479605b3e5
Renames some variables to prevent ones in inner scopes from shadowing outer-scoped variables. The Copy* functions have no shadowing, but we rename them anyways to remain consistent with the other functions.
581 lines
20 KiB
C++
581 lines
20 KiB
C++
// Copyright 2018 yuzu emulator team
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/logging/log.h"
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#include "core/core.h"
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#include "core/hle/kernel/memory/page_table.h"
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#include "core/hle/kernel/process.h"
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#include "core/memory.h"
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#include "video_core/gpu.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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namespace Tegra {
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MemoryManager::MemoryManager(Core::System& system, VideoCore::RasterizerInterface& rasterizer)
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: rasterizer{rasterizer}, system{system} {
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page_table.Resize(address_space_width, page_bits, false);
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// Initialize the map with a single free region covering the entire managed space.
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VirtualMemoryArea initial_vma;
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initial_vma.size = address_space_end;
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vma_map.emplace(initial_vma.base, initial_vma);
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UpdatePageTableForVMA(initial_vma);
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}
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MemoryManager::~MemoryManager() = default;
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GPUVAddr MemoryManager::AllocateSpace(u64 size, u64 align) {
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const u64 aligned_size{Common::AlignUp(size, page_size)};
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const GPUVAddr gpu_addr{FindFreeRegion(address_space_base, aligned_size)};
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AllocateMemory(gpu_addr, 0, aligned_size);
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return gpu_addr;
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}
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GPUVAddr MemoryManager::AllocateSpace(GPUVAddr gpu_addr, u64 size, u64 align) {
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const u64 aligned_size{Common::AlignUp(size, page_size)};
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AllocateMemory(gpu_addr, 0, aligned_size);
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return gpu_addr;
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}
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GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, u64 size) {
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const u64 aligned_size{Common::AlignUp(size, page_size)};
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const GPUVAddr gpu_addr{FindFreeRegion(address_space_base, aligned_size)};
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MapBackingMemory(gpu_addr, system.Memory().GetPointer(cpu_addr), aligned_size, cpu_addr);
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ASSERT(
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system.CurrentProcess()->PageTable().LockForDeviceAddressSpace(cpu_addr, size).IsSuccess());
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return gpu_addr;
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}
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GPUVAddr MemoryManager::MapBufferEx(VAddr cpu_addr, GPUVAddr gpu_addr, u64 size) {
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ASSERT((gpu_addr & page_mask) == 0);
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const u64 aligned_size{Common::AlignUp(size, page_size)};
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MapBackingMemory(gpu_addr, system.Memory().GetPointer(cpu_addr), aligned_size, cpu_addr);
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ASSERT(
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system.CurrentProcess()->PageTable().LockForDeviceAddressSpace(cpu_addr, size).IsSuccess());
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return gpu_addr;
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}
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GPUVAddr MemoryManager::UnmapBuffer(GPUVAddr gpu_addr, u64 size) {
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ASSERT((gpu_addr & page_mask) == 0);
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const u64 aligned_size{Common::AlignUp(size, page_size)};
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const auto cpu_addr = GpuToCpuAddress(gpu_addr);
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ASSERT(cpu_addr);
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// Flush and invalidate through the GPU interface, to be asynchronous if possible.
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system.GPU().FlushAndInvalidateRegion(*cpu_addr, aligned_size);
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UnmapRange(gpu_addr, aligned_size);
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ASSERT(system.CurrentProcess()
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->PageTable()
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.UnlockForDeviceAddressSpace(cpu_addr.value(), size)
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.IsSuccess());
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return gpu_addr;
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}
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GPUVAddr MemoryManager::FindFreeRegion(GPUVAddr region_start, u64 size) const {
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// Find the first Free VMA.
