mon, 24 Jul 2023 14:21:51 -0300 Message-ID: <1-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0021.namprd03.prod.outlook.com (2603:10b6:208:2d::34) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: cd805c52-bd10-4797-f54d-08db8c6a875f 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);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: cd805c52-bd10-4797-f54d-08db8c6a875f X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.0394 (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: 3CYBFExc66C8/4hy2QJ51BPmy5kBgtCPX1GjYdjzhfcwdkyEAHujoON8LT/Kibgm X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102233_153283_E98AE01B X-CRM114-Status: GOOD ( 17.24 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This allows a driver to set a global static to an IDENTITY domain and the core code will automatically use it whenever an IDENTITY domain is requested. By making it always available it means the IDENTITY can be used in error handling paths to force the iommu driver into a known state. Devices implementing global static identity domains should avoid failing their attach_dev ops. Convert rockchip to use the new mechanism. Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 3 +++ drivers/iommu/rockchip-iommu.c | 9 +-------- include/linux/iommu.h | 3 +++ 3 files changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 4352a149a935e8..5e3cdc9f3a9e78 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1931,6 +1931,9 @@ static struct iommu_domain *__iommu_domain_alloc(const struct bus_type *bus, if (bus == NULL || bus->iommu_ops == NULL) return NULL; + if (alloc_type == IOMMU_DOMAIN_IDENTITY && bus->iommu_ops->identity_domain) + return bus->iommu_ops->identity_domain; + domain = bus->iommu_ops->domain_alloc(alloc_type); if (!domain) return NULL; diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 8ff69fbf9f65db..033678f2f8b3ab 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -989,13 +989,8 @@ static int rk_iommu_identity_attach(struct iommu_domain *identity_domain, return 0; } -static void rk_iommu_identity_free(struct iommu_domain *domain) -{ -} - static struct iommu_domain_ops rk_identity_ops = { .attach_dev = rk_iommu_identity_attach, - .free = rk_iommu_identity_free, }; static struct iommu_domain rk_identity_domain = { @@ -1059,9 +1054,6 @@ static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) { struct rk_iommu_domain *rk_domain; - if (type == IOMMU_DOMAIN_IDENTITY) - return &rk_identity_domain; - if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) return NULL; @@ -1186,6 +1178,7 @@ static int rk_iommu_of_xlate(struct device *dev, } static const struct iommu_ops rk_iommu_ops = { + .identity_domain = &rk_identity_domain, .domain_alloc = rk_iommu_domain_alloc, .probe_device = rk_iommu_probe_device, .release_device = rk_iommu_release_device, diff --git a/include/linux/iommu.h b/include/linux/iommu.h index b1dcb1b9b17040..e05c93b6c37fba 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -254,6 +254,8 @@ struct iommu_iotlb_gather { * will be blocked by the hardware. * @pgsize_bitmap: bitmap of all possible supported page sizes * @owner: Driver module providing these ops + * @identity_domain: An always available, always attachable identity + * translation. */ struct iommu_ops { bool (*capable)(struct device *dev, enum iommu_cap); @@ -287,6 +289,7 @@ struct iommu_ops { const struct iommu_domain_ops *default_domain_ops; unsigned long pgsize_bitmap; struct module *owner; + struct iommu_domain *identity_domain; }; /** From patchwork Mon Jul 24 17:21:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325228 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 2AF09C41513 for ; Mon, 24 Jul 2023 18:30:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ERLee1ZWMOQB/9cYetsh1Svvjjbt+zObeX7Q0tU7fU0=; b=yPRP7534HWIH/mL4PTVUE/DesG P01uJNNdtaouUygCHheleyU+6/Ku3SdUZ7ccz8Q7v8h5Qt4jvLQNDSnT+UO+qzPV9KgvyDxx3GouG 08RKtklVOKN1Vpu/W3ZxFcSgJXqA+J/b2VSszPVQGKwi07Z713pPyjibKIFSRfne8KM455UD7BtDz v9aJK4vwyDSjc/4YS2zxPmTZruoklTcYI3jn3hzuU2tdE2nDN4lQDZo0urXCutda8Sn7+eBZlFcBx D4DdD8OTuSdzXdkK1jZj5GtWcooyLtUaioSC2pA6HJIuY276meMUssddWMatc5VJ5wRBU9diWhk66 e7G/SESg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qO0K4-005CX5-2r; Mon, 24 Jul 2023 18:30:20 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGQ-00500M-3C; Mon, 24 Jul 2023 17:22:32 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FShXW3Wj2lPC1lW72g/h4z2tsVFbdwwoMDmfhJgwjNVnTaMyv5MXK4SGD/f9Wm/hSgp8xYsA9FSZejk7qq3Y907W2/7bhUOqDU4IZMsaOx0DY/ZD8uqNzfcA0Oo6oy23w1VazQUyQrBukzVqfohx+qsof4Yi9x4JeQT5noYAYN4K1O6IjER0Z0ykajSqwzmbJjAimqT7NNrqU0+HYzOB+H7NBwC9KXaHqJHPMXX0KlQEsDokZN4pTy8u5W2XJRwc8ooU6WOtMbs3ErNUKXN2BimYsGwrwDkxnijSQraysyHY4+aGQTE28xbBwrBqONDlZmZbqTjRBBGSQo+lUqKoDw== 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=ERLee1ZWMOQB/9cYetsh1Svvjjbt+zObeX7Q0tU7fU0=; b=RrTTTGtfe+QJoNbo4DtYjOUWHesJyfm0oHlo7QZRBr0l6NT90AZ/taLqWCJp8fOr6hSvD/iXKljI5hnVRGBUfU1bb3vXYdiYavE3dqZbTCxfWj6/YrfXItGnknMka7YiQ5o7pBWipL1wAkxp6vXiYnNmJSqzOXt7mP85MZe6Nw1JfNABgm7jZnB06PVQkuIIVICPpLJaUVMBbysJp1slYMJZmHQk51NGrsZwsKXehfT6aXRxVCpIjJgrtQDaxImB+c+ZcLBcgySpiG3PDVBT/cfehsPhnqWcI8uNecgA1nQ2VO46mO3ccz8PKA3C2r1qzMnjIFLGsHLbqYR/QFCxNw== 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=ERLee1ZWMOQB/9cYetsh1Svvjjbt+zObeX7Q0tU7fU0=; b=iKsPyPL8u2WjZBBiXDJ1swB6TzKAb1MzY17njaL9aepdbtmxv50e0DRDMxh7sJBOhqSySGJxLgXqOJ0X1hL5re++UrfvIY1ZqJdHqBh0zz1YINkqtlxaJeBsln0gAmMlJTbMIIXnnCF/X2luZ9cDAPY3PH5gA6YaT0U/mknSsdmLFNgmUOIF7bXhgR3IzdZ232X1TmlWFcyu2ScViFUAyJH+vI12xNG/Ix80KPlYpSxVoEGdTANaUf45oTAAsWg/aOBuL27rjdjKlgMqbiDpEUVMcK3i3N6N2u9HpXf37ExsSE6np9NQzZEO6UPRfQkMpgqjyLm1SvqStAzeAzRa2Q== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:24 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:24 +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 v5 02/25] iommu: Add IOMMU_DOMAIN_PLATFORM Date: Mon, 24 Jul 2023 14:21:52 -0300 Message-ID: <2-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0023.namprd22.prod.outlook.com (2603:10b6:208:238::28) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: da5be102-91cd-45ec-f58c-08db8c6a882c 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005)(4216001);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: da5be102-91cd-45ec-f58c-08db8c6a882c X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.5756 (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: UEIITfW0ifH49cK+0wel+eQhdbmaCrzyp7hi/grYZPVMVJxSeuioIyzVR3aNAHBG X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102231_036404_04F3568E X-CRM114-Status: GOOD ( 16.18 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This is used when the iommu driver is taking control of the dma_ops, currently only on S390 and power spapr. It is designed to preserve the original ops->detach_dev() semantic that these S390 was built around. Provide an opaque domain type and a 'default_domain' ops value that allows the driver to trivially force any single domain as the default domain. Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 14 +++++++++++++- include/linux/iommu.h | 6 ++++++ 2 files changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 5e3cdc9f3a9e78..c64365169b678d 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1705,6 +1705,17 @@ iommu_group_alloc_default_domain(struct iommu_group *group, int req_type) lockdep_assert_held(&group->mutex); + /* + * Allow legacy drivers to specify the domain that will be the default + * domain. This should always be either an IDENTITY or PLATFORM domain. + * Do not use in new drivers. + */ + if (bus->iommu_ops->default_domain) { + if (req_type) + return ERR_PTR(-EINVAL); + return bus->iommu_ops->default_domain; + } + if (req_type) return __iommu_group_alloc_default_domain(bus, group, req_type); @@ -1967,7 +1978,8 @@ void iommu_domain_free(struct iommu_domain *domain) if (domain->type == IOMMU_DOMAIN_SVA) mmdrop(domain->mm); iommu_put_dma_cookie(domain); - domain->ops->free(domain); + if (domain->ops->free) + domain->ops->free(domain); } EXPORT_SYMBOL_GPL(iommu_domain_free); diff --git a/include/linux/iommu.h b/include/linux/iommu.h index e05c93b6c37fba..87aebba474e093 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -64,6 +64,7 @@ struct iommu_domain_geometry { #define __IOMMU_DOMAIN_DMA_FQ (1U << 3) /* DMA-API uses flush queue */ #define __IOMMU_DOMAIN_SVA (1U << 4) /* Shared process address space */ +#define __IOMMU_DOMAIN_PLATFORM (1U << 5) #define IOMMU_DOMAIN_ALLOC_FLAGS ~__IOMMU_DOMAIN_DMA_FQ /* @@ -81,6 +82,8 @@ struct iommu_domain_geometry { * invalidation. * IOMMU_DOMAIN_SVA - DMA addresses are shared process addresses * represented by mm_struct's. + * IOMMU_DOMAIN_PLATFORM - Legacy domain for drivers that do their own + * dma_api stuff. Do not use in new drivers. */ #define IOMMU_DOMAIN_BLOCKED (0U) #define IOMMU_DOMAIN_IDENTITY (__IOMMU_DOMAIN_PT) @@ -91,6 +94,7 @@ struct iommu_domain_geometry { __IOMMU_DOMAIN_DMA_API | \ __IOMMU_DOMAIN_DMA_FQ) #define IOMMU_DOMAIN_SVA (__IOMMU_DOMAIN_SVA) +#define IOMMU_DOMAIN_PLATFORM (__IOMMU_DOMAIN_PLATFORM) struct iommu_domain { unsigned type; @@ -256,6 +260,7 @@ struct iommu_iotlb_gather { * @owner: Driver module providing these ops * @identity_domain: An always available, always attachable identity * translation. + * @default_domain: If not NULL this will always be set as the default domain. */ struct iommu_ops { bool (*capable)(struct device *dev, enum iommu_cap); @@ -290,6 +295,7 @@ struct iommu_ops { unsigned long pgsize_bitmap; struct module *owner; struct iommu_domain *identity_domain; + struct iommu_domain *default_domain; }; /** From patchwork Mon Jul 24 17:21:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325096 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 75A58C001DF for ; Mon, 24 Jul 2023 17:23:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=k/0gHl//8SqNFKrgnCU9P1aax7WPPBmGyHqK+vgxw6c=; b=Xupcqhyb76QD3O6ED/OkhD4VBH Zisx+FoHuFKz/aXXyfvuoDU/Uj5xjbYNX9iGfeeOYPmMCMXK4d0j5U4KJph9Enbyu6HfaUExEbz64 69uLdbQwC9FKxwlAWNmU/l+BaAKxYat3KZlcq/nHHMkyEnnthTspdNv+s3aWzmkZmGy+mPD2sBzzU nEJPKd2x/910RVlq5fDM2XdLeZ8wHisAieocQo49R6zBGtdz/0+SAmAbFo1oVY5Jy6e3s7I/g8DZ8 zc/+w/Ybd5NvJzoWEDL2YaAftUwJOjiTE28MR4vTJga20cLZA/pQsZST1nbt4TT0CLPm2TcrY50NA qAAlQqcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGt-0050VL-0P; Mon, 24 Jul 2023 17:22:59 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGQ-004zzV-1B; Mon, 24 Jul 2023 17:22:31 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ogszGr6PLX8ycAmBaPjpubqmimd45oSwjWIg5CCr9lEKOYl1oT41MfF7n/AaxfVEmrjFoG4y0mRn6NTb6AEPrpbxARehK78r2oeiy8b963JqPFPYcScuTDovyU2CHbEfeZ7giKFAx5jebmrCEfnyWkv3Uw9e4PBrc0rwCxEFHov5CgJ2/ugCDDRKBRKfxZE/KImG+myl251kFvP0w7KFELqPFiWWMmV+viFzlKeOMD6yA8b8Oi9UIY6+XQ2gOpTdcjWC2FYY9EWhRuHggt+fAUlEHAX60EIhV7oEzeRESjrLcE0/JlCLK99AxvrM9Z5iGcaR4TRO4HV+9C2P1rUZfA== 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=k/0gHl//8SqNFKrgnCU9P1aax7WPPBmGyHqK+vgxw6c=; b=dOo0v4GnsSlUR6u/Qhl5xkGqk00EGEHQ+UcyVcM9azKGFHVWcdhNE0bR657JMI15ieBJ8/p0VyxCp9RaUAg/TmgQ4GGPy7zzwUKlDyXc2/f5wtlqdYeKtPB76XEcG1k3M6ceCE5WhxrZdDb08/zYnoo+27rq6pTzV8qwTXaA6wIoIpGvqisiDmy1iyzaQN91AZi7IuiaZJ5oMDbtjgacHlZq+GSJbmkEptk+y6ONb1QBmFzMBemtf+Wm3E977Ag9uAOiL056twH/SI+vjUGNc5x/QonWb4/nQEwmIdIHK16WzUqRlIcwc4L422GOAfsj0XU93tJ6IkEQ8ntjvUYO7w== 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=k/0gHl//8SqNFKrgnCU9P1aax7WPPBmGyHqK+vgxw6c=; b=iKvQpyqXMuPR7tGPUvcjvEKdWpIf450LQV91jG9zkWaMTR7zMWc9CLpLEHZ7K0CBPJ7X8XPQayubsOxi1ZDFrVe9Guz7nYWOLen0/xSt3i5rWsNL1ptNY31XdiZSbtGbPjbhsg+3yWkWml+JoBh1E45kEAYBzzmstIpho7iNj70rPO72PlaASe+dWP29UhY/YUMeDbgWSRz4MkxkBbFTMK7StkIH4PoH0V+N1psW/XN47dsGxpQyQ2T6ytUbS2HG6t7eRQ8DVI75w/xpRX/VFbd2Rb9OeH45ydCgjq9bYF+UzZpdfoITvd4YXHrX8m3sTzzjL2Q9/0PzJHq9c9yBIQ== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:19 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:19 +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 v5 03/25] powerpc/iommu: Setup a default domain and remove set_platform_dma_ops Date: Mon, 24 Jul 2023 14:21:53 -0300 Message-ID: <3-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0005.namprd22.prod.outlook.com (2603:10b6:208:238::10) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: d02e0ffb-4e16-4a47-7b4b-08db8c6a8788 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);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: d02e0ffb-4e16-4a47-7b4b-08db8c6a8788 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.2459 (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: i0NjpVT3oBAUVYxfmIsKwTyd+NWFC+KEaJWTSmCdTRukH+TO7YrV05VoPnxXScur X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102230_426776_AB211D3F X-CRM114-Status: GOOD ( 14.67 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org POWER is using the set_platform_dma_ops() callback to hook up its private dma_ops, but this is buired under some indirection and is weirdly happening for a BLOCKED domain as well. For better documentation create a PLATFORM domain to manage the dma_ops, since that is what it is for, and make the BLOCKED domain an alias for it. BLOCKED is required for VFIO. Also removes the leaky allocation of the BLOCKED domain by using a global static. Signed-off-by: Jason Gunthorpe --- arch/powerpc/kernel/iommu.c | 38 +++++++++++++++++-------------------- 1 file changed, 17 insertions(+), 21 deletions(-) diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index c52449ae6936ad..ffe8d1411a9d56 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -1269,7 +1269,7 @@ struct iommu_table_group_ops spapr_tce_table_group_ops = { /* * A simple iommu_ops to allow less cruft in generic VFIO code. */ -static int spapr_tce_blocking_iommu_attach_dev(struct iommu_domain *dom, +static int spapr_tce_platform_iommu_attach_dev(struct iommu_domain *dom, struct device *dev) { struct iommu_group *grp = iommu_group_get(dev); @@ -1286,17 +1286,22 @@ static int spapr_tce_blocking_iommu_attach_dev(struct iommu_domain *dom, return ret; } -static void spapr_tce_blocking_iommu_set_platform_dma(struct device *dev) -{ - struct iommu_group *grp = iommu_group_get(dev); - struct iommu_table_group *table_group; +static const struct iommu_domain_ops spapr_tce_platform_domain_ops = { + .attach_dev = spapr_tce_platform_iommu_attach_dev, +}; - table_group = iommu_group_get_iommudata(grp); - table_group->ops->release_ownership(table_group); -} +static struct iommu_domain spapr_tce_platform_domain = { + .type = IOMMU_DOMAIN_PLATFORM, + .ops = &spapr_tce_platform_domain_ops, +}; -static const struct iommu_domain_ops spapr_tce_blocking_domain_ops = { - .attach_dev = spapr_tce_blocking_iommu_attach_dev, +static struct iommu_domain spapr_tce_blocked_domain = { + .type = IOMMU_DOMAIN_BLOCKED, + /* + * FIXME: SPAPR mixes blocked and platform behaviors, the blocked domain + * also sets the dma_api ops + */ + .ops = &spapr_tce_platform_domain_ops, }; static bool spapr_tce_iommu_capable(struct device *dev, enum iommu_cap cap) @@ -1313,18 +1318,9 @@ static bool spapr_tce_iommu_capable(struct device *dev, enum iommu_cap cap) static struct iommu_domain *spapr_tce_iommu_domain_alloc(unsigned int type) { - struct iommu_domain *dom; - if (type != IOMMU_DOMAIN_BLOCKED) return NULL; - - dom = kzalloc(sizeof(*dom), GFP_KERNEL); - if (!dom) - return NULL; - - dom->ops = &spapr_tce_blocking_domain_ops; - - return dom; + return &spapr_tce_blocked_domain; } static struct iommu_device *spapr_tce_iommu_probe_device(struct device *dev) @@ -1360,12 +1356,12 @@ static struct iommu_group *spapr_tce_iommu_device_group(struct device *dev) } static const struct iommu_ops spapr_tce_iommu_ops = { + .default_domain = &spapr_tce_platform_domain, .capable = spapr_tce_iommu_capable, .domain_alloc = spapr_tce_iommu_domain_alloc, .probe_device = spapr_tce_iommu_probe_device, .release_device = spapr_tce_iommu_release_device, .device_group = spapr_tce_iommu_device_group, - .set_platform_dma_ops = spapr_tce_blocking_iommu_set_platform_dma, }; static struct attribute *spapr_tce_iommu_attrs[] = { From patchwork Mon Jul 24 17:21:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325093 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 075E5C001DF for ; Mon, 24 Jul 2023 17:22:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2iHXF79ZsLNr+U25wG96PT5wqn685MqH0c6RI6HOHFE=; b=D6SjfqOM/6FQJLIjcAkbFdHVux 5n9/U6PYsO0lIo8jZd5qvICk08TW/kHseIw2WQ6cBq2qYFTRRnzrLgGph7g28pWdUxooHPXSoWwat qfUyamX+/yCHBl6AW0zG9Il+dj4wLeFtusnvUb2iKxWnzOZ8YrK+GdS3Ge+PBlVIt7gd7jVvCmeT2 rm95uqY0RHFBmUMjumbaAa2poRs7h3Ru+MQ8xDZdkqanMHb3Ur0EvUY3T26bfygWx+u2cAjsll1so bj05uT2vvtNn9UmfCdM+usfA2UVqGMUjfon8P6fX8Qsxs/bYEhJpqliBbhIA4oJgcyuzrDfDtM6Zy Dw7/bNug==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGP-00501t-24; Mon, 24 Jul 2023 17:22:29 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGM-004zzV-2x; Mon, 24 Jul 2023 17:22:28 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Vai1kMnFdYv6xMQz9nXv7R2rk/xqirQUT05/P2ykE3Sdbdf4hVEUQXyVhFUcLyUm3ORpI5Czu4Ivobk8Ef6XlOgbYvRUYYRfbB7fgMYIfAI+0XQrQKfWLlQXxDWWLn6aeQi0iJMzjUa9ezePL/PWMPefXIcnzNmaijU+0chNpsq6r04eNkSDnSnjZbeXllPG5XV1VR6nytwUguQ09Wyo7uofoPyoqxdsM+3JVnkbvXTsB+U/zEFDyBk5MCDts3i4p51jlE5iSOAe/IB6m9Wk26Hp27D4zC+uSFNFPA/6sux/j5L476WiVlvuUpGAIT16RjpvGyBAhYTu/2GNHtjFMg== 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=2iHXF79ZsLNr+U25wG96PT5wqn685MqH0c6RI6HOHFE=; b=D5RTRFLhU89kCKNlqQHjU7LJ1PsC53zT5W/GNb66cE9NRmhfUwAAe+VG6nhBIxWoLVEE4THFfVw3Tx4bc+FMgghp7sc0x9wlj71olq5zGem7R1pCc09Tis8NLFa7b1G8JQZrftW7fZN228HLq/YhDSei9hdxetF2QD5MpC24iES/Ej3bFbYA7pqmjEbP+Q9fm95Vffw9xg6gDOgcuv9E/glW/Vtt8LDv+zp0c7n+QyXucBKdIpMsBzsWr9L6JrMMz231hODEopDuS8PIwV9VykqrVq8aKg5unxEV/1K3DSHcoQs0WJu1mDWwyvU07x0J2J/seSd9xzx6uAEk6dfRtw== 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=2iHXF79ZsLNr+U25wG96PT5wqn685MqH0c6RI6HOHFE=; b=KTFJG2W+zf56/kGEnotugblu7UBDNUfl3tlDYImw1x44Zs747A+Gz1nOGax1Qr0iJNACGKoDh9tkRvTbvlz6IRRMFAHsOIxyLWZ2laukOn3KSCN/sRL/ghV0H0spdtMRUNs874sVyndpjKZ6fG37fI7k4I19MHmpws7Cm7CqSdAnJ2CYEDJb8BXRgB1SQgTr1tw6BvVTRMyVpk+0/wRPtcRDqKUt4DoWHzaEuigGQ0chy08LnBR3wYMzir+id3tzXsGxB+afsvADh1Q9ro3DV8Ro9ek1953lepl/K5t2+1uyqhun2fel1K2Gz8/e1EMEW2xGf7FsnDSLEkkrHDqm3A== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:17 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:17 +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 v5 04/25] iommu: Add IOMMU_DOMAIN_PLATFORM for S390 Date: Mon, 24 Jul 2023 14:21:54 -0300 Message-ID: <4-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0020.namprd03.prod.outlook.com (2603:10b6:208:2d::33) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: cab6f812-c85a-4773-0a0f-08db8c6a8754 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: NuHWr8/e21IxXtEdt93RtGavNW6AofNutPCjsvXfyiXbzLgoe7HcdJzZ12DhDHRSeC4TqhcZg1hHXMXWurhkhqLkYiTIuKMz1tTttQjEu/rHR+U82Yw+Q+/D8crAUSrsVjl6I6v9tvwOOCpvs3lJzKLTRONR9KKT66yibpJioJD2CR6ucqR0EffGuZStPlNVPu/ynK7VQhrrlUxxiD0MrxPXY94dbi12NNMSEkLhQE6Rg3fltecmjCGDqi3aWX3sZZTCaDDlrTs2ZpcLa50hYMTTkvKZ8HzL/b4dVjFdiEseATwLlV4sBojOOUruYsUo8DLAWtMO8qjs8CIASVi6I4CP2GPGxnY6LAB77Iv0UlB+Gi3x/KMf73hrjA4tAWvn0+Iyyq4N4PcN/UIhc1P8GfNoiBmASsYKUW9lXxquiAY7jN/lXgWox5HWBddIoTi54Uz9hi01LiMR9+vWH26mIK9S1Eud4fxxWFnBTEuforDDqRwDcqMCnyWuQA1TCulV5/c8UJGSGHuq6ESOt7FEGogZzARjXurWa5LEvf6Lmvr3LSkP3fi9noO1eaGNCc5OVNMV/d+A4YNCX6xtAVE0eygPT8+pTXLo2WnRxVoMCPw8eqgQbAjoKfy91R8LH479DJ4Ro9bX1r7Tj0gOvCWq2F7zssObqjHCFmRDgmOYI+/+Q6jUKSDyXNm8aJbGoZx4f0Rwn7g1UbJHyd5fft2ICkbKQSsXCQaWVh/P5lZpMuc3xlFbggqhpYaJrQIEpVgVbkNs0vFlAY4exl8Y8FcmVM9D7IfZ6w/Ti2JsBDD6ZXUtDjGoL66b67uFXXDyUKYH134OwJEZYmvCW4vRUVW5lh5GHg4AJ+RWouVmq8w7ZqIZVjeqFnm+MKIZ365CP3qO25HzHHbZaye+V1Dv3RsmSrDJNM4mjGEd4J/PC8yjwGESYT3wBLF9yE8i3LuBAym2/vTheWAKvC/XjlXVBGvDdjKXRiq5miPJ1nx7MQmPQ21i8nr19T9lT3BnTKwGNbVF6fERqjcjans1V4d/3IXghfJcKUZpddd0DYgAzwxl5O4u+g6X2tXZ4OInkzMNuiiMjMxi01oOaIby1fuUo0pQS3LK1aJURh9UgfjmFdC64spTlQ/oBAwb8IgHMClRlyxsEXRQrGsTwRKfb2M35pf0oGkOUJBq36BjYkVarY8orOoNxf2uLrqkLj/0vaRTJVoQ0jZGLwWCUR8MX89cpOv6z4sRuSo6EMl9fbkLngQHaXBlDMecIrF3f0vVtVouef2OrO6iS9xTpS02EQWiFW6a58uUb3OyH7EffCS16RWwIU2qCb7i1oxSavucfRbL6k8JMQOgQZgpvVXuHIYNHC73BH8WJOVlSinFkpUia7OqQpXsAmVNaLt+PqLWWTb7t2aNGvFtZqC6JmGXGLDl1PS/zXY2brpXSuwIlGPSbDBlAxdvwd+2otjVazshlF419cTrVr5V1zFRYBkw4kh7Zpw1i7XUzguT4XLokPP304ua4zj+nz1ev+kD+aTEvNSSxSA/agPPJVpzEqrnu618ZGsSuLc/1qQ0yR85YDvCn+kPrWu0mhHYUMBxrYdpQY6HcKxF X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: cab6f812-c85a-4773-0a0f-08db8c6a8754 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.0056 (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: HlaSZ9q2yFnsXl/M07JVJuTywqICGBNLO40bbKXCGHkhPx0CKslkpBQ6MjvORs7n X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102226_960940_42AEBB78 X-CRM114-Status: GOOD ( 14.19 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The PLATFORM domain will be set as the default domain and attached as normal during probe. The driver will ignore the initial attach from a NULL domain to the PLATFORM domain. After this, the PLATFORM domain's attach_dev will be called whenever we detach from an UNMANAGED domain (eg for VFIO). This is the same time the original design would have called op->detach_dev(). This is temporary until the S390 dma-iommu.c conversion is merged. Tested-by: Heiko Stuebner Tested-by: Niklas Schnelle Signed-off-by: Jason Gunthorpe --- drivers/iommu/s390-iommu.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index fbf59a8db29b11..f0c867c57a5b9b 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -142,14 +142,31 @@ static int s390_iommu_attach_device(struct iommu_domain *domain, return 0; } -static void s390_iommu_set_platform_dma(struct device *dev) +/* + * Switch control over the IOMMU to S390's internal dma_api ops + */ +static int s390_iommu_platform_attach(struct iommu_domain *platform_domain, + struct device *dev) { struct zpci_dev *zdev = to_zpci_dev(dev); + if (!zdev->s390_domain) + return 0; + __s390_iommu_detach_device(zdev); zpci_dma_init_device(zdev); + return 0; } +static struct iommu_domain_ops s390_iommu_platform_ops = { + .attach_dev = s390_iommu_platform_attach, +}; + +static struct iommu_domain s390_iommu_platform_domain = { + .type = IOMMU_DOMAIN_PLATFORM, + .ops = &s390_iommu_platform_ops, +}; + static void s390_iommu_get_resv_regions(struct device *dev, struct list_head *list) { @@ -428,12 +445,12 @@ void zpci_destroy_iommu(struct zpci_dev *zdev) } static const struct iommu_ops s390_iommu_ops = { + .default_domain = &s390_iommu_platform_domain, .capable = s390_iommu_capable, .domain_alloc = s390_domain_alloc, .