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/** @file
*
* VBox Host Guest Shared Memory Interface (HGSMI).
* OS-independent guest structures.
*/
/*
* Copyright (C) 2006-2011 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 __HGSMI_GUEST_h__
#define __HGSMI_GUEST_h__
#include <VBox/HGSMI/HGSMI.h>
#include <VBox/HGSMI/HGSMIChSetup.h>
#ifdef VBOX_XPDM_MINIPORT
RT_C_DECLS_BEGIN
# include "miniport.h"
# include "ntddvdeo.h"
# include <Video.h>
RT_C_DECLS_END
#else
# include <iprt/asm-amd64-x86.h>
#endif
#ifdef VBOX_WDDM_MINIPORT
# include "wddm/VBoxMPShgsmi.h"
typedef VBOXSHGSMI HGSMIGUESTCMDHEAP;
# define HGSMIGUESTCMDHEAP_GET(_p) (&(_p)->Heap)
#else
typedef HGSMIHEAP HGSMIGUESTCMDHEAP;
# define HGSMIGUESTCMDHEAP_GET(_p) (_p)
#endif
RT_C_DECLS_BEGIN
/**
* Structure grouping the context needed for submitting commands to the host
* via HGSMI
*/
typedef struct HGSMIGUESTCOMMANDCONTEXT
{
/** Information about the memory heap located in VRAM from which data
* structures to be sent to the host are allocated. */
HGSMIGUESTCMDHEAP heapCtx;
/** The I/O port used for submitting commands to the host by writing their
* offsets into the heap. */
RTIOPORT port;
} HGSMIGUESTCOMMANDCONTEXT, *PHGSMIGUESTCOMMANDCONTEXT;
/**
* Structure grouping the context needed for receiving commands from the host
* via HGSMI
*/
typedef struct HGSMIHOSTCOMMANDCONTEXT
{
/** Information about the memory area located in VRAM in which the host
* places data structures to be read by the guest. */
HGSMIAREA areaCtx;
/** Convenience structure used for matching host commands to handlers. */
/** @todo handlers are registered individually in code rather than just
* passing a static structure in order to gain extra flexibility. There is
* currently no expected usage case for this though. Is the additional
* complexity really justified? */
HGSMICHANNELINFO channels;
/** Flag to indicate that one thread is currently processing the command
* queue. */
volatile bool fHostCmdProcessing;
/* Pointer to the VRAM location where the HGSMI host flags are kept. */
volatile HGSMIHOSTFLAGS *pfHostFlags;
/** The I/O port used for receiving commands from the host as offsets into
* the memory area and sending back confirmations (command completion,
* IRQ acknowlegement). */
RTIOPORT port;
} HGSMIHOSTCOMMANDCONTEXT, *PHGSMIHOSTCOMMANDCONTEXT;
/**
* Structure grouping the context needed for sending graphics acceleration
* information to the host via VBVA. Each screen has its own VBVA buffer.
