Adding upstream version 7.0.6-dfsg.upstream/7.0.6-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1490 insertions, 0 deletions

diff --git a/include/VBox/Graphics/VBoxVideo.h b/include/VBox/Graphics/VBoxVideo.h
new file mode 100644
index 00000000..ca779315
--- /dev/null
+++ b/include/VBox/Graphics/VBoxVideo.h
@@ -0,0 +1,1490 @@
+/* $Id: VBoxVideo.h $ */
+/** @file
+ * VirtualBox Video interface.
+ */
+
+/*
+ * Copyright (C) 2006-2022 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_VBoxVideo_h
+#define VBOX_INCLUDED_Graphics_VBoxVideo_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include "VBoxVideoIPRT.h"
+
+/* this should be in sync with monitorCount <xsd:maxInclusive value="64"/> in src/VBox/Main/xml/VirtualBox-settings-common.xsd */
+#define VBOX_VIDEO_MAX_SCREENS 64
+
+/*
+ * The last 4096 bytes of the guest VRAM contains the generic info for all
+ * DualView chunks: sizes and offsets of chunks. This is filled by miniport.
+ *
+ * Last 4096 bytes of each chunk contain chunk specific data: framebuffer info,
+ * etc. This is used exclusively by the corresponding instance of a display driver.
+ *
+ * The VRAM layout:
+ *     Last 4096 bytes - Adapter information area.
+ *     4096 bytes aligned miniport heap (value specified in the config rouded up).
+ *     Slack - what left after dividing the VRAM.
+ *     4096 bytes aligned framebuffers:
+ *       last 4096 bytes of each framebuffer is the display information area.
+ *
+ * The Virtual Graphics Adapter information in the guest VRAM is stored by the
+ * guest video driver using structures prepended by VBOXVIDEOINFOHDR.
+ *
+ * When the guest driver writes dword 0 to the VBE_DISPI_INDEX_VBOX_VIDEO
+ * the host starts to process the info. The first element at the start of
+ * the 4096 bytes region should be normally be a LINK that points to
+ * actual information chain. That way the guest driver can have some
+ * fixed layout of the information memory block and just rewrite
+ * the link to point to relevant memory chain.
+ *
+ * The processing stops at the END element.
+ *
+ * The host can access the memory only when the port IO is processed.
+ * All data that will be needed later must be copied from these 4096 bytes.
+ * But other VRAM can be used by host until the mode is disabled.
+ *
+ * The guest driver writes dword 0xffffffff to the VBE_DISPI_INDEX_VBOX_VIDEO
+ * to disable the mode.
+ *
+ * VBE_DISPI_INDEX_VBOX_VIDEO is used to read the configuration information
+ * from the host and issue commands to the host.
+ *
+ * The guest writes the VBE_DISPI_INDEX_VBOX_VIDEO index register, the the
+ * following operations with the VBE data register can be performed:
+ *
+ * Operation            Result
+ * write 16 bit value   NOP
+ * read 16 bit value    count of monitors
+ * write 32 bit value   sets the vbox command value and the command processed by the host
+ * read 32 bit value    result of the last vbox command is returned
+ */
+
+#define VBOX_VIDEO_PRIMARY_SCREEN 0
+#define VBOX_VIDEO_NO_SCREEN ~0
+
+/**
+ * VBVA command header.
+ *
+ * @todo Where does this fit in?
+ */
+typedef struct VBVACMDHDR
+{
+   /** Coordinates of affected rectangle. */
+   int16_t x;
+   int16_t y;
+   uint16_t w;
+   uint16_t h;
+} VBVACMDHDR;
+AssertCompileSize(VBVACMDHDR, 8);
+
+/** @name VBVA ring defines.
+ *
+ * The VBVA ring buffer is suitable for transferring large (< 2GB) amount of
+ * data. For example big bitmaps which do not fit to the buffer.
+ *
+ * Guest starts writing to the buffer by initializing a record entry in the
+ * aRecords queue. VBVA_F_RECORD_PARTIAL indicates that the record is being
+ * written. As data is written to the ring buffer, the guest increases off32End
+ * for the record.
+ *
+ * The host reads the aRecords on flushes and processes all completed records.
+ * When host encounters situation when only a partial record presents and
+ * cbRecord & ~VBVA_F_RECORD_PARTIAL >= VBVA_RING_BUFFER_SIZE -
+ * VBVA_RING_BUFFER_THRESHOLD, the host fetched all record data and updates
+ * off32Head. After that on each flush the host continues fetching the data
+ * until the record is completed.
+ *
+ */
+#define VBVA_RING_BUFFER_SIZE        (_4M - _1K)
+#define VBVA_RING_BUFFER_THRESHOLD   (4 * _1K)
+
+#define VBVA_MAX_RECORDS (64)
+
+#define VBVA_F_MODE_ENABLED         UINT32_C(0x00000001)
+#define VBVA_F_MODE_VRDP            UINT32_C(0x00000002)
+#define VBVA_F_MODE_VRDP_RESET      UINT32_C(0x00000004)
+#define VBVA_F_MODE_VRDP_ORDER_MASK UINT32_C(0x00000008)
+
+#define VBVA_F_STATE_PROCESSING     UINT32_C(0x00010000)
+
+#define VBVA_F_RECORD_PARTIAL       UINT32_C(0x80000000)
+
+/**
+ * VBVA record.
+ */
+typedef struct VBVARECORD
+{
+    /** The length of the record. Changed by guest. */
+    uint32_t cbRecord;
+} VBVARECORD;
+AssertCompileSize(VBVARECORD, 4);
+
+/* The size of the information. */
+/*
+ * The minimum HGSMI heap size is PAGE_SIZE (4096 bytes) and is a restriction of the
+ * runtime heapsimple API. Use minimum 2 pages here, because the info area also may
+ * contain other data (for example HGSMIHOSTFLAGS structure).
+ */
+#ifndef VBOX_XPDM_MINIPORT
+# define VBVA_ADAPTER_INFORMATION_SIZE (64*_1K)
+#else
+#define VBVA_ADAPTER_INFORMATION_SIZE  (16*_1K)
+#define VBVA_DISPLAY_INFORMATION_SIZE  (64*_1K)
+#endif
+#define VBVA_MIN_BUFFER_SIZE           (64*_1K)
+
+
+/* The value for port IO to let the adapter to interpret the adapter memory. */
+#define VBOX_VIDEO_DISABLE_ADAPTER_MEMORY        0xFFFFFFFF
+
+/* The value for port IO to let the adapter to interpret the adapter memory. */
+#define VBOX_VIDEO_INTERPRET_ADAPTER_MEMORY      0x00000000
+
+/* The value for port IO to let the adapter to interpret the display memory.
+ * The display number is encoded in low 16 bits.
+ */
+#define VBOX_VIDEO_INTERPRET_DISPLAY_MEMORY_BASE 0x00010000
+
+
+/* The end of the information. */
+#define VBOX_VIDEO_INFO_TYPE_END          0
+/* Instructs the host to fetch the next VBOXVIDEOINFOHDR at the given offset of VRAM. */
+#define VBOX_VIDEO_INFO_TYPE_LINK         1
+/* Information about a display memory position. */
+#define VBOX_VIDEO_INFO_TYPE_DISPLAY      2
+/* Information about a screen. */
+#define VBOX_VIDEO_INFO_TYPE_SCREEN       3
+/* Information about host notifications for the driver. */
+#define VBOX_VIDEO_INFO_TYPE_HOST_EVENTS  4
+/* Information about non-volatile guest VRAM heap. */
+#define VBOX_VIDEO_INFO_TYPE_NV_HEAP      5
+/* VBVA enable/disable. */
+#define VBOX_VIDEO_INFO_TYPE_VBVA_STATUS  6
+/* VBVA flush. */
+#define VBOX_VIDEO_INFO_TYPE_VBVA_FLUSH   7
+/* Query configuration value. */
+#define VBOX_VIDEO_INFO_TYPE_QUERY_CONF32 8
+
+
+#pragma pack(1)
+typedef struct VBOXVIDEOINFOHDR
+{
+    uint8_t u8Type;
+    uint8_t u8Reserved;
+    uint16_t u16Length;
+} VBOXVIDEOINFOHDR;
+
+
+typedef struct VBOXVIDEOINFOLINK
+{
+    /* Relative offset in VRAM */
+    int32_t i32Offset;
+} VBOXVIDEOINFOLINK;
+
+
+/* Resides in adapter info memory. Describes a display VRAM chunk. */
+typedef struct VBOXVIDEOINFODISPLAY
+{
+    /* Index of the framebuffer assigned by guest. */
+    uint32_t u32Index;
+
+    /* Absolute offset in VRAM of the framebuffer to be displayed on the monitor. */
+    uint32_t u32Offset;
+
+    /* The size of the memory that can be used for the screen. */
+    uint32_t u32FramebufferSize;
+
+    /* The size of the memory that is used for the Display information.
