void FifoPlayer::SetupFifo()
{
WriteCP(0x02, 0); // disable read, BP, interrupts
WriteCP(0x04, 7); // clear overflow, underflow, metrics
const FifoFrameInfo& frame = m_File->GetFrame(m_CurrentFrame);
// Set fifo bounds
WriteCP(0x20, frame.fifoStart);
WriteCP(0x22, frame.fifoStart >> 16);
WriteCP(0x24, frame.fifoEnd);
WriteCP(0x26, frame.fifoEnd >> 16);
// Set watermarks
u32 fifoSize = frame.fifoEnd - frame.fifoStart;
WriteCP(0x28, fifoSize);
WriteCP(0x2a, fifoSize >> 16);
WriteCP(0x2c, 0);
WriteCP(0x2e, 0);
// Set R/W pointers to fifo start
WriteCP(0x30, 0);
WriteCP(0x32, 0);
WriteCP(0x34, frame.fifoStart);
WriteCP(0x36, frame.fifoStart >> 16);
WriteCP(0x38, frame.fifoStart);
WriteCP(0x3a, frame.fifoStart >> 16);
// Set fifo bounds
WritePI(12, frame.fifoStart);
WritePI(16, frame.fifoEnd);
// Set write pointer
WritePI(20, frame.fifoStart);
FlushWGP();
WritePI(20, frame.fifoStart);
WriteCP(0x02, 17); // enable read & GP link
}
void FifoPlayer::SetupFifo()
{
WriteCP(CommandProcessor::CTRL_REGISTER, 0); // disable read, BP, interrupts
WriteCP(CommandProcessor::CLEAR_REGISTER, 7); // clear overflow, underflow, metrics
const FifoFrameInfo& frame = m_File->GetFrame(m_CurrentFrame);
// Set fifo bounds
WriteCP(CommandProcessor::FIFO_BASE_LO, frame.fifoStart);
WriteCP(CommandProcessor::FIFO_BASE_HI, frame.fifoStart >> 16);
WriteCP(CommandProcessor::FIFO_END_LO, frame.fifoEnd);
WriteCP(CommandProcessor::FIFO_END_HI, frame.fifoEnd >> 16);
// Set watermarks, high at 75%, low at 0%
u32 hi_watermark = (frame.fifoEnd - frame.fifoStart) * 3 / 4;
WriteCP(CommandProcessor::FIFO_HI_WATERMARK_LO, hi_watermark);
WriteCP(CommandProcessor::FIFO_HI_WATERMARK_HI, hi_watermark >> 16);
WriteCP(CommandProcessor::FIFO_LO_WATERMARK_LO, 0);
WriteCP(CommandProcessor::FIFO_LO_WATERMARK_HI, 0);
// Set R/W pointers to fifo start
WriteCP(CommandProcessor::FIFO_RW_DISTANCE_LO, 0);
WriteCP(CommandProcessor::FIFO_RW_DISTANCE_HI, 0);
WriteCP(CommandProcessor::FIFO_WRITE_POINTER_LO, frame.fifoStart);
WriteCP(CommandProcessor::FIFO_WRITE_POINTER_HI, frame.fifoStart >> 16);
WriteCP(CommandProcessor::FIFO_READ_POINTER_LO, frame.fifoStart);
WriteCP(CommandProcessor::FIFO_READ_POINTER_HI, frame.fifoStart >> 16);
// Set fifo bounds
WritePI(ProcessorInterface::PI_FIFO_BASE, frame.fifoStart);
WritePI(ProcessorInterface::PI_FIFO_END, frame.fifoEnd);
// Set write pointer
WritePI(ProcessorInterface::PI_FIFO_WPTR, frame.fifoStart);
FlushWGP();
WritePI(ProcessorInterface::PI_FIFO_WPTR, frame.fifoStart);
WriteCP(CommandProcessor::CTRL_REGISTER, 17); // enable read & GP link
}
