From e01a8f218707b6f3ed0f111c432440b07ea5b6ff Mon Sep 17 00:00:00 2001 From: Subv Date: Sun, 11 Feb 2018 21:34:20 -0500 Subject: GPU: Added a command processor to decode the GPU pushbuffers and forward the commands to their respective engines. --- src/video_core/CMakeLists.txt | 8 ++ src/video_core/command_processor.cpp | 130 +++++++++++++++++++++++++++++ src/video_core/command_processor.h | 43 ++++++++++ src/video_core/engines/fermi_2d.cpp | 15 ++++ src/video_core/engines/fermi_2d.h | 18 ++++ src/video_core/engines/maxwell_3d.cpp | 15 ++++ src/video_core/engines/maxwell_3d.h | 18 ++++ src/video_core/engines/maxwell_compute.cpp | 15 ++++ src/video_core/engines/maxwell_compute.h | 18 ++++ 9 files changed, 280 insertions(+) create mode 100644 src/video_core/command_processor.cpp create mode 100644 src/video_core/command_processor.h create mode 100644 src/video_core/engines/fermi_2d.cpp create mode 100644 src/video_core/engines/fermi_2d.h create mode 100644 src/video_core/engines/maxwell_3d.cpp create mode 100644 src/video_core/engines/maxwell_3d.h create mode 100644 src/video_core/engines/maxwell_compute.cpp create mode 100644 src/video_core/engines/maxwell_compute.h (limited to 'src/video_core') diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt index 69f2b4afd..70728d2f6 100644 --- a/src/video_core/CMakeLists.txt +++ b/src/video_core/CMakeLists.txt @@ -1,4 +1,12 @@ add_library(video_core STATIC + command_processor.cpp + command_processor.h + engines/fermi_2d.cpp + engines/fermi_2d.h + engines/maxwell_3d.cpp + engines/maxwell_3d.h + engines/maxwell_compute.cpp + engines/maxwell_compute.h renderer_base.cpp renderer_base.h renderer_opengl/gl_resource_manager.h diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp new file mode 100644 index 000000000..e1df875e7 --- /dev/null +++ b/src/video_core/command_processor.cpp @@ -0,0 +1,130 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include +#include +#include +#include +#include "common/assert.h" +#include "common/logging/log.h" +#include "common/microprofile.h" +#include "common/vector_math.h" +#include "core/memory.h" +#include "core/tracer/recorder.h" +#include "video_core/command_processor.h" +#include "video_core/engines/fermi_2d.h" +#include "video_core/engines/maxwell_3d.h" +#include "video_core/engines/maxwell_compute.h" +#include "video_core/renderer_base.h" +#include "video_core/video_core.h" + +namespace Tegra { + +namespace CommandProcessor { + +enum class BufferMethods { + BindObject = 0, + CountBufferMethods = 0x100, +}; + +enum class EngineID { + FERMI_TWOD_A = 0x902D, // 2D Engine + MAXWELL_B = 0xB197, // 3D Engine + MAXWELL_COMPUTE_B = 0xB1C0, + KEPLER_INLINE_TO_MEMORY_B = 0xA140, + MAXWELL_DMA_COPY_A = 0xB0B5, +}; + +// Mapping of subchannels to their bound engine ids. +static std::unordered_map bound_engines; + +static void WriteReg(u32 method, u32 subchannel, u32 value) { + LOG_WARNING(HW_GPU, "Processing method %08X on subchannel %u value %08X", method, subchannel, + value); + + if (method == static_cast(BufferMethods::BindObject)) { + // Bind the current subchannel to the desired engine id. + LOG_DEBUG(HW_GPU, "Binding subchannel %u to engine %u", subchannel, value); + ASSERT(bound_engines.find(subchannel) == bound_engines.end()); + bound_engines[subchannel] = static_cast(value); + return; + } + + if (method < static_cast(BufferMethods::CountBufferMethods)) { + // TODO(Subv): Research and implement these methods. + LOG_ERROR(HW_GPU, "Special buffer methods other than Bind are not implemented"); + return; + } + + ASSERT(bound_engines.find(subchannel) != bound_engines.end()); + + const EngineID engine = bound_engines[subchannel]; + + switch (engine) { + case EngineID::FERMI_TWOD_A: + Engines::Fermi2D::WriteReg(method, value); + break; + case EngineID::MAXWELL_B: + Engines::Maxwell3D::WriteReg(method, value); + break; + case EngineID::MAXWELL_COMPUTE_B: + Engines::MaxwellCompute::WriteReg(method, value); + break; + default: + UNIMPLEMENTED(); + } +} + +void ProcessCommandList(VAddr address, u32 size) { + VAddr current_addr = address; + while (current_addr < address + size * sizeof(CommandHeader)) { + const CommandHeader header = {Memory::Read32(current_addr)}; + 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)); + 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)); + 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)); + current_addr += sizeof(u32); + // Use the same method value for all arguments. + for (unsigned i = 1; i < header.arg_count; ++i) { + WriteReg(header.method + 1, header.subchannel, Memory::Read32(current_addr)); + 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); + break; + } + default: + UNIMPLEMENTED(); + } + } +} + +} // namespace CommandProcessor + +} // namespace Tegra diff --git a/src/video_core/command_processor.h b/src/video_core/command_processor.h new file mode 100644 index 000000000..90e64629e --- /dev/null +++ b/src/video_core/command_processor.h @@ -0,0 +1,43 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include "common/bit_field.h" +#include "common/common_types.h" + +namespace Tegra { + +namespace CommandProcessor { + +enum class SubmissionMode : u32 { + IncreasingOld = 0, + Increasing = 1, + NonIncreasingOld = 2, + NonIncreasing = 3, + Inline = 4, + IncreaseOnce = 5 +}; + +union CommandHeader { + u32 hex; + + BitField<0, 13, u32> method; + BitField<13, 3, u32> subchannel; + + BitField<16, 13, u32> arg_count; + BitField<16, 13, u32> inline_data; + + BitField<29, 3, SubmissionMode> mode; +}; +static_assert(std::is_standard_layout::value == true, + "CommandHeader does not use standard layout"); +static_assert(sizeof(CommandHeader) == sizeof(u32), "CommandHeader has incorrect size!"); + +void ProcessCommandList(VAddr address, u32 size); + +} // namespace CommandProcessor + +} // namespace Tegra diff --git a/src/video_core/engines/fermi_2d.cpp b/src/video_core/engines/fermi_2d.cpp new file mode 100644 index 000000000..3d62c321f --- /dev/null +++ b/src/video_core/engines/fermi_2d.cpp @@ -0,0 +1,15 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "video_core/engines/fermi_2d.h" + +namespace Tegra { +namespace Engines { +namespace Fermi2D { + +void WriteReg(u32 method, u32 value) {} + +} // namespace Fermi2D +} // namespace Engines +} // namespace Tegra diff --git a/src/video_core/engines/fermi_2d.h b/src/video_core/engines/fermi_2d.h new file mode 100644 index 000000000..6f3f5dfbc --- /dev/null +++ b/src/video_core/engines/fermi_2d.h @@ -0,0 +1,18 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "common/common_types.h" + +namespace Tegra { +namespace Engines { +namespace Fermi2D { + +void WriteReg(u32 method, u32 value); + +} // namespace Fermi2D + +} // namespace Engines +} // namespace Tegra diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp new file mode 100644 index 000000000..c2697c960 --- /dev/null +++ b/src/video_core/engines/maxwell_3d.cpp @@ -0,0 +1,15 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "video_core/engines/maxwell_3d.h" + +namespace Tegra { +namespace Engines { +namespace Maxwell3D { + +void WriteReg(u32 method, u32 value) {} + +} // namespace Maxwell3D +} // namespace Engines +} // namespace Tegra diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h new file mode 100644 index 000000000..6957fb721 --- /dev/null +++ b/src/video_core/engines/maxwell_3d.h @@ -0,0 +1,18 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "common/common_types.h" + +namespace Tegra { +namespace Engines { +namespace Maxwell3D { + +void WriteReg(u32 method, u32 value); + +} // namespace Maxwell3D + +} // namespace Engines +} // namespace Tegra diff --git a/src/video_core/engines/maxwell_compute.cpp b/src/video_core/engines/maxwell_compute.cpp new file mode 100644 index 000000000..c2134d63b --- /dev/null +++ b/src/video_core/engines/maxwell_compute.cpp @@ -0,0 +1,15 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "video_core/engines/maxwell_compute.h" + +namespace Tegra { +namespace Engines { +namespace MaxwellCompute { + +void WriteReg(u32 method, u32 value) {} + +} // namespace MaxwellCompute +} // namespace Engines +} // namespace Tegra diff --git a/src/video_core/engines/maxwell_compute.h b/src/video_core/engines/maxwell_compute.h new file mode 100644 index 000000000..dc9a13593 --- /dev/null +++ b/src/video_core/engines/maxwell_compute.h @@ -0,0 +1,18 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include "common/common_types.h" + +namespace Tegra { +namespace Engines { +namespace MaxwellCompute { + +void WriteReg(u32 method, u32 value); + +} // namespace MaxwellCompute + +} // namespace Engines +} // namespace Tegra -- cgit v1.2.3 From 6cddf9d88e7fc49919fda92bcd4235797c56f07f Mon Sep 17 00:00:00 2001 From: Subv Date: Sun, 11 Feb 2018 23:44:12 -0500 Subject: Make a GPU class in VideoCore to contain the GPU state. Also moved the GPU MemoryManager class to video_core since it makes more sense for it to be there. --- src/video_core/CMakeLists.txt | 3 + src/video_core/command_processor.cpp | 33 +++------ src/video_core/command_processor.h | 4 -- src/video_core/engines/fermi_2d.cpp | 4 +- src/video_core/engines/fermi_2d.h | 10 ++- src/video_core/engines/maxwell_3d.cpp | 4 +- src/video_core/engines/maxwell_3d.h | 10 ++- src/video_core/engines/maxwell_compute.cpp | 4 +- src/video_core/engines/maxwell_compute.h | 10 ++- src/video_core/gpu.h | 55 +++++++++++++++ src/video_core/memory_manager.cpp | 110 +++++++++++++++++++++++++++++ src/video_core/memory_manager.h | 49 +++++++++++++ 12 files changed, 252 insertions(+), 44 deletions(-) create mode 100644 src/video_core/gpu.h create mode 100644 src/video_core/memory_manager.cpp create mode 100644 src/video_core/memory_manager.h (limited to 'src/video_core') diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt index 70728d2f6..ed87f8ff1 100644 --- a/src/video_core/CMakeLists.txt +++ b/src/video_core/CMakeLists.txt @@ -7,6 +7,9 @@ add_library(video_core STATIC engines/maxwell_3d.h engines/maxwell_compute.cpp engines/maxwell_compute.h + gpu.h + memory_manager.cpp + memory_manager.h renderer_base.cpp renderer_base.h renderer_opengl/gl_resource_manager.h diff --git a/src/video_core/command_processor.cpp b/src/video_core/command_processor.cpp index e1df875e7..21d672085 100644 --- a/src/video_core/command_processor.cpp +++ b/src/video_core/command_processor.cpp @@ -16,30 +16,18 @@ #include "video_core/engines/fermi_2d.h" #include "video_core/engines/maxwell_3d.h" #include "video_core/engines/maxwell_compute.h" +#include "video_core/gpu.h" #include "video_core/renderer_base.h" #include "video_core/video_core.h" namespace Tegra { -namespace CommandProcessor { - enum class BufferMethods { BindObject = 0, CountBufferMethods = 0x100, }; -enum class EngineID { - FERMI_TWOD_A = 0x902D, // 2D Engine - MAXWELL_B = 0xB197, // 3D Engine - MAXWELL_COMPUTE_B = 0xB1C0, - KEPLER_INLINE_TO_MEMORY_B = 0xA140, - MAXWELL_DMA_COPY_A = 0xB0B5, -}; - -// Mapping of subchannels to their bound engine ids. -static std::unordered_map