From 16f504a9dca3fe3b70568f67b7d41241ae485288 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:49:04 +0200 Subject: Adding upstream version 7.0.6-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp | 61 ++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp (limited to 'src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp') diff --git a/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp b/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp new file mode 100644 index 00000000..ddd323ad --- /dev/null +++ b/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp @@ -0,0 +1,61 @@ +/* $Id: SHGSMIHost.cpp $ */ +/** @file + * Missing description. + */ + +/* + * Copyright (C) 2010-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + * + * SPDX-License-Identifier: GPL-3.0-only + */ + +#include "SHGSMIHost.h" +#include + +/* + * VBOXSHGSMI made on top HGSMI and allows receiving notifications + * about G->H command completion + */ + +static int vboxSHGSMICommandCompleteAsynch (PHGSMIINSTANCE pIns, VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *pHdr) +{ + bool fDoIrq = !!(pHdr->fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ) + || !!(pHdr->fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ_FORCE); + return HGSMICompleteGuestCommand(pIns, pHdr, fDoIrq); +} + +void VBoxSHGSMICommandMarkAsynchCompletion(void RT_UNTRUSTED_VOLATILE_GUEST *pvData) +{ + VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *pHdr = VBoxSHGSMIBufferHeader(pvData); + Assert(!(pHdr->fFlags & VBOXSHGSMI_FLAG_HG_ASYNCH)); + pHdr->fFlags |= VBOXSHGSMI_FLAG_HG_ASYNCH; +} + +int VBoxSHGSMICommandComplete(PHGSMIINSTANCE pIns, void RT_UNTRUSTED_VOLATILE_GUEST *pvData) +{ + VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *pHdr = VBoxSHGSMIBufferHeader(pvData); + uint32_t fFlags = pHdr->fFlags; + ASMCompilerBarrier(); + if ( !(fFlags & VBOXSHGSMI_FLAG_HG_ASYNCH) /* <- check if synchronous completion */ + && !(fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_FORCE)) /* <- check if can complete synchronously */ + return VINF_SUCCESS; + + pHdr->fFlags = fFlags | VBOXSHGSMI_FLAG_HG_ASYNCH; + return vboxSHGSMICommandCompleteAsynch(pIns, pHdr); +} -- cgit v1.2.3