mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-10-08 08:33:28 +00:00
DC fix/hack: 1) now a GP-watchdog thread on core 2 locks CPU in gatherpipe (TODO better). 2) Video_SendFifoData send full fifo to GP (should be faster by avoiding the decoder to stall).
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@1178 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
memberTwo.mb2
parent
dc123aeebf
commit
ab1774b28a
@ -26,22 +26,32 @@
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// - Animal Crossing: PEfinish at start but there's a bug...
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// There's tons of HiWmk/LoWmk ping pong -> Another sync fashion?
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// *What I guess (thx to asynchronous DualCore mode):
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// PPC have a frame-finish watchdog. Handled by system timming stuff like the decrementer.
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// (DualCore mode): I have observed, after ZTP logos, a fifo-recovery start when DECREMENTER_EXCEPTION is throwned.
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// The frame setting (by GP) took too much time and didn't finish properly due to this watchdog.
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// Faster GX plugins required, indeed :p
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// * BPs are needed for some game GP/CPU sync.
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// But it could slowdown (MP1 at least) because our GP in DC is faster than "expected" in some area.
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// eg: in movie-menus in MP1, BP are reached quickly.
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// The bad thing is that involve too much PPC work (int ack, lock GP, reset BP, new BP addr, unlock BP...) hence the slowdown.
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// Anyway, emulation is more accurate like this and it emulate some sort of better load balancing.
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// Anyway, emulation should more accurate like this and it emulate some sort of better load balancing.
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// Eather way in those area a more accurate GP timing could be done by slowing down the GP or something less stupid.
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// Not functional and not used atm (breaks MP2).
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// * funny, in revs before those with this note, BP irq wasn't cleared (a bug indeed) and MP1 menus was faster.
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// BP irq was raised and ack just once but never cleared. However it's sufficient for MP1 to work.
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// I see a possible ugly hack there :p
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// This hack is used atm. Known BPs handling doesn't work well (btw, BP irq clearing might be done by CPIntEnable raising edge).
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// The hack seems to be responsible of the movie stutering in MP1 menus.
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// TODO (mb2):
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// * raise watermark Ov/Un irq: DONE but not commited because useless(?) and it slowdown DC.
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// TODO: commit #ifdef'ed?... if I'm begged :p
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// * raise ReadIdle/CmdIdle irq and observe behaviour of MP1 & ZTP (at least)
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// * find who command a complete fifo flush (could be some sort of timeout + wait for ReadIdle irq)
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// * raise watermark Ov/Un irq: POINTLESS since emulated GP timings can't be accuratly set.
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// Only 3 choises IMHO for a correct emulated load balancing in DC mode:
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// - make our own GP watchdog hack that can lock CPU if GP too slow.
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// - hack directly something in PPC timings (dunno how)
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// - boost GP so we can consider it as infinitly fast compared to CPU.
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// * raise ReadIdle/CmdIdle flags and observe behaviour of MP1 & ZTP (at least)
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// * investigate VI and PI for fixing the DC ZTP bug.
