From nobody Mon Nov 25 07:48:40 2024 Received: from NAM02-DM3-obe.outbound.protection.outlook.com (mail-dm3nam02on2058.outbound.protection.outlook.com [40.107.95.58]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA2B44316B; Wed, 15 May 2024 06:50:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.95.58 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715755838; cv=fail; b=nnrESaKBszthY6kfbCJFZRHES3OE1lOA3mojhPKN6AP6HCpJQ+QcW0ZXOYImuGcCY5tE9MmA8639dfH6UDqgLqXhdkD2EOsYGPc2fpFYZGeL1nPoXfU6iYCXkzEcTA9v2k7fXQ0VzntmhBfunV3J3LJ6gwRwSNXPezMqq5bDL6I= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715755838; c=relaxed/simple; bh=THzrM8ahxTJKIjtidhfoGJUyqYfC0kP1YTE8AmC4Ix8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FviSpFmmviR1zyfXWh76jYHVq2YYIklHp869u5fkEE3aabSAnnHcZvdqZoSgFCZbDlaaAf68x5MW1WHz8E32unsfIo7oTx08Qf7kBlxk8yg/Uo2KezWiIR9eEjocWV0yhevYCg08stuXHFecUTObjYBad9+Nt/EKsALGHhWgk74= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=f1Vff4JH; arc=fail smtp.client-ip=40.107.95.58 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="f1Vff4JH" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KQoA78y8HFU9ZFsEaRg5bbN31t/SNV528CmgOUxgyhnK4rGOFRcJo24xWF1B42xyoINcCqnl1Q++EEJPj9fej7unkoKL3yzHUJe7YGuTO3HqMYu5rrj0SBb645opa0yM4hlaxlEbA+5JK2WoetCLJBwvgscDj34l2dsEsb+pYB0/cuX9B3kXNrYeIXTdodKyTPxNsj6TPWXhyHcI4CmTDHO47nB6wPJBNspdIXtgFceLhBKHrNALmwdKR0Hqa4h1YRY2+hw+19AFIOPsXPpyQ+L5WCntB9TY+3s3VUxAklM6xqhd053PjSZnBwAYJO44a+gaokoZ1Geu6AAuXTnnHw== 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=L0DMDL2cmntv+GEqtM+DWFLmEeuaMCIJxvPHhNL1Yxc=; b=AghRJXHQRqutfEbZkB+0/jsgsfkbk5vPelaNr83SAJk/jrOryJEHbxPGtMy4Q/Mf2jQXZimFiKLZip07W85LTfLh2DUKimm04bMRAkse0XNHgjgBqVtJ6SPrqQ7Ur/lfinWJIydUltAMaeg/of16vSox7lRbJ9jVIP4UYA6CLlIjZdRtrSenb/kYQGnHHvmplyD0uA4tgncW6M1VL3yDzsHogVkoMC/VWWDR+PP7HO35obXvOgaMLK/7umNkxogUnmAUm6/ycOQk5uQwusAIIVK9Na4uEYJG3rs1kAJf5L2YKFA8WTx2xJp30kGu/UQzlgUDvuyUYeeKQqJy8seGxA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=suse.com 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 (0) 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=L0DMDL2cmntv+GEqtM+DWFLmEeuaMCIJxvPHhNL1Yxc=; b=f1Vff4JHSba/TSjjQQogNcw3u08/wTKC7Guim6RtAzUGYKpE7cdiU/5MXV1OfBeeXLV24u0xEXaz46n9z5RDJAQE1QLW3ux4D8k9zei8Rtobp18WbDRvAm9GfeKMdSO1xMSCQEh7v87Z6tSrtplEMMgas6UzxQ1VESFl7rVbeqs= Received: from SJ0PR05CA0069.namprd05.prod.outlook.com (2603:10b6:a03:332::14) by MW4PR12MB7032.namprd12.prod.outlook.com (2603:10b6:303:1e9::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7544.55; Wed, 15 May 2024 06:50:33 +0000 Received: from CO1PEPF000044F3.namprd05.prod.outlook.com (2603:10b6:a03:332:cafe::c5) by SJ0PR05CA0069.outlook.office365.com (2603:10b6:a03:332::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7587.26 via Frontend Transport; Wed, 15 May 2024 06:50:32 +0000 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 (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 Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1PEPF000044F3.mail.protection.outlook.com (10.167.241.73) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7587.21 via Frontend Transport; Wed, 15 May 2024 06:50:32 +0000 Received: from cjq-desktop.amd.com (10.180.168.240) 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 15.1.2507.35; Wed, 15 May 2024 01:50:28 -0500 From: Jiqian Chen To: Juergen Gross , Stefano Stabellini , Bjorn Helgaas , "Rafael J . Wysocki" , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= CC: , , , , Huang Rui , Jiqian Chen , Huang Rui Subject: [RFC KERNEL PATCH v7 1/2] xen/pvh: Setup gsi for passthrough device Date: Wed, 15 May 2024 14:50:10 +0800 Message-ID: <20240515065011.13797-2-Jiqian.Chen@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240515065011.13797-1-Jiqian.Chen@amd.com> References: <20240515065011.13797-1-Jiqian.Chen@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000044F3:EE_|MW4PR12MB7032:EE_ X-MS-Office365-Filtering-Correlation-Id: 793a59ad-cbba-492c-754c-08dc74ab50ee X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|36860700004|376005|82310400017|1800799015; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?BiwMgfZHtnz/lwEJzBjQILySzL9iirr9tnAVxQAwk4Ey0qhwshXV5ZwElOwu?= =?us-ascii?Q?o5reCALQIluqmFhi/WgRRv5YiZuhSBAmlWG3bwqPnUbBGzSmFRHJsrN9AXyf?= =?us-ascii?Q?NVF8PQSkFc3P6epfhSehVmtaUJK2NdMhx81aXuelTfzi/7qTZS/p2Nsqjaxx?= =?us-ascii?Q?94ORvqWuXIUZIfSMZfkFIqhU2khXop8EZ9/DenlGepeaaKftNclT7S6N4VCV?= =?us-ascii?Q?oDliIrMgsQZQLTAR31LpTdnq/UmjQiC+bQTTfJd8eW8QDRCCAbOLQZiRAMlf?= =?us-ascii?Q?0Ye72GK5fcEKiPhkx8Qpqs8ABKwv7eJQaTZxp7IL2drqjpqpku3O5OJp5BhY?= =?us-ascii?Q?JdELPhmVM8CLcLQMUTcu+Ub/3ZCC9CQdrzQFiD+RNORQm3RCAGjhjTZDvoGW?= =?us-ascii?Q?9gc/2ZGiaUNGHc8GChSQmbHDF9qSGcc1I/8E0KL5cLEyClpMcJkUcXBoAYbk?= =?us-ascii?Q?w0NZyw4aZFNBHfpsDyHc2ARUT607bSpjrh1AQp312QUs6ZlZ8bYikp4Vj5Tc?= =?us-ascii?Q?fCuPsTKo+REU/zjbyXfEEsE5yaVyvhLJl4EG01wBrt8o1HXzp7VlhX/Teb83?= =?us-ascii?Q?rgwOTL+Nr1j0Z+9tiFnWsqMk5scGPLnCx7dzg2NkTsMLshLknXzeqnDYab5m?= =?us-ascii?Q?dght+PxgJbspmpuhXUbQd0gm3Yn+JnC8TN5b0bhEjEQHJ5FiiEOJiROhCV70?= =?us-ascii?Q?3yoDCIfgKuZVVqxL9rWfWMh/euyP5155OmjUYr3MWKW3VAGC9yL9AQ6GbjTg?= =?us-ascii?Q?bBGQNzCGDo+eN0aeUpZIgc0fyjhHLY15BxARpcsTigabvrWbLCCvKxa5zcV1?= =?us-ascii?Q?dTvZXq+OmM/EC8mTKFZj9T7NLspyQ0ogfZcobgusN+aWNDhedqVSPR4/iMNG?= =?us-ascii?Q?E7xWHGDXX+NdQRFEqxt9Nt2AQiTdUWECMoyGRts499IPuAvA0gE+LlDEiNeh?= =?us-ascii?Q?K8NpKuazJLgrfqYm7N1QKaZusgrdYmhRd5Zw/hDeiokvUZEf+oWEouEDD4Jx?= =?us-ascii?Q?bNTCkKicMeLMsO/2dLbBK/TjBG5oMW41MDhpJSI96rpsMzISnvc/sxEoGMDr?= =?us-ascii?Q?q/X16C+D88fjWdU/OCclNU5sausoUGq49UFY/MT1K7DDC2L/GfK5/pSFiWQw?= =?us-ascii?Q?h21iG0vlcH5P9g5B+OskKgCIBPed4cWn8ejK4LHYce7ZNSFGvb0ZEXdjFZva?= =?us-ascii?Q?oc3Jzit4HOVRrw1mLkOiU3gS6ZDQltwVycvVmQDIL+wZEpPTiCShrHflL34N?= =?us-ascii?Q?glWAhc59X9pXtyIUIvPH0mYutGVZrcpzxAuha0kMqvqsPJ2JRFMB80pPd2nt?= =?us-ascii?Q?DMjsW+0m0DSv2ytTcSbK3cBcGo2PLwXe1ZNnUEb0t0Hsr0sKF8VAzGJsdH2a?= =?us-ascii?Q?Iahse5Mm0uMqixn5lrM2gHwrmPBq?