From patchwork Fri Jun 16 19:02:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13283167 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 4F1A9EB64D7 for ; Fri, 16 Jun 2023 19:04:28 +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=uoJsddiI93wF+rGaRLhL41ijn6myQrhXZTM020E+Irg=; b=zDqDjgyqOMSm7C k2VJE3pWMOs380YNi+72WCQm6QBNvTTN5xukozGPiFVU/sWLIV8SFUrk1SZyMWHCn5G9epXa0QU4Z laANRwH24HSFTOJit6neRF4nhynBRGbj9C/CpLq6x213+ofIhy91tC8BLPKPKfw62D3SGeX2vqSZO P0SEXy6F1zGEM/7H+EyCd+MtKeHtJgL/5z24VHQ/ZXZJppeaHRRKGIH5vCiJ33Pk20Kf4UrRPatqV T4CWiSMTalav5LbWXcLrVkbgdHLFnivZP44cUdYp9X8Uz04VQL/5dgmfQraowjfErPpcxtJdogLpN fRc3/vzFw3uMVCav2U7w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qAEjn-001Xw8-2Z; Fri, 16 Jun 2023 19:03:59 +0000 Received: from mail-bn7nam10on20620.outbound.protection.outlook.com ([2a01:111:f400:7e8a::620] helo=NAM10-BN7-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qAEiy-001X3y-0K; Fri, 16 Jun 2023 19:03:10 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=C8gVspyDOwr3y4MD+SBZjp9CkVJz+5KtXRp4ge20xTBludg8ANuOJr4ILyMf2u55l37kw6yYwlZ0TCq51nf5Ts+WxySDkj+9yTME6ptyyzqLgt1IuiV6oIqmvevqStZlpuQdmGvvOPGobKMIqvl9K4gDOtLKboyQ6SlaDF1b98oE4CTOP3zYc+CFoZ2Hszep1AgGU6jVdBpFq/O744M+BbeFTmw8h82XvCzd+o7URhIxVT1ZIr7BWwPSR8cOPa9lD2vKwaNPgNTvu2puZG9fPEuL0w6QTqvL1ZlxVotvfpqS5yhO13XevJy+fZmFvlNF6NUCHqSjL5UZ65G2rHmWuA== 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=UGJ9OhSGaMcQ94+sOuAW3uy5BsT4kqLXHivmJ7O0hfg=; b=jJLG9BikP1BbOo3i89CU7HzWNEOswaDcP1JykTUvN9JlD+4LhR9B3lvsHvj2fyFZD09e5irUlbZCr9gelxI8Rq9PZYH7kuKVdRLhtlPa+6B55BMCiXcaN5kaALUCm2XhVJZjDTR+JyKYydAcGxmHp2fzyYczEm/UDO9c8vEtsW2Ic7v2BYysHOjZFsL2BPJPQycVAl6on1hFpM2Y2L07cKtibLuM79MQNRCw5rZ8UXgJrrslPS4phc1FqgSikeikoniMRRK3s6Swb2X1dRkOlTH2XyBnpxqIkn/tXBNfAcPqPdVC15sUKJCZ/31xxS1tJWl5uk2s24YGej4aOsdNww== 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=UGJ9OhSGaMcQ94+sOuAW3uy5BsT4kqLXHivmJ7O0hfg=; b=Xx83ko7vPjX03xpNDGdXJqZsMRhgAvDtb+3Wk8w1Tg4xKxgpGtL8LMIXivX6KcUd8f1lZcoz2MnsszwCcvpg2J4dp+fjU58OKd7/6Ssv3ktpCqRLQoHRmoaQ6eA3HYxGBFkNxPMCwhIWnq5c+RotsBuRFkyiGrI8hWWXFbXejXZOEGeT7UKn1mavMX9tkkHcQ00jzJzeh1z63W3ERuAF48B2wilDXnmrkD0Uvlxc08p03EHjmCT0Jrl1DxAi8280m2QDtMiuLAYcSncIV7XcBIJOfj3I1s65NeB/HUoMdZm1bEl25JKed2IdNhJ0nG11kfsJtjDH12f8QGhewD79nQ== 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 SJ1PR12MB6051.namprd12.prod.outlook.com (2603:10b6:a03:48a::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6477.37; Fri, 16 Jun 2023 19:03:00 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f7a7:a561:87e9:5fab]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::f7a7:a561:87e9:5fab%7]) with mapi id 15.20.6477.037; Fri, 16 Jun 2023 19:03:00 +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 v4 22/25] iommu: Add __iommu_group_domain_alloc() Date: Fri, 16 Jun 2023 16:02:51 -0300 Message-Id: <22-v4-874277bde66e+1a9f6-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v4-874277bde66e+1a9f6-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: BLAPR03CA0087.namprd03.prod.outlook.com (2603:10b6:208:329::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_|SJ1PR12MB6051:EE_ X-MS-Office365-Filtering-Correlation-Id: 2da2cd77-dde2-494b-12e9-08db6e9c4b26 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)(346002)(39860400002)(136003)(376002)(451199021)(2906002)(83380400001)(2616005)(36756003)(86362001)(921005)(38100700002)(8676002)(8936002)(5660300002)(107886003)(66556008)(316002)(478600001)(66476007)(66946007)(4326008)(6666004)(6486002)(186003)(7416002)(6506007)(54906003)(7406005)(110136005)(41300700001)(26005)(6512007);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: 2da2cd77-dde2-494b-12e9-08db6e9c4b26 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jun 2023 19:02:55.9525 (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: VHSd87hHy9pS40u/7zbdQwYD70LuJHgvuV4lNkZUa0OxkUT21Jd7SYu0dzqyEdNH X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6051 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230616_120308_174723_1F3E4FAB X-CRM114-Status: GOOD ( 20.53 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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 --- 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 98b855487cf03c..0346c05e108438 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; @@ -1984,19 +1984,16 @@ 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; @@ -2006,10 +2003,10 @@ 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); @@ -2018,9 +2015,23 @@ 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); @@ -3129,21 +3140,18 @@ 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; }