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Merge pull request #6597 from FernandoS27/accelerate-dma 

DMAEngine: Introduce Accelerate DMA.
This commit is contained in:
Ameer J 2021-07-12 12:49:11 -04:00 committed by GitHub
parent 7059bb2bf8 bc19d28963
commit 776f391ff6
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GPG Key ID: 4AEE18F83AFDEB23
9 changed files with 199 additions and 62 deletions
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150
src/video_core/buffer_cache/buffer_cache.h
View File

@ -164,6 +164,8 @@ public:
/// Pop asynchronous downloads
void PopAsyncFlushes();
[[nodiscard]] bool DMACopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount);
/// Return true when a CPU region is modified from the GPU
[[nodiscard]] bool IsRegionGpuModified(VAddr addr, size_t size);
@ -200,6 +202,36 @@ private:
}
}
template <typename Func>
void ForEachWrittenRange(VAddr cpu_addr, u64 size, Func&& func) {
const VAddr start_address = cpu_addr;
const VAddr end_address = start_address + size;
const VAddr search_base =
static_cast<VAddr>(std::min<s64>(0LL, static_cast<s64>(start_address - size)));
const IntervalType search_interval{search_base, search_base + 1};
auto it = common_ranges.lower_bound(search_interval);
if (it == common_ranges.end()) {
it = common_ranges.begin();
}
for (; it != common_ranges.end(); it++) {
VAddr inter_addr_end = it->upper();
VAddr inter_addr = it->lower();
if (inter_addr >= end_address) {
break;
}
if (inter_addr_end <= start_address) {
continue;
}
if (inter_addr_end > end_address) {
inter_addr_end = end_address;
}
if (inter_addr < start_address) {
inter_addr = start_address;
}
func(inter_addr, inter_addr_end);
}
}
static bool IsRangeGranular(VAddr cpu_addr, size_t size) {
return (cpu_addr & ~Core::Memory::PAGE_MASK) ==
((cpu_addr + size) & ~Core::Memory::PAGE_MASK);
@ -430,6 +462,68 @@ void BufferCache<P>::DownloadMemory(VAddr cpu_addr, u64 size) {
});
}
template <class P>
bool BufferCache<P>::DMACopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) {
const std::optional<VAddr> cpu_src_address = gpu_memory.GpuToCpuAddress(src_address);
const std::optional<VAddr> cpu_dest_address = gpu_memory.GpuToCpuAddress(dest_address);
if (!cpu_src_address || !cpu_dest_address) {
return false;
}
const bool source_dirty = IsRegionGpuModified(*cpu_src_address, amount);
const bool dest_dirty = IsRegionGpuModified(*cpu_dest_address, amount);
if (!source_dirty && !dest_dirty) {
return false;
}
const IntervalType subtract_interval{*cpu_dest_address, *cpu_dest_address + amount};
uncommitted_ranges.subtract(subtract_interval);
for (auto& interval_set : committed_ranges) {
interval_set.subtract(subtract_interval);
}
BufferId buffer_a;
BufferId buffer_b;
do {
has_deleted_buffers = false;
buffer_a = FindBuffer(*cpu_src_address, static_cast<u32>(amount));
buffer_b = FindBuffer(*cpu_dest_address, static_cast<u32>(amount));
} while (has_deleted_buffers);
auto& src_buffer = slot_buffers[buffer_a];
auto& dest_buffer = slot_buffers[buffer_b];
SynchronizeBuffer(src_buffer, *cpu_src_address, static_cast<u32>(amount));
SynchronizeBuffer(dest_buffer, *cpu_dest_address, static_cast<u32>(amount));
std::array copies{BufferCopy{
.src_offset = src_buffer.Offset(*cpu_src_address),
.dst_offset = dest_buffer.Offset(*cpu_dest_address),
.size = amount,
}};
boost::container::small_vector<IntervalType, 4> tmp_intervals;
auto mirror = [&](VAddr base_address, VAddr base_address_end) {
const u64 size = base_address_end - base_address;
const VAddr diff = base_address - *cpu_src_address;
const VAddr new_base_address = *cpu_dest_address + diff;
const IntervalType add_interval{new_base_address, new_base_address + size};
uncommitted_ranges.add(add_interval);
tmp_intervals.push_back(add_interval);
