Redo timing in DMAWrite/DMARead

Source/Core/Core/HW/EXI_Channel.cpp

@@ -31,7 +31,7 @@ CEXIChannel::CEXIChannel(u32 ChannelId) :
 		m_Status.CHIP_SELECT = 1;
 
 	for (auto& device : m_pDevices)
-		device.reset(EXIDevice_Create(EXIDEVICE_NONE, m_ChannelId));
+		device.reset(EXIDevice_Create(EXIDEVICE_NONE, this));
 
 	updateInterrupts = CoreTiming::RegisterEvent("EXIInterrupt", UpdateInterrupts);
 }
@@ -123,7 +123,6 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
 						case EXI_READWRITE: pDevice->ImmReadWrite(m_ImmData, m_Control.TLEN + 1); break;
 						default: _dbg_assert_msg_(EXPANSIONINTERFACE,0,"EXI Imm: Unknown transfer type %i", m_Control.RW);
 					}
-					m_Control.TSTART = 0;
 				}
 				else
 				{
@@ -134,14 +133,12 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
 						case EXI_WRITE: pDevice->DMAWrite(m_DMAMemoryAddress, m_DMALength); break;
 						default: _dbg_assert_msg_(EXPANSIONINTERFACE,0,"EXI DMA: Unknown transfer type %i", m_Control.RW);
 					}
-					m_Control.TSTART = 0;
 				}
 
-				if (!m_Control.TSTART) // completed !
+				m_Control.TSTART = 0;
-				{
+
-					m_Status.TCINT = 1;
+				if (pDevice->m_deviceType != EXIDEVICE_MEMORYCARD)
-					CoreTiming::ScheduleEvent_Threadsafe_Immediate(updateInterrupts, 0);
+					SendTransferComplete();
-				}
 			}
 		})
 	);
@@ -152,6 +149,12 @@ void CEXIChannel::RegisterMMIO(MMIO::Mapping* mmio, u32 base)
 	);
 }
 
+void CEXIChannel::SendTransferComplete()
+{
+	m_Status.TCINT = 1;
+	CoreTiming::ScheduleEvent_Threadsafe_Immediate(updateInterrupts, 0);
+}
+
 void CEXIChannel::RemoveDevices()
 {
 	for (auto& device : m_pDevices)
@@ -160,7 +163,7 @@ void CEXIChannel::RemoveDevices()
 
 void CEXIChannel::AddDevice(const TEXIDevices device_type, const int device_num)
 {
-	IEXIDevice* pNewDevice = EXIDevice_Create(device_type, m_ChannelId);
+	IEXIDevice* pNewDevice = EXIDevice_Create(device_type, this);
 	AddDevice(pNewDevice, device_num);
 }
 
@@ -232,7 +235,7 @@ void CEXIChannel::DoState(PointerWrap &p)
 		IEXIDevice* pDevice = m_pDevices[d].get();
 		TEXIDevices type = pDevice->m_deviceType;
 		p.Do(type);
-		IEXIDevice* pSaveDevice = (type == pDevice->m_deviceType) ? pDevice : EXIDevice_Create(type, m_ChannelId);
+		IEXIDevice* pSaveDevice = (type == pDevice->m_deviceType) ? pDevice : EXIDevice_Create(type, this);
 		pSaveDevice->DoState(p);
 		if (pSaveDevice != pDevice)
 		{

Source/Core/Core/HW/EXI_Channel.h

@@ -80,9 +80,6 @@ private:
 
 	std::unique_ptr<IEXIDevice> m_pDevices[NUM_DEVICES];
 
-	// Since channels operate a bit differently from each other
-	u32 m_ChannelId;
-
 	int updateInterrupts;
 
 	static void UpdateInterrupts(u64 userdata, int cyclesLate);
@@ -96,6 +93,8 @@ public:
 
 	void RegisterMMIO(MMIO::Mapping* mmio, u32 base);
 
+	void SendTransferComplete();
+
 	void AddDevice(const TEXIDevices device_type, const int device_num);
 	void AddDevice(IEXIDevice* pDevice, const int device_num, bool notifyPresenceChanged=true);
 
@@ -108,4 +107,7 @@ public:
 