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// * Clean useless comments and debug stuff in Read16, Write16, GatherPipeBursted when sync will be fixed for DC
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// * (reminder) do the same in:
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@ -160,6 +170,16 @@ inline u16 ReadHigh (u32 _reg) {return (u16)(_reg >> 16);}
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int et_UpdateInterrupts;
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// for GP watchdog hack
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void IncrementGPWDToken()
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{
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#ifdef WIN32
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InterlockedIncrement((LONG*)&fifo.Fake_GPWDToken);
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#else
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//TODO
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#endif
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}
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void UpdateInterrupts_Wrapper(u64 userdata, int cyclesLate)
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{
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UpdateInterrupts();
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@ -180,17 +200,14 @@ void Init()
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m_tokenReg = 0;
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fifo.bFF_GPReadEnable = FALSE;
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fifo.bFF_GPLinkEnable = FALSE;
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fifo.bFF_BPEnable = FALSE;
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fifo.bFF_GPReadEnable = FALSE;
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fifo.bFF_GPLinkEnable = FALSE;
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fifo.bFF_BPEnable = FALSE;
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// for GP watchdog hack
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fifo.Fake_GPWDInterrupt = FALSE;
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fifo.Fake_GPWDToken = 0;
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et_UpdateInterrupts = CoreTiming::RegisterEvent("UpdateInterrupts", UpdateInterrupts_Wrapper);
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#ifdef _WIN32
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//InitializeCriticalSection(&fifo.sync);
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#else
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// fifo.sync = new Common::CriticalSection(0);
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#endif
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}
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void Shutdown()
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@ -250,6 +267,9 @@ void Read16(u16& _rReturnValue, const u32 _Address)
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case FIFO_BP_LO: _rReturnValue = ReadLow (fifo.CPBreakpoint); return;
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case FIFO_BP_HI: _rReturnValue = ReadHigh(fifo.CPBreakpoint); return;
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// case 0x42: // first metric reg (I guess) read in case of "fifo unknown state"
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// Crash();
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// return;
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// case 0x64:
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// return 4; //Number of clocks per vertex.. todo: calculate properly
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@ -313,11 +333,6 @@ void Write16(const u16 _Value, const u32 _Address)
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ct++;
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if (ct) {LOG(COMMANDPROCESSOR, "(Write16): %lu cycles for nothing :[ ", ct);}
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}
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#ifdef _WIN32
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//EnterCriticalSection(&fifo.sync);
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#else
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// fifo.sync->Enter();
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#endif
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}
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switch (_Address & 0xFFF)
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@ -451,30 +466,18 @@ void Write16(const u16 _Value, const u32 _Address)
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case FIFO_RW_DISTANCE_LO:
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LOG(COMMANDPROCESSOR,"try to write to %s : %04x",((_Address & 0xFFF) == FIFO_RW_DISTANCE_HI) ? "FIFO_RW_DISTANCE_HI" : "FIFO_RW_DISTANCE_LO", _Value);
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_dbg_assert_msg_(COMMANDPROCESSOR, _Value==0, "WTF? attempt to overwrite fifo CPReadWriteDistance with a value(%04x) != 0 ",_Value);
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// TODO: break this hack
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// hack: if fifo is not empty and readable then spin until flushed
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// sleeping here is not a perf issue since GXSetFifo shouldn't be called too much often.
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while((fifo.CPReadWriteDistance>0) && (fifo.bFF_GPReadEnable==1))
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Common::SleepCurrentThread(1);
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_dbg_assert_msg_(COMMANDPROCESSOR, !(fifo.CPReadWriteDistance!=0 && fifo.bFF_GPReadEnable==0), "Is that bad? WARNING: reset a not empty and not readable fifo.\n CPReadWriteDistance: %08x | fifo.bFF_GPReadEnable: %i",fifo.CPReadWriteDistance,fifo.bFF_GPReadEnable);
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// This SHOULD NOT be a problem to overwrite here unless this msg appears:
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_dbg_assert_msg_(COMMANDPROCESSOR, fifo.CPReadWriteDistance==0, "Is that bad? WARNING: reset a non empty fifo.\n CPReadWriteDistance: %08x | fifo.bFF_GPReadEnable: %i",fifo.CPReadWriteDistance,fifo.bFF_GPReadEnable);
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//_dbg_assert_msg_(COMMANDPROCESSOR, !(fifo.CPReadWriteDistance!=0 && fifo.bFF_GPReadEnable==0), "Is that bad? WARNING: reset a not empty and not readable fifo.\n CPReadWriteDistance: %08x | fifo.bFF_GPReadEnable: %i",fifo.CPReadWriteDistance,fifo.bFF_GPReadEnable);
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#ifdef _WIN32
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InterlockedExchange((LONG*)&fifo.CPReadWriteDistance, 0);