+     * The information is at u32Offset + u32FramebufferSize
+     */
+    uint32_t u32InformationSize;
+
+} VBOXVIDEOINFODISPLAY;
+
+
+/* Resides in display info area, describes the current video mode. */
+#define VBOX_VIDEO_INFO_SCREEN_F_NONE   0x00
+#define VBOX_VIDEO_INFO_SCREEN_F_ACTIVE 0x01
+
+typedef struct VBOXVIDEOINFOSCREEN
+{
+    /* Physical X origin relative to the primary screen. */
+    int32_t xOrigin;
+
+    /* Physical Y origin relative to the primary screen. */
+    int32_t yOrigin;
+
+    /* The scan line size in bytes. */
+    uint32_t u32LineSize;
+
+    /* Width of the screen. */
+    uint16_t u16Width;
+
+    /* Height of the screen. */
+    uint16_t u16Height;
+
+    /* Color depth. */
+    uint8_t bitsPerPixel;
+
+    /* VBOX_VIDEO_INFO_SCREEN_F_* */
+    uint8_t u8Flags;
+} VBOXVIDEOINFOSCREEN;
+
+/* The guest initializes the structure to 0. The positions of the structure in the
+ * display info area must not be changed, host will update the structure. Guest checks
+ * the events and modifies the structure as a response to host.
+ */
+#define VBOX_VIDEO_INFO_HOST_EVENTS_F_NONE        0x00000000
+#define VBOX_VIDEO_INFO_HOST_EVENTS_F_VRDP_RESET  0x00000080
+
+typedef struct VBOXVIDEOINFOHOSTEVENTS
+{
+    /* Host events. */
+    uint32_t fu32Events;
+} VBOXVIDEOINFOHOSTEVENTS;
+
+/* Resides in adapter info memory. Describes the non-volatile VRAM heap. */
+typedef struct VBOXVIDEOINFONVHEAP
+{
+    /* Absolute offset in VRAM of the start of the heap. */
+    uint32_t u32HeapOffset;
+
+    /* The size of the heap. */
+    uint32_t u32HeapSize;
+
+} VBOXVIDEOINFONVHEAP;
+
+/* Display information area. */
+typedef struct VBOXVIDEOINFOVBVASTATUS
+{
+    /* Absolute offset in VRAM of the start of the VBVA QUEUE. 0 to disable VBVA. */
+    uint32_t u32QueueOffset;
+
+    /* The size of the VBVA QUEUE. 0 to disable VBVA. */
+    uint32_t u32QueueSize;
+
+} VBOXVIDEOINFOVBVASTATUS;
+
+typedef struct VBOXVIDEOINFOVBVAFLUSH
+{
+    uint32_t u32DataStart;
+
+    uint32_t u32DataEnd;
+
+} VBOXVIDEOINFOVBVAFLUSH;
+
+#define VBOX_VIDEO_QCI32_MONITOR_COUNT       0
+#define VBOX_VIDEO_QCI32_OFFSCREEN_HEAP_SIZE 1
+
+typedef struct VBOXVIDEOINFOQUERYCONF32
+{
+    uint32_t u32Index;
+
+    uint32_t u32Value;
+
+} VBOXVIDEOINFOQUERYCONF32;
+#pragma pack()
+
+#ifdef VBOX_WITH_VIDEOHWACCEL
+#pragma pack(1)
+
+#define VBOXVHWA_VERSION_MAJ 0
+#define VBOXVHWA_VERSION_MIN 0
+#define VBOXVHWA_VERSION_BLD 6
+#define VBOXVHWA_VERSION_RSV 0
+
+typedef enum
+{
+    VBOXVHWACMD_TYPE_SURF_CANCREATE = 1,
+    VBOXVHWACMD_TYPE_SURF_CREATE,
+    VBOXVHWACMD_TYPE_SURF_DESTROY,
+    VBOXVHWACMD_TYPE_SURF_LOCK,
+    VBOXVHWACMD_TYPE_SURF_UNLOCK,
+    VBOXVHWACMD_TYPE_SURF_BLT,
+    VBOXVHWACMD_TYPE_SURF_FLIP,
+    VBOXVHWACMD_TYPE_SURF_OVERLAY_UPDATE,
+    VBOXVHWACMD_TYPE_SURF_OVERLAY_SETPOSITION,
+    VBOXVHWACMD_TYPE_SURF_COLORKEY_SET,
+    VBOXVHWACMD_TYPE_QUERY_INFO1,
+    VBOXVHWACMD_TYPE_QUERY_INFO2,
+    VBOXVHWACMD_TYPE_ENABLE,
+    VBOXVHWACMD_TYPE_DISABLE,
+    VBOXVHWACMD_TYPE_HH_CONSTRUCT,
+    VBOXVHWACMD_TYPE_HH_RESET
+#ifdef VBOX_WITH_WDDM
+    , VBOXVHWACMD_TYPE_SURF_GETINFO
+    , VBOXVHWACMD_TYPE_SURF_COLORFILL
+#endif
+    , VBOXVHWACMD_TYPE_HH_DISABLE
+    , VBOXVHWACMD_TYPE_HH_ENABLE
+    , VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEBEGIN
+    , VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEEND
+    , VBOXVHWACMD_TYPE_HH_SAVESTATE_SAVEPERFORM
+    , VBOXVHWACMD_TYPE_HH_SAVESTATE_LOADPERFORM
+} VBOXVHWACMD_TYPE;
+
+/** The command processing was asynch, set by the host to indicate asynch
+ * command completion. Must not be cleared once set, the command completion is
+ * performed by issuing a host->guest completion command while keeping this
+ * flag unchanged */
+#define VBOXVHWACMD_FLAG_HG_ASYNCH               UINT32_C(0x00010000)
+/** asynch completion is performed by issuing the event */
+#define VBOXVHWACMD_FLAG_GH_ASYNCH_EVENT         UINT32_C(0x00000001)
+/** issue interrupt on asynch completion */
+#define VBOXVHWACMD_FLAG_GH_ASYNCH_IRQ           UINT32_C(0x00000002)
+/** Guest does not do any op on completion of this command, the host may copy
+ * the command and indicate that it does not need the command anymore
+ * by setting the VBOXVHWACMD_FLAG_HG_ASYNCH_RETURNED flag */
+#define VBOXVHWACMD_FLAG_GH_ASYNCH_NOCOMPLETION  UINT32_C(0x00000004)
+/** the host has copied the VBOXVHWACMD_FLAG_GH_ASYNCH_NOCOMPLETION command and returned it to the guest */
+#define VBOXVHWACMD_FLAG_HG_ASYNCH_RETURNED      UINT32_C(0x00020000)
+/** this is the host->host cmd, i.e. a configuration command posted by the host to the framebuffer */
+#define VBOXVHWACMD_FLAG_HH_CMD                  UINT32_C(0x10000000)
+
+typedef struct VBOXVHWACMD
+{
+    VBOXVHWACMD_TYPE enmCmd;     /**< command type */
+    volatile int32_t rc;         /**< command result */
+    int32_t iDisplay;            /**< display index */
+    volatile int32_t Flags;      /**< ORed VBOXVHWACMD_FLAG_xxx values */
+    uint64_t GuestVBVAReserved1; /**< field internally used by the guest VBVA cmd handling, must NOT be modified by clients */
+    uint64_t GuestVBVAReserved2; /**< field internally used by the guest VBVA cmd handling, must NOT be modified by clients */
+    volatile uint32_t cRefs;
+    int32_t Reserved;
+    union
+    {
+        struct VBOXVHWACMD *pNext;
+        uint32_t            offNext;
+        uint64_t Data;                  /**< the body is 64-bit aligned */
+    } u;
+    char body[1];
+} VBOXVHWACMD;
+
+#define VBOXVHWACMD_HEADSIZE()                          (RT_OFFSETOF(VBOXVHWACMD, body))
+#define VBOXVHWACMD_SIZE_FROMBODYSIZE(a_cbBody)         (VBOXVHWACMD_HEADSIZE() + (a_cbBody))
+#define VBOXVHWACMD_SIZE(a_tTypeCmd)                    (VBOXVHWACMD_SIZE_FROMBODYSIZE(sizeof(a_tTypeCmd)))
+typedef unsigned int VBOXVHWACMD_LENGTH;
+typedef uint64_t VBOXVHWA_SURFHANDLE;
+#define VBOXVHWA_SURFHANDLE_INVALID                     UINT64_C(0)
