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Implement GPFIFO semaphore acquire operations

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This commit is contained in:
Billy Laws 2022-10-30 16:37:37 +00:00
parent 2ce146e28f
commit 270ef3e0d2
1 changed files with 64 additions and 41 deletions
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105
app/src/main/cpp/skyline/soc/gm20b/engines/gpfifo.cpp
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@ -41,49 +41,72 @@ namespace skyline::soc::gm20b::engine {
channelCtx.asCtx->gmmu.Write(address + 8, GetGpuTimeTicks());
}
if (action.operation == Registers::Semaphore::Operation::Release) {
channelCtx.asCtx->gmmu.Write(address, registers.semaphore->payload);
Logger::Debug("SemaphoreRelease: address: 0x{:X} payload: {}", address, registers.semaphore->payload);
} else if (action.operation == Registers::Semaphore::Operation::Reduction) {
u32 origVal{channelCtx.asCtx->gmmu.Read<u32>(address)};
bool isSigned{action.format == Registers::Semaphore::Format::Signed};
switch (action.operation) {
case Registers::Semaphore::Operation::Acquire:
Logger::Debug("Acquire semaphore: 0x{:X} payload: {}", address, registers.semaphore->payload);
channelCtx.Unlock();
// https://github.com/NVIDIA/open-gpu-doc/blob/b7d1bd16fe62135ebaec306b39dfdbd9e5657827/manuals/turing/tu104/dev_pbdma.ref.txt#L3549
u32 val{[](Registers::Semaphore::Reduction reduction, u32 origVal, u32 payload, bool isSigned) {
switch (reduction) {
case Registers::Semaphore::Reduction::Min:
if (isSigned)
return static_cast<u32>(std::min(static_cast<i32>(origVal), static_cast<i32>(payload)));
else
return std::min(origVal, payload);
case Registers::Semaphore::Reduction::Max:
if (isSigned)
return static_cast<u32>(std::max(static_cast<i32>(origVal), static_cast<i32>(payload)));
else
return std::max(origVal, payload);
case Registers::Semaphore::Reduction::Xor:
return origVal ^ payload;
case Registers::Semaphore::Reduction::And:
return origVal & payload;
case Registers::Semaphore::Reduction::Or:
return origVal | payload;
case Registers::Semaphore::Reduction::Add:
if (isSigned)
return static_cast<u32>(static_cast<i32>(origVal) + static_cast<i32>(payload));
else
return origVal + payload;
case Registers::Semaphore::Reduction::Inc:
return (origVal >= payload) ? 0 : origVal + 1;
case Registers::Semaphore::Reduction::Dec:
return (origVal == 0 || origVal > payload) ? payload : origVal - 1;
}
}(registers.semaphore->action.reduction, origVal, registers.semaphore->payload, isSigned)};
Logger::Debug("SemaphoreReduction: address: 0x{:X} op: {} payload: {} original value: {} reduced value: {}",
address, static_cast<u8>(registers.semaphore->action.reduction), registers.semaphore->payload, origVal, val);
while (channelCtx.asCtx->gmmu.Read<u32>(address) != registers.semaphore->payload)
std::this_thread::yield();
channelCtx.asCtx->gmmu.Write(address, val);
} else {
Logger::Warn("Unimplemented semaphore operation: 0x{:X}", static_cast<u8>(registers.semaphore->action.operation));
channelCtx.Lock();
break;
case Registers::Semaphore::Operation::Release:
channelCtx.asCtx->gmmu.Write(address, registers.semaphore->payload);
Logger::Debug("SemaphoreRelease: address: 0x{:X} payload: {}", address, registers.semaphore->payload);
break;
case Registers::Semaphore::Operation::AcqGeq :
Logger::Debug("Acquire semaphore: 0x{:X} payload: {}", address, registers.semaphore->payload);
channelCtx.Unlock();
while (channelCtx.asCtx->gmmu.Read<u32>(address) < registers.semaphore->payload)
std::this_thread::yield();
channelCtx.Lock();
break;
case Registers::Semaphore::Operation::Reduction: {
u32 origVal{channelCtx.asCtx->gmmu.Read<u32>(address)};
bool isSigned{action.format == Registers::Semaphore::Format::Signed};
// https://github.com/NVIDIA/open-gpu-doc/blob/b7d1bd16fe62135ebaec306b39dfdbd9e5657827/manuals/turing/tu104/dev_pbdma.ref.txt#L3549
u32 val{[](Registers::Semaphore::Reduction reduction, u32 origVal, u32 payload, bool isSigned) {
switch (reduction) {
case Registers::Semaphore::Reduction::Min:
if (isSigned)
return static_cast<u32>(std::min(static_cast<i32>(origVal), static_cast<i32>(payload)));
else
return std::min(origVal, payload);
case Registers::Semaphore::Reduction::Max:
if (isSigned)
return static_cast<u32>(std::max(static_cast<i32>(origVal), static_cast<i32>(payload)));
else
return std::max(origVal, payload);
case Registers::Semaphore::Reduction::Xor:
return origVal ^ payload;
case Registers::Semaphore::Reduction::And:
return origVal & payload;
case Registers::Semaphore::Reduction::Or:
return origVal | payload;
case Registers::Semaphore::Reduction::Add:
if (isSigned)
return static_cast<u32>(static_cast<i32>(origVal) + static_cast<i32>(payload));
else
return origVal + payload;
case Registers::Semaphore::Reduction::Inc:
return (origVal >= payload) ? 0 : origVal + 1;
case Registers::Semaphore::Reduction::Dec:
return (origVal == 0 || origVal > payload) ? payload : origVal - 1;
}
}(registers.semaphore->action.reduction, origVal, registers.semaphore->payload, isSigned)};
Logger::Debug("SemaphoreReduction: address: 0x{:X} op: {} payload: {} original value: {} reduced value: {}",
address, static_cast<u8>(registers.semaphore->action.reduction), registers.semaphore->payload, origVal, val);
channelCtx.asCtx->gmmu.Write(address, val);
break;
}
default:
Logger::Warn("Unimplemented semaphore operation: 0x{:X}", static_cast<u8>(registers.semaphore->action.operation));
break;
}
})
}