From patchwork Tue Apr 11 19:16:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vikram Garhwal X-Patchwork-Id: 13208133 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 E1421C7619A for ; Tue, 11 Apr 2023 19:20:08 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.519868.807010 (Exim 4.92) (envelope-from ) id 1pmJX7-0001tn-Pm; Tue, 11 Apr 2023 19:20:01 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 519868.807010; Tue, 11 Apr 2023 19:20:01 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pmJX7-0001tT-HI; Tue, 11 Apr 2023 19:20:01 +0000 Received: by outflank-mailman (input) for mailman id 519868; Tue, 11 Apr 2023 19:19:59 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1pmJUh-0004Ta-FG for xen-devel@lists.xenproject.org; Tue, 11 Apr 2023 19:17:31 +0000 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on20631.outbound.protection.outlook.com [2a01:111:f400:7eab::631]) by se1-gles-sth1.inumbo.com (Halon) with ESMTPS id 80933d9d-d89d-11ed-b21e-6b7b168915f2; Tue, 11 Apr 2023 21:17:30 +0200 (CEST) Received: from BN7PR02CA0032.namprd02.prod.outlook.com (2603:10b6:408:20::45) by MW4PR12MB5667.namprd12.prod.outlook.com (2603:10b6:303:18a::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6277.36; Tue, 11 Apr 2023 19:17:26 +0000 Received: from BN8NAM11FT012.eop-nam11.prod.protection.outlook.com (2603:10b6:408:20:cafe::27) by BN7PR02CA0032.outlook.office365.com (2603:10b6:408:20::45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6277.36 via Frontend Transport; Tue, 11 Apr 2023 19:17:26 +0000 Received: from SATLEXMB04.amd.com (165.204.84.17) by BN8NAM11FT012.mail.protection.outlook.com (10.13.177.55) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6298.28 via Frontend Transport; Tue, 11 Apr 2023 19:17:26 +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, 11 Apr 2023 14:17:23 -0500 Received: from xsjfnuv50.xilinx.com (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, 11 Apr 2023 14:17:23 -0500 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: 80933d9d-d89d-11ed-b21e-6b7b168915f2 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bJ0O6GHtiT21f4jamG/1nkPHCqa4FcTuvEoiZY7rnNzRVvZcMWqD+22gBPXrCKVZRbuhqzacuoSI40GoahdOs9YmS1GUW5+yVMr/ZuE/dTYJdv8Jv5NNTEJgukvDUr4a9yAD3cmLLDo21ymy8VNH2GtsPC5m4+aNyWl+PlH0v3MgXFDrZ4cxMi45wX2y05e/FdpGkGLOA573pcDtxRkZ/CJe9pYbdh5JC46HIJLI0Fij2qLWr5/Ti/FRgDc4OB5t9wCMzA9hykIEg+4d0EVWwvnHFKXAXAfcJdm56KTciJjx6ZOZE+MBDg2chC1GRaEzxa8wIwoc1fqOnOA6wDFltw== 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=91E2KEtRfiC4xks88DcPT08G46pT034ykx3UwRRlezk=; b=Uxtz+1EHP7Es6fMd/EjL8S02P7I1hCuklZeceuPRvGkwc418ulHBVILrSdEbq2w4q59M5OA9jDTiy23+Ri6lwJtN4HRAKnhN7O8U1zaro/ZMdCNAw6ym0zTH20WiDj+RiI3/VD7eQ3MdaI8WZc2aHI0O12VpkNTrYocifrJHBWASnr73YLEAD4EioXEyhETX790iFZ41oRe7YM0SQQuEnT6JqP9Hz3FraOoVouW8t0qT/Z/phjJzjL7A7CxPhyeAZu2PiibxbekpY0qokVbEc8GbGzR8caiRTwIIr/npCXSPFMc9nNUV9L78rvMXRXVSoUhnmgRrXKZpmrMfOz3LkQ== 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=91E2KEtRfiC4xks88DcPT08G46pT034ykx3UwRRlezk=; b=jiBfdo0psJ+gincF4tYwny/wZE4YYqB+6weFDtEz4RDwWLvG1btBljprsLUqj7qRKvmdPI0tVipKGrL5HCSTJodkdK7Wum/AeI1WkuOse3Yuh+L8rqsvyudOZPx1cgMZ+NwJH9bS9/63FzMuLOe5hqM9bJkKmMMcC+uA+zTfq6c= 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 From: Vikram Garhwal To: CC: , Vikram Garhwal , Wei Liu , Anthony PERARD , Juergen Gross Subject: [XEN][PATCH v5 16/17] tools/libs/light: Implement new libxl functions for device tree overlay ops Date: Tue, 11 Apr 2023 12:16:35 -0700 Message-ID: <20230411191636.26926-35-vikram.garhwal@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230411191636.26926-1-vikram.garhwal@amd.com> References: <20230411191636.26926-1-vikram.garhwal@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT012:EE_|MW4PR12MB5667:EE_ X-MS-Office365-Filtering-Correlation-Id: 6a392f45-94a7-4efa-ba31-08db3ac162ac 