From nobody Tue Mar 18 00:45:56 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; arc=pass (i=1 dmarc=pass fromdomain=amd.com); dmarc=pass(p=quarantine dis=none) header.from=amd.com ARC-Seal: i=2; a=rsa-sha256; t=1686107331; cv=pass; d=zohomail.com; s=zohoarc; b=HCiFp1wVvUSCk4jHWi00lzJijjAfGppv0q4vHWMW1XwJ+FcE5UApqHBRjhOPl8aQkL3EHgTIkljSc4lcgp3IAED0jq9GZJdxs+9AScJtdkWPSAdnj9lIRokKZ35sD3PCjrj7bee+/6fzy5lfaezH/7C8VrP0XAwxZx8y0gOXewY= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1686107331; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=wRrQWmRSzu/GIUmuJ2fEbC87ERNVvfs7J7zPQvkONhA=; b=iSPmMQBF2rYVlDMhL8oJJ4MkJ9wXD5B1tAB8UU/tx5fBv7u2D/N8RZOdHlZB2J4JbRO9z1GuOgzQOsiF8bKS/o2LAqyX3I/ql5ywuMehPAfnEyQVdFX6kowLi+StNGeCqXMKcZyMbq4SMDEslYQ8NDoBSqg4S7pmUQ+IkIwPNew= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; arc=pass (i=1 dmarc=pass fromdomain=amd.com); dmarc=pass header.from= (p=quarantine dis=none) Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1686107331678603.8990897789457; Tue, 6 Jun 2023 20:08:51 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.544326.850030 (Exim 4.92) (envelope-from ) id 1q6jX5-0005wS-07; Wed, 07 Jun 2023 03:08:23 +0000 Received: by outflank-mailman (output) from mailman id 544326.850030; Wed, 07 Jun 2023 03:08:22 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1q6jX4-0005wJ-T2; Wed, 07 Jun 2023 03:08:22 +0000 Received: by outflank-mailman (input) for mailman id 544326; Wed, 07 Jun 2023 03:08:21 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1q6jX3-0005Dg-JF for xen-devel@lists.xenproject.org; Wed, 07 Jun 2023 03:08:21 +0000 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on20615.outbound.protection.outlook.com [2a01:111:f400:7e83::615]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 8d5d8bd0-04e0-11ee-8611-37d641c3527e; Wed, 07 Jun 2023 05:08:19 +0200 (CEST) Received: from SJ0PR05CA0035.namprd05.prod.outlook.com (2603:10b6:a03:33f::10) by IA0PR12MB8280.namprd12.prod.outlook.com (2603:10b6:208:3df::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6455.32; Wed, 7 Jun 2023 03:08:16 +0000 Received: from CO1PEPF000042AB.namprd03.prod.outlook.com (2603:10b6:a03:33f:cafe::df) by SJ0PR05CA0035.outlook.office365.com (2603:10b6:a03:33f::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6477.19 via Frontend Transport; Wed, 7 Jun 2023 03:08:16 +0000 Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1PEPF000042AB.mail.protection.outlook.com (10.167.243.40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6477.13 via Frontend Transport; Wed, 7 Jun 2023 03:08:15 +0000 Received: from SATLEXMB03.amd.com (10.181.40.144) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Tue, 6 Jun 2023 22:08:14 -0500 Received: from ubuntu.mshome.net (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 6 Jun 2023 22:08:12 -0500 X-Outflank-Mailman: Message body and most headers restored to incoming version X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 8d5d8bd0-04e0-11ee-8611-37d641c3527e ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=XbiBz0kecpBhF2DYbPmGd/kLtbfs6Ca8+4/xGF44TLE43g1wMSonzZjHcFFWTZbIFHXRpwDNV/cDMTSZvYliYg1t30LqUzqgbqseVRXdKT3sosFNdUBs+ScX2yiHKLPjKZ69qjoIL7PtEqGLfbjzMR9ytoReA0FXvfJ10A3NYYBN7sNOeIafGBtsOnDWmB8TM181gaYnhUJrsp91sU0wZTKF6zzlXzOX1O5q6lsHSr/Fqjv7rr30CVI8CJmsivZzP3HUbKxGEZhEyu9yeTkTZmGFsS34SDBXJHGbR/81UhObqrqFtGYg/hGf1V2xf4RxTsy8f9B7x7lT9BcLRlDh3Q== 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=wRrQWmRSzu/GIUmuJ2fEbC87ERNVvfs7J7zPQvkONhA=; b=CSYcLwQAQD4HXLEzDUGCCQSTUMN57BX8GsuIlki6kdeUsidwsGx5nRenFJ/xnLpDFCaQI0+yGjqUZt2yHXtzVZfES6GVjepeeG0LOLYC3kg+KJFMeWr/GcohWSJ2YvgqA4KOFJ3Hn4WgN6M3yyTvZtnc/BArUHNpNGJjgAQuOlgeI86ghBpTJ6zUMfEa6T/6FTnFd8I+Lpab2Savz5Q1GHniGTcmX2DaBOvTRoWcwJ0THi5GIHizS1s/OW7/EuPtjxEpLPFI+HmPWyar11gYuHyATPUPpLj03VXd6gTUNmt11Hib8J0mfYStGxp5c2JYMy4ZY2FURLBIJJyzv7F5qg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lists.xenproject.