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;
}
void HGSMIHeapDestroy (HGSMIHEAP *pHeap)
{
if (pHeap)
{
Assert(!pHeap->cRefs);
pHeap->u.hPtr = NIL_RTHEAPSIMPLE;
HGSMIAreaClear (&pHeap->area);
pHeap->cRefs = 0;
}
}
/* Called for IOCTL_VIDEO_UNMAP_VIDEO_MEMORY.
* Unmaps previously mapped FrameBuffer and video RAM from caller's virtual adress space.
*/
BOOLEAN VBoxMPUnmapVideoMemory(PVBOXMP_DEVEXT pExt, PVIDEO_MEMORY VideoMemory, PSTATUS_BLOCK pStatus)
{
LOGF_ENTER();
HGSMIAreaClear(&pExt->areaDisplay);
pStatus->Status = VideoPortUnmapMemory(pExt, VideoMemory->RequestedVirtualAddress, NULL);
LOGF_LEAVE();
return TRUE;
}
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;
}
