// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <array>
#include <cstddef>
#include <vector>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "video_core/engines/engine_interface.h"
namespace Core {
class System;
}
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;
virtual bool BufferClear(GPUVAddr src_address, u64 amount, u32 value) = 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
* https://github.com/envytools/envytools/blob/master/rnndb/fifo/gk104_copy.xml
*/
class MaxwellDMA final : public EngineInterface {
public:
struct PackedGPUVAddr {
u32 upper;
u32 lower;
constexpr operator GPUVAddr() const noexcept {
return (static_cast<GPUVAddr>(upper & 0xff) << 32) | lower;
}
};
union BlockSize {
BitField<0, 4, u32> width;
BitField<4, 4, u32> height;
BitField<8, 4, u32> depth;
BitField<12, 4, u32> gob_height;
};
static_assert(sizeof(BlockSize) == 4);
union Origin {
BitField<0, 16, u32> x;
BitField<16, 16, u32> y;
};
static_assert(sizeof(Origin) == 4);
struct Parameters {
BlockSize block_size;
u32 width;
u32 height;
u32 depth;
u32 layer;
Origin origin;
};
static_assert(sizeof(Parameters) == 24);
struct Semaphore {
PackedGPUVAddr address;
u32 payload;
};
static_assert(sizeof(Semaphore) == 12);
struct RenderEnable {
enum class Mode : u32 {
// Note: This uses Pascal case in order to avoid the identifiers
// FALSE and TRUE, which are reserved on Darwin.
False = 0,
True = 1,
Conditional = 2,
RenderIfEqual = 3,
RenderIfNotEqual = 4,
};
PackedGPUVAddr address;
BitField<0, 3, Mode> mode;
};
static_assert(sizeof(RenderEnable) == 12);
enum class PhysModeTarget : u32 {
LOCAL_FB = 0,
COHERENT_SYSMEM = 1,
NONCOHERENT_SYSMEM = 2,
};
using PhysMode = BitField<0, 2, PhysModeTarget>;
union LaunchDMA {
enum class DataTransferType : u32 {
NONE = 0,
PIPELINED = 1,
NON_PIPELINED = 2,
};
enum class SemaphoreType : u32 {
NONE = 0,
RELEASE_ONE_WORD_SEMAPHORE = 1,
RELEASE_FOUR_WORD_SEMAPHORE = 2,
};
enum class InterruptType : u32 {
NONE = 0,
BLOCKING = 1,
NON_BLOCKING = 2,
};
enum class MemoryLayout : u32 {
BLOCKLINEAR = 0,
PITCH = 1,
};
enum class Type : u32 {
VIRTUAL = 0,
PHYSICAL = 1,
};
enum class SemaphoreReduction : u32 {
IMIN = 0,
IMAX = 1,
IXOR = 2,
IAND = 3,
IOR = 4,
IADD = 5,
INC = 6,
DEC = 7,
FADD = 0xA,
};
enum class SemaphoreReductionSign : u32 {
SIGNED = 0,
UNSIGNED = 1,
};
enum class BypassL2 : u32 {
USE_PTE_SETTING = 0,
FORCE_VOLATILE = 1,
};
BitField<0, 2, DataTransferType> data_transfer_type;
BitField<2, 1, u32> flush_enable;
BitField<3, 2, SemaphoreType> semaphore_type;
BitField<5, 2, InterruptType> interrupt_type;
BitField<7, 1, MemoryLayout> src_memory_layout;
BitField<8, 1, MemoryLayout> dst_memory_layout;
BitField<9, 1, u32> multi_line_enable;
BitField<10, 1, u32> remap_enable;
BitField<11, 1, u32> rmwdisable;
BitField<12, 1, Type> src_type;
BitField<13, 1, Type> dst_type;
BitField<14, 4, SemaphoreReduction> semaphore_reduction;
BitField<18, 1, SemaphoreReductionSign> semaphore_reduction_sign;
BitField<19, 1, u32> reduction_enable;
BitField<20, 1, BypassL2> bypass_l2;