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group, - .set_platform_dma_ops = s390_iommu_set_platform_dma, .pgsize_bitmap = SZ_4K, .get_resv_regions = s390_iommu_get_resv_regions, .default_domain_ops = &(const struct iommu_domain_ops) { From patchwork Mon Jul 24 17:21:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325109 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 92CF1C04A6A for ; Mon, 24 Jul 2023 17:24:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=n5SXREaZAfh1crklz/cC4OCLXkXky2FC9P9De7EhA9Y=; b=3PWBoMBQKHWP55KN/uGUCK4R+D nG+LM99o1HQdhOvz13wnsBZ69kpqsZME/PU9SmZsf2jcCvQXsokBGCThcXym1v+GERG3+QB+X54el mPYoTb3yu3PpDdJygSIf3oHSFSJdNFhjSojG6JNUfpFTWzSnxK19MzOs0jy1nrMKuqalJJU8vBrsh FGS62R6lyvDX76UmjK9t0HXOhhGx+SxZSjBqzJ0QNVC6FOYz2Re8H5hAx53JO8cfSJPgQm4ZeStZQ ymipVjgrZZoykEFdgjEdHc0mByt8oRgPU94nfDP2/dZ3jFlMZ+k7WJrb7slx7r+weFyUESXDeuhkr raA0rYMg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIb-0051u4-1r; Mon, 24 Jul 2023 17:24:45 +0000 Received: from mail-mw2nam04on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e8c::62c] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGa-00508i-2S; Mon, 24 Jul 2023 17:22:42 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=RhYs/8b96xyC+8uDyCe0ZqNEkMDRc9M0AoUZn9XKPt2Kg6jz3nU24dS+Jm5j7ct1/RACyN82vUsrpuDikzigwWb4b2gLT19YcVVDtB91QQleKZ5q5GHHekCP2Xqy6B3yKjPI8T7QqvBK0E8lXRdazU8qNjFoMfAkDXC5RMwDXViP/KQHyfm0JJlZe+XFbWjxROEqZX0N78KH0mLXMH8pBMSrwW6wXycY2z1mn78ZgEYIli2qNM9iWaq0JamVnJZbql8DPMEPlfAQP2wvIxNcfJomI75FQ7cKG6mASUAu0UdlbD2HMoJAsmXacUXRM6oYCPFy/+S6zJMg7X1170FvFw== 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=n5SXREaZAfh1crklz/cC4OCLXkXky2FC9P9De7EhA9Y=; b=aEPymStfVG1WOQ1PyAcyFkHffa5Urvymnk4O+NhdbGcStIcl7mYbydkR+SIxcMc6HVK3OoNa3DpfKs/ofZktceDn23sTayC9Eot/3+xvnXEq4MPK62fBzvM/jlj8G9re1mBVsv829Y7AwKZMbcmdnQgDe4wiA2TtOIEIMI9NRgaG4yvJyoifDIzkonwmozPh22KKG5BtHTxkIzuF9T1Ph5Z45MGI3nfL7sxumjdiI/sxjoQce3X6sA3jla3aTTnEGzibWqDvnXmLLwFNFKeBqpFxY+VVHDuDY7S9KFcgY2tw4yXC5KmYhVNC2kqSBM7tLR3DL+byD3CVO5bTUG+2zw== 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=n5SXREaZAfh1crklz/cC4OCLXkXky2FC9P9De7EhA9Y=; b=TSHVYNN5qxZK9w4WeYeLQu5fjGvY0rcsVjsqXSu/7p8OTpeYRP0XAB6UnPmlDF0t5swWHdB32YY6mPpHSOQqLRcwCBtlwdcfoCX4H7Uc5MdLY6cR0kE1B0jAFU9zh11aMR0+Y/ejql8vAnaWByV1+Q1OH/bjvUvETJRz16alRWZKV9QBgg44k2VfHVjtlUOeoLjvfxiRVFXW4BjqqB2NuWZRyddTAj1c7uf180K4kYHrLPvm2ok5Rj+enLruylVMkqpt/PsWqIriH/9IQLdWoawYC04/x46KjJ7XipOu05SnC8uDz0/J8DTp8vmRUUa8C20A7GGGRYlaeGYtKyLj4w== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:26 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:26 +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 v5 05/25] iommu/fsl_pamu: Implement a PLATFORM domain Date: Mon, 24 Jul 2023 14:21:55 -0300 Message-ID: <5-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0020.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::25) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 8172ae11-65ec-4618-a87a-08db8c6a88eb 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005)(4216001);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: 8172ae11-65ec-4618-a87a-08db8c6a88eb X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:19.6174 (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: bZoyZoZTmLEiFSLJZhWTrez+KBlqIVRiAIHD2cl2YYOqgDyq5zqDbKtNs9g/8bCO X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102240_836997_3379D4AC X-CRM114-Status: GOOD ( 18.67 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This driver is nonsensical. To not block migrating the core API away from NULL default_domains give it a hacky of a PLATFORM domain that keeps it working exactly as it always did. Leave some comments around to warn away any future people looking at this. Signed-off-by: Jason Gunthorpe --- drivers/iommu/fsl_pamu_domain.c | 41 ++++++++++++++++++++++++++++++--- 1 file changed, 38 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 4ac0e247ec2b51..e9d2bff4659b7c 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -196,6 +196,13 @@ static struct iommu_domain *fsl_pamu_domain_alloc(unsigned type) { struct fsl_dma_domain *dma_domain; + /* + * FIXME: This isn't creating an unmanaged domain since the + * default_domain_ops do not have any map/unmap function it doesn't meet + * the requirements for __IOMMU_DOMAIN_PAGING. The only purpose seems to + * allow drivers/soc/fsl/qbman/qman_portal.c to do + * fsl_pamu_configure_l1_stash() + */ if (type != IOMMU_DOMAIN_UNMANAGED) return NULL; @@ -283,15 +290,33 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain, return ret; } -static void fsl_pamu_set_platform_dma(struct device *dev) +/* + * FIXME: fsl/pamu is completely broken in terms of how it works with the iommu + * API. Immediately after probe the HW is left in an IDENTITY translation and + * the driver provides a non-working UNMANAGED domain that it can switch over + * to. However it cannot switch back to an IDENTITY translation, instead it + * switches to what looks like BLOCKING. + */ +static int fsl_pamu_platform_attach(struct iommu_domain *platform_domain, + struct device *dev) { struct iommu_domain *domain = iommu_get_domain_for_dev(dev); - struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); + struct fsl_dma_domain *dma_domain; const u32 *prop; int len; struct pci_dev *pdev = NULL; struct pci_controller *pci_ctl; + /* + * Hack to keep things working as they always have, only leaving an + * UNMANAGED domain makes it BLOCKING. + */ + if (domain == platform_domain || !domain || + domain->type != IOMMU_DOMAIN_UNMANAGED) + return 0; + + dma_domain = to_fsl_dma_domain(domain); + /* * Use LIODN of the PCI controller while detaching a * PCI device. @@ -312,8 +337,18 @@ static void fsl_pamu_set_platform_dma(struct device *dev) detach_device(dev, dma_domain); else pr_debug("missing fsl,liodn property at %pOF\n", dev->of_node); + return 0; } +static struct iommu_domain_ops fsl_pamu_platform_ops = { + .attach_dev = fsl_pamu_platform_attach, +}; + +static struct iommu_domain fsl_pamu_platform_domain = { + .type = IOMMU_DOMAIN_PLATFORM, + .ops = &fsl_pamu_platform_ops, +}; + /* Set the domain stash attribute */ int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu) { @@ -395,11 +430,11 @@ static struct iommu_device *fsl_pamu_probe_device(struct device *dev) } static const struct iommu_ops fsl_pamu_ops = { + .default_domain = &fsl_pamu_platform_domain, .capable = fsl_pamu_capable, .domain_alloc = fsl_pamu_domain_alloc, .probe_device = fsl_pamu_probe_device, .device_group = fsl_pamu_device_group, - .set_platform_dma_ops = fsl_pamu_set_platform_dma, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = fsl_pamu_attach_device, .iova_to_phys = fsl_pamu_iova_to_phys, From patchwork Mon Jul 24 17:21:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325097 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id EF0DEC00528 for ; Mon, 24 Jul 2023 17:23:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gHy+FLjmdhFTEOw6A6iVV5wE9YQwHt2f1Cn4G7HuhKY=; b=urqxgufEQGFAvxTPlH/AsD3knR 5rNrINxeDuN/o7pTQR34ayg2TypFqFjY2QfncNxE7Mp0tMM+3dUINoJggtKLehsMNJj4CmwL5+ii/ 66oINm4NhDPZvwDOOAkLACZhUFB/e/690iMgAhLJ+afYc2mRZNHQIF24yZrxpB+4lIvlc5oFnRboq BO7Q7/QiPHaze8eu8QXoJkLcSsgGgSzlNdPy6rP3aCEtlOpPfu0nDqydoH+nOenjh3dvxdHE3Bfie 7atZoxyrusVyS7o8KAnDl4a4y3SyavQAP9BPHH366Ywoo7OZV7WmfM2wTycH7mC6P0C1ap16NST68 6N80gAcQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHH-0050ot-2H; Mon, 24 Jul 2023 17:23:23 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGR-004zzV-37; Mon, 24 Jul 2023 17:22:34 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nAAsl59jJ2gi3NSzMTL5G4PxF2ntKFr6HVjKqu0j7A+Mse+xoeFPWX6rv7Gw8OjyUHz5L3tn+BcuzF720wo6q5N8X+BQDgqiMn3bh9u08hQ/Ff/rCciV99SJsQlOLrpT/V/TCFpBK9+DfFF8xwYpjCiSXQq0fe0tXlHx3TwGHprNzGa6ayQPvFJ0jNCKrI7P1fBcnNwVmsfO1N8kxYcTFHnTU/qEy9Q0H15gMdfgUy6efBlJCvUuhX5XAOfxsKYl3w77RXf/IyTsouR/oxDBZkMsbU9Kup1r+6s8qA5Hg2uC8J8zuBVrgQTSUS/eONsGKuYktNwVon/3ZsgWCfi0Ng== 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=gHy+FLjmdhFTEOw6A6iVV5wE9YQwHt2f1Cn4G7HuhKY=; b=PyHtAZ6cKcgTb7uyXJDr3gQv5+eFkf6H6hH2xLpnY2NVlTkd8Za6HqjpGL/mRoeQOde8TU48DgQ3jsF35TkCQxW1vJZhfzdSU+B8mQON7l1skQt0H9SajBd9bH/WmQNu9EfjgucvtJyMfrJ8iDUki2kfz4GM4ogILPKzsd251g8U8ypEF3DgaMe5tNnTLlsKIZ/dbT3fGf9KrZJhdoPLim5Tm3iooQckcnG1s7bFMfakyymwJlxLFkLTBwleTA7XRYKifiYWi5gmWA1dS7EbGUZzoNwpR3SLWc79DeVWQvYRA4Uu3WTcV6TKz2E3S9CesmHHrTQ6+DFwvKX4f5WHFg== 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=gHy+FLjmdhFTEOw6A6iVV5wE9YQwHt2f1Cn4G7HuhKY=; b=kmrUcFsv3iN1I+Ic5uR3buL1v5mABllITXz77ctYamhLWDb2geCxd50YBm+bKuv7qxBzKHqsgAh2X02RbpdYfm9OA7GpO9S+jSeOWf5IXS2T2ZDNGHz0qmElHv+dxvUpL+pKT89GeqNjVOLyQhe+SlEHjzSqng/z0J3UixDWJAVLPlt5DhqYH5oCd+dhR1eRaltQtYuscZH3fr5tfVLviEahng3qITS9LNLIAdplhE4DbCB39jCxYL34gAy33cdjFykk94rSXDq0X5nEaAXD/KlvNqTm7AxdhgW1EEgIeyOorslhpbrFxYQ+1pMVxEA71MWs05XnA93vroGGxK5B4g== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:19 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:19 +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 v5 06/25] iommu/tegra-gart: Remove tegra-gart Date: Mon, 24 Jul 2023 14:21:56 -0300 Message-ID: <6-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0008.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::13) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: b70c044c-47cb-426e-9018-08db8c6a877c 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(30864003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);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: b70c044c-47cb-426e-9018-08db8c6a877c X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.2616 (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: PSkYT5z3PB0eQxcYMfAK62XqMGGITd/wKLEisJpKN0SzP/2j4/sYWL8jtuKPZHx/ X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102232_045587_775A8AF1 X-CRM114-Status: GOOD ( 23.57 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Thierry says this is not used anymore, and doesn't think it makes sense as an iommu driver. The HW it supports is about 10 years old now and newer HW uses different IOMMU drivers. As this is the only driver with a GART approach, and it doesn't really meet the driver expectations from the IOMMU core, let's just remove it so we don't have to think about how to make it fit in. It has a number of identified problems: - The assignment of iommu_groups doesn't match the HW behavior - It claims to have an UNMANAGED domain but it is really an IDENTITY domain with a translation aperture. This is inconsistent with the core expectation for security sensitive operations - It doesn't implement a SW page table under struct iommu_domain so * It can't accept a map until the domain is attached * It forgets about all maps after the domain is detached * It doesn't clear the HW of maps once the domain is detached (made worse by having the wrong groups) Cc: Thierry Reding Cc: Dmitry Osipenko Acked-by: Thierry Reding Signed-off-by: Jason Gunthorpe --- arch/arm/configs/multi_v7_defconfig | 1 - arch/arm/configs/tegra_defconfig | 1 - drivers/iommu/Kconfig | 11 - drivers/iommu/Makefile | 1 - drivers/iommu/tegra-gart.c | 371 ---------------------------- drivers/memory/tegra/mc.c | 34 --- drivers/memory/tegra/tegra20.c | 28 --- include/soc/tegra/mc.h | 26 -- 8 files changed, 473 deletions(-) delete mode 100644 drivers/iommu/tegra-gart.c diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index f0800f806b5f62..c7e63e54a400e9 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -1063,7 +1063,6 @@ CONFIG_BCM2835_MBOX=y CONFIG_QCOM_APCS_IPC=y CONFIG_QCOM_IPCC=y CONFIG_ROCKCHIP_IOMMU=y -CONFIG_TEGRA_IOMMU_GART=y CONFIG_TEGRA_IOMMU_SMMU=y CONFIG_EXYNOS_IOMMU=y CONFIG_QCOM_IOMMU=y diff --git a/arch/arm/configs/tegra_defconfig b/arch/arm/configs/tegra_defconfig index 3c6af935e9328a..79141dddb037a9 100644 --- a/arch/arm/configs/tegra_defconfig +++ b/arch/arm/configs/tegra_defconfig @@ -292,7 +292,6 @@ CONFIG_CHROME_PLATFORMS=y CONFIG_CROS_EC=y CONFIG_CROS_EC_I2C=m CONFIG_CROS_EC_SPI=m -CONFIG_TEGRA_IOMMU_GART=y CONFIG_TEGRA_IOMMU_SMMU=y CONFIG_ARCH_TEGRA_2x_SOC=y CONFIG_ARCH_TEGRA_3x_SOC=y diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 2b12b583ef4b1e..cd6727898b1175 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -236,17 +236,6 @@ config SUN50I_IOMMU help Support for the IOMMU introduced in the Allwinner H6 SoCs. -config TEGRA_IOMMU_GART - bool "Tegra GART IOMMU Support" - depends on ARCH_TEGRA_2x_SOC - depends on TEGRA_MC - select IOMMU_API - help - Enables support for remapping discontiguous physical memory - shared with the operating system into contiguous I/O virtual - space through the GART (Graphics Address Relocation Table) - hardware included on Tegra SoCs. - config TEGRA_IOMMU_SMMU bool "NVIDIA Tegra SMMU Support" depends on ARCH_TEGRA diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 769e43d780ce89..95ad9dbfbda022 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -20,7 +20,6 @@ obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o obj-$(CONFIG_SUN50I_IOMMU) += sun50i-iommu.o -obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o obj-$(CONFIG_FSL_PAMU) += fsl_pamu.o fsl_pamu_domain.o diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c deleted file mode 100644 index a482ff838b5331..00000000000000 --- a/drivers/iommu/tegra-gart.c +++ /dev/null @@ -1,371 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * IOMMU API for Graphics Address Relocation Table on Tegra20 - * - * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved. - * - * Author: Hiroshi DOYU - */ - -#define dev_fmt(fmt) "gart: " fmt - -#include -#include -#include -#include -#include -#include -#include - -#include - -#define GART_REG_BASE 0x24 -#define GART_CONFIG (0x24 - GART_REG_BASE) -#define GART_ENTRY_ADDR (0x28 - GART_REG_BASE) -#define GART_ENTRY_DATA (0x2c - GART_REG_BASE) - -#define GART_ENTRY_PHYS_ADDR_VALID BIT(31) - -#define GART_PAGE_SHIFT 12 -#define GART_PAGE_SIZE (1 << GART_PAGE_SHIFT) -#define GART_PAGE_MASK GENMASK(30, GART_PAGE_SHIFT) - -/* bitmap of the page sizes currently supported */ -#define GART_IOMMU_PGSIZES (GART_PAGE_SIZE) - -struct gart_device { - void __iomem *regs; - u32 *savedata; - unsigned long iovmm_base; /* offset to vmm_area start */ - unsigned long iovmm_end; /* offset to vmm_area end */ - spinlock_t pte_lock; /* for pagetable */ - spinlock_t dom_lock; /* for active domain */ - unsigned int active_devices; /* number of active devices */ - struct iommu_domain *active_domain; /* current active domain */ - struct iommu_device iommu; /* IOMMU Core handle */ - struct device *dev; -}; - -static struct gart_device *gart_handle; /* unique for a system */ - -static bool gart_debug; - -/* - * Any interaction between any block on PPSB and a block on APB or AHB - * must have these read-back to ensure the APB/AHB bus transaction is - * complete before initiating activity on the PPSB block. - */ -#define FLUSH_GART_REGS(gart) readl_relaxed((gart)->regs + GART_CONFIG) - -#define for_each_gart_pte(gart, iova) \ - for (iova = gart->iovmm_base; \ - iova < gart->iovmm_end; \ - iova += GART_PAGE_SIZE) - -static inline void gart_set_pte(struct gart_device *gart, - unsigned long iova, unsigned long pte) -{ - writel_relaxed(iova, gart->regs + GART_ENTRY_ADDR); - writel_relaxed(pte, gart->regs + GART_ENTRY_DATA); -} - -static inline unsigned long gart_read_pte(struct gart_device *gart, - unsigned long iova) -{ - unsigned long pte; - - writel_relaxed(iova, gart->regs + GART_ENTRY_ADDR); - pte = readl_relaxed(gart->regs + GART_ENTRY_DATA); - - return pte; -} - -static void do_gart_setup(struct gart_device *gart, const u32 *data) -{ - unsigned long iova; - - for_each_gart_pte(gart, iova) - gart_set_pte(gart, iova, data ? *(data++) : 0); - - writel_relaxed(1, gart->regs + GART_CONFIG); - FLUSH_GART_REGS(gart); -} - -static inline bool gart_iova_range_invalid(struct gart_device *gart, - unsigned long iova, size_t bytes) -{ - return unlikely(iova < gart->iovmm_base || bytes != GART_PAGE_SIZE || - iova + bytes > gart->iovmm_end); -} - -static inline bool gart_pte_valid(struct gart_device *gart, unsigned long iova) -{ - return !!(gart_read_pte(gart, iova) & GART_ENTRY_PHYS_ADDR_VALID); -} - -static int gart_iommu_attach_dev(struct iommu_domain *domain, - struct device *dev) -{ - struct gart_device *gart = gart_handle; - int ret = 0; - - spin_lock(&gart->dom_lock); - - if (gart->active_domain && gart->active_domain != domain) { - ret = -EINVAL; - } else if (dev_iommu_priv_get(dev) != domain) { - dev_iommu_priv_set(dev, domain); - gart->active_domain = domain; - gart->active_devices++; - } - - spin_unlock(&gart->dom_lock); - - return ret; -} - -static void gart_iommu_set_platform_dma(struct device *dev) -{ - struct iommu_domain *domain = iommu_get_domain_for_dev(dev); - struct gart_device *gart = gart_handle; - - spin_lock(&gart->dom_lock); - - if (dev_iommu_priv_get(dev) == domain) { - dev_iommu_priv_set(dev, NULL); - - if (--gart->active_devices == 0) - gart->active_domain = NULL; - } - - spin_unlock(&gart->dom_lock); -} - -static struct iommu_domain *gart_iommu_domain_alloc(unsigned type) -{ - struct iommu_domain *domain; - - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - - domain = kzalloc(sizeof(*domain), GFP_KERNEL); - if (domain) { - domain->geometry.aperture_start = gart_handle->iovmm_base; - domain->geometry.aperture_end = gart_handle->iovmm_end - 1; - domain->geometry.force_aperture = true; - } - - return domain; -} - -static void gart_iommu_domain_free(struct iommu_domain *domain) -{ - WARN_ON(gart_handle->active_domain == domain); - kfree(domain); -} - -static inline int __gart_iommu_map(struct gart_device *gart, unsigned long iova, - unsigned long pa) -{ - if (unlikely(gart_debug && gart_pte_valid(gart, iova))) { - dev_err(gart->dev, "Page entry is in-use\n"); - return -EINVAL; - } - - gart_set_pte(gart, iova, GART_ENTRY_PHYS_ADDR_VALID | pa); - - return 0; -} - -static int gart_iommu_map(struct iommu_domain *domain, unsigned long iova, - phys_addr_t pa, size_t bytes, int prot, gfp_t gfp) -{ - struct gart_device *gart = gart_handle; - int ret; - - if (gart_iova_range_invalid(gart, iova, bytes)) - return -EINVAL; - - spin_lock(&gart->pte_lock); - ret = __gart_iommu_map(gart, iova, (unsigned long)pa); - spin_unlock(&gart->pte_lock); - - return ret; -} - -static inline int __gart_iommu_unmap(struct gart_device *gart, - unsigned long iova) -{ - if (unlikely(gart_debug && !gart_pte_valid(gart, iova))) { - dev_err(gart->dev, "Page entry is invalid\n"); - return -EINVAL; - } - - gart_set_pte(gart, iova, 0); - - return 0; -} - -static size_t gart_iommu_unmap(struct iommu_domain *domain, unsigned long iova, - size_t bytes, struct iommu_iotlb_gather *gather) -{ - struct gart_device *gart = gart_handle; - int err; - - if (gart_iova_range_invalid(gart, iova, bytes)) - return 0; - - spin_lock(&gart->pte_lock); - err = __gart_iommu_unmap(gart, iova); - spin_unlock(&gart->pte_lock); - - return err ? 0 : bytes; -} - -static phys_addr_t gart_iommu_iova_to_phys(struct iommu_domain *domain, - dma_addr_t iova) -{ - struct gart_device *gart = gart_handle; - unsigned long pte; - - if (gart_iova_range_invalid(gart, iova, GART_PAGE_SIZE)) - return -EINVAL; - - spin_lock(&gart->pte_lock); - pte = gart_read_pte(gart, iova); - spin_unlock(&gart->pte_lock); - - return pte & GART_PAGE_MASK; -} - -static struct iommu_device *gart_iommu_probe_device(struct device *dev) -{ - if (!dev_iommu_fwspec_get(dev)) - return ERR_PTR(-ENODEV); - - return &gart_handle->iommu; -} - -static int gart_iommu_of_xlate(struct device *dev, - struct of_phandle_args *args) -{ - return 0; -} - -static void gart_iommu_sync_map(struct iommu_domain *domain, unsigned long iova, - size_t size) -{ - FLUSH_GART_REGS(gart_handle); -} - -static void gart_iommu_sync(struct iommu_domain *domain, - struct iommu_iotlb_gather *gather) -{ - size_t length = gather->end - gather->start + 1; - - gart_iommu_sync_map(domain, gather->start, length); -} - -static const struct iommu_ops gart_iommu_ops = { - .domain_alloc = gart_iommu_domain_alloc, - .probe_device = gart_iommu_probe_device, - .device_group = generic_device_group, - .set_platform_dma_ops = gart_iommu_set_platform_dma, - .pgsize_bitmap = GART_IOMMU_PGSIZES, - .of_xlate = gart_iommu_of_xlate, - .default_domain_ops = &(const struct iommu_domain_ops) { - .attach_dev = gart_iommu_attach_dev, - .map = gart_iommu_map, - .unmap = gart_iommu_unmap, - .iova_to_phys = gart_iommu_iova_to_phys, - .iotlb_sync_map = gart_iommu_sync_map, - .iotlb_sync = gart_iommu_sync, - .free = gart_iommu_domain_free, - } -}; - -int tegra_gart_suspend(struct gart_device *gart) -{ - u32 *data = gart->savedata; - unsigned long iova; - - /* - * All GART users shall be suspended at this point. Disable - * address translation to trap all GART accesses as invalid - * memory accesses. - */ - writel_relaxed(0, gart->regs + GART_CONFIG); - FLUSH_GART_REGS(gart); - - for_each_gart_pte(gart, iova) - *(data++) = gart_read_pte(gart, iova); - - return 0; -} - -int tegra_gart_resume(struct gart_device *gart) -{ - do_gart_setup(gart, gart->savedata); - - return 0; -} - -struct gart_device *tegra_gart_probe(struct device *dev, struct tegra_mc *mc) -{ - struct gart_device *gart; - struct resource *res; - int err; - - BUILD_BUG_ON(PAGE_SHIFT != GART_PAGE_SHIFT); - - /* the GART memory aperture is required */ - res = platform_get_resource(to_platform_device(dev), IORESOURCE_MEM, 1); - if (!res) { - dev_err(dev, "Memory aperture resource unavailable\n"); - return ERR_PTR(-ENXIO); - } - - gart = kzalloc(sizeof(*gart), GFP_KERNEL); - if (!gart) - return ERR_PTR(-ENOMEM); - - gart_handle = gart; - - gart->dev = dev; - gart->regs = mc->regs + GART_REG_BASE; - gart->iovmm_base = res->start; - gart->iovmm_end = res->end + 1; - spin_lock_init(&gart->pte_lock); - spin_lock_init(&gart->dom_lock); - - do_gart_setup(gart, NULL); - - err = iommu_device_sysfs_add(&gart->iommu, dev, NULL, "gart"); - if (err) - goto free_gart; - - err = iommu_device_register(&gart->iommu, &gart_iommu_ops, dev); - if (err) - goto remove_sysfs; - - gart->savedata = vmalloc(resource_size(res) / GART_PAGE_SIZE * - sizeof(u32)); - if (!gart->savedata) { - err = -ENOMEM; - goto unregister_iommu; - } - - return gart; - -unregister_iommu: - iommu_device_unregister(&gart->iommu); -remove_sysfs: - iommu_device_sysfs_remove(&gart->iommu); -free_gart: - kfree(gart); - - return ERR_PTR(err); -} - -module_param(gart_debug, bool, 0644); -MODULE_PARM_DESC(gart_debug, "Enable GART debugging"); diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index 4a750da1c12aae..8b5ad290db56f2 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -942,35 +942,6 @@ static int tegra_mc_probe(struct platform_device *pdev) } } - if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && !mc->soc->smmu) { - mc->gart = tegra_gart_probe(&pdev->dev, mc); - if (IS_ERR(mc->gart)) { - dev_err(&pdev->dev, "failed to probe GART: %ld\n", - PTR_ERR(mc->gart)); - mc->gart = NULL; - } - } - - return 0; -} - -static int __maybe_unused tegra_mc_suspend(struct device *dev) -{ - struct tegra_mc *mc = dev_get_drvdata(dev); - - if (mc->soc->ops && mc->soc->ops->suspend) - return mc->soc->ops->suspend(mc); - - return 0; -} - -static int __maybe_unused tegra_mc_resume(struct device *dev) -{ - struct tegra_mc *mc = dev_get_drvdata(dev); - - if (mc->soc->ops && mc->soc->ops->resume) - return mc->soc->ops->resume(mc); - return 0; } @@ -983,15 +954,10 @@ static void tegra_mc_sync_state(struct device *dev) icc_sync_state(dev); } -static