Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 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..dabde46c
--- /dev/null
+++ b/src/VBox/Devices/Graphics/HGSMI/SHGSMIHost.cpp
@@ -0,0 +1,51 @@
+/* $Id: SHGSMIHost.cpp $ */
+/** @file
+ * Missing description.
+ */
+
+/*
+ * Copyright (C) 2010-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#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);
+}