int IPU1dma()
{
int ipu1cycles = 0;
int totalqwc = 0;
//We need to make sure GIF has flushed before sending IPU data, it seems to REALLY screw FFX videos
if(!ipu1ch.chcr.STR || IPU1Status.DMAMode == 2)
{
//We MUST stop the IPU from trying to fill the FIFO with more data if the DMA has been suspended
//if we don't, we risk causing the data to go out of sync with the fifo and we end up losing some!
//This is true for Dragons Quest 8 and probably others which suspend the DMA.
DevCon.Warning("IPU1 running when IPU1 DMA disabled! CHCR %x QWC %x", ipu1ch.chcr._u32, ipu1ch.qwc);
return 0;
}
IPU_LOG("IPU1 DMA Called QWC %x Finished %d In Progress %d tadr %x", ipu1ch.qwc, IPU1Status.DMAFinished, IPU1Status.InProgress, ipu1ch.tadr);
switch(IPU1Status.DMAMode)
{
case DMA_MODE_NORMAL:
{
IPU_LOG("Processing Normal QWC left %x Finished %d In Progress %d", ipu1ch.qwc, IPU1Status.DMAFinished, IPU1Status.InProgress);
if(IPU1Status.InProgress) totalqwc += IPU1chain();
}
break;
case DMA_MODE_CHAIN:
{
if(IPU1Status.InProgress) //No transfer is ready to go so we need to set one up
{
IPU_LOG("Processing Chain QWC left %x Finished %d In Progress %d", ipu1ch.qwc, IPU1Status.DMAFinished, IPU1Status.InProgress);
totalqwc += IPU1chain();
}
if(!IPU1Status.InProgress && !IPU1Status.DMAFinished) //No transfer is ready to go so we need to set one up
{
tDMA_TAG* ptag = dmaGetAddr(ipu1ch.tadr, false); //Set memory pointer to TADR
if (!ipu1ch.transfer("IPU1", ptag))
{
return totalqwc;
}
ipu1ch.madr = ptag[1]._u32;
ipu1cycles += 1; // Add 1 cycles from the QW read for the tag
IPU1Status.ChainMode = ptag->ID;
if(ipu1ch.chcr.TTE) DevCon.Warning("TTE?");
IPU1Status.DMAFinished = hwDmacSrcChain(ipu1ch, ptag->ID);
if(ipu1ch.qwc > 0) IPU1Status.InProgress = true;
IPU_LOG("dmaIPU1 dmaChain %8.8x_%8.8x size=%d, addr=%lx, fifosize=%x",
ptag[1]._u32, ptag[0]._u32, ipu1ch.qwc, ipu1ch.madr, 8 - g_BP.IFC);
if (ipu1ch.chcr.TIE && ptag->IRQ) //Tag Interrupt is set, so schedule the end/interrupt
IPU1Status.DMAFinished = true;
IPU_LOG("Processing Start Chain QWC left %x Finished %d In Progress %d", ipu1ch.qwc, IPU1Status.DMAFinished, IPU1Status.InProgress);
totalqwc += IPU1chain();
//Set the TADR forward
}
}
break;
}
//Do this here to prevent double settings on Chain DMA's
if(totalqwc > 0 || ipu1ch.qwc == 0)
{
IPU_INT_TO(totalqwc * BIAS);
IPUProcessInterrupt();
}
else
{
cpuRegs.eCycle[4] = 0x9999;//IPU_INT_TO(2048);
}
IPU_LOG("Completed Call IPU1 DMA QWC Remaining %x Finished %d In Progress %d tadr %x", ipu1ch.qwc, IPU1Status.DMAFinished, IPU1Status.InProgress, ipu1ch.tadr);
return totalqwc;
}
void _dmaSPR1() // toSPR work function
{
switch(spr1ch.chcr.MOD)
{
case NORMAL_MODE:
{
//int cycles = 0;
// Transfer Dn_QWC from Dn_MADR to SPR1
SPR1chain();
spr1finished = true;
return;
}
case CHAIN_MODE:
{
tDMA_TAG *ptag;
bool done = false;
if (spr1ch.qwc > 0)
{
SPR_LOG("spr1 Normal or in Progress size=%d, addr=%lx taddr=%lx saddr=%lx", spr1ch.qwc, spr1ch.madr, spr1ch.tadr, spr1ch.sadr);
// Transfer Dn_QWC from Dn_MADR to SPR1
SPR1chain();
return;
}
// Chain Mode
ptag = SPRdmaGetAddr(spr1ch.tadr, false); //Set memory pointer to TADR
if (!spr1ch.transfer("SPR1 Tag", ptag))
{
done = true;
spr1finished = done;
}
spr1ch.madr = ptag[1]._u32; //MADR = ADDR field + SPR
// Transfer dma tag if tte is set
if (spr1ch.chcr.TTE)
{
SPR_LOG("SPR TTE: %x_%x\n", ptag[3]._u32, ptag[2]._u32);
SPR1transfer(ptag, 1); //Transfer Tag
}
SPR_LOG("spr1 dmaChain %8.8x_%8.8x size=%d, id=%d, addr=%lx taddr=%lx saddr=%lx",
ptag[1]._u32, ptag[0]._u32, spr1ch.qwc, ptag->ID, spr1ch.madr, spr1ch.tadr, spr1ch.sadr);
done = (hwDmacSrcChain(spr1ch, ptag->ID));
SPR1chain(); //Transfers the data set by the switch
if (spr1ch.chcr.TIE && ptag->IRQ) //Check TIE bit of CHCR and IRQ bit of tag
{
SPR_LOG("dmaIrq Set");
//Console.WriteLn("SPR1 TIE");
done = true;
}
spr1finished = done;
break;
}
//case INTERLEAVE_MODE:
default:
{
_SPR1interleave();
spr1finished = true;
break;
}
}
}