const struct dev_pm_ops tegra_mc_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(tegra_mc_suspend, tegra_mc_resume) -}; - static struct platform_driver tegra_mc_driver = { .driver = { .name = "tegra-mc", .of_match_table = tegra_mc_of_match, - .pm = &tegra_mc_pm_ops, .suppress_bind_attrs = true, .sync_state = tegra_mc_sync_state, }, diff --git a/drivers/memory/tegra/tegra20.c b/drivers/memory/tegra/tegra20.c index fcd7738fcb536c..6f367f743587db 100644 --- a/drivers/memory/tegra/tegra20.c +++ b/drivers/memory/tegra/tegra20.c @@ -687,32 +687,6 @@ static int tegra20_mc_probe(struct tegra_mc *mc) return 0; } -static int tegra20_mc_suspend(struct tegra_mc *mc) -{ - int err; - - if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && mc->gart) { - err = tegra_gart_suspend(mc->gart); - if (err < 0) - return err; - } - - return 0; -} - -static int tegra20_mc_resume(struct tegra_mc *mc) -{ - int err; - - if (IS_ENABLED(CONFIG_TEGRA_IOMMU_GART) && mc->gart) { - err = tegra_gart_resume(mc->gart); - if (err < 0) - return err; - } - - return 0; -} - static irqreturn_t tegra20_mc_handle_irq(int irq, void *data) { struct tegra_mc *mc = data; @@ -788,8 +762,6 @@ static irqreturn_t tegra20_mc_handle_irq(int irq, void *data) static const struct tegra_mc_ops tegra20_mc_ops = { .probe = tegra20_mc_probe, - .suspend = tegra20_mc_suspend, - .resume = tegra20_mc_resume, .handle_irq = tegra20_mc_handle_irq, }; diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h index fc3001483e6242..fedddedd2c9d33 100644 --- a/include/soc/tegra/mc.h +++ b/include/soc/tegra/mc.h @@ -96,7 +96,6 @@ struct tegra_smmu_soc { struct tegra_mc; struct tegra_smmu; -struct gart_device; #ifdef CONFIG_TEGRA_IOMMU_SMMU struct tegra_smmu *tegra_smmu_probe(struct device *dev, @@ -116,28 +115,6 @@ static inline void tegra_smmu_remove(struct tegra_smmu *smmu) } #endif -#ifdef CONFIG_TEGRA_IOMMU_GART -struct gart_device *tegra_gart_probe(struct device *dev, struct tegra_mc *mc); -int tegra_gart_suspend(struct gart_device *gart); -int tegra_gart_resume(struct gart_device *gart); -#else -static inline struct gart_device * -tegra_gart_probe(struct device *dev, struct tegra_mc *mc) -{ - return ERR_PTR(-ENODEV); -} - -static inline int tegra_gart_suspend(struct gart_device *gart) -{ - return -ENODEV; -} - -static inline int tegra_gart_resume(struct gart_device *gart) -{ - return -ENODEV; -} -#endif - struct tegra_mc_reset { const char *name; unsigned long id; @@ -182,8 +159,6 @@ struct tegra_mc_ops { */ int (*probe)(struct tegra_mc *mc); void (*remove)(struct tegra_mc *mc); - int (*suspend)(struct tegra_mc *mc); - int (*resume)(struct tegra_mc *mc); irqreturn_t (*handle_irq)(int irq, void *data); int (*probe_device)(struct tegra_mc *mc, struct device *dev); }; @@ -222,7 +197,6 @@ struct tegra_mc { struct tegra_bpmp *bpmp; struct device *dev; struct tegra_smmu *smmu; - struct gart_device *gart; void __iomem *regs; void __iomem *bcast_ch_regs; void __iomem **ch_regs; From patchwork Mon Jul 24 17:21:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325226 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 258FCC001DF for ; Mon, 24 Jul 2023 18:30:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dijjnmcTwEIG43n1u0a4rcB854nzj8vKoYIf9eO0DwA=; b=odHU66EFdLT6w9kTb67C0CwApR q9o5tPqvgU6aQgQnq8roN7TXB4OGbuU7nG1s6VoVonClzptJhRYCT9Xl+dAXMCeFFArFNwYUHSEoc gsXB0X03iGj8Y9fB26myMU9TLMXQ6zjunITZFTekxao4krl9QwCJszcYNtbSl9yNYhoZ3MD8j2a/c pu00N0jBzhBe5t/x9Sc4vaJdhw1QhiIv+9AQFGSwTtfhgFDHXECkwY6N2UVtQ8vsyQ8nwwV29wxLI 44Tz0iOiKWJik7GHgIuJRrcmqgLcU2ohomE5kvU+e1f55M2u5TSTegNswBzIqxr2YteobUP14b7mu R/rmqSBQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qO0K6-005CXf-21; Mon, 24 Jul 2023 18:30:22 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGZ-004zzV-30; Mon, 24 Jul 2023 17:22:41 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Dv6gDd93yoGNZVEiQ0AxVjy/EECOV6ZYnnyega/wt7WA8F00mA/n3zWtWq8snofr+VniB/pB1jFVrZsXSld3ePvfaiGQQA/S3bjHfA4GMOgWsEOvw1YYaoewOQL5ExsO9d92baicf8kccqVfUGRcKlji83z9wGMYLvrmRWK7Vqr83+rEGNWHh5tIksRaLi6NT9ycwFrcpOlPYSorp2agcgIbILBjPY8WjmvVDgZ955Yv3Hm9Dq1cWbqATLF2+dDymZNfTbwaXgoDIxN6L2/lWJQGQ4VOY3mIjubsyszeMOkX1pnK4rf1s8YMFKR0h2B2TJN5isHcDzMOLIG9mM+4ag== 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=dijjnmcTwEIG43n1u0a4rcB854nzj8vKoYIf9eO0DwA=; b=eB+/QD/NyVmRg6BV4hPyH9Em++m8afuOFysSMXdEKJdQTupsXBc50NFrX3oO7oBU8DajooJTNNxo5VdKiao6/H+IPc37Ey87WbCS0iDas+Bi6SpbO4qtvidJgh4jTEuO0Gmc3GcbEzziVyycU72zxzzqbMiwfU6b5Tuj6aRKXwHVI+iXbYBL1pUbXieaXp3nwdIiQlEiuaaAh36lldVl0jjke/pn2qXYjSmWFYifvKfONTPi+bNDd1vFD7IQSJhBEClqICUsrm3seBYOYMCck5a48RizOj8Q4rDeScJnaIYBf05TM8Yd5aj72/NAoqnF7f0NhRN8tAfCEK+WeTQQ0w== 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=dijjnmcTwEIG43n1u0a4rcB854nzj8vKoYIf9eO0DwA=; b=UBZPEcQeQJ5sb197ociuAryqMHbqUNmzMYcp3tsHQld19VVrq0SvTsC5qVszP6/FyaUy+b/UvOS/UWEFc1C2DIAPf4UBkR2Bm6f6MHynmWXGWB3fUspO5hOyJvljn4xGBixZRkmBa2PQ2BkXw0WPQRoqmzTemrSmaoeamBp0gXxoVewoTzBlYMAb3UNnn2AkARowwUiLW1PUHqm7Eupt/9dWg88VXibacuAa78BgCm/813CLsjW2dJXAyATPOmxNDqA+F9tSsynlE5aQdL3jjtbhT87vVfckXsMiAib+jB/eBwrHaY9VE2vVWy55kWNz+rfqm/EGYmOuuL0aNLwSQA== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:22 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:22 +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 v5 07/25] iommu/mtk_iommu_v1: Implement an IDENTITY domain Date: Mon, 24 Jul 2023 14:21:57 -0300 Message-ID: <7-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0013.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::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_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: 1361a654-8c1e-4674-6f8d-08db8c6a8804 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);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: 1361a654-8c1e-4674-6f8d-08db8c6a8804 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.0600 (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: ufcHP9iSdAtfGtGFXhhgnu0hPvQojc1Xb8k4TwEf3eIgiRgfNLZJVovcfPl5McoF X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102240_012247_C4560238 X-CRM114-Status: GOOD ( 13.61 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org What mtk does during mtk_iommu_v1_set_platform_dma() is actually putting the iommu into identity mode. Make this available as a proper IDENTITY domain. The mtk_iommu_v1_def_domain_type() from commit 8bbe13f52cb7 ("iommu/mediatek-v1: Add def_domain_type") explains this was needed to allow probe_finalize() to be called, but now the IDENTITY domain will do the same job so change the returned def_domain_type. mkt_v1 is the only driver that returns IOMMU_DOMAIN_UNMANAGED from def_domain_type(). This allows the next patch to enforce an IDENTITY domain policy for this driver. Signed-off-by: Jason Gunthorpe --- drivers/iommu/mtk_iommu_v1.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index 8a0a5e5d049f4a..cc3e7d53d33ad9 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -319,11 +319,27 @@ static int mtk_iommu_v1_attach_device(struct iommu_domain *domain, struct device return 0; } -static void mtk_iommu_v1_set_platform_dma(struct device *dev) +static int mtk_iommu_v1_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { struct mtk_iommu_v1_data *data = dev_iommu_priv_get(dev); mtk_iommu_v1_config(data, dev, false); + return 0; +} + +static struct iommu_domain_ops mtk_iommu_v1_identity_ops = { + .attach_dev = mtk_iommu_v1_identity_attach, +}; + +static struct iommu_domain mtk_iommu_v1_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &mtk_iommu_v1_identity_ops, +}; + +static void mtk_iommu_v1_set_platform_dma(struct device *dev) +{ + mtk_iommu_v1_identity_attach(&mtk_iommu_v1_identity_domain, dev); } static int mtk_iommu_v1_map(struct iommu_domain *domain, unsigned long iova, @@ -443,7 +459,7 @@ static int mtk_iommu_v1_create_mapping(struct device *dev, struct of_phandle_arg static int mtk_iommu_v1_def_domain_type(struct device *dev) { - return IOMMU_DOMAIN_UNMANAGED; + return IOMMU_DOMAIN_IDENTITY; } static struct iommu_device *mtk_iommu_v1_probe_device(struct device *dev) @@ -578,6 +594,7 @@ static int mtk_iommu_v1_hw_init(const struct mtk_iommu_v1_data *data) } static const struct iommu_ops mtk_iommu_v1_ops = { + .identity_domain = &mtk_iommu_v1_identity_domain, .domain_alloc = mtk_iommu_v1_domain_alloc, .probe_device = mtk_iommu_v1_probe_device, .probe_finalize = mtk_iommu_v1_probe_finalize, From patchwork Mon Jul 24 17:21:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325105 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E537CC04A6A for ; Mon, 24 Jul 2023 17:24:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=iicdSxsir2rkaQf9mbpPeHY1W6j/41BNr0dR/m/Hx+U=; b=ZjAcCoukelZ9kfvxj/KqHCbdVg 2+v4aNABJZ7593vfDzU2udMy7vmL5cmvD8IQ4sf49dDCucFlUX0EuuNJo8cPXap+N+FNGxlkbsUZi MGL+YxMd1n2nI9igx5W7agP2FHVvnoI9pfT6A3ULltsaoDeEY1l0T3PaI/bw+d4RKXVnkt5T+EWDX KsyiXzXGWW4npHWme6PNFbwrrQ6H5OJNM3GyljgB4OYy1vK2ziiONUPVAhMSfhk6Rxxf7X94xzKkU ldb/VrY20Vfctg3ElEctjwEt3yjk8llza+2vg8AuDRfWnU9+nNrJvGDrSfZjhFRSLXth0ENo7Z4YY 8WosKITg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIP-0051iG-1i; Mon, 24 Jul 2023 17:24:33 +0000 Received: from mail-mw2nam10on2062e.outbound.protection.outlook.com ([2a01:111:f400:7e89::62e] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGX-00502A-2y; Mon, 24 Jul 2023 17:22:40 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=fUUpB4XTP9QHd3jVPkksmfF8hjtbkt7LHzBNmY7kACVPfKc24JMr6lgy/3SfbREu96KSS+hnffKVhAB7AuZGGLj7YdWAm74KLI3EVWEFfBoHNfFRLlkHDNhL26aJhfPA1SzZku0l7IrjYj+Ve3LuNLh/5Woedkx3m63fI1o5J47A9wfIBIH8viLXusND+hqvOSzXR9FjQdtA8g710QR0FE8tzOaMyHe8W43WRURSJoYg6WEmZ+j1VeEDc6LpxSMhWVpidQk8zF4i1SAsA9Q5gPIIrXg1Vf8HBDEsoHEJ7v4YMOdgLv74K1E2dMEx7q2yyOGG7H/d69LQQLvEn/vmEA== 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=iicdSxsir2rkaQf9mbpPeHY1W6j/41BNr0dR/m/Hx+U=; b=EsWCM/5ZIEUKEtbk5SbvkW4z7WAUQwoMXkmIkvvnR6eU6LLIGuFS36fgfdC34TbUJPkIdnkMACqATfIXTeRQiz7iDHSVSRnUTClVT/BAW21nFsoE4Fjyztai0D5tE0ZnWRH4vedA5KxU+Nd6QNInwipZphaTOFG35ES85n30UJoz0IxRCtCSr05PHOSHVBZbqxnRSRCTjx5ASHCSMGKc3IVcTAIWJIlvbNnm5KDSE79SliSD43CD6dWk834yjSLdXJnk4PlT4yz+rpYiZOIdyc9SXMvmSFSgsUXnypHuwJeL+/PHEcdx52Yjnhu4idw5WQTZcmDEgUVl0F6QaQpzew== 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=iicdSxsir2rkaQf9mbpPeHY1W6j/41BNr0dR/m/Hx+U=; b=HuDQdcoT/Fsw1qNw0zhqr+50gbjZBIWqgudXNfbAoDdLY7e75Abi/Yk6vtwmjsUfum6WuS2IkBxtkOIfi6rTRGnktMF096rBD9r4fve+l9s6R078aPcgtIcNMH6kGdVNWIDsFtBRVdiwCZkaYSRVnyHddG/D5wyPN6/zy88GjpDF7OANBm5BMnnBytzCkOi2tq4939m5JJyP7T6Q9Mb/V92MdoXXyYBl60Ei2yngWEfF24UExy5Rl7jknsImck1R7xoC2GkfNWSbQWI/325o6PDXfENK0EUCzA+sTtygFoZwDMKUrZzEBOmquPiYSgoGkmpCmFLXoMRBnUyORLmnNQ== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:21 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:21 +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 v5 08/25] iommu: Reorganize iommu_get_default_domain_type() to respect def_domain_type() Date: Mon, 24 Jul 2023 14:21:58 -0300 Message-ID: <8-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0009.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::14) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: b4fd4656-c17c-415b-d4be-08db8c6a87e7 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005)(4216001);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: b4fd4656-c17c-415b-d4be-08db8c6a87e7 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.9125 (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: MchAPG6svzbwQRLqs1CvZu0nuR4Co12JdfbvG6PoNU8XiMFWakJhOOwnGz39Wj4+ X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102238_098346_A33E218D X-CRM114-Status: GOOD ( 16.18 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Except for dart every driver returns 0 or IDENTITY from def_domain_type(). The drivers that return IDENTITY have some kind of good reason, typically that quirky hardware really can't support anything other than IDENTITY. Arrange things so that if the driver says it needs IDENTITY then iommu_get_default_domain_type() either fails or returns IDENTITY. It will never reject the driver's override to IDENTITY. The only real functional difference is that the PCI untrusted flag is now ignored for quirky HW instead of overriding the IOMMU driver. This makes the next patch cleaner that wants to force IDENTITY always for ARM_IOMMU because there is no support for DMA. Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 66 +++++++++++++++++++++---------------------- 1 file changed, 33 insertions(+), 33 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index c64365169b678d..53174179102d17 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1669,19 +1669,6 @@ struct iommu_group *fsl_mc_device_group(struct device *dev) } EXPORT_SYMBOL_GPL(fsl_mc_device_group); -static int iommu_get_def_domain_type(struct device *dev) -{ - const struct iommu_ops *ops = dev_iommu_ops(dev); - - if (dev_is_pci(dev) && to_pci_dev(dev)->untrusted) - return IOMMU_DOMAIN_DMA; - - if (ops->def_domain_type) - return ops->def_domain_type(dev); - - return 0; -} - static struct iommu_domain * __iommu_group_alloc_default_domain(const struct bus_type *bus, struct iommu_group *group, int req_type) @@ -1775,36 +1762,49 @@ static int iommu_bus_notifier(struct notifier_block *nb, static int iommu_get_default_domain_type(struct iommu_group *group, int target_type) { + const struct iommu_ops *ops = dev_iommu_ops( + list_first_entry(&group->devices, struct group_device, list) + ->dev); int best_type = target_type; struct group_device *gdev; struct device *last_dev; + int type; lockdep_assert_held(&group->mutex); - for_each_group_device(group, gdev) { - unsigned int type = iommu_get_def_domain_type(gdev->dev); - - if (best_type && type && best_type != type) { - if (target_type) { - dev_err_ratelimited( - gdev->dev, - "Device cannot be in %s domain\n", - iommu_domain_type_str(target_type)); - return -1; - } - - dev_warn( - gdev->dev, - "Device needs domain type %s, but device %s in the same iommu group requires type %s - using default\n", - iommu_domain_type_str(type), dev_name(last_dev), - iommu_domain_type_str(best_type)); - return 0; + type = best_type; + if (ops->def_domain_type) { + type = ops->def_domain_type(gdev->dev); + if (best_type && type && best_type != type) + goto err; } - if (!best_type) - best_type = type; + + if (dev_is_pci(gdev->dev) && to_pci_dev(gdev->dev)->untrusted) { + type = IOMMU_DOMAIN_DMA; + if (best_type && type && best_type != type) + goto err; + } + best_type = type; last_dev = gdev->dev; } return best_type; + +err: + if (target_type) { + dev_err_ratelimited( + gdev->dev, + "Device cannot be in %s domain - it is forcing %s\n", + iommu_domain_type_str(target_type), + iommu_domain_type_str(type)); + return -1; + } + + dev_warn( + gdev->dev, + "Device needs domain type %s, but device %s in the same iommu group requires type %s - using default\n", + iommu_domain_type_str(type), dev_name(last_dev), + iommu_domain_type_str(best_type)); + return 0; } static void iommu_group_do_probe_finalize(struct device *dev) From patchwork Mon Jul 24 17:21:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325107 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 70153C001DF for ; Mon, 24 Jul 2023 17:24:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=eopBiMSqCw6AUiHv1xpZ0ZPeA3x+XCX2w/wkIKizTT4=; b=cSI9vVpYiX+fTA4jhg0VtxMnV2 47GW78wyBnwWRBHVtsoCvnsM8Edf2NGO5Xln8UEF5vQLC0QIsqA2dUJnuvKQBzFsHKsFpS904KY1+ 2x2VZT5BdbQmVE8I8tILfJ6A5ydnLnOTOl4GdCQKhJMfxc+iMg09dro/qWCtEi6vc4HMF+jL6S+02 yr+4ODPUH59APwycayuXjs9byimUwYFCkDpHO/vff+4+DpEBqJ4NYmWn7nRurglk0LAl8WoSp7P8x HRJI/RvZTsh8YRjH2dF6eCRs3TOeDg711yAYXEjXS0bUJobyLjCBBmQ4B0Dw+tayLbAUccL9S8Q98 ipHuiWCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIT-0051mE-2U; Mon, 24 Jul 2023 17:24:37 +0000 Received: from mail-mw2nam04on20605.outbound.protection.outlook.com ([2a01:111:f400:7e8c::605] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGY-005096-2E; Mon, 24 Jul 2023 17:22:41 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q5eX7IWH4DUwVI3joMNrxfOz0x8jU9v7p5e6ipAXlTrzxsd9eV6+8lXK2kLOU18Fw5cwHQEmtA4TM8HGRZ/lqMVQn5UTM5RGeD0xmz4cC2NVLhFazw7YZlCSYKI/0RiB6QUoK8tUMl3jesERZnPfpPOP7YxCapFZZ7V9gGHOAs1qP4NY8h6bGUlU4X3JaSlXXunTgDSeXuOKlZMzcxm0PirlgbpocP1YGKdgR9qNNm9V7xLynLAWZff2yDmSnmZV44tqtGpnS3jKzUTRuMrKEnd4a8DkKK1X/uFis/Jzta2Yyt934d2HiZ15Iac3KgJh4i17+QXaoiHvMFD1yPUsVw== 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=eopBiMSqCw6AUiHv1xpZ0ZPeA3x+XCX2w/wkIKizTT4=; b=Fp97QhxiKP9wMklaocJ4bQhuHmCs6YD3Wjh0A/IltMJRT8U3fYPPyOohZ7tJiy5H7qUV0PsHk2gRYtGfOxxaWm1DciLKJBYAS0rKxAeqTrBfszPaQ7lMsIqDVW2ILEugOZSvHAFIhMWk9eEI5qQEYlwhzD951MpMlj+TLR044ASiLiwdAvaZkdRT+lgQVLDLNTQ4tXmikJIV7WkFuAUoIuDrSKWu5BPtO87VyEyj9I5gZHmW8qsIcqjc7PQNw58coRpQYTqqLD7LzjUTqFTOe3BBTps9HaCFL27u9/9YpDkMJmnirGLT6LOfEa1NfczK00BXhksE7rVea09SfzTBeg== 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=eopBiMSqCw6AUiHv1xpZ0ZPeA3x+XCX2w/wkIKizTT4=; b=Z90j9sMoeU/UEyeWMVxB7PzGAcX2UPaYOTobWGVvgfGroO4zYPUTr4g7Pm05rIzZ6QIj9eFd4/qUlEi3mSOrzX2lWoVekIjta5GQ4dhMq7FZYtVcaeFQGMwDrlG1uxUIkPieSM1tN/bdYDajeZDICzAMLhpFRy3gNYFvFItlXwOyE7eXTa2hPH95BBzI0bvK9n/c8q8WCl0mM7QMr6uhu7HBiuwiNzLcvxdX7qXM00mmrmhNk0P8I/d+v9phBBMu/ZLbVxpHyFY1TEztNCVoWmFZUG3FpSBCCn8zAU63/3TM7g/W6aX/tHOdWlm2TJSZ+TMGZ/ZMtxTQ6eQWXHrXIg== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:25 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:25 +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 v5 09/25] iommu: Allow an IDENTITY domain as the default_domain in ARM32 Date: Mon, 24 Jul 2023 14:21:59 -0300 Message-ID: <9-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0001.namprd22.prod.outlook.com (2603:10b6:208:238::6) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: c7b3cd54-ee91-4a3b-c617-08db8c6a8882 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005)(4216001);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: c7b3cd54-ee91-4a3b-c617-08db8c6a8882 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.8994 (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: MHJu+Z6LHwxHxRTfsIAMQL5mQqmych2mX9R5zK19zHBVpE12Gqa4Ikirb8Ohe6Fm X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102238_827338_EDDC8141 X-CRM114-Status: GOOD ( 22.83 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Even though dma-iommu.c and CONFIG_ARM_DMA_USE_IOMMU do approximately the same stuff, the way they relate to the IOMMU core is quiet different. dma-iommu.c expects the core code to setup an UNMANAGED domain (of type IOMMU_DOMAIN_DMA) and then configures itself to use that domain. This becomes the default_domain for the group. ARM_DMA_USE_IOMMU does not use the default_domain, instead it directly allocates an UNMANAGED domain and operates it just like an external driver. In this case group->default_domain is NULL. If the driver provides a global static identity_domain then automatically use it as the default_domain when in ARM_DMA_USE_IOMMU mode. This allows drivers that implemented default_domain == NULL as an IDENTITY translation to trivially get a properly labeled non-NULL default_domain on ARM32 configs. With this arrangment when ARM_DMA_USE_IOMMU wants to disconnect from the device the normal detach_domain flow will restore the IDENTITY domain as the default domain. Overall this makes attach_dev() of the IDENTITY domain called in the same places as detach_dev(). This effectively migrates these drivers to default_domain mode. For drivers that support ARM64 they will gain support for the IDENTITY translation mode for the dma_api and behave in a uniform way. Drivers use this by setting ops->identity_domain to a static singleton iommu_domain that implements the identity attach. If the core detects ARM_DMA_USE_IOMMU mode then it automatically attaches the IDENTITY domain during probe. Drivers can continue to prevent the use of DMA translation by returning IOMMU_DOMAIN_IDENTITY from def_domain_type, this will completely prevent IOMMU_DMA from running but will not impact ARM_DMA_USE_IOMMU. This allows removing the set_platform_dma_ops() from every remaining driver. Remove the set_platform_dma_ops from rockchip and mkt_v1 as all it does is set an existing global static identity domain. mkt_v1 does not support IOMMU_DOMAIN_DMA and it does not compile on ARM64 so this transformation is safe. Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- drivers/iommu/iommu.c | 26 +++++++++++++++++++++++--- drivers/iommu/mtk_iommu_v1.c | 12 ------------ drivers/iommu/rockchip-iommu.c | 10 ---------- 3 files changed, 23 insertions(+), 25 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 53174179102d17..a1a93990b3a211 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1771,15 +1771,35 @@ static int iommu_get_default_domain_type(struct iommu_group *group, int type; lockdep_assert_held(&group->mutex); + + /* + * ARM32 drivers supporting CONFIG_ARM_DMA_USE_IOMMU can declare an + * identity_domain and it will automatically become their default + * domain. Later on ARM_DMA_USE_IOMMU will install its UNMANAGED domain. + * Override the selection to IDENTITY if we are sure the driver supports + * it. + */ + if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) && ops->identity_domain) { + type = IOMMU_DOMAIN_IDENTITY; + if (best_type && type && best_type != type) + return -1; + best_type = target_type = IOMMU_DOMAIN_IDENTITY; + } + for_each_group_device(group, gdev) { type = best_type; if (ops->def_domain_type) { type = ops->def_domain_type(gdev->dev); - if (best_type && type && best_type != type) + if (best_type && type && best_type != type) { + /* Stick with the last driver override we saw */ + best_type = type; goto err; + } } - if (dev_is_pci(gdev->dev) && to_pci_dev(gdev->dev)->untrusted) { + /* No ARM32 using systems will set untrusted, it cannot work. */ + if (dev_is_pci(gdev->dev) && to_pci_dev(gdev->dev)->untrusted && + !WARN_ON(IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU))) { type = IOMMU_DOMAIN_DMA; if (best_type && type && best_type != type) goto err; @@ -1804,7 +1824,7 @@ static int iommu_get_default_domain_type(struct iommu_group *group, "Device needs domain type %s, but device %s in the same iommu group requires type %s - using default\n", iommu_domain_type_str(type), dev_name(last_dev), iommu_domain_type_str(best_type)); - return 0; + return best_type; } static void iommu_group_do_probe_finalize(struct device *dev) diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index cc3e7d53d33ad9..7c0c1d50df5f75 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -337,11 +337,6 @@ static struct iommu_domain mtk_iommu_v1_identity_domain = { .ops = &mtk_iommu_v1_identity_ops, }; -static void mtk_iommu_v1_set_platform_dma(struct device *dev) -{ - mtk_iommu_v1_identity_attach(&mtk_iommu_v1_identity_domain, dev); -} - static int mtk_iommu_v1_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -457,11 +452,6 @@ static int mtk_iommu_v1_create_mapping(struct device *dev, struct of_phandle_arg return 0; } -static int mtk_iommu_v1_def_domain_type(struct device *dev) -{ - return IOMMU_DOMAIN_IDENTITY; -} - static struct iommu_device *mtk_iommu_v1_probe_device(struct device *dev) { struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); @@ -599,10 +589,8 @@ static const struct iommu_ops mtk_iommu_v1_ops = { .probe_device = mtk_iommu_v1_probe_device, .probe_finalize = mtk_iommu_v1_probe_finalize, .release_device = mtk_iommu_v1_release_device, - .def_domain_type = mtk_iommu_v1_def_domain_type, .device_group = generic_device_group, .pgsize_bitmap = MT2701_IOMMU_PAGE_SIZE, - .set_platform_dma_ops = mtk_iommu_v1_set_platform_dma, .owner = THIS_MODULE, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = mtk_iommu_v1_attach_device, diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index 033678f2f8b3ab..a582525d36f8cc 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -998,13 +998,6 @@ static struct iommu_domain rk_identity_domain = { .ops = &rk_identity_ops, }; -#ifdef CONFIG_ARM -static void rk_iommu_set_platform_dma(struct device *dev) -{ - WARN_ON(rk_iommu_identity_attach(&rk_identity_domain, dev)); -} -#endif - static int rk_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { @@ -1183,9 +1176,6 @@ static const struct iommu_ops rk_iommu_ops = { .probe_device = rk_iommu_probe_device, .release_device = rk_iommu_release_device, .device_group = rk_iommu_device_group, -#ifdef CONFIG_ARM - .set_platform_dma_ops = rk_iommu_set_platform_dma, -#endif .pgsize_bitmap = RK_IOMMU_PGSIZE_BITMAP, .of_xlate = rk_iommu_of_xlate, .default_domain_ops = &(const struct iommu_domain_ops) { From patchwork Mon Jul 24 17:22:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325227 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 091C0EB64DD for ; Mon, 24 Jul 2023 18:30:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tuioqqLJ9nwTxiQOZ8nAoXdBA08XbZNNbPO6KQsUrqM=; b=rHz7dGAwLwl6igjzp1E/BIMgMF irCQzBNtIyPhMnbQIFeP8mS3vliKqSs8AblvWBMJFWtDJ7rUFP9jX6yneqKfEjf2DhbIR57hk5PSp WUTY4n0lOhhheJM5fVEy4q5PJZ+y2vRtEA8Dvc5OfjjdwJ/AT5UvTjk7IdK8wdYT7HPdzZEc6Nv1D FXWu02a3E4MCaFbQd7DO7CmmRmyUtsfUO22VcXuEGbIL6WtsBKfKJNOqBkT+TMHN5OI0ytsNZN9rA h9xyfN6XT6Nxrt0o4tqwsqN+J1nIUGTP9+lB3z5QQ81nOVOrHHHlEouger4QuWcg49qdpGPx1WdP7 UUXPIcCQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qO0K5-005CXI-1k; Mon, 24 Jul 2023 18:30:21 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGS-00500M-21; Mon, 24 Jul 2023 17:22:34 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=VX4phZzS+E72sU71eBO1NFA7mfpvhnQn1AR6OeX4laKPrmfbhg1ABsALLId2KxXgWaSzsRFKZnX7nlT8epiIwPE8gKl2QC/U9Ydh50BQZ08BT7f54a74+/0E+GBfEa/BXc3ZoMyxLFCuoEcMmdwy9yMhVMYzVZvUwLYJJVlD/WbgLlhBSI5/fqZATtazEtG5i84AtwB/3FtXOyxZdkU33OhA0QuTvCol5U9zE8NGOpIQnb6wRtlS3a2QNlIBG8N7oXuyCtAVQbSTDVg/cw/DPZe6q++bmGFAVrv6or1oB4BPCEsarPjtDeM9bne5a030zKrzpa/gwQTU+O+z7ni9HA== 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=tuioqqLJ9nwTxiQOZ8nAoXdBA08XbZNNbPO6KQsUrqM=; b=Mj/ziqi9Wa9B3wro0wKvZMB4MWyxMBrrA7owRGvMnaPD5HY0jdp+yH+4djY7gDOlhLQ8HFR5mBy7WuzKc2m5qcaJY6Y9Ku9+6aQtt3xr45t6U9PqNSxURDnPqdcFcx3kGsdX/pYa/vgmvU9aZjUXu5+rYOY2eIvfcQMEchGMuzMKCA+nFFXf+hKhxt68EVYfHlNkALJWrIIP8/exKUq2GzKrrXfPk0nlz8jdLG0QkxePbS5IyGSylo8GK9IekaKwMW2DKNWM9I3Y76HFBM5Y0eCjgDZj3FdVr4HVQlHozjcreYCp0q+DEwwHUwUT1tMG3RQBZtkhGCgT0hbXGsRFMw== 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=tuioqqLJ9nwTxiQOZ8nAoXdBA08XbZNNbPO6KQsUrqM=; b=Bw7mt5ewhjuo8RLYONK9lUJEB6sHanYcACrWKqUjWTGQa6WwURt1BBPVKUGt5vDLtPmKYtozLChy0WW9KtBXd3W0UUAJ31cHEFBqMMVrM2smF4iPbaEvNVluDi9j7LXSE98Z7tVfLYYEciuOt4WHFP9ghRGwYU++MN1/EfA4fosqOv//s1pVk596/xyl8AyCeMUZpqFISBokKsnJoOQiaBuDk2+cK+PnW9zXTqP/GtlRWSslgx06Mqjsuhav/JMe2v68/JeMpMwbQJ/V5ufLfFCOqUfufRuwngO0E6VGUAG3SymXlQyxXzQ2fkdmjiFM5IM4dW/otyuLr4zB9MNk2w== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:24 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:24 +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 v5 10/25] iommu/exynos: Implement an IDENTITY domain Date: Mon, 24 Jul 2023 14:22:00 -0300 Message-ID: <10-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0021.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::26) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 339f789d-ca7b-4e71-2b42-08db8c6a8866 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 339f789d-ca7b-4e71-2b42-08db8c6a8866 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.7211 (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: rhOAg1bb53PF6fMCYa20t57lkZkvU8kAjzXzrZ+2b70tedQrtyvQCDufJ6DnmTJl X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102232_695406_D968FC9C X-CRM114-Status: GOOD ( 15.18 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org What exynos calls exynos_iommu_detach_device is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. Tested-by: Marek Szyprowski Acked-by: Marek Szyprowski Signed-off-by: Jason Gunthorpe --- drivers/iommu/exynos-iommu.c | 66 +++++++++++++++++------------------- 1 file changed, 32 insertions(+), 34 deletions(-) diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index c275fe71c4db32..5e12b85dfe8705 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -24,6 +24,7 @@ typedef u32 sysmmu_iova_t; typedef u32 sysmmu_pte_t; +static struct iommu_domain exynos_identity_domain; /* We do not consider super section mapping (16MB) */ #define SECT_ORDER 20 @@ -829,7 +830,7 @@ static int __maybe_unused exynos_sysmmu_suspend(struct device *dev) struct exynos_iommu_owner *owner = dev_iommu_priv_get(master); mutex_lock(&owner->rpm_lock); - if (data->domain) { + if (&data->domain->domain != &exynos_identity_domain) { dev_dbg(data->sysmmu, "saving state\n"); __sysmmu_disable(data); } @@ -847,7 +848,7 @@ static int __maybe_unused exynos_sysmmu_resume(struct device *dev) struct exynos_iommu_owner *owner = dev_iommu_priv_get(master); mutex_lock(&owner->rpm_lock); - if (data->domain) { + if (&data->domain->domain != &exynos_identity_domain) { dev_dbg(data->sysmmu, "restoring state\n"); __sysmmu_enable(data); } @@ -980,17 +981,20 @@ static void exynos_iommu_domain_free(struct iommu_domain *iommu_domain) kfree(domain); } -static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain, - struct device *dev) +static int exynos_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { - struct exynos_iommu_domain *domain = to_exynos_domain(iommu_domain); struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev); - phys_addr_t pagetable = virt_to_phys(domain->pgtable); + struct exynos_iommu_domain *domain; + phys_addr_t pagetable; struct sysmmu_drvdata *data, *next; unsigned long flags; - if (!has_sysmmu(dev) || owner->domain != iommu_domain) - return; + if (owner->domain == identity_domain) + return 0; + + domain = to_exynos_domain(owner->domain); + pagetable = virt_to_phys(domain->pgtable); mutex_lock(&owner->rpm_lock); @@ -1009,15 +1013,25 @@ static void exynos_iommu_detach_device(struct iommu_domain *iommu_domain, list_del_init(&data->domain_node); spin_unlock(&data->lock); } - owner->domain = NULL; + owner->domain = identity_domain; spin_unlock_irqrestore(&domain->lock, flags); mutex_unlock(&owner->rpm_lock); - dev_dbg(dev, "%s: Detached IOMMU with pgtable %pa\n", __func__, - &pagetable); + dev_dbg(dev, "%s: Restored IOMMU to IDENTITY from pgtable %pa\n", + __func__, &pagetable); + return 0; } +static struct iommu_domain_ops exynos_identity_ops = { + .attach_dev = exynos_iommu_identity_attach, +}; + +static struct iommu_domain exynos_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &exynos_identity_ops, +}; + static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain, struct device *dev) { @@ -1026,12 +1040,11 @@ static int exynos_iommu_attach_device(struct iommu_domain *iommu_domain, struct sysmmu_drvdata *data; phys_addr_t pagetable = virt_to_phys(domain->pgtable); unsigned long flags; + int err; - if (!has_sysmmu(dev)) - return -ENODEV; - - if (owner->domain) - exynos_iommu_detach_device(owner->domain, dev); + err = exynos_iommu_identity_attach(&exynos_identity_domain, dev); + if (err) + return err; mutex_lock(&owner->rpm_lock); @@ -1407,26 +1420,12 @@ static struct iommu_device *exynos_iommu_probe_device(struct device *dev) return &data->iommu; } -static void exynos_iommu_set_platform_dma(struct device *dev) -{ - struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev); - - if (owner->domain) { - struct iommu_group *group = iommu_group_get(dev); - - if (group) { - exynos_iommu_detach_device(owner->domain, dev); - iommu_group_put(group); - } - } -} - static void exynos_iommu_release_device(struct device *dev) { struct exynos_iommu_owner *owner = dev_iommu_priv_get(dev); struct sysmmu_drvdata *data; - exynos_iommu_set_platform_dma(dev); + WARN_ON(exynos_iommu_identity_attach(&exynos_identity_domain, dev)); list_for_each_entry(data, &owner->controllers, owner_node) device_link_del(data->link); @@ -1457,6 +1456,7 @@ static int exynos_iommu_of_xlate(struct device *dev, INIT_LIST_HEAD(&owner->controllers); mutex_init(&owner->rpm_lock); + owner->domain = &exynos_identity_domain; dev_iommu_priv_set(dev, owner); } @@ -1471,11 +1471,9 @@ static int exynos_iommu_of_xlate(struct device *dev, } static const struct iommu_ops exynos_iommu_ops = { + .identity_domain = &exynos_identity_domain, .domain_alloc = exynos_iommu_domain_alloc, .device_group = generic_device_group, -#ifdef CONFIG_ARM - .set_platform_dma_ops = exynos_iommu_set_platform_dma, -#endif .probe_device = exynos_iommu_probe_device, .release_device = exynos_iommu_release_device, .pgsize_bitmap = SECT_SIZE | LPAGE_SIZE | SPAGE_SIZE, From patchwork Mon Jul 24 17:22:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325114 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4C6ABC41513 for ; Mon, 24 Jul 2023 17:25:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=MJsrCPZt05R68MxKoBpco2NR/z5JZDCOUNeUC4SYSu0=; b=uIOSuOc/r1I6VTmdc6nDN8MVhB Kq79ov+kymTaWHkFguox6z9ZiGTrq9sas+Y1MEhZpXzP0WviWyeNhTBV/p/J5ZZNal7qamHeTUCUM U7fQRGPf+A+rAB4nGRxuEZIjrvh9AQD9qGCke6tE/KDJXZzcN3Eu8lFl6CarvoVt9W0EqS5owl3ag ObaYr7YsckCUmaSKbEtNMjYSQe4RbDNwxwlolwkR29+Aa/dUTM0YK+Np4gdQVEbokZ7OThuvaiWSl Zn6M3S2O3SkSn9lDTNJo6GvoRPKlccrMHZnd6O1ylbu7Lwb3oOjci/fPRxQgg1ScidNMU3W7NffOg VCTMvibw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzJ0-0052Kv-0M; Mon, 24 Jul 2023 17:25:10 +0000 Received: from mail-mw2nam04on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e8c::62c] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGe-00508i-2f; Mon, 24 Jul 2023 17:22:47 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nXq67p9A+fttok3siOO+eaJyv9UnUr3y+d75hDBZTaMH1uY69P5HcmFXeR20Fa54eOpFdI6PhSSPB/UjaBLxn8Z4+ussn9HTqBNpYhkL1xl0x5iRyZSYXjza2UDMXWlUOunt4jDMFDqXrfticjvuWkmqfVpL+8Yk2eF3Br5lUxcu+DsTwgiuJ7JBS1USY/GP4BNxgLV5jhJMdvj+fmxTX+9QEUokwMaUM0Sy6nGVbyixqBFewDPbz1iBJ/B2gvPVfIdxPYZYJ4gDcLtg+VsG4plmou630jhOsM3IwrO+aEzM5ZxlUDy7im/60LWPtCtEj3hThlftvV2HyOMxPP1pew== 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=MJsrCPZt05R68MxKoBpco2NR/z5JZDCOUNeUC4SYSu0=; b=VxqsGyiQMCMuEjILvGVL+EbpKzE+k+5DJdgKMhNqzDc96YoP0HZdiz3nfnapbeic5nQbgBmL0Sy1hWhsO+QCAd+rbcvupacKMm5KQHAUJuzfoBMvLHOtw/GNzO0ItihZxTv+L2J2V5kz1J5V4i7P9VpM5zZfd4nGPrVgelWsjpZfoacXe0t8cYN/YG0RrKheS/aG8I8mjdr0sP0q2sHUOr8hD+j00viSkTkn+D/n9A/KVHSkb5u8KFNVojbMCzAfYyhCDvuTv90JX/SFJVL7K4ubJhYZmJsUiLBQY38CDwzzja0h9KNTRAszTYxReYBbVP2rqG2kezXYZIBJK2/KLw== 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=MJsrCPZt05R68MxKoBpco2NR/z5JZDCOUNeUC4SYSu0=; b=R72OsMF7FTbwKKDip7K185lNBEbqXdgSngykaIEfvJ7BlNYb82vO2kWN6MAMPfLWGgrAu1/JmWwrYhA0COJXEkSFCU5UcyRiwa2NpW2URJo7H8sSAOULiAY7jFF1YHxM/F6N2wJhbm1PzT6noMTCFcP6ai55ErBjxXC1urnftToiXh45CR3bGTbbWBqY7Qp/cW1A9RsSyBCGeDKli066cBgKkBnvIYAaZjVpfPC4deUi0CNeCVpM7tmIhgbZR3Wr0cPsyXfroAar8YhwMltKfcM8jxrxBsAkfZBbiNuGtQjJJccoMTdJXCE2GHudhvzcI9bjOIj1H3XgsIfcBbpNYQ== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:28 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:28 +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 v5 11/25] iommu/tegra-smmu: Implement an IDENTITY domain Date: Mon, 24 Jul 2023 14:22:01 -0300 Message-ID: <11-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0017.namprd03.prod.outlook.com (2603:10b6:208:2d::30) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: a28d640f-192f-49bb-5b5b-08db8c6a89aa 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: a28d640f-192f-49bb-5b5b-08db8c6a89aa X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:21.1561 (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: 14SQOe3/ntZ9kJbjLlayYUlQSaoMZ0/GZl5c486gie5U1AcDxP05cJqfrp4rBkPC X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102244_891207_CB11097F X-CRM114-Status: GOOD ( 15.02 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org What tegra-smmu does during tegra_smmu_set_platform_dma() is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/tegra-smmu.c | 37 ++++++++++++++++++++++++++++++++----- 1 file changed, 32 insertions(+), 5 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 1cbf063ccf147a..f63f1d4f0bd10f 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -511,23 +511,39 @@ static int tegra_smmu_attach_dev(struct iommu_domain *domain, return err; } -static void tegra_smmu_set_platform_dma(struct device *dev) +static int tegra_smmu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - struct tegra_smmu_as *as = to_smmu_as(domain); - struct tegra_smmu *smmu = as->smmu; + struct tegra_smmu_as *as; + struct tegra_smmu *smmu; unsigned int index; if (!fwspec) - return; + return -ENODEV; + if (domain == identity_domain || !domain) + return 0; + + as = to_smmu_as(domain); + smmu = as->smmu; for (index = 0; index < fwspec->num_ids; index++) { tegra_smmu_disable(smmu, fwspec->ids[index], as->id); tegra_smmu_as_unprepare(smmu, as); } + return 0; } +static struct iommu_domain_ops tegra_smmu_identity_ops = { + .attach_dev = tegra_smmu_identity_attach, +}; + +static struct iommu_domain tegra_smmu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &tegra_smmu_identity_ops, +}; + static void tegra_smmu_set_pde(struct tegra_smmu_as *as, unsigned long iova, u32 value) { @@ -962,11 +978,22 @@ static int tegra_smmu_of_xlate(struct device *dev, return iommu_fwspec_add_ids(dev, &id, 1); } +static int tegra_smmu_def_domain_type(struct device *dev) +{ + /* + * FIXME: For now we want to run all translation in IDENTITY mode, due + * to some device quirks. Better would be to just quirk the troubled + * devices. + */ + return IOMMU_DOMAIN_IDENTITY; +} + static const struct iommu_ops tegra_smmu_ops = { + .identity_domain = &tegra_smmu_identity_domain, + .def_domain_type = &tegra_smmu_def_domain_type, .domain_alloc = tegra_smmu_domain_alloc, .probe_device = tegra_smmu_probe_device, .device_group = tegra_smmu_device_group, - .set_platform_dma_ops = tegra_smmu_set_platform_dma, .of_xlate = tegra_smmu_of_xlate, .pgsize_bitmap = SZ_4K, .default_domain_ops = &(const struct iommu_domain_ops) { From patchwork Mon Jul 24 17:22:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325095 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5180CC04A6A for ; Mon, 24 Jul 2023 17:22:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=JmN8wx0ZcwrsXaWrD4Fv2q50YdIFx6jmaYZV5yW4VDs=; b=ZeM+ZivRBm6r+PfDATfSKxAcpp v8HD0e7gImNAeuIbpXSiFdiad1uuSFEgh2aaTFltnZTxSdHcDWiWDnsnHcXDf6GPR7SJaC6FDTN5q FaFf4Dxz6RiRw7QzV3C0rHqnramSWrrQZlH4q+Kj0lPM2IuqXEUYY6uyTIGSyP+pMkItEnIYeIE9+ ki2wyTTkS5CftaZRiAhJ6QIpupmnGs6XcwhYhIg1YsZe3Er9gK5ql3gNNjRiQFFgDhPp1IC6Tt2hR AmqTOLFzoa37dsFY/+5n2bbNup8ZgXB9Jm6Cxhvb1oJSnt8y0Fv+jgqh/5iqTMD5BQuFeUtjyY9mM IDTy5h3A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGk-0050Ni-2S; Mon, 24 Jul 2023 17:22:50 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGP-00500M-1n; Mon, 24 Jul 2023 17:22:30 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=e/j0DB96KBeLvMN2ZvQH6kRkxKIh9Ahb8lFajOP1x6miNt0Ho1n/zUE2J6hLcoSGQhVkgrddVV8hO7vbNcFU5KlJKWBSNebsCfai6qYIiBeQQp1Urfhus5deCCvJbQOsvDveaRYEfVkgDygDikJWUmRZyBuAu1oaPdU0erhQ5a4XuKfFY9GqDCBNNHs72svGSyUs+UUcp7uyoR15Xj/XyxEwc6/ZA4UxNSXoefstwABaE8r1IEiyAPNcRHp7TkQIzaygaXH5bSZoGwTiUaP/Aefcebtm9amsWIfvQpEq/nF9EQHltPTPvPEGSWvEP9BPXe0nWA0xwvZGpxtSOEY3Gg== 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=JmN8wx0ZcwrsXaWrD4Fv2q50YdIFx6jmaYZV5yW4VDs=; b=fjBICSjRCbasHm5+MoQkHVMmzjUAvgYqwblo7vBU5V1vuRT4zuzLbGbhKXHZyFQPtpAb0NSzTAHD5qEAHaep+kVymoS6++e8vyCdbFL8nLCXmsL3HOOiouvmXG6mG4LLdgJO46/tPPI/wKX+cxgveHoWsBK72lGwHI9aOcxYsuYLbxmSewgfC2YyG5IC7QEAhnfzvO3Zy8TsidZeD4ApYnkQH6sYegDKJbvZUP1CaNAcmhNtng2DG3nZbPtrZ2ExIg7oO9e4i917vBrKktklW07PDo62ODnQZMpYpxKc2xgiUAWmIpdaBICOJW0o2QluT1FiD3ftuZ1zDAOSKAfkKg== 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=JmN8wx0ZcwrsXaWrD4Fv2q50YdIFx6jmaYZV5yW4VDs=; b=duUt/Lmad11JosGy9d9LOXKmrXv6eWs9uVV+iCefO+/rBtgHo1NnOxZWJLQntTw3C0Qe36/HPX7ALj8EQThWsD9Ex/k+Rx/L4Wf4v9LeL22N3rT8ydX2/02o0+sbWXef5iFLu2li0GPfRoaGBvJavHyD1Xvs8JpxgH//GH6uKrfJrrWSvzkMGvojxZh5SD+IcrOegWrpWko9zox6H9RWb195XWxUBYzyYg9GnoCbkrOgbBv2DxG9faGX0swzAQbxxoevaTpkjjsFh6uplC9cfibTsqyacVeMyVpuvZdEfOk+/bLXFCfR27quqiGtJjn/odlnktnRQELnvnk/gnwWIQ== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:23 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:22 +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 v5 12/25] iommu/tegra-smmu: Support DMA domains in tegra Date: Mon, 24 Jul 2023 14:22:02 -0300 Message-ID: <12-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0020.namprd03.prod.outlook.com (2603:10b6:208:2d::33) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 0a0f5515-7a37-499c-1f2b-08db8c6a8815 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 0a0f5515-7a37-499c-1f2b-08db8c6a8815 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.4572 (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: HBaTSiiCVtfxpunnsfWG5v9ZX6q/JplnGCobF6WWvTgajNCnddeetuF1O2f2+UKG X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102229_600658_0F5282BF X-CRM114-Status: GOOD ( 12.97 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org All ARM64 iommu drivers should support IOMMU_DOMAIN_DMA to enable dma-iommu.c. tegra is blocking dma-iommu usage, and also default_domain's, because it wants an identity translation. This is needed for some device quirk. The correct way to do this is to support IDENTITY domains and use ops->def_domain_type() to return IOMMU_DOMAIN_IDENTITY for only the quirky devices. Add support for IOMMU_DOMAIN_DMA and force IOMMU_DOMAIN_IDENTITY mode for everything so no behavior changes. Signed-off-by: Jason Gunthorpe --- drivers/iommu/tegra-smmu.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index f63f1d4f0bd10f..6cba034905edbf 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -276,7 +276,7 @@ static struct iommu_domain *tegra_smmu_domain_alloc(unsigned type) { struct tegra_smmu_as *as; - if (type != IOMMU_DOMAIN_UNMANAGED) + if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) return NULL; as = kzalloc(sizeof(*as), GFP_KERNEL); @@ -989,6 +989,12 @@ static int tegra_smmu_def_domain_type(struct device *dev) } static const struct iommu_ops tegra_smmu_ops = { + /* + * FIXME: For now we want to run all translation in IDENTITY mode, + * better would be to have a def_domain_type op do this for just the + * quirky device. + */ + .default_domain = &tegra_smmu_identity_domain, .identity_domain = &tegra_smmu_identity_domain, .def_domain_type = &tegra_smmu_def_domain_type, .domain_alloc = tegra_smmu_domain_alloc, From patchwork Mon Jul 24 17:22:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325108 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 9463BC41513 for ; Mon, 24 Jul 2023 17:24:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=P0slDXFYbJM//zyjPKYXqKC9rH+RXKJstRFeiCBm71E=; b=0bw5/qVM5PZ7Z4HVBv1ksQMxei Lv1mKgH8/LtoKXYbB8UB61WUKhWqe5ipFJkd6xgDPC7U31jquQhjPdfp1TlLq1aEQTKm2a9ReMepB HcrswSujxXUygP3T4p/ekMYWRtGvVnqFDKDhzSQPZlO1Wux3D9WpgHAcNszoQf5dbioWGNzj+ji2j toQFTvyxGJtPoiK9xzQBuN/yVBbYydRJHlbbrVpWxmaoxbIYADyUWmF5A7iISic3vAfQbmbk+OZQi ey9Ej7kcpb2+Et9NHDq+cKiOYyP9ZopQuyVxPAP+RjyTv/kypUHaVAxT54wpgZU6U8Ir5aOOEZWuL 8GUWn3Cg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIZ-0051rl-01; Mon, 24 Jul 2023 17:24:43 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGa-00500M-1D; Mon, 24 Jul 2023 17:22:42 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nbAPqXypk09y2v8bOFfzhr1z/gmdDHiGn2HIleckPYbCf81a7/flZViIfkvxTLUQjKpIJkrvN2/QBfDICgQC8yCMwkGEuWJH63AX1lwDtmimdZC7LVrHO1dhVHXEmDbwD3f1THRaQyP3w71LXekhYV0MW3ORetMAJ3XkMG5zeQdJ2wD7JLVSFv+16TQ/q05QtYsBXr3LtDxivOtbj18aDrRJ9YVwEU3SPJpVOLbEYQ24mgTtog8Y5iGhy2EZNSgq8kdC8VrUZNq99xKr1NFnERCYV9m8V/YRR1/9wK4jQYGdyYUVYTTGi4bkzTbYgJx0E1TnPhkCzAlyb/5NjyS59Q== 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=P0slDXFYbJM//zyjPKYXqKC9rH+RXKJstRFeiCBm71E=; b=ETxxexAAwGbDJOCiAoipj5DyK3P2w1sUGPYa0lqnyJ1AUvNWF0hBATcsBeVzMFipwiN/+/oN1JQ2M03BSOIb01aeK7s7Eck5bM+DDAX6PQnAch/0a/mNiuRZQD8oyQSrEWyOI+Uh7JY5MCULPo4badt10vHWdjREQt+dxUZ1JjtWf5gkpTq+13cA1366aKMC6Eyf518406rl/yrTo5Ov6E/SyPvzIoxfsff13qFNNfvdlKi8lo0STk7nSBx9A2Gk7XS/aIV8qEWzp3O7KCcw/1UAbjIixmVxRlI+nz8kakQTJSFsq3tE2u8K40Mu/A5UZ9PtMU+gtIXRtLzLW6Ixnw== 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=P0slDXFYbJM//zyjPKYXqKC9rH+RXKJstRFeiCBm71E=; b=T8tKjnQSRAPVsgdXdID+LNateY1n0CaqaGifJTgCOAeRORpnAxGDoOm2Ii06X8Qh0iz2kTjWbtrvAz+TNW/S3pyBT5VkvRrRbIY0TFXElddnJXUiJo4QQAV9aDi74ccRDMiMtsnzzSiGiAqfCyhb1i94LbtyYsSUigAqb8FBXEQeb8BhhcsLRENx604ZgfmacCOr1CqdgaKjh5gu9LkNGK/6IAlpkl4WCz6+G9mgK4+AVGGS90SfTBpevFjPU27xBgH+2CJ+v1++XrlHqI8nHA+SxriE602DZWYGD+I207JqnIw3/rIBpzzhV4LHFmNzAEgcsjyCtKU1Jp/k2lEZ8g== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:26 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:26 +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 v5 13/25] iommu/omap: Implement an IDENTITY domain Date: Mon, 24 Jul 2023 14:22:03 -0300 Message-ID: <13-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0018.namprd03.prod.outlook.com (2603:10b6:208:2d::31) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: b805c3a9-79cf-4887-c04f-08db8c6a88c0 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: b805c3a9-79cf-4887-c04f-08db8c6a88c0 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:19.5081 (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: le/kmrH5b0CVWNzoWl8ShYsDdVQj600DWVTgtAXOX8L8ybyv0un3t5lFIjfHCi6G X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102240_481450_37D156DF X-CRM114-Status: GOOD ( 14.23 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org What omap does during omap_iommu_set_platform_dma() is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. This driver does not support IOMMU_DOMAIN_DMA, however it cannot be compiled on ARM64 either. Most likely it is fine to support dma-iommu.c Signed-off-by: Jason Gunthorpe --- drivers/iommu/omap-iommu.c | 21 ++++++++++++++++++--- 1 file changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 537e402f9bba97..34340ef15241bc 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1555,16 +1555,31 @@ static void _omap_iommu_detach_dev(struct omap_iommu_domain *omap_domain, omap_domain->dev = NULL; } -static void omap_iommu_set_platform_dma(struct device *dev) +static int