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/** @file
* VBox Host Guest Shared Memory Interface (HGSMI), sHost/Guest shared part.
*/
/*
* Copyright (C) 2006-2009 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.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef ___VBox_HGSMI_HGSMIChSetup_h
#define ___VBox_HGSMI_HGSMIChSetup_h
#include <VBox/HGSMI/HGSMI.h>
/* HGSMI setup and configuration channel commands and data structures. */
#define HGSMI_CC_HOST_FLAGS_LOCATION 0 /* Tell the host the location of HGSMIHOSTFLAGS structure,
* where the host can write information about pending
* buffers, etc, and which can be quickly polled by
* the guest without a need to port IO.
*/
typedef struct _HGSMIBUFFERLOCATION
{
HGSMIOFFSET offLocation;
HGSMISIZE cbLocation;
} HGSMIBUFFERLOCATION;
AssertCompileSize(HGSMIBUFFERLOCATION, 8);
/* HGSMI setup and configuration data structures. */
/* host->guest commands pending, should be accessed under FIFO lock only */
#define HGSMIHOSTFLAGS_COMMANDS_PENDING 0x1
/* IRQ is fired, should be accessed under VGAState::lock only */
#define HGSMIHOSTFLAGS_IRQ 0x2
#ifdef VBOX_WITH_WDDM
/* one or more guest commands is completed, should be accessed under FIFO lock only */
# define HGSMIHOSTFLAGS_GCOMMAND_COMPLETED 0x4
/* watchdog timer interrupt flag (used for debugging), should be accessed under VGAState::lock only */
# define HGSMIHOSTFLAGS_WATCHDOG 0x8
#endif
/* vsync interrupt flag, should be accessed under VGAState::lock only */
#define HGSMIHOSTFLAGS_VSYNC 0x10
typedef struct _HGSMIHOSTFLAGS
{
/* host flags can be accessed and modified in multiple threads concurrently,
* e.g. CrOpenGL HGCM and GUI threads when to completing HGSMI 3D and Video Accel respectively,
* EMT thread when dealing with HGSMI command processing, etc.
* Besides settings/cleaning flags atomically, some each flag has its own special sync restrictions,
* see commants for flags definitions above */
volatile uint32_t u32HostFlags;
uint32_t au32Reserved[3];
} HGSMIHOSTFLAGS;
AssertCompileSize(HGSMIHOSTFLAGS, 16);
#endif
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