From patchwork Wed Mar 8 05:24:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brett Creeley X-Patchwork-Id: 13165229 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 320C5C678D5 for ; Wed, 8 Mar 2023 05:25:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229707AbjCHFZ1 (ORCPT ); Wed, 8 Mar 2023 00:25:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37126 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229706AbjCHFZY (ORCPT ); Wed, 8 Mar 2023 00:25:24 -0500 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2046.outbound.protection.outlook.com [40.107.93.46]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD1B392BDE; Tue, 7 Mar 2023 21:25:13 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=W9vMLl6eCEdg+z9pAltMpgE3RSEvyDgqxvIMIgdDvQBJe/1lPhVrE7pCskbxhC/KFJrTSpXqGuusiUuIcg+bVlos7i/e6oBVMpx9Z4GatO6D3zhGj9R0pXV3hBBGZeiB5t2J+TT8JLjZJ13hfYpIbYyqfvU47hZpPiyRiLpuZTuCcfX7ZH2Gx3Cq8O7umbyJcsCJdVT4HXH3fUMN3WvzJUjY1kLGeDTH93Yo7OUFETvXBcwi9lKzawkIkmUNafc52Ftb7J5TYr2AzIwAjKJ+YclPOnLgpLGARgAyS3RtFiX5Yi54Lu6o8bdJ3sIIdpYGXQgw2qN7v/hVcKjH8U3bNg== 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=iZ/eG4aTOjg76fRpnznw2pP/FWbjk5ZONqmqurYfl40=; b=kBFoZVzUN9lUylTwHxg6fW/wzB+n2uDFa4x0apxzNYQbLybrkGROpP8H7t6k5cLSUTX3ImRoXm+4UF5NRiIxRo6hzquZnmpXYy1/iyVBYt4mTcdrLY8GlaRwZww+GCSp3Xh1+/irx9j2LlxIe95UJuiovvDpp7/pFNWuS5gtS8aOOv+QJlWBvKq0fI66EIATA2kNhvFdRTIW5UQtV3wIj4QO2eIwH0UxYQ78S4lDD+LjlQ3Luv1N/m1yp4PtyZK+EdwQumJAigMRCy8OntcKTHx6WEGF5phxeuqWBscVK+8sDNvNDqihNS3nVz3xTG+kjjhHmcd/OJLU8MpPc5lm0w== 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=iZ/eG4aTOjg76fRpnznw2pP/FWbjk5ZONqmqurYfl40=; b=eG8VNbW3ZRdjJa3TMh4TkMPWVd77hgFciVewuS1O5giUD9vIOU+gFvhKfGXd00fBAzZhDQCoRBRTdIOA+nBEayQSpoIR69eHnI9IPGGSKFB8aagWEZ+yee7OnETUAwcvEEqJ0Wb5Lz5W65jCAlmDMVPjFQyIpAhrz6eIUIIX/ZI= Received: from BN9PR03CA0216.namprd03.prod.outlook.com (2603:10b6:408:f8::11) by BL1PR12MB5849.namprd12.prod.outlook.com (2603:10b6:208:384::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6156.29; Wed, 8 Mar 2023 05:25:08 +0000 Received: from BN8NAM11FT011.eop-nam11.prod.protection.outlook.com (2603:10b6:408:f8:cafe::ef) by BN9PR03CA0216.outlook.office365.com (2603:10b6:408:f8::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6156.29 via Frontend Transport; Wed, 8 Mar 2023 05:25:08 +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 BN8NAM11FT011.mail.protection.outlook.com (10.13.176.140) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6178.17 via Frontend Transport; Wed, 8 Mar 2023 05:25:08 +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 15.1.2375.34; Tue, 7 Mar 2023 23:25:06 -0600 From: Brett Creeley To: , , , , , , CC: , , Subject: [RFC PATCH v4 2/7] vfio/pds: Initial support for pds_vfio VFIO driver Date: Tue, 7 Mar 2023 21:24:45 -0800 Message-ID: <20230308052450.13421-3-brett.creeley@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230308052450.13421-1-brett.creeley@amd.com> References: <20230308052450.13421-1-brett.creeley@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT011:EE_|BL1PR12MB5849:EE_ X-MS-Office365-Filtering-Correlation-Id: 7bcf5814-89ff-41e9-904f-08db1f957b4e 