omap_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { struct iommu_domain *domain = iommu_get_domain_for_dev(dev); - struct omap_iommu_domain *omap_domain = to_omap_domain(domain); + struct omap_iommu_domain *omap_domain; + if (domain == identity_domain || !domain) + return 0; + + omap_domain = to_omap_domain(domain); spin_lock(&omap_domain->lock); _omap_iommu_detach_dev(omap_domain, dev); spin_unlock(&omap_domain->lock); + return 0; } +static struct iommu_domain_ops omap_iommu_identity_ops = { + .attach_dev = omap_iommu_identity_attach, +}; + +static struct iommu_domain omap_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &omap_iommu_identity_ops, +}; + static struct iommu_domain *omap_iommu_domain_alloc(unsigned type) { struct omap_iommu_domain *omap_domain; @@ -1732,11 +1747,11 @@ static struct iommu_group *omap_iommu_device_group(struct device *dev) } static const struct iommu_ops omap_iommu_ops = { + .identity_domain = &omap_iommu_identity_domain, .domain_alloc = omap_iommu_domain_alloc, .probe_device = omap_iommu_probe_device, .release_device = omap_iommu_release_device, .device_group = omap_iommu_device_group, - .set_platform_dma_ops = omap_iommu_set_platform_dma, .pgsize_bitmap = OMAP_IOMMU_PGSIZES, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = omap_iommu_attach_dev, From patchwork Mon Jul 24 17:22:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325104 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A953CC001B0 for ; Mon, 24 Jul 2023 17:24:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tNprHmXnkMY6BXMXgOhuw0JZy2uNvntezNiCcGkYli8=; b=BuR10e0uGRvugBbAUu3uCWRA9G owLOZhsfYgOqYITeXqf93FtGm2mJBPT28tgq7Poh2ColTC8Don2MIaIFeR4rKhSlgK7JXOvoLRS3L ksrV9pxPCNVPBdFcaHy3l4aUx7NdDaYphB8MYCGbmVB9eb9NJTQO6yOI17n39TGOPAID8oftkJuOl gnSXsnlp4IqRAC39JFcLWLWt8qp2TYBriE7QfTCgVRXPmFo69Lfw32Rz+xDxEY0wDRbap4seBq7JP FDemsOrUPfz7w1BeeDTJhM3euxQjuSaIfAyTvVIfmh5y+f37MW7i0rmtOXYDji/0CoD1ZE94RdJbj XTDW2f5w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIN-0051fe-0H; Mon, 24 Jul 2023 17:24:31 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGX-00500M-2i; Mon, 24 Jul 2023 17:22:40 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=kauqUzz3/mWURQOtR6m/vQarKBtd3zgUk+3ih1UQZeCEi7kSXw5XM6rTEUMu4XGZUDk8/tFixJQISQUyW/pP188YMpHFj4cEvcly7+ShaCFFkTT40otPLjYxvYXdlwxaB6kYx6kYPfPMTxwXVKj7m2KyCyheN/s/QIKpP2pOHaXvMqof/oa98MIhedIIaAm7NXe40FsmqRR7SUFTcrDyWiPO0rN83+571lqOtnmZBZUa6lHXiJV/LSVX789Vl3z++QOtyxSVirsP4XYaBfGjUlLzcI8mZjWFqAkjrRzAw/++qzfYVW8YYwIOdA4r8oYo9+UZR/rXA+MD03l+fsATgg== 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=tNprHmXnkMY6BXMXgOhuw0JZy2uNvntezNiCcGkYli8=; b=huVbBV4aC0tOVon1H5mgKPnG9B3P5SUXmIcnuT5dH4S67uQBMn6gp5RO3MFRcFn32e8TVlOo3Fz4KJf27EB5TMgAZOARpTz0bdWVH5TlvcuqYctH8gg3s+W3AxfBrqgnEoV7PMvG3YxMPgH1aiiaNp+S7k5BFkqANibGSYjIxAhoBE9mbSC4KB6K/VlRqPKfH4eYhilY2lD0gtGaK98TbojVEIyfrEWHhN65NJTHn0ArqdWjb+TFCRw6VCdWCCZy4WjpPd/sdrLxb6qD16VemWRVHJZ7eXSHErxXx4ukZziygfoadJQc4ecKUGo9QUyDAqgTUxyNZKmW+uINqFTvAw== 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=tNprHmXnkMY6BXMXgOhuw0JZy2uNvntezNiCcGkYli8=; b=Uw3X+4LZWv+6gcFHwBEF/m464Sje1HQo2VbQx6uFMlQ1d0881vifCmz9+XkfBFRe6RgRmAzea3NVZ/RabaU/hK69T/Ll6MY+XWKNH/uEgnQgOLWEWMiTE2/7K2x3agkwGGEeOIwZdS+DG3jam2pcNBsyUylmOt7KuQW4MBcQyS3LKTzO4eoNSmZGNmUxoj2VUE9JnFbSu/9usJUYkkTTHDjSCfSUFpMuacSiExGdtEN0pFuYvHEJifPqFkUYJRJBzrQcu3r0PYfwRLi+ZXYkiCX/FkLBncsQHk5VgpdaVkAOUZxDhKwrjQBpFRPxJtjsiCYW4dLZ0znhvT+/ge7iHA== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:25 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:25 +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 v5 14/25] iommu/msm: Implement an IDENTITY domain Date: Mon, 24 Jul 2023 14:22:04 -0300 Message-ID: <14-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0023.namprd22.prod.outlook.com (2603:10b6:208:238::28) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: d0c8e12d-4e45-48ba-3a35-08db8c6a8898 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: d0c8e12d-4e45-48ba-3a35-08db8c6a8898 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:19.0520 (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: mQIed9KYYg3yklCzTIbCPGqU3zR/VH58nhoma018CNLIAj+ERsYxGojuVphyMpr1 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102238_099356_810D032A X-CRM114-Status: GOOD ( 14.88 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org What msm does during omap_iommu_set_platform_dma() is actually putting the iommu into identity mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. This driver does not support IOMMU_DOMAIN_DMA, however it cannot be compiled on ARM64 either. Most likely it is fine to support dma-iommu.c Signed-off-by: Jason Gunthorpe --- drivers/iommu/msm_iommu.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 79d89bad5132b7..26ed81cfeee897 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -443,15 +443,20 @@ static int msm_iommu_attach_dev(struct iommu_domain *domain, struct device *dev) return ret; } -static void msm_iommu_set_platform_dma(struct device *dev) +static int msm_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) { struct iommu_domain *domain = iommu_get_domain_for_dev(dev); - struct msm_priv *priv = to_msm_priv(domain); + struct msm_priv *priv; unsigned long flags; struct msm_iommu_dev *iommu; struct msm_iommu_ctx_dev *master; - int ret; + int ret = 0; + if (domain == identity_domain || !domain) + return 0; + + priv = to_msm_priv(domain); free_io_pgtable_ops(priv->iop); spin_lock_irqsave(&msm_iommu_lock, flags); @@ -468,8 +473,18 @@ static void msm_iommu_set_platform_dma(struct device *dev) } fail: spin_unlock_irqrestore(&msm_iommu_lock, flags); + return ret; } +static struct iommu_domain_ops msm_iommu_identity_ops = { + .attach_dev = msm_iommu_identity_attach, +}; + +static struct iommu_domain msm_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &msm_iommu_identity_ops, +}; + static int msm_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t pa, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -675,10 +690,10 @@ irqreturn_t msm_iommu_fault_handler(int irq, void *dev_id) } static struct iommu_ops msm_iommu_ops = { + .identity_domain = &msm_iommu_identity_domain, .domain_alloc = msm_iommu_domain_alloc, .probe_device = msm_iommu_probe_device, .device_group = generic_device_group, - .set_platform_dma_ops = msm_iommu_set_platform_dma, .pgsize_bitmap = MSM_IOMMU_PGSIZES, .of_xlate = qcom_iommu_of_xlate, .default_domain_ops = &(const struct iommu_domain_ops) { From patchwork Mon Jul 24 17:22:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325113 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 817B8C04A94 for ; Mon, 24 Jul 2023 17:25:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=O+5AH82XpyWlIubRw249RGZn5jsf3GWzubn9/zsOg2Q=; b=qOdJ1/L7NHAB3ertskUcplZm6F PLPX4R1m3vgseqSU0vAMUswgLbC85gSKMcL6vyH6WoUYTSKuNBioJIgLx9GUQbc2O/MVYDaDCBuy1 mXXUwqFc1B7gHu1q1NzlJNpyGAtLT3aNszS822vBbTzY5ErbOOfYtVn0iuoQwZGhNwb/oiatcPYYi qppIc7EQ+eOFw3m4OgYmL62Hz5xVSJVTv+JzKvVnyq1id+JuSo3d2Cr9wIjtC2TiBtHciiad5ieND lkXF1Yxxn27WEFOeTPvgWZgbRWzKGPj36tsArIcwxDkvOSJV9vhbtqCMKnBd+Enj81QAchHNgeCD2 owFeQnhg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIv-0052El-03; Mon, 24 Jul 2023 17:25:05 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGc-00500M-1A; Mon, 24 Jul 2023 17:22:45 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ARU8udxMWHwY08skJM1J3D4+tNPTbmQCWW18OupVsivF+dM7SjBxs0p76IGsDFhu3UNS/eEGTJDWjFneFacEd1NdJWfcKZD/ZtsW/3KlHIbyDCrvK7cU/vkYi3Iu0JrS7WQkZQqJrBxaRBX5FYXwpWIDbi+1rw0VNdMgjMFxHZ2/DtGqcVQrsslf4i6RI5+Wo1tpd8vLroAvOadiiGybedO48fU0uJunIopWduVHztXEs++AiD85TYP0Vbd5IZ6RQFXGGZhLCT1gmNjjQP8bt/SXq7pp3gRTq+4Duse6S1LYbA5BIIwjmwGVCP6tO4WAvDeXmcToqCCJP+2BXkPv7g== 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=O+5AH82XpyWlIubRw249RGZn5jsf3GWzubn9/zsOg2Q=; b=I+9TrE4vqQ1KUTD4tDYtYn4fLQ7dR2VefwEqjv6aBjBJtfdmReQVzhbNMSq7U9z/qAqdxqSVm/cqMf7Y0rM4APOoCPF0zIVzVocynnej6TQn1T+vHQzFGzfwhC86uski2h60cMAJ3C5Kcbd4MaVvhFOe2lAMqWtYzlpiqww59dlgkrIK/zQNkwu+lcDJhzYnjiKvpEIZNLV1c/eP1AdwIk6Ac9hUMOH0r2NHK/CYxyWN36sX5Po1dkUXvZTSgRdpkhIYXMDAN2hKv8H8EHes7jFHdcOZJ6oGyO36VRvz6ldsR3rJIV4zyg96pYyzdb+mPdEXiHO8x7RPhawpoqMXWg== 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=O+5AH82XpyWlIubRw249RGZn5jsf3GWzubn9/zsOg2Q=; b=i1vAe3YaiyTBH9mhypo4AAeYBfuDiVtyPe4Wy6IcKv7+hmN9e0kDnJjHRGDz/3d3GZNvUUTS2AU2Rgwnpq0hhkS7pTA8wKIj3wutetwLNbQDPGc+T5yCYJ4riojFSsjOWayjt8Q2mnfR+qxnvEq1N226lxHZUV5cs+O/becUm3jD3QofpJzPd0YocfIgr2DXusVxBd8x6DNiXtPXOoXfGTkkh5BiDqAywvVVzliuTVneZiOsArzSU22YgNqhEDoOfubx7v/u+mlmvks9SMyohK0X7sNdWCUsoto2ADuc3p0kqcORDmawafITXXKrF/99I4i+nwZ+uco9zGP8A8+Kqw== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:27 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:27 +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 v5 15/25] iommufd/selftest: Make the mock iommu driver into a real driver Date: Mon, 24 Jul 2023 14:22:05 -0300 Message-ID: <15-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0035.namprd03.prod.outlook.com (2603:10b6:208:2d::48) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 9edc1748-60a5-4845-5823-08db8c6a88fc 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(30864003)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 9edc1748-60a5-4845-5823-08db8c6a88fc X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:19.7088 (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: UPGdLx19ZcybUvkYq93D/DDWVjbAVpw1tGKV8+tuDkN4i0AZz3qJKQ94RHZB9Vlb X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102242_450298_60E13E80 X-CRM114-Status: GOOD ( 27.24 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org I've avoided doing this because there is no way to make this happen without an intrusion into the core code. Up till now this has avoided needing the core code's probe path with some hackery - but now that default domains are becoming mandatory it is unavoidable. The core probe path must be run to set the default_domain, only it can do it. Without a default domain iommufd can't use the group. Make it so that iommufd selftest can create a real iommu driver and bind it only to is own private bus. Add iommu_device_register_bus() as a core code helper to make this possible. It simply sets the right pointers and registers the notifier block. The mock driver then works like any normal driver should, with probe triggered by the bus ops When the bus->iommu_ops stuff is fully unwound we can probably do better here and remove this special case. Remove set_platform_dma_ops from selftest and make it use a BLOCKED default domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/iommu-priv.h | 16 +++ drivers/iommu/iommu.c | 43 ++++++++ drivers/iommu/iommufd/iommufd_private.h | 5 +- drivers/iommu/iommufd/main.c | 8 +- drivers/iommu/iommufd/selftest.c | 141 +++++++++++++----------- 5 files changed, 144 insertions(+), 69 deletions(-) create mode 100644 drivers/iommu/iommu-priv.h diff --git a/drivers/iommu/iommu-priv.h b/drivers/iommu/iommu-priv.h new file mode 100644 index 00000000000000..1cbc04b9cf7297 --- /dev/null +++ b/drivers/iommu/iommu-priv.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. + */ +#ifndef __IOMMU_PRIV_H +#define __IOMMU_PRIV_H + +#include + +int iommu_device_register_bus(struct iommu_device *iommu, + const struct iommu_ops *ops, struct bus_type *bus, + struct notifier_block *nb); +void iommu_device_unregister_bus(struct iommu_device *iommu, + struct bus_type *bus, + struct notifier_block *nb); + +#endif diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index a1a93990b3a211..7fae866af0db7a 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -36,6 +36,7 @@ #include "dma-iommu.h" #include "iommu-sva.h" +#include "iommu-priv.h" static struct kset *iommu_group_kset; static DEFINE_IDA(iommu_group_ida); @@ -290,6 +291,48 @@ void iommu_device_unregister(struct iommu_device *iommu) } EXPORT_SYMBOL_GPL(iommu_device_unregister); +#if IS_ENABLED(CONFIG_IOMMUFD_TEST) +void iommu_device_unregister_bus(struct iommu_device *iommu, + struct bus_type *bus, + struct notifier_block *nb) +{ + bus_unregister_notifier(bus, nb); + iommu_device_unregister(iommu); +} +EXPORT_SYMBOL_GPL(iommu_device_unregister_bus); + +/* + * Register an iommu driver against a single bus. This is only used by iommufd + * selftest to create a mock iommu driver. The caller must provide + * some memory to hold a notifier_block. + */ +int iommu_device_register_bus(struct iommu_device *iommu, + const struct iommu_ops *ops, struct bus_type *bus, + struct notifier_block *nb) +{ + int err; + + iommu->ops = ops; + nb->notifier_call = iommu_bus_notifier; + err = bus_register_notifier(bus, nb); + if (err) + return err; + + spin_lock(&iommu_device_lock); + list_add_tail(&iommu->list, &iommu_device_list); + spin_unlock(&iommu_device_lock); + + bus->iommu_ops = ops; + err = bus_iommu_probe(bus); + if (err) { + iommu_device_unregister_bus(iommu, bus, nb); + return err; + } + return 0; +} +EXPORT_SYMBOL_GPL(iommu_device_register_bus); +#endif + static struct dev_iommu *dev_iommu_get(struct device *dev) { struct dev_iommu *param = dev->iommu; diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index b38e67d1988bdb..368f66c63a239a 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -303,7 +303,7 @@ extern size_t iommufd_test_memory_limit; void iommufd_test_syz_conv_iova_id(struct iommufd_ucmd *ucmd, unsigned int ioas_id, u64 *iova, u32 *flags); bool iommufd_should_fail(void); -void __init iommufd_test_init(void); +int __init iommufd_test_init(void); void iommufd_test_exit(void); bool iommufd_selftest_is_mock_dev(struct device *dev); #else @@ -316,8 +316,9 @@ static inline bool iommufd_should_fail(void) { return false; } -static inline void __init iommufd_test_init(void) +static inline int __init iommufd_test_init(void) { + return 0; } static inline void iommufd_test_exit(void) { diff --git a/drivers/iommu/iommufd/main.c b/drivers/iommu/iommufd/main.c index 3fbe636c3d8a69..042d45cc0b1c0d 100644 --- a/drivers/iommu/iommufd/main.c +++ b/drivers/iommu/iommufd/main.c @@ -437,8 +437,14 @@ static int __init iommufd_init(void) if (ret) goto err_misc; } - iommufd_test_init(); + ret = iommufd_test_init(); + if (ret) + goto err_vfio_misc; return 0; + +err_vfio_misc: + if (IS_ENABLED(CONFIG_IOMMUFD_VFIO_CONTAINER)) + misc_deregister(&vfio_misc_dev); err_misc: misc_deregister(&iommu_misc_dev); return ret; diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 74c2076105d486..5433c9c545526d 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -9,14 +9,17 @@ #include #include #include +#include #include +#include "../iommu-priv.h" #include "io_pagetable.h" #include "iommufd_private.h" #include "iommufd_test.h" static DECLARE_FAULT_ATTR(fail_iommufd); static struct dentry *dbgfs_root; +static struct platform_device *selftest_iommu_dev; size_t iommufd_test_memory_limit = 65536; @@ -108,10 +111,6 @@ struct selftest_obj { }; }; -static void mock_domain_blocking_free(struct iommu_domain *domain) -{ -} - static int mock_domain_nop_attach(struct iommu_domain *domain, struct device *dev) { @@ -119,7 +118,6 @@ static int mock_domain_nop_attach(struct iommu_domain *domain, } static const struct iommu_domain_ops mock_blocking_ops = { - .free = mock_domain_blocking_free, .attach_dev = mock_domain_nop_attach, }; @@ -268,20 +266,26 @@ static bool mock_domain_capable(struct device *dev, enum iommu_cap cap) return cap == IOMMU_CAP_CACHE_COHERENCY; } -static void mock_domain_set_plaform_dma_ops(struct device *dev) +static struct iommu_device mock_iommu_device = { +}; + +static struct iommu_device *mock_probe_device(struct device *dev) { - /* - * mock doesn't setup default domains because we can't hook into the - * normal probe path - */ + return &mock_iommu_device; } static const struct iommu_ops mock_ops = { + /* + * IOMMU_DOMAIN_BLOCKED cannot be returned from def_domain_type() + * because it is zero. + */ + .default_domain = &mock_blocking_domain, .owner = THIS_MODULE, .pgsize_bitmap = MOCK_IO_PAGE_SIZE, .domain_alloc = mock_domain_alloc, .capable = mock_domain_capable, - .set_platform_dma_ops = mock_domain_set_plaform_dma_ops, + .device_group = generic_device_group, + .probe_device = mock_probe_device, .default_domain_ops = &(struct iommu_domain_ops){ .free = mock_domain_free, @@ -292,10 +296,6 @@ static const struct iommu_ops mock_ops = { }, }; -static struct iommu_device mock_iommu_device = { - .ops = &mock_ops, -}; - static inline struct iommufd_hw_pagetable * get_md_pagetable(struct iommufd_ucmd *ucmd, u32 mockpt_id, struct mock_iommu_domain **mock) @@ -316,22 +316,29 @@ get_md_pagetable(struct iommufd_ucmd *ucmd, u32 mockpt_id, return hwpt; } -static struct bus_type iommufd_mock_bus_type = { - .name = "iommufd_mock", - .iommu_ops = &mock_ops, +struct mock_bus_type { + struct bus_type bus; + struct notifier_block nb; }; +static struct mock_bus_type iommufd_mock_bus_type = { + .bus = { + .name = "iommufd_mock", + }, +}; + +static atomic_t mock_dev_num; + static void mock_dev_release(struct device *dev) { struct mock_dev *mdev = container_of(dev, struct mock_dev, dev); + atomic_dec(&mock_dev_num); kfree(mdev); } static struct mock_dev *mock_dev_create(void) { - struct iommu_group *iommu_group; - struct dev_iommu *dev_iommu; struct mock_dev *mdev; int rc; @@ -341,51 +348,18 @@ static struct mock_dev *mock_dev_create(void) device_initialize(&mdev->dev); mdev->dev.release = mock_dev_release; - mdev->dev.bus = &iommufd_mock_bus_type; - - iommu_group = iommu_group_alloc(); - if (IS_ERR(iommu_group)) { - rc = PTR_ERR(iommu_group); - goto err_put; - } + mdev->dev.bus = &iommufd_mock_bus_type.bus; rc = dev_set_name(&mdev->dev, "iommufd_mock%u", - iommu_group_id(iommu_group)); + atomic_inc_return(&mock_dev_num)); if (rc) - goto err_group; - - /* - * The iommu core has no way to associate a single device with an iommu - * driver (heck currently it can't even support two iommu_drivers - * registering). Hack it together with an open coded dev_iommu_get(). - * Notice that the normal notifier triggered iommu release process also - * does not work here because this bus is not in iommu_buses. - */ - mdev->dev.iommu = kzalloc(sizeof(*dev_iommu), GFP_KERNEL); - if (!mdev->dev.iommu) { - rc = -ENOMEM; - goto err_group; - } - mutex_init(&mdev->dev.iommu->lock); - mdev->dev.iommu->iommu_dev = &mock_iommu_device; + goto err_put; rc = device_add(&mdev->dev); if (rc) - goto err_dev_iommu; - - rc = iommu_group_add_device(iommu_group, &mdev->dev); - if (rc) - goto err_del; - iommu_group_put(iommu_group); + goto err_put; return mdev; -err_del: - device_del(&mdev->dev); -err_dev_iommu: - kfree(mdev->dev.iommu); - mdev->dev.iommu = NULL; -err_group: - iommu_group_put(iommu_group); err_put: put_device(&mdev->dev); return ERR_PTR(rc); @@ -393,11 +367,7 @@ static struct mock_dev *mock_dev_create(void) static void mock_dev_destroy(struct mock_dev *mdev) { - iommu_group_remove_device(&mdev->dev); - device_del(&mdev->dev); - kfree(mdev->dev.iommu); - mdev->dev.iommu = NULL; - put_device(&mdev->dev); + device_unregister(&mdev->dev); } bool iommufd_selftest_is_mock_dev(struct device *dev) @@ -443,9 +413,14 @@ static int iommufd_test_mock_domain(struct iommufd_ucmd *ucmd, /* Userspace must destroy the device_id to destroy the object */ cmd->mock_domain.out_hwpt_id = pt_id; cmd->mock_domain.out_stdev_id = sobj->obj.id; + rc = iommufd_ucmd_respond(ucmd, sizeof(*cmd)); + if (rc) + goto out_detach; iommufd_object_finalize(ucmd->ictx, &sobj->obj); - return iommufd_ucmd_respond(ucmd, sizeof(*cmd)); + return 0; +out_detach: + iommufd_device_detach(idev); out_unbind: iommufd_device_unbind(idev); out_mdev: @@ -992,15 +967,49 @@ bool iommufd_should_fail(void) return should_fail(&fail_iommufd, 1); } -void __init iommufd_test_init(void) +int __init iommufd_test_init(void) { + struct platform_device_info pdevinfo = { + .name = "iommufd_selftest_iommu", + }; + int rc; + dbgfs_root = fault_create_debugfs_attr("fail_iommufd", NULL, &fail_iommufd); - WARN_ON(bus_register(&iommufd_mock_bus_type)); + + selftest_iommu_dev = platform_device_register_full(&pdevinfo); + if (IS_ERR(selftest_iommu_dev)) { + rc = PTR_ERR(selftest_iommu_dev); + goto err_dbgfs; + } + + rc = bus_register(&iommufd_mock_bus_type.bus); + if (rc) + goto err_platform; + + mock_iommu_device.dev = &selftest_iommu_dev->dev; + rc = iommu_device_register_bus(&mock_iommu_device, &mock_ops, + &iommufd_mock_bus_type.bus, + &iommufd_mock_bus_type.nb); + if (rc) + goto err_bus; + return 0; + +err_bus: + bus_unregister(&iommufd_mock_bus_type.bus); +err_platform: + platform_device_del(selftest_iommu_dev); +err_dbgfs: + debugfs_remove_recursive(dbgfs_root); + return rc; } void iommufd_test_exit(void) { + iommu_device_unregister_bus(&mock_iommu_device, + &iommufd_mock_bus_type.bus, + &iommufd_mock_bus_type.nb); + bus_unregister(&iommufd_mock_bus_type.bus); + platform_device_del(selftest_iommu_dev); debugfs_remove_recursive(dbgfs_root); - bus_unregister(&iommufd_mock_bus_type); } From patchwork Mon Jul 24 17:22:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325100 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E3A10C001DF for ; Mon, 24 Jul 2023 17:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=WmgAxbbM05aXl6a8scPVaBLDDiCsDqadI3kHJwxmGn0=; b=fIzoxprp7FMpP3mg9Z7YinH/us 31lB+td8MmftzKGMJtvwFPlN2NiIIbM8Tzw139bmMkXDhVTMX05HIYH/5d7tqY+xsJzJjvLc8KjzZ eamxtV2fGy04hb6hL31YpWuntTgaxLPTYMXWTier9OnhzQnwYpzeFcqgSe+DEmQMWxdZfXuEK+sCy PrDqvrW8Okynof6LMoL6RptDBopkRqEU3QJYOrb92hQ6cNNyylBwO8Ztz6n1J+PovCfZjMyNmU0xO qpeC1TdOUkg6926ZCSC7VxnMls7O9O1qhKm7waixy6+4iddg8SE7+dDOelu2AxVF77RMdWC81xnG7 kFyzXIuw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHi-0051AM-1v; Mon, 24 Jul 2023 17:23:50 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGV-004zzV-0k; Mon, 24 Jul 2023 17:22:37 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=dL1iV8eG+5pr6mrOoHm3+xAfxeIcmFfRCrpvE8zZY6xrSTWjhVLX05k+vTZlKvGN5Mxqcb962BEU9dLlppN46+Ik0ADsaq/G5dITqDSW/YxO+dLNi1612dqKbhucXuhpG7oYf7QFFhbF+ixWabJ4kVatJO8srIDnwzayreT6OoJub5KF+j0ss8W/udtM2ylGib2LebVUw7rsyyiURabsMem6Pri9qjlhSFMCrlQYBenwaBoR4l0zrZX5T0LiyGJMJUVIdlFSU6P/YrngwE0e5ROzYq1CxF3FLIPx+QVWtNAnBbI4whAX2QLZuRZ2SbtMHX8RtJaiL6dGZ605fzefvA== 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=WmgAxbbM05aXl6a8scPVaBLDDiCsDqadI3kHJwxmGn0=; b=LsAXpT+zdDbafZAyYI1mnMuacNLOWWRHhjOF2+xtSmn9gjZqVHzOo5TKUovC3u3zfDQVe63Dvevvy/WpjbZ5S9J4xLaUn10WnXYj9YtaMiPpFLDFYiaVfmscuanblc3Z/LjZC7BZfrTZ9IJCWh4+U0anjIWLf8rQNelv9QgG5fXWjsxqNwn6l09pleeZI/sULBgIbfVgDCdqn3wn+yQAUzN6PDN2ZCNFNBSFw07uEdDLNVqzi8LMmiDuNJpfmU9Miw9vLDTjV/7j4q5nz2SV+ZEF7ntclF65V2KP7lUo+BMc5slwJOAOc/aWJ0KgqJd3ozJzLmBqdyz7P9JNpqHhvA== 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=WmgAxbbM05aXl6a8scPVaBLDDiCsDqadI3kHJwxmGn0=; b=tLuxcUkQz/KHd2hs1AZe7zaOoLaofTvId+1y/eMtcp2yx+dxwoFRcRm0Vtx+o4ZZBRPDQ2xadvkTPOAA+ktzP/SpMhw/a+ZHazpkti9uKsooE0+GXO4OTSSUW50Y7Syxy/CuUo5MdjdbAdbUtuW56eTm0b1gygFhaoHjaXVaEBLOjq8fNqZGb6MDHkOcGxaLhBfxaq7unnX4ve0ibdQyS6VWES1O1MPhoxRhvzG6mihIQquZi/pSqZKc10YFBzUpBZMASThDOv12+iToZ12VzMT4T/AhFyy3iZzhw8PXNKFpOJFLWSpHUjchXB/y2xagRcLg4CrQs5YyRwiq1QFQVQ== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:20 