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const VMAHandle vma_handle{
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std::find_if(vma_map.begin(), vma_map.end(), [region_start, size](const auto& vma) {
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if (vma.second.type != VirtualMemoryArea::Type::Unmapped) {
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return false;
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}
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const VAddr vma_end{vma.second.base + vma.second.size};
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return vma_end > region_start && vma_end >= region_start + size;
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})};
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if (vma_handle == vma_map.end()) {
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return {};
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}
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return std::max(region_start, vma_handle->second.base);
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}
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bool MemoryManager::IsAddressValid(GPUVAddr addr) const {
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return (addr >> page_bits) < page_table.pointers.size();
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}
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std::optional<VAddr> MemoryManager::GpuToCpuAddress(GPUVAddr addr) const {
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if (!IsAddressValid(addr)) {
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return {};
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}
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const VAddr cpu_addr{page_table.backing_addr[addr >> page_bits]};
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if (cpu_addr) {
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return cpu_addr + (addr & page_mask);
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}
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return {};
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}
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template <typename T>
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T MemoryManager::Read(GPUVAddr addr) const {
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if (!IsAddressValid(addr)) {
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return {};
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}
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const u8* page_pointer{GetPointer(addr)};
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if (page_pointer) {
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// NOTE: Avoid adding any extra logic to this fast-path block
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T value;
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std::memcpy(&value, page_pointer, sizeof(T));
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return value;
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}
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UNREACHABLE();
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return {};
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}
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template <typename T>
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void MemoryManager::Write(GPUVAddr addr, T data) {
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if (!IsAddressValid(addr)) {
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return;
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}
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u8* page_pointer{GetPointer(addr)};
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if (page_pointer) {
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// NOTE: Avoid adding any extra logic to this fast-path block
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std::memcpy(page_pointer, &data, sizeof(T));
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return;
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}
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UNREACHABLE();
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}
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template u8 MemoryManager::Read<u8>(GPUVAddr addr) const;
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template u16 MemoryManager::Read<u16>(GPUVAddr addr) const;
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template u32 MemoryManager::Read<u32>(GPUVAddr addr) const;
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template u64 MemoryManager::Read<u64>(GPUVAddr addr) const;
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template void MemoryManager::Write<u8>(GPUVAddr addr, u8 data);
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template void MemoryManager::Write<u16>(GPUVAddr addr, u16 data);
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template void MemoryManager::Write<u32>(GPUVAddr addr, u32 data);
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template void MemoryManager::Write<u64>(GPUVAddr addr, u64 data);
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u8* MemoryManager::GetPointer(GPUVAddr addr) {
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if (!IsAddressValid(addr)) {
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return {};
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}
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auto& memory = system.Memory();
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const VAddr page_addr{page_table.backing_addr[addr >> page_bits]};
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if (page_addr != 0) {
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return memory.GetPointer(page_addr + (addr & page_mask));
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}
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LOG_ERROR(HW_GPU, "Unknown GetPointer @ 0x{:016X}", addr);
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return {};
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}
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const u8* MemoryManager::GetPointer(GPUVAddr addr) const {
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if (!IsAddressValid(addr)) {
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return {};
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}
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const auto& memory = system.Memory();
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const VAddr page_addr{page_table.backing_addr[addr >> page_bits]};
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if (page_addr != 0) {
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return memory.GetPointer(page_addr + (addr & page_mask));
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}
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LOG_ERROR(HW_GPU, "Unknown GetPointer @ 0x{:016X}", addr);
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return {};
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}
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bool MemoryManager::IsBlockContinuous(const GPUVAddr start, const std::size_t size) const {
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const std::size_t inner_size = size - 1;
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const GPUVAddr end = start + inner_size;
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const auto host_ptr_start = reinterpret_cast<std::uintptr_t>(GetPointer(start));
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const auto host_ptr_end = reinterpret_cast<std::uintptr_t>(GetPointer(end));
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const auto range = static_cast<std::size_t>(host_ptr_end - host_ptr_start);
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return range == inner_size;
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}
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void MemoryManager::ReadBlock(GPUVAddr gpu_src_addr, void* dest_buffer,
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const std::size_t size) const {
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std::size_t remaining_size{size};
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std::size_t page_index{gpu_src_addr >> page_bits};
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std::size_t page_offset{gpu_src_addr & page_mask};
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auto& memory = system.Memory();
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while (remaining_size > 0) {
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const std::size_t copy_amount{
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std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
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const VAddr src_addr{page_table.backing_addr[page_index] + page_offset};
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// Flush must happen on the rasterizer interface, such that memory is always synchronous
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// when it is read (even when in asynchronous GPU mode). Fixes Dead Cells title menu.