};
ForEachWrittenRange(*cpu_src_address, amount, mirror);
// This subtraction in this order is important for overlapping copies.
common_ranges.subtract(subtract_interval);
for (const IntervalType add_interval : tmp_intervals) {
common_ranges.add(add_interval);
}
runtime.CopyBuffer(dest_buffer, src_buffer, copies);
if (source_dirty) {
dest_buffer.MarkRegionAsGpuModified(*cpu_dest_address, amount);
}
std::vector<u8> tmp_buffer(amount);
cpu_memory.ReadBlockUnsafe(*cpu_src_address, tmp_buffer.data(), amount);
cpu_memory.WriteBlockUnsafe(*cpu_dest_address, tmp_buffer.data(), amount);
return true;
}
template <class P>
void BufferCache<P>::BindGraphicsUniformBuffer(size_t stage, u32 index, GPUVAddr gpu_addr,
u32 size) {
@ -616,30 +710,7 @@ void BufferCache<P>::CommitAsyncFlushesHigh() {
const VAddr start_address = buffer_addr + range_offset;
const VAddr end_address = start_address + range_size;
const IntervalType search_interval{cpu_addr, 1};
auto it = common_ranges.lower_bound(search_interval);
if (it == common_ranges.end()) {
it = common_ranges.begin();
}
while (it != common_ranges.end()) {
VAddr inter_addr_end = it->upper();
VAddr inter_addr = it->lower();
if (inter_addr >= end_address) {
break;
}
if (inter_addr_end <= start_address) {
it++;
continue;
}
if (inter_addr_end > end_address) {
inter_addr_end = end_address;
}
if (inter_addr < start_address) {
inter_addr = start_address;
}
add_download(inter_addr, inter_addr_end);
it++;
}
ForEachWrittenRange(start_address, range_size, add_download);
const IntervalType subtract_interval{start_address, end_address};
common_ranges.subtract(subtract_interval);
});
@ -737,7 +808,9 @@ void BufferCache<P>::BindHostIndexBuffer() {
const u32 size = index_buffer.size;
SynchronizeBuffer(buffer, index_buffer.cpu_addr, size);
if constexpr (HAS_FULL_INDEX_AND_PRIMITIVE_SUPPORT) {
runtime.BindIndexBuffer(buffer, offset, size);
const u32 new_offset = offset + maxwell3d.regs.index_array.first *
maxwell3d.regs.index_array.FormatSizeInBytes();
runtime.BindIndexBuffer(buffer, new_offset, size);
} else {
runtime.BindIndexBuffer(maxwell3d.regs.draw.topology, maxwell3d.regs.index_array.format,
maxwell3d.regs.index_array.first, maxwell3d.regs.index_array.count,
@ -951,7 +1024,7 @@ void BufferCache<P>::UpdateIndexBuffer() {
const GPUVAddr gpu_addr_end = index_array.EndAddress();
const std::optional<VAddr> cpu_addr = gpu_memory.GpuToCpuAddress(gpu_addr_begin);
const u32 address_size = static_cast<u32>(gpu_addr_end - gpu_addr_begin);
const u32 draw_size = index_array.count * index_array.FormatSizeInBytes();
const u32 draw_size = (index_array.count + index_array.first) * index_array.FormatSizeInBytes();
const u32 size = std::min(address_size, draw_size);
if (size == 0 || !cpu_addr) {
index_buffer = NULL_BINDING;
@ -1350,30 +1423,7 @@ void BufferCache<P>::DownloadBufferMemory(Buffer& buffer, VAddr cpu_addr, u64 si
const VAddr start_address = buffer_addr + range_offset;
const VAddr end_address = start_address + range_size;
const IntervalType search_interval{start_address - range_size, 1};
auto it = common_ranges.lower_bound(search_interval);
if (it == common_ranges.end()) {
it = common_ranges.begin();
}
while (it != common_ranges.end()) {
VAddr inter_addr_end = it->upper();
VAddr inter_addr = it->lower();
if (inter_addr >= end_address) {
break;
}
if (inter_addr_end <= start_address) {
it++;
continue;
}
if (inter_addr_end > end_address) {
inter_addr_end = end_address;
}
if (inter_addr < start_address) {
inter_addr = start_address;
}
add_download(inter_addr, inter_addr_end);
it++;
}
ForEachWrittenRange(start_address, range_size, add_download);
const IntervalType subtract_interval{start_address, end_address};
common_ranges.subtract(subtract_interval);
});

