/*
* Public hardware buffer methods.
*/
int vboxVbvaEnable (PVBOXMP_DEVEXT pDevExt, VBOXVBVAINFO *pVbva)
{
VBVABUFFER *pVBVA = pVbva->pVBVA;
// DISPDBG((1, "VBoxDisp::vboxVbvaEnable screen %p vbva off 0x%x\n", ppdev->pjScreen, ppdev->layout.offVBVABuffer));
pVBVA->hostFlags.u32HostEvents = 0;
pVBVA->hostFlags.u32SupportedOrders = 0;
pVBVA->off32Data = 0;
pVBVA->off32Free = 0;
RtlZeroMemory (pVBVA->aRecords, sizeof (pVBVA->aRecords));
pVBVA->indexRecordFirst = 0;
pVBVA->indexRecordFree = 0;
pVBVA->cbPartialWriteThreshold = 256;
pVBVA->cbData = pVbva->cbVBVA - sizeof (VBVABUFFER) + sizeof (pVBVA->au8Data);
pVbva->fHwBufferOverflow = FALSE;
pVbva->pRecord = NULL;
int rc = vboxVBVAInformHost (pDevExt, pVbva, TRUE);
AssertRC(rc);
if (!RT_SUCCESS(rc))
vboxVbvaDisable (pDevExt, pVbva);
return rc;
}
int vboxVbvaDisable (PVBOXMP_DEVEXT pDevExt, VBOXVBVAINFO *pVbva)
{
// DISPDBG((1, "VBoxDisp::vbvaDisable called.\n"));
pVbva->fHwBufferOverflow = FALSE;
pVbva->pRecord = NULL;
// ppdev->pVBVA = NULL;
return vboxVBVAInformHost (pDevExt, pVbva, FALSE);
}
RTDECL(void) VBoxVBVADisable(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx,
int32_t cScreen)
{
LogFlowFunc(("\n"));
pCtx->fHwBufferOverflow = false;
pCtx->pRecord = NULL;
pCtx->pVBVA = NULL;
vboxVBVAInformHost(pCtx, pHGSMICtx, cScreen, false);
return;
}
/*
* Public hardware buffer methods.
*/
RTDECL(bool) VBoxVBVAEnable(PVBVABUFFERCONTEXT pCtx,
PHGSMIGUESTCOMMANDCONTEXT pHGSMICtx,
VBVABUFFER *pVBVA, int32_t cScreen)
{
bool bRc = false;
LogFlowFunc(("pVBVA %p\n", pVBVA));
#if 0 /* All callers check this */
if (ppdev->bHGSMISupported)
#endif
{
LogFunc(("pVBVA %p vbva off 0x%x\n", pVBVA, pCtx->offVRAMBuffer));
pVBVA->hostFlags.u32HostEvents = 0;
pVBVA->hostFlags.u32SupportedOrders = 0;
pVBVA->off32Data = 0;
pVBVA->off32Free = 0;
memset(pVBVA->aRecords, 0, sizeof (pVBVA->aRecords));
pVBVA->indexRecordFirst = 0;
pVBVA->indexRecordFree = 0;
pVBVA->cbPartialWriteThreshold = 256;
pVBVA->cbData = pCtx->cbBuffer - sizeof (VBVABUFFER) + sizeof (pVBVA->au8Data);
pCtx->fHwBufferOverflow = false;
pCtx->pRecord = NULL;
pCtx->pVBVA = pVBVA;
bRc = vboxVBVAInformHost(pCtx, pHGSMICtx, cScreen, true);
}
if (!bRc)
{
VBoxVBVADisable(pCtx, pHGSMICtx, cScreen);
}
return bRc;
}
