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video_core: Move command buffer loop.

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This moves the hot loop into video_core. This refactoring shall reduce the CPU overhead of calling ProcessCommandList.
This commit is contained in:
Markus Wick 2018-09-06 15:48:08 +02:00
parent c560043581
commit 0cfb0bacb2
5 changed files with 86 additions and 79 deletions
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26
src/core/hle/service/nvdrv/devices/nvhost_gpu.cpp
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@ -8,6 +8,7 @@
#include "core/core.h"
#include "core/hle/service/nvdrv/devices/nvhost_gpu.h"
#include "core/memory.h"
#include "video_core/command_processor.h"
#include "video_core/gpu.h"
#include "video_core/memory_manager.h"
@ -134,17 +135,16 @@ u32 nvhost_gpu::SubmitGPFIFO(const std::vector<u8>& input, std::vector<u8>& outp
LOG_WARNING(Service_NVDRV, "(STUBBED) called, gpfifo={:X}, num_entries={:X}, flags={:X}",
params.address, params.num_entries, params.flags);
ASSERT_MSG(input.size() ==
sizeof(IoctlSubmitGpfifo) + params.num_entries * sizeof(IoctlGpfifoEntry),
ASSERT_MSG(input.size() == sizeof(IoctlSubmitGpfifo) +
params.num_entries * sizeof(Tegra::CommandListHeader),
"Incorrect input size");
std::vector<IoctlGpfifoEntry> entries(params.num_entries);
std::vector<Tegra::CommandListHeader> entries(params.num_entries);
std::memcpy(entries.data(), &input[sizeof(IoctlSubmitGpfifo)],
params.num_entries * sizeof(IoctlGpfifoEntry));
for (auto entry : entries) {
Tegra::GPUVAddr va_addr = entry.Address();
Core::System::GetInstance().GPU().ProcessCommandList(va_addr, entry.sz);
}
params.num_entries * sizeof(Tegra::CommandListHeader));
Core::System::GetInstance().GPU().ProcessCommandLists(entries);
params.fence_out.id = 0;
params.fence_out.value = 0;
std::memcpy(output.data(), &params, sizeof(IoctlSubmitGpfifo));
@ -160,14 +160,12 @@ u32 nvhost_gpu::KickoffPB(const std::vector<u8>& input, std::vector<u8>& output)
LOG_WARNING(Service_NVDRV, "(STUBBED) called, gpfifo={:X}, num_entries={:X}, flags={:X}",
params.address, params.num_entries, params.flags);
std::vector<IoctlGpfifoEntry> entries(params.num_entries);
std::vector<Tegra::CommandListHeader> entries(params.num_entries);
Memory::ReadBlock(params.address, entries.data(),
params.num_entries * sizeof(IoctlGpfifoEntry));
params.num_entries * sizeof(Tegra::CommandListHeader));
Core::System::GetInstance().GPU().ProcessCommandLists(entries);
for (auto entry : entries) {
Tegra::GPUVAddr va_addr = entry.Address();
Core::System::GetInstance().GPU().ProcessCommandList(va_addr, entry.sz);
}
params.fence_out.id = 0;
params.fence_out.value = 0;
std::memcpy(output.data(), &params, output.size());

17
src/core/hle/service/nvdrv/devices/nvhost_gpu.h
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@ -10,7 +10,6 @@
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/service/nvdrv/devices/nvdevice.h"
#include "video_core/memory_manager.h"
namespace Service::Nvidia::Devices {
@ -151,22 +150,6 @@ private:
};
static_assert(sizeof(IoctlAllocObjCtx) == 16, "IoctlAllocObjCtx is incorrect size");
struct IoctlGpfifoEntry {
u32_le entry0; // gpu_va_lo
union {
u32_le entry1; // gpu_va_hi | (unk_0x02 << 0x08) | (size << 0x0A) | (unk_0x01 << 0x1F)
BitField<0, 8, u32_le> gpu_va_hi;
BitField<8, 2, u32_le> unk1;
BitField<10, 21, u32_le> sz;
BitField<31, 1, u32_le> unk2;
};
Tegra::GPUVAddr Address() const {
return (static_cast<Tegra::GPUVAddr>(gpu_va_hi) << 32) | entry0;
}
};
static_assert(sizeof(IoctlGpfifoEntry) == 8, "IoctlGpfifoEntry is incorrect size");
struct IoctlSubmitGpfifo {
u64_le address; // pointer to gpfifo entry structs
u32_le num_entries; // number of fence objects being submitted

