mirror of
https://github.com/yuzu-mirror/yuzu.git
synced 2024-09-19 13:09:57 +01:00
580 lines
20 KiB
C++
580 lines
20 KiB
C++
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <atomic>
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#include <limits>
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#include <memory>
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#include <type_traits>
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#include "common/address_space.h"
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#include "common/address_space.inc"
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/div_ceil.h"
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#include "common/scope_exit.h"
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#include "core/device_memory.h"
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#include "core/device_memory_manager.h"
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#include "core/memory.h"
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namespace Core {
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namespace {
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class PhysicalAddressContainer {
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public:
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PhysicalAddressContainer() = default;
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~PhysicalAddressContainer() = default;
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void GatherValues(u32 start_entry, Common::ScratchBuffer<u32>& buffer) {
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buffer.resize(8);
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buffer.resize(0);
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size_t index = 0;
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const auto add_value = [&](u32 value) {
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buffer[index] = value;
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index++;
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buffer.resize(index);
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};
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u32 iter_entry = start_entry;
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Entry* current = &storage[iter_entry - 1];
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add_value(current->value);
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while (current->next_entry != 0) {
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iter_entry = current->next_entry;
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current = &storage[iter_entry - 1];
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add_value(current->value);
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}
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}
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u32 Register(u32 value) {
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return RegisterImplementation(value);
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}
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void Register(u32 value, u32 start_entry) {
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auto entry_id = RegisterImplementation(value);
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u32 iter_entry = start_entry;
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Entry* current = &storage[iter_entry - 1];
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while (current->next_entry != 0) {
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iter_entry = current->next_entry;
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current = &storage[iter_entry - 1];
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}
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current->next_entry = entry_id;
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}
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std::pair<bool, u32> Unregister(u32 value, u32 start_entry) {
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u32 iter_entry = start_entry;
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Entry* previous{};
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Entry* current = &storage[iter_entry - 1];
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Entry* next{};
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bool more_than_one_remaining = false;
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u32 result_start{start_entry};
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size_t count = 0;
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while (current->value != value) {
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count++;
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previous = current;
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iter_entry = current->next_entry;
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current = &storage[iter_entry - 1];
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}
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// Find next
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u32 next_entry = current->next_entry;
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if (next_entry != 0) {
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next = &storage[next_entry - 1];
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more_than_one_remaining = next->next_entry != 0 || previous != nullptr;
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}
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if (previous) {
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previous->next_entry = next_entry;
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} else {
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result_start = next_entry;
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}
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free_entries.emplace_back(iter_entry);
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return std::make_pair(more_than_one_remaining || count > 1, result_start);
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}
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u32 ReleaseEntry(u32 start_entry) {
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Entry* current = &storage[start_entry - 1];
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free_entries.emplace_back(start_entry);
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return current->value;
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}
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private:
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u32 RegisterImplementation(u32 value) {
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auto entry_id = GetNewEntry();
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auto& entry = storage[entry_id - 1];
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entry.next_entry = 0;
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entry.value = value;
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return entry_id;
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}
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u32 GetNewEntry() {
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if (!free_entries.empty()) {
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u32 result = free_entries.front();
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free_entries.pop_front();
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return result;
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}
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storage.emplace_back();
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u32 new_entry = static_cast<u32>(storage.size());
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return new_entry;
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}
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struct Entry {
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u32 next_entry{};
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u32 value{};
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};
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std::deque<Entry> storage;
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std::deque<u32> free_entries;
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};
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struct EmptyAllocator {
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EmptyAllocator([[maybe_unused]] DAddr address) {}
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};
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} // namespace
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template <typename DTraits>
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struct DeviceMemoryManagerAllocator {
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static constexpr bool supports_pinning = DTraits::supports_pinning;
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static constexpr size_t device_virtual_bits = DTraits::device_virtual_bits;
