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pr=C From: Vikram Garhwal To: CC: , Vikram Garhwal , Wei Liu , Anthony PERARD , Juergen Gross Subject: [XEN][PATCH v5 15/17] tools/libs/ctrl: Implement new xc interfaces for dt overlay Date: Tue, 11 Apr 2023 12:16:16 -0700 Message-ID: <20230411191636.26926-16-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: CO1NAM11FT085:EE_|IA1PR12MB6529:EE_ X-MS-Office365-Filtering-Correlation-Id: 79fb94b7-2e1f-4cd8-dde2-08db3ac15800 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:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230028)(4636009)(376002)(136003)(39860400002)(396003)(346002)(451199021)(40470700004)(46966006)(36840700001)(40460700003)(70206006)(4326008)(478600001)(8676002)(54906003)(41300700001)(316002)(70586007)(6916009)(86362001)(36756003)(47076005)(2616005)(336012)(26005)(1076003)(426003)(6666004)(5660300002)(44832011)(2906002)(82310400005)(40480700001)(8936002)(356005)(82740400003)(186003)(81166007)(36860700001)(2004002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Apr 2023 19:17:08.1201 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 79fb94b7-2e1f-4cd8-dde2-08db3ac15800 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT085.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6529 xc_dt_overlay() sends the device tree binary overlay, size of .dtbo and overlay operation type i.e. add or remove to xen. Signed-off-by: Vikram Garhwal --- tools/include/xenctrl.h | 5 ++++ tools/libs/ctrl/Makefile.common | 1 + tools/libs/ctrl/xc_dt_overlay.c | 48 +++++++++++++++++++++++++++++++++ 3 files changed, 54 insertions(+) create mode 100644 tools/libs/ctrl/xc_dt_overlay.c diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h index 05967ecc92..b932589c8d 100644 --- a/tools/include/xenctrl.h +++ b/tools/include/xenctrl.h @@ -2637,6 +2637,11 @@ int xc_livepatch_replace(xc_interface *xch, char *name, uint32_t timeout, uint32 int xc_domain_cacheflush(xc_interface *xch, uint32_t domid, xen_pfn_t start_pfn, xen_pfn_t nr_pfns); +#if defined(__arm__) || defined(__aarch64__) +int xc_dt_overlay(xc_interface *xch, void *overlay_fdt, + uint32_t overlay_fdt_size, uint8_t overlay_op); +#endif + /* Compat shims */ #include "xenctrl_compat.h" diff --git a/tools/libs/ctrl/Makefile.common b/tools/libs/ctrl/Makefile.common index 0a09c28fd3..247afbe5f9 100644 --- a/tools/libs/ctrl/Makefile.common +++ b/tools/libs/ctrl/Makefile.common @@ -24,6 +24,7 @@ OBJS-y += xc_hcall_buf.o OBJS-y += xc_foreign_memory.o OBJS-y += xc_kexec.o OBJS-y += xc_resource.o +OBJS-$(CONFIG_ARM) += xc_dt_overlay.o OBJS-$(CONFIG_X86) += xc_psr.o OBJS-$(CONFIG_X86) += xc_pagetab.o OBJS-$(CONFIG_Linux) += xc_linux.o diff --git a/tools/libs/ctrl/xc_dt_overlay.c b/tools/libs/ctrl/xc_dt_overlay.c new file mode 100644 index 0000000000..202fc906f4 --- /dev/null +++ b/tools/libs/ctrl/xc_dt_overlay.c @@ -0,0 +1,48 @@ +/* + * + * Device Tree Overlay functions. + * Copyright (C) 2021 Xilinx Inc. + * Author Vikram Garhwal + * + * This library 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 of the License. + * + * This library 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. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; If not, see . + */ + +#include "xc_private.h" + +int xc_dt_overlay(xc_interface *xch, void *overlay_fdt, + uint32_t overlay_fdt_size, uint8_t overlay_op) +{ + int err; + DECLARE_SYSCTL; + + DECLARE_HYPERCALL_BOUNCE(overlay_fdt, overlay_fdt_size, + XC_HYPERCALL_BUFFER_BOUNCE_IN); + + if ( (err = xc_hypercall_bounce_pre(xch, overlay_fdt)) ) + goto err; + + sysctl.cmd = XEN_SYSCTL_dt_overlay; + sysctl.u.dt_overlay.overlay_op = overlay_op; + sysctl.u.dt_overlay.overlay_fdt_size = overlay_fdt_size; + + set_xen_guest_handle(sysctl.u.dt_overlay.overlay_fdt, overlay_fdt); + + if ( (err = do_sysctl(xch, &sysctl)) != 0 ) + PERROR("%s failed", __func__); + +err: + xc_hypercall_bounce_post(xch, overlay_fdt); + + return err; +}