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:20 +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 v5 16/25] iommu: Remove ops->set_platform_dma_ops() Date: Mon, 24 Jul 2023 14:22:06 -0300 Message-ID: <16-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0185.namprd13.prod.outlook.com (2603:10b6:208:2be::10) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: 76760396-2257-498f-c8af-08db8c6a8796 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: louLdhnudlEwPBJCaLj/zd8leuVmKPtTYBZ8Trjx1TJrI66lFUU2lYJCGmuLD0DQS5aoqbR7OYFdhEj6jwGh7zVcdBwg+NOZ6Lg+QbBT8AhK0n7zFoBpjyOj6agawACu0zhZ9O20o+2uy8emdkkBlAMQvH63iu2oC24yP/5CppLYozBbcrJ5hj0YRWemIeT7pOFOgh01q0R+AQm164zPs49R75e6+GgckAMg5Wl9Mbua+5zhuQB/oVVGFe08lzCrpTAEIypIH0X4JjDvvh3vXhzgAObOf5Ss5pg/aRLi/I/MAypp+4pPpFL5psxH+oM37W5JK5kYg322YSnDPLW3E0/jH/GmoDM7PLfJmHZ7pE/e91ETHmErARFFNUtEFklOnBYq5YZQmhjIl8mYdHXksvTGYPRNZSPE6IF1D1nrfafk23FUTd/KufF7B/XR1MwScfedDqxV17tMkRBX1lalc+P+px4kImLl4z3oXPTWgvuPp2SnTo/MTCVvxI+o7ek7Nz+fmLRcLguEGlinx3AUALMNCyvpnam7O3MPFjOkOUYOxnvnKMebzgRA8e40cWYtTKFj1TqnfYpAYLnHXmZsXcD5arGWEOADBoaLNeafX6c= 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005);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: 76760396-2257-498f-c8af-08db8c6a8796 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.3596 (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: adnhGIs3fQ/dHLq5c0l8OF7WSeTL82w1PJJJ+Hds1TlbWMxmG5Uf51mGSlrDHLdh X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102235_276073_3C06A081 X-CRM114-Status: GOOD ( 20.79 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org All drivers are now using IDENTITY or PLATFORM domains for what this did, we can remove it now. It is no longer possible to attach to a NULL domain. Tested-by: Heiko Stuebner Tested-by: Niklas Schnelle Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 30 +++++------------------------- include/linux/iommu.h | 4 ---- 2 files changed, 5 insertions(+), 29 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 7fae866af0db7a..dada2c00d78ca4 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2264,21 +2264,8 @@ static int __iommu_group_set_domain_internal(struct iommu_group *group, if (group->domain == new_domain) return 0; - /* - * New drivers should support default domains, so set_platform_dma() - * op will never be called. Otherwise the NULL domain represents some - * platform specific behavior. - */ - if (!new_domain) { - for_each_group_device(group, gdev) { - const struct iommu_ops *ops = dev_iommu_ops(gdev->dev); - - if (!WARN_ON(!ops->set_platform_dma_ops)) - ops->set_platform_dma_ops(gdev->dev); - } - group->domain = NULL; - return 0; - } + if (WARN_ON(!new_domain)) + return -EINVAL; /* * Changing the domain is done by calling attach_dev() on the new @@ -2314,19 +2301,15 @@ static int __iommu_group_set_domain_internal(struct iommu_group *group, */ last_gdev = gdev; for_each_group_device(group, gdev) { - const struct iommu_ops *ops = dev_iommu_ops(gdev->dev); - /* - * If set_platform_dma_ops is not present a NULL domain can - * happen only for first probe, in which case we leave - * group->domain as NULL and let release clean everything up. + * A NULL domain can happen only for first probe, in which case + * we leave group->domain as NULL and let release clean + * everything up. */ if (group->domain) WARN_ON(__iommu_device_set_domain( group, gdev->dev, group->domain, IOMMU_SET_DOMAIN_MUST_SUCCEED)); - else if (ops->set_platform_dma_ops) - ops->set_platform_dma_ops(gdev->dev); if (gdev == last_gdev) break; } @@ -2940,9 +2923,6 @@ static int iommu_setup_default_domain(struct iommu_group *group, /* * There are still some drivers which don't support default domains, so * we ignore the failure and leave group->default_domain NULL. - * - * We assume that the iommu driver starts up the device in - * 'set_platform_dma_ops' mode if it does not support default domains. */ dom = iommu_group_alloc_default_domain(group, req_type); if (!dom) { diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 87aebba474e093..df54066c262db4 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -237,9 +237,6 @@ struct iommu_iotlb_gather { * @release_device: Remove device from iommu driver handling * @probe_finalize: Do final setup work after the device is added to an IOMMU * group and attached to the groups domain - * @set_platform_dma_ops: Returning control back to the platform DMA ops. This op - * is to support old IOMMU drivers, new drivers should use - * default domains, and the common IOMMU DMA ops. * @device_group: find iommu group for a particular device * @get_resv_regions: Request list of reserved regions for a device * @of_xlate: add OF master IDs to iommu grouping @@ -271,7 +268,6 @@ struct iommu_ops { struct iommu_device *(*probe_device)(struct device *dev); void (*release_device)(struct device *dev); void (*probe_finalize)(struct device *dev); - void (*set_platform_dma_ops)(struct device *dev); struct iommu_group *(*device_group)(struct device *dev); /* Request/Free a list of reserved regions for a device */ From patchwork Mon Jul 24 17:22:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325112 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id A37E7C001DF for ; Mon, 24 Jul 2023 17:25:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=xHnIih7z1NsYVt0Tt2cxqsqWFhB4lKuFjuoGFmx4KEU=; b=PRvoIvB/1H7QLjJhQ7AA2dGhlP Aw46MA5dzzLEInkToXyyycTba34qZ048Kq+mzQ5uTvyKhqrkGXQ7Gm2yEClthGrULfcBN707maEjF iX3wo/HBm31yOfzJJHvrgpOtbXKeOjE3Rk2Igxu63PXZSQrOIaLivG3dqZmEHuTBCINrs3kowszqd G1S+c0oinyTA23XKwLSp9JIH9zWVy1HJ6sJGc1Xo9aMjK/0h1laqtodzC1pU7amGzMnlmBkkKAu91 +P0tSrQGtg2F7KhnfYzP0qWy8M7SWBI3clNFXp3uczwgIyql7m/o4BQi2rGHopEd8+Kieacqr914f mTfKQ7JQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIu-0052DU-0W; Mon, 24 Jul 2023 17:25:04 +0000 Received: from mail-mw2nam04on20605.outbound.protection.outlook.com ([2a01:111:f400:7e8c::605] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGd-005096-1h; Mon, 24 Jul 2023 17:22:45 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AKTqdWxnaWGWIfvfd0ZblD8ksY6xuOYhyu9V4g/1OnDV3h5uz04mMke0GbmuKhl2jeetdp9XfgsgRmEB8yg+OhftY4TvUE6BSPD9gyDOJPM9Hh7yp5nVZZHUF4QWXHX15IlDoCWkIHMAqr5iOO/YX/2vk4QKr0awl/AIE4geug9EFABQ7Ag26xp+zUJZZatWK6V1fD9QNeXuF7/3yMkpr7tinUiOCOawVIxEBC4Wa7H3U1aJNh2mAUNlO76CpP0VM6z98DgI8aTjrmPcV0Q7pVKRFB0PzQQmGIWOs2Ez5xe+101WiBP1xaQ8d2KLO2gLUhJyQY8YAwdnCqGhLuNtwg== 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=xHnIih7z1NsYVt0Tt2cxqsqWFhB4lKuFjuoGFmx4KEU=; b=in6joumP4T9PJ/Zm3F4gwx6DiyGqPKh/ZEpIN97DBICvRfLPXYMFmw7Jp0/bIEJjfqejmbAXU6lbVqHYngXG41WvVFfsRUCW+nR1WpAbN3r2MOkonR3quKIoasjnNz+GU+nGS1X2Wf3NteXWoAmc+i+QsVahXbxBd46i/yObpH446vsXlOoniqbH5/jWNrF4kpUW71ScrHECXBRzLQkokFWT65I9K26bFNX2IrzNLsR24DuhmOCiAe8jt2xjCgCkYq0lLPgopP/obtobY54G1Pozsg5Wv9Xq+eI0DHoPtQWuHG7KX/QJocsPIYNA3jNBXGmYUKGYHrh3DMhkMoeknw== 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=xHnIih7z1NsYVt0Tt2cxqsqWFhB4lKuFjuoGFmx4KEU=; b=Ax/8ecXdTo2xBgcZ02lnb5U8yH+X292I77q8dJljakTDrpObTbMPoCeuadqSe2fPPIh29up1egWGQBvn2mkyfsrOlDuTzhIDY9+fmLIdkOZNPKKGLrDPQcUUjhMsmQGBL17bShu4YeNt5PIPuxz0ve9fUexrAnSeOu4sWMpvs4QPDgKzNPF03HdemRl5CDPxeDSxb9S81AKVRkekCDfuJXab1+KyrCJvdSxM4YnN1OccOabSQIM606O2cibNXenXU7Eh3z75yFsfQY9Qvq89yzKTzF8hsQsmAWLHlBSZkcQYL1V2Bjd+XXKjbhEowLB7QmxWWOMBBQMS/yTqhUpZOg== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:28 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:28 +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 v5 17/25] iommu/qcom_iommu: Add an IOMMU_IDENTITIY_DOMAIN Date: Mon, 24 Jul 2023 14:22:07 -0300 Message-ID: <17-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0027.namprd22.prod.outlook.com (2603:10b6:208:238::32) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: f8f2ae72-57c9-41e5-fc2a-08db8c6a8988 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: f8f2ae72-57c9-41e5-fc2a-08db8c6a8988 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:20.6306 (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: RF46/EyTnGLqQn+sqaTimN/aSWpcsperwBj34XEmm+627NZW5QzpE7jN13hHEgM1 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102243_607561_17E16B2F X-CRM114-Status: GOOD ( 13.23 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This brings back the ops->detach_dev() code that commit 1b932ceddd19 ("iommu: Remove detach_dev callbacks") deleted and turns it into an IDENTITY domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 39 +++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c index a503ed758ec302..9d7b9d8b4386d4 100644 --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c @@ -387,6 +387,44 @@ static int qcom_iommu_attach_dev(struct iommu_domain *domain, struct device *dev return 0; } +static int qcom_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) +{ + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); + struct qcom_iommu_domain *qcom_domain; + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + struct qcom_iommu_dev *qcom_iommu = to_iommu(dev); + unsigned int i; + + if (domain == identity_domain || !domain) + return 0; + + qcom_domain = to_qcom_iommu_domain(domain); + if (WARN_ON(!qcom_domain->iommu)) + return -EINVAL; + + pm_runtime_get_sync(qcom_iommu->dev); + for (i = 0; i < fwspec->num_ids; i++) { + struct qcom_iommu_ctx *ctx = to_ctx(qcom_domain, fwspec->ids[i]); + + /* Disable the context bank: */ + iommu_writel(ctx, ARM_SMMU_CB_SCTLR, 0); + + ctx->domain = NULL; + } + pm_runtime_put_sync(qcom_iommu->dev); + return 0; +} + +static struct iommu_domain_ops qcom_iommu_identity_ops = { + .attach_dev = qcom_iommu_identity_attach, +}; + +static struct iommu_domain qcom_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &qcom_iommu_identity_ops, +}; + static int qcom_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -553,6 +591,7 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args) } static const struct iommu_ops qcom_iommu_ops = { + .identity_domain = &qcom_iommu_identity_domain, .capable = qcom_iommu_capable, .domain_alloc = qcom_iommu_domain_alloc, .probe_device = qcom_iommu_probe_device, From patchwork Mon Jul 24 17:22:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325099 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 081E0C00528 for ; Mon, 24 Jul 2023 17:23:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=tYlxcy3yMGsIVIlD8LPwPMp6KhU7POD+Z4J27TYymUI=; b=z/g3LeNQTnckgXiJ0EvfGRAIOA WOIG6vPTGjv+EQG/zJiVpRj6ff/TnMzvL5k8lPPlAGRI0RU7q4HM5UqR51ckVztwoniicfiOBTIxD 0+ELQ0wMYj7DAmwfb6XbZNEHc1/Ntj6aDa+fXlHJaGklOe4OaG+EgllbRiatTmhEU9si4iDrCXDLb pSGl3UXWzgPDrFMVxl70TWyF+64dsiMh1vadBEL1cJC0L4X0ydCzWPGY3mTNhi6pKwBy4tprcf82n 4sg/v9nLjPhfvMTTnSVC/BezWj1EDW18eXNmcL5/si4MjPb4loZrhApqLsQi1bwsNqlZrLQmJYc61 pbM+T45g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHb-00514d-2d; Mon, 24 Jul 2023 17:23:43 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGU-00500M-1g; Mon, 24 Jul 2023 17:22:35 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=IrsSniUx1g6YTJD0OW2/kHnhwO4XutiSeYEjzldV4Q1q3YVNKBwG1I0pofAU535421zQNMXPo6ko4CCmCE6PoM5Ls0WHkwQsOisO8iNPcGniaI3EAQI1FobwmoA2vDY8CTxEy847w2M+UjOExOtmDrn8D2IZ5PUAuxiqmV363L0tM8VaQZf5Z/MGVFV0haRDWI0n3+hA0/nGbGoUPhD3g9nWyWosHoaplMk8U2rBwar2/gKWsj/l8lZzHTlMz57CRPi8HEYwhZOQUDJ3iQMB2gBlTTWNlg38vNklAMZmuXY1BALr/StTsXGaDHV5nBiJS0r9EF/YYLAE8fwtUsXEyg== 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=tYlxcy3yMGsIVIlD8LPwPMp6KhU7POD+Z4J27TYymUI=; b=oVl6BD5nB6Ls4SLgtb6/OxW0DnNIUoLCfXu682uQ5WGe6fNoPB+eYuN8AyNdztEsJNJYqz4BWxVUHlXek/+nLB/qc1HCbFzAoA8QnGH9UTPxYoR8YL3bRSH/QNMJHxMnlxjRMHQnNPvmYwpgWRMjA49xv9v2BmM4KF54INl+leeVHhE05OJOtRp2SIsjqTebpMczrG92Fa4Ie0yt+KaTYNDU7xHqoIlNp6iqdgtM0il0mgWXm1q2PxrPOzRWtUSR0n4Zmq5MGb1u/cgErkd+o3VbP6LL/qFzDezwonrGXHYqJf3BmPn5fcgVOoSaNNDXfAi5OXJoRH7qzHLf843IpA== 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=tYlxcy3yMGsIVIlD8LPwPMp6KhU7POD+Z4J27TYymUI=; b=mFVbFOEZ+h3jhSy0y1MS1ELWCBq30ufLxpzcbglFlDZY7MObdbVrgKj9SXG4KSn4bSIzZzM1zmui+ursHd1gUMq3hfsvBzZM8aaxvHP33M+KaIvt7CqCeFssUDXMaJ/OqyVBKT7MRMZz9OKs+n4aaX+FcdjBcs2l8pATQTgdZoIF9N+l9axTH2kzcBi1rC9YSLxfG1swpnrSBXCjDn9GwVNdBWj6gM0mBWRJB5OiQ9Bsy5H+RUs6TSHYzKLcGr7344Xv3Xq/KaI/GhjGS42C+AShy5BrAUnBubgOYVrLGEZ7EYRN8rNUmHbx/3qCrIC/CNxnVwoL0itULVe7bRjKJQ== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:24 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:24 +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 v5 18/25] iommu/ipmmu: Add an IOMMU_IDENTITIY_DOMAIN Date: Mon, 24 Jul 2023 14:22:08 -0300 Message-ID: <18-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0007.namprd22.prod.outlook.com (2603:10b6:208:238::12) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: f9ca101f-9c4e-4a88-63cf-08db8c6a8880 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: f9ca101f-9c4e-4a88-63cf-08db8c6a8880 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.8551 (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: lnMUXvmrYt9+QqDbNtD3NkOupFvc8DD9SA7RjcxoVUpqZVuNYfu3JeU3k99O97tF X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102234_562903_970C2DB6 X-CRM114-Status: GOOD ( 13.75 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This brings back the ops->detach_dev() code that commit 1b932ceddd19 ("iommu: Remove detach_dev callbacks") deleted and turns it into an IDENTITY domain. Also reverts commit 584d334b1393 ("iommu/ipmmu-vmsa: Remove ipmmu_utlb_disable()") Signed-off-by: Jason Gunthorpe --- drivers/iommu/ipmmu-vmsa.c | 43 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 9f64c5c9f5b90a..de958e411a92e0 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -298,6 +298,18 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain, mmu->utlb_ctx[utlb] = domain->context_id; } +/* + * Disable MMU translation for the microTLB. + */ +static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain, + unsigned int utlb) +{ + struct ipmmu_vmsa_device *mmu = domain->mmu; + + ipmmu_imuctr_write(mmu, utlb, 0); + mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID; +} + static void ipmmu_tlb_flush_all(void *cookie) { struct ipmmu_vmsa_domain *domain = cookie; @@ -630,6 +642,36 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain, return 0; } +static int ipmmu_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) +{ + struct iommu_domain *io_domain = iommu_get_domain_for_dev(dev); + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + struct ipmmu_vmsa_domain *domain; + unsigned int i; + + if (io_domain == identity_domain || !io_domain) + return 0; + + domain = to_vmsa_domain(io_domain); + for (i = 0; i < fwspec->num_ids; ++i) + ipmmu_utlb_disable(domain, fwspec->ids[i]); + + /* + * TODO: Optimize by disabling the context when no device is attached. + */ + return 0; +} + +static struct iommu_domain_ops ipmmu_iommu_identity_ops = { + .attach_dev = ipmmu_iommu_identity_attach, +}; + +static struct iommu_domain ipmmu_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &ipmmu_iommu_identity_ops, +}; + static int ipmmu_map(struct iommu_domain *io_domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -848,6 +890,7 @@ static struct iommu_group *ipmmu_find_group(struct device *dev) } static const struct iommu_ops ipmmu_ops = { + .identity_domain = &ipmmu_iommu_identity_domain, .domain_alloc = ipmmu_domain_alloc, .probe_device = ipmmu_probe_device, .release_device = ipmmu_release_device, From patchwork Mon Jul 24 17:22:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325101 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 8D8E5C001DF for ; Mon, 24 Jul 2023 17:24:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=2PBD3BXOVWRc/f35qHZJJJCRX+RoW6GH1RDzoMlN1lo=; b=MpMJN1ox4CsrzBgl1S4ZU7Q9ur lYvyl3ksdZtyEZZoHX3RJD3qxh7jI/3XZCFbF5ACW8jtTNvcXd5bs8jpZEkc1I08OEvQ2p1A48iif 6In+exPl1CFr/7kWuGsllTS3JOz6/DnLdIPLofP+x4rr20OjBIfSNzJfKEp2+IH17snDhPAFTBMlb asQokP5WVfZytOHqK3OXDpFXD6217Cs0uo83oqi0xloRWD1fXcIufI1yXFLk9yDg4xisS7AjKXyE9 fyipGyAf2A0bKf4B3hySJFvnC77EzQ4OlEzXxUGOlQwKIrvQNUIW0SVLmz+9hd/qqeX508m/RHmvE WIEdOUPw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHr-0051GY-06; Mon, 24 Jul 2023 17:23:59 +0000 Received: from mail-mw2nam04on2060d.outbound.protection.outlook.com ([2a01:111:f400:7e8c::60d] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGW-00500M-0U; Mon, 24 Jul 2023 17:22:37 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=cpj0n2K196ZFLEmqV12KgnjGBkQL3A9DX+Qr7hYA2VxiXXugaf46KP5uHvppNJKbM1q4ylHAW8If1+iDb3XqPvvyaqVYafS0kiY2uVxRZeEDNPCEuMlqN6kLKEQ9S32o0av7N+0709GzIgr8sCouAC/b7Pu6Osz3//KHTa5TT5n44jdjA1DwPwfP8RKutHBA+gYsWSVhNyuC8FxRkzMek+HwZ7iw/MWXwBEyXEUcgG29SJWWz5IgRuIFXXQqhSfApmn7M/TLVDcayHF7LroUQdkNLZyFge8onO2duF7cic+xqNkcUGbzCFJxeTkEa6LXfvsIDyeZGJ5v/jSG0cE57Q== 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=2PBD3BXOVWRc/f35qHZJJJCRX+RoW6GH1RDzoMlN1lo=; b=K0vG8Ty/+kOuZu4bV0qrnBTNpC6TNEBsSk/7M8Jo3FCwPeSH2T2SV1KPrv4gYWlBQKGkwRe4o5hI6plajZGKZgumKCCqJezQSKvyPgfDKe9NIargE5XAlEO44HcQJFmCzKxk5mT4JCRkeJYaxl+TAJKTjx7XOR28vAQHbGFc6EneSy4xL/wc3b2PemLuoGCvtLj/DReOPM+hDIEqfv79CMRfgaRegSwE5oyV+mhEsfWBH+cfAIxIGrSJULs02oLWoONLUGhbc0oS64tOz+OwQFwIzO2U3NA2nOPt2G3d5zae0ROVxGbKZErvqX0yAa7A2X0b2wYOYFeN1o8EyqYvVQ== 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=2PBD3BXOVWRc/f35qHZJJJCRX+RoW6GH1RDzoMlN1lo=; b=h8vEvwYeXg2+M1OES+hGPYUn5Iw3VkOrh5bMIQttOFBf8bahd/2TP1jPKypqjDxFt39ybT+V03x/t2BUY1Mo5nV9vGD360+YCIP8uVjS2rZ6R4FyaTW9bS0/3BZdnUfcImbeRBHAzBqrN/npqHjZEzI31UEiA6VkWXvRCQk29vJEDXLpVjO702h6lfkwCeamN3/K26biyF1ZuWtsILsRXEsM7Dcq6NhlF+o/1Tgez8NXds0vykm0iqzHbBn+MaEBamfWU620VNNmjgbcT1duzznBJMZ/zXl/35jI0IE2RjxpDFY69YdRAW5nsiRDCxmq7AoOnn/XFTpKIuBl8quB8g== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:25 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:25 +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 v5 19/25] iommu/mtk_iommu: Add an IOMMU_IDENTITIY_DOMAIN Date: Mon, 24 Jul 2023 14:22:09 -0300 Message-ID: <19-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0013.namprd22.prod.outlook.com (2603:10b6:208:238::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_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 4b560a77-8dda-4cc4-137c-08db8c6a8891 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: ipcVVhd4OSYhyyhiAYCKrzN7XlUFlF1/v88VXvPl0lEUvmKHE0Xj+1/IG+BNu9Uio7DZDLwU2ny4CporFcfwB1TNpEwFg326dkhQJcBjxA3bhjP6lKfbK0xurwM7iGEPm6rzeURyy/bBUZYWejDxfX2RLj2Yaai//gBwBFOp27g2pXSeNm/O/q2KsgmP3K6fg2CMIcl0h573ZYBYdJAFSvHc/Sn+drefPnAOrt21JgBvVhOVzDn7sGTFUyOJ4peiJcgGbQ8wLxM1g469lnUFR/6Pmxb89seMre+wX4NcrttSaNFQFO5prxDT5Abwf+7wLuNqXvj9cpgHauwlMaHYFkZRlWR32F5aPsBtaHlK0FTfcRsJ6WEOQDJi6mmnxhmH8++ajxbdtY1UN2WZWpkyNXQOG19jeCHkvoSNQTMOt9ajyk3b/nlCtyoT3W9CoDsZmpUzJxU3qM2h7IewscZiXcgttC+0/m5OFdHbJD4bAyGtlbzIQNf2axwnDnl5CThPx+j4JR7fv4d3GI+oY4F0YDNrLG1ZmTG9V/T0CU6inxduqwDQQ8isx2e9hnBeJQNCDgtFL6eYEvoUJ5B5pTqTmU19FLQ6EetzCbvg0yxNzx0= 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 4b560a77-8dda-4cc4-137c-08db8c6a8891 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.9732 (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: rK6FNlbJ/5PlZOjFAm8w7vryH1Ph2psCwUbCr3E5tjBAy0/ndIUkWkEOmD6p0RfM X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102236_221904_D235D034 X-CRM114-Status: GOOD ( 10.33 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This brings back the ops->detach_dev() code that commit 1b932ceddd19 ("iommu: Remove detach_dev callbacks") deleted and turns it into an IDENTITY domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/mtk_iommu.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index e93906d6e112e8..fdb7f5162b1d64 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -753,6 +753,28 @@ static int mtk_iommu_attach_device(struct iommu_domain *domain, return ret; } +static int mtk_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) +{ + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); + struct mtk_iommu_data *data = dev_iommu_priv_get(dev); + + if (domain == identity_domain || !domain) + return 0; + + mtk_iommu_config(data, dev, false, 0); + return 0; +} + +static struct iommu_domain_ops mtk_iommu_identity_ops = { + .attach_dev = mtk_iommu_identity_attach, +}; + +static struct iommu_domain mtk_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &mtk_iommu_identity_ops, +}; + static int mtk_iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -972,6 +994,7 @@ static void mtk_iommu_get_resv_regions(struct device *dev, } static const struct iommu_ops mtk_iommu_ops = { + .identity_domain = &mtk_iommu_identity_domain, .domain_alloc = mtk_iommu_domain_alloc, .probe_device = mtk_iommu_probe_device, .release_device = mtk_iommu_release_device, From patchwork Mon Jul 24 17:22:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325106 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6FD88C001DF for ; Mon, 24 Jul 2023 17:24:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=O8cvW84AteYGsHkKJoxDmgX1gvmm/kLqlAnWOZtGp1s=; b=fmixaojEaGUhxqTJMY8pnH6uI2 cH+ov7TFYmTcHdInNYCB5cip0hSOoBQ7RDF0y+GXRZbYpllpzi5bxd0vosGOnqAI8ep+Zs05yhi61 ISY5+kyyupuDGUiSxFAbZDycXFT3aRueV0ZhhepEOuI+z7/o5zrMH5uj0BSMKjVMd+h8D8qp8J1QI c6bi7SyEW1x9Ugd9Xkjd3mC1Vl0h4UuVgeiMoGt7iUz6pVkoV2jefSk47jIo052Dz5gT9OJZYa8YT UiKR6XC20/Vh2vB6nex/hvS8H0OaJN1sNlmUcGnKKnHbOzpk569cO1uNcvEX6JLWmV542DBqca0OG O1zgdhHg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIO-0051hY-34; Mon, 24 Jul 2023 17:24:32 +0000 Received: from mail-mw2nam04on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e8c::62c] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGY-00508i-0J; Mon, 24 Jul 2023 17:22:40 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YX9TSnfvmvRfxCWuEdHc8zUkfch/BrDC1dKhjLy9eUkqBO0AR9KZal9uKpUGkQYdh1hEQAGemC89vj2zeMUAi3I4SuYtGF0e71HeGJOM72nj1zlb5GklnRZv7Xgt7w7U1WfqN5OpglAxDzOZ4WAQvZZ5UY5Afza1bA3Z9vObYjgSf+7s3d/6TthuoUZQx5LxenQFtI/7HAvq6doDR51+WZiZPzHDNvcpuwuHCgiCRqOuAjBjg0qB4hQNWWb08TPa6tBI0ZYcZhVO+9/FjAd+ChJMIhNbSBd5DxfFo17UjmOkLrXCP61egqVITPtGXYA0VxvfrjEFpkqD2mJa7yffHQ== 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=GeltFdPGkX/WCOS+XffqKwlKAvWwZqqXE/ItZTjIyk5wF7FNSiiDdZ9MmNUUhQRitWv6Yp+2Qts1RQuwb98ccbfoqmOOpQesDTX8WDXasW1oP2P3/qdzKUg3p1fTTQ1lSaExk8znar4YL67z8XfHeRigjySFdWJ6mZRPczaCbtUIDPgqunRPuRev6EVh3qrbAe/11vn94WurxTrH95FKdFDfeAGDz0jjAWqCKj58khhj1pDnHBNbJy4Ug0woVRcwQwyQBsz+GajPJRflWvTf7j6tCs0URcWVP7q67GRbibNGMKCL5WTxWN2j2zHRqXU6TS9Wo1cqgJmV2Zymx1Xvpw== 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=LpfEVfS4CCoukOzM8xJUd4MN/H43CiE2ScAkR3AZnz6WeEDvrk6hAiDjtjDG9AsjYzB/izpiHOV69lTuwBQ96TneVDbZXzK7+42j9wL1inffav4jMjxxBu2pLU+snEG394RhMellZoJ/GNfCfUJXyY2hKcLH5wwUWmBrTM/omNXCuwk4C1RIeGIbpLuyL94N1CgM6+Z0NaWKeeyNqX2vpgm6jP8u4zcnzBzGAoSjXZUU+gE0hFrkxHHx3BEC0BV476682IVr/TvkdsjtUr+pPWjvqOwfz0Ri1JnxoWNg2ItwkiE0Lc1ndu477tJh5WbpHsCm0tvvQXhutIPz8O9Dxg== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:23 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:23 +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 v5 20/25] iommu/sun50i: Add an IOMMU_IDENTITIY_DOMAIN Date: Mon, 24 Jul 2023 14:22:10 -0300 Message-ID: <20-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0025.