void GatherPipeBursted()
{
if (IsOnThread())
SetCPStatusFromCPU();
ProcessFifoEvents();
// if we aren't linked, we don't care about gather pipe data
if (!m_CPCtrlReg.GPLinkEnable)
{
if (IsOnThread() && !g_use_deterministic_gpu_thread)
{
// In multibuffer mode is not allowed write in the same FIFO attached to the GPU.
// Fix Pokemon XD in DC mode.
if ((ProcessorInterface::Fifo_CPUEnd == fifo.CPEnd) &&
(ProcessorInterface::Fifo_CPUBase == fifo.CPBase) &&
fifo.CPReadWriteDistance > 0)
{
FlushGpu();
}
}
RunGpu();
return;
}
// update the fifo pointer
if (fifo.CPWritePointer == fifo.CPEnd)
fifo.CPWritePointer = fifo.CPBase;
else
fifo.CPWritePointer += GATHER_PIPE_SIZE;
if (m_CPCtrlReg.GPReadEnable && m_CPCtrlReg.GPLinkEnable)
{
ProcessorInterface::Fifo_CPUWritePointer = fifo.CPWritePointer;
ProcessorInterface::Fifo_CPUBase = fifo.CPBase;
ProcessorInterface::Fifo_CPUEnd = fifo.CPEnd;
}
// If the game is running close to overflowing, make the exception checking more frequent.
if (fifo.bFF_HiWatermark)
CoreTiming::ForceExceptionCheck(0);
Common::AtomicAdd(fifo.CPReadWriteDistance, GATHER_PIPE_SIZE);
RunGpu();
_assert_msg_(COMMANDPROCESSOR, fifo.CPReadWriteDistance <= fifo.CPEnd - fifo.CPBase,
"FIFO is overflowed by GatherPipe !\nCPU thread is too fast!");
// check if we are in sync
_assert_msg_(COMMANDPROCESSOR, fifo.CPWritePointer == ProcessorInterface::Fifo_CPUWritePointer, "FIFOs linked but out of sync");
_assert_msg_(COMMANDPROCESSOR, fifo.CPBase == ProcessorInterface::Fifo_CPUBase, "FIFOs linked but out of sync");
_assert_msg_(COMMANDPROCESSOR, fifo.CPEnd == ProcessorInterface::Fifo_CPUEnd, "FIFOs linked but out of sync");
}
/* This function checks the emulated CPU - GPU distance and may wake up the GPU,
* or block the CPU if required. It should be called by the CPU thread regularly.
* @ticks The gone emulated CPU time.
* @return A good time to call WaitForGpuThread() next.
*/
static int WaitForGpuThread(int ticks)
{
const SConfig& param = SConfig::GetInstance();
int old = s_sync_ticks.fetch_add(ticks);
int now = old + ticks;
// GPU is idle, so stop polling.
if (old >= 0 && s_gpu_mainloop.IsDone())
return -1;
// Wakeup GPU
if (old < param.iSyncGpuMinDistance && now >= param.iSyncGpuMinDistance)
RunGpu();
// If the GPU is still sleeping, wait for a longer time
if (now < param.iSyncGpuMinDistance)
return GPU_TIME_SLOT_SIZE + param.iSyncGpuMinDistance - now;
// Wait for GPU
if (now >= param.iSyncGpuMaxDistance)
s_sync_wakeup_event.Wait();
return GPU_TIME_SLOT_SIZE;
}
int Fifo_Update(int ticks)
{
const SConfig& param = SConfig::GetInstance();
if (ticks == 0)
{
FlushGpu();
return param.iSyncGpuMaxDistance;
}
// GPU is sleeping, so no need for synchronization
if (s_gpu_mainloop.IsDone() || g_use_deterministic_gpu_thread)
{
if (s_sync_ticks.load() < 0)
{
int old = s_sync_ticks.fetch_add(ticks);
if (old < param.iSyncGpuMinDistance && old + ticks >= param.iSyncGpuMinDistance)
RunGpu();
}
return param.iSyncGpuMaxDistance;
}
int old = s_sync_ticks.fetch_add(ticks);
if (old < param.iSyncGpuMinDistance && old + ticks >= param.iSyncGpuMinDistance)
RunGpu();
if (s_sync_ticks.load() >= param.iSyncGpuMaxDistance)
{
while (s_sync_ticks.load() > 0)
{
s_sync_wakeup_event.Wait();
}
}
return param.iSyncGpuMaxDistance - s_sync_ticks.load();
}
void STACKALIGN GatherPipeBursted()
{
if (cpreg.ctrl.GPLinkEnable)
{
DEBUG_LOG(COMMANDPROCESSOR,"\t WGP burst. write thru : %08x", cpreg.writeptr);
if (cpreg.writeptr == cpreg.fifoend)
cpreg.writeptr = cpreg.fifobase;
else
cpreg.writeptr += GATHER_PIPE_SIZE;
Common::AtomicAdd(cpreg.rwdistance, GATHER_PIPE_SIZE);
}
RunGpu();
}
void UpdateInterrupts(u64 userdata)
{
if (userdata)
{
s_interrupt_set.store(true);
INFO_LOG(COMMANDPROCESSOR, "Interrupt set");
ProcessorInterface::SetInterrupt(INT_CAUSE_CP, true);
}
else
{
s_interrupt_set.store(false);
INFO_LOG(COMMANDPROCESSOR, "Interrupt cleared");
ProcessorInterface::SetInterrupt(INT_CAUSE_CP, false);
}
CoreTiming::ForceExceptionCheck(0);
s_interrupt_waiting.store(false);
RunGpu();
}
void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
{
struct {
u32 addr;
u16* ptr;
bool readonly;
bool writes_align_to_32_bytes;
} directly_mapped_vars[] = {
{ FIFO_TOKEN_REGISTER, &m_tokenReg },
// Bounding box registers are read only.