*/
typedef struct VBVABUFFERCONTEXT
{
/** Offset of the buffer in the VRAM section for the screen */
uint32_t offVRAMBuffer;
/** Length of the buffer in bytes */
uint32_t cbBuffer;
/** This flag is set if we wrote to the buffer faster than the host could
* read it. */
bool fHwBufferOverflow;
/** The VBVA record that we are currently preparing for the host, NULL if
* none. */
struct VBVARECORD *pRecord;
/** Pointer to the VBVA buffer mapped into the current address space. Will
* be NULL if VBVA is not enabled. */
struct VBVABUFFER *pVBVA;
} VBVABUFFERCONTEXT, *PVBVABUFFERCONTEXT;
/** @name Helper functions
* @{ */
/** Write an 8-bit value to an I/O port. */
DECLINLINE(void) VBoxVideoCmnPortWriteUchar(RTIOPORT Port, uint8_t Value)
{
#ifdef VBOX_XPDM_MINIPORT
VideoPortWritePortUchar((PUCHAR)Port, Value);
#else /** @todo make these explicit */
ASMOutU8(Port, Value);
#endif
}
/** Write a 16-bit value to an I/O port. */
DECLINLINE(void) VBoxVideoCmnPortWriteUshort(RTIOPORT Port, uint16_t Value)
{
#ifdef VBOX_XPDM_MINIPORT
VideoPortWritePortUshort((PUSHORT)Port,Value);
#else
ASMOutU16(Port, Value);
#endif
}
/** Write a 32-bit value to an I/O port. */
DECLINLINE(void) VBoxVideoCmnPortWriteUlong(RTIOPORT Port, uint32_t Value)
{
#ifdef VBOX_XPDM_MINIPORT
VideoPortWritePortUlong((PULONG)Port,Value);
#else
ASMOutU32(Port, Value);
#endif
}
/** Read an 8-bit value from an I/O port. */
DECLINLINE(uint8_t) VBoxVideoCmnPortReadUchar(RTIOPORT Port)
{
#ifdef VBOX_XPDM_MINIPORT
return VideoPortReadPortUchar((PUCHAR)Port);
#else
return ASMInU8(Port);
#endif
}
/** Read a 16-bit value from an I/O port. */
DECLINLINE(uint16_t) VBoxVideoCmnPortReadUshort(RTIOPORT Port)
{
#ifdef VBOX_XPDM_MINIPORT
return VideoPortReadPortUshort((PUSHORT)Port);
#else
return ASMInU16(Port);
#endif
}
/** Read a 32-bit value from an I/O port. */
DECLINLINE(uint32_t) VBoxVideoCmnPortReadUlong(RTIOPORT Port)
{
#ifdef VBOX_XPDM_MINIPORT
return VideoPortReadPortUlong((PULONG)Port);
#else
return ASMInU32(Port);
#endif
}
/** @} */
/** @name Base HGSMI APIs
* @{ */
/** Acknowlege an IRQ. */
DECLINLINE(void) VBoxHGSMIClearIrq(PHGSMIHOSTCOMMANDCONTEXT pCtx)
{
VBoxVideoCmnPortWriteUlong(pCtx->port, HGSMIOFFSET_VOID);
}
RTDECL(void) VBoxHGSMIHostCmdComplete(PHGSMIHOSTCOMMANDCONTEXT pCtx,
void *pvMem);
RTDECL(void) VBoxHGSMIProcessHostQueue(PHGSMIHOSTCOMMANDCONTEXT pCtx);
RTDECL(bool) VBoxHGSMIIsSupported(void);
RTDECL(void *) VBoxHGSMIBufferAlloc(PHGSMIGUESTCOMMANDCONTEXT pCtx,
HGSMISIZE cbData,
uint8_t u8Ch,
uint16_t u16Op);
RTDECL(void) VBoxHGSMIBufferFree(PHGSMIGUESTCOMMANDCONTEXT pCtx,
void *pvBuffer);
RTDECL(int) VBoxHGSMIBufferSubmit(PHGSMIGUESTCOMMANDCONTEXT pCtx,
void *pvBuffer);
RTDECL(void) VBoxHGSMIGetBaseMappingInfo(uint32_t cbVRAM,
uint32_t *poffVRAMBaseMapping,
uint32_t *pcbMapping,
uint32_t *poffGuestHeapMemory,
uint32_t *pcbGuestHeapMemory,
uint32_t *poffHostFlags);
/** @todo we should provide a cleanup function too as part of the API */
RTDECL(int) VBoxHGSMISetupGuestContext(PHGSMIGUESTCOMMANDCONTEXT pCtx,
void *pvGuestHeapMemory,
uint32_t cbGuestHeapMemory,
uint32_t offVRAMGuestHeapMemory);
RTDECL(void) VBoxHGSMIGetHostAreaMapping(PHGSMIGUESTCOMMANDCONTEXT pCtx,
