From patchwork Mon May 1 18:02:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13227768 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 AB1B0C7EE25 for ; Mon, 1 May 2023 18:04:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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=k5Vv3n3tvIrmLLvSOnV8yStbnCkNZJmCDGYS03Iec+M=; b=x6FaBpnnqqh2n2 6bRT65X8u4yStUkg/Bs2txINHe2ybWeWpiBd55gY38sQWxoSdVitLsVzYDMWbiAQytBpssu1+sYak 8xTQGgqoaEQcCY5/s3AQR79pQV4Gc6bcaRP7fp6e3s/nFLc56+zEAv96a3zAJctB1H19t2sS6tClV N/7EvTLvyIOe3j1lxbdrNn8js8WqM4JgVMlQNcz9FRj/0vj/UXyhJdoGpnLrHMKniQGIknoWnU/0f y/J+WbADdRvxz3iBd5NjZGehT5uL6wb61NKqruNMo/HIWT4jLlT92h4WJVgStTcw2o6msXR/xJpYb qlqwmYXXf379KR2GI5Mg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1ptXse-00GSuu-1x; Mon, 01 May 2023 18:04:08 +0000 Received: from mail-mw2nam10on20623.outbound.protection.outlook.com ([2a01:111:f400:7e89::623] helo=NAM10-MW2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1ptXrp-00GS1w-1r; Mon, 01 May 2023 18:03:21 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=hqjhm4HsuugUHh6JOe8SS5B2jBwmj3UOTqGSuCgHxnDWEel604unH+CC+Cvq26K2CzCXw+F1gVrmRH3wXOBh47jpdOO5QeLZVzlKX6nvTUT71Lx7VS7EruI6tEpBfH2S1CJ041m+Vxk5GTveUWrZaLyWj20k6Fy740R7QCxw4Pw+gpvkzuvpGrQ5RVzDsTWr7xSm19vwydmOI1m6PzwRZfb2eJN4Odqu/rjoqRONCoIouAJhSjTONInj4lvswlJp2BG7xof3FGZRnwYSE8Ueu8yFTFtVrNK526ex58I1UyaZX6i+0HEeFGNWhhrxMvncfLYJesgG3cxmMzjK4HruNQ== 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=vnqbXULXDkUekclXPK12wVkMvMx5s7sEMCBlgaNSyd4=; b=Bctb+rn+mQH1bO7ZPPhMXQXkAmP4qxEA6nXdZSlZ54HA+Gd/E3g6MH+q80gHJJMgxuGeNASH+NZ6jyuBTIIYzrmwkDb4bCZ7X5jSWoX3lISCjDMDIfGpr0s0KrqCxVRly0MgyeBJRH6Ybx8LwpBFVwAGmaiEXltr2fAtcMrc/O8FqtKNVkTwmjK9FrCWxK8ckvgC31PH+akYV8oomVi25Gt4dQdxRQ2ECGh/x8XwVa0QU1bMb9IAS1+1bPRxYnyRCJUoZk84H0Lu10A7hvqqP3cZ3Uxmy85dGzs19+bbS/mrvbqm7A7XeOYLOMZBhjIMUbTx5tADmTqoXAcaOwF+cQ== 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=vnqbXULXDkUekclXPK12wVkMvMx5s7sEMCBlgaNSyd4=; b=MnXRHP6eupl670eezi61zwOMIe6N88n3ACKzl45ski22efJrAOry0lnHSHUxeylH6V+HQml0PXUaMNR6fdy2PX3Jjq8bm1uuhr0ypOgGWTzgvuTY03g9LgNyilinvwFmlFVysYMZt1Uj0vWHb8uhovPPc19NBoRxrqk32fjRouaIsriOicfPudrT36GF0MVeFJ02czhdsphIVDzWbOK3niVJXm4xJt/eDlc2O29M6SdtYzIlVa+eZb6nur5Bj5ZB0WhqPN6WCIjJa8G6kmr4tBNn9gKahvCmzHE3SNCpiY9RQ9i0GGLPH+zfW7pR39uOlUEhpkc/GnG3oAildkdofg== 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 IA1PR12MB6457.namprd12.prod.outlook.com (2603:10b6:208:3ab::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6340.30; Mon, 1 May 2023 18:03:09 +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 15.20.6340.030; Mon, 1 May 2023 18:03:09 +0000 From: Jason Gunthorpe To: Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , 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, Marek Szyprowski , Matthias Brugger , Matthew Rosato , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Niklas Schnelle , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang Cc: Lu Baolu , Kevin Tian , Nicolin Chen , Steven Price Subject: [PATCH 12/20] iommu: Remove ops->set_platform_dma_ops() Date: Mon, 1 May 2023 15:02:56 -0300 Message-Id: <12-v1-21cc72fcfb22+a7a-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v1-21cc72fcfb22+a7a-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR18CA0004.namprd18.prod.outlook.com (2603:10b6:208:23c::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_|IA1PR12MB6457:EE_ X-MS-Office365-Filtering-Correlation-Id: 0330491c-24e7-4606-f8c7-08db4a6e50ac 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)(39860400002)(366004)(346002)(136003)(376002)(451199021)(6506007)(186003)(6486002)(26005)(83380400001)(2616005)(4326008)(5660300002)(316002)(66476007)(66556008)(66946007)(6512007)(41300700001)(8676002)(8936002)(7406005)(54906003)(478600001)(6666004)(2906002)(110136005)(36756003)(7416002)(86362001)(38100700002)(921005);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: 0330491c-24e7-4606-f8c7-08db4a6e50ac X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 May 2023 18:03:06.5986 (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: SqJTt/RS2dCX0CvQsUhv2AQwRJuN5JzXnvMITii6Q2w3m2c76Vh4+3Q4Koi4hKCz X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6457 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230501_110317_656078_601BB46A X-CRM114-Status: GOOD ( 20.35 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=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. Signed-off-by: Jason Gunthorpe --- 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 8b9af774de68f1..fb646765a87f47 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -2192,21 +2192,8 @@ 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 @@ -2242,19 +2229,15 @@ 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; } @@ -2868,9 +2851,6 @@ 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 427490b5736d40..f6a28ab78e607e 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -231,9 +231,6 @@ 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 @@ -265,7 +262,6 @@ 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 */