+#define VBOXVHWACMD_BODY(a_pHdr, a_TypeBody)            ( (a_TypeBody RT_UNTRUSTED_VOLATILE_HSTGST *)&(a_pHdr)->body[0] )
+#if !defined(IN_GUEST) && defined(IN_RING3)
+# define VBOXVHWACMD_BODY_HOST_HEAP(a_pHdr, a_TypeBody) ( (a_TypeBody *)&(a_pHdr)->body[0] )
+#endif
+#define VBOXVHWACMD_HEAD(a_pBody)\
+    ( (VBOXVHWACMD RT_UNTRUSTED_VOLATILE_HSTGST *)((uint8_t *)(a_pBody) - RT_OFFSETOF(VBOXVHWACMD, body)))
+
+typedef struct VBOXVHWA_RECTL
+{
+    int32_t left;
+    int32_t top;
+    int32_t right;
+    int32_t bottom;
+} VBOXVHWA_RECTL;
+
+typedef struct VBOXVHWA_COLORKEY
+{
+    uint32_t low;
+    uint32_t high;
+} VBOXVHWA_COLORKEY;
+
+typedef struct VBOXVHWA_PIXELFORMAT
+{
+    uint32_t flags;
+    uint32_t fourCC;
+    union
+    {
+        uint32_t rgbBitCount;
+        uint32_t yuvBitCount;
+    } c;
+
+    union
+    {
+        uint32_t rgbRBitMask;
+        uint32_t yuvYBitMask;
+    } m1;
+
+    union
+    {
+        uint32_t rgbGBitMask;
+        uint32_t yuvUBitMask;
+    } m2;
+
+    union
+    {
+        uint32_t rgbBBitMask;
+        uint32_t yuvVBitMask;
+    } m3;
+
+    union
+    {
+        uint32_t rgbABitMask;
+    } m4;
+
+    uint32_t Reserved;
+} VBOXVHWA_PIXELFORMAT;
+
+typedef struct VBOXVHWA_SURFACEDESC
+{
+    uint32_t flags;
+    uint32_t height;
+    uint32_t width;
+    uint32_t pitch;
+    uint32_t sizeX;
+    uint32_t sizeY;
+    uint32_t cBackBuffers;
+    uint32_t Reserved;
+    VBOXVHWA_COLORKEY DstOverlayCK;
+    VBOXVHWA_COLORKEY DstBltCK;
+    VBOXVHWA_COLORKEY SrcOverlayCK;
+    VBOXVHWA_COLORKEY SrcBltCK;
+    VBOXVHWA_PIXELFORMAT PixelFormat;
+    uint32_t surfCaps;
+    uint32_t Reserved2;
+    VBOXVHWA_SURFHANDLE hSurf;
+    uint64_t offSurface;
+} VBOXVHWA_SURFACEDESC;
+
+typedef struct VBOXVHWA_BLTFX
+{
+    uint32_t flags;
+    uint32_t rop;
+    uint32_t rotationOp;
+    uint32_t rotation;
+    uint32_t fillColor;
+    uint32_t Reserved;
+    VBOXVHWA_COLORKEY DstCK;
+    VBOXVHWA_COLORKEY SrcCK;
+} VBOXVHWA_BLTFX;
+
+typedef struct VBOXVHWA_OVERLAYFX
+{
+    uint32_t flags;
+    uint32_t Reserved1;
+    uint32_t fxFlags;
+    uint32_t Reserved2;
+    VBOXVHWA_COLORKEY DstCK;
+    VBOXVHWA_COLORKEY SrcCK;
+} VBOXVHWA_OVERLAYFX;
+
+#define VBOXVHWA_CAPS_BLT               0x00000040
+#define VBOXVHWA_CAPS_BLTCOLORFILL      0x04000000
+#define VBOXVHWA_CAPS_BLTFOURCC         0x00000100
+#define VBOXVHWA_CAPS_BLTSTRETCH        0x00000200
+#define VBOXVHWA_CAPS_BLTQUEUE          0x00000080
+
+#define VBOXVHWA_CAPS_OVERLAY           0x00000800
+#define VBOXVHWA_CAPS_OVERLAYFOURCC     0x00002000
+#define VBOXVHWA_CAPS_OVERLAYSTRETCH    0x00004000
+#define VBOXVHWA_CAPS_OVERLAYCANTCLIP   0x00001000
+
+#define VBOXVHWA_CAPS_COLORKEY          0x00400000
+#define VBOXVHWA_CAPS_COLORKEYHWASSIST  0x01000000
+
+#define VBOXVHWA_SCAPS_BACKBUFFER       0x00000004
+#define VBOXVHWA_SCAPS_COMPLEX          0x00000008
+#define VBOXVHWA_SCAPS_FLIP             0x00000010
+#define VBOXVHWA_SCAPS_FRONTBUFFER      0x00000020
+#define VBOXVHWA_SCAPS_OFFSCREENPLAIN   0x00000040
+#define VBOXVHWA_SCAPS_OVERLAY          0x00000080
+#define VBOXVHWA_SCAPS_PRIMARYSURFACE   0x00000200
+#define VBOXVHWA_SCAPS_SYSTEMMEMORY     0x00000800
+#define VBOXVHWA_SCAPS_VIDEOMEMORY      0x00004000
+#define VBOXVHWA_SCAPS_VISIBLE          0x00008000
+#define VBOXVHWA_SCAPS_LOCALVIDMEM      0x10000000
+
+#define VBOXVHWA_PF_PALETTEINDEXED8     0x00000020
+#define VBOXVHWA_PF_RGB                 0x00000040
+#define VBOXVHWA_PF_RGBTOYUV            0x00000100
+#define VBOXVHWA_PF_YUV                 0x00000200
+#define VBOXVHWA_PF_FOURCC              0x00000004
+
+#define VBOXVHWA_LOCK_DISCARDCONTENTS   0x00002000
+
+#define VBOXVHWA_CFG_ENABLED            0x00000001
+
+#define VBOXVHWA_SD_BACKBUFFERCOUNT     0x00000020
+#define VBOXVHWA_SD_CAPS                0x00000001
+#define VBOXVHWA_SD_CKDESTBLT           0x00004000
+#define VBOXVHWA_SD_CKDESTOVERLAY       0x00002000
+#define VBOXVHWA_SD_CKSRCBLT            0x00010000
+#define VBOXVHWA_SD_CKSRCOVERLAY        0x00008000
+#define VBOXVHWA_SD_HEIGHT              0x00000002
+#define VBOXVHWA_SD_PITCH               0x00000008
+#define VBOXVHWA_SD_PIXELFORMAT         0x00001000
+/*#define VBOXVHWA_SD_REFRESHRATE       0x00040000*/
+#define VBOXVHWA_SD_WIDTH               0x00000004
+
+#define VBOXVHWA_CKEYCAPS_DESTBLT                  0x00000001
+#define VBOXVHWA_CKEYCAPS_DESTBLTCLRSPACE          0x00000002
+#define VBOXVHWA_CKEYCAPS_DESTBLTCLRSPACEYUV       0x00000004
+#define VBOXVHWA_CKEYCAPS_DESTBLTYUV               0x00000008
+#define VBOXVHWA_CKEYCAPS_DESTOVERLAY              0x00000010
+#define VBOXVHWA_CKEYCAPS_DESTOVERLAYCLRSPACE      0x00000020
+#define VBOXVHWA_CKEYCAPS_DESTOVERLAYCLRSPACEYUV   0x00000040
+#define VBOXVHWA_CKEYCAPS_DESTOVERLAYONEACTIVE     0x00000080
+#define VBOXVHWA_CKEYCAPS_DESTOVERLAYYUV           0x00000100
+#define VBOXVHWA_CKEYCAPS_SRCBLT                   0x00000200
+#define VBOXVHWA_CKEYCAPS_SRCBLTCLRSPACE           0x00000400
+#define VBOXVHWA_CKEYCAPS_SRCBLTCLRSPACEYUV        0x00000800
+#define VBOXVHWA_CKEYCAPS_SRCBLTYUV                0x00001000
+#define VBOXVHWA_CKEYCAPS_SRCOVERLAY               0x00002000
+#define VBOXVHWA_CKEYCAPS_SRCOVERLAYCLRSPACE       0x00004000
+#define VBOXVHWA_CKEYCAPS_SRCOVERLAYCLRSPACEYUV    0x00008000
+#define VBOXVHWA_CKEYCAPS_SRCOVERLAYONEACTIVE      0x00010000
+#define VBOXVHWA_CKEYCAPS_SRCOVERLAYYUV            0x00020000
+#define VBOXVHWA_CKEYCAPS_NOCOSTOVERLAY            0x00040000
+
+#define VBOXVHWA_BLT_COLORFILL                      0x00000400
+#define VBOXVHWA_BLT_DDFX                           0x00000800
+#define VBOXVHWA_BLT_EXTENDED_FLAGS                 0x40000000
+#define VBOXVHWA_BLT_EXTENDED_LINEAR_CONTENT        0x00000004
+#define VBOXVHWA_BLT_EXTENDED_PRESENTATION_STRETCHFACTOR 0x00000010
+#define VBOXVHWA_BLT_KEYDESTOVERRIDE                0x00004000
+#define VBOXVHWA_BLT_KEYSRCOVERRIDE                 0x00010000
+#define VBOXVHWA_BLT_LAST_PRESENTATION              0x20000000
+#define VBOXVHWA_BLT_PRESENTATION                   0x10000000