uint32_t cbVRAM,
uint32_t offVRAMBaseMapping,
uint32_t *poffVRAMHostArea,
uint32_t *pcbHostArea);
RTDECL(void) VBoxHGSMISetupHostContext(PHGSMIHOSTCOMMANDCONTEXT pCtx,
void *pvBaseMapping,
uint32_t offHostFlags,
void *pvHostAreaMapping,
uint32_t offVRAMHostArea,
uint32_t cbHostArea);
RTDECL(int) VBoxHGSMISendHostCtxInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
HGSMIOFFSET offVRAMFlagsLocation,
uint32_t fCaps,
uint32_t offVRAMHostArea,
uint32_t cbHostArea);
RTDECL(int) VBoxQueryConfHGSMI(PHGSMIGUESTCOMMANDCONTEXT pCtx,
uint32_t u32Index, uint32_t *pulValue);
RTDECL(bool) VBoxHGSMIUpdatePointerShape(PHGSMIGUESTCOMMANDCONTEXT pCtx,
uint32_t fFlags,
uint32_t cHotX,
uint32_t cHotY,
uint32_t cWidth,
uint32_t cHeight,
uint8_t *pPixels,
uint32_t cbLength);
/** @} */
/** @name VBVA APIs
* @{ */
RTDECL(bool) VBoxVBVAEnable(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx,
struct VBVABUFFER *pVBVA, int32_t cScreen);
RTDECL(void) VBoxVBVADisable(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx,
int32_t cScreen);
RTDECL(bool) VBoxVBVABufferBeginUpdate(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx);
RTDECL(void) VBoxVBVABufferEndUpdate(PVBVABUFFERCONTEXT pCtx);
RTDECL(bool) VBoxVBVAWrite(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx,
const void *pv, uint32_t cb);
RTDECL(bool) VBoxVBVAOrderSupported(PVBVABUFFERCONTEXT pCtx, unsigned code);
RTDECL(void) VBoxVBVASetupBufferContext(PVBVABUFFERCONTEXT pCtx,
uint32_t offVRAMBuffer,
uint32_t cbBuffer);
/** @} */
/** @name Modesetting APIs
* @{ */
RTDECL(uint32_t) VBoxHGSMIGetMonitorCount(PHGSMIGUESTCOMMANDCONTEXT pCtx);
RTDECL(uint32_t) VBoxVideoGetVRAMSize(void);
RTDECL(bool) VBoxVideoAnyWidthAllowed(void);
struct VBVAINFOVIEW;
/**
* Callback funtion called from @a VBoxHGSMISendViewInfo to initialise
* the @a VBVAINFOVIEW structure for each screen.
*
* @returns iprt status code
* @param pvData context data for the callback, passed to @a
* VBoxHGSMISendViewInfo along with the callback
* @param pInfo array of @a VBVAINFOVIEW structures to be filled in
* @todo explicitly pass the array size
*/
typedef DECLCALLBACK(int) FNHGSMIFILLVIEWINFO(void *pvData,
struct VBVAINFOVIEW *pInfo,
uint32_t cViews);
/** Pointer to a FNHGSMIFILLVIEWINFO callback */
typedef FNHGSMIFILLVIEWINFO *PFNHGSMIFILLVIEWINFO;
RTDECL(int) VBoxHGSMISendViewInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
uint32_t u32Count,
PFNHGSMIFILLVIEWINFO pfnFill,
void *pvData);
RTDECL(void) VBoxVideoSetModeRegisters(uint16_t cWidth, uint16_t cHeight,
uint16_t cVirtWidth, uint16_t cBPP,
uint16_t fFlags,
uint16_t cx, uint16_t cy);
RTDECL(bool) VBoxVideoGetModeRegisters(uint16_t *pcWidth,
uint16_t *pcHeight,
uint16_t *pcVirtWidth,
uint16_t *pcBPP,
uint16_t *pfFlags);
RTDECL(void) VBoxVideoDisableVBE(void);
RTDECL(void) VBoxHGSMIProcessDisplayInfo(PHGSMIGUESTCOMMANDCONTEXT pCtx,
uint32_t cDisplay,
int32_t cOriginX,
int32_t cOriginY,
uint32_t offStart,
uint32_t cbPitch,
uint32_t cWidth,
uint32_t cHeight,
uint16_t cBPP,
uint16_t fFlags);
/** @} */
RT_C_DECLS_END
#endif /* __HGSMI_GUEST_h__*/
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