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Exzap 2022-08-22 22:21:23 +02:00
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119
src/Cafe/OS/libs/dmae/dmae.cpp Normal file
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#include "Cafe/OS/common/OSCommon.h"
#include "Cafe/OS/libs/coreinit/coreinit_Time.h"
#include "Cafe/HW/Latte/Core/LatteBufferCache.h"
#define DMAE_ENDIAN_NONE 0
#define DMAE_ENDIAN_16 1
#define DMAE_ENDIAN_32 2
#define DMAE_ENDIAN_64 3
uint64 dmaeRetiredTimestamp = 0;
uint64 dmae_getTimestamp()
{
return coreinit::coreinit_getTimerTick();
}
void dmae_setRetiredTimestamp(uint64 timestamp)
{
dmaeRetiredTimestamp = timestamp;
}
void dmaeExport_DMAECopyMem(PPCInterpreter_t* hCPU)
{
if( hCPU->gpr[6] == DMAE_ENDIAN_NONE )
{
// don't change endianness
memcpy(memory_getPointerFromVirtualOffset(hCPU->gpr[3]), memory_getPointerFromVirtualOffset(hCPU->gpr[4]), hCPU->gpr[5]*4);
}
else if( hCPU->gpr[6] == DMAE_ENDIAN_32 )
{
// swap per uint32
uint32* srcBuffer = (uint32*)memory_getPointerFromVirtualOffset(hCPU->gpr[4]);
uint32* dstBuffer = (uint32*)memory_getPointerFromVirtualOffset(hCPU->gpr[3]);
for(uint32 i=0; i<hCPU->gpr[5]; i++)
{
dstBuffer[i] = _swapEndianU32(srcBuffer[i]);
}
}
else
{
cemuLog_logDebug(LogType::Force, "DMAECopyMem(): Unsupported endian swap\n");
}
uint64 dmaeTimestamp = dmae_getTimestamp();
dmae_setRetiredTimestamp(dmaeTimestamp);
if(hCPU->gpr[5] > 0)
LatteBufferCache_notifyDCFlush(hCPU->gpr[3], hCPU->gpr[5]*4);
osLib_returnFromFunction64(hCPU, dmaeTimestamp);
}
void dmaeExport_DMAEFillMem(PPCInterpreter_t* hCPU)
{
uint32* dstBuffer = (uint32*)memory_getPointerFromVirtualOffset(hCPU->gpr[3]);
uint32 value = hCPU->gpr[4];
uint32 numU32s = hCPU->gpr[5];
value = _swapEndianU32(value);
for(uint32 i=0; i<numU32s; i++)
{
*dstBuffer = value;
dstBuffer++;
}
uint64 dmaeTimestamp = dmae_getTimestamp();
dmae_setRetiredTimestamp(dmaeTimestamp);
osLib_returnFromFunction64(hCPU, dmaeTimestamp);
}
void dmaeExport_DMAEWaitDone(PPCInterpreter_t* hCPU)
{
//debug_printf("DMAEWaitDone(...)\n");
// parameter:
// r3/r4 uint64 dmaeTimestamp
osLib_returnFromFunction(hCPU, 1);
}
void dmaeExport_DMAESemaphore(PPCInterpreter_t* hCPU)
{
// parameter:
// r3 MPTR addr
// r4 uint32 actionType
uint32 actionType = hCPU->gpr[4];
std::atomic<uint64le>* semaphore = _rawPtrToAtomic((uint64le*)memory_getPointerFromVirtualOffset(hCPU->gpr[3]));
if( actionType == 1 )
{
// Signal Semaphore
semaphore->fetch_add(1);
}
else if (actionType == 0) // wait
{
forceLogDebug_printf("DMAESemaphore: Unsupported wait operation");
semaphore->fetch_sub(1);
}
else
{
forceLogDebug_printf("DMAESemaphore unknown action type %d", actionType);
cemu_assert_debug(false);
}
uint64 dmaeTimestamp = dmae_getTimestamp();
dmae_setRetiredTimestamp(dmaeTimestamp);
osLib_returnFromFunction64(hCPU, dmaeTimestamp);
}
void dmaeExport_DMAEGetRetiredTimeStamp(PPCInterpreter_t* hCPU)
{
debug_printf("DMAEGetRetiredTimeStamp()\n");
osLib_returnFromFunction64(hCPU, dmaeRetiredTimestamp);
}
void dmae_load()
{
osLib_addFunction("dmae", "DMAECopyMem", dmaeExport_DMAECopyMem);
osLib_addFunction("dmae", "DMAEFillMem", dmaeExport_DMAEFillMem);
osLib_addFunction("dmae", "DMAEWaitDone", dmaeExport_DMAEWaitDone);
osLib_addFunction("dmae", "DMAESemaphore", dmaeExport_DMAESemaphore);
osLib_addFunction("dmae", "DMAEGetRetiredTimeStamp", dmaeExport_DMAEGetRetiredTimeStamp);
}