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source: vbox/trunk/include/VBox/Graphics/HGSMIChSetup.h@ 76553

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1/* $Id: HGSMIChSetup.h 76553 2019-01-01 01:45:53Z vboxsync $ */
2/** @file
3 * VBox Host Guest Shared Memory Interface (HGSMI), Host/Guest shared part.
4 */
5
6/*
7 * Copyright (C) 2006-2019 Oracle Corporation
8 *
9 * Permission is hereby granted, free of charge, to any person
10 * obtaining a copy of this software and associated documentation
11 * files (the "Software"), to deal in the Software without
12 * restriction, including without limitation the rights to use,
13 * copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the
15 * Software is furnished to do so, subject to the following
16 * conditions:
17 *
18 * The above copyright notice and this permission notice shall be
19 * included in all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28 * OTHER DEALINGS IN THE SOFTWARE.
29 */
30
31#ifndef ___VBox_Graphics_HGSMIChSetup_h
32#define ___VBox_Graphics_HGSMIChSetup_h
33#ifndef RT_WITHOUT_PRAGMA_ONCE
34# pragma once
35#endif
36
37#include "HGSMIDefs.h"
38
39/* HGSMI setup and configuration channel commands and data structures. */
40/*
41 * Tell the host the location of hgsmi_host_flags structure, where the host
42 * can write information about pending buffers, etc, and which can be quickly
43 * polled by the guest without a need to port IO.
44 */
45#define HGSMI_CC_HOST_FLAGS_LOCATION 0
46
47typedef struct HGSMIBUFFERLOCATION
48{
49 HGSMIOFFSET offLocation;
50 HGSMISIZE cbLocation;
51} HGSMIBUFFERLOCATION;
52AssertCompileSize(HGSMIBUFFERLOCATION, 8);
53
54/* HGSMI setup and configuration data structures. */
55/* host->guest commands pending, should be accessed under FIFO lock only */
56#define HGSMIHOSTFLAGS_COMMANDS_PENDING UINT32_C(0x01)
57/* IRQ is fired, should be accessed under VGAState::lock only */
58#define HGSMIHOSTFLAGS_IRQ UINT32_C(0x02)
59#ifdef VBOX_WITH_WDDM
60/* one or more guest commands is completed, should be accessed under FIFO lock only */
61# define HGSMIHOSTFLAGS_GCOMMAND_COMPLETED UINT32_C(0x04)
62/* watchdog timer interrupt flag (used for debugging), should be accessed under VGAState::lock only */
63# define HGSMIHOSTFLAGS_WATCHDOG UINT32_C(0x08)
64#endif
65/* vsync interrupt flag, should be accessed under VGAState::lock only */
66#define HGSMIHOSTFLAGS_VSYNC UINT32_C(0x10)
67/** monitor hotplug flag, should be accessed under VGAState::lock only */
68#define HGSMIHOSTFLAGS_HOTPLUG UINT32_C(0x20)
69/**
70 * Cursor capability state change flag, should be accessed under
71 * VGAState::lock only. @see VBVACONF32.
72 */
73#define HGSMIHOSTFLAGS_CURSOR_CAPABILITIES UINT32_C(0x40)
74
75typedef struct HGSMIHOSTFLAGS
76{
77 /*
78 * Host flags can be accessed and modified in multiple threads
79 * concurrently, e.g. CrOpenGL HGCM and GUI threads when completing
80 * HGSMI 3D and Video Accel respectively, EMT thread when dealing with
81 * HGSMI command processing, etc.
82 * Besides settings/cleaning flags atomically, some flags have their
83 * own special sync restrictions, see comments for flags above.
84 */
85 volatile uint32_t u32HostFlags;
86 uint32_t au32Reserved[3];
87} HGSMIHOSTFLAGS;
88AssertCompileSize(HGSMIHOSTFLAGS, 16);
89
90#endif
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