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/* $Id: HGSMIChSetup.h $ */
/** @file
* VBox Host Guest Shared Memory Interface (HGSMI), Host/Guest shared part.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef VBOX_INCLUDED_Graphics_HGSMIChSetup_h
#define VBOX_INCLUDED_Graphics_HGSMIChSetup_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include "HGSMIDefs.h"
/* HGSMI setup and configuration channel commands and data structures. */
/*
* Tell the host the location of hgsmi_host_flags 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.
*/
#define HGSMI_CC_HOST_FLAGS_LOCATION 0
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 UINT32_C(0x01)
/* IRQ is fired, should be accessed under VGAState::lock only */
#define HGSMIHOSTFLAGS_IRQ UINT32_C(0x02)
#ifdef VBOX_WITH_WDDM
/* one or more guest commands is completed, should be accessed under FIFO lock only */
# define HGSMIHOSTFLAGS_GCOMMAND_COMPLETED UINT32_C(0x04)
#endif
/* vsync interrupt flag, should be accessed under VGAState::lock only */
#define HGSMIHOSTFLAGS_VSYNC UINT32_C(0x10)
/** monitor hotplug flag, should be accessed under VGAState::lock only */
#define HGSMIHOSTFLAGS_HOTPLUG UINT32_C(0x20)
/**
* Cursor capability state change flag, should be accessed under
* VGAState::lock only. @see VBVACONF32.
*/
#define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES UINT32_C(0x40)
typedef struct HGSMIHOSTFLAGS
{
/*
* Host flags can be accessed and modified in multiple threads
* concurrently, e.g. CrOpenGL HGCM and GUI threads when completing
* HGSMI 3D and Video Accel respectively, EMT thread when dealing with
* HGSMI command processing, etc.
* Besides settings/cleaning flags atomically, some flags have their
* own special sync restrictions, see comments for flags above.
*/
volatile uint32_t u32HostFlags;
uint32_t au32Reserved[3];
} HGSMIHOSTFLAGS;
AssertCompileSize(HGSMIHOSTFLAGS, 16);
#endif /* !VBOX_INCLUDED_Graphics_HGSMIChSetup_h */
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