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:(13230025)(4636009)(396003)(136003)(376002)(39860400002)(346002)(451199018)(36840700001)(40470700004)(46966006)(70586007)(70206006)(8676002)(4326008)(44832011)(2616005)(6666004)(426003)(36756003)(47076005)(5660300002)(356005)(316002)(83380400001)(82310400005)(110136005)(54906003)(86362001)(8936002)(478600001)(36860700001)(40460700003)(336012)(40480700001)(186003)(16526019)(2906002)(82740400003)(41300700001)(26005)(1076003)(81166007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Mar 2023 05:25:08.1922 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7bcf5814-89ff-41e9-904f-08db1f957b4e 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: BN8NAM11FT011.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5849 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC This is the initial framework for the new pds_vfio device driver. This does the very basics of registering the PDS PCI device and configuring it as a VFIO PCI device. With this change, the VF device can be bound to the pds_vfio driver on the host and presented to the VM as the VF's device type. Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson --- drivers/vfio/pci/Makefile | 2 + drivers/vfio/pci/pds/Makefile | 8 ++++ drivers/vfio/pci/pds/pci_drv.c | 74 +++++++++++++++++++++++++++++++++ drivers/vfio/pci/pds/vfio_dev.c | 74 +++++++++++++++++++++++++++++++++ drivers/vfio/pci/pds/vfio_dev.h | 21 ++++++++++ 5 files changed, 179 insertions(+) create mode 100644 drivers/vfio/pci/pds/Makefile create mode 100644 drivers/vfio/pci/pds/pci_drv.c create mode 100644 drivers/vfio/pci/pds/vfio_dev.c create mode 100644 drivers/vfio/pci/pds/vfio_dev.h diff --git a/drivers/vfio/pci/Makefile b/drivers/vfio/pci/Makefile index 24c524224da5..45167be462d8 100644 --- a/drivers/vfio/pci/Makefile +++ b/drivers/vfio/pci/Makefile @@ -11,3 +11,5 @@ obj-$(CONFIG_VFIO_PCI) += vfio-pci.o obj-$(CONFIG_MLX5_VFIO_PCI) += mlx5/ obj-$(CONFIG_HISI_ACC_VFIO_PCI) += hisilicon/ + +obj-$(CONFIG_PDS_VFIO_PCI) += pds/ diff --git a/drivers/vfio/pci/pds/Makefile b/drivers/vfio/pci/pds/Makefile new file mode 100644 index 000000000000..e1a55ae0f079 --- /dev/null +++ b/drivers/vfio/pci/pds/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2023 Advanced Micro Devices, Inc. + +obj-$(CONFIG_PDS_VFIO_PCI) += pds_vfio.o + +pds_vfio-y := \ + pci_drv.o \ + vfio_dev.o diff --git a/drivers/vfio/pci/pds/pci_drv.c b/drivers/vfio/pci/pds/pci_drv.c new file mode 100644 index 000000000000..5e554420792e --- /dev/null +++ b/drivers/vfio/pci/pds/pci_drv.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2023 Advanced Micro Devices, Inc. */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include + +#include + +#include "vfio_dev.h" + +#define PDS_VFIO_DRV_NAME "pds_vfio" +#define PDS_VFIO_DRV_DESCRIPTION "AMD/Pensando VFIO Device Driver" +#define PCI_VENDOR_ID_PENSANDO 0x1dd8 + +static int +pds_vfio_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + struct pds_vfio_pci_device *pds_vfio; + int err; + + pds_vfio = vfio_alloc_device(pds_vfio_pci_device, vfio_coredev.vdev, + &pdev->dev, pds_vfio_ops_info()); + if (IS_ERR(pds_vfio)) + return PTR_ERR(pds_vfio); + + dev_set_drvdata(&pdev->dev, &pds_vfio->vfio_coredev); + pds_vfio->pdev = pdev; + + err = vfio_pci_core_register_device(&pds_vfio->vfio_coredev); + if (err) + goto out_put_vdev; + + return 0; + +out_put_vdev: + vfio_put_device(&pds_vfio->vfio_coredev.vdev); + return err; +} + +static void +pds_vfio_pci_remove(struct pci_dev *pdev) +{ + struct pds_vfio_pci_device *pds_vfio = pds_vfio_pci_drvdata(pdev); + + vfio_pci_core_unregister_device(&pds_vfio->vfio_coredev); + vfio_put_device(&pds_vfio->vfio_coredev.vdev); +} + +static const struct pci_device_id +pds_vfio_pci_table[] = { + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_PENSANDO, 0x1003) }, /* Ethernet VF */ + { 0, } +}; +MODULE_DEVICE_TABLE(pci, pds_vfio_pci_table); + +static struct pci_driver +pds_vfio_pci_driver = { + .name = PDS_VFIO_DRV_NAME, + .id_table = pds_vfio_pci_table, + .probe = pds_vfio_pci_probe, + .remove = pds_vfio_pci_remove, + .driver_managed_dma = true, +}; + +module_pci_driver(pds_vfio_pci_driver); + +MODULE_DESCRIPTION(PDS_VFIO_DRV_DESCRIPTION); +MODULE_AUTHOR("Advanced Micro Devices, Inc."); +MODULE_LICENSE("GPL"); diff --git a/drivers/vfio/pci/pds/vfio_dev.c b/drivers/vfio/pci/pds/vfio_dev.c new file mode 100644 index 000000000000..f1221f14e4f6 --- /dev/null +++ b/drivers/vfio/pci/pds/vfio_dev.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2023 Advanced Micro Devices, Inc. */ + +#include +#include + +#include "vfio_dev.h" + +struct pds_vfio_pci_device * +pds_vfio_pci_drvdata(struct pci_dev *pdev) +{ + struct vfio_pci_core_device *core_device = dev_get_drvdata(&pdev->dev); + + return container_of(core_device, struct pds_vfio_pci_device, + vfio_coredev); +} + +static int +pds_vfio_init_device(struct vfio_device *vdev) +{ + struct pds_vfio_pci_device *pds_vfio = + container_of(vdev, struct pds_vfio_pci_device, + vfio_coredev.vdev); + struct pci_dev *pdev = to_pci_dev(vdev->dev); + int err; + + err = vfio_pci_core_init_dev(vdev); + if (err) + return err; + + pds_vfio->vf_id = pci_iov_vf_id(pdev); + pds_vfio->pci_id = PCI_DEVID(pdev->bus->number, pdev->devfn); + + return 0; +} + +static int +pds_vfio_open_device(struct vfio_device *vdev) +{ + struct pds_vfio_pci_device *pds_vfio = + container_of(vdev, struct pds_vfio_pci_device, + vfio_coredev.vdev); + int err; + + err = vfio_pci_core_enable(&pds_vfio->vfio_coredev); + if (err) + return err; + + vfio_pci_core_finish_enable(&pds_vfio->vfio_coredev); + + return 0; +} + +static const struct vfio_device_ops +pds_vfio_ops = { + .name = "pds-vfio", + .init = pds_vfio_init_device, + .release = vfio_pci_core_release_dev, + .open_device = pds_vfio_open_device, + .close_device = vfio_pci_core_close_device, + .ioctl = vfio_pci_core_ioctl, + .device_feature = vfio_pci_core_ioctl_feature, + .read = vfio_pci_core_read, + .write = vfio_pci_core_write, + .mmap = vfio_pci_core_mmap, + .request = vfio_pci_core_request, + .match = vfio_pci_core_match, +}; + +const struct vfio_device_ops * +pds_vfio_ops_info(void) +{ + return &pds_vfio_ops; +} diff --git a/drivers/vfio/pci/pds/vfio_dev.h b/drivers/vfio/pci/pds/vfio_dev.h new file mode 100644 index 000000000000..d9f0203c1649 --- /dev/null +++ b/drivers/vfio/pci/pds/vfio_dev.h @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright(c) 2023 Advanced Micro Devices, Inc. */ + +#ifndef _VFIO_DEV_H_ +#define _VFIO_DEV_H_ + +#include +#include + +struct pds_vfio_pci_device { + struct vfio_pci_core_device vfio_coredev; + struct pci_dev *pdev; + + int vf_id; + int pci_id; +}; + +const struct vfio_device_ops *pds_vfio_ops_info(void); +struct pds_vfio_pci_device *pds_vfio_pci_drvdata(struct pci_dev *pdev); + +#endif /* _VFIO_DEV_H_ */