101
src/video_core/command_processor.cpp
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@ -69,57 +69,64 @@ void GPU::WriteReg(u32 method, u32 subchannel, u32 value, u32 remaining_params)
}
}
void GPU::ProcessCommandList(GPUVAddr address, u32 size) {
const boost::optional<VAddr> head_address = memory_manager->GpuToCpuAddress(address);
VAddr current_addr = *head_address;
while (current_addr < *head_address + size * sizeof(CommandHeader)) {
const CommandHeader header = {Memory::Read32(current_addr)};
current_addr += sizeof(u32);
MICROPROFILE_DEFINE(ProcessCommandLists, "GPU", "Execute command buffer", MP_RGB(128, 128, 192));
switch (header.mode.Value()) {
case SubmissionMode::IncreasingOld:
case SubmissionMode::Increasing: {
// Increase the method value with each argument.
for (unsigned i = 0; i < header.arg_count; ++i) {
WriteReg(header.method + i, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
}
break;
}
case SubmissionMode::NonIncreasingOld:
case SubmissionMode::NonIncreasing: {
// Use the same method value for all arguments.
for (unsigned i = 0; i < header.arg_count; ++i) {
WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
}
break;
}
case SubmissionMode::IncreaseOnce: {
ASSERT(header.arg_count.Value() >= 1);
// Use the original method for the first argument and then the next method for all other
// arguments.
WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
header.arg_count - 1);
void GPU::ProcessCommandLists(const std::vector<CommandListHeader>& commands) {
MICROPROFILE_SCOPE(ProcessCommandLists);
for (auto entry : commands) {
Tegra::GPUVAddr address = entry.Address();
u32 size = entry.sz;
const boost::optional<VAddr> head_address = memory_manager->GpuToCpuAddress(address);
VAddr current_addr = *head_address;
while (current_addr < *head_address + size * sizeof(CommandHeader)) {
const CommandHeader header = {Memory::Read32(current_addr)};
current_addr += sizeof(u32);
for (unsigned i = 1; i < header.arg_count; ++i) {
WriteReg(header.method + 1, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
switch (header.mode.Value()) {
case SubmissionMode::IncreasingOld:
case SubmissionMode::Increasing: {
// Increase the method value with each argument.
for (unsigned i = 0; i < header.arg_count; ++i) {
WriteReg(header.method + i, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
}
break;
}
case SubmissionMode::NonIncreasingOld:
case SubmissionMode::NonIncreasing: {
// Use the same method value for all arguments.
for (unsigned i = 0; i < header.arg_count; ++i) {
WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
}
break;
}
case SubmissionMode::IncreaseOnce: {
ASSERT(header.arg_count.Value() >= 1);
// Use the original method for the first argument and then the next method for all
// other arguments.
WriteReg(header.method, header.subchannel, Memory::Read32(current_addr),
header.arg_count - 1);
current_addr += sizeof(u32);
for (unsigned i = 1; i < header.arg_count; ++i) {
WriteReg(header.method + 1, header.subchannel, Memory::Read32(current_addr),
header.arg_count - i - 1);
current_addr += sizeof(u32);
}
break;
}
case SubmissionMode::Inline: {
// The register value is stored in the bits 16-28 as an immediate
WriteReg(header.method, header.subchannel, header.inline_data, 0);
break;
}
default:
UNIMPLEMENTED();
}
break;
}
case SubmissionMode::Inline: {
// The register value is stored in the bits 16-28 as an immediate
WriteReg(header.method, header.subchannel, header.inline_data, 0);
break;
}
default:
UNIMPLEMENTED();
}
}
}

17
src/video_core/command_processor.h
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@ -7,6 +7,7 @@
#include <type_traits>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "video_core/memory_manager.h"
namespace Tegra {
@ -19,6 +20,22 @@ enum class SubmissionMode : u32 {
IncreaseOnce = 5
};
struct CommandListHeader {
u32 entry0; // gpu_va_lo
union {
u32 entry1; // gpu_va_hi | (unk_0x02 << 0x08) | (size << 0x0A) | (unk_0x01 << 0x1F)
BitField<0, 8, u32> gpu_va_hi;
BitField<8, 2, u32> unk1;
BitField<10, 21, u32> sz;
BitField<31, 1, u32> unk2;
};
GPUVAddr Address() const {
return (static_cast<GPUVAddr>(gpu_va_hi) << 32) | entry0;
}
};
static_assert(sizeof(CommandListHeader) == 8, "CommandListHeader is incorrect size");
union CommandHeader {
u32 hex;

4
src/video_core/gpu.h
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@ -6,6 +6,7 @@
#include <array>
#include <memory>
#include <vector>
#include "common/common_types.h"
#include "core/hle/service/nvflinger/buffer_queue.h"
#include "video_core/memory_manager.h"
@ -67,6 +68,7 @@ u32 RenderTargetBytesPerPixel(RenderTargetFormat format);
/// Returns the number of bytes per pixel of each depth format.
u32 DepthFormatBytesPerPixel(DepthFormat format);
struct CommandListHeader;
class DebugContext;
/**
@ -115,7 +117,7 @@ public:
~GPU();
/// Processes a command list stored at the specified address in GPU memory.
void ProcessCommandList(GPUVAddr address, u32 size);
void ProcessCommandLists(const std::vector<CommandListHeader>& commands);
/// Returns a reference to the Maxwell3D GPU engine.
Engines::Maxwell3D& Maxwell3D();