bound_engines; - -static void WriteReg(u32 method, u32 subchannel, u32 value) { +void GPU::WriteReg(u32 method, u32 subchannel, u32 value) { LOG_WARNING(HW_GPU, "Processing method %08X on subchannel %u value %08X", method, subchannel, value); @@ -63,22 +51,25 @@ static void WriteReg(u32 method, u32 subchannel, u32 value) { switch (engine) { case EngineID::FERMI_TWOD_A: - Engines::Fermi2D::WriteReg(method, value); + fermi_2d->WriteReg(method, value); break; case EngineID::MAXWELL_B: - Engines::Maxwell3D::WriteReg(method, value); + maxwell_3d->WriteReg(method, value); break; case EngineID::MAXWELL_COMPUTE_B: - Engines::MaxwellCompute::WriteReg(method, value); + maxwell_compute->WriteReg(method, value); break; default: UNIMPLEMENTED(); } } -void ProcessCommandList(VAddr address, u32 size) { - VAddr current_addr = address; - while (current_addr < address + size * sizeof(CommandHeader)) { +void GPU::ProcessCommandList(GPUVAddr address, u32 size) { + // TODO(Subv): PhysicalToVirtualAddress is a misnomer, it converts a GPU VAddr into an + // application VAddr. + const VAddr head_address = memory_manager->PhysicalToVirtualAddress(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); @@ -125,6 +116,4 @@ void ProcessCommandList(VAddr address, u32 size) { } } -} // namespace CommandProcessor - } // namespace Tegra diff --git a/src/video_core/command_processor.h b/src/video_core/command_processor.h index 90e64629e..b511bfcf7 100644 --- a/src/video_core/command_processor.h +++ b/src/video_core/command_processor.h @@ -10,8 +10,6 @@ namespace Tegra { -namespace CommandProcessor { - enum class SubmissionMode : u32 { IncreasingOld = 0, Increasing = 1, @@ -38,6 +36,4 @@ static_assert(sizeof(CommandHeader) == sizeof(u32), "CommandHeader has incorrect void ProcessCommandList(VAddr address, u32 size); -} // namespace CommandProcessor - } // namespace Tegra diff --git a/src/video_core/engines/fermi_2d.cpp b/src/video_core/engines/fermi_2d.cpp index 3d62c321f..7aab163dc 100644 --- a/src/video_core/engines/fermi_2d.cpp +++ b/src/video_core/engines/fermi_2d.cpp @@ -6,10 +6,8 @@ namespace Tegra { namespace Engines { -namespace Fermi2D { -void WriteReg(u32 method, u32 value) {} +void Fermi2D::WriteReg(u32 method, u32 value) {} -} // namespace Fermi2D } // namespace Engines } // namespace Tegra diff --git a/src/video_core/engines/fermi_2d.h b/src/video_core/engines/fermi_2d.h index 6f3f5dfbc..8967ddede 100644 --- a/src/video_core/engines/fermi_2d.h +++ b/src/video_core/engines/fermi_2d.h @@ -8,11 +8,15 @@ namespace Tegra { namespace Engines { -namespace Fermi2D { -void WriteReg(u32 method, u32 value); +class Fermi2D final { +public: + Fermi2D() = default; + ~Fermi2D() = default; -} // namespace Fermi2D + /// Write the value to the register identified by method. + void WriteReg(u32 method, u32 value); +}; } // namespace Engines } // namespace Tegra diff --git a/src/video_core/engines/maxwell_3d.cpp b/src/video_core/engines/maxwell_3d.cpp index c2697c960..ccdb310f0 100644 --- a/src/video_core/engines/maxwell_3d.cpp +++ b/src/video_core/engines/maxwell_3d.cpp @@ -6,10 +6,8 @@ namespace Tegra { namespace Engines { -namespace Maxwell3D { -void WriteReg(u32 method, u32 value) {} +void Maxwell3D::WriteReg(u32 method, u32 value) {} -} // namespace Maxwell3D } // namespace Engines } // namespace Tegra diff --git a/src/video_core/engines/maxwell_3d.h b/src/video_core/engines/maxwell_3d.h index 6957fb721..0f4ae1328 100644 --- a/src/video_core/engines/maxwell_3d.h +++ b/src/video_core/engines/maxwell_3d.h @@ -8,11 +8,15 @@ namespace Tegra { namespace Engines { -namespace Maxwell3D { -void WriteReg(u32 method, u32 value); +class Maxwell3D