From patchwork Tue May 16 00:00:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13242365 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 41B38C7EE3A for ; Tue, 16 May 2023 00:01:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343609AbjEPABb (ORCPT ); Mon, 15 May 2023 20:01:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45744 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343629AbjEPABU (ORCPT ); Mon, 15 May 2023 20:01:20 -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 A6E5F7DAC; Mon, 15 May 2023 17:01:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=SXd/5MNPcbwQt135mTWFBG1buAwqFWNEdvyb3aLn/4eKuFANN3Yy5cbu/bcdIjulNUiUtEk8JBuKorEDsJxq6FSP8DwV6Q29CAkK9JHoGadfjEl1rskr3TlCjTpJOaHo9cbK9bEMMzsRz0p6VFFmHpItbtZwY4UXoDFlHcX5Uc+5QxH+XDwIzZPN+8mhTizXfKQOsJR1q0G3GSVXbX56eC2i6ImHRD5ggAxIOFBjkyyVwENS9velONQI0B+YdSO0LVZS2dUVD7cWXPMZdUeo5CCWqn7lN5b4d1lG66q71YUSNa0gJ6KLwNF3yMEgvx88WpSlaCuqeiwTGZlDVSuUSQ== 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=mgiE9B5ovwAJjwP8itSJ2p1/toDwMqVQx8el4JOd1fs=; b=OWM77i6jFIt0I8rWdUR2RHu0V37GW7cI65TrXfFwvEMyfAxoxyn6YEtdyheJip46C9e4DEHtlUlb5KdBJcRmb5GSEZaaf7Euf4vPpJZne5juiyBlXcb48YC8KiSJftBtzmOih49SPDKpSh/s//H5PSQNzCLWNnWMqx8SWvPJ3KKdshCLCfICpN1SuihEckdSdwA977lPLFeN8sNwhM3HNMdiu7Gbo3z7meJpLlYSTRgeT7IlQuNKCBpNiG/Z6tpEczfB91M9TJ1a9jpLRbNAacdSVqLwDCcPZ8IeCrslZuXvQn75c7kiBF5Z2FTJyTD1gvLq+84+XHjhZXrDJYLofQ== 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=mgiE9B5ovwAJjwP8itSJ2p1/toDwMqVQx8el4JOd1fs=; b=fPPAzRfnzHYUCvtwLnkjDEaTb4JN8dTmyaPyuHgH45FM/jgGOF3dfU8AqKHAhDS1sM9ASGXK3TtEuDXGM6hWQ3PgqBKcXzNod5pSTOdnBolBoj5X/oNlxqMNZAYWZvYhOyknKJYsJL8n8t6aL7v2oRG7oFz7VjnNtUC2mufNUospWpNvARatYFSiNjte5s2xR3j9Qp8fkNXFSqVii57CQe3yYgPESMSt6kCvEebu+KiksujZpTIit/MrEvQwJtzHsvzIVe3wsrbvhk19De+KNeY+oULqzUiFRI2qu9k2RnN/MEo/UFtt5dYXb48A8dlZOH4zwME3/FN5GeXTMS/PPA== 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 00:01:14 +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 00:01:14 +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 22/25] iommu: Add __iommu_group_domain_alloc() Date: Mon, 15 May 2023 21:00:55 -0300 Message-Id: <22-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: MN2PR08CA0008.namprd08.prod.outlook.com (2603:10b6:208:239::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_|PH7PR12MB6634:EE_ X-MS-Office365-Filtering-Correlation-Id: ec653f6c-981e-48b6-9a3e-08db55a0a397 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);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: ec653f6c-981e-48b6-9a3e-08db55a0a397 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 May 2023 00:01:03.3160 (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: R4x3CfAsmKbF/2PbYih6Lth+QlUo4570hPPwVR6mZf6nqE2bel875lvy/HKUAVhX X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB6634 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.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. Signed-off-by: Jason Gunthorpe --- 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 15cdfca4011ef2..c4cac1dcf80610 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, @@ -1652,12 +1652,11 @@ 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); } /* @@ -1667,9 +1666,10 @@ __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); @@ -1679,24 +1679,24 @@ 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; @@ -1994,18 +1994,15 @@ 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; - if (bus == NULL || bus->iommu_ops == NULL) - return NULL; + if (type == IOMMU_DOMAIN_IDENTITY && ops->identity_domain) + return ops->identity_domain; - if (type == IOMMU_DOMAIN_IDENTITY && bus->iommu_ops->identity_domain) - return bus->iommu_ops->identity_domain; - - domain = bus->iommu_ops->domain_alloc(type); + domain = ops->domain_alloc(type); if (!domain) return NULL; @@ -2015,10 +2012,10 @@ 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); @@ -2027,9 +2024,23 @@ 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); @@ -3138,21 +3149,18 @@ 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; }