36
src/video_core/engines/maxwell_dma.cpp
View File

@ -21,6 +21,10 @@ MaxwellDMA::MaxwellDMA(Core::System& system_, MemoryManager& memory_manager_)
MaxwellDMA::~MaxwellDMA() = default;
void MaxwellDMA::BindRasterizer(VideoCore::RasterizerInterface* rasterizer_) {
rasterizer = rasterizer_;
}
void MaxwellDMA::CallMethod(u32 method, u32 method_argument, bool is_last_call) {
ASSERT_MSG(method < NUM_REGS, "Invalid MaxwellDMA register");
@ -44,7 +48,6 @@ void MaxwellDMA::Launch() {
// TODO(Subv): Perform more research and implement all features of this engine.
const LaunchDMA& launch = regs.launch_dma;
ASSERT(launch.remap_enable == 0);
ASSERT(launch.semaphore_type == LaunchDMA::SemaphoreType::NONE);
ASSERT(launch.interrupt_type == LaunchDMA::InterruptType::NONE);
ASSERT(launch.data_transfer_type == LaunchDMA::DataTransferType::NON_PIPELINED);
@ -77,11 +80,29 @@ void MaxwellDMA::CopyPitchToPitch() {
// When `multi_line_enable` bit is disabled the copy is performed as if we were copying a 1D
// buffer of length `line_length_in`.
// Otherwise we copy a 2D image of dimensions (line_length_in, line_count).
auto& accelerate = rasterizer->AccessAccelerateDMA();
if (!regs.launch_dma.multi_line_enable) {
memory_manager.CopyBlock(regs.offset_out, regs.offset_in, regs.line_length_in);
const bool is_buffer_clear = regs.launch_dma.remap_enable != 0 &&
regs.remap_const.dst_x == RemapConst::Swizzle::CONST_A;
// TODO: allow multisized components.
if (is_buffer_clear) {
ASSERT(regs.remap_const.component_size_minus_one == 3);
std::vector<u32> tmp_buffer(regs.line_length_in, regs.remap_consta_value);
memory_manager.WriteBlock(regs.offset_out, reinterpret_cast<u8*>(tmp_buffer.data()),
regs.line_length_in * sizeof(u32));
return;
}
UNIMPLEMENTED_IF(regs.launch_dma.remap_enable != 0);
if (!accelerate.BufferCopy(regs.offset_in, regs.offset_out, regs.line_length_in)) {
std::vector<u8> tmp_buffer(regs.line_length_in);
memory_manager.ReadBlockUnsafe(regs.offset_in, tmp_buffer.data(), regs.line_length_in);
memory_manager.WriteBlock(regs.offset_out, tmp_buffer.data(), regs.line_length_in);
}
return;
}
UNIMPLEMENTED_IF(regs.launch_dma.remap_enable != 0);
// Perform a line-by-line copy.
// We're going to take a subrect of size (line_length_in, line_count) from the source rectangle.
// There is no need to manually flush/invalidate the regions because CopyBlock does that for us.
@ -105,6 +126,7 @@ void MaxwellDMA::CopyBlockLinearToPitch() {
}
// Deswizzle the input and copy it over.
UNIMPLEMENTED_IF(regs.launch_dma.remap_enable != 0);
const u32 bytes_per_pixel = regs.pitch_out / regs.line_length_in;
const Parameters& src_params = regs.src_params;
const u32 width = src_params.width;
@ -134,6 +156,7 @@ void MaxwellDMA::CopyBlockLinearToPitch() {
void MaxwellDMA::CopyPitchToBlockLinear() {
UNIMPLEMENTED_IF_MSG(regs.dst_params.block_size.width != 0, "Block width is not one");
UNIMPLEMENTED_IF(regs.launch_dma.remap_enable != 0);
const auto& dst_params = regs.dst_params;
const u32 bytes_per_pixel = regs.pitch_in / regs.line_length_in;
@ -156,13 +179,8 @@ void MaxwellDMA::CopyPitchToBlockLinear() {
write_buffer.resize(dst_size);
}
if (Settings::IsGPULevelExtreme()) {
memory_manager.ReadBlock(regs.offset_in, read_buffer.data(), src_size);
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
} else {
memory_manager.ReadBlockUnsafe(regs.offset_in, read_buffer.data(), src_size);
memory_manager.ReadBlockUnsafe(regs.offset_out, write_buffer.data(), dst_size);
}
memory_manager.ReadBlock(regs.offset_in, read_buffer.data(), src_size);
memory_manager.ReadBlock(regs.offset_out, write_buffer.data(), dst_size);
// If the input is linear and the output is tiled, swizzle the input and copy it over.
if (regs.dst_params.block_size.depth > 0) {