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rasterizer.FlushRegion(src_addr, copy_amount);
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memory.ReadBlockUnsafe(src_addr, dest_buffer, copy_amount);
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page_index++;
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page_offset = 0;
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dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
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remaining_size -= copy_amount;
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}
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}
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void MemoryManager::ReadBlockUnsafe(GPUVAddr gpu_src_addr, void* dest_buffer,
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const std::size_t size) const {
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std::size_t remaining_size{size};
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std::size_t page_index{gpu_src_addr >> page_bits};
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std::size_t page_offset{gpu_src_addr & page_mask};
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auto& memory = system.Memory();
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while (remaining_size > 0) {
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const std::size_t copy_amount{
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std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
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const u8* page_pointer = page_table.pointers[page_index];
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if (page_pointer) {
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const VAddr src_addr{page_table.backing_addr[page_index] + page_offset};
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memory.ReadBlockUnsafe(src_addr, dest_buffer, copy_amount);
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} else {
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std::memset(dest_buffer, 0, copy_amount);
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}
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page_index++;
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page_offset = 0;
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dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
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remaining_size -= copy_amount;
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}
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}
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void MemoryManager::WriteBlock(GPUVAddr gpu_dest_addr, const void* src_buffer,
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const std::size_t size) {
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std::size_t remaining_size{size};
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std::size_t page_index{gpu_dest_addr >> page_bits};
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std::size_t page_offset{gpu_dest_addr & page_mask};
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auto& memory = system.Memory();
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while (remaining_size > 0) {
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const std::size_t copy_amount{
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std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
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const VAddr dest_addr{page_table.backing_addr[page_index] + page_offset};
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// Invalidate must happen on the rasterizer interface, such that memory is always
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// synchronous when it is written (even when in asynchronous GPU mode).
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rasterizer.InvalidateRegion(dest_addr, copy_amount);
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memory.WriteBlockUnsafe(dest_addr, src_buffer, copy_amount);
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page_index++;
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page_offset = 0;
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src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
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remaining_size -= copy_amount;
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}
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}
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void MemoryManager::WriteBlockUnsafe(GPUVAddr gpu_dest_addr, const void* src_buffer,
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const std::size_t size) {
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std::size_t remaining_size{size};
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std::size_t page_index{gpu_dest_addr >> page_bits};
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std::size_t page_offset{gpu_dest_addr & page_mask};
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auto& memory = system.Memory();
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while (remaining_size > 0) {
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const std::size_t copy_amount{
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std::min(static_cast<std::size_t>(page_size) - page_offset, remaining_size)};
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u8* page_pointer = page_table.pointers[page_index];
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if (page_pointer) {
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const VAddr dest_addr{page_table.backing_addr[page_index] + page_offset};
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memory.WriteBlockUnsafe(dest_addr, src_buffer, copy_amount);
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}
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page_index++;
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page_offset = 0;
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src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
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remaining_size -= copy_amount;
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}
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}
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void MemoryManager::CopyBlock(GPUVAddr gpu_dest_addr, GPUVAddr gpu_src_addr,
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const std::size_t size) {
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std::vector<u8> tmp_buffer(size);
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ReadBlock(gpu_src_addr, tmp_buffer.data(), size);
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WriteBlock(gpu_dest_addr, tmp_buffer.data(), size);
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}
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void MemoryManager::CopyBlockUnsafe(GPUVAddr gpu_dest_addr, GPUVAddr gpu_src_addr,
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const std::size_t size) {
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std::vector<u8> tmp_buffer(size);
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ReadBlockUnsafe(gpu_src_addr, tmp_buffer.data(), size);
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WriteBlockUnsafe(gpu_dest_addr, tmp_buffer.data(), size);
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}
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bool MemoryManager::IsGranularRange(GPUVAddr gpu_addr, std::size_t size) {
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const VAddr addr = page_table.backing_addr[gpu_addr >> page_bits];
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const std::size_t page = (addr & Core::Memory::PAGE_MASK) + size;
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return page <= Core::Memory::PAGE_SIZE;
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}
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void MemoryManager::MapPages(GPUVAddr base, u64 size, u8* memory, Common::PageType type,
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VAddr backing_addr) {
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LOG_DEBUG(HW_GPU, "Mapping {} onto {:016X}-{:016X}", fmt::ptr(memory), base * page_size,
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(base + size) * page_size);
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const VAddr end{base + size};