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//InterlockedExchange((LONG*)&fifo.CPReadWriteDistance, 0);
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#else
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Common::InterlockedExchange((int*)&fifo.CPReadWriteDistance, 0);
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//Common::InterlockedExchange((int*)&fifo.CPReadWriteDistance, 0);
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#endif
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break;
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}
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// (mb2) very dangerous to UpdateFifoRegister() that way in DC when there no criticalsections anymore
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// ... completely useless btw :p
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// update the registers and run the fifo
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//UpdateFifoRegister();
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//if (Core::g_CoreStartupParameter.bUseDualCore)
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#ifdef _WIN32
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//LeaveCriticalSection(&fifo.sync);
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#else
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// fifo.sync->Leave();
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#endif
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}
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void Read32(u32& _rReturnValue, const u32 _Address)
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@ -496,6 +499,17 @@ void GatherPipeBursted()
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if (Core::g_CoreStartupParameter.bUseDualCore)
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{
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// for GP watchdog hack
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if (fifo.Fake_GPWDInterrupt)
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{
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// Wait for GPU to catch up
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while (fifo.CPReadWriteDistance > 0) // TOCHECK: more checks could be needed
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;
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InterlockedExchange((LONG*)&fifo.Fake_GPWDInterrupt, 0);
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LOGV(COMMANDPROCESSOR, 2, "!!! Fake_GPWDInterrupt raised. Fake_GPWDToken %i",fifo.Fake_GPWDToken);
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}
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// update the fifo-pointer
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fifo.CPWritePointer += GPFifo::GATHER_PIPE_SIZE;
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if (fifo.CPWritePointer >= fifo.CPEnd)
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@ -506,25 +520,13 @@ void GatherPipeBursted()
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Common::InterlockedExchangeAdd((int*)&fifo.CPReadWriteDistance, GPFifo::GATHER_PIPE_SIZE);
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#endif
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// Wait for GPU to catch up
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#if 0
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// High watermark overflow handling: hacked way
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u32 ct=0;
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while (!(fifo.bFF_BPEnable && fifo.bFF_Breakpoint) && fifo.CPReadWriteDistance > (s32)fifo.CPHiWatermark)
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{
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ct++;
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// dunno if others threads (like the audio thread) really need a forced context switch here
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//Common::SleepCurrentThread(1);
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}
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if (ct) {LOG(COMMANDPROCESSOR, "(GatherPipeBursted): %lu cycles for nothing :[ ", ct);}
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#else
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// High watermark overflow handling: less hacked way
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// High watermark overflow handling (hacked way)
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u32 ct=0;
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if (fifo.CPReadWriteDistance > (s32)fifo.CPHiWatermark)
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{
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// we should raise an Ov interrupt for an accurate fifo emulation and let PPC deal with it.
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// But it slowdown things because of if(interrupt blah blah){} blocks for each 32B fifo transactions.
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// CPU would be a bit more loaded too by interrupt handling...
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// CPU would be a bit more loaded too by its interrupt handling...
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// Eather way, CPU would have the ability to resume another thread.
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// To be clear: this spin loop is like a critical section spin loop in the emulated GX thread hence "hacked way"
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@ -538,6 +540,7 @@ void GatherPipeBursted()
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// - CPU can write to fifo
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// - disable Underflow interrupt
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// Wait for GPU to catch up
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//while (!(fifo.bFF_BPEnable && fifo.bFF_Breakpoint) && fifo.CPReadWriteDistance > (s32)fifo.CPLoWatermark)
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while (fifo.CPReadWriteDistance > (s32)fifo.CPLoWatermark)
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{
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@ -545,21 +548,13 @@ void GatherPipeBursted()
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// dunno if others threads (like the audio thread) really need a forced context switch here
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//Common::SleepCurrentThread(1);
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}
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if (ct) {LOG(COMMANDPROCESSOR, "(GatherPipeBursted): %lu cycles for nothing :[ ", ct);}
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if (ct) {LOG(COMMANDPROCESSOR, "(GatherPipeBursted): %lu cycles for nothing :[", ct);}
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/**/