17
src/video_core/engines/maxwell_dma.h
View File

@ -21,8 +21,18 @@ namespace Tegra {
class MemoryManager;
}
namespace VideoCore {
class RasterizerInterface;
}
namespace Tegra::Engines {
class AccelerateDMAInterface {
public:
/// Write the value to the register identified by method.
virtual bool BufferCopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) = 0;
};
/**
* This engine is known as gk104_copy. Documentation can be found in:
* https://github.com/NVIDIA/open-gpu-doc/blob/master/classes/dma-copy/clb0b5.h
@ -187,6 +197,8 @@ public:
};
static_assert(sizeof(RemapConst) == 12);
void BindRasterizer(VideoCore::RasterizerInterface* rasterizer);
explicit MaxwellDMA(Core::System& system_, MemoryManager& memory_manager_);
~MaxwellDMA() override;
@ -213,6 +225,7 @@ private:
Core::System& system;
MemoryManager& memory_manager;
VideoCore::RasterizerInterface* rasterizer;
std::vector<u8> read_buffer;
std::vector<u8> write_buffer;
@ -240,7 +253,9 @@ private:
u32 pitch_out;
u32 line_length_in;
u32 line_count;
u32 reserved06[0xb8];
u32 reserved06[0xb6];
u32 remap_consta_value;
u32 remap_constb_value;
RemapConst remap_const;
Parameters dst_params;
u32 reserved07[0x1];

1
src/video_core/gpu.cpp
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@ -50,6 +50,7 @@ void GPU::BindRenderer(std::unique_ptr<VideoCore::RendererBase> renderer_) {
maxwell_3d->BindRasterizer(rasterizer);
fermi_2d->BindRasterizer(rasterizer);
kepler_compute->BindRasterizer(rasterizer);
maxwell_dma->BindRasterizer(rasterizer);
}
Engines::Maxwell3D& GPU::Maxwell3D() {

