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GPU: Store uploaded GPU macros and keep track of the number of method parameters.
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@ -24,12 +24,37 @@ namespace Tegra {
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enum class BufferMethods {
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BindObject = 0,
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SetGraphMacroCode = 0x45,
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SetGraphMacroCodeArg = 0x46,
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SetGraphMacroEntry = 0x47,
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CountBufferMethods = 0x100,
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};
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void GPU::WriteReg(u32 method, u32 subchannel, u32 value) {
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LOG_WARNING(HW_GPU, "Processing method %08X on subchannel %u value %08X", method, subchannel,
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value);
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void GPU::WriteReg(u32 method, u32 subchannel, u32 value, u32 remaining_params) {
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LOG_WARNING(HW_GPU, "Processing method %08X on subchannel %u value %08X remaining params %u",
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method, subchannel, value, remaining_params);
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if (method == static_cast<u32>(BufferMethods::SetGraphMacroEntry)) {
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// Prepare to upload a new macro, reset the upload counter.
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LOG_DEBUG(HW_GPU, "Uploading GPU macro %08X", value);
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current_macro_entry = value;
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current_macro_code.clear();
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return;
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}
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if (method == static_cast<u32>(BufferMethods::SetGraphMacroCodeArg)) {
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// Append a new code word to the current macro.
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current_macro_code.push_back(value);
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// There are no more params remaining, submit the code to the 3D engine.
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if (remaining_params == 0) {
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maxwell_3d->SubmitMacroCode(current_macro_entry, std::move(current_macro_code));
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current_macro_entry = InvalidGraphMacroEntry;
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current_macro_code.clear();
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}
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return;
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}
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if (method == static_cast<u32>(BufferMethods::BindObject)) {
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// Bind the current subchannel to the desired engine id.
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@ -54,7 +79,7 @@ void GPU::WriteReg(u32 method, u32 subchannel, u32 value) {
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fermi_2d->WriteReg(method, value);
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break;
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case EngineID::MAXWELL_B:
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maxwell_3d->WriteReg(method, value);
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maxwell_3d->WriteReg(method, value, remaining_params);
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break;
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case EngineID::MAXWELL_COMPUTE_B:
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maxwell_compute->WriteReg(method, value);
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@ -78,7 +103,8 @@ void GPU::ProcessCommandList(GPUVAddr address, u32 size) {
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case SubmissionMode::Increasing: {
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// Increase the method value with each argument.
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for (unsigned i = 0; i < header.arg_count; ++i) {
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WriteReg(header.method + i, header.subchannel, Memory::Read32(current_addr));
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WriteReg(header.method + i, header.subchannel, Memory::Read32(current_addr),
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header.arg_count - i - 1);
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current_addr += sizeof(u32);
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}
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break;
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@ -87,31 +113,31 @@ void GPU::ProcessCommandList(GPUVAddr address, u32 size) {
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case SubmissionMode::NonIncreasing: {
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// Use the same method value for all arguments.
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for (unsigned i = 0; i < header.arg_count; ++i) {
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WriteReg(header.method, header.subchannel, Memory::Read32(current_addr));
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WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
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header.arg_count - i - 1);
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current_addr += sizeof(u32);
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}
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break;
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}
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case SubmissionMode::IncreaseOnce: {
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ASSERT(header.arg_count.Value() >= 1);
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// Use the original method for the first argument and then the next method for all other
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// arguments.
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WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
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header.arg_count - 1);
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current_addr += sizeof(u32);
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// Process this command as a method call instead of a register write. Gather
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// all the parameters first and then pass them at once to the CallMethod function.
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std::vector<u32> parameters(header.arg_count);
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for (unsigned i = 0; i < header.arg_count; ++i) {
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parameters[i] = Memory::Read32(current_addr);
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for (unsigned i = 1; i < header.arg_count; ++i) {
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WriteReg(header.method + 1, header.subchannel, Memory::Read32(current_addr),
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header.arg_count - i - 1);
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current_addr += sizeof(u32);
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}
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CallMethod(header.method, header.subchannel, parameters);
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break;
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}
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case SubmissionMode::Inline: {
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// The register value is stored in the bits 16-28 as an immediate
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WriteReg(header.method, header.subchannel, header.inline_data);
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WriteReg(header.method, header.subchannel, header.inline_data, 0);
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break;
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}
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default:
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@ -17,14 +17,21 @@ const std::unordered_map<u32, Maxwell3D::MethodInfo> Maxwell3D::method_handlers
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Maxwell3D::Maxwell3D(MemoryManager& memory_manager) : memory_manager(memory_manager) {}
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void Maxwell3D::AttemptMethodCall(u32 method, const std::vector<u32>& parameters) {
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void Maxwell3D::SubmitMacroCode(u32 entry, std::vector<u32> code) {
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uploaded_macros[entry * 2 + MacroRegistersStart] = std::move(code);
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}
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void Maxwell3D::CallMacroMethod(u32 method, const std::vector<u32>& parameters) {
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// TODO(Subv): Write an interpreter for the macros uploaded via registers 0x45 and 0x47
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// The requested macro must have been uploaded already.