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ASSERT_MSG(end <= page_table.pointers.size(), "out of range mapping at {:016X}",
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base + page_table.pointers.size());
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if (memory == nullptr) {
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while (base != end) {
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page_table.pointers[base] = nullptr;
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page_table.backing_addr[base] = 0;
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base += 1;
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}
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} else {
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while (base != end) {
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page_table.pointers[base] = memory;
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page_table.backing_addr[base] = backing_addr;
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base += 1;
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memory += page_size;
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backing_addr += page_size;
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}
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}
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}
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void MemoryManager::MapMemoryRegion(GPUVAddr base, u64 size, u8* target, VAddr backing_addr) {
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ASSERT_MSG((size & page_mask) == 0, "non-page aligned size: {:016X}", size);
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ASSERT_MSG((base & page_mask) == 0, "non-page aligned base: {:016X}", base);
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MapPages(base / page_size, size / page_size, target, Common::PageType::Memory, backing_addr);
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}
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void MemoryManager::UnmapRegion(GPUVAddr base, u64 size) {
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ASSERT_MSG((size & page_mask) == 0, "non-page aligned size: {:016X}", size);
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ASSERT_MSG((base & page_mask) == 0, "non-page aligned base: {:016X}", base);
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MapPages(base / page_size, size / page_size, nullptr, Common::PageType::Unmapped);
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}
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bool VirtualMemoryArea::CanBeMergedWith(const VirtualMemoryArea& next) const {
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ASSERT(base + size == next.base);
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if (type != next.type) {
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return {};
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}
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if (type == VirtualMemoryArea::Type::Allocated && (offset + size != next.offset)) {
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return {};
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}
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if (type == VirtualMemoryArea::Type::Mapped && backing_memory + size != next.backing_memory) {
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return {};
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}
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return true;
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}
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MemoryManager::VMAHandle MemoryManager::FindVMA(GPUVAddr target) const {
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if (target >= address_space_end) {
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return vma_map.end();
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} else {
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return std::prev(vma_map.upper_bound(target));
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}
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}
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MemoryManager::VMAIter MemoryManager::Allocate(VMAIter vma_handle) {
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VirtualMemoryArea& vma{vma_handle->second};
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vma.type = VirtualMemoryArea::Type::Allocated;
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vma.backing_addr = 0;
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vma.backing_memory = {};
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UpdatePageTableForVMA(vma);
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return MergeAdjacent(vma_handle);
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}
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MemoryManager::VMAHandle MemoryManager::AllocateMemory(GPUVAddr target, std::size_t offset,
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u64 size) {
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// This is the appropriately sized VMA that will turn into our allocation.
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VMAIter vma_handle{CarveVMA(target, size)};
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VirtualMemoryArea& vma{vma_handle->second};
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ASSERT(vma.size == size);
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vma.offset = offset;
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return Allocate(vma_handle);
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}
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MemoryManager::VMAHandle MemoryManager::MapBackingMemory(GPUVAddr target, u8* memory, u64 size,
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VAddr backing_addr) {
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// This is the appropriately sized VMA that will turn into our allocation.
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VMAIter vma_handle{CarveVMA(target, size)};
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VirtualMemoryArea& vma{vma_handle->second};
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ASSERT(vma.size == size);
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vma.type = VirtualMemoryArea::Type::Mapped;
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vma.backing_memory = memory;
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vma.backing_addr = backing_addr;
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UpdatePageTableForVMA(vma);
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return MergeAdjacent(vma_handle);
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}
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void MemoryManager::UnmapRange(GPUVAddr target, u64 size) {
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VMAIter vma{CarveVMARange(target, size)};
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const VAddr target_end{target + size};
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const VMAIter end{vma_map.end()};
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// The comparison against the end of the range must be done using addresses since VMAs can be
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// merged during this process, causing invalidation of the iterators.
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while (vma != end && vma->second.base < target_end) {
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// Unmapped ranges return to allocated state and can be reused
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// This behavior is used by Super Mario Odyssey, Sonic Forces, and likely other games
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vma = std::next(Allocate(vma));
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}
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ASSERT(FindVMA(target)->second.size >= size);
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}
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MemoryManager::VMAIter MemoryManager::StripIterConstness(const VMAHandle& iter) {
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// This uses a neat C++ trick to convert a const_iterator to a regular iterator, given
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// non-const access to its container.