+#define VBOXVHWA_BLT_ROP                            0x00020000
+
+
+#define VBOXVHWA_OVER_DDFX                          0x00080000
+#define VBOXVHWA_OVER_HIDE                          0x00000200
+#define VBOXVHWA_OVER_KEYDEST                       0x00000400
+#define VBOXVHWA_OVER_KEYDESTOVERRIDE               0x00000800
+#define VBOXVHWA_OVER_KEYSRC                        0x00001000
+#define VBOXVHWA_OVER_KEYSRCOVERRIDE                0x00002000
+#define VBOXVHWA_OVER_SHOW                          0x00004000
+
+#define VBOXVHWA_CKEY_COLORSPACE                    0x00000001
+#define VBOXVHWA_CKEY_DESTBLT                       0x00000002
+#define VBOXVHWA_CKEY_DESTOVERLAY                   0x00000004
+#define VBOXVHWA_CKEY_SRCBLT                        0x00000008
+#define VBOXVHWA_CKEY_SRCOVERLAY                    0x00000010
+
+#define VBOXVHWA_BLT_ARITHSTRETCHY                  0x00000001
+#define VBOXVHWA_BLT_MIRRORLEFTRIGHT                0x00000002
+#define VBOXVHWA_BLT_MIRRORUPDOWN                   0x00000004
+
+#define VBOXVHWA_OVERFX_ARITHSTRETCHY               0x00000001
+#define VBOXVHWA_OVERFX_MIRRORLEFTRIGHT             0x00000002
+#define VBOXVHWA_OVERFX_MIRRORUPDOWN                0x00000004
+
+#define VBOXVHWA_CAPS2_CANRENDERWINDOWED            0x00080000
+#define VBOXVHWA_CAPS2_WIDESURFACES                 0x00001000
+#define VBOXVHWA_CAPS2_COPYFOURCC                   0x00008000
+/*#define VBOXVHWA_CAPS2_FLIPINTERVAL                 0x00200000*/
+/*#define VBOXVHWA_CAPS2_FLIPNOVSYNC                  0x00400000*/
+
+
+#define VBOXVHWA_OFFSET64_VOID        (UINT64_MAX)
+
+typedef struct VBOXVHWA_VERSION
+{
+    uint32_t maj;
+    uint32_t min;
+    uint32_t bld;
+    uint32_t reserved;
+} VBOXVHWA_VERSION;
+
+#define VBOXVHWA_VERSION_INIT(_pv) do { \
+        (_pv)->maj = VBOXVHWA_VERSION_MAJ; \
+        (_pv)->min = VBOXVHWA_VERSION_MIN; \
+        (_pv)->bld = VBOXVHWA_VERSION_BLD; \
+        (_pv)->reserved = VBOXVHWA_VERSION_RSV; \
+        } while(0)
+
+typedef struct VBOXVHWACMD_QUERYINFO1
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_VERSION guestVersion;
+        } in;
+
+        struct
+        {
+            uint32_t cfgFlags;
+            uint32_t caps;
+
+            uint32_t caps2;
+            uint32_t colorKeyCaps;
+
+            uint32_t stretchCaps;
+            uint32_t surfaceCaps;
+
+            uint32_t numOverlays;
+            uint32_t curOverlays;
+
+            uint32_t numFourCC;
+            uint32_t reserved;
+        } out;
+    } u;
+} VBOXVHWACMD_QUERYINFO1;
+
+typedef struct VBOXVHWACMD_QUERYINFO2
+{
+    uint32_t numFourCC;
+    uint32_t FourCC[1];
+} VBOXVHWACMD_QUERYINFO2;
+
+#define VBOXVHWAINFO2_SIZE(_cFourCC) RT_UOFFSETOF_DYN(VBOXVHWACMD_QUERYINFO2, FourCC[_cFourCC])
+
+typedef struct VBOXVHWACMD_SURF_CANCREATE
+{
+    VBOXVHWA_SURFACEDESC SurfInfo;
+    union
+    {
+        struct
+        {
+            uint32_t bIsDifferentPixelFormat;
+            uint32_t Reserved;
+        } in;
+
+        struct
+        {
+            int32_t ErrInfo;
+        } out;
+    } u;
+} VBOXVHWACMD_SURF_CANCREATE;
+
+typedef struct VBOXVHWACMD_SURF_CREATE
+{
+    VBOXVHWA_SURFACEDESC SurfInfo;
+} VBOXVHWACMD_SURF_CREATE;
+
+#ifdef VBOX_WITH_WDDM
+typedef struct VBOXVHWACMD_SURF_GETINFO
+{
+    VBOXVHWA_SURFACEDESC SurfInfo;
+} VBOXVHWACMD_SURF_GETINFO;
+#endif
+
+typedef struct VBOXVHWACMD_SURF_DESTROY
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hSurf;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_DESTROY;
+
+typedef struct VBOXVHWACMD_SURF_LOCK
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hSurf;
+            uint64_t offSurface;
+            uint32_t flags;
+            uint32_t rectValid;
+            VBOXVHWA_RECTL rect;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_LOCK;
+
+typedef struct VBOXVHWACMD_SURF_UNLOCK
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hSurf;
+            uint32_t xUpdatedMemValid;
+            uint32_t reserved;
+            VBOXVHWA_RECTL xUpdatedMemRect;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_UNLOCK;
+
+typedef struct VBOXVHWACMD_SURF_BLT
+{
+    uint64_t DstGuestSurfInfo;
+    uint64_t SrcGuestSurfInfo;
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hDstSurf;
+            uint64_t offDstSurface;
+            VBOXVHWA_RECTL dstRect;
+            VBOXVHWA_SURFHANDLE hSrcSurf;
+            uint64_t offSrcSurface;
+            VBOXVHWA_RECTL srcRect;
+            uint32_t flags;
+            uint32_t xUpdatedSrcMemValid;
+            VBOXVHWA_BLTFX desc;
+            VBOXVHWA_RECTL xUpdatedSrcMemRect;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_BLT;
+
+#ifdef VBOX_WITH_WDDM
+typedef struct VBOXVHWACMD_SURF_COLORFILL
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hSurf;
+            uint64_t offSurface;
+            uint32_t u32Reserved;
+            uint32_t cRects;
+            VBOXVHWA_RECTL aRects[1];
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_COLORFILL;
+#endif
+
+typedef struct VBOXVHWACMD_SURF_FLIP
+{
+    uint64_t TargGuestSurfInfo;
+    uint64_t CurrGuestSurfInfo;
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hTargSurf;
+            uint64_t offTargSurface;
+            VBOXVHWA_SURFHANDLE hCurrSurf;
+            uint64_t offCurrSurface;
+            uint32_t flags;
+            uint32_t xUpdatedTargMemValid;
+            VBOXVHWA_RECTL xUpdatedTargMemRect;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_FLIP;
+
+typedef struct VBOXVHWACMD_SURF_COLORKEY_SET
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hSurf;
+            uint64_t offSurface;
+            VBOXVHWA_COLORKEY CKey;
+            uint32_t flags;
+            uint32_t reserved;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_COLORKEY_SET;
+
+#define VBOXVHWACMD_SURF_OVERLAY_UPDATE_F_SRCMEMRECT 0x00000001
+#define VBOXVHWACMD_SURF_OVERLAY_UPDATE_F_DSTMEMRECT 0x00000002
+
+typedef struct VBOXVHWACMD_SURF_OVERLAY_UPDATE