 	// This should only be used to transition interrupts from SP1 to Channel 2
 	void SetEXIINT(bool exiint) { m_Status.EXIINT = !!exiint; }
+
+	// Since channels operate a bit differently from each other
+	u32 m_ChannelId;
 };

Source/Core/Core/HW/EXI_Device.cpp

@@ -5,6 +5,7 @@
 
 #include "Core/ConfigManager.h"
 #include "Core/Core.h"
+#include "Core/HW/EXI_Channel.h"
 #include "Core/HW/EXI_Device.h"
 #include "Core/HW/EXI_DeviceAD16.h"
 #include "Core/HW/EXI_DeviceAMBaseboard.h"
@@ -88,7 +89,7 @@ public:
 
 
 // F A C T O R Y
-IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
+IEXIDevice* EXIDevice_Create(TEXIDevices device_type, CEXIChannel* channel)
 {
 	IEXIDevice* result = nullptr;
 
@@ -102,7 +103,8 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
 	case EXIDEVICE_MEMORYCARDFOLDER:
 	{
 		bool gci_folder = (device_type == EXIDEVICE_MEMORYCARDFOLDER);
-		result = new CEXIMemoryCard(channel_num, gci_folder);
+		device_type = EXIDEVICE_MEMORYCARD;
+		result = new CEXIMemoryCard(channel->m_ChannelId, gci_folder);
 		break;
 	}
 	case EXIDEVICE_MASKROM:
@@ -114,7 +116,7 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
 		break;
 
 	case EXIDEVICE_MIC:
-		result = new CEXIMic(channel_num);
+		result = new CEXIMic(channel->m_ChannelId);
 		break;
 
 	case EXIDEVICE_ETH:
@@ -138,5 +140,7 @@ IEXIDevice* EXIDevice_Create(TEXIDevices device_type, const int channel_num)
 	if (result != nullptr)
 		result->m_deviceType = device_type;
 
+	result->m_channel = channel;
+
 	return result;
 }

Source/Core/Core/HW/EXI_Device.h

@@ -7,6 +7,8 @@
 #include "Common/ChunkFile.h"
 #include "Common/CommonTypes.h"
 
+class CEXIChannel;
+
 enum TEXIDevices
 {
 	EXIDEVICE_DUMMY,
@@ -48,9 +50,12 @@ public:
 	virtual bool IsInterruptSet() {return false;}
 	virtual ~IEXIDevice() {}
 
+	// Pointer to channel attached to the device
+	CEXIChannel* m_channel;
+
 	// for savestates. storing it here seemed cleaner than requiring each implementation to report its type.
 	// I know this class is set up like an interface, but no code requires it to be strictly such.
 	TEXIDevices m_deviceType;
 };
 
-IEXIDevice* EXIDevice_Create(const TEXIDevices device_type, const int channel_num);
+IEXIDevice* EXIDevice_Create(const TEXIDevices device_type, CEXIChannel* channel);

Source/Core/Core/HW/EXI_DeviceMemoryCard.cpp

@@ -11,6 +11,7 @@
 #include "Core/CoreTiming.h"
 #include "Core/Movie.h"
 #include "Core/HW/EXI.h"
+#include "Core/HW/EXI_Channel.h"
 #include "Core/HW/EXI_Device.h"
 #include "Core/HW/EXI_DeviceMemoryCard.h"
 #include "Core/HW/GCMemcard.h"
@@ -29,11 +30,8 @@
 #define MC_STATUS_READY             0x01
 #define SIZE_TO_Mb (1024 * 8 * 16)
 
-// These are rough estimates based on GameCube video evidence of memory card "speeds"
+static const u32 MC_TRANSFER_RATE_READ = 512 * 1024;
-// This will need to be refined, and perhaps the idea behind the speed thing is wrong
+static const u32 MC_TRANSFER_RATE_WRITE = (u32)(96.125f * 1024.0f);
-// But it works with (near?) perfect speed as far as saving goes
-static const float MC_TRANSFER_RATE_WRITE = 22.0f * 1024.0f;
-static const float MC_TRANSFER_RATE_READ = 73.84f * 1024.0f;
 
 void CEXIMemoryCard::FlushCallback(u64 userdata, int cyclesLate)
 {
@@ -56,6 +54,16 @@ void CEXIMemoryCard::CmdDoneCallback(u64 userdata, int cyclesLate)
 		pThis->CmdDone();
 }
 
