blob: f07382fafae947e518ae12e46ba767e366a0e7eb (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
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);
}
|