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::30) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 734e32eb-36d8-4a07-f58c-08db8c6a882c 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 01Q0hpRp8GnW+iCq2uRFqiVcQgQnSyE/9cP5ivjp4q1tISdQt+3+cWOCVHSJa9mz6WEJE6ReJuVG3K4fjvDbNxBrAmekLFCgscAUmfN0hqXPVfeBIlAdFmHVRShu+8GXccfRrhyrU3QZO2NjVmv+SdmtfinY3rv2FKoWVcp9rbCk9SkUnlALbK7vGPS20mEtb7aIsLY0GlKfMMfRMAUKi9VMBtBn24zqtPKa2nhA8NNub4GW1Fs7PI0m0EHgxstgOTb8uccyZq5e1edY0Imt9w8cdX2NMmYqRcgXOkUbW2u7rFEpSrK+8dWoIlTUbfymbqd1fBKj4r7ILN0MF7nk7RMrH9mjZo6mET+12Q5Ik9SoEUrkR/hcrS2h3OAOJdET5FHjnQwZJxGlpGSwiHNCI9RgkJVQ4WbkBZXTa73eN/xd9j9OiAn7xA0R5Uo1PivrKFHpamsIhnPaBGb7ggg4ylGt8SLFFCxVSn6CYxAbsy4nUb6o0ZeSJj8A5tMC5AlywL5bDgYjfKWB/ef+eNyFeFnEwWLLjJDPOCvPcPPhS0ADvnjPmd1par5Wf3t12uvefbBW1BMcwaJWWP3f8Gp1Rcwk5a/IProeE+pckDtltoqh07IA6MpuIW/QjuPrBEYw5AO61H+xHnE9dfl81dACNYWEmVfIESzYkF7E8u0IMRduqDPg26Yn8yeQFcn9G5Mn1BA0e8aG1P9z6BKX4oFlBC32+o06wQLJYPjjPNtX/KRerBJO1N8M+lwwK/vKv4cSMQ08TDArCIQQHRTKxA4rlSf9VvM6tTPawFKeDiXMx7UfZG04PFbDUVe3LQ38xy5nOHsJmYXl6XGH+dKL/vccsudid/nj7H3bxaoq7LAi4kDO5+HvjesdiYXBuWhQakYXwf4r7tg3T6l15RiqyPnAYISicy+6CqGVlC3XRMEq1vwd1ID/U4Huov6IGEuQRN+7QamICVA+ZmCluGhxsSicOcdoCfV2Wn4NiV0eh1zrj+DezAaS65RLEqHbPQJ/RF2EWdSCzojXPNH3UmjlI0MOYAuhQxkQ/m74K9CxbVWxh5G0GSzHo+95D2FN+MpxDnCEEhNDCP0Qsnf+X36mbg758V+nMRrZwKDA0ZxA95FwTWg+lWcMobQ9+YRKO14B0nD6sVYSBSfVaeGxaIJfasCGZShupVQFqTo/wGXqIbqoLF+hgU+vOXHvntjmdxyJLMD8ep0LyrKLVo0Ecr2oYJTdNHXCXcySSMNoARG+5QgkUcUipd6QBeqBB+BfeYINkA2SARDY67KrAuA2gUK9hKuGF+K24PYxWr8dKxCUNRnmlwwZI43ILopKReRpLgwHFscijTgivQaJw1hNQOy3zU4OIaKmPl+h0sqCrjZwzbO492t63I0sJJo0ES0/Vhtlpvs/MZk4YOZ9w/aZte74zQZ+E/WuUGoA8eZP6uFk1efSIqMzAVkG/L75tMNBBVkCOl0K+4VO5+NMXcFh50BDcIYGSgpHQcaZgwwwC00FcbbOx8xdqUcArBnDNGa6hkIvr/KC0TdaRUqeROkHaB/4oP8G3qDBAUpkaQ4xZrRdGNyvmUNQ7OGyWiT8vEvhr+0z71yw X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 734e32eb-36d8-4a07-f58c-08db8c6a882c X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:18.5521 (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: gGTVfcXz/tae+j7tAkRF3fahaPOT58afkYHihGZdWvEf0iCO/U/+CBBA8Kd6/ah9 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102238_222925_10D27562 X-CRM114-Status: GOOD ( 14.19 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.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; From patchwork Mon Jul 24 17:22:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325110 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 03966C001B0 for ; Mon, 24 Jul 2023 17:25:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=r5GHXDukFiznG+BAnSybCGYJiW7ONltFgIdytInRrqc=; b=ueisZrMbEDo8PONU3gHmsSeUCr r7nld0ak2GSZZiUzDiwEnqVFR0KVWl7BtacwJ9cPl6pkXx7Lmt1wfCLfVfkjAXIgUrjMEchB33f9x O2ni5YIOl28la01v/YDZIHTJ2kziZdbBK9rmOigMKCpg+TneDhl855qIjXYOLRBwpYCKrRUR/cWh6 YEUL8PblqYHe7etoJgyEIK22DlI2t0VQqzvnQgtzstSQ1gYPKAEHOh6porE9VS8NlHIAJfWT9ULmf XWbhUhh2Fx2NmRbadB1C0FiMpOBscmNQglQKqaxe4Ls30JqF7/9Wba/0GtM9fQeAfZzS3ZE+mu6w7 ZCCiEp7g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIo-00527f-1Q; Mon, 24 Jul 2023 17:24:58 +0000 Received: from mail-mw2nam04on20605.outbound.protection.outlook.com ([2a01:111:f400:7e8c::605] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGb-005096-1q; Mon, 24 Jul 2023 17:22:43 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=VqujkkzwlHP0oCciMyR4vPi1tVuTPxX3hMrtQhQ3yle2nuxFZG1I1517XpInZrISqH6b1o3FuxRhUUxIcxLwENuESzLNby5Xgvl/utKf7e9z66WyG0zPAIV80y/y3Q+X3uhauSXwnBiml5y63yTpEZIv0aDdK969DbPSRhl/6tJo1eNWDN3MkPlIdAzI2EmP84TwDNwwsefTCiLP5PlKwtNVR4pNjSOCNGCfyEtfOOXfKoUoLR8o0X1oyF6bla+XGMxzmxheZXV6iKTn16qJwvk51wx7ym1/P0aQjypPjUhkdZKfeEFYD1cxwfOaI57RzIxmf5dU8H2agRTuIC84ZQ== 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=r5GHXDukFiznG+BAnSybCGYJiW7ONltFgIdytInRrqc=; b=Y8YPJLsfOPHrR9+ULssMHADAT73E6Veui18tvDVIisQMTET0ATi93+3tY+N+XIysRlWf1H4NDGfPqnANuL4rb29bSVtK9wL2pN8qm+aIPi8U7slFMZlkbb0gTRrS84IYycTP0ZQmRwhdvBKBIEFvpjoPOH3el01EchxaSiwYbupIJsrTMdBQKKRs5UVcMqo0VHmCf5ZtC3EYITo/eZOYJwPcn2GQqzE/q3YA43t3ZL+V0nZpxiKeWMLD2rrxtBp0aszsqKCLQBfots4jf91sKq3NmRblegngtm6fQi9eRO/9xZXPIVtbTebEKIRtrKNtYF6YNqWgRfjnJT3DZ/etMQ== 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=r5GHXDukFiznG+BAnSybCGYJiW7ONltFgIdytInRrqc=; b=WuEHKuHOqZra+9S92CZOlLPyMwUczz8JFohL1ePn/v7LgnFPb2M1iejFNLxZ8JYeyymjUX7w2WZdiGRgfNmpo/pNveIFVEGhHoXZbxqIAi5NRSxFNZSd7c/I2YOGTrjiZdBjiycfUL56CAX3C75p+VREm/qJr+wFpf+SNu/tcw4OAbYEcBRdxCR+4MOTYaJDCgStdf3cnAUXjBLMi6WUVYMbnVC5P9dCI7162kJ/1cs7t93A2H2Uzdzmhb8LmUWpOeJfmgbPlHRQeg+haL4uNjSttPTBpChTwUeeVakQVIsoOjyt1MIs6SBzLRpYBmcHIY2DvU/06BwHwpqRW682qQ== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:27 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:27 +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 v5 21/25] iommu: Require a default_domain for all iommu drivers Date: Mon, 24 Jul 2023 14:22:11 -0300 Message-ID: <21-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0208.namprd13.prod.outlook.com (2603:10b6:208:2be::33) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 6660280b-5ade-4a49-d0ea-08db8c6a88f2 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 6660280b-5ade-4a49-d0ea-08db8c6a88f2 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:19.6438 (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: E7W4DX9vpBaiZPPeUxuPcbzapFiVr1Z1j+lOtNmL/iqjpzGshyAo1cuSEvU0nkG5 X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102241_649088_CA3D2B81 X-CRM114-Status: GOOD ( 20.36 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org At this point every iommu driver will cause a default_domain to be selected, so we can finally remove this gap from the core code. The following table explains what each driver supports and what the resulting default_domain will be: ops->defaut_domain IDENTITY DMA PLATFORM v ARM32 dma-iommu ARCH amd/iommu.c Y Y N/A either apple-dart.c Y Y N/A either arm-smmu.c Y Y IDENTITY either qcom_iommu.c G Y IDENTITY either arm-smmu-v3.c Y Y N/A either exynos-iommu.c G Y IDENTITY either fsl_pamu_domain.c Y N/A N/A PLATFORM intel/iommu.c Y Y N/A either ipmmu-vmsa.c G Y IDENTITY either msm_iommu.c G IDENTITY N/A mtk_iommu.c G Y IDENTITY either mtk_iommu_v1.c G IDENTITY N/A omap-iommu.c G IDENTITY N/A rockchip-iommu.c G Y IDENTITY either s390-iommu.c Y Y N/A N/A PLATFORM sprd-iommu.c Y N/A DMA sun50i-iommu.c G Y IDENTITY either tegra-smmu.c G Y IDENTITY IDENTITY virtio-iommu.c Y Y N/A either spapr Y Y N/A N/A PLATFORM * G means ops->identity_domain is used * N/A means the driver will not compile in this configuration ARM32 drivers select an IDENTITY default domain through either the ops->identity_domain or directly requesting an IDENTIY domain through alloc_domain(). In ARM64 mode tegra-smmu will still block the use of dma-iommu.c and forces an IDENTITY domain. S390 uses a PLATFORM domain to represent when the dma_ops are set to the s390 iommu code. fsl_pamu uses an IDENTITY domain. POWER SPAPR uses PLATFORM and blocking to enable its weird VFIO mode. The x86 drivers continue unchanged. After this patch group->default_domain is only NULL for a short period during bus iommu probing while all the groups are constituted. Otherwise it is always !NULL. This completes changing the iommu subsystem driver contract to a system where the current iommu_domain always represents some form of translation and the driver is continuously asserting a definable translation mode. It resolves the confusion that the original ops->detach_dev() caused around what translation, exactly, is the IOMMU performing after detach. There were at least three different answers to that question in the tree, they are all now clearly named with domain types. Tested-by: Heiko Stuebner Tested-by: Niklas Schnelle Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index dada2c00d78ca4..1533e65d075bce 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1819,10 +1819,12 @@ static int iommu_get_default_domain_type(struct iommu_group *group, * ARM32 drivers supporting CONFIG_ARM_DMA_USE_IOMMU can declare an * identity_domain and it will automatically become their default * domain. Later on ARM_DMA_USE_IOMMU will install its UNMANAGED domain. - * Override the selection to IDENTITY if we are sure the driver supports - * it. + * Override the selection to IDENTITY. */ - if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) && ops->identity_domain) { + if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) { + static_assert(!(IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) && + IS_ENABLED(CONFIG_IOMMU_DMA))); + type = IOMMU_DOMAIN_IDENTITY; if (best_type && type && best_type != type) return -1; @@ -2920,18 +2922,9 @@ static int iommu_setup_default_domain(struct iommu_group *group, if (req_type < 0) return -EINVAL; - /* - * There are still some drivers which don't support default domains, so - * we ignore the failure and leave group->default_domain NULL. - */ dom = iommu_group_alloc_default_domain(group, req_type); - if (!dom) { - /* Once in default_domain mode we never leave */ - if (group->default_domain) - return -ENODEV; - group->default_domain = NULL; - return 0; - } + if (!dom) + return -ENODEV; if (group->default_domain == dom) return 0; From patchwork Mon Jul 24 17:22:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325094 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4EA9BC00528 for ; Mon, 24 Jul 2023 17:22:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=zHoJ4Ec2FR3QfbKcYvNHteX1iibvdhuwk1JTeFwq02M=; b=YwlRJ7MT22aJr/zgJiuHgUAdU/ OHOEwkN9ebEbOEsnVBF+Z4QjV25kQcMDR3njdVOztjNUWA5MEzkbHDH5QYxjD8OZcV5rNM7T2tnoM EpVBt8PmZdPLhKdr4HejTDy2ZCqEc+AfrdPV0V9bsjpN4eAESmOfAFF/f92UrQpHwzSNbrRPlSfMx kiX+ZVTJ2sXv0fn2n/apwRN0K6LjhP9wkZXRBdHn1lFRMZKm/UnAepzux5pgnf0AMOhLhadj259p4 dVJXUjSqJijZkN6mNKuOxQS1fBwtHf2wgk3qIcuV5xJArQJ8yt18lMMXF3auMjQZ9jorlTsJhk24l SOItNELg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGa-0050Cc-1w; Mon, 24 Jul 2023 17:22:40 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGO-004zzV-1X; Mon, 24 Jul 2023 17:22:30 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PMfLio63p2sKAv+I9uSl1vXxtWQE3gHLZZCfEbFqBQDHF/4eajSAruL0zh7htNbXhvv/RhLDrFvVzGUh3NMdpGEYK22JvzyKM+lCS7nibYZ6u9hNWnDdB30HeJIVIotDFf3W/nOfsoap65hmSCkCOvRZ20v7GjiBaRVbPjBFXCRM9940kSFezpzlbJ+C8L93XFeMhOeWQAMh+PsjM4ooRwFUJZ/kdrla7VBEYv3KOnmIICak+I127icdl9VP6nG/0CKNmnQXu/n3av7ESQY+6e4Bsu3gOC/LlDBAVWSA4ETx7FklXCg+H4CllolY5qGlCehEEaQqgW19WIV7Xe04hQ== 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=zHoJ4Ec2FR3QfbKcYvNHteX1iibvdhuwk1JTeFwq02M=; b=duMEipS1iICt0A9IuQhEZ+nABAk7+tJRt+e5HAaUl3ccO9IqPeVjESIpy7uIeQxOU6dPHewxoIFTlP7zLHUMdll2pnU50AqYkO2xtfJrsUQqzwavcqtULrQnR3nP0OQB6tvBH4EvDcXMcdygUB7DP5A0WEeV6T4OCtHD8EsCKeAG5RlhW/qV8o69tdM7qmbLKyyN8kMLGHGPiiKpwgh2zLudh2LrtEeu6+h3UUSKUrr+ym5RxC9yC+Lw0DPG/LS55yqKAOliVr2d8eQ5e3W3tVOZoOO7BgEagIU7vrI/lhg7/F9qHKnLqfBoX8vYVRZl8imFgZDfCJHN1MO9a5rLHA== 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=zHoJ4Ec2FR3QfbKcYvNHteX1iibvdhuwk1JTeFwq02M=; b=BP/9wtyhOIi5a095vZdP39t7HJeleHuexjmN6lyOUDtin0+OI8Qlzti7cji/IPwewPhx9WGRfi4c9FkowDdHhL/gWDKiAI4FkSLw5Lj7sB5kQdIVk0xSmv6nJY1Bkviu92e4/MTT7ISONoWnqX3Yhd22wmTgr/2mxVu3urfF+ofa/IB4mrBlacEJfYL2sAj11g+xqcQ++XvzgjTg+pCSi39LSYjC3jIBOSuSPkOnIcONAYDi6+XPIsLquXnl792ANKehYdRQPmgQZHJI4OTYdVy3tPAZCBl0m5iSN5ymhSGm/9bXRcHn4EP37aus9HU9vGnGdD9/d64TTK5fGfGYTQ== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:18 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:18 +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 v5 22/25] iommu: Add __iommu_group_domain_alloc() Date: Mon, 24 Jul 2023 14:22:12 -0300 Message-ID: <22-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR03CA0020.namprd03.prod.outlook.com (2603:10b6:208:2d::33) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: 2bbdbdbd-e196-4e7b-f54d-08db8c6a875f 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005);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: 2bbdbdbd-e196-4e7b-f54d-08db8c6a875f X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.0693 (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: GpUgpw/aOVy37H16sMMvyNbmz4aayX5x3GcJ9fDxoPoo6icYsRpOmJryP+bE7CEi X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102228_529980_8BE08F3D X-CRM114-Status: GOOD ( 20.47 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Allocate a domain from a group. Automatically obtains the iommu_ops to use from the device list of the group. Convert the internal callers to use it. Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 66 ++++++++++++++++++++++++------------------- 1 file changed, 37 insertions(+), 29 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 1533e65d075bce..bc8b35e31b5343 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -94,8 +94,8 @@ static const char * const iommu_group_resv_type_string[] = { static int iommu_bus_notifier(struct notifier_block *nb, unsigned long action, void *data); static void iommu_release_device(struct device *dev); -static struct iommu_domain *__iommu_domain_alloc(const struct bus_type *bus, - unsigned type); +static struct iommu_domain * +__iommu_group_domain_alloc(struct iommu_group *group, unsigned int type); static int __iommu_attach_device(struct iommu_domain *domain, struct device *dev); static int __iommu_attach_group(struct iommu_domain *domain, @@ -1713,12 +1713,11 @@ struct iommu_group *fsl_mc_device_group(struct device *dev) EXPORT_SYMBOL_GPL(fsl_mc_device_group); static struct iommu_domain * -__iommu_group_alloc_default_domain(const struct bus_type *bus, - struct iommu_group *group, int req_type) +__iommu_group_alloc_default_domain(struct iommu_group *group, int req_type) { if (group->default_domain && group->default_domain->type == req_type) return group->default_domain; - return __iommu_domain_alloc(bus, req_type); + return __iommu_group_domain_alloc(group, req_type); } /* @@ -1728,9 +1727,10 @@ __iommu_group_alloc_default_domain(const struct bus_type *bus, static struct iommu_domain * iommu_group_alloc_default_domain(struct iommu_group *group, int req_type) { - const struct bus_type *bus = + struct device *dev = list_first_entry(&group->devices, struct group_device, list) - ->dev->bus; + ->dev; + const struct iommu_ops *ops = dev_iommu_ops(dev); struct iommu_domain *dom; lockdep_assert_held(&group->mutex); @@ -1740,24 +1740,24 @@ iommu_group_alloc_default_domain(struct iommu_group *group, int req_type) * domain. This should always be either an IDENTITY or PLATFORM domain. * Do not use in new drivers. */ - if (bus->iommu_ops->default_domain) { + if (ops->default_domain) { if (req_type) return ERR_PTR(-EINVAL); - return bus->iommu_ops->default_domain; + return ops->default_domain; } if (req_type) - return __iommu_group_alloc_default_domain(bus, group, req_type); + return __iommu_group_alloc_default_domain(group, req_type); /* The driver gave no guidance on what type to use, try the default */ - dom = __iommu_group_alloc_default_domain(bus, group, iommu_def_domain_type); + dom = __iommu_group_alloc_default_domain(group, iommu_def_domain_type); if (dom) return dom; /* Otherwise IDENTITY and DMA_FQ defaults will try DMA */ if (iommu_def_domain_type == IOMMU_DOMAIN_DMA) return NULL; - dom = __iommu_group_alloc_default_domain(bus, group, IOMMU_DOMAIN_DMA); + dom = __iommu_group_alloc_default_domain(group, IOMMU_DOMAIN_DMA); if (!dom) return NULL; @@ -1998,19 +1998,16 @@ void iommu_set_fault_handler(struct iommu_domain *domain, } EXPORT_SYMBOL_GPL(iommu_set_fault_handler); -static struct iommu_domain *__iommu_domain_alloc(const struct bus_type *bus, - unsigned type) +static struct iommu_domain *__iommu_domain_alloc(const struct iommu_ops *ops, + unsigned int type) { struct iommu_domain *domain; unsigned int alloc_type = type & IOMMU_DOMAIN_ALLOC_FLAGS; - if (bus == NULL || bus->iommu_ops == NULL) - return NULL; + if (alloc_type == IOMMU_DOMAIN_IDENTITY && ops->identity_domain) + return ops->identity_domain; - if (alloc_type == IOMMU_DOMAIN_IDENTITY && bus->iommu_ops->identity_domain) - return bus->iommu_ops->identity_domain; - - domain = bus->iommu_ops->domain_alloc(alloc_type); + domain = ops->domain_alloc(alloc_type); if (!domain) return NULL; @@ -2020,10 +2017,10 @@ static struct iommu_domain *__iommu_domain_alloc(const struct bus_type *bus, * may override this later */ if (!domain->pgsize_bitmap) - domain->pgsize_bitmap = bus->iommu_ops->pgsize_bitmap; + domain->pgsize_bitmap = ops->pgsize_bitmap; if (!domain->ops) - domain->ops = bus->iommu_ops->default_domain_ops; + domain->ops = ops->default_domain_ops; if (iommu_is_dma_domain(domain) && iommu_get_dma_cookie(domain)) { iommu_domain_free(domain); @@ -2032,9 +2029,23 @@ static struct iommu_domain *__iommu_domain_alloc(const struct bus_type *bus, return domain; } +static struct iommu_domain * +__iommu_group_domain_alloc(struct iommu_group *group, unsigned int type) +{ + struct device *dev = + list_first_entry(&group->devices, struct group_device, list) + ->dev; + + lockdep_assert_held(&group->mutex); + + return __iommu_domain_alloc(dev_iommu_ops(dev), type); +} + struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus) { - return __iommu_domain_alloc(bus, IOMMU_DOMAIN_UNMANAGED); + if (bus == NULL || bus->iommu_ops == NULL) + return NULL; + return __iommu_domain_alloc(bus->iommu_ops, IOMMU_DOMAIN_UNMANAGED); } EXPORT_SYMBOL_GPL(iommu_domain_alloc); @@ -3144,21 +3155,18 @@ void iommu_device_unuse_default_domain(struct device *dev) static int __iommu_group_alloc_blocking_domain(struct iommu_group *group) { - struct group_device *dev = - list_first_entry(&group->devices, struct group_device, list); - if (group->blocking_domain) return 0; group->blocking_domain = - __iommu_domain_alloc(dev->dev->bus, IOMMU_DOMAIN_BLOCKED); + __iommu_group_domain_alloc(group, IOMMU_DOMAIN_BLOCKED); if (!group->blocking_domain) { /* * For drivers that do not yet understand IOMMU_DOMAIN_BLOCKED * create an empty domain instead. */ - group->blocking_domain = __iommu_domain_alloc( - dev->dev->bus, IOMMU_DOMAIN_UNMANAGED); + group->blocking_domain = __iommu_group_domain_alloc( + group, IOMMU_DOMAIN_UNMANAGED); if (!group->blocking_domain) return -EINVAL; } From patchwork Mon Jul 24 17:22:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325111 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id ADC0FC00528 for ; Mon, 24 Jul 2023 17:25:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YrTafN+07KIfO/PnkWCxNk47ua0dcMT2PFcmy6J4qb0=; b=v0br/VpNetKCs7aKJr3r6D9R8m TtniCvLT4I2vxy6niYl+jyYj0NAtEBhrsQKnW36JffnSFXcr7KyN53pVc9jeTSyXKr15sY3hnUzEO TgV2vVpa6nul3yqrEKLJ6NkYZINe2qjdM7NxYTUAj6rqPXcroZ7oRm8+dqxdQCL3vIZP3v4QnRdrh kejAB4fJMIN1yqQ5ljt2sByo/q1lHgW1rMePagYfCXU76ssLk+EwlYJZR+hhDkHff+TIhA1oJ4mpf TT9LXqGM+QU5Yxxfsj4soHexxaeAR2Ueh+JXCfpLRAiHCQeCVpyihTpd7x0WN5E9elBVDxMZAuMuJ t19dE03w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzIq-0052A9-2Q; Mon, 24 Jul 2023 17:25:00 +0000 Received: from mail-mw2nam04on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e8c::62c] helo=NAM04-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGc-00508i-2N; Mon, 24 Jul 2023 17:22:44 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Y4CW2XX1j3PaYtUDVf4D2Z8pULs4lwvd9YTqqYcQKLFGLzdAB7hkEk8ZXNB7X7Q8b/B1yShkGEyCwP0t6HR1QfmnZsZn/VlTSsVE5Kfk70Wyo2UXwNgKljQ0sQgiw/q950yMS7Tvdwni4lz2ZED00qki3x++NblhwDfLwaT6ctMLSFuogdr28JGLiU7Pg+qYwNu8w1PsL/VrI4xb27J7Qkyus5bYO8nefJgYp3deN0NXhZabo1gp6UHXGp8l8Nxql0j5i2rVfmCjA2ZicR53uac527StetmipEMhAVtyFAHK52TL5BfasEAMYIyidRHiHAAJ7WYbXPgur9KM0Pycaw== 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=YrTafN+07KIfO/PnkWCxNk47ua0dcMT2PFcmy6J4qb0=; b=NYMDQw6KYzT2XcxUSz7dXMxGM/Vch+ji7EbAAiAqT9Yo1TKtiRWTER3O44pyROnkoDm36OV4YJXMgk2ubh6+Cov9dfG/u5E4kaFXqs2Rggo7WvtOmajHCiXzD8a4JQomYOEI82D9s9Ariz26JrSIMXuTDrNfa2TDxRbNWT/WBa6m0wx3MCoY4zPnq6PBnazni7L7rmraoLaEDfmxcmZIkpDvuo7l+XMqxcucZsrzZdj8w8vFS1F8PzWUyGmvmLRqGW/izZGhXy0etyJKbTJs9a2B8lXeUblDoUaZE3dO+RXMNvttfR1SBAlMD1PdxDFMBif3QGlGsKo8yfVtbiajTA== 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=YrTafN+07KIfO/PnkWCxNk47ua0dcMT2PFcmy6J4qb0=; b=JSCfosNS1m1T8NZ+OhklFEBtdwXaO0CvcR/YgtKIo/khWVt/peqDa98ETisan4Oria9OWQXR+jMnnOYWL8ywTsHBA96O8gQQneV7ddsvaoxOlUw1558toEEZ0FL2fT7N0h7B0bW+jubwvye/OyPBuDDoYIi5p9gF1Owh3VmaJq9TX55FCPNV1Fi7bmYqSYoiOfnTBdK/1yCiIuxHEGti2zyzmzBjGysVjKJIG/a4Bd2SxLlrn9fJU2GyAKUjbEX/f46wfe3aaK215ZK5BkRjPewrcOTUFAW7vyMlRyod4ysseWz+6mIPkE4sD15/LEW9miw0WqoM+J5OsFlBg4H5Cw== 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 CH0PR12MB5252.namprd12.prod.outlook.com (2603:10b6:610:d3::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:27 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:27 +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 v5 23/25] iommu: Add ops->domain_alloc_paging() Date: Mon, 24 Jul 2023 14:22:13 -0300 Message-ID: <23-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0200.namprd13.prod.outlook.com (2603:10b6:208:2be::25) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|CH0PR12MB5252:EE_ X-MS-Office365-Filtering-Correlation-Id: 18473151-854a-4864-6726-08db8c6a892e 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)(376002)(346002)(396003)(136003)(39860400002)(366004)(451199021)(2906002)(2616005)(83380400001)(4326008)(316002)(6512007)(66476007)(66556008)(66946007)(107886003)(41300700001)(6486002)(36756003)(478600001)(6666004)(86362001)(110136005)(54906003)(921005)(38100700002)(186003)(7406005)(7416002)(8676002)(8936002)(6506007)(5660300002)(26005);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: 18473151-854a-4864-6726-08db8c6a892e X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:20.1360 (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: PPwQuQppZvhGwrB8gPAe0F2Ud4zRR1fMunX9VQRoOIbN9XHsiSM79Ydlni3nT2Xo X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5252 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102242_812554_2CAF9078 X-CRM114-Status: GOOD ( 19.51 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org This callback requests the driver to create only a __IOMMU_DOMAIN_PAGING domain, so it saves a few lines in a lot of drivers needlessly checking the type. More critically, this allows us to sweep out all the IOMMU_DOMAIN_UNMANAGED and IOMMU_DOMAIN_DMA checks from a lot of the drivers, simplifying what is going on in the code and ultimately removing the now-unused special cases in drivers where they did not support IOMMU_DOMAIN_DMA. domain_alloc_paging() should return a struct iommu_domain that is functionally compatible with ARM_DMA_USE_IOMMU, dma-iommu.c and iommufd. Be forwards looking and pass in a 'struct device *' argument. We can provide this when allocating the default_domain. No drivers will look at this. Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe Reviewed-by: Lu Baolu --- drivers/iommu/iommu.c | 13 ++++++++++--- include/linux/iommu.h | 3 +++ 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index bc8b35e31b5343..5b5cf74edc7e53 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1999,6 +1999,7 @@ void iommu_set_fault_handler(struct iommu_domain *domain, EXPORT_SYMBOL_GPL(iommu_set_fault_handler); static struct iommu_domain *__iommu_domain_alloc(const struct iommu_ops *ops, + struct device *dev, unsigned int type) { struct iommu_domain *domain; @@ -2006,8 +2007,13 @@ static struct iommu_domain *__iommu_domain_alloc(const struct iommu_ops *ops, if (alloc_type == IOMMU_DOMAIN_IDENTITY && ops->identity_domain) return ops->identity_domain; + else if (type & __IOMMU_DOMAIN_PAGING && ops->domain_alloc_paging) { + domain = ops->domain_alloc_paging(dev); + } else if (ops->domain_alloc) + domain = ops->domain_alloc(alloc_type); + else + return NULL; - domain = ops->domain_alloc(alloc_type); if (!domain) return NULL; @@ -2038,14 +2044,15 @@ __iommu_group_domain_alloc(struct iommu_group *group, unsigned int type) lockdep_assert_held(&group->mutex); - return __iommu_domain_alloc(dev_iommu_ops(dev), type); + return __iommu_domain_alloc(dev_iommu_ops(dev), dev, type); } struct iommu_domain *iommu_domain_alloc(const struct bus_type *bus) { if (bus == NULL || bus->iommu_ops == NULL) return NULL; - return __iommu_domain_alloc(bus->iommu_ops, IOMMU_DOMAIN_UNMANAGED); + return __iommu_domain_alloc(bus->iommu_ops, NULL, + IOMMU_DOMAIN_UNMANAGED); } EXPORT_SYMBOL_GPL(iommu_domain_alloc); diff --git a/include/linux/iommu.h b/include/linux/iommu.h index df54066c262db4..8f69866c868e04 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -233,6 +233,8 @@ struct iommu_iotlb_gather { * struct iommu_ops - iommu ops and capabilities * @capable: check capability * @domain_alloc: allocate iommu domain + * @domain_alloc_paging: Allocate an iommu_domain that can be used for + * UNMANAGED, DMA, and DMA_FQ domain types. * @probe_device: Add device to iommu driver handling * @release_device: Remove device from iommu driver handling * @probe_finalize: Do final setup work after the device is added to an IOMMU @@ -264,6 +266,7 @@ struct iommu_ops { /* Domain allocation and freeing by the iommu driver */ struct iommu_domain *(*domain_alloc)(unsigned iommu_domain_type); + struct iommu_domain *(*domain_alloc_paging)(struct device *dev); struct iommu_device *(*probe_device)(struct device *dev); void (*release_device)(struct device *dev); From patchwork Mon Jul 24 17:22:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325103 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 4ED03C001DF for ; Mon, 24 Jul 2023 17:24:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Qg6RwPc3o59Fy/WU3EeeG9ZakmbO8tBMyKbd8yYPm1c=; b=HppdiwQe6TwKRWxRkw6Gg3vVTI caCTYk/+G+pANggLSrMQFIMLMQbXydI2TKH2EZkkhp/TgZ39VCKZKHB1/zy3VmIoWbq59Z9WpWx0A vdB6CySak5msDcPHDV9+pxlwN+DnDOPwOqaOF577aepwsNywkzgtGxv4YBfxqHYAFNauxwUWxim35 McozzgCf83bjFFn4OZEAHt4w3Vzun5A6q80B8lvB75CS8ENJcAZSW1JtJY/FuADDjuqj9dXG9S+7a XbS67dv6rsmbOWsOgigRJ6apOekTUEzJbaDTT+H34B2TRfx3V3xvj9FqiEIYSpWw6JxLoqe9TMMUu Bmr2y6Ag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzI7-0051UG-09; Mon, 24 Jul 2023 17:24:15 +0000 Received: from mail-mw2nam10on2062c.outbound.protection.outlook.com ([2a01:111:f400:7e89::62c] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGX-004zzV-0f; Mon, 24 Jul 2023 17:22:39 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ScaPqeeKrk3fGCkNZlovZ5+WP7TVyQZxtk570koXaBePuyBgIZzgE27KGM9WLhxo1y8xbLEGfxXrcnoK2cpWcCV/2fbqyNJYuDYw3+uSZIH8Kc/+bvx7ZB22o3s9ICESnrVKiam7qzKgZxJXDNEYyZFv7QpnEAtNRkGwlZaf7WghRAotAIqbAPdrh+rY2mMHjqjliYyyiy4ZaT9Af9X3BCgLQ5JTD07lgaU+d+KDrT46zvWGjMYB1o9up8cqWXGvNvMQ+b1tld5oliWRmuhtMSV50b4eOVUiZ7Rq3Vm+S8NSLtLnoo71qeHkkHrswMs1Goz6pqNWDDOXpCv0UHcWBw== 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=Qg6RwPc3o59Fy/WU3EeeG9ZakmbO8tBMyKbd8yYPm1c=; b=b8ggEgkKBysQaP3/pcUsWbDmgEjU+zmDiDInbAZGpMGrd07kxkZs/6M5CrFpy1fp2F3RpCQCUT/ziyFgj8S9alVFU8ssz6o8YicMh+K6OoWBLfSO1KrOsWTj/iBfs++i6lwlVszcTLKpWFDh9Q6V3HqsjC4wo6/gGJCqZAjrsAHqn1/XjcH2wfz2ZMuajML4XTHbUTCtRG8kwX2r/+iLVzEgGXNxSq/vFCNblM/zeyo2xdY11hCagebbzvBXhgnVpF+hDY+YZJ1BJ6SlFZci1ylzJwHnNJiugek6EoruUm1CCijWrDIRjYnDabSyhaRYYUbvrzzUAXsbTHi6geEhAQ== 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=Qg6RwPc3o59Fy/WU3EeeG9ZakmbO8tBMyKbd8yYPm1c=; b=UEahh4DAYWUczndTWR2Bx5avG7YfKk6APiEyBDZ6DUGoU2Qhl+XORApPuXyfepIidH4osjrIhxGTFufpgcr8aUu2tktXb8xx3RADBWrYKmwK0JILPoIRHs45tZ6TKyoHiN9yu6h8B0IW11gb3T8H2GZCKoL5Mp8ap6790b406s2eeLfH7VuV4ynNbOR7Cf7tjHqj9rFd0UY51ACpaz8ohf7Vt+QlA4hADgYigYSvDYmKAMMRHYNZzYwPr4Z4pZdV56lxDHaH29EywFEeBsSCBoFCmUajFLcS5FZICvyB62YJBxkZz3oZviBt9WApPTLktIcKPw0TSwxGKMnUy9jbIw== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:21 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:21 +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 v5 24/25] iommu: Convert simple drivers with DOMAIN_DMA to domain_alloc_paging() Date: Mon, 24 Jul 2023 14:22:14 -0300 Message-ID: <24-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1P222CA0015.NAMP222.PROD.OUTLOOK.COM (2603:10b6:208:2c7::20) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: 2d043acd-3065-46c8-b3e8-08db8c6a87a2 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005);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: 2d043acd-3065-46c8-b3e8-08db8c6a87a2 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.7248 (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: WXb6Th5/Z6musT9eaxjrd0NY+KJ6u9QL7QcBjgeXXp3i04KLjYL4R7IMF16hssBF X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102237_272788_24FE4DCD X-CRM114-Status: GOOD ( 13.29 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org These drivers are all trivially converted since the function is only called if the domain type is going to be IOMMU_DOMAIN_UNMANAGED/DMA. Tested-by: Heiko Stuebner Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- drivers/iommu/arm/arm-smmu/qcom_iommu.c | 6 ++---- drivers/iommu/exynos-iommu.c | 7 ++----- drivers/iommu/ipmmu-vmsa.c | 7 ++----- drivers/iommu/mtk_iommu.c | 7 ++----- drivers/iommu/rockchip-iommu.c | 7 ++----- drivers/iommu/sprd-iommu.c | 7 ++----- drivers/iommu/sun50i-iommu.c | 9 +++------ drivers/iommu/tegra-smmu.c | 7 ++----- 8 files changed, 17 insertions(+), 40 deletions(-) diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c index 9d7b9d8b4386d4..a2140fdc65ed58 100644 --- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c +++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c @@ -319,12 +319,10 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain, return ret; } -static struct iommu_domain *qcom_iommu_domain_alloc(unsigned type) +static struct iommu_domain *qcom_iommu_domain_alloc_paging(struct device *dev) { struct qcom_iommu_domain *qcom_domain; - if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) - return NULL; /* * Allocate the domain and initialise some of its data structures. * We can't really do anything meaningful until we've added a @@ -593,7 +591,7 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args) static const struct iommu_ops qcom_iommu_ops = { .identity_domain = &qcom_iommu_identity_domain, .capable = qcom_iommu_capable, - .domain_alloc = qcom_iommu_domain_alloc, + .domain_alloc_paging = qcom_iommu_domain_alloc_paging, .probe_device = qcom_iommu_probe_device, .device_group = generic_device_group, .of_xlate = qcom_iommu_of_xlate, diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c index 5e12b85dfe8705..d6dead2ed10c11 100644 --- a/drivers/iommu/exynos-iommu.c +++ b/drivers/iommu/exynos-iommu.c @@ -887,7 +887,7 @@ static inline void exynos_iommu_set_pte(sysmmu_pte_t *ent, sysmmu_pte_t val) DMA_TO_DEVICE); } -static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type) +static struct iommu_domain *exynos_iommu_domain_alloc_paging(struct device *dev) { struct exynos_iommu_domain *domain; dma_addr_t handle; @@ -896,9 +896,6 @@ static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type) /* Check if correct PTE offsets are initialized */ BUG_ON(PG_ENT_SHIFT < 0 || !dma_dev); - if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - domain = kzalloc(sizeof(*domain), GFP_KERNEL); if (!domain) return NULL; @@ -1472,7 +1469,7 @@ static int exynos_iommu_of_xlate(struct device *dev, static const struct iommu_ops exynos_iommu_ops = { .identity_domain = &exynos_identity_domain, - .domain_alloc = exynos_iommu_domain_alloc, + .domain_alloc_paging = exynos_iommu_domain_alloc_paging, .device_group = generic_device_group, .probe_device = exynos_iommu_probe_device, .release_device = exynos_iommu_release_device, diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index de958e411a92e0..27d36347e0fced 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -566,13 +566,10 @@ static irqreturn_t ipmmu_irq(int irq, void *dev) * IOMMU Operations */ -static struct iommu_domain *ipmmu_domain_alloc(unsigned type) +static struct iommu_domain *ipmmu_domain_alloc_paging(struct device *dev) { struct ipmmu_vmsa_domain *domain; - if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) - return NULL; - domain = kzalloc(sizeof(*domain), GFP_KERNEL); if (!domain) return NULL; @@ -891,7 +888,7 @@ static struct iommu_group *ipmmu_find_group(struct device *dev) static const struct iommu_ops ipmmu_ops = { .identity_domain = &ipmmu_iommu_identity_domain, - .domain_alloc = ipmmu_domain_alloc, + .domain_alloc_paging = ipmmu_domain_alloc_paging, .probe_device = ipmmu_probe_device, .release_device = ipmmu_release_device, .probe_finalize = ipmmu_probe_finalize, diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index fdb7f5162b1d64..3590d3399add32 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -667,13 +667,10 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom, return 0; } -static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type) +static struct iommu_domain *mtk_iommu_domain_alloc_paging(struct device *dev) { struct mtk_iommu_domain *dom; - if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - dom = kzalloc(sizeof(*dom), GFP_KERNEL); if (!dom) return NULL; @@ -995,7 +992,7 @@ static void mtk_iommu_get_resv_regions(struct device *dev, static const struct iommu_ops mtk_iommu_ops = { .identity_domain = &mtk_iommu_identity_domain, - .domain_alloc = mtk_iommu_domain_alloc, + .domain_alloc_paging = mtk_iommu_domain_alloc_paging, .probe_device = mtk_iommu_probe_device, .release_device = mtk_iommu_release_device, .device_group = mtk_iommu_device_group, diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c index a582525d36f8cc..5deb64b9cbe4b5 100644 --- a/drivers/iommu/rockchip-iommu.c +++ b/drivers/iommu/rockchip-iommu.c @@ -1043,13 +1043,10 @@ static int rk_iommu_attach_device(struct iommu_domain *domain, return ret; } -static struct iommu_domain *rk_iommu_domain_alloc(unsigned type) +static struct iommu_domain *rk_iommu_domain_alloc_paging(struct device *dev) { struct rk_iommu_domain *rk_domain; - if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) - return NULL; - if (!dma_dev) return NULL; @@ -1172,7 +1169,7 @@ static int rk_iommu_of_xlate(struct device *dev, static const struct iommu_ops rk_iommu_ops = { .identity_domain = &rk_identity_domain, - .domain_alloc = rk_iommu_domain_alloc, + .domain_alloc_paging = rk_iommu_domain_alloc_paging, .probe_device = rk_iommu_probe_device, .release_device = rk_iommu_release_device, .device_group = rk_iommu_device_group, diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c index 39e34fdeccda78..af68b3a2c123ab 100644 --- a/drivers/iommu/sprd-iommu.c +++ b/drivers/iommu/sprd-iommu.c @@ -133,13 +133,10 @@ sprd_iommu_pgt_size(struct iommu_domain *domain) SPRD_IOMMU_PAGE_SHIFT) * sizeof(u32); } -static struct iommu_domain *sprd_iommu_domain_alloc(unsigned int domain_type) +static struct iommu_domain *sprd_iommu_domain_alloc_paging(struct device *dev) { struct sprd_iommu_domain *dom; - if (domain_type != IOMMU_DOMAIN_DMA && domain_type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - dom = kzalloc(sizeof(*dom), GFP_KERNEL); if (!dom) return NULL; @@ -419,7 +416,7 @@ static int sprd_iommu_of_xlate(struct device *dev, struct of_phandle_args *args) static const struct iommu_ops sprd_iommu_ops = { - .domain_alloc = sprd_iommu_domain_alloc, + .domain_alloc_paging = sprd_iommu_domain_alloc_paging, .probe_device = sprd_iommu_probe_device, .device_group = sprd_iommu_device_group, .of_xlate = sprd_iommu_of_xlate, diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c index 0bf08b120cf105..056832a367c2af 100644 --- a/drivers/iommu/sun50i-iommu.c +++ b/drivers/iommu/sun50i-iommu.c @@ -667,14 +667,11 @@ static phys_addr_t sun50i_iommu_iova_to_phys(struct iommu_domain *domain, sun50i_iova_get_page_offset(iova); } -static struct iommu_domain *sun50i_iommu_domain_alloc(unsigned type) +static struct iommu_domain * +sun50i_iommu_domain_alloc_paging(struct device *paging) { struct sun50i_iommu_domain *sun50i_domain; - if (type != IOMMU_DOMAIN_DMA && - type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - sun50i_domain = kzalloc(sizeof(*sun50i_domain), GFP_KERNEL); if (!sun50i_domain) return NULL; @@ -840,7 +837,7 @@ 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, + .domain_alloc_paging = sun50i_iommu_domain_alloc_paging, .of_xlate = sun50i_iommu_of_xlate, .probe_device = sun50i_iommu_probe_device, .default_domain_ops = &(const struct iommu_domain_ops) { diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 6cba034905edbf..69c40c191ce4f0 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -272,13 +272,10 @@ static void tegra_smmu_free_asid(struct tegra_smmu *smmu, unsigned int id) clear_bit(id, smmu->asids); } -static struct iommu_domain *tegra_smmu_domain_alloc(unsigned type) +static struct iommu_domain *tegra_smmu_domain_alloc_paging(struct device *dev) { struct tegra_smmu_as *as; - if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA) - return NULL; - as = kzalloc(sizeof(*as), GFP_KERNEL); if (!as) return NULL; @@ -997,7 +994,7 @@ static const struct iommu_ops tegra_smmu_ops = { .default_domain = &tegra_smmu_identity_domain, .identity_domain = &tegra_smmu_identity_domain, .def_domain_type = &tegra_smmu_def_domain_type, - .domain_alloc = tegra_smmu_domain_alloc, + .domain_alloc_paging = tegra_smmu_domain_alloc_paging, .probe_device = tegra_smmu_probe_device, .device_group = tegra_smmu_device_group, .of_xlate = tegra_smmu_of_xlate, From patchwork Mon Jul 24 17:22:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13325102 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3D840C00528 for ; Mon, 24 Jul 2023 17:24:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:Content-Type: Content-Transfer-Encoding:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=R/uxLFw6T9ll/W7V4Vb06QW+koECiUEA49Foq4D3zXw=; b=OvCcyOaZdYnusOpr3MAJnnwbfI m9O4Y9HoWUmRLuQjiTT9fMLhvrZIcKZvabx+F3T4G9BQFN197VYwBEBN5JDX0M8smK55VqnUQEeSv xObi8aKmXe2mLA9XPlQyO8RVCVB4gMdJ83FI9nJde8jI6aQF8grhbOp7AXHJ2AqRrH/VMWzcXoCBl bPRf3XQJBMkTbEaD/wji774xfS7c7ok/bIdRKhQsX5VurEpa/0R8fso+89rRVr//ahVkzPJ3vnRyg e5qzOoyzO/jeKDEfl6U9rDVf0GYTtgYfV3qdVrqlL2kQ3rpY20B1O69Bvxr1084OYxejS6X6gj5YJ 6Rjn5c0A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qNzHw-0051L7-2S; Mon, 24 Jul 2023 17:24:04 +0000 Received: from mail-mw2nam10on2062e.outbound.protection.outlook.com ([2a01:111:f400:7e89::62e] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qNzGV-00502A-1m; Mon, 24 Jul 2023 17:22:37 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=UYtuvQtDIGWhoGu/ib56+qEWAvuFN85aqMuEPuRp0mlz47QpauscWdPNjVn8zlqzT1f5MtWhWZnU+10YaBYXHhW7TNE5MqCMBBRJp991V5tNPHuJTYKI8xyOFPKfuh8W4LqnQrhuWwYJ2zAjiJDD0ZfKpDdjZ9EQMaDCyZop3mtff/oEGHH8wUIaX/nEXp+E+lvv39iq03Px/YfUB2fDg82YG1PrrjiQ4XSPR9iVYqqkN2++0hKhIOa7z6ic5F4mYOX2olbyNbtEtK48uiZW9T+Nbf+L/MXBy7/h6e6Gd/uVy4IxjDapAvIB1/5PMR2VcwCzGRUw/+GfUp5fn/OY5Q== 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=R/uxLFw6T9ll/W7V4Vb06QW+koECiUEA49Foq4D3zXw=; b=oc4tD2Hpc+LYTYk43lhdTtG04g6J812c9LbDCb5s0BEKj5Wz6UYw9DoqBjjm2yN0v4ffdWQ4G9Af6ZRr9hAfGygHIcwpPLYp7Z4dcXgZ/r45zyHpvNdXlGLTOd1zGtrtkeQXV5MYKuV7XsfSdtKl9oWltguAb11mPnUAkgF4TZ6L790ou55TrfGQvdwmUa31GNS4aGV9gXuT9JIKa2qXJSRpAHV/aaacfiIsQG6RplXRy+wX5NX2Fz+qIoMOuwOXVNOfgFQQnF50anPm+IFm3QIWTeBOm2AqeGb2zq+RIHiaSb8HG+RI2O0Xv6MIuMvh7pvAtJw9cjAzlfLePcH86A== 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=R/uxLFw6T9ll/W7V4Vb06QW+koECiUEA49Foq4D3zXw=; b=AS3dQ8MuG09gZsjIO0SfUGZ3V3L7OooWFz0E1QbpYDG0QMXsd+6zls5wlU4BzdR9op/+rAdxyAskVw5z7UcI1Hk3IZVm4ZrPRK5XuAYf2SJLf1fslLhC4btRjU/mQ+M6vFSWIijXLqb5egE1ZquU4MS48wdUWNZ/9strVgfcDdBk5s808MT9viqdL1MalwoQRSk/qfmIBc8G2zdoFE6eleQv6fVq577f94R2M6vw0iAazTjVkSuFdDmGGhn1mUmkuDb/KAREL3+fErvya5aZIySXz7Bd2quETJpUdJ9HCf/Pa0AeVQD6q/fW6FY1p/g7f/3uZj02/bEeMfUC24sNsQ== 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 PH7PR12MB7353.namprd12.prod.outlook.com (2603:10b6:510:20c::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.32; Mon, 24 Jul 2023 17:22:20 +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 15.20.6609.032; Mon, 24 Jul 2023 17:22:20 +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 v5 25/25] iommu: Convert remaining simple drivers to domain_alloc_paging() Date: Mon, 24 Jul 2023 14:22:15 -0300 Message-ID: <25-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL1PR13CA0184.namprd13.prod.outlook.com (2603:10b6:208:2be::9) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|PH7PR12MB7353:EE_ X-MS-Office365-Filtering-Correlation-Id: cf2e99fd-6130-45cc-1662-08db8c6a87a5 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)(396003)(366004)(376002)(136003)(39860400002)(346002)(451199021)(36756003)(478600001)(6512007)(6486002)(110136005)(6666004)(54906003)(6506007)(186003)(26005)(107886003)(2906002)(316002)(4326008)(66946007)(66556008)(66476007)(7416002)(7406005)(8676002)(5660300002)(8936002)(921005)(38100700002)(41300700001)(86362001)(83380400001)(2616005);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: cf2e99fd-6130-45cc-1662-08db8c6a87a5 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jul 2023 17:22:17.7136 (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: 3k5d8oN+BlABMqq/bSbCMnw37Hw/aJWIG7k/EFWMOEfxXNJrh17tftd99x7LNbma X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7353 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230724_102235_647307_FFA03827 X-CRM114-Status: GOOD ( 14.29 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org These drivers don't support IOMMU_DOMAIN_DMA, so this commit effectively allows them to support that mode. The prior work to require default_domains makes this safe because every one of these drivers is either compilation incompatible with dma-iommu.c, or already establishing a default_domain. In both cases alloc_domain() will never be called with IOMMU_DOMAIN_DMA for these drivers so it is safe to drop the test. Removing these tests clarifies that the domain allocation path is only about the functionality of a paging domain and has nothing to do with policy of how the paging domain is used for UNMANAGED/DMA/DMA_FQ. Tested-by: Niklas Schnelle Tested-by: Steven Price Tested-by: Marek Szyprowski Tested-by: Nicolin Chen Signed-off-by: Jason Gunthorpe --- drivers/iommu/msm_iommu.c | 7 ++----- drivers/iommu/mtk_iommu_v1.c | 7 ++----- drivers/iommu/omap-iommu.c | 7 ++----- drivers/iommu/s390-iommu.c | 7 ++----- 4 files changed, 8 insertions(+), 20 deletions(-) diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index 26ed81cfeee897..a163cee0b7242d 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -302,13 +302,10 @@ static void __program_context(void __iomem *base, int ctx, SET_M(base, ctx, 1); } -static struct iommu_domain *msm_iommu_domain_alloc(unsigned type) +static struct iommu_domain *msm_iommu_domain_alloc_paging(struct device *dev) { struct msm_priv *priv; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) goto fail_nomem; @@ -691,7 +688,7 @@ irqreturn_t msm_iommu_fault_handler(int irq, void *dev_id) static struct iommu_ops msm_iommu_ops = { .identity_domain = &msm_iommu_identity_domain, - .domain_alloc = msm_iommu_domain_alloc, + .domain_alloc_paging = msm_iommu_domain_alloc_paging, .probe_device = msm_iommu_probe_device, .device_group = generic_device_group, .pgsize_bitmap = MSM_IOMMU_PGSIZES, diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index 7c0c1d50df5f75..67e044c1a7d93b 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -270,13 +270,10 @@ static int mtk_iommu_v1_domain_finalise(struct mtk_iommu_v1_data *data) return 0; } -static struct iommu_domain *mtk_iommu_v1_domain_alloc(unsigned type) +static struct iommu_domain *mtk_iommu_v1_domain_alloc_paging(struct device *dev) { struct mtk_iommu_v1_domain *dom; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - dom = kzalloc(sizeof(*dom), GFP_KERNEL); if (!dom) return NULL; @@ -585,7 +582,7 @@ static int mtk_iommu_v1_hw_init(const struct mtk_iommu_v1_data *data) static const struct iommu_ops mtk_iommu_v1_ops = { .identity_domain = &mtk_iommu_v1_identity_domain, - .domain_alloc = mtk_iommu_v1_domain_alloc, + .domain_alloc_paging = mtk_iommu_v1_domain_alloc_paging, .probe_device = mtk_iommu_v1_probe_device, .probe_finalize = mtk_iommu_v1_probe_finalize, .release_device = mtk_iommu_v1_release_device, diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 34340ef15241bc..fcf99bd195b32e 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1580,13 +1580,10 @@ static struct iommu_domain omap_iommu_identity_domain = { .ops = &omap_iommu_identity_ops, }; -static struct iommu_domain *omap_iommu_domain_alloc(unsigned type) +static struct iommu_domain *omap_iommu_domain_alloc_paging(struct device *dev) { struct omap_iommu_domain *omap_domain; - if (type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - omap_domain = kzalloc(sizeof(*omap_domain), GFP_KERNEL); if (!omap_domain) return NULL; @@ -1748,7 +1745,7 @@ static struct iommu_group *omap_iommu_device_group(struct device *dev) static const struct iommu_ops omap_iommu_ops = { .identity_domain = &omap_iommu_identity_domain, - .domain_alloc = omap_iommu_domain_alloc, + .domain_alloc_paging = omap_iommu_domain_alloc_paging, .probe_device = omap_iommu_probe_device, .release_device = omap_iommu_release_device, .device_group = omap_iommu_device_group, diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index f0c867c57a5b9b..5695ad71d60e24 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -39,13 +39,10 @@ static bool s390_iommu_capable(struct device *dev, enum iommu_cap cap) } } -static struct iommu_domain *s390_domain_alloc(unsigned domain_type) +static struct iommu_domain *s390_domain_alloc_paging(struct device *dev) { struct s390_domain *s390_domain; - if (domain_type != IOMMU_DOMAIN_UNMANAGED) - return NULL; - s390_domain = kzalloc(sizeof(*s390_domain), GFP_KERNEL); if (!s390_domain) return NULL; @@ -447,7 +444,7 @@ void zpci_destroy_iommu(struct zpci_dev *zdev) static const struct iommu_ops s390_iommu_ops = { .default_domain = &s390_iommu_platform_domain, .capable = s390_iommu_capable, - .domain_alloc = s390_domain_alloc, + .domain_alloc_paging = s390_domain_alloc_paging, .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group,