From patchwork Fri Apr 11 06:37:41 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 14047694 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F17F2C369A2 for ; Fri, 11 Apr 2025 06:53:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sAEJs93SC7bB4T5SXHDyQvp/q2UJcl2xzAJBmjYN8/k=; b=XR0N3uC+2aNKjlteWzJFmcPdVX Z7078WJMTJuu4KvVYF56k4D5Il7Yw1p/S4LRUdE3R/4U1I18z0nqqQ25fgQmqexPYFaLZ7LOtAl5O EQem/sNNTgHIdMMx0q5y3YeHMbLj9Sy/IJjHUQnVZ/0po8YwTGbfOtB9AeV465Ds447ejj3S8z7wg HxePdIHOFU6VLkqtrGXbskIAK+L/qXhodMJj77M1VGPQhrMDrOXRdiizVSWDxNvcxNAmsL0l7rizx PKootEI0zPIMZ7FyYYPDMBDGEZknXR0Z2AVBERKcKwuGZQEkbqDwSi0TwEihj9IEY4Ay0IlKOlHU1 Naa0Kg8A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u38GY-0000000Cn5Q-2Nq6; Fri, 11 Apr 2025 06:53:30 +0000 Received: from mail-sn1nam02on2061f.outbound.protection.outlook.com ([2a01:111:f403:2406::61f] helo=NAM02-SN1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u381z-0000000CkGb-26r1 for linux-arm-kernel@lists.infradead.org; Fri, 11 Apr 2025 06:38:28 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=NUFONY3ErQSFVF35w2CWpE7wHUUJnrdEG/Bf+Cq5y7MDgM2ay+Qekf8dJxcDlhb5qTQ62LPqAjuXF1WyENKicaCkhsylP+z/2tLZvTh6PZv6adpN1kp+y0NA5NfssJAX/KtJ5TDCqWS9WfGv7fPWHJUxFLByCNuJ12+nLTAemQdyzeq/SC2ZlM6Kuf5VStUjGTxRLv3NCIMtGF8MwWaewFe0YsS02vpK3gLYmg0Y7NSa7od4zzcH/Xl8JdoHknVj1dc2NIvpxSsT5eWodVRQn4i5njJhm+WGeKOj2UKfpzQxyUwO25S+4gANRL5P1QBHsXWZrGX1PtbP5oyHB79nFQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=sAEJs93SC7bB4T5SXHDyQvp/q2UJcl2xzAJBmjYN8/k=; b=jbkmHYZeb+H7344i2lAE/a5g0mZZh97wZgh+2Cp41DtBCi8VOSaax5fpfWmJWj05xvCjxvwObTQUxlc8oTdyXRXr8DNH8Q65t1WKxoHzurLWM7RRQMwz+mqLfY+6LJ34oTDLOBRayu/FMoA+rHFJ1f2fGUnPqGL8HlflzCZg1c8zLy7n4Ysn0hpwFUOHV7UCB0MXjugINiDuaMQ2UK/khIKCkBJObWaRmWEEiPW8UFYzqNPlhSkEvPcs11QuoC3cF4vrdVxHcjhv5ZO8oqA6KZMXFkiFZdCHxugIhRCKCs27A/6lVoWJOPaOxHGxr1Qi4NteX2O9iG0XgZxUCFemBQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) 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=sAEJs93SC7bB4T5SXHDyQvp/q2UJcl2xzAJBmjYN8/k=; b=Kc6Gw5qojBdoiNAyDr22NK36TeDmHkaaz5N04e0q+Xy9sQac4R+YM8IyNS4OOnrjdgoKm+iERZvGqwmv8t3u0jOerEge+oAQwgJV44vUYAOh9ujvG5K5b6l/J7kDesY9uAe2tR1Z+bWFOlDOc9hg3lKU/JXYsaLYBFzcBBy7qrfi8prvvJIfCclKLgGF1FC8pG38+0q4AJsWJrA1XUSPwyXPxOJ2QGksPXdOPCgyHXXyVZUVd/IPfEvxG06vxMYHF5IanXKct7ISGijJ0OzF4QDya7F0imTuFZUxcgIo2rgiHqm9JafShwdaN+UH27yE1Mcjzr4TsXHQAwPg3JWSqA== Received: from BYAPR04CA0008.namprd04.prod.outlook.com (2603:10b6:a03:40::21) by SN7PR12MB8602.namprd12.prod.outlook.com (2603:10b6:806:26d::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8606.32; Fri, 11 Apr 2025 06:38:20 +0000 Received: from SJ5PEPF000001F0.namprd05.prod.outlook.com (2603:10b6:a03:40:cafe::79) by BYAPR04CA0008.outlook.office365.com (2603:10b6:a03:40::21) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8632.26 via Frontend Transport; Fri, 11 Apr 2025 06:38:20 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by SJ5PEPF000001F0.mail.protection.outlook.com (10.167.242.