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ASSERT_MSG(uploaded_macros.find(method) != uploaded_macros.end(), "Macro %08X was not uploaded",
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method);
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auto itr = method_handlers.find(method);
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ASSERT_MSG(itr != method_handlers.end(), "Unhandled method call %08X", method);
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// Only execute the macro handler once we've been fed the expected number of parameters.
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if (itr->second.arguments != parameters.size())
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return;
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ASSERT(itr->second.arguments == parameters.size());
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(this->*itr->second.handler)(parameters);
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@ -33,7 +40,7 @@ void Maxwell3D::AttemptMethodCall(u32 method, const std::vector<u32>& parameters
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macro_params.clear();
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}
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void Maxwell3D::WriteReg(u32 method, u32 value) {
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void Maxwell3D::WriteReg(u32 method, u32 value, u32 remaining_params) {
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ASSERT_MSG(method < Regs::NUM_REGS,
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"Invalid Maxwell3D register, increase the size of the Regs structure");
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@ -56,8 +63,10 @@ void Maxwell3D::WriteReg(u32 method, u32 value) {
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macro_params.push_back(value);
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// Try to call the macro with the current number of parameters.
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AttemptMethodCall(executing_macro, macro_params);
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// Call the macro when there are no more parameters in the command buffer
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if (remaining_params == 0) {
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CallMacroMethod(executing_macro, macro_params);
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}
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return;
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}
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@ -21,7 +21,10 @@ public:
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~Maxwell3D() = default;
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/// Write the value to the register identified by method.
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void WriteReg(u32 method, u32 value);
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void WriteReg(u32 method, u32 value, u32 remaining_params);
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/// Uploads the code for a GPU macro program associated with the specified entry.
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void SubmitMacroCode(u32 entry, std::vector<u32> code);
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/// Register structure of the Maxwell3D engine.
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/// TODO(Subv): This structure will need to be made bigger as more registers are discovered.
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@ -198,18 +201,19 @@ public:
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private:
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MemoryManager& memory_manager;
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std::unordered_map<u32, std::vector<u32>> uploaded_macros;
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/// Macro method that is currently being executed / being fed parameters.
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u32 executing_macro = 0;
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/// Parameters that have been submitted to the macro call so far.
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std::vector<u32> macro_params;
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/**
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* Attempts a method call to this engine. Will return without doing anything if the number of
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* parameters doesn't match what is expected for the method.
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* Call a macro on this engine.
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* @param method Method to call
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* @param parameters Arguments to the method call
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*/
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void AttemptMethodCall(u32 method, const std::vector<u32>& parameters);
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void CallMacroMethod(u32 method, const std::vector<u32>& parameters);
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/// Handles a write to the QUERY_GET register.
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void ProcessQueryGet();
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@ -6,6 +6,7 @@
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#include <memory>
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#include <unordered_map>
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#include <vector>
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#include "common/common_types.h"
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#include "video_core/engines/fermi_2d.h"
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#include "video_core/engines/maxwell_3d.h"
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@ -38,8 +39,10 @@ public:
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std::unique_ptr<MemoryManager> memory_manager;
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private:
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static constexpr u32 InvalidGraphMacroEntry = 0xFFFFFFFF;
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/// Writes a single register in the engine bound to the specified subchannel
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void WriteReg(u32 method, u32 subchannel, u32 value);
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void WriteReg(u32 method, u32 subchannel, u32 value, u32 remaining_params);
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/// Mapping of command subchannels to their bound engine ids.
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std::unordered_map<u32, EngineID> bound_engines;
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@ -50,6 +53,11 @@ private:
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std::unique_ptr<Engines::Fermi2D> fermi_2d;
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/// Compute engine
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std::unique_ptr<Engines::MaxwellCompute> maxwell_compute;
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/// Entry of the macro that is currently being uploaded
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u32 current_macro_entry = InvalidGraphMacroEntry;
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/// Code being uploaded for the current macro
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std::vector<u32> current_macro_code;
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};
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} // namespace Tegra
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