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hDstSurf;
+            uint64_t offDstSurface;
+            VBOXVHWA_RECTL dstRect;
+            VBOXVHWA_SURFHANDLE hSrcSurf;
+            uint64_t offSrcSurface;
+            VBOXVHWA_RECTL srcRect;
+            uint32_t flags;
+            uint32_t xFlags;
+            VBOXVHWA_OVERLAYFX desc;
+            VBOXVHWA_RECTL xUpdatedSrcMemRect;
+            VBOXVHWA_RECTL xUpdatedDstMemRect;
+        } in;
+    } u;
+}VBOXVHWACMD_SURF_OVERLAY_UPDATE;
+
+typedef struct VBOXVHWACMD_SURF_OVERLAY_SETPOSITION
+{
+    union
+    {
+        struct
+        {
+            VBOXVHWA_SURFHANDLE hDstSurf;
+            uint64_t offDstSurface;
+            VBOXVHWA_SURFHANDLE hSrcSurf;
+            uint64_t offSrcSurface;
+            uint32_t xPos;
+            uint32_t yPos;
+            uint32_t flags;
+            uint32_t reserved;
+        } in;
+    } u;
+} VBOXVHWACMD_SURF_OVERLAY_SETPOSITION;
+
+typedef struct VBOXVHWACMD_HH_CONSTRUCT
+{
+    void    *pVM;
+    /* VRAM info for the backend to be able to properly translate VRAM offsets */
+    void    *pvVRAM;
+    uint32_t cbVRAM;
+} VBOXVHWACMD_HH_CONSTRUCT;
+
+typedef struct VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM
+{
+    struct SSMHANDLE * pSSM;
+} VBOXVHWACMD_HH_SAVESTATE_SAVEPERFORM;
+
+typedef struct VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM
+{
+    struct SSMHANDLE * pSSM;
+} VBOXVHWACMD_HH_SAVESTATE_LOADPERFORM;
+
+typedef DECLCALLBACKTYPE(void, FNVBOXVHWA_HH_CALLBACK,(void *));
+typedef FNVBOXVHWA_HH_CALLBACK *PFNVBOXVHWA_HH_CALLBACK;
+
+#define VBOXVHWA_HH_CALLBACK_SET(_pCmd, _pfn, _parg) \
+    do { \
+        (_pCmd)->GuestVBVAReserved1 = (uint64_t)(uintptr_t)(_pfn); \
+        (_pCmd)->GuestVBVAReserved2 = (uint64_t)(uintptr_t)(_parg); \
+    }while(0)
+
+#define VBOXVHWA_HH_CALLBACK_GET(_pCmd) ((PFNVBOXVHWA_HH_CALLBACK)(_pCmd)->GuestVBVAReserved1)
+#define VBOXVHWA_HH_CALLBACK_GET_ARG(_pCmd) ((void*)(_pCmd)->GuestVBVAReserved2)
+
+#pragma pack()
+#endif /* #ifdef VBOX_WITH_VIDEOHWACCEL */
+
+/* All structures are without alignment. */
+#pragma pack(1)
+
+typedef struct VBVAHOSTFLAGS
+{
+    uint32_t u32HostEvents;
+    uint32_t u32SupportedOrders;
+} VBVAHOSTFLAGS;
+
+typedef struct VBVABUFFER
+{
+    VBVAHOSTFLAGS hostFlags;
+
+    /* The offset where the data start in the buffer. */
+    uint32_t off32Data;
+    /* The offset where next data must be placed in the buffer. */
+    uint32_t off32Free;
+
+    /* The queue of record descriptions. */
+    VBVARECORD aRecords[VBVA_MAX_RECORDS];
+    uint32_t indexRecordFirst;
+    uint32_t indexRecordFree;
+
+    /* Space to leave free in the buffer when large partial records are transferred. */
+    uint32_t cbPartialWriteThreshold;
+
+    uint32_t cbData;
+    uint8_t  au8Data[1]; /* variable size for the rest of the VBVABUFFER area in VRAM. */
+} VBVABUFFER;
+
+#define VBVA_MAX_RECORD_SIZE (128*_1M)
+
+/* guest->host commands */
+#define VBVA_QUERY_CONF32 1
+#define VBVA_SET_CONF32   2
+#define VBVA_INFO_VIEW    3
+#define VBVA_INFO_HEAP    4
+#define VBVA_FLUSH        5
+#define VBVA_INFO_SCREEN  6
+/** Enables or disables VBVA.  Enabling VBVA without disabling it before
+ * causes a complete screen update. */
+#define VBVA_ENABLE       7
+#define VBVA_MOUSE_POINTER_SHAPE 8
+#ifdef VBOX_WITH_VIDEOHWACCEL
+# define VBVA_VHWA_CMD    9
+#endif /* # ifdef VBOX_WITH_VIDEOHWACCEL */
+#ifdef VBOX_WITH_VDMA
+# define VBVA_VDMA_CTL   10 /* setup G<->H DMA channel info */
+# define VBVA_VDMA_CMD    11 /* G->H DMA command             */
+#endif
+#define VBVA_INFO_CAPS   12 /* informs host about HGSMI caps. see VBVACAPS below */
+#define VBVA_SCANLINE_CFG    13 /* configures scanline, see VBVASCANLINECFG below */
+#define VBVA_SCANLINE_INFO   14 /* requests scanline info, see VBVASCANLINEINFO below */
+#define VBVA_CMDVBVA_SUBMIT  16 /* inform host about VBVA Command submission */
+#define VBVA_CMDVBVA_FLUSH   17 /* inform host about VBVA Command submission */
+#define VBVA_CMDVBVA_CTL     18 /* G->H DMA command             */
+#define VBVA_QUERY_MODE_HINTS 19 /* Query most recent mode hints sent. */
+/** Report the guest virtual desktop position and size for mapping host and
+ * guest pointer positions. */
+#define VBVA_REPORT_INPUT_MAPPING 20
+/** Report the guest cursor position and query the host position. */
+#define VBVA_CURSOR_POSITION 21
+
+/* host->guest commands */
+#define VBVAHG_EVENT              1
+#define VBVAHG_DISPLAY_CUSTOM     2
+#ifdef VBOX_WITH_VDMA
+#define VBVAHG_SHGSMI_COMPLETION  3
+#endif
+
+#ifdef VBOX_WITH_VIDEOHWACCEL
+#define VBVAHG_DCUSTOM_VHWA_CMDCOMPLETE 1
+#pragma pack(1)
+typedef struct VBVAHOSTCMDVHWACMDCOMPLETE
+{
+    uint32_t offCmd;
+}VBVAHOSTCMDVHWACMDCOMPLETE;
+#pragma pack()
+#endif /* # ifdef VBOX_WITH_VIDEOHWACCEL */
+
+#pragma pack(1)
+typedef enum
+{
+    VBVAHOSTCMD_OP_EVENT = 1,
+    VBVAHOSTCMD_OP_CUSTOM
+}VBVAHOSTCMD_OP_TYPE;
+
+typedef struct VBVAHOSTCMDEVENT
+{
+    uint64_t pEvent;
+}VBVAHOSTCMDEVENT;
+
+
+typedef struct VBVAHOSTCMD
+{
+    /* destination ID if >=0 specifies display index, otherwize the command is directed to the miniport */
+    int32_t iDstID;
+    int32_t customOpCode;
+    union
+    {
+        struct VBVAHOSTCMD *pNext;
+        uint32_t             offNext;
+        uint64_t Data; /* the body is 64-bit aligned */
+    } u;
+    char body[1];
+} VBVAHOSTCMD;
+
+#define VBVAHOSTCMD_SIZE(a_cb)                  (sizeof(VBVAHOSTCMD) + (a_cb))
+#define VBVAHOSTCMD_BODY(a_pCmd, a_TypeBody)    ((a_TypeBody RT_UNTRUSTED_VOLATILE_HSTGST *)&(a_pCmd)->body[0])
+#define VBVAHOSTCMD_HDR(a_pBody) \
+    ( (VBVAHOSTCMD RT_UNTRUSTED_VOLATILE_HSTGST *)( (uint8_t *)(a_pBody) - RT_OFFSETOF(VBVAHOSTCMD, body)) )
+#define VBVAHOSTCMD_HDRSIZE                     (RT_OFFSETOF(VBVAHOSTCMD, body))
+
+#pragma pack()
+
+/* VBVACONF32::u32Index */
+#define VBOX_VBVA_CONF32_MONITOR_COUNT  0
+#define VBOX_VBVA_CONF32_HOST_HEAP_SIZE 1
+/** Returns VINF_SUCCESS if the host can report mode hints via VBVA.