{ FIFO_BOUNDING_BOX_LEFT, &m_bboxleft, true },
{ FIFO_BOUNDING_BOX_RIGHT, &m_bboxright, true },
{ FIFO_BOUNDING_BOX_TOP, &m_bboxtop, true },
{ FIFO_BOUNDING_BOX_BOTTOM, &m_bboxbottom, true },
// Some FIFO addresses need to be aligned on 32 bytes on write - only
// the high part can be written directly without a mask.
{ FIFO_BASE_LO, MMIO::Utils::LowPart(&fifo.CPBase), false, true },
{ FIFO_BASE_HI, MMIO::Utils::HighPart(&fifo.CPBase) },
{ FIFO_END_LO, MMIO::Utils::LowPart(&fifo.CPEnd), false, true },
{ FIFO_END_HI, MMIO::Utils::HighPart(&fifo.CPEnd) },
{ FIFO_HI_WATERMARK_LO, MMIO::Utils::LowPart(&fifo.CPHiWatermark) },
{ FIFO_HI_WATERMARK_HI, MMIO::Utils::HighPart(&fifo.CPHiWatermark) },
{ FIFO_LO_WATERMARK_LO, MMIO::Utils::LowPart(&fifo.CPLoWatermark) },
{ FIFO_LO_WATERMARK_HI, MMIO::Utils::HighPart(&fifo.CPLoWatermark) },
// FIFO_RW_DISTANCE has some complex read code different for
// single/dual core.
{ FIFO_WRITE_POINTER_LO, MMIO::Utils::LowPart(&fifo.CPWritePointer), false, true },
{ FIFO_WRITE_POINTER_HI, MMIO::Utils::HighPart(&fifo.CPWritePointer) },
// FIFO_READ_POINTER has different code for single/dual core.
};
for (auto& mapped_var : directly_mapped_vars)
{
u16 wmask = mapped_var.writes_align_to_32_bytes ? 0xFFE0 : 0xFFFF;
mmio->Register(base | mapped_var.addr,
MMIO::DirectRead<u16>(mapped_var.ptr),
mapped_var.readonly
? MMIO::InvalidWrite<u16>()
: MMIO::DirectWrite<u16>(mapped_var.ptr, wmask)
);
}
mmio->Register(base | FIFO_BP_LO,
MMIO::DirectRead<u16>(MMIO::Utils::LowPart(&fifo.CPBreakpoint)),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
WriteLow(fifo.CPBreakpoint, val & 0xffe0);
})
);
mmio->Register(base | FIFO_BP_HI,
MMIO::DirectRead<u16>(MMIO::Utils::HighPart(&fifo.CPBreakpoint)),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
WriteHigh(fifo.CPBreakpoint, val);
})
);
// Timing and metrics MMIOs are stubbed with fixed values.