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static constexpr size_t pin_bits = 32;
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static constexpr DAddr first_address = 1ULL << Memory::YUZU_PAGEBITS;
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static constexpr DAddr max_pin_area = supports_pinning ? 1ULL << pin_bits : first_address;
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static constexpr DAddr max_device_area = 1ULL << device_virtual_bits;
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DeviceMemoryManagerAllocator()
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: pin_allocator(first_address),
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main_allocator(supports_pinning ? 1ULL << pin_bits : first_address) {}
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std::conditional_t<supports_pinning, Common::FlatAllocator<DAddr, 0, pin_bits>, EmptyAllocator>
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pin_allocator;
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Common::FlatAllocator<DAddr, 0, device_virtual_bits> main_allocator;
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PhysicalAddressContainer multi_dev_address;
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/// Returns true when vaddr -> vaddr+size is fully contained in the buffer
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template <bool pin_area>
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[[nodiscard]] bool IsInBounds(VAddr addr, u64 size) const noexcept {
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if constexpr (pin_area) {
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return addr >= 0 && addr + size <= max_pin_area;
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} else {
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return addr >= max_pin_area && addr + size <= max_device_area;
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}
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}
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DAddr Allocate(size_t size) {
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return main_allocator.Allocate(size);
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}
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DAddr AllocatePinned(size_t size) {
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if constexpr (supports_pinning) {
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return pin_allocator.Allocate(size);
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} else {
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return DAddr{};
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}
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}
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void DoInRange(DAddr address, size_t size, auto pin_func, auto main_func) {
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if (IsInBounds<true>(address, size)) {
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pin_func(address, size);
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return;
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}
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if (IsInBounds<false>(address, size)) {
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main_func(address, size);
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return;
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}
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DAddr end_size = address + size - max_pin_area;
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DAddr end_size2 = max_pin_area - address;
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pin_func(address, end_size2);
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main_func(max_pin_area, end_size);
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}
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void AllocateFixed(DAddr b_address, size_t b_size) {
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if constexpr (supports_pinning) {
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DoInRange(
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b_address, b_size,
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[this](DAddr address, size_t size) { pin_allocator.AllocateFixed(address, size); },
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[this](DAddr address, size_t size) {
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main_allocator.AllocateFixed(address, size);
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});
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} else {
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main_allocator.AllocateFixed(b_address, b_size);
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}
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}
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void Free(DAddr b_address, size_t b_size) {
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if constexpr (supports_pinning) {
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DoInRange(
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b_address, b_size,
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[this](DAddr address, size_t size) { pin_allocator.Free(address, size); },
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[this](DAddr address, size_t size) { main_allocator.Free(address, size); });
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} else {
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main_allocator.Free(b_address, b_size);
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}
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}
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};
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template <typename Traits>
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DeviceMemoryManager<Traits>::DeviceMemoryManager(const DeviceMemory& device_memory_)
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: physical_base{reinterpret_cast<const uintptr_t>(device_memory_.buffer.BackingBasePointer())},
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interface{nullptr}, compressed_physical_ptr(device_as_size >> Memory::YUZU_PAGEBITS),
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compressed_device_addr(1ULL << (physical_max_bits - Memory::YUZU_PAGEBITS)),
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cpu_backing_address(device_as_size >> Memory::YUZU_PAGEBITS) {
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impl = std::make_unique<DeviceMemoryManagerAllocator<Traits>>();
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cached_pages = std::make_unique<CachedPages>();
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for (size_t i = 0; i < 1ULL << (33 - 12); i++) {
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compressed_device_addr[i] = 0;
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}
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}
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template <typename Traits>
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DeviceMemoryManager<Traits>::~DeviceMemoryManager() = default;
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template <typename Traits>
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void DeviceMemoryManager<Traits>::BindInterface(DeviceInterface* interface_) {
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interface = interface_;
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}
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template <typename Traits>
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DAddr DeviceMemoryManager<Traits>::Allocate(size_t size) {
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return impl->Allocate(size);
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::AllocateFixed(DAddr start, size_t size) {
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return impl->AllocateFixed(start, size);
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}
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template <typename Traits>
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DAddr DeviceMemoryManager<Traits>::AllocatePinned(size_t size) {
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return impl->AllocatePinned(size);
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::Free(DAddr start, size_t size) {
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impl->Free(start, size);
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::Map(DAddr address, VAddr virtual_address, size_t size,
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size_t process_id) {
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Core::Memory::Memory* process_memory = registered_processes[process_id];
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size_t start_page_d = address >> Memory::YUZU_PAGEBITS;
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size_t num_pages = Common::AlignUp(size, Memory::YUZU_PAGESIZE) >> Memory::YUZU_PAGEBITS;
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std::