207 lines
7.8 KiB
C++
207 lines
7.8 KiB
C++
// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
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// SPDX-License-Identifier: GPL-3.0-or-later
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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "common/settings.h"
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#include "core/core.h"
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#include "video_core/dma_pusher.h"
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#include "video_core/engines/maxwell_3d.h"
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#include "video_core/gpu.h"
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#include "video_core/guest_memory.h"
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#include "video_core/memory_manager.h"
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#include "video_core/rasterizer_interface.h"
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#include "video_core/texture_cache/util.h"
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namespace Tegra {
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constexpr u32 MacroRegistersStart = 0xE00;
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[[maybe_unused]] constexpr u32 ComputeInline = 0x6D;
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DmaPusher::DmaPusher(Core::System& system_, GPU& gpu_, MemoryManager& memory_manager_,
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Control::ChannelState& channel_state_)
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: gpu{gpu_}, system{system_}, memory_manager{memory_manager_}, puller{gpu_, memory_manager_,
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*this, channel_state_}, signal_sync{false}, synced{false} {}
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DmaPusher::~DmaPusher() = default;
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void DmaPusher::DispatchCalls() {
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dma_pushbuffer_subindex = 0;
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dma_state.is_last_call = true;
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while (system.IsPoweredOn()) {
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if (!Step()) {
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break;
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}
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}
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gpu.FlushCommands();
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gpu.OnCommandListEnd();
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}
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bool DmaPusher::Step() {
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if (!ib_enable || dma_pushbuffer.empty()) {
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return false;
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}
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CommandList& command_list = dma_pushbuffer.front();
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const size_t prefetch_size = command_list.prefetch_command_list.size();
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const size_t command_list_size = command_list.command_lists.size();
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if (prefetch_size == 0 && command_list_size == 0) {
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dma_pushbuffer.pop();
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dma_pushbuffer_subindex = 0;
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return true;
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}
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if (prefetch_size > 0) {
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ProcessCommands(command_list.prefetch_command_list);
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dma_pushbuffer.pop();
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return true;
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}
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auto& current_command = command_list.command_lists[dma_pushbuffer_subindex];
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const CommandListHeader& header = current_command;
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dma_state.dma_get = header.addr;
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if (signal_sync && !synced) {
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std::unique_lock lk(sync_mutex);
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sync_cv.wait(lk, [this]() { return synced; });
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signal_sync = false;
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synced = false;
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}
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if (header.size > 0 && dma_state.method >= MacroRegistersStart && subchannels[dma_state.subchannel]) {
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subchannels[dma_state.subchannel]->current_dirty = memory_manager.IsMemoryDirty(dma_state.dma_get, header.size * sizeof(u32));
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}
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if (header.size > 0) {
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if (Settings::IsDMALevelDefault() ? (Settings::IsGPULevelMedium() || Settings::IsGPULevelHigh()) : Settings::IsDMALevelSafe()) {
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Tegra::Memory::GpuGuestMemory<Tegra::CommandHeader, Tegra::Memory::GuestMemoryFlags::SafeRead>headers(memory_manager, dma_state.dma_get, header.size, &command_headers);
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ProcessCommands(headers);
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} else {
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Tegra::Memory::GpuGuestMemory<Tegra::CommandHeader, Tegra::Memory::GuestMemoryFlags::UnsafeRead>headers(memory_manager, dma_state.dma_get, header.size, &command_headers);
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ProcessCommands(headers);
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}
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}
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if (++dma_pushbuffer_subindex >= command_list_size) {
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dma_pushbuffer.pop();
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dma_pushbuffer_subindex = 0;
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} else {
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signal_sync = command_list.command_lists[dma_pushbuffer_subindex].sync && Settings::values.sync_memory_operations.GetValue();
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}
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if (signal_sync) {
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rasterizer->SignalFence([this]() {
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std::scoped_lock lk(sync_mutex);
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synced = true;
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sync_cv.notify_all();
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});
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}
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return true;
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}
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void DmaPusher::ProcessCommands(std::span<const CommandHeader> commands) {
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for (size_t index = 0; index < commands.size();) {
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// Data word of methods command
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if (dma_state.method_count && dma_state.non_incrementing) {
