mirror of
https://github.com/skyline-emu/skyline.git
synced 2024-12-23 17:01:49 +01:00
Drop 3D engine method calling fast path in GPFIFO
This ended up actually turning out to be a slow path when Maxwell 3D method handling code was inlined.
This commit is contained in:
Billy Laws
parent
ded02e3eac
commit
d810619203
@ -6,8 +6,7 @@
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#include <kernel/types/KProcess.h>
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#include <soc.h>
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#include <os.h>
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#include "engines/maxwell_3d.h"
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#include "engines/fermi_2d.h"
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#include "channel.h"
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namespace skyline::soc::gm20b {
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/**
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@ -95,7 +94,7 @@ namespace skyline::soc::gm20b {
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} else {
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switch (subChannel) {
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case SubchannelId::ThreeD:
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channelCtx.maxwell3D->HandleMacroCall(method - engine::EngineMethodsEnd, argument, lastCall);
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channelCtx.maxwell3D.HandleMacroCall(method - engine::EngineMethodsEnd, argument, lastCall);
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break;
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case SubchannelId::TwoD:
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channelCtx.fermi2D.HandleMacroCall(method - engine::EngineMethodsEnd, argument, lastCall);
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@ -108,9 +107,14 @@ namespace skyline::soc::gm20b {
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}
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void ChannelGpfifo::SendPure(u32 method, u32 argument, SubchannelId subChannel) {
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if (subChannel == SubchannelId::ThreeD) [[likely]] {
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channelCtx.maxwell3D.CallMethod(method, argument);
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return;
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}
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switch (subChannel) {
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case SubchannelId::ThreeD:
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channelCtx.maxwell3D->CallMethod(method, argument);
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channelCtx.maxwell3D.CallMethod(method, argument);
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break;
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case SubchannelId::Compute:
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channelCtx.keplerCompute.CallMethod(method, argument);
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@ -132,7 +136,7 @@ namespace skyline::soc::gm20b {
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void ChannelGpfifo::SendPureBatchNonInc(u32 method, span<u32> arguments, SubchannelId subChannel) {
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switch (subChannel) {
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case SubchannelId::ThreeD:
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channelCtx.maxwell3D->CallMethodBatchNonInc(method, arguments);
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channelCtx.maxwell3D.CallMethodBatchNonInc(method, arguments);
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break;
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case SubchannelId::Compute:
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channelCtx.keplerCompute.CallMethodBatchNonInc(method, arguments);
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@ -237,62 +241,46 @@ namespace skyline::soc::gm20b {
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/**
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* @brief Handles execution of a specific method type as specified by the State template parameter
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* @tparam ThreeDOnly Whether to skip subchannel method handling and send all method calls to the 3D engine
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*/
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auto dispatchCalls{[&]<bool ThreeDOnly, MethodResumeState::State State> () {
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auto dispatchCalls{[&]<MethodResumeState::State State> () {
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/**
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* @brief Gets the offset to apply to the method address for a given dispatch loop index
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*/
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auto methodOffset{[] (u32 i) -> u32 {
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switch (State) {
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case MethodResumeState::State::Inc:
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return i;
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case MethodResumeState::State::OneInc:
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return i ? 1 : 0;
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case MethodResumeState::State::NonInc:
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return 0;
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}
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if constexpr(State == MethodResumeState::State::Inc)
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return i;
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else if constexpr (State == MethodResumeState::State::OneInc)
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return i ? 1 : 0;
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else
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return 0;
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}};
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constexpr u32 BatchCutoff{4}; //!< Cutoff needed to send method calls in a batch which is espcially important for UBO updates. This helps to avoid the extra overhead batching for small packets.