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}
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#endif
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// check if we are in sync
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_assert_msg_(COMMANDPROCESSOR, fifo.CPWritePointer == CPeripheralInterface::Fifo_CPUWritePointer, "FIFOs linked but out of sync");
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_assert_msg_(COMMANDPROCESSOR, fifo.CPBase == CPeripheralInterface::Fifo_CPUBase, "FIFOs linked but out of sync");
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_assert_msg_(COMMANDPROCESSOR, fifo.CPEnd == CPeripheralInterface::Fifo_CPUEnd, "FIFOs linked but out of sync");
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// no not from CPU. Only GP can throw BP irq
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/*if (fifo.bFF_Breakpoint)
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{
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m_CPStatusReg.Breakpoint = 1;
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UpdateInterrupts();
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}/**/
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}
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else
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{
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@ -606,7 +601,7 @@ void CatchUpGPU()
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// We are going to do FP math on the main thread so have to save the current state
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SaveSSEState();
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LoadDefaultSSEState();
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PluginVideo::Video_SendFifoData(ptr);
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PluginVideo::Video_SendFifoData(ptr,32);
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LoadSSEState();
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fifo.CPReadWriteDistance -= 32;
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@ -79,6 +79,9 @@ void UpdateInterruptsFromVideoPlugin();
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bool AllowIdleSkipping();
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// for GP watchdog hack
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void IncrementGPWDToken();
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} // end of namespace CommandProcessor
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#endif
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@ -177,6 +177,7 @@ void SetFinish_OnMainThread(u64 userdata, int cyclesLate)
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{
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g_bSignalFinishInterrupt = 1;
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UpdateInterrupts();
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CommandProcessor::IncrementGPWDToken();
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}
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// SetToken
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@ -38,7 +38,7 @@ typedef void (__cdecl* TDllDebugger)(HWND);
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typedef void (__cdecl* TVideo_Initialize)(SVideoInitialize*);
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typedef void (__cdecl* TVideo_Prepare)();
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typedef void (__cdecl* TVideo_Shutdown)();
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typedef void (__cdecl* TVideo_SendFifoData)(u8*);
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typedef void (__cdecl* TVideo_SendFifoData)(u8*,u32);
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typedef void (__cdecl* TVideo_UpdateXFB)(u8*, u32, u32, s32);
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typedef BOOL (__cdecl* TVideo_Screenshot)(TCHAR*);
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typedef void (__cdecl* TVideo_EnterLoop)();
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@ -67,12 +67,9 @@ u8* FAKE_GetFifoEndPtr()
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return &videoBuffer[size];
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}
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void Video_SendFifoData(u8* _uData)
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void Video_SendFifoData(u8* _uData, u32 len)
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{
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// TODO (mb2): unrolled loop faster than memcpy here?
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memcpy(videoBuffer + size, _uData, 32);
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size += 32;
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if (size + 32 >= FIFO_SIZE)
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if (size + len >= FIFO_SIZE)
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{
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int pos = (int)(g_pVideoData-videoBuffer);
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if (size-pos > pos)
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@ -83,12 +80,38 @@ void Video_SendFifoData(u8* _uData)
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size -= pos;
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g_pVideoData = FAKE_GetFifoStartPtr();
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}
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memcpy(videoBuffer + size, _uData, len);
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size += len;
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OpcodeDecoder_Run();
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}
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// for GP watchdog hack
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THREAD_RETURN GPWatchdogThread(void *pArg)
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{
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const SCPFifoStruct &_fifo = *(SCPFifoStruct*)pArg;
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u32 token = 0;
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Common::SetCurrentThreadName("GPWatchdogThread");
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Common::Thread::SetCurrentThreadAffinity(2); //Force to second core
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//int i=30*1000/16;
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while (1)
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{
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Common::SleepCurrentThread(8); // about 1s/60/2 (less than twice a frame should be enough)
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//if (!_fifo.bFF_GPReadIdle)
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// TODO (mb2): FIX this !!!
