From patchwork Fri Jun 9 19:56:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 690957 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00561C87FDD for ; Fri, 9 Jun 2023 19:56:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232148AbjFIT4m (ORCPT ); Fri, 9 Jun 2023 15:56:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232199AbjFIT4f (ORCPT ); Fri, 9 Jun 2023 15:56:35 -0400 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2063.outbound.protection.outlook.com [40.107.243.63]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DBF2E2712; Fri, 9 Jun 2023 12:56:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=DUhaSW6FLAKsF22ZQkxvR5mfvdwDD7ntvIPEJu1oO+QchS15kTr9eMZPB9YWc0e5jT0SpbCZ/s82CbfJkVXUgjKYssxJe+MwHG/deiNWMJSVHxfl3DirXjVf1c27JqyFk+PFFHqZTTTt7v5EzOLRhPRh6ofwyUxmnV2w0nGB6nIFHtjx8yOq3WAnzvxUCawvC7GjCG4qlz9Nqt9bnrmFG6+H3f6xN+mWbL9gUPaMFjYAUSwfxIhkrwI/pSEwixr36xOGfPiUhbKlVnccdHO7aPpdln1p2V5WdR7GgsOF7faTARYVFu+J9obkVXBukhRjumrWd0JpvhQN4Bx3eRjaBw== 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=JplaZHxMiUJROKD+qTnd9x2wQ0YQIobZhUNJsZ+z69o=; b=YsGO0DZcsA8XNwY1re1ayIHExIBXGVVTn5Xt6oBRUEurDDvJvg7cfRnzk3l/gEaB9JlO8daGCi2ERV3zJkLFQOGxdI1AWALZLHFIU0B/s0/7enI8XDjJfSM78HEuKrAwb6Y6ZiSq82bHrOS+9OEjqmMo06GUdo6s6aD8TJSpKlYwRfAWRvCga5gborwHcWS4PjGfM+2P7aCXUhK5gPdtMfHRsOYioCE70QEDn7KlH/2CyeGDSpzyuSVi95bsTJCYLifaQcT2qCCEIx67tlbOVyRApcpNyrFnJhLQu7yvHxqlUFLSjmOlZEQX03vHYTxaqiIF50Ux72Om7x5uvk3dmQ== 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=JplaZHxMiUJROKD+qTnd9x2wQ0YQIobZhUNJsZ+z69o=; b=SYWfI2E08V0MZD2zP5Z2khMoHV/VlfnS4F1b3JzKvT0MR3mY/p79+QvoFPcppaQmFvnFxS4aD3/zGOcKAx6ps3KqYixKxueSrFsnJzwPYPNrgqVpoGxe19cSmeAtv1+abHeEpaU4MhsttGjAdLSlcZRb3BFRf0GgoGCmFRnazGShSR5wJBQhXOSd6EY31oM2QGWTZ1kkZZbXIKpcs0ARMYWSQByol1AxAXOXGQrUebawInJt2vF7ULWa0yom6b7rVXYExtLrYe5DYhQv9hH6/L1pQp6M27SXTHOpMVaCT7Puui68TFBzR2PA1lPZihvFh/EjfvmW2tQz3HyqdQCaDw== 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 MN0PR12MB5785.namprd12.prod.outlook.com (2603:10b6:208:374::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6455.36; Fri, 9 Jun 2023 19:56:24 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f7a7:a561:87e9:5fab]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f7a7:a561:87e9:5fab%6]) with mapi id 15.20.6455.030; Fri, 9 Jun 2023 19:56:24 +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 v3 17/25] iommu/qcom_iommu: Add an IOMMU_IDENTITIY_DOMAIN Date: Fri, 9 Jun 2023 16:56:05 -0300 Message-Id: <17-v3-89830a6c7841+43d-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v3-89830a6c7841+43d-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BY3PR05CA0049.namprd05.prod.outlook.com (2603:10b6:a03:39b::24) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|MN0PR12MB5785:EE_ X-MS-Office365-Filtering-Correlation-Id: 2d044f47-6379-4147-eb4f-08db69239947 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)(136003)(39860400002)(346002)(366004)(376002)(451199021)(83380400001)(7416002)(7406005)(110136005)(478600001)(8676002)(8936002)(4326008)(86362001)(66476007)(66946007)(921005)(66556008)(5660300002)(38100700002)(41300700001)(316002)(6666004)(6486002)(36756003)(2906002)(54906003)(6512007)(107886003)(186003)(26005)(6506007)(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: 2d044f47-6379-4147-eb4f-08db69239947 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2023 19:56:22.1349 (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: weLx1i3Iq+qh9NLdHRht027kguqogtdFSq1+rtL1PePc/rRzW0IY/nbsgnstUyp/ X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5785 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.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,