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=wRrQWmRSzu/GIUmuJ2fEbC87ERNVvfs7J7zPQvkONhA=; b=Lk/gF79vHhHHUMVSDVYBPx9GMbPmjMrDnZTmCf6TAtVn5v1vR9H1T4qDgc9juPdPbfgvsGKRefYpVUArPCPExm9x56z/yi7OYVtnpRm3FGWdZsNTQ6s/+AhXGbcdeqvvUfxOWljsUNIuvJRfIA/TA5GCIQiRoEgCW+nc9B0L5/o= X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C From: Stewart Hildebrand To: CC: Rahul Singh , Bertrand Marquis , Stefano Stabellini , Julien Grall , Volodymyr Babchuk , Stewart Hildebrand Subject: [PATCH v4 7/7] xen/arm: smmuv3: Add PCI devices support for SMMUv3 Date: Tue, 6 Jun 2023 23:02:20 -0400 Message-ID: <20230607030220.22698-8-stewart.hildebrand@amd.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230607030220.22698-1-stewart.hildebrand@amd.com> References: <20230607030220.22698-1-stewart.hildebrand@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042AB:EE_|IA0PR12MB8280:EE_ X-MS-Office365-Filtering-Correlation-Id: 250657cf-1483-4a7b-4f46-08db67046fae 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(376002)(346002)(136003)(39860400002)(396003)(451199021)(40470700004)(36840700001)(46966006)(36756003)(54906003)(40460700003)(2906002)(82310400005)(478600001)(86362001)(41300700001)(5660300002)(8676002)(8936002)(82740400003)(316002)(44832011)(356005)(81166007)(40480700001)(6916009)(4326008)(70586007)(70206006)(83380400001)(47076005)(1076003)(2616005)(26005)(186003)(426003)(336012)(36860700001)(966005)(6666004)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jun 2023 03:08:15.2719 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 250657cf-1483-4a7b-4f46-08db67046fae X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000042AB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8280 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1686107333641100001 Content-Type: text/plain; charset="utf-8" From: Rahul Singh Signed-off-by: Rahul Singh Signed-off-by: Stewart Hildebrand --- v3->v4: * no change v2->v3: * rebase * invoke iommu_add_pci_sideband_ids() from add_device hook v1->v2: * ignore add_device/assign_device/reassign_device calls for phantom functio= ns (i.e. devfn !=3D pdev->devfn) downstream->v1: * rebase * move 2 replacements of s/dt_device_set_protected(dev_to_dt(dev))/device_s= et_protected(dev)/ from this commit to ("xen/arm: Move is_protected flag to struct device") so as to not break ability to bisect * adjust patch title (remove stray space) * arm_smmu_(de)assign_dev: return error instead of crashing system * remove arm_smmu_remove_device() stub * update condition in arm_smmu_reassign_dev * style fixup (cherry picked from commit 7ed6c3ab250d899fe6e893a514278e406a2893e8 from the downstream branch poc/pci-passthrough from https://gitlab.com/xen-project/people/bmarquis/xen-arm-poc.git) --- This is a file imported from Linux with modifications for Xen. What should = be the coding style used for Xen modifications? --- xen/drivers/passthrough/arm/smmu-v3.c | 76 +++++++++++++++++++++++++-- 1 file changed, 72 insertions(+), 4 deletions(-) diff --git a/xen/drivers/passthrough/arm/smmu-v3.c b/xen/drivers/passthroug= h/arm/smmu-v3.c index 8842db1ec07e..427946e68f9d 