struct {
u32 addr;
u16 value;
} metrics_mmios[] = {
{ XF_RASBUSY_L, 0 },
{ XF_RASBUSY_H, 0 },
{ XF_CLKS_L, 0 },
{ XF_CLKS_H, 0 },
{ XF_WAIT_IN_L, 0 },
{ XF_WAIT_IN_H, 0 },
{ XF_WAIT_OUT_L, 0 },
{ XF_WAIT_OUT_H, 0 },
{ VCACHE_METRIC_CHECK_L, 0 },
{ VCACHE_METRIC_CHECK_H, 0 },
{ VCACHE_METRIC_MISS_L, 0 },
{ VCACHE_METRIC_MISS_H, 0 },
{ VCACHE_METRIC_STALL_L, 0 },
{ VCACHE_METRIC_STALL_H, 0 },
{ CLKS_PER_VTX_OUT, 4 },
};
for (auto& metrics_mmio : metrics_mmios)
{
mmio->Register(base | metrics_mmio.addr,
MMIO::Constant<u16>(metrics_mmio.value),
MMIO::InvalidWrite<u16>()
);
}
mmio->Register(base | STATUS_REGISTER,
MMIO::ComplexRead<u16>([](u32) {
SetCpStatusRegister();
return m_CPStatusReg.Hex;
}),
MMIO::InvalidWrite<u16>()
);
mmio->Register(base | CTRL_REGISTER,
MMIO::DirectRead<u16>(&m_CPCtrlReg.Hex),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
UCPCtrlReg tmp(val);
m_CPCtrlReg.Hex = tmp.Hex;
SetCpControlRegister();
RunGpu();
})
);
mmio->Register(base | CLEAR_REGISTER,
MMIO::DirectRead<u16>(&m_CPClearReg.Hex),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
UCPClearReg tmp(val);
m_CPClearReg.Hex = tmp.Hex;
SetCpClearRegister();
RunGpu();
})
);
mmio->Register(base | PERF_SELECT,
MMIO::InvalidRead<u16>(),
MMIO::Nop<u16>()
);
// Some MMIOs have different handlers for single core vs. dual core mode.
mmio->Register(base | FIFO_RW_DISTANCE_LO,
IsOnThread()
? MMIO::ComplexRead<u16>([](u32) {
if (fifo.CPWritePointer >= fifo.SafeCPReadPointer)
return ReadLow(fifo.CPWritePointer - fifo.SafeCPReadPointer);
else
return ReadLow(fifo.CPEnd - fifo.SafeCPReadPointer + fifo.CPWritePointer - fifo.CPBase + 32);
})
: MMIO::DirectRead<u16>(MMIO::Utils::LowPart(&fifo.CPReadWriteDistance)),
MMIO::DirectWrite<u16>(MMIO::Utils::LowPart(&fifo.CPReadWriteDistance), 0xFFE0)
);
mmio->Register(base | FIFO_RW_DISTANCE_HI,
IsOnThread()
? MMIO::ComplexRead<u16>([](u32) {
if (fifo.CPWritePointer >= fifo.SafeCPReadPointer)
return ReadHigh(fifo.CPWritePointer - fifo.SafeCPReadPointer);
else
return ReadHigh(fifo.CPEnd - fifo.SafeCPReadPointer + fifo.CPWritePointer - fifo.CPBase + 32);
})
: MMIO::DirectRead<u16>(MMIO::Utils::HighPart(&fifo.CPReadWriteDistance)),
MMIO::ComplexWrite<u16>([](u32, u16 val) {
WriteHigh(fifo.CPReadWriteDistance, val);
SyncGPU(SYNC_GPU_OTHER);
if (fifo.CPReadWriteDistance == 0)
{
GPFifo::ResetGatherPipe();
ResetVideoBuffer();
}
else
{
ResetVideoBuffer();
}
RunGpu();
})
);
mmio->Register(base | FIFO_READ_POINTER_LO,
IsOnThread()
? MMIO::DirectRead<u16>(MMIO::Utils::LowPart(&fifo.SafeCPReadPointer))
: MMIO::DirectRead<u16>(MMIO::Utils::LowPart(&fifo.CPReadPointer)),
MMIO::DirectWrite<u16>(MMIO::Utils::LowPart(&fifo.CPReadPointer), 0xFFE0)
);
mmio->Register(base | FIFO_READ_POINTER_HI,
IsOnThread()
? MMIO::DirectRead<u16>(MMIO::Utils::HighPart(&fifo.SafeCPReadPointer))
: MMIO::DirectRead<u16>(MMIO::Utils::HighPart(&fifo.CPReadPointer)),
IsOnThread()
? MMIO::ComplexWrite<u16>([](u32, u16 val) {
WriteHigh(fifo.CPReadPointer, val);
fifo.SafeCPReadPointer = fifo.CPReadPointer;
})
: MMIO::DirectWrite<u16>(MMIO::Utils::HighPart(&fifo.CPReadPointer))
);
}