final { +public: + Maxwell3D() = default; + ~Maxwell3D() = default; -} // namespace Maxwell3D + /// Write the value to the register identified by method. + void WriteReg(u32 method, u32 value); +}; } // namespace Engines } // namespace Tegra diff --git a/src/video_core/engines/maxwell_compute.cpp b/src/video_core/engines/maxwell_compute.cpp index c2134d63b..e4e5f9e5e 100644 --- a/src/video_core/engines/maxwell_compute.cpp +++ b/src/video_core/engines/maxwell_compute.cpp @@ -6,10 +6,8 @@ namespace Tegra { namespace Engines { -namespace MaxwellCompute { -void WriteReg(u32 method, u32 value) {} +void MaxwellCompute::WriteReg(u32 method, u32 value) {} -} // namespace MaxwellCompute } // namespace Engines } // namespace Tegra diff --git a/src/video_core/engines/maxwell_compute.h b/src/video_core/engines/maxwell_compute.h index dc9a13593..7262e1bcb 100644 --- a/src/video_core/engines/maxwell_compute.h +++ b/src/video_core/engines/maxwell_compute.h @@ -8,11 +8,15 @@ namespace Tegra { namespace Engines { -namespace MaxwellCompute { -void WriteReg(u32 method, u32 value); +class MaxwellCompute final { +public: + MaxwellCompute() = default; + ~MaxwellCompute() = default; -} // namespace MaxwellCompute + /// Write the value to the register identified by method. + void WriteReg(u32 method, u32 value); +}; } // namespace Engines } // namespace Tegra diff --git a/src/video_core/gpu.h b/src/video_core/gpu.h new file mode 100644 index 000000000..a961f3fd4 --- /dev/null +++ b/src/video_core/gpu.h @@ -0,0 +1,55 @@ +// Copyright 2018 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include +#include "common/common_types.h" +#include "video_core/engines/fermi_2d.h" +#include "video_core/engines/maxwell_3d.h" +#include "video_core/engines/maxwell_compute.h" +#include "video_core/memory_manager.h" + +namespace Tegra { + +enum class EngineID { + FERMI_TWOD_A = 0x902D, // 2D Engine + MAXWELL_B = 0xB197, // 3D Engine + MAXWELL_COMPUTE_B = 0xB1C0, + KEPLER_INLINE_TO_MEMORY_B = 0xA140, + MAXWELL_DMA_COPY_A = 0xB0B5, +}; + +class GPU final { +public: + GPU() { + memory_manager = std::make_unique(); + maxwell_3d = std::make_unique(); + fermi_2d = std::make_unique(); + maxwell_compute = std::make_unique(); + } + ~GPU() = default; + + /// Processes a command list stored at the specified address in GPU memory. + void ProcessCommandList(GPUVAddr address, u32 size); + + std::unique_ptr memory_manager; + +private: + /// Writes a single register in the engine bound to the specified subchannel + void WriteReg(u32 method, u32 subchannel, u32 value); + + /// Mapping of command subchannels to their bound engine ids. + std::unordered_map bound_engines; + + /// 3D engine + std::unique_ptr maxwell_3d; + /// 2D engine + std::unique_ptr fermi_2d; + /// Compute engine + std::unique_ptr maxwell_compute; +}; + +} // namespace Tegra diff --git a/src/video_core/memory_manager.cpp b/src/video_core/memory_manager.cpp new file mode 100644 index 000000000..2789a4ca1 --- /dev/null +++ b/src/video_core/memory_manager.cpp @@ -0,0 +1,110 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/assert.h" +#include "video_core/memory_manager.h" + +namespace Tegra { + +PAddr MemoryManager::AllocateSpace(u64 size, u64 align) { + boost::optional paddr = FindFreeBlock(size, align); + ASSERT(paddr); + + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + PageSlot(*paddr + offset) = static_cast(PageStatus::Allocated); + } + + return *paddr; +} + +PAddr MemoryManager::AllocateSpace(PAddr paddr, u64 size, u64 align) { + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + if (IsPageMapped(paddr + offset)) { + return AllocateSpace(size, align); + } + } + + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + PageSlot(paddr + offset) = static_cast(PageStatus::Allocated); + } + + return paddr; +} + +PAddr MemoryManager::MapBufferEx(VAddr vaddr, u64 size) { + vaddr &= ~Memory::PAGE_MASK; + + boost::optional paddr = FindFreeBlock(size); + ASSERT(paddr); + + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + PageSlot(*paddr + offset) = vaddr + offset; + } + + return *paddr; +} + +PAddr MemoryManager::MapBufferEx(VAddr vaddr, PAddr paddr, u64 size) { + vaddr &= ~Memory::PAGE_MASK; + paddr &= ~Memory::PAGE_MASK; + + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + if (PageSlot(paddr + offset) != static_cast(PageStatus::Allocated)) { + return MapBufferEx(vaddr, size); + } + } + + for (u64 offset = 0; offset < size; offset += Memory::PAGE_SIZE) { + PageSlot(paddr + offset) = vaddr + offset; + } + + return paddr; +} + +boost::optional MemoryManager::FindFreeBlock(u64 size, u64 align) { + PAddr paddr{}; + u64 free_space{}; + align = (align + Memory::PAGE_MASK) & ~Memory::PAGE_MASK; + + while (paddr + free_space < MAX_ADDRESS) { + if (!IsPageMapped(paddr + free_space)) { + free_space += Memory::PAGE_SIZE; + if (free_space >= size) { + return paddr; + } + } else { + paddr += free_space + Memory::PAGE_SIZE; + free_space = 0; + const u64 remainder{paddr % align}; + if (!remainder) { + paddr = (paddr - remainder) + align; + } + } + } + + return {}; +} + +VAddr MemoryManager::PhysicalToVirtualAddress(PAddr paddr) { + VAddr base_addr = PageSlot(paddr); + ASSERT(base_addr != static_cast(PageStatus::Unmapped)); + return base_addr + (paddr & Memory::PAGE_MASK); +} + +bool MemoryManager::IsPageMapped(PAddr paddr) { + return PageSlot(paddr) != static_cast(PageStatus::Unmapped); +} + +VAddr& MemoryManager::PageSlot(PAddr paddr) { + auto& block = page_table[(paddr >> (Memory::PAGE_BITS + PAGE_TABLE_BITS)) & PAGE_TABLE_MASK]; + if (!block) { + block = std::make_unique(); + for (unsigned index = 0; index < PAGE_BLOCK_SIZE; index++) { + (*block)[index] = static_cast(PageStatus::Unmapped); + } + } + return (*block)[(paddr >> Memory::PAGE_BITS) & PAGE_BLOCK_MASK]; +} + +} // namespace Tegra diff --git a/src/video_core/memory_manager.h b/src/video_core/memory_manager.h new file mode 100644 index 000000000..47da7acd6 --- /dev/null +++ b/src/video_core/memory_manager.h @@ -0,0 +1,49 @@ +// Copyright 2018 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include +#include +#include "common/common_types.h" +#include "core/memory.h" + +namespace Tegra { + +/// Virtual addresses in the GPU's memory map are 64 bit. +using GPUVAddr = u64; + +class MemoryManager final { +public: + MemoryManager() = default; + + PAddr AllocateSpace(u64 size, u64 align); + PAddr AllocateSpace(PAddr paddr, u64 size, u64 align); + PAddr MapBufferEx(VAddr vaddr, u64 size); + PAddr MapBufferEx(VAddr vaddr, PAddr paddr, u64 size); + VAddr PhysicalToVirtualAddress(PAddr paddr); + +private: + boost::optional FindFreeBlock(u64 size, u64 align = 1); + bool IsPageMapped(PAddr paddr); + VAddr& PageSlot(PAddr paddr); + + enum class PageStatus : u64 { + Unmapped = 0xFFFFFFFFFFFFFFFFULL, + Allocated = 0xFFFFFFFFFFFFFFFEULL, + }; + + static constexpr u64 MAX_ADDRESS{0x10000000000ULL}; + static constexpr u64 PAGE_TABLE_BITS{14}; + static constexpr u64 PAGE_TABLE_SIZE{1 << PAGE_TABLE_BITS}; + static constexpr u64 PAGE_TABLE_MASK{PAGE_TABLE_SIZE - 1}; + static constexpr u64 PAGE_BLOCK_BITS{14}; + static constexpr u64 PAGE_BLOCK_SIZE{1 << PAGE_BLOCK_BITS}; + static constexpr u64 PAGE_BLOCK_MASK{PAGE_BLOCK_SIZE - 1}; + + using PageBlock = std::array; + std::array, PAGE_TABLE_SIZE> page_table{}; +}; + +} // namespace Tegra -- cgit v1.2.3