| 1 | /* $Id: SHGSMIHost.cpp 62498 2016-07-22 19:04:20Z vboxsync $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (C) 2010-2016 Oracle Corporation
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| 5 | *
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| 6 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 7 | * available from http://www.virtualbox.org. This file is free software;
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| 8 | * you can redistribute it and/or modify it under the terms of the GNU
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| 9 | * General Public License (GPL) as published by the Free Software
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| 10 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 11 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 12 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 13 | */
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| 14 |
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| 15 | #include "SHGSMIHost.h"
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| 16 | #include <VBox/VBoxVideo.h>
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| 17 |
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| 18 | /*
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| 19 | * VBOXSHGSMI made on top HGSMI and allows receiving notifications
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| 20 | * about G->H command completion
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| 21 | */
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| 22 | static bool vboxSHGSMICommandCanCompleteSynch (PVBOXSHGSMIHEADER pHdr)
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| 23 | {
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| 24 | return !(pHdr->fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_FORCE);
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| 25 | }
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| 26 |
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| 27 | static int vboxSHGSMICommandCompleteAsynch (PHGSMIINSTANCE pIns, PVBOXSHGSMIHEADER pHdr)
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| 28 | {
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| 29 | bool bDoIrq = !!(pHdr->fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ)
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| 30 | || !!(pHdr->fFlags & VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ_FORCE);
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| 31 | return HGSMICompleteGuestCommand(pIns, pHdr, bDoIrq);
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| 32 | }
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| 33 |
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| 34 | void VBoxSHGSMICommandMarkAsynchCompletion (void *pvData)
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| 35 | {
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| 36 | PVBOXSHGSMIHEADER pHdr = VBoxSHGSMIBufferHeader (pvData);
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| 37 | Assert(!(pHdr->fFlags & VBOXSHGSMI_FLAG_HG_ASYNCH));
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| 38 | pHdr->fFlags |= VBOXSHGSMI_FLAG_HG_ASYNCH;
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| 39 | }
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| 40 |
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| 41 | int VBoxSHGSMICommandComplete (PHGSMIINSTANCE pIns, void *pvData)
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| 42 | {
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| 43 | PVBOXSHGSMIHEADER pHdr = VBoxSHGSMIBufferHeader (pvData);
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| 44 | if (!(pHdr->fFlags & VBOXSHGSMI_FLAG_HG_ASYNCH) /* <- check if synchronous completion */
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| 45 | && vboxSHGSMICommandCanCompleteSynch(pHdr)) /* <- check if can complete synchronously */
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| 46 | return VINF_SUCCESS;
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| 47 | pHdr->fFlags |= VBOXSHGSMI_FLAG_HG_ASYNCH;
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| 48 | return vboxSHGSMICommandCompleteAsynch(pIns, pHdr);
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| 49 | }
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