5
src/video_core/rasterizer_interface.h
View File

@ -15,7 +15,10 @@
namespace Tegra {
class MemoryManager;
namespace Engines {
class AccelerateDMAInterface;
}
} // namespace Tegra
namespace VideoCore {
@ -119,6 +122,8 @@ public:
return false;
}
[[nodiscard]] virtual Tegra::Engines::AccelerateDMAInterface& AccessAccelerateDMA() = 0;
/// Attempt to use a faster method to display the framebuffer to screen
[[nodiscard]] virtual bool AccelerateDisplay(const Tegra::FramebufferConfig& config,
VAddr framebuffer_addr, u32 pixel_stride) {

13
src/video_core/renderer_opengl/gl_rasterizer.cpp
View File

@ -171,7 +171,7 @@ RasterizerOpenGL::RasterizerOpenGL(Core::Frontend::EmuWindow& emu_window_, Tegra
buffer_cache_runtime(device),
buffer_cache(*this, maxwell3d, kepler_compute, gpu_memory, cpu_memory_, buffer_cache_runtime),
shader_cache(*this, emu_window_, gpu, maxwell3d, kepler_compute, gpu_memory, device),
query_cache(*this, maxwell3d, gpu_memory),
query_cache(*this, maxwell3d, gpu_memory), accelerate_dma(buffer_cache),
fence_manager(*this, gpu, texture_cache, buffer_cache, query_cache),
async_shaders(emu_window_) {
if (device.UseAsynchronousShaders()) {
@ -701,6 +701,10 @@ bool RasterizerOpenGL::AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surf
return true;
}
Tegra::Engines::AccelerateDMAInterface& RasterizerOpenGL::AccessAccelerateDMA() {
return accelerate_dma;
}
bool RasterizerOpenGL::AccelerateDisplay(const Tegra::FramebufferConfig& config,
VAddr framebuffer_addr, u32 pixel_stride) {
if (framebuffer_addr == 0) {
@ -1396,4 +1400,11 @@ void RasterizerOpenGL::EndTransformFeedback() {
glEndTransformFeedback();
}
AccelerateDMA::AccelerateDMA(BufferCache& buffer_cache_) : buffer_cache{buffer_cache_} {}
bool AccelerateDMA::BufferCopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) {
std::scoped_lock lock{buffer_cache.mutex};
return buffer_cache.DMACopy(src_address, dest_address, amount);
}
} // namespace OpenGL

13
src/video_core/renderer_opengl/gl_rasterizer.h
View File

@ -19,6 +19,7 @@
#include "common/common_types.h"
#include "video_core/engines/const_buffer_info.h"
#include "video_core/engines/maxwell_3d.h"
#include "video_core/engines/maxwell_dma.h"
#include "video_core/rasterizer_accelerated.h"
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
@ -58,6 +59,16 @@ struct BindlessSSBO {
};
static_assert(sizeof(BindlessSSBO) * CHAR_BIT == 128);
class AccelerateDMA : public Tegra::Engines::AccelerateDMAInterface {
public:
explicit AccelerateDMA(BufferCache& buffer_cache);
bool BufferCopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) override;
private:
BufferCache& buffer_cache;
};
class RasterizerOpenGL : public VideoCore::RasterizerAccelerated {
public:
explicit RasterizerOpenGL(Core::Frontend::EmuWindow& emu_window_, Tegra::GPU& gpu_,
@ -94,6 +105,7 @@ public:
bool AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surface& src,
const Tegra::Engines::Fermi2D::Surface& dst,
const Tegra::Engines::Fermi2D::Config& copy_config) override;
Tegra::Engines::AccelerateDMAInterface& AccessAccelerateDMA() override;
bool AccelerateDisplay(const Tegra::FramebufferConfig& config, VAddr framebuffer_addr,
u32 pixel_stride) override;
void LoadDiskResources(u64 title_id, std::stop_token stop_loading,
@ -234,6 +246,7 @@ private:
BufferCache buffer_cache;
ShaderCacheOpenGL shader_cache;
QueryCache query_cache;
AccelerateDMA accelerate_dma;
FenceManagerOpenGL fence_manager;
VideoCommon::Shader::AsyncShaders async_shaders;