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8632.13 via Frontend Transport; Fri, 11 Apr 2025 06:38:20 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Thu, 10 Apr 2025 23:38:09 -0700 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.14; Thu, 10 Apr 2025 23:38:09 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.9) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server id 15.2.1544.14 via Frontend Transport; Thu, 10 Apr 2025 23:38:07 -0700 From: Nicolin Chen To: , , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v1 02/16] iommufd/viommu: Allow driver-specific user data for a vIOMMU object Date: Thu, 10 Apr 2025 23:37:41 -0700 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001F0:EE_|SN7PR12MB8602:EE_ X-MS-Office365-Filtering-Correlation-Id: 0c59669f-ecaa-4650-7e8e-08dd78c37355 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|7416014|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(376014)(7416014)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Apr 2025 06:38:20.5104 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0c59669f-ecaa-4650-7e8e-08dd78c37355 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001F0.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB8602 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250410_233827_544197_2D36011B X-CRM114-Status: GOOD ( 12.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The new type of vIOMMU for tegra241-cmdqv driver needs a driver-specific user data. So, add data_len/uptr to the iommu_viommu_alloc uAPI and pass it in via the viommu_alloc iommu op. Signed-off-by: Nicolin Chen --- include/uapi/linux/iommufd.h | 6 ++++++ drivers/iommu/iommufd/viommu.c | 8 +++++++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h index f29b6c44655e..cc90299a08d9 100644 --- a/include/uapi/linux/iommufd.h +++ b/include/uapi/linux/iommufd.h @@ -965,6 +965,9 @@ enum iommu_viommu_type { * @dev_id: The device's physical IOMMU will be used to back the virtual IOMMU * @hwpt_id: ID of a nesting parent HWPT to associate to * @out_viommu_id: Output virtual IOMMU ID for the allocated object + * @data_len: Length of the type specific data + * @__reserved: Must be 0 + * @data_uptr: User pointer to an array of driver-specific virtual IOMMU data * * Allocate a virtual IOMMU object, representing the underlying physical IOMMU's * virtualization support that is a security-isolated slice of the real IOMMU HW @@ -985,6 +988,9 @@ struct iommu_viommu_alloc { __u32 dev_id; __u32 hwpt_id; __u32 out_viommu_id; + __u32 data_len; + __u32 __reserved; + __aligned_u64 data_uptr; }; #define IOMMU_VIOMMU_ALLOC _IO(IOMMUFD_TYPE, IOMMUFD_CMD_VIOMMU_ALLOC) diff --git a/drivers/iommu/iommufd/viommu.c b/drivers/iommu/iommufd/viommu.c index b861ca49d723..3d4d325adeaa 100644 --- a/drivers/iommu/iommufd/viommu.c +++ b/drivers/iommu/iommufd/viommu.c @@ -17,6 +17,11 @@ void iommufd_viommu_destroy(struct iommufd_object *obj) int iommufd_viommu_alloc_ioctl(struct iommufd_ucmd *ucmd) { struct iommu_viommu_alloc *cmd = ucmd->cmd; + const struct iommu_user_data user_data = { + .type = cmd->type, + .uptr = u64_to_user_ptr(cmd->data_uptr), + .len = cmd->data_len, + }; struct iommufd_hwpt_paging *hwpt_paging; struct iommufd_viommu *viommu; struct iommufd_device *idev; @@ -48,7 +53,8 @@ int iommufd_viommu_alloc_ioctl(struct iommufd_ucmd *ucmd) } viommu = ops->viommu_alloc(idev->dev, hwpt_paging->common.domain, - ucmd->ictx, cmd->type, NULL); + ucmd->ictx, cmd->type, + user_data.len ? &user_data : NULL); if (IS_ERR(viommu)) { rc = PTR_ERR(viommu); goto out_put_hwpt;