100644 --- a/xen/drivers/passthrough/arm/smmu-v3.c +++ b/xen/drivers/passthrough/arm/smmu-v3.c @@ -1469,14 +1469,32 @@ static bool arm_smmu_sid_in_range(struct arm_smmu_d= evice *smmu, u32 sid) } /* Forward declaration */ static struct arm_smmu_device *arm_smmu_get_by_dev(const struct device *de= v); +static int arm_smmu_assign_dev(struct domain *d, u8 devfn, + struct device *dev, u32 flag); =20 static int arm_smmu_add_device(u8 devfn, struct device *dev) { int i, ret; struct arm_smmu_device *smmu; struct arm_smmu_master *master; - struct iommu_fwspec *fwspec =3D dev_iommu_fwspec_get(dev); + struct iommu_fwspec *fwspec; + +#ifdef CONFIG_HAS_PCI + if ( dev_is_pci(dev) ) + { + struct pci_dev *pdev =3D dev_to_pci(dev); + int ret; + + if ( devfn !=3D pdev->devfn ) + return 0; + + ret =3D iommu_add_pci_sideband_ids(pdev); + if ( ret < 0 ) + iommu_fwspec_free(dev); + } +#endif =20 + fwspec =3D dev_iommu_fwspec_get(dev); if (!fwspec) return -ENODEV; =20 @@ -1533,6 +1551,17 @@ static int arm_smmu_add_device(u8 devfn, struct devi= ce *dev) dev_info(dev, "Added master device (SMMUv3 %s StreamIds %u)\n", dev_name(fwspec->iommu_dev), fwspec->num_ids); =20 +#ifdef CONFIG_HAS_PCI + if ( dev_is_pci(dev) ) + { + struct pci_dev *pdev =3D dev_to_pci(dev); + + ret =3D arm_smmu_assign_dev(pdev->domain, devfn, dev, 0); + if (ret) + goto err_free_master; + } +#endif + return 0; =20 err_free_master: @@ -2622,6 +2651,27 @@ static int arm_smmu_assign_dev(struct domain *d, u8 = devfn, struct arm_smmu_domain *smmu_domain; struct arm_smmu_xen_domain *xen_domain =3D dom_iommu(d)->arch.priv; =20 +#ifdef CONFIG_HAS_PCI + if ( dev_is_pci(dev) && !is_hardware_domain(d) ) + { + struct pci_dev *pdev =3D dev_to_pci(dev); + + printk(XENLOG_INFO "Assigning device %04x:%02x:%02x.%u to dom%d\n", + pdev->seg, pdev->bus, PCI_SLOT(devfn), + PCI_FUNC(devfn), d->domain_id); + + if ( devfn !=3D pdev->devfn || pdev->domain =3D=3D d ) + return 0; + + list_move(&pdev->domain_list, &d->pdev_list); + pdev->domain =3D d; + + /* dom_io is used as a sentinel for quarantined devices */ + if ( d =3D=3D dom_io ) + return 0; + } +#endif + spin_lock(&xen_domain->lock); =20 /* @@ -2655,7 +2705,7 @@ out: return ret; } =20 -static int arm_smmu_deassign_dev(struct domain *d, struct device *dev) +static int arm_smmu_deassign_dev(struct domain *d, uint8_t devfn, struct d= evice *dev) { struct iommu_domain *io_domain =3D arm_smmu_get_domain(d, dev); struct arm_smmu_xen_domain *xen_domain =3D dom_iommu(d)->arch.priv; @@ -2667,6 +2717,24 @@ static int arm_smmu_deassign_dev(struct domain *d, s= truct device *dev) return -ESRCH; } =20 +#ifdef CONFIG_HAS_PCI + if ( dev_is_pci(dev) ) + { + struct pci_dev *pdev =3D dev_to_pci(dev); + + printk(XENLOG_INFO "Deassigning device %04x:%02x:%02x.%u from dom%d\n", + pdev->seg, pdev->bus, PCI_SLOT(devfn), + PCI_FUNC(devfn), d->domain_id); + + if ( devfn !=3D pdev->devfn ) + return 0; + + /* dom_io is used as a sentinel for quarantined devices */ + if ( d =3D=3D dom_io ) + return 0; + } +#endif + spin_lock(&xen_domain->lock); =20 arm_smmu_detach_dev(master); @@ -2686,13 +2754,13 @@ static int arm_smmu_reassign_dev(struct domain *s, = struct domain *t, int ret =3D 0; =20 /* Don't allow remapping on other domain than hwdom */ - if ( t && !is_hardware_domain(t) ) + if ( t && !is_hardware_domain(t) && (t !=3D dom_io) ) return -EPERM; =20 if (t =3D=3D s) return 0; =20 - ret =3D arm_smmu_deassign_dev(s, dev); + ret =3D arm_smmu_deassign_dev(s, devfn, dev); if (ret) return ret; =20 --=20 2.40.1