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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp')
-rw-r--r-- | src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp b/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp new file mode 100644 index 00000000..f07382fa --- /dev/null +++ b/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp @@ -0,0 +1,61 @@ +/* $Id: SHGSMIHost.cpp $ */ +/** @file + * Missing description. + */ + +/* + * Copyright (C) 2010-2023 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 <https://www.gnu.org/licenses>. + * + * SPDX-License-Identifier: GPL-3.0-only + */ + +#include "SHGSMIHost.h" +#include <VBoxVideo.h> + +/* + * 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); +} |