From patchwork Tue May 16 00:00:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 682283 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 E73FFC87FE2 for ; Tue, 16 May 2023 00:01:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343611AbjEPABR (ORCPT ); Mon, 15 May 2023 20:01:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245189AbjEPABO (ORCPT ); Mon, 15 May 2023 20:01:14 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on2053.outbound.protection.outlook.com [40.107.237.53]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 290A57D8B; Mon, 15 May 2023 17:01:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FTVcUGw9XBQ/CaUT+sjXSbdQMq3/yScqmUeFeI2m6yGoSIpqlGaiyU7tWeNw3Gkc1pHjDA3NLggHXmvp70qchHdmChaCNyBGi+3+esgI55jn7bGVcK9vUG/zwhhgBqhawnN9dfqn4gjn8spVgCImV56YL3WD1TfF6FOrgjxIcecHWbJGCQUp/Ph53giBjcu4gSEQ7OF9erHKTMRh1c9vsMe2+RAWNP3w60nvVPnr/4mmXfHVjHOCXt2DeE6ad9pxMrympe5zxIYLDSNKBtFN7ZYHOOOuZdTTdEXv/X2CjeimB14/huebc1FppTErznY1GHjnJ2tXSPCFWP+kEYMNJg== 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=lHXQMEUV4dYQbTI9uoUczyFRhnx7VT/tWXCvbexUek0=; b=XZEQfR1ICdLxGo2bI+SCMoUNxrPq7ZA3DmLHkNWAUgB8dtqKkOQYgOpgI04xOjFzlwWQHQ5cWRgnJP1cmmbuAFip01gtV2A8CTl6SdHaS3Q9J9vtl5LO3Sev9xmqnesyXtDMLJlZabCfDSI87NcSciObQwWbx9i6CMx8XkBnBS+GcaCOkHkoUlRpEmMcVp2mcXoNG3p0s2iq0QA8PMh4zkc8vrkk3Aji7Uu9oPrXDxEN0QAoW5aSSJWO+ZofIu8R909W3zrSH2yCPjZ8zepr++Z23cDJBCCcOx2LL7AiA0TfXLI2OCVcfW2EqC2XHMQUfg8TWrZQ7L4ZhOEeNGB16Q== 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=lHXQMEUV4dYQbTI9uoUczyFRhnx7VT/tWXCvbexUek0=; b=aOO939jwkglkcitxRxWt/xZNWdBm4s8vU/xYhd+pinyFebhDhaxB4U86k4ZkB0RQSyvvP1qPJcB9hbEf+Xo9nnX8o6xE4b+W7yyAGOgezY9VNYS+ZUuZfmzb+oU+PkUGIa0yWO4tcE+TetuZD1BQfJm3qBNwm0qDP9k4RMJ0K5nDTHM3AceifGzioEKsEBgC0w/skccUxowDnR/nZ7ByIGX9EqBK+kX6cz1pKHEoTyLcb3YLokmo7HX70llvUuEpFJ9nHYmdz3jbuX+p11oLY1//33/ICr8f7HTYlcwkKNlZ3/ZalukeQgjZFDvRt5dnAGQt4r1hs3cVoDvkQvnn/A== 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 PH7PR12MB6634.namprd12.prod.outlook.com (2603:10b6:510:211::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6387.30; Tue, 16 May 2023 00:01:10 +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 15.20.6387.030; Tue, 16 May 2023 00:01:10 +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, Marek Szyprowski , 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 , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: [PATCH v2 09/25] iommu/fsl_pamu: Implement an IDENTITY domain Date: Mon, 15 May 2023 21:00:42 -0300 Message-Id: <9-v2-8d1dc464eac9+10f-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v2-8d1dc464eac9+10f-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BL0PR1501CA0005.namprd15.prod.outlook.com (2603:10b6:207:17::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_|PH7PR12MB6634:EE_ X-MS-Office365-Filtering-Correlation-Id: 366b4628-7e43-490f-6a6a-08db55a0a320 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)(39860400002)(396003)(346002)(366004)(136003)(376002)(451199021)(36756003)(110136005)(54906003)(478600001)(38100700002)(41300700001)(7416002)(7406005)(8676002)(8936002)(5660300002)(2906002)(316002)(921005)(4326008)(66476007)(66946007)(66556008)(6506007)(6512007)(107886003)(86362001)(26005)(186003)(83380400001)(2616005)(6486002)(6666004)(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: 366b4628-7e43-490f-6a6a-08db55a0a320 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2023 00:01:02.5352 (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: NnKD8mry1EG3IuY7OoxHHCddR05IzlElZONQy3WDIOXB2G7dbdsUN2xoI6AVHPr/ X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6634 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Robin was able to check the documentation and what fsl_pamu has historically called detach_dev() is really putting the IOMMU into an IDENTITY mode. Move to the new core support for ARM_DMA_USE_IOMMU by defining ops->identity_domain. This is a ppc driver without any dma_ops, so ensure the identity translation is the default domain. Signed-off-by: Jason Gunthorpe --- drivers/iommu/fsl_pamu_domain.c | 32 +++++++++++++++++++++++++++++--- 1 file changed, 29 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index bce37229709965..ca4f5ebf028783 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -283,15 +283,21 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain, return ret; } -static void fsl_pamu_set_platform_dma(struct device *dev) +static int fsl_pamu_identity_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; + if (domain == platform_domain || !domain) + return 0; + + dma_domain = to_fsl_dma_domain(domain); + /* * Use LIODN of the PCI controller while detaching a * PCI device. @@ -312,8 +318,18 @@ 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_identity_ops = { + .attach_dev = fsl_pamu_identity_attach, +}; + +static struct iommu_domain fsl_pamu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &fsl_pamu_identity_ops, +}; + /* Set the domain stash attribute */ int fsl_pamu_configure_l1_stash(struct iommu_domain *domain, u32 cpu) { @@ -447,12 +463,22 @@ static struct iommu_device *fsl_pamu_probe_device(struct device *dev) return &pamu_iommu; } +static int fsl_pamu_def_domain_type(struct device *dev) +{ + /* + * This platform does not use dma_ops at all so the normally the iommu + * must be in identity mode + */ + return IOMMU_DOMAIN_IDENTITY; +} + static const struct iommu_ops fsl_pamu_ops = { + .identity_domain = &fsl_pamu_identity_domain, + .def_domain_type = &fsl_pamu_def_domain_type, .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,