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auto const& command_header = commands[index]; //must ref (MUltiMethod re)
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dma_state.dma_word_offset = u32(index * sizeof(u32));
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const u32 max_write = u32(std::min<std::size_t>(index + dma_state.method_count, commands.size()) - index);
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CallMultiMethod(&command_header.argument, max_write);
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dma_state.method_count -= max_write;
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dma_state.is_last_call = true;
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index += max_write;
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} else if (dma_state.method_count) {
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auto const command_header = commands[index]; //can copy
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dma_state.dma_word_offset = u32(index * sizeof(u32));
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dma_state.is_last_call = dma_state.method_count <= 1;
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CallMethod(command_header.argument);
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dma_state.method += !dma_state.non_incrementing ? 1 : 0;
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dma_state.non_incrementing |= dma_increment_once;
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dma_state.method_count--;
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index++;
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} else {
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auto const command_header = commands[index]; //can copy
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// No command active - this is the first word of a new one
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switch (command_header.mode) {
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case SubmissionMode::Increasing:
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SetState(command_header);
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dma_state.non_incrementing = false;
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dma_increment_once = false;
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break;
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case SubmissionMode::NonIncreasing:
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SetState(command_header);
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dma_state.non_incrementing = true;
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dma_increment_once = false;
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break;
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case SubmissionMode::Inline:
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dma_state.method = command_header.method;
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dma_state.subchannel = command_header.subchannel;
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dma_state.dma_word_offset = u64(-s64(dma_state.dma_get)); // negate to set address as 0
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CallMethod(command_header.arg_count);
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dma_state.non_incrementing = true;
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dma_increment_once = false;
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break;
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case SubmissionMode::IncreaseOnce:
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SetState(command_header);
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dma_state.non_incrementing = false;
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dma_increment_once = true;
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break;
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default:
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break;
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}
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index++;
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}
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}
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}
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void DmaPusher::SetState(const CommandHeader& command_header) {
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dma_state.method = command_header.method;
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dma_state.subchannel = command_header.subchannel;
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dma_state.method_count = command_header.method_count;
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}
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void DmaPusher::CallMethod(u32 argument) const {
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if (dma_state.method < non_puller_methods) {
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puller.CallPullerMethod(Engines::Puller::MethodCall{
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dma_state.method,
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argument,
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dma_state.subchannel,
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dma_state.method_count,
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});
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} else {
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auto subchannel = subchannels[dma_state.subchannel];
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if (!subchannel->execution_mask[dma_state.method]) {
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subchannel->method_sink.emplace_back(dma_state.method, argument);
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} else {
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subchannel->ConsumeSink();
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subchannel->current_dma_segment = dma_state.dma_get + dma_state.dma_word_offset;
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subchannel->CallMethod(dma_state.method, argument, dma_state.is_last_call);
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}
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}
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}
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void DmaPusher::CallMultiMethod(const u32* base_start, u32 num_methods) const {
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if (dma_state.method < non_puller_methods) {
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puller.CallMultiMethod(dma_state.method, dma_state.subchannel, base_start, num_methods, dma_state.method_count);
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} else {
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auto subchannel = subchannels[dma_state.subchannel];
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subchannel->ConsumeSink();
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subchannel->current_dma_segment = dma_state.dma_get + dma_state.dma_word_offset;
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subchannel->CallMultiMethod(dma_state.method, base_start, num_methods, dma_state.method_count);
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}
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}
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void DmaPusher::BindRasterizer(VideoCore::RasterizerInterface* rasterizer_) {
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rasterizer = rasterizer_;
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puller.BindRasterizer(rasterizer);
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}
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} // namespace Tegra
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