int HGSMIHeapSetup (HGSMIHEAP *pHeap,
void *pvBase,
HGSMISIZE cbArea,
HGSMIOFFSET offBase,
bool fOffsetBased)
{
if ( !pHeap
|| !pvBase)
{
return VERR_INVALID_PARAMETER;
}
int rc = HGSMIAreaInitialize (&pHeap->area, pvBase, cbArea, offBase);
if (RT_SUCCESS (rc))
{
if (!fOffsetBased)
rc = RTHeapSimpleInit (&pHeap->u.hPtr, pvBase, cbArea);
else
rc = RTHeapOffsetInit (&pHeap->u.hOff, pvBase, cbArea);
if (RT_SUCCESS (rc))
{
pHeap->cRefs = 0;
pHeap->fOffsetBased = fOffsetBased;
}
else
{
HGSMIAreaClear (&pHeap->area);
}
}
return rc;
}
/**
* Initialise the host context structure.
*
* @param pCtx the context structure to initialise
* @param pvBaseMapping where the basic HGSMI structures are mapped at
* @param offHostFlags the offset of the host flags into the basic HGSMI
* structures
* @param pvHostAreaMapping where the area for the host heap is mapped at
* @param offVRAMHostArea offset of the host heap area into VRAM
* @param cbHostArea size in bytes of the host heap area
*/
RTDECL(void) VBoxHGSMISetupHostContext(PHGSMIHOSTCOMMANDCONTEXT pCtx,
void *pvBaseMapping,
uint32_t offHostFlags,
void *pvHostAreaMapping,
uint32_t offVRAMHostArea,
uint32_t cbHostArea)
{
uint8_t *pu8HostFlags = ((uint8_t *)pvBaseMapping) + offHostFlags;
pCtx->pfHostFlags = (HGSMIHOSTFLAGS *)pu8HostFlags;
/** @todo should we really be using a fixed ISA port value here? */
pCtx->port = (RTIOPORT)VGA_PORT_HGSMI_HOST;
HGSMIAreaInitialize(&pCtx->areaCtx, pvHostAreaMapping, cbHostArea,
offVRAMHostArea);
}
int HGSMIHeapSetup(HGSMIHEAP *pHeap,
void *pvBase,
HGSMISIZE cbArea,
HGSMIOFFSET offBase,
const HGSMIENV *pEnv)
{
AssertPtrReturn(pHeap, VERR_INVALID_PARAMETER);
AssertPtrReturn(pvBase, VERR_INVALID_PARAMETER);
int rc = HGSMIAreaInitialize(&pHeap->area, pvBase, cbArea, offBase);
if (RT_SUCCESS(rc))
{
rc = HGSMIMAInit(&pHeap->ma, &pHeap->area, NULL, 0, 0, pEnv);
if (RT_FAILURE(rc))
{
HGSMIAreaClear(&pHeap->area);
}
}
return rc;
}
int HGSMIHeapRelocate (HGSMIHEAP *pHeap,
void *pvBase,
uint32_t offHeapHandle,
uintptr_t offDelta,
HGSMISIZE cbArea,
HGSMIOFFSET offBase,
bool fOffsetBased
)
{
if ( !pHeap
|| !pvBase)
{
return VERR_INVALID_PARAMETER;
}
int rc = HGSMIAreaInitialize (&pHeap->area, pvBase, cbArea, offBase);
if (RT_SUCCESS (rc))
{
if (fOffsetBased)
pHeap->u.hOff = (RTHEAPOFFSET)((uint8_t *)pvBase + offHeapHandle);
else
{
pHeap->u.hPtr = (RTHEAPSIMPLE)((uint8_t *)pvBase + offHeapHandle);
rc = RTHeapSimpleRelocate (pHeap->u.hPtr, offDelta); AssertRC(rc);
}
if (RT_SUCCESS (rc))
{
pHeap->cRefs = 0;
pHeap->fOffsetBased = fOffsetBased;
}
else
{
HGSMIAreaClear (&pHeap->area);
}
}
return rc;
}
/* Called for IOCTL_VIDEO_MAP_VIDEO_MEMORY.
* Maps FrameBuffer and video RAM to a caller's virtual adress space.
*/
BOOLEAN VBoxMPMapVideoMemory(PVBOXMP_DEVEXT pExt, PVIDEO_MEMORY pRequestedAddress,
PVIDEO_MEMORY_INFORMATION pMapInfo, PSTATUS_BLOCK pStatus)
{
PHYSICAL_ADDRESS framebuffer;
ULONG inIoSpace = 0;
LOGF(("framebuffer offset %#x", pExt->ulFrameBufferOffset));
framebuffer.QuadPart = VBoxCommonFromDeviceExt(pExt)->phVRAM.QuadPart + pExt->ulFrameBufferOffset;
pMapInfo->VideoRamBase = pRequestedAddress->RequestedVirtualAddress;
VBOXMPIOCTL_HIDE(pRequestedAddress);
pMapInfo->VideoRamLength = pExt->pPrimary->u.primary.ulMaxFrameBufferSize;
pStatus->Status = VideoPortMapMemory(pExt, framebuffer, &pMapInfo->VideoRamLength,
&inIoSpace, &pMapInfo->VideoRamBase);
if (NO_ERROR == pStatus->Status)
{
pMapInfo->FrameBufferBase = (PUCHAR)pMapInfo->VideoRamBase;
pMapInfo->FrameBufferLength =
VBoxMPXpdmCurrentVideoMode(pExt)->VisScreenHeight*
VBoxMPXpdmCurrentVideoMode(pExt)->ScreenStride;
pStatus->Information = sizeof(VIDEO_MEMORY_INFORMATION);
/* Save the new framebuffer size */
pExt->ulFrameBufferSize = pMapInfo->FrameBufferLength;
HGSMIAreaInitialize(&pExt->areaDisplay, pMapInfo->FrameBufferBase,
pMapInfo->FrameBufferLength, pExt->ulFrameBufferOffset);
}
VBOXMPIOCTL_UNHIDE();
LOGF_LEAVE();
return NO_ERROR == pStatus->Status;
}