+ * Set value to VERR_NOT_SUPPORTED before calling. */
+#define VBOX_VBVA_CONF32_MODE_HINT_REPORTING  2
+/** Returns VINF_SUCCESS if the host can report guest cursor enabled status via
+ * VBVA.  Set value to VERR_NOT_SUPPORTED before calling. */
+#define VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING  3
+/** Returns the currently available host cursor capabilities.  Available if
+ * VBVACONF32::VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING returns success.
+ * @see VMMDevReqMouseStatus::mouseFeatures. */
+#define VBOX_VBVA_CONF32_CURSOR_CAPABILITIES  4
+/** Returns the supported flags in VBVAINFOSCREEN::u8Flags. */
+#define VBOX_VBVA_CONF32_SCREEN_FLAGS 5
+/** Returns the max size of VBVA record. */
+#define VBOX_VBVA_CONF32_MAX_RECORD_SIZE 6
+
+typedef struct VBVACONF32
+{
+    uint32_t u32Index;
+    uint32_t u32Value;
+} VBVACONF32;
+
+/** Reserved for historical reasons. */
+#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED0  RT_BIT(0)
+/** Guest cursor capability: can the host show a hardware cursor at the host
+ * pointer location? */
+#define VBOX_VBVA_CURSOR_CAPABILITY_HARDWARE   RT_BIT(1)
+/** Reserved for historical reasons. */
+#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED2  RT_BIT(2)
+/** Reserved for historical reasons.  Must always be unset. */
+#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED3  RT_BIT(3)
+/** Reserved for historical reasons. */
+#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED4  RT_BIT(4)
+/** Reserved for historical reasons. */
+#define VBOX_VBVA_CURSOR_CAPABILITY_RESERVED5  RT_BIT(5)
+
+typedef struct VBVAINFOVIEW
+{
+    /* Index of the screen, assigned by the guest. */
+    uint32_t u32ViewIndex;
+
+    /* The screen offset in VRAM, the framebuffer starts here. */
+    uint32_t u32ViewOffset;
+
+    /* The size of the VRAM memory that can be used for the view. */
+    uint32_t u32ViewSize;
+
+    /* The recommended maximum size of the VRAM memory for the screen. */
+    uint32_t u32MaxScreenSize;
+} VBVAINFOVIEW;
+
+typedef struct VBVAINFOHEAP
+{
+    /* Absolute offset in VRAM of the start of the heap. */
+    uint32_t u32HeapOffset;
+
+    /* The size of the heap. */
+    uint32_t u32HeapSize;
+
+} VBVAINFOHEAP;
+
+typedef struct VBVAFLUSH
+{
+    uint32_t u32Reserved;
+
+} VBVAFLUSH;
+
+typedef struct VBVACMDVBVASUBMIT
+{
+    uint32_t u32Reserved;
+} VBVACMDVBVASUBMIT;
+
+/* flush is requested because due to guest command buffer overflow */
+#define VBVACMDVBVAFLUSH_F_GUEST_BUFFER_OVERFLOW 1
+
+typedef struct VBVACMDVBVAFLUSH
+{
+    uint32_t u32Flags;
+} VBVACMDVBVAFLUSH;
+
+
+/* VBVAINFOSCREEN::u8Flags */
+#define VBVA_SCREEN_F_NONE     0x0000
+#define VBVA_SCREEN_F_ACTIVE   0x0001
+/** The virtual monitor has been disabled by the guest and should be removed
+ * by the host and ignored for purposes of pointer position calculation. */
+#define VBVA_SCREEN_F_DISABLED 0x0002
+/** The virtual monitor has been blanked by the guest and should be blacked
+ * out by the host using width, height, etc values from the VBVAINFOSCREEN request. */
+#define VBVA_SCREEN_F_BLANK    0x0004
+/** The virtual monitor has been blanked by the guest and should be blacked
+ * out by the host using the previous mode values for width. height, etc. */
+#define VBVA_SCREEN_F_BLANK2   0x0008
+
+typedef struct VBVAINFOSCREEN
+{
+    /* Which view contains the screen. */
+    uint32_t u32ViewIndex;
+
+    /* Physical X origin relative to the primary screen. */
+    int32_t i32OriginX;
+
+    /* Physical Y origin relative to the primary screen. */
+    int32_t i32OriginY;
+
+    /* Offset of visible framebuffer relative to the framebuffer start. */
+    uint32_t u32StartOffset;
+
+    /* The scan line size in bytes. */
+    uint32_t u32LineSize;
+
+    /* Width of the screen. */
+    uint32_t u32Width;
+
+    /* Height of the screen. */
+    uint32_t u32Height;
+
+    /* Color depth. */
+    uint16_t u16BitsPerPixel;
+
+    /* VBVA_SCREEN_F_* */
+    uint16_t u16Flags;
+} VBVAINFOSCREEN;
+
+
+/* VBVAENABLE::u32Flags */
+#define VBVA_F_NONE    0x00000000
+#define VBVA_F_ENABLE  0x00000001
+#define VBVA_F_DISABLE 0x00000002
+/* extended VBVA to be used with WDDM */
+#define VBVA_F_EXTENDED 0x00000004
+/* vbva offset is absolute VRAM offset */
+#define VBVA_F_ABSOFFSET 0x00000008
+
+typedef struct VBVAENABLE
+{
+    uint32_t u32Flags;
+    uint32_t u32Offset;
+    int32_t  i32Result;
+} VBVAENABLE;
+
+typedef struct VBVAENABLE_EX
+{
+    VBVAENABLE Base;
+    uint32_t u32ScreenId;
+} VBVAENABLE_EX;
+
+
+typedef struct VBVAMOUSEPOINTERSHAPE
+{
+    /* The host result. */
+    int32_t i32Result;
+
+    /* VBOX_MOUSE_POINTER_* bit flags. */
+    uint32_t fu32Flags;
+
+    /* X coordinate of the hot spot. */
+    uint32_t u32HotX;
+
+    /* Y coordinate of the hot spot. */
+    uint32_t u32HotY;
+
+    /* Width of the pointer in pixels. */
+    uint32_t u32Width;
+
+    /* Height of the pointer in scanlines. */
+    uint32_t u32Height;
+
+    /* Pointer data.
+     *
+     ****
+     * The data consists of 1 bpp AND mask followed by 32 bpp XOR (color) mask.
+     *
+     * For pointers without alpha channel the XOR mask pixels are 32 bit values: (lsb)BGR0(msb).
+     * For pointers with alpha channel the XOR mask consists of (lsb)BGRA(msb) 32 bit values.
+     *
+     * Guest driver must create the AND mask for pointers with alpha channel, so if host does not
+     * support alpha, the pointer could be displayed as a normal color pointer. The AND mask can
+     * be constructed from alpha values. For example alpha value >= 0xf0 means bit 0 in the AND mask.
+     *
+     * The AND mask is 1 bpp bitmap with byte aligned scanlines. Size of AND mask,
+     * therefore, is cbAnd = (width + 7) / 8 * height. The padding bits at the
+     * end of any scanline are undefined.