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//if (token == _fifo.Fake_GPWDToken)
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{
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InterlockedExchange((LONG*)&_fifo.Fake_GPWDInterrupt, 1);
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//__Log(LogTypes::VIDEO,"!!! Watchdog hit",_fifo.CPReadWriteDistance);
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}
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token = _fifo.Fake_GPWDToken;
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//i--;
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}
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return 0;
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}
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//TODO - turn inside out, have the "reader" ask for bytes instead
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// See Core.cpp for threading idea
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void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
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{
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SCPFifoStruct &_fifo = *video_initialize.pCPFifo;
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@ -97,6 +120,10 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
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if (hEventOnIdle==NULL) PanicAlert("Fifo_EnterLoop() -> EventOnIdle NULL");
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#endif
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// for GP watchdog hack
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Common::Thread *watchdogThread = NULL;
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watchdogThread = new Common::Thread(GPWatchdogThread, (void*)&_fifo);
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#ifdef _WIN32
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// TODO(ector): Don't peek so often!
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while (video_initialize.pPeekMessages())
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@ -123,7 +150,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
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#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
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while(_fifo.CPReadWriteDistance > 0)
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#else
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while(_fifo.bFF_GPReadEnable && (_fifo.CPReadWriteDistance > 0) )// && count)
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while(_fifo.bFF_GPReadEnable && (_fifo.CPReadWriteDistance > 0) )
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#endif
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{
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// check if we are on a breakpoint
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@ -144,28 +171,27 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
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// read the data and send it to the VideoPlugin
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u8 *uData = video_initialize.pGetMemoryPointer(_fifo.CPReadPointer);
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#ifdef _WIN32
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//EnterCriticalSection(&_fifo.sync);
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#else
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// _fifo.sync->Enter();
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#endif
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Video_SendFifoData(uData);
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// increase the ReadPtr
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u32 readPtr = _fifo.CPReadPointer+32;
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if (readPtr >= _fifo.CPEnd)
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readPtr = _fifo.CPBase;
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u32 dist = _fifo.CPReadWriteDistance;
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u32 readPtr = _fifo.CPReadPointer;
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if ( (dist+readPtr) > _fifo.CPEnd) // TODO: better
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{
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dist =_fifo.CPEnd - readPtr;
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readPtr = _fifo.CPBase;
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}
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else
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readPtr += dist;
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Video_SendFifoData(uData, dist);
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#ifdef _WIN32
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InterlockedExchange((LONG*)&_fifo.CPReadPointer, readPtr);
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InterlockedExchangeAdd((LONG*)&_fifo.CPReadWriteDistance, -32);
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//LeaveCriticalSection(&_fifo.sync);
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InterlockedExchangeAdd((LONG*)&_fifo.CPReadWriteDistance, -dist);
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#else
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Common::InterlockedExchange((int*)&_fifo.CPReadPointer, readPtr);
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Common::InterlockedExchangeAdd((int*)&_fifo.CPReadWriteDistance, -32);
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// _fifo.sync->Leave();
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Common::InterlockedExchangeAdd((int*)&_fifo.CPReadWriteDistance, -dist);
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#endif
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}
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}
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}
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}
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#if defined(THREAD_VIDEO_WAKEUP_ONIDLE) && defined(_WIN32)
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CloseHandle(hEventOnIdle);
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@ -39,11 +39,10 @@ typedef struct
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volatile BOOL bFF_BPEnable;
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volatile BOOL bFF_GPLinkEnable;
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volatile BOOL bFF_Breakpoint;
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#ifdef _WIN32
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// CRITICAL_SECTION sync;
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#else
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Common::CriticalSection *sync;
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#endif
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// for GP watchdog hack
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volatile BOOL Fake_GPWDInterrupt;
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volatile u32 Fake_GPWDToken; // cicular incrementer
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} SCPFifoStruct;
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typedef struct
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@ -137,7 +136,7 @@ EXPORT void CALL Video_Shutdown(void);
|
||||
// input: a data-byte (i know we have to optimize this ;-))
|
||||
// output: none
|
||||
//
|
||||
EXPORT void CALL Video_SendFifoData(u8* _uData);
|
||||
EXPORT void CALL Video_SendFifoData(u8* _uData, u32 len);
|
||||
|
||||
// __________________________________________________________________________________________________
|
||||
// Function: Video_UpdateXFB
|
||||
|
||||
Loading…
Reference in New Issue
Block a user