};
static_assert(sizeof(LaunchDMA) == 4);
struct RemapConst {
enum class Swizzle : u32 {
SRC_X = 0,
SRC_Y = 1,
SRC_Z = 2,
SRC_W = 3,
CONST_A = 4,
CONST_B = 5,
NO_WRITE = 6,
};
PackedGPUVAddr address;
union {
BitField<0, 3, Swizzle> dst_x;
BitField<4, 3, Swizzle> dst_y;
BitField<8, 3, Swizzle> dst_z;
BitField<12, 3, Swizzle> dst_w;
BitField<0, 12, u32> dst_components_raw;
BitField<16, 2, u32> component_size_minus_one;
BitField<20, 2, u32> num_src_components_minus_one;
BitField<24, 2, u32> num_dst_components_minus_one;
};
Swizzle GetComponent(size_t i) const {
const u32 raw = dst_components_raw;
return static_cast<Swizzle>((raw >> (i * 3)) & 0x7);
}
};
static_assert(sizeof(RemapConst) == 12);
void BindRasterizer(VideoCore::RasterizerInterface* rasterizer);
explicit MaxwellDMA(Core::System& system_, MemoryManager& memory_manager_);
~MaxwellDMA() override;
/// Write the value to the register identified by method.
void CallMethod(u32 method, u32 method_argument, bool is_last_call) override;
/// Write multiple values to the register identified by method.
void CallMultiMethod(u32 method, const u32* base_start, u32 amount,
u32 methods_pending) override;
private:
/// Performs the copy from the source buffer to the destination buffer as configured in the
/// registers.
void Launch();
void CopyBlockLinearToPitch();
void CopyPitchToBlockLinear();
void CopyBlockLinearToBlockLinear();
void FastCopyBlockLinearToPitch();
void ReleaseSemaphore();
Core::System& system;
MemoryManager& memory_manager;
VideoCore::RasterizerInterface* rasterizer = nullptr;
std::vector<u8> read_buffer;
std::vector<u8> write_buffer;
std::vector<u8> intermediate_buffer;
static constexpr std::size_t NUM_REGS = 0x800;
struct Regs {
union {
struct {
u32 reserved[0x40];
u32 nop;
u32 reserved01[0xf];
u32 pm_trigger;
u32 reserved02[0x3f];
Semaphore semaphore;
u32 reserved03[0x2];
RenderEnable render_enable;
PhysMode src_phys_mode;
PhysMode dst_phys_mode;
u32 reserved04[0x26];
LaunchDMA launch_dma;
u32 reserved05[0x3f];
PackedGPUVAddr offset_in;
PackedGPUVAddr offset_out;
u32 pitch_in;
u32 pitch_out;
u32 line_length_in;
u32 line_count;
u32 reserved06[0xb6];
u32 remap_consta_value;
u32 remap_constb_value;
RemapConst remap_const;
Parameters dst_params;
u32 reserved07[0x1];
Parameters src_params;
u32 reserved08[0x275];
u32 pm_trigger_end;
u32 reserved09[0x3ba];
};
std::array<u32, NUM_REGS> reg_array;
};
} regs{};
#define ASSERT_REG_POSITION(field_name, position) \
static_assert(offsetof(MaxwellDMA::Regs, field_name) == position * 4, \
"Field " #field_name " has invalid position")
ASSERT_REG_POSITION(launch_dma, 0xC0);
ASSERT_REG_POSITION(offset_in, 0x100);
ASSERT_REG_POSITION(offset_out, 0x102);
ASSERT_REG_POSITION(pitch_in, 0x104);
ASSERT_REG_POSITION(pitch_out, 0x105);
ASSERT_REG_POSITION(line_length_in, 0x106);
ASSERT_REG_POSITION(line_count, 0x107);
ASSERT_REG_POSITION(remap_const, 0x1C0);
ASSERT_REG_POSITION(dst_params, 0x1C3);
ASSERT_REG_POSITION(src_params, 0x1CA);
#undef ASSERT_REG_POSITION
};
} // namespace Tegra::Engines