+     *
+     * The XOR mask follows the AND mask on the next 4 bytes aligned offset:
+     * uint8_t *pXor = pAnd + (cbAnd + 3) & ~3
+     * Bytes in the gap between the AND and the XOR mask are undefined.
+     * XOR mask scanlines have no gap between them and size of XOR mask is:
+     * cXor = width * 4 * height.
+     ****
+     *
+     * Preallocate 4 bytes for accessing actual data as p->au8Data.
+     */
+    uint8_t au8Data[4];
+
+} VBVAMOUSEPOINTERSHAPE;
+
+/** @name VBVAMOUSEPOINTERSHAPE::fu32Flags
+ * @note The VBOX_MOUSE_POINTER_* flags are used in the guest video driver,
+ *       values must be <= 0x8000 and must not be changed. (try make more sense
+ *       of this, please).
+ * @{
+ */
+/** pointer is visible */
+#define VBOX_MOUSE_POINTER_VISIBLE (0x0001)
+/** pointer has alpha channel */
+#define VBOX_MOUSE_POINTER_ALPHA   (0x0002)
+/** pointerData contains new pointer shape */
+#define VBOX_MOUSE_POINTER_SHAPE   (0x0004)
+/** @} */
+
+/* the guest driver can handle asynch guest cmd completion by reading the command offset from io port */
+#define VBVACAPS_COMPLETEGCMD_BY_IOREAD 0x00000001
+/* the guest driver can handle video adapter IRQs */
+#define VBVACAPS_IRQ                    0x00000002
+/** The guest can read video mode hints sent via VBVA. */
+#define VBVACAPS_VIDEO_MODE_HINTS       0x00000004
+/** The guest can switch to a software cursor on demand. */
+#define VBVACAPS_DISABLE_CURSOR_INTEGRATION 0x00000008
+/** The guest does not depend on host handling the VBE registers. */
+#define VBVACAPS_USE_VBVA_ONLY 0x00000010
+typedef struct VBVACAPS
+{
+    int32_t rc;
+    uint32_t fCaps;
+} VBVACAPS;
+
+/* makes graphics device generate IRQ on VSYNC */
+#define VBVASCANLINECFG_ENABLE_VSYNC_IRQ        0x00000001
+/* guest driver may request the current scanline */
+#define VBVASCANLINECFG_ENABLE_SCANLINE_INFO    0x00000002
+/* request the current refresh period, returned in u32RefreshPeriodMs */
+#define VBVASCANLINECFG_QUERY_REFRESH_PERIOD    0x00000004
+/* set new refresh period specified in u32RefreshPeriodMs.
+ * if used with VBVASCANLINECFG_QUERY_REFRESH_PERIOD,
+ * u32RefreshPeriodMs is set to the previous refresh period on return */
+#define VBVASCANLINECFG_SET_REFRESH_PERIOD      0x00000008
+
+typedef struct VBVASCANLINECFG
+{
+    int32_t rc;
+    uint32_t fFlags;
+    uint32_t u32RefreshPeriodMs;
+    uint32_t u32Reserved;
+} VBVASCANLINECFG;
+
+typedef struct VBVASCANLINEINFO
+{
+    int32_t rc;
+    uint32_t u32ScreenId;
+    uint32_t u32InVBlank;
+    uint32_t u32ScanLine;
+} VBVASCANLINEINFO;
+
+/** Query the most recent mode hints received from the host. */
+typedef struct VBVAQUERYMODEHINTS
+{
+    /** The maximum number of screens to return hints for. */
+    uint16_t cHintsQueried;
+    /** The size of the mode hint structures directly following this one. */
+    uint16_t cbHintStructureGuest;
+    /** The return code for the operation.  Initialise to VERR_NOT_SUPPORTED. */
+    int32_t  rc;
+} VBVAQUERYMODEHINTS;
+
+/** Structure in which a mode hint is returned.  The guest allocates an array
+ *  of these immediately after the VBVAQUERYMODEHINTS structure.  To accomodate
+ *  future extensions, the VBVAQUERYMODEHINTS structure specifies the size of
+ *  the VBVAMODEHINT structures allocated by the guest, and the host only fills
+ *  out structure elements which fit into that size.  The host should fill any
+ *  unused members (e.g. dx, dy) or structure space on the end with ~0.  The
+ *  whole structure can legally be set to ~0 to skip a screen. */
+typedef struct VBVAMODEHINT
+{
+    uint32_t magic;
+    uint32_t cx;
+    uint32_t cy;
+    uint32_t cBPP;  /* Which has never been used... */
+    uint32_t cDisplay;
+    uint32_t dx;  /**< X offset into the virtual frame-buffer. */
+    uint32_t dy;  /**< Y offset into the virtual frame-buffer. */
+    uint32_t fEnabled;  /* Not fFlags.  Add new members for new flags. */
+} VBVAMODEHINT;
+
+#define VBVAMODEHINT_MAGIC UINT32_C(0x0801add9)
+
+/** Report the rectangle relative to which absolute pointer events should be
+ *  expressed.  This information remains valid until the next VBVA resize event
+ *  for any screen, at which time it is reset to the bounding rectangle of all
+ *  virtual screens and must be re-set.
+ *  @see VBVA_REPORT_INPUT_MAPPING. */
+typedef struct VBVAREPORTINPUTMAPPING
+{
+    int32_t x;    /**< Upper left X co-ordinate relative to the first screen. */
+    int32_t y;    /**< Upper left Y co-ordinate relative to the first screen. */
+    uint32_t cx;  /**< Rectangle width. */
+    uint32_t cy;  /**< Rectangle height. */
+} VBVAREPORTINPUTMAPPING;
+
+/** Report the guest cursor position and query the host one.  The host may wish
+ *  to use the guest information to re-position its own cursor, particularly
+ *  when the cursor is captured and the guest does not support switching to a
+ *  software cursor.  After every mode switch the guest must signal that it
+ *  supports sending position information by sending an event with
+ *  @a fReportPosition set to false.