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return vma_map.erase(iter, iter); // Erases an empty range of elements
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}
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MemoryManager::VMAIter MemoryManager::CarveVMA(GPUVAddr base, u64 size) {
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ASSERT_MSG((size & page_mask) == 0, "non-page aligned size: 0x{:016X}", size);
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ASSERT_MSG((base & page_mask) == 0, "non-page aligned base: 0x{:016X}", base);
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VMAIter vma_handle{StripIterConstness(FindVMA(base))};
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if (vma_handle == vma_map.end()) {
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// Target address is outside the managed range
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return {};
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}
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const VirtualMemoryArea& vma{vma_handle->second};
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if (vma.type == VirtualMemoryArea::Type::Mapped) {
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// Region is already allocated
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return vma_handle;
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}
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const VAddr start_in_vma{base - vma.base};
|
|
const VAddr end_in_vma{start_in_vma + size};
|
|
|
|
ASSERT_MSG(end_in_vma <= vma.size, "region size 0x{:016X} is less than required size 0x{:016X}",
|
|
vma.size, end_in_vma);
|
|
|
|
if (end_in_vma < vma.size) {
|
|
// Split VMA at the end of the allocated region
|
|
SplitVMA(vma_handle, end_in_vma);
|
|
}
|
|
if (start_in_vma != 0) {
|
|
// Split VMA at the start of the allocated region
|
|
vma_handle = SplitVMA(vma_handle, start_in_vma);
|
|
}
|
|
|
|
return vma_handle;
|
|
}
|
|
|
|
MemoryManager::VMAIter MemoryManager::CarveVMARange(GPUVAddr target, u64 size) {
|
|
ASSERT_MSG((size & page_mask) == 0, "non-page aligned size: 0x{:016X}", size);
|
|
ASSERT_MSG((target & page_mask) == 0, "non-page aligned base: 0x{:016X}", target);
|
|
|
|
const VAddr target_end{target + size};
|
|
ASSERT(target_end >= target);
|
|
ASSERT(size > 0);
|
|
|
|
VMAIter begin_vma{StripIterConstness(FindVMA(target))};
|
|
const VMAIter i_end{vma_map.lower_bound(target_end)};
|
|
if (std::any_of(begin_vma, i_end, [](const auto& entry) {
|
|
return entry.second.type == VirtualMemoryArea::Type::Unmapped;
|
|
})) {
|
|
return {};
|
|
}
|
|
|
|
if (target != begin_vma->second.base) {
|
|
begin_vma = SplitVMA(begin_vma, target - begin_vma->second.base);
|
|
}
|
|
|
|
VMAIter end_vma{StripIterConstness(FindVMA(target_end))};
|
|
if (end_vma != vma_map.end() && target_end != end_vma->second.base) {
|
|
end_vma = SplitVMA(end_vma, target_end - end_vma->second.base);
|
|
}
|
|
|
|
return begin_vma;
|
|
}
|
|
|
|
MemoryManager::VMAIter MemoryManager::SplitVMA(VMAIter vma_handle, u64 offset_in_vma) {
|
|
VirtualMemoryArea& old_vma{vma_handle->second};
|
|
VirtualMemoryArea new_vma{old_vma}; // Make a copy of the VMA
|
|
|
|
// For now, don't allow no-op VMA splits (trying to split at a boundary) because it's probably
|
|
// a bug. This restriction might be removed later.
|
|
ASSERT(offset_in_vma < old_vma.size);
|
|
ASSERT(offset_in_vma > 0);
|
|
|
|
old_vma.size = offset_in_vma;
|
|
new_vma.base += offset_in_vma;
|
|
new_vma.size -= offset_in_vma;
|
|
|
|
switch (new_vma.type) {
|
|
case VirtualMemoryArea::Type::Unmapped:
|
|
break;
|
|
case VirtualMemoryArea::Type::Allocated:
|
|
new_vma.offset += offset_in_vma;
|
|
break;
|
|
case VirtualMemoryArea::Type::Mapped:
|
|
new_vma.backing_memory += offset_in_vma;
|
|
break;
|
|
}
|
|
|
|
ASSERT(old_vma.CanBeMergedWith(new_vma));
|
|
|
|
return vma_map.emplace_hint(std::next(vma_handle), new_vma.base, new_vma);
|
|
}
|
|
|
|
MemoryManager::VMAIter MemoryManager::MergeAdjacent(VMAIter iter) {
|
|
const VMAIter next_vma{std::next(iter)};
|
|
if (next_vma != vma_map.end() && iter->second.CanBeMergedWith(next_vma->second)) {
|
|
iter->second.size += next_vma->second.size;
|
|
vma_map.erase(next_vma);
|
|
}
|
|
|
|
if (iter != vma_map.begin()) {
|
|
VMAIter prev_vma{std::prev(iter)};
|
|
if (prev_vma->second.CanBeMergedWith(iter->second)) {
|
|
prev_vma->second.size += iter->second.size;
|
|
vma_map.erase(iter);
|
|
iter = prev_vma;
|
|
}
|
|
}
|
|
|
|
return iter;
|
|
}
|
|
|
|
void MemoryManager::UpdatePageTableForVMA(const VirtualMemoryArea& vma) {
|
|
switch (vma.type) {
|
|
case VirtualMemoryArea::Type::Unmapped:
|
|
UnmapRegion(vma.base, vma.size);
|
|
break;
|
|
case VirtualMemoryArea::Type::Allocated:
|
|
MapMemoryRegion(vma.base, vma.size, nullptr, vma.backing_addr);
|
|
break;
|
|
case VirtualMemoryArea::Type::Mapped:
|
|
MapMemoryRegion(vma.base, vma.size, vma.backing_memory, vma.backing_addr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
} // namespace Tegra
|