From patchwork Tue Jul 25 21:40:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brett Creeley X-Patchwork-Id: 13327085 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 5FE6927729 for ; Tue, 25 Jul 2023 21:41:30 +0000 (UTC) Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2087.outbound.protection.outlook.com [40.107.92.87]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2CAD01FEC; Tue, 25 Jul 2023 14:41:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=f73467ZG4k0UVk0NRZGRrFXtOIaZOShvkXR9A5xoOjScfVW5QVngwBZhx9g9srAGizbhrGeBPinh5D081JqiquWiScRVlMufn9ddg6Zz8TY+NRaGxSdvOt4kxS4meMZ4U4nma/FXW1PdFPKhp4F7i2FHB/IkdAwlLY/R/0aUbnraF4z4UbDjmdgMGHAIZDIKjYllGBQnGqltQmHmCPji00ZqiFm63kd6mq0QkS46lC+gp9tLpqMk4uINGbOmAbEs7IRhe8PU+CJsiLNcUOti1MIu4sdBHstIkqw9h8X4wtDVjZeM1ygQsoJjjGCKbxnxplaDvSmyKJ3ComuHHdtFmQ== 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=I1ML86yg3WfhuvkRkWK1nHNnmgGRHpodrBNZ6h5Zt9c=; b=hS3L3f0RZlR91I7NSxwq/HfVLonKVx5D/8VmYJKpIKWmXxgl2Q6j697TbvXiZgqVSCUrGEoAhmnST6OfZRgbYGd42Cnl763z/N6hb79GG082oAynQbIDfJTO2JJ1ZbKB0bDQEtOVAwP8J4KMgXo4RKC2h0zSOsIDzF1Pjt7AQmhy/VU0FVMAdFVuZXbwMmkfDpc1E4E80cR0EpzEn4+1EvkJOBMDQBlk/grwA/AzS1o/2cW/L7el3WXe39gA/hh1aUfGghX/2g9jyGiVBjXd88pyQ80m+UOEhihNgiYQgwMPIs0ZtdR1jE2tb7nT4f/DP+bCACSVJVuU91i6p1cH0A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=vger.kernel.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=I1ML86yg3WfhuvkRkWK1nHNnmgGRHpodrBNZ6h5Zt9c=; b=udujvu84Q1mhecvDSoWp0mYiO1OhVD0d0BitdsgU+sTy2OPp+MnDesW4sGNME8TlUEJY1RckUQ2rHg4eIhpN8NLZOeolNGSNiOtV6+HcBxE91U5eXKZylJPj4jMuqkNgNv8LfLLt8EOOIYhr2bpDVRrp4X7/YWynsxff8UbdnFU= Received: from BN9PR03CA0805.namprd03.prod.outlook.com (2603:10b6:408:13f::30) by PH0PR12MB5466.namprd12.prod.outlook.com (2603:10b6:510:d7::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.33; Tue, 25 Jul 2023 21:41:23 +0000 Received: from BN8NAM11FT046.eop-nam11.prod.protection.outlook.com (2603:10b6:408:13f:cafe::65) by BN9PR03CA0805.outlook.office365.com (2603:10b6:408:13f::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6609.31 via Frontend Transport; Tue, 25 Jul 2023 21:41:23 +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 BN8NAM11FT046.mail.protection.outlook.com (10.13.177.127) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6631.22 via Frontend Transport; Tue, 25 Jul 2023 21:41:23 +0000 Received: from driver-dev1.pensando.io (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 15.1.2507.27; Tue, 25 Jul 2023 16:41:02 -0500 From: Brett Creeley To: , , , , , , CC: , , Subject: [PATCH v13 vfio 7/7] vfio/pds: Add Kconfig and documentation Date: Tue, 25 Jul 2023 14:40:25 -0700 Message-ID: <20230725214025.9288-8-brett.creeley@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230725214025.9288-1-brett.creeley@amd.com> References: <20230725214025.9288-1-brett.creeley@amd.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] 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: BN8NAM11FT046:EE_|PH0PR12MB5466:EE_ X-MS-Office365-Filtering-Correlation-Id: 58f1a6ad-1d6c-4ba7-987a-08db8d57e450 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)(39860400002)(136003)(346002)(396003)(376002)(451199021)(82310400008)(36840700001)(40470700004)(46966006)(82740400003)(478600001)(356005)(83380400001)(6666004)(47076005)(26005)(1076003)(4326008)(54906003)(110136005)(81166007)(16526019)(186003)(336012)(36860700001)(2616005)(70206006)(70586007)(426003)(44832011)(5660300002)(8936002)(8676002)(40460700003)(2906002)(316002)(41300700001)(40480700001)(86362001)(36756003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Jul 2023 21:41:23.4746 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 58f1a6ad-1d6c-4ba7-987a-08db8d57e450 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: BN8NAM11FT046.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB5466 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Add Kconfig entries and pds-vfio-pci.rst. Also, add an entry in the MAINTAINERS file for this new driver. It's not clear where documentation for vendor specific VFIO drivers should live, so just re-use the current amd ethernet location. Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Reviewed-by: Simon Horman --- .../ethernet/amd/pds_vfio_pci.rst | 79 +++++++++++++++++++ .../device_drivers/ethernet/index.rst | 1 + MAINTAINERS | 7 ++ drivers/vfio/pci/Kconfig | 2 + drivers/vfio/pci/pds/Kconfig | 19 +++++ 5 files changed, 108 insertions(+) create mode 100644 Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst create mode 100644 drivers/vfio/pci/pds/Kconfig diff --git a/Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst b/Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst new file mode 100644 index 000000000000..7a6bc848a2b2 --- /dev/null +++ b/Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst @@ -0,0 +1,79 @@ +.. SPDX-License-Identifier: GPL-2.0+ +.. note: can be edited and viewed with /usr/bin/formiko-vim + +========================================================== +PCI VFIO driver for the AMD/Pensando(R) DSC adapter family +========================================================== + +AMD/Pensando Linux VFIO PCI Device Driver +Copyright(c) 2023 Advanced Micro Devices, Inc. + +Overview +======== + +The ``pds-vfio-pci`` module is a PCI driver that supports Live Migration +capable Virtual Function (VF) devices in the DSC hardware. + +Using the device +================ + +The pds-vfio-pci device is enabled via multiple configuration steps and +depends on the ``pds_core`` driver to create and enable SR-IOV Virtual +Function devices. + +Shown below are the steps to bind the driver to a VF and also to the +associated auxiliary device created by the ``pds_core`` driver. This +example assumes the pds_core and pds-vfio-pci modules are already +loaded. + +.. code-block:: bash + :name: example-setup-script + + #!/bin/bash + + PF_BUS="0000:60" + PF_BDF="0000:60:00.0" + VF_BDF="0000:60:00.1" + + # Prevent non-vfio VF driver from probing the VF device + echo 0 > /sys/class/pci_bus/$PF_BUS/device/$PF_BDF/sriov_drivers_autoprobe + + # Create single VF for Live Migration via pds_core + echo 1 > /sys/bus/pci/drivers/pds_core/$PF_BDF/sriov_numvfs + + # Allow the VF to be bound to the pds-vfio-pci driver + echo "pds-vfio-pci" > /sys/class/pci_bus/$PF_BUS/device/$VF_BDF/driver_override + + # Bind the VF to the pds-vfio-pci driver + echo "$VF_BDF" > /sys/bus/pci/drivers/pds-vfio-pci/bind + +After performing the steps above, a file in /dev/vfio/ +should have been created. + + +Enabling the driver +=================== + +The driver is enabled via the standard kernel configuration system, +using the make command:: + + make oldconfig/menuconfig/etc. + +The driver is located in the menu structure at: + + -> Device Drivers + -> VFIO Non-Privileged userspace driver framework + -> VFIO support for PDS PCI devices + +Support +======= + +For general Linux networking support, please use the netdev mailing +list, which is monitored by Pensando personnel:: + + netdev@vger.kernel.org + +For more specific support needs, please use the Pensando driver support +email:: + + drivers@pensando.io diff --git a/Documentation/networking/device_drivers/ethernet/index.rst b/Documentation/networking/device_drivers/ethernet/index.rst index 94ecb67c0885..9827e816084b 100644 --- a/Documentation/networking/device_drivers/ethernet/index.rst +++ b/Documentation/networking/device_drivers/ethernet/index.rst @@ -16,6 +16,7 @@ Contents: altera/altera_tse amd/pds_core amd/pds_vdpa + amd/pds_vfio_pci aquantia/atlantic chelsio/cxgb cirrus/cs89x0 diff --git a/MAINTAINERS b/MAINTAINERS index ddc71b815791..1fbe4db3ec8c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22436,6 +22436,13 @@ S: Maintained P: Documentation/driver-api/vfio-pci-device-specific-driver-acceptance.rst F: drivers/vfio/pci/*/ +VFIO PDS PCI DRIVER +M: Brett Creeley +L: kvm@vger.kernel.org +S: Maintained +F: Documentation/networking/device_drivers/ethernet/amd/pds_vfio_pci.rst +F: drivers/vfio/pci/pds/ + VFIO PLATFORM DRIVER M: Eric Auger L: kvm@vger.kernel.org diff --git a/drivers/vfio/pci/Kconfig b/drivers/vfio/pci/Kconfig index 86bb7835cf3c..8125e5f37832 100644 --- a/drivers/vfio/pci/Kconfig +++ b/drivers/vfio/pci/Kconfig @@ -63,4 +63,6 @@ source "drivers/vfio/pci/mlx5/Kconfig" source "drivers/vfio/pci/hisilicon/Kconfig" +source "drivers/vfio/pci/pds/Kconfig" + endmenu diff --git a/drivers/vfio/pci/pds/Kconfig b/drivers/vfio/pci/pds/Kconfig new file mode 100644 index 000000000000..407b3fd32733 --- /dev/null +++ b/drivers/vfio/pci/pds/Kconfig @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2023 Advanced Micro Devices, Inc. + +config PDS_VFIO_PCI + tristate "VFIO support for PDS PCI devices" + depends on PDS_CORE + select VFIO_PCI_CORE + help + This provides generic PCI support for PDS devices using the VFIO + framework. + + More specific information on this driver can be + found in + . + + To compile this driver as a module, choose M here. The module + will be called pds-vfio-pci. + + If you don't know what to do here, say N.