= 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:(13230031)(36860700004)(376005)(82310400017)(1800799015);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2024 06:50:32.4396 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 793a59ad-cbba-492c-754c-08dc74ab50ee 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: CO1PEPF000044F3.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB7032 Content-Type: text/plain; charset="utf-8" In PVH dom0, the gsis don't get registered, but the gsi of a passthrough device must be configured for it to be able to be mapped into a domU. When assign a device to passthrough, proactively setup the gsi of the device during that process. Co-developed-by: Huang Rui Signed-off-by: Jiqian Chen Reviewed-by: Stefano Stabellini --- arch/x86/xen/enlighten_pvh.c | 21 +++++++++++++ drivers/acpi/pci_irq.c | 2 +- drivers/xen/acpi.c | 50 ++++++++++++++++++++++++++++++ drivers/xen/xen-pciback/pci_stub.c | 21 +++++++++++++ include/linux/acpi.h | 1 + include/xen/acpi.h | 10 ++++++ 6 files changed, 104 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/enlighten_pvh.c b/arch/x86/xen/enlighten_pvh.c index 27a2a02ef8fb..711cdcbc6916 100644 --- a/arch/x86/xen/enlighten_pvh.c +++ b/arch/x86/xen/enlighten_pvh.c @@ -4,6 +4,7 @@ #include =20 #include +#include =20 #include #include @@ -27,6 +28,26 @@ bool __ro_after_init xen_pvh; EXPORT_SYMBOL_GPL(xen_pvh); =20 +int xen_pvh_setup_gsi(int gsi, int trigger, int polarity) +{ + int ret; + struct physdev_setup_gsi setup_gsi; + + setup_gsi.gsi =3D gsi; + setup_gsi.triggering =3D (trigger =3D=3D ACPI_EDGE_SENSITIVE ? 0 : 1); + setup_gsi.polarity =3D (polarity =3D=3D ACPI_ACTIVE_HIGH ? 0 : 1); + + ret =3D HYPERVISOR_physdev_op(PHYSDEVOP_setup_gsi, &setup_gsi); + if (ret =3D=3D -EEXIST) { + xen_raw_printk("Already setup the GSI :%d\n", gsi); + ret =3D 0; + } else if (ret) + xen_raw_printk("Fail to setup GSI (%d)!\n", gsi); + + return ret; +} +EXPORT_SYMBOL_GPL(xen_pvh_setup_gsi); + void __init xen_pvh_init(struct boot_params *boot_params) { u32 msr; diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index ff30ceca2203..630fe0a34bc6 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -288,7 +288,7 @@ static int acpi_reroute_boot_interrupt(struct pci_dev *= dev, } #endif /* CONFIG_X86_IO_APIC */ =20 -static struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int= pin) +struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin) { struct acpi_prt_entry *entry =3D NULL; struct pci_dev *bridge; diff --git a/drivers/xen/acpi.c b/drivers/xen/acpi.c index 6893c79fd2a1..9e2096524fbc 100644 --- a/drivers/xen/acpi.c +++ b/drivers/xen/acpi.c @@ -30,6 +30,7 @@ * IN THE SOFTWARE. */ =20 +#include #include #include #include @@ -75,3 +76,52 @@ int xen_acpi_notify_hypervisor_extended_sleep(u8 sleep_s= tate, return xen_acpi_notify_hypervisor_state(sleep_state, val_a, val_b, true); } + +struct acpi_prt_entry { + struct acpi_pci_id id; + u8 pin; + acpi_handle link; + u32 index; +}; + +int xen_acpi_get_gsi_info(struct pci_dev *dev, + int *gsi_out, + int *trigger_out, + int *polarity_out) +{ + int gsi; + u8 pin; + struct acpi_prt_entry *entry; + int trigger =3D ACPI_LEVEL_SENSITIVE; + int polarity =3D acpi_irq_model =3D=3D ACPI_IRQ_MODEL_GIC ? + ACPI_ACTIVE_HIGH : ACPI_ACTIVE_LOW; + + if (!dev || !gsi_out || !trigger_out || !polarity_out) + return -EINVAL; + + pin =3D dev->pin; + if (!pin) + return -EINVAL; + + entry =3D acpi_pci_irq_lookup(dev, pin); + if (entry) { + if (entry->link) + gsi =3D acpi_pci_link_allocate_irq(entry->link, + entry->index, + &trigger, &polarity, + NULL); + else + gsi =3D entry->index; + } else + gsi =3D -1; + + if (gsi < 0) + return -EINVAL; + + *gsi_out =3D gsi; + *trigger_out =3D trigger; + *polarity_out =3D polarity; + + return 0; +} +EXPORT_SYMBOL_GPL(xen_acpi_get_gsi_info); diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/p= ci_stub.c index 46c40ec8a18e..2b90d832d0a7 100644 --- a/drivers/xen/xen-pciback/pci_stub.c +++ b/drivers/xen/xen-pciback/pci_stub.c @@ -21,6 +21,9 @@ #include #include #include +#ifdef CONFIG_ACPI +#include +#endif #include #include #include "pciback.h" @@ -367,6 +370,9 @@ static int pcistub_match(struct pci_dev *dev) static int pcistub_init_device(struct pci_dev *dev) { struct xen_pcibk_dev_data *dev_data; +#ifdef CONFIG_ACPI + int gsi, trigger, polarity; +#endif int err =3D 0; =20 dev_dbg(&dev->dev, "initializing...\n"); @@ -435,6 +441,21 @@ static int pcistub_init_device(struct pci_dev *dev) goto config_release; pci_restore_state(dev); } + +#ifdef CONFIG_ACPI + err =3D xen_acpi_get_gsi_info(dev, &gsi, &trigger, &polarity); + if (err) { + dev_err(&dev->dev, "Fail to get gsi info!\n"); + goto config_release; + } + + if (xen_initial_domain() && xen_pvh_domain()) { + err =3D xen_pvh_setup_gsi(gsi, trigger, polarity); + if (err) + goto config_release; + } +#endif + /* Now disable the device (this also ensures some private device * data is setup before we export) */ diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 34829f2c517a..f8690b02bba4 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -361,6 +361,7 @@ void acpi_unregister_gsi (u32 gsi); =20 struct pci_dev; =20 +struct acpi_prt_entry *acpi_pci_irq_lookup(struct pci_dev *dev, int pin); int acpi_pci_irq_enable (struct pci_dev *dev); void acpi_penalize_isa_irq(int irq, int active); bool acpi_isa_irq_available(int irq); diff --git a/include/xen/acpi.h b/include/xen/acpi.h index b1e11863144d..9b50027113f3 100644 --- a/include/xen/acpi.h +++ b/include/xen/acpi.h @@ -67,10 +67,20 @@ static inline void xen_acpi_sleep_register(void) acpi_suspend_lowlevel =3D xen_acpi_suspend_lowlevel; } } +int xen_pvh_setup_gsi(int gsi, int trigger, int polarity); #else static inline void xen_acpi_sleep_register(void) { } + +static inline int xen_pvh_setup_gsi(int gsi, int trigger, int polarity) +{ + return -1; +} #endif =20 +int xen_acpi_get_gsi_info(struct pci_dev *dev, + int *gsi_out, + int *trigger_out, + int *polarity_out); #endif /* _XEN_ACPI_H */ --=20 2.34.1