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)(396003)(376002)(136003)(346002)(39860400002)(451199021)(36840700001)(46966006)(40470700004)(36756003)(44832011)(82310400005)(40460700003)(2906002)(5660300002)(8936002)(86362001)(40480700001)(8676002)(26005)(6666004)(1076003)(36860700001)(54906003)(478600001)(2616005)(47076005)(336012)(426003)(186003)(70206006)(70586007)(81166007)(82740400003)(41300700001)(356005)(4326008)(6916009)(316002)(2004002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Apr 2023 19:17:26.1174 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6a392f45-94a7-4efa-ba31-08db3ac162ac 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: BN8NAM11FT012.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB5667 Signed-off-by: Vikram Garhwal --- tools/include/libxl.h | 11 +++++ tools/libs/light/Makefile | 3 ++ tools/libs/light/libxl_dt_overlay.c | 71 +++++++++++++++++++++++++++++ 3 files changed, 85 insertions(+) create mode 100644 tools/libs/light/libxl_dt_overlay.c diff --git a/tools/include/libxl.h b/tools/include/libxl.h index cfa1a19131..1c5e8abaae 100644 --- a/tools/include/libxl.h +++ b/tools/include/libxl.h @@ -250,6 +250,12 @@ */ #define LIBXL_HAVE_DEVICETREE_PASSTHROUGH 1 +#if defined(__arm__) || defined(__aarch64__) +/** + * This means Device Tree Overlay is supported. + */ +#define LIBXL_HAVE_DT_OVERLAY 1 +#endif /* * libxl_domain_build_info has device_model_user to specify the user to * run the device model with. See docs/misc/qemu-deprivilege.txt. @@ -2453,6 +2459,11 @@ libxl_device_pci *libxl_device_pci_list(libxl_ctx *ctx, uint32_t domid, int *num); void libxl_device_pci_list_free(libxl_device_pci* list, int num); +#if defined(__arm__) || defined(__aarch64__) +int libxl_dt_overlay(libxl_ctx *ctx, void *overlay, + uint32_t overlay_size, uint8_t overlay_op); +#endif + /* * Turns the current process into a backend device service daemon * for a driver domain. diff --git a/tools/libs/light/Makefile b/tools/libs/light/Makefile index 96daeabc47..563a1e8d0a 100644 --- a/tools/libs/light/Makefile +++ b/tools/libs/light/Makefile @@ -112,6 +112,9 @@ OBJS-y += _libxl_types.o OBJS-y += libxl_flask.o OBJS-y += _libxl_types_internal.o +# Device tree overlay is enabled only for ARM architecture. +OBJS-$(CONFIG_ARM) += libxl_dt_overlay.o + ifeq ($(CONFIG_LIBNL),y) CFLAGS_LIBXL += $(LIBNL3_CFLAGS) endif diff --git a/tools/libs/light/libxl_dt_overlay.c b/tools/libs/light/libxl_dt_overlay.c new file mode 100644 index 0000000000..a6c709a6dc --- /dev/null +++ b/tools/libs/light/libxl_dt_overlay.c @@ -0,0 +1,71 @@ +/* + * Copyright (C) 2021 Xilinx Inc. + * Author Vikram Garhwal + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; version 2.1 only. with the special + * exception on linking described in file LICENSE. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License for more details. + */ + +#include "libxl_osdeps.h" /* must come before any other headers */ +#include "libxl_internal.h" +#include +#include + +static int check_overlay_fdt(libxl__gc *gc, void *fdt, size_t size) +{ + int r; + + if (fdt_magic(fdt) != FDT_MAGIC) { + LOG(ERROR, "Overlay FDT is not a valid Flat Device Tree"); + return ERROR_FAIL; + } + + r = fdt_check_header(fdt); + if (r) { + LOG(ERROR, "Failed to check the overlay FDT (%d)", r); + return ERROR_FAIL; + } + + if (fdt_totalsize(fdt) > size) { + LOG(ERROR, "Overlay FDT totalsize is too big"); + return ERROR_FAIL; + } + + return 0; +} + +int libxl_dt_overlay(libxl_ctx *ctx, void *overlay_dt, uint32_t overlay_dt_size, + uint8_t overlay_op) +{ + int rc; + int r; + GC_INIT(ctx); + + if (check_overlay_fdt(gc, overlay_dt, overlay_dt_size)) { + LOG(ERROR, "Overlay DTB check failed"); + rc = ERROR_FAIL; + goto out; + } else { + LOG(DEBUG, "Overlay DTB check passed"); + rc = 0; + } + + r = xc_dt_overlay(ctx->xch, overlay_dt, overlay_dt_size, overlay_op); + + if (r) { + LOG(ERROR, "%s: Adding/Removing overlay dtb failed.", __func__); + rc = ERROR_FAIL; + } + +out: + GC_FREE; + return rc; +} +