+ *  @see VBVA_CURSOR_POSITION */
+typedef struct VBVACURSORPOSITION
+{
+    uint32_t fReportPosition;  /**< Are we reporting a position? */
+    uint32_t x;                /**< Guest cursor X position */
+    uint32_t y;                /**< Guest cursor Y position */
+} VBVACURSORPOSITION;
+
+#pragma pack()
+
+typedef uint64_t VBOXVIDEOOFFSET;
+
+#define VBOXVIDEOOFFSET_VOID ((VBOXVIDEOOFFSET)~0)
+
+#pragma pack(1)
+
+/*
+ * VBOXSHGSMI made on top HGSMI and allows receiving notifications
+ * about G->H command completion
+ */
+/* SHGSMI command header */
+typedef struct VBOXSHGSMIHEADER
+{
+    uint64_t pvNext;    /*<- completion processing queue */
+    uint32_t fFlags;    /*<- see VBOXSHGSMI_FLAG_XXX Flags */
+    uint32_t cRefs;     /*<- command referece count */
+    uint64_t u64Info1;  /*<- contents depends on the fFlags value */
+    uint64_t u64Info2;  /*<- contents depends on the fFlags value */
+} VBOXSHGSMIHEADER, *PVBOXSHGSMIHEADER;
+
+typedef enum
+{
+    VBOXVDMACMD_TYPE_UNDEFINED         = 0,
+    VBOXVDMACMD_TYPE_DMA_PRESENT_BLT   = 1,
+    VBOXVDMACMD_TYPE_DMA_BPB_TRANSFER,
+    VBOXVDMACMD_TYPE_DMA_BPB_FILL,
+    VBOXVDMACMD_TYPE_DMA_PRESENT_SHADOW2PRIMARY,
+    VBOXVDMACMD_TYPE_DMA_PRESENT_CLRFILL,
+    VBOXVDMACMD_TYPE_DMA_PRESENT_FLIP,
+    VBOXVDMACMD_TYPE_DMA_NOP,
+    VBOXVDMACMD_TYPE_CHROMIUM_CMD, /* chromium cmd */
+    VBOXVDMACMD_TYPE_DMA_BPB_TRANSFER_VRAMSYS,
+    VBOXVDMACMD_TYPE_CHILD_STATUS_IRQ /* make the device notify child (monitor) state change IRQ */
+} VBOXVDMACMD_TYPE;
+
+#pragma pack()
+
+/* the command processing was asynch, set by the host to indicate asynch command completion
+ * must not be cleared once set, the command completion is performed by issuing a host->guest completion command
+ * while keeping this flag unchanged */
+#define VBOXSHGSMI_FLAG_HG_ASYNCH               0x00010000
+#if 0
+/* if set     - asynch completion is performed by issuing the event,
+ * if cleared - asynch completion is performed by calling a callback */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_EVENT         0x00000001
+#endif
+/* issue interrupt on asynch completion, used for critical G->H commands,
+ * i.e. for completion of which guest is waiting. */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ           0x00000002
+/* guest does not do any op on completion of this command,
+ * the host may copy the command and indicate that it does not need the command anymore
+ * by not setting VBOXSHGSMI_FLAG_HG_ASYNCH */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_NOCOMPLETION  0x00000004
+/* guest requires the command to be processed asynchronously,
+ * not setting VBOXSHGSMI_FLAG_HG_ASYNCH by the host in this case is treated as command failure */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_FORCE         0x00000008
+/* force IRQ on cmd completion */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_IRQ_FORCE     0x00000010
+/* an IRQ-level callback is associated with the command */
+#define VBOXSHGSMI_FLAG_GH_ASYNCH_CALLBACK_IRQ  0x00000020
+/* guest expects this command to be completed synchronously */
+#define VBOXSHGSMI_FLAG_GH_SYNCH                0x00000040
+
+
+DECLINLINE(uint8_t RT_UNTRUSTED_VOLATILE_GUEST *)
+VBoxSHGSMIBufferData(const VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *pHeader)
+{
+    return (uint8_t RT_UNTRUSTED_VOLATILE_GUEST *)pHeader + sizeof(VBOXSHGSMIHEADER);
+}
+
+#define VBoxSHGSMIBufferHeaderSize() (sizeof(VBOXSHGSMIHEADER))
+
+DECLINLINE(VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *) VBoxSHGSMIBufferHeader(const void RT_UNTRUSTED_VOLATILE_GUEST *pvData)
+{
+    return (VBOXSHGSMIHEADER RT_UNTRUSTED_VOLATILE_GUEST *)((uintptr_t)pvData - sizeof(VBOXSHGSMIHEADER));
+}
+
+#ifdef VBOX_WITH_VDMA
+# pragma pack(1)
+
+/* VDMA - Video DMA */
+
+/* VDMA Control API */
+/* VBOXVDMA_CTL::u32Flags */
+typedef enum
+{
+    VBOXVDMA_CTL_TYPE_NONE = 0,
+    VBOXVDMA_CTL_TYPE_ENABLE,
+    VBOXVDMA_CTL_TYPE_DISABLE,
+    VBOXVDMA_CTL_TYPE_FLUSH,
+    VBOXVDMA_CTL_TYPE_WATCHDOG,
+    VBOXVDMA_CTL_TYPE_END
+} VBOXVDMA_CTL_TYPE;
+
+typedef struct VBOXVDMA_CTL
+{
+    VBOXVDMA_CTL_TYPE enmCtl;
+    uint32_t u32Offset;
+    int32_t  i32Result;
+} VBOXVDMA_CTL;
+
+/* VBOXVDMACBUF_DR::phBuf specifies offset in VRAM */
+#define VBOXVDMACBUF_FLAG_BUF_VRAM_OFFSET 0x00000001
+/* command buffer follows the VBOXVDMACBUF_DR in VRAM, VBOXVDMACBUF_DR::phBuf is ignored */
+#define VBOXVDMACBUF_FLAG_BUF_FOLLOWS_DR  0x00000002
+
+/**
+ * We can not submit the DMA command via VRAM since we do not have control over
+ * DMA command buffer [de]allocation, i.e. we only control the buffer contents.
+ * In other words the system may call one of our callbacks to fill a command buffer
+ * with the necessary commands and then discard the buffer w/o any notification.
+ *
+ * We have only DMA command buffer physical address at submission time.
+ *
+ * so the only way is to */
+typedef struct VBOXVDMACBUF_DR
+{
+    uint16_t fFlags;
+    uint16_t cbBuf;
+    /* RT_SUCCESS()     - on success
+     * VERR_INTERRUPTED - on preemption
+     * VERR_xxx         - on error */
+    int32_t  rc;
+    union
+    {
+        uint64_t phBuf;
+        VBOXVIDEOOFFSET offVramBuf;
+    } Location;
+    uint64_t aGuestData[7];
+} VBOXVDMACBUF_DR, *PVBOXVDMACBUF_DR;
+
+#define VBOXVDMACBUF_DR_TAIL(a_pCmd, a_TailType)       \
+    ( (a_TailType      RT_UNTRUSTED_VOLATILE_HSTGST *)( ((uint8_t*)(a_pCmd)) + sizeof(VBOXVDMACBUF_DR)) )
+#define VBOXVDMACBUF_DR_FROM_TAIL(a_pCmd) \
+    ( (VBOXVDMACBUF_DR RT_UNTRUSTED_VOLATILE_HSTGST *)( ((uint8_t*)(a_pCmd)) - sizeof(VBOXVDMACBUF_DR)) )
+
+typedef struct VBOXVDMACMD
+{
+    VBOXVDMACMD_TYPE enmType;
+    uint32_t u32CmdSpecific;
+} VBOXVDMACMD;
+
+#define VBOXVDMACMD_HEADER_SIZE()                   sizeof(VBOXVDMACMD)
+#define VBOXVDMACMD_SIZE_FROMBODYSIZE(_s)           ((uint32_t)(VBOXVDMACMD_HEADER_SIZE() + (_s)))
+#define VBOXVDMACMD_SIZE(_t)                        (VBOXVDMACMD_SIZE_FROMBODYSIZE(sizeof(_t)))
+#define VBOXVDMACMD_BODY(a_pCmd, a_TypeBody)        \
+    ( (a_TypeBody RT_UNTRUSTED_VOLATILE_HSTGST  *)( ((uint8_t *)(a_pCmd)) + VBOXVDMACMD_HEADER_SIZE()) )
+#define VBOXVDMACMD_BODY_SIZE(_s)                   ( (_s) - VBOXVDMACMD_HEADER_SIZE() )
+#define VBOXVDMACMD_FROM_BODY(a_pBody)                \
+    ( (VBOXVDMACMD RT_UNTRUSTED_VOLATILE_HSTGST *)( ((uint8_t *)(a_pBody)) - VBOXVDMACMD_HEADER_SIZE()) )
+#define VBOXVDMACMD_BODY_FIELD_OFFSET(_ot, _t, _f)  ( (_ot)(uintptr_t)( VBOXVDMACMD_BODY(0, uint8_t) + RT_UOFFSETOF_DYN(_t, _f) ) )
+
+# pragma pack()
+#endif /* #ifdef VBOX_WITH_VDMA */
+
+
+#define VBOXVDMA_CHILD_STATUS_F_CONNECTED    0x01
+#define VBOXVDMA_CHILD_STATUS_F_DISCONNECTED 0x02
+#define VBOXVDMA_CHILD_STATUS_F_ROTATED      0x04
+
+typedef struct VBOXVDMA_CHILD_STATUS
+{
+    uint32_t iChild;
+    uint8_t  fFlags;
+    uint8_t  u8RotationAngle;
+    uint16_t u16Reserved;
+} VBOXVDMA_CHILD_STATUS, *PVBOXVDMA_CHILD_STATUS;
+
+/* apply the aInfos are applied to all targets, the iTarget is ignored */
+#define VBOXVDMACMD_CHILD_STATUS_IRQ_F_APPLY_TO_ALL 0x00000001
+
+typedef struct VBOXVDMACMD_CHILD_STATUS_IRQ
+{
+    uint32_t cInfos;
+    uint32_t fFlags;
+    VBOXVDMA_CHILD_STATUS aInfos[1];
+} VBOXVDMACMD_CHILD_STATUS_IRQ, *PVBOXVDMACMD_CHILD_STATUS_IRQ;
+
+#define VBOXCMDVBVA_SCREENMAP_SIZE(_elType) ((VBOX_VIDEO_MAX_SCREENS + sizeof (_elType) - 1) / sizeof (_elType))
+#define VBOXCMDVBVA_SCREENMAP_DECL(_elType, _name) _elType _name[VBOXCMDVBVA_SCREENMAP_SIZE(_elType)]
+
+#endif /* !VBOX_INCLUDED_Graphics_VBoxVideo_h */
+