+void CEXIMemoryCard::TransferCompleteCallback(u64 userdata, int cyclesLate)
+{
+	int card_index = (int)userdata;
+	CEXIMemoryCard* pThis = (CEXIMemoryCard*)ExpansionInterface::FindDevice(EXIDEVICE_MEMORYCARD, card_index);
+	if (pThis == nullptr)
+		pThis = (CEXIMemoryCard*)ExpansionInterface::FindDevice(EXIDEVICE_MEMORYCARDFOLDER, card_index);
+	if (pThis)
+		pThis->TransferComplete();
+}
+
 CEXIMemoryCard::CEXIMemoryCard(const int index, bool gciFolder)
 	: card_index(index)
 	, m_bDirty(false)
@@ -63,6 +71,7 @@ CEXIMemoryCard::CEXIMemoryCard(const int index, bool gciFolder)
 	// we're potentially leaking events here, since there's no UnregisterEvent until emu shutdown, but I guess it's inconsequential
 	et_this_card = CoreTiming::RegisterEvent((index == 0) ? "memcardFlushA" : "memcardFlushB", FlushCallback);
 	et_cmd_done = CoreTiming::RegisterEvent((index == 0) ? "memcardDoneA" : "memcardDoneB", CmdDoneCallback);
+	et_transfer_complete = CoreTiming::RegisterEvent((index == 0) ? "memcardTransferCompleteB" : "memcardTransferCompleteB", TransferCompleteCallback);
 
 	interruptSwitch = 0;
 	m_bInterruptSet = 0;
@@ -206,6 +215,17 @@ void CEXIMemoryCard::CmdDone()
 	m_bDirty = true;
 }
 
+void CEXIMemoryCard::TransferComplete()
+{
+	// Transfer complete, send interrupt
+	m_channel->SendTransferComplete();
+
+	// Page written to memory card, not just to buffer - let's schedule a flush 0.5b cycles into the future (1 sec)
+	// But first we unschedule already scheduled flushes - no point in flushing once per page for a large write.
+	CoreTiming::RemoveEvent(et_this_card);
+	CoreTiming::ScheduleEvent(500000000, et_this_card, (u64)card_index);
+}
+
 void CEXIMemoryCard::CmdDoneLater(u64 cycles)
 {
 	CoreTiming::RemoveEvent(et_cmd_done);
@@ -234,9 +254,6 @@ void CEXIMemoryCard::SetCS(int cs)
 
 				//???
 
-				if (address >= MC_DATA_FILES)
-					CmdDoneLater(BLOCK_SIZE * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
-				else
 				CmdDoneLater(5000);
 			}
 			break;
@@ -244,37 +261,19 @@ void CEXIMemoryCard::SetCS(int cs)
 		case cmdChipErase:
 			if (m_uPosition > 2)
 			{
-				// Clear only the system blocks
+				// TODO: Investigate on HW, I (LPFaint99) believe that this only erases the system area (Blocks 0-4)
-				for (int i = 0; i < 5; i++)
+				memorycard->ClearAll();
-					memorycard->ClearBlock(BLOCK_SIZE * i);
-
 				status &= ~MC_STATUS_BUSY;
 				m_bDirty = true;
-
-				if (address >= MC_DATA_FILES)
-					CmdDoneLater((BLOCK_SIZE * 5) * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
-				else
-					CmdDoneLater(5000);
-			}
-			break;
-
-		case cmdReadArray:
-			if (m_uPosition > 8)
-			{
-				// Each read is 512 bytes
-				if (address >= MC_DATA_FILES)
-					CmdDoneLater(512 * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_READ));
-				else
-					CmdDoneLater(5000);
 			}
 			break;
 
 		case cmdPageProgram:
-			if (m_uPosition > 4)
+			if (m_uPosition >= 5)
 			{
 				int count = m_uPosition - 5;
 				int i=0;
-				status &= ~MC_STATUS_BUSY;
+				status &= ~0x80;
 
 				while (count--)
 				{
@@ -283,10 +282,6 @@ void CEXIMemoryCard::SetCS(int cs)
 					address = (address & ~0x1FF) | ((address+1) & 0x1FF);
 				}
 