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// TODO: Only batch for specific target methods like UBO updates, since normal dispatch is generally cheaper
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if (remainingEntries >= methodHeader.methodCount) {
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if (remainingEntries >= methodHeader.methodCount) { [[likely]]
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if (methodHeader.Pure()) [[likely]] {
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if constexpr (State == MethodResumeState::State::NonInc) {
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// For pure noninc methods we can send all method calls as a span in one go
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if (methodHeader.methodCount > BatchCutoff) {
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if constexpr (ThreeDOnly)
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channelCtx.maxwell3D->CallMethodBatchNonInc(methodHeader.methodAddress, span<u32>(&(*++entry), methodHeader.methodCount));
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else
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SendPureBatchNonInc(methodHeader.methodAddress, span(&(*++entry), methodHeader.methodCount), methodHeader.methodSubChannel);
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if (methodHeader.methodCount > BatchCutoff) [[unlikely]] {
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SendPureBatchNonInc(methodHeader.methodAddress, span(&(*++entry), methodHeader.methodCount), methodHeader.methodSubChannel);
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entry += methodHeader.methodCount - 1;
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return false;
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}
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} else if constexpr (State == MethodResumeState::State::OneInc) {
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// For pure oneinc methods we can send the initial method then send the rest as a span in one go
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if (methodHeader.methodCount > (BatchCutoff + 1)) {
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if constexpr (ThreeDOnly) {
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channelCtx.maxwell3D->CallMethod(methodHeader.methodAddress, *++entry);
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channelCtx.maxwell3D->CallMethodBatchNonInc(methodHeader.methodAddress + 1, span(&(*++entry), methodHeader.methodCount - 1));
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} else {
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SendPure(methodHeader.methodAddress, *++entry, methodHeader.methodSubChannel);
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SendPureBatchNonInc(methodHeader.methodAddress + 1, span(&(*++entry) ,methodHeader.methodCount - 1), methodHeader.methodSubChannel);
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}
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if (methodHeader.methodCount > (BatchCutoff + 1)) [[unlikely]] {
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SendPure(methodHeader.methodAddress, *++entry, methodHeader.methodSubChannel);
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SendPureBatchNonInc(methodHeader.methodAddress + 1, span(&(*++entry) ,methodHeader.methodCount - 1), methodHeader.methodSubChannel);
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entry += methodHeader.methodCount - 2;
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return false;
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}
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}
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for (u32 i{}; i < methodHeader.methodCount; i++) {
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if constexpr (ThreeDOnly) {
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channelCtx.maxwell3D->CallMethod(methodHeader.methodAddress + methodOffset(i), *++entry);
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} else {
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SendPure(methodHeader.methodAddress + methodOffset(i), *++entry, methodHeader.methodSubChannel);
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}
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}
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for (u32 i{}; i < methodHeader.methodCount; i++)
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SendPure(methodHeader.methodAddress + methodOffset(i), *++entry, methodHeader.methodSubChannel);
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} else {
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// Slow path for methods that touch GPFIFO or macros
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for (u32 i{}; i < methodHeader.methodCount; i++)
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@ -308,26 +296,22 @@ namespace skyline::soc::gm20b {
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/**
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* @brief Handles execution of a single method
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* @tparam ThreeDOnly Whether to skip subchannel method handling and send all method calls to the 3D engine
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* @return If the this was the final method in the current GpEntry
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*/
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auto processMethod{[&] <bool ThreeDOnly> () -> bool {
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auto processMethod{[&] () -> bool {
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switch (methodHeader.secOp) {
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case PushBufferMethodHeader::SecOp::IncMethod:
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return dispatchCalls.operator()<ThreeDOnly, MethodResumeState::State::Inc>();
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return dispatchCalls.operator()<MethodResumeState::State::Inc>();
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case PushBufferMethodHeader::SecOp::NonIncMethod:
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return dispatchCalls.operator()<ThreeDOnly, MethodResumeState::State::NonInc>();
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return dispatchCalls.operator()<MethodResumeState::State::NonInc>();
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case PushBufferMethodHeader::SecOp::OneInc:
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return dispatchCalls.operator()<ThreeDOnly, MethodResumeState::State::OneInc>();
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return dispatchCalls.operator()<MethodResumeState::State::OneInc>();
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case PushBufferMethodHeader::SecOp::ImmdDataMethod:
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if (methodHeader.Pure()) {
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if constexpr (ThreeDOnly)
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channelCtx.maxwell3D->CallMethod(methodHeader.methodAddress, methodHeader.immdData);
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else
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SendPure(methodHeader.methodAddress, methodHeader.immdData, methodHeader.methodSubChannel);
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} else {
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if (methodHeader.Pure())
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SendPure(methodHeader.methodAddress, methodHeader.immdData, methodHeader.methodSubChannel);
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else
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SendFull(methodHeader.methodAddress, methodHeader.immdData, methodHeader.methodSubChannel, true);
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}
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return false;
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case PushBufferMethodHeader::SecOp::EndPbSegment:
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return true;
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@ -337,12 +321,9 @@ namespace skyline::soc::gm20b {
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}};
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bool hitEnd{[&]() {
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if (methodHeader.methodSubChannel == SubchannelId::ThreeD) { [[likely]]
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return processMethod.operator()<true>();
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} else {
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channelCtx.maxwell3D->FlushEngineState(); // Flush the 3D engine state when doing any calls to other engines
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return processMethod.operator()<false>();
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}
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if (methodHeader.methodSubChannel != SubchannelId::ThreeD) [[unlikely]]
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channelCtx.maxwell3D.FlushEngineState(); // Flush the 3D engine state when doing any calls to other engines
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return processMethod();
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}()};
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if (hitEnd)
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