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https://github.com/dolphin-emu/dolphin.git
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148 lines
3.8 KiB
C++
148 lines
3.8 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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// http://developer.nvidia.com/object/General_FAQ.html#t6 !!!!!
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#include "Common/ChunkFile.h"
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#include "Common/Common.h"
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#include "Core/ConfigManager.h"
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#include "Core/CoreTiming.h"
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#include "Core/HW/MMIO.h"
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#include "Core/HW/ProcessorInterface.h"
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#include "VideoBackends/Software/SWCommandProcessor.h"
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#include "VideoBackends/Software/SWPixelEngine.h"
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namespace SWPixelEngine
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{
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enum
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{
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INT_CAUSE_PE_TOKEN = 0x200, // GP Token
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INT_CAUSE_PE_FINISH = 0x400, // GP Finished
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};
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// STATE_TO_SAVE
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PEReg pereg;
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static bool g_bSignalTokenInterrupt;
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static bool g_bSignalFinishInterrupt;
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static int et_SetTokenOnMainThread;
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static int et_SetFinishOnMainThread;
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void DoState(PointerWrap &p)
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{
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p.DoPOD(pereg);
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p.Do(g_bSignalTokenInterrupt);
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p.Do(g_bSignalFinishInterrupt);
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p.Do(et_SetTokenOnMainThread);
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p.Do(et_SetFinishOnMainThread);
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}
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void UpdateInterrupts();
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void SetToken_OnMainThread(u64 userdata, int cyclesLate);
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void SetFinish_OnMainThread(u64 userdata, int cyclesLate);
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void Init()
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{
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memset(&pereg, 0, sizeof(pereg));
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et_SetTokenOnMainThread = false;
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g_bSignalFinishInterrupt = false;
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et_SetTokenOnMainThread = CoreTiming::RegisterEvent("SetToken", SetToken_OnMainThread);
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et_SetFinishOnMainThread = CoreTiming::RegisterEvent("SetFinish", SetFinish_OnMainThread);
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}
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void RegisterMMIO(MMIO::Mapping* mmio, u32 base)
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{
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// Directly map reads and writes to the pereg structure.
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for (size_t i = 0; i < sizeof (pereg) / sizeof (u16); ++i)
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{
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u16* ptr = (u16*)&pereg + i;
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mmio->Register(base | (i * 2),
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MMIO::DirectRead<u16>(ptr),
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MMIO::DirectWrite<u16>(ptr)
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);
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}
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// The control register has some more complex logic to perform on writes.
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mmio->RegisterWrite(base | PE_CTRL_REGISTER,
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MMIO::ComplexWrite<u16>([](u32, u16 val) {
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UPECtrlReg tmpCtrl(val);
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if (tmpCtrl.PEToken) g_bSignalTokenInterrupt = false;
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if (tmpCtrl.PEFinish) g_bSignalFinishInterrupt = false;
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pereg.ctrl.PETokenEnable = tmpCtrl.PETokenEnable;
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pereg.ctrl.PEFinishEnable = tmpCtrl.PEFinishEnable;
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pereg.ctrl.PEToken = 0; // this flag is write only
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pereg.ctrl.PEFinish = 0; // this flag is write only
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UpdateInterrupts();
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})
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);
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}
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bool AllowIdleSkipping()
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{
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return !SConfig::GetInstance().m_LocalCoreStartupParameter.bCPUThread || (!pereg.ctrl.PETokenEnable && !pereg.ctrl.PEFinishEnable);
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}
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void UpdateInterrupts()
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{
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// check if there is a token-interrupt
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if (g_bSignalTokenInterrupt & pereg.ctrl.PETokenEnable)
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ProcessorInterface::SetInterrupt(INT_CAUSE_PE_TOKEN, true);
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else
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ProcessorInterface::SetInterrupt(INT_CAUSE_PE_TOKEN, false);
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// check if there is a finish-interrupt
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if (g_bSignalFinishInterrupt & pereg.ctrl.PEFinishEnable)
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ProcessorInterface::SetInterrupt(INT_CAUSE_PE_FINISH, true);
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else
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ProcessorInterface::SetInterrupt(INT_CAUSE_PE_FINISH, false);
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}
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// Called only if BPMEM_PE_TOKEN_INT_ID is ack by GP
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void SetToken_OnMainThread(u64 userdata, int cyclesLate)
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{
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g_bSignalTokenInterrupt = true;
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INFO_LOG(PIXELENGINE, "VIDEO Backend raises INT_CAUSE_PE_TOKEN (btw, token: %04x)", pereg.token);
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UpdateInterrupts();
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}
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void SetFinish_OnMainThread(u64 userdata, int cyclesLate)
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{
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g_bSignalFinishInterrupt = true;
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UpdateInterrupts();
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}
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// SetToken
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// THIS IS EXECUTED FROM VIDEO THREAD
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void SetToken(const u16 _token, const int _bSetTokenAcknowledge)
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{
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pereg.token = _token;
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if (_bSetTokenAcknowledge) // set token INT
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{
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CoreTiming::ScheduleEvent_Threadsafe(0, et_SetTokenOnMainThread,
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_token | (_bSetTokenAcknowledge << 16));
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}
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}
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// SetFinish
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// THIS IS EXECUTED FROM VIDEO THREAD
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void SetFinish()
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{
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CoreTiming::ScheduleEvent_Threadsafe(0, et_SetFinishOnMainThread, 0);
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INFO_LOG(PIXELENGINE, "VIDEO Set Finish");
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}
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} // end of namespace SWPixelEngine
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