13
src/video_core/renderer_vulkan/vk_rasterizer.cpp
View File

@ -251,7 +251,7 @@ RasterizerVulkan::RasterizerVulkan(Core::Frontend::EmuWindow& emu_window_, Tegra
buffer_cache(*this, maxwell3d, kepler_compute, gpu_memory, cpu_memory_, buffer_cache_runtime),
pipeline_cache(*this, gpu, maxwell3d, kepler_compute, gpu_memory, device, scheduler,
descriptor_pool, update_descriptor_queue),
query_cache{*this, maxwell3d, gpu_memory, device, scheduler},
query_cache{*this, maxwell3d, gpu_memory, device, scheduler}, accelerate_dma{buffer_cache},
fence_manager(*this, gpu, texture_cache, buffer_cache, query_cache, device, scheduler),
wfi_event(device.GetLogical().CreateEvent()), async_shaders(emu_window_) {
scheduler.SetQueryCache(query_cache);
@ -660,6 +660,10 @@ bool RasterizerVulkan::AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surf
return true;
}
Tegra::Engines::AccelerateDMAInterface& RasterizerVulkan::AccessAccelerateDMA() {
return accelerate_dma;
}
bool RasterizerVulkan::AccelerateDisplay(const Tegra::FramebufferConfig& config,
VAddr framebuffer_addr, u32 pixel_stride) {
if (!framebuffer_addr) {
@ -698,6 +702,13 @@ void RasterizerVulkan::FlushWork() {
draw_counter = 0;
}
AccelerateDMA::AccelerateDMA(BufferCache& buffer_cache_) : buffer_cache{buffer_cache_} {}
bool AccelerateDMA::BufferCopy(GPUVAddr src_address, GPUVAddr dest_address, u64 amount) {
std::scoped_lock lock{buffer_cache.mutex};
return buffer_cache.DMACopy(src_address, dest_address, amount);
}
void RasterizerVulkan::SetupShaderDescriptors(
const std::array<Shader*, Maxwell::MaxShaderProgram>& shaders, bool is_indexed) {
image_view_indices.clear();

13
src/video_core/renderer_vulkan/vk_rasterizer.h
View File

@ -13,6 +13,7 @@
#include <boost/container/static_vector.hpp>
#include "common/common_types.h"
#include "video_core/engines/maxwell_dma.h"
#include "video_core/rasterizer_accelerated.h"
#include "video_core/rasterizer_interface.h"
#include "video_core/renderer_vulkan/blit_image.h"
@ -49,6 +50,16 @@ struct VKScreenInfo;
class StateTracker;
class AccelerateDMA : public Tegra::Engines::AccelerateDMAInterface {
public:
explicit AccelerateDMA(BufferCache& buffer_cache);
bool BufferCopy(GPUVAddr start_address, GPUVAddr end_address, u64 amount) override;
private:
BufferCache& buffer_cache;
};
class RasterizerVulkan final : public VideoCore::RasterizerAccelerated {
public:
explicit RasterizerVulkan(Core::Frontend::EmuWindow& emu_window_, Tegra::GPU& gpu_,
@ -86,6 +97,7 @@ public:
bool AccelerateSurfaceCopy(const Tegra::Engines::Fermi2D::Surface& src,
const Tegra::Engines::Fermi2D::Surface& dst,
const Tegra::Engines::Fermi2D::Config& copy_config) override;
Tegra::Engines::AccelerateDMAInterface& AccessAccelerateDMA() override;
bool AccelerateDisplay(const Tegra::FramebufferConfig& config, VAddr framebuffer_addr,
u32 pixel_stride) override;
@ -186,6 +198,7 @@ private:
BufferCache buffer_cache;
VKPipelineCache pipeline_cache;
VKQueryCache query_cache;
AccelerateDMA accelerate_dma;
VKFenceManager fence_manager;
vk::Event wfi_event;