From patchwork Wed Sep 13 13:43:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Gunthorpe X-Patchwork-Id: 13383154 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 60CA6EDEC65 for ; Wed, 13 Sep 2023 13:44:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241135AbjIMNoX (ORCPT ); Wed, 13 Sep 2023 09:44:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47800 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241128AbjIMNoW (ORCPT ); Wed, 13 Sep 2023 09:44:22 -0400 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2046.outbound.protection.outlook.com [40.107.243.46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D62B19B1; Wed, 13 Sep 2023 06:44:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=nLxnavlV5bxb7vUArqfyM5S+JzkLuQqgkQo20B2pTqDwTbqBAEis0nOvCxKdJ7HgzBVAZ9pFlJvwRjyEVNobn1CeVM+7c6fZb75aThuq158HgCS78g7P16C3aaIsKyxSrBm/B39bqcbITFc+FlEo3xjwvhRUTmTz9CiQ8odX26jJK9Y5KY7TD5TbJEY3S2JJDY76l0WhCEnyqxdhPi13TOF975lrI6fwpYs0VJJW1yTbgSveFBLJhbeHunumdXUGf9Q/JiljjeCeAY6QVk/qyjXn/LiRoAtTFLLEYJRWYJjvT+vPKcwjZJ5ASYRNiI9OcTKTa9eFDvb1miiLgPvbhw== 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=IyBZs19eo0b293YxJzU3W9NoQ5cfh4N5lonYgZF4pnQ=; b=UQ8Cp4cSOfrTqlWL3PXUh4KjIi95D7GDisXCBLCLCCzrNhrJPtWLjf15SK4XeDIvhg2YBgdCPJ5wAfncOI43PMfmB7ssCCgfG2Z5ipK1xWn0Pz0G+/h4JYZEoJ1BbtYgYXY6ZfbDHjLBC5ZWxd2sttSK1dy7rIVSnW3d7GHr06q5pOtehgo8+bsnCnPmslf32y+pj/VrAR6ZoaZ4XIYZC5gIB1lRisBHkf9Nrd5ieh3+vXwCg6IGYCXgF6EbV06l9QoIKPqIezEUc6KnM3rsCixlI/STfT9VsRA/8nLa1gJDqatQZRyRR4Noh0DHQF3u8SYOaLqQeUqt2HPXEY0Gqw== 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=IyBZs19eo0b293YxJzU3W9NoQ5cfh4N5lonYgZF4pnQ=; b=nzdXGt5B4Qm0FDfVwJsBHZFunftLgFLayxEJ+r+77Rf18rXhjK8uzU7Kjy5wlG+LqV079EYeR2LvstqZQuOiJYnIERorLb51LU6g3ZMIwppSOhtwocgKuoQW9K8mWgVnITXlUP8zWTI74eH+NF2bNxo9paITbcG5vV61oYsPbfaJPAqt2EqHUQHCnmEbdSKjxA/KU2UXFf+EKNe7T2IZqt4FQrk/PNPfLMpP5Mo5SpOaUZpzWP8pKkdJuXW0t9f8lNPTcn0+0L/0vb+SqhQxUIqMW8WhG5hWFNP2G6C3LHuojpZtdeaL9IknVw3P5+P474eGb4DbT0HyMffjSSNlew== 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 SJ2PR12MB7848.namprd12.prod.outlook.com (2603:10b6:a03:4ca::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6768.31; Wed, 13 Sep 2023 13:44:14 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::faf:4cd0:ae27:1073]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::faf:4cd0:ae27:1073%6]) with mapi id 15.20.6768.036; Wed, 13 Sep 2023 13:44:14 +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, 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 , Jerry Snitselaar , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: [PATCH v8 17/24] iommu/ipmmu: Add an IOMMU_IDENTITIY_DOMAIN Date: Wed, 13 Sep 2023 10:43:50 -0300 Message-ID: <17-v8-81230027b2fa+9d-iommu_all_defdom_jgg@nvidia.com> In-Reply-To: <0-v8-81230027b2fa+9d-iommu_all_defdom_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR03CA0006.namprd03.prod.outlook.com (2603:10b6:208:23a::11) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|SJ2PR12MB7848:EE_ X-MS-Office365-Filtering-Correlation-Id: c54f2fc9-c944-4eef-e6d0-08dbb45f8457 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:(13230031)(376002)(366004)(136003)(346002)(39860400002)(396003)(1800799009)(186009)(451199024)(83380400001)(86362001)(6512007)(921005)(66946007)(110136005)(2616005)(478600001)(107886003)(6666004)(38100700002)(6506007)(6486002)(26005)(316002)(4326008)(54906003)(66476007)(8936002)(66556008)(41300700001)(36756003)(8676002)(5660300002)(2906002)(7406005)(7416002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: YebB62na13L8rYKGVWXCeFt7rZeq8hOUJEmHECC6Y9fDES4hvl31AVdxBg207cGKrO8q9atCTrlXQvDC58WBcnyD7RcFiFuKcjExHXzNyJlQMmGUhjAdkVr/J7NWWt/bDhQFHG4JiwEK3LjUq5a1+qAXZqQtaFCFBRk1ocGlsxb99J0vMqShM8PT60M8lBS/I4SsYdYEVZf/nt21Q7SOIbIdF5YAYNY8CWRHBmIhLvYGq/j7ySRmuyfGeWZIwOR9qqZ4v2q7qWfVz9rPrOvIKoBPEHsnoyS2/LiDmpKk5LsCJYgMayQ4MoKhxUkpRmQtU8RCARFBRWyX75xtK8oyL8D3GbkfqMvUs2IGhZ/rdynLVx1ySng3X0tcVaxdIMMk5vAIKnoMQVqvOiXexwSLEB1cdcWl/4mvAk4CUGEo+/+oSDGeewkrceyTAjSX88vY5wmoHZ/bPeD7wFSeAAro23in+D19dR5g6Qk5DMqYI6qJaGwm/InaI3e+1zSxuCNGNFvP6bWE43XuPsPjaX2TyuhUcfFfjz/CkSQZZh0jVhTPck4xPf4h/JXkgArWifakZeze+Oa4XM3b4OnYmVqFmCTMQbiZS1xGClCLNuT2b2DYl/nGDRTM+aUmF+SRSKfTsiOg+UGzz97dieCF77rtOm9I1bh3BZKFjme0BMcRT3eePsSlGcZUyD+nPuofRQfm0NdY6rkcl7luuNHvSuHHWfNuv/nburQRb3skYLe/jUGt2XMn7vYVXYyK+nUnT1wjwdVGHukL8XPQVv1/22oqSFpmTMM4pKHF9lcaBmiTLVLvjsYf7XAE2FGtgwZm3m9PRGfUIHqSmMEFw44Pxu8gs8t+w5FaHrfaF/jctMVzpYW6jeIUHfHVTEZ000fYdnvOsPJpmeSMBDre7qdBtjCgKkWgvPIus7MzIes+0OTjsIeUGEs4dG3Tbf4WTqBZEUUl+e/69wHFT+wkZuRIn9m7zm+dAROnSXo3nweYE2ENEI6to9/bFx6ODVkdwG6V5HlgxaOun0J3Zt2GikceGHn3H9EOHlZHpFP5n0NuTdSDR50gIhzIHu+jTUzcMSmEEkvqyfhGq0Ri3TX7T/7cH09Wq5oWngGRD2UBB3i4IN3mN6F16l/fazAKsjFjy1OFVtbnPuxqvdYyua28Jqzq2iovC9S7IpxlHZDiL5XOdjWRRCshkOmSocWbHmFh4uyiqRvJ7X4nGGM17qdb/qCVVn23YnT4ouhchBcWUq4rPOSz9OAJz3+QwxtubblrDXA5n1ABoBTXBMtvC/r5CVtAAtw721QgCf1ZAFBeCFYb4HCnmhCxksGFfnTlRExxrFNpJOgxOf5Y2bLPPWzw39zEM++H7v9lfEBSgwXMJFm75c+XC1MMSgqFiFMvSIzQH6LCUB+8gFVWxEg7x9bt5heqNFqAJGnkMiy3xxNwmrR+v8PYXYgjkB3z+Pqs/Ok3ll8IYhHd5rQe4xfJFuLJiizgBKDS3uF8toFs2tZrWmPtxUru3xpq7jI6ZzJb86EaJe05BO4GpXzTQTFia2/JLF0iBlGl1CL9ns1uzEHk6nogCI/9ijUYqIY0WKUYfK5NvA98kldf X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: c54f2fc9-c944-4eef-e6d0-08dbb45f8457 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Sep 2023 13:44:13.9915 (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: 2scoyhghANimNrzCG2HmbIZZO7VyGw3CUkFF3l45r3wIS6LPz05aqZ6nGr+sOE9i X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB7848 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@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. Also reverts commit 584d334b1393 ("iommu/ipmmu-vmsa: Remove ipmmu_utlb_disable()") Reviewed-by: Lu Baolu Reviewed-by: Jerry Snitselaar Signed-off-by: Jason Gunthorpe --- drivers/iommu/ipmmu-vmsa.c | 43 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index 65ff69477c43e4..04830d3931d239 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -295,6 +295,18 @@ static void ipmmu_utlb_enable(struct ipmmu_vmsa_domain *domain, mmu->utlb_ctx[utlb] = domain->context_id; } +/* + * Disable MMU translation for the microTLB. + */ +static void ipmmu_utlb_disable(struct ipmmu_vmsa_domain *domain, + unsigned int utlb) +{ + struct ipmmu_vmsa_device *mmu = domain->mmu; + + ipmmu_imuctr_write(mmu, utlb, 0); + mmu->utlb_ctx[utlb] = IPMMU_CTX_INVALID; +} + static void ipmmu_tlb_flush_all(void *cookie) { struct ipmmu_vmsa_domain *domain = cookie; @@ -627,6 +639,36 @@ static int ipmmu_attach_device(struct iommu_domain *io_domain, return 0; } +static int ipmmu_iommu_identity_attach(struct iommu_domain *identity_domain, + struct device *dev) +{ + struct iommu_domain *io_domain = iommu_get_domain_for_dev(dev); + struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); + struct ipmmu_vmsa_domain *domain; + unsigned int i; + + if (io_domain == identity_domain || !io_domain) + return 0; + + domain = to_vmsa_domain(io_domain); + for (i = 0; i < fwspec->num_ids; ++i) + ipmmu_utlb_disable(domain, fwspec->ids[i]); + + /* + * TODO: Optimize by disabling the context when no device is attached. + */ + return 0; +} + +static struct iommu_domain_ops ipmmu_iommu_identity_ops = { + .attach_dev = ipmmu_iommu_identity_attach, +}; + +static struct iommu_domain ipmmu_iommu_identity_domain = { + .type = IOMMU_DOMAIN_IDENTITY, + .ops = &ipmmu_iommu_identity_ops, +}; + static int ipmmu_map(struct iommu_domain *io_domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -849,6 +891,7 @@ static struct iommu_group *ipmmu_find_group(struct device *dev) } static const struct iommu_ops ipmmu_ops = { + .identity_domain = &ipmmu_iommu_identity_domain, .domain_alloc = ipmmu_domain_alloc, .probe_device = ipmmu_probe_device, .release_device = ipmmu_release_device,