-				// Each write is 128 bytes
-				if (address >= MC_DATA_FILES)
-					CmdDoneLater(128 * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE));
-				else
 				CmdDoneLater(5000);
 			}
 			break;
@@ -505,10 +500,7 @@ IEXIDevice* CEXIMemoryCard::FindDevice(TEXIDevices device_type, int customIndex)
 void CEXIMemoryCard::DMARead(u32 _uAddr, u32 _uSize)
 {
 	memorycard->Read(address, _uSize, Memory::GetPointer(_uAddr));
-#ifdef _DEBUG
+	CoreTiming::ScheduleEvent(_uSize * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_READ), et_transfer_complete, (u64)card_index);
-	if ((address + _uSize) % BLOCK_SIZE == 0)
-		INFO_LOG(EXPANSIONINTERFACE, "reading from block: %x", address / BLOCK_SIZE);
-#endif
 }
 
 // DMA write are preceded by all of the necessary setup via IMMWrite
@@ -516,19 +508,5 @@ void CEXIMemoryCard::DMARead(u32 _uAddr, u32 _uSize)
 void CEXIMemoryCard::DMAWrite(u32 _uAddr, u32 _uSize)
 {
 	memorycard->Write(address, _uSize, Memory::GetPointer(_uAddr));
-
+	CoreTiming::ScheduleEvent(_uSize * (SystemTimers::GetTicksPerSecond() / MC_TRANSFER_RATE_WRITE), et_transfer_complete, (u64)card_index);
-	// At the end of writing to a block flush to disk
-	// memory card blocks are always(?) written as a whole,
-	// but the dma calls are by page size (0x200) at a time
-	// just in case this is the last block that the game will be writing for a while
-	if (((address + _uSize) % BLOCK_SIZE) == 0)
-	{
-		INFO_LOG(EXPANSIONINTERFACE, "writing to block: %x", address / BLOCK_SIZE);
-		// Page written to memory card, not just to buffer - let's schedule a flush 0.5b cycles into the future (1 sec)
-		// But first we unschedule already scheduled flushes - no point in flushing once per page for a large write
-		// Scheduling event is mainly for raw memory cards as the flush the whole 16MB to disk
-		// Flushing the gci folder is free in comparison
-		CoreTiming::RemoveEvent(et_this_card);
-		CoreTiming::ScheduleEvent(500000000, et_this_card, (u64)card_index);
-	}
 }

Source/Core/Core/HW/EXI_DeviceMemoryCard.h

@@ -30,26 +30,21 @@ private:
 	// Scheduled when a command that required delayed end signaling is done.
 	static void CmdDoneCallback(u64 userdata, int cyclesLate);
 
+	// Scheduled when memory card is done transferring data
+	static void TransferCompleteCallback(u64 userdata, int cyclesLate);
+
 	// Flushes the memory card contents to disk.
 	void Flush(bool exiting = false);
 
 	// Signals that the command that was previously executed is now done.
 	void CmdDone();
 
+	// Signals that the transfer that was previously executed is now done.
+	void TransferComplete();
+
 	// Variant of CmdDone which schedules an event later in the future to complete the command.
 	void CmdDoneLater(u64 cycles);
 
-	// Memory card data layout
-	enum
-	{
-		MC_DATA_HEADER = 0x0000,
-		MC_DATA_DIRECTORY = 0x2000,
-		MC_DATA_DIRECTORYBACKUP = 0x4000,
-		MC_DATA_BLOCKALLOCMAP = 0x6000,
-		MC_DATA_BLOCKALLOCMAPBACKUP = 0x8000,
-		MC_DATA_FILES = 0xA000,
-	};
-
 	enum
 	{
 		cmdNintendoID       = 0x00,
@@ -70,7 +65,7 @@ private:
 	};
 
 	int card_index;
-	int et_this_card, et_cmd_done;
+	int et_this_card, et_cmd_done, et_transfer_complete;
 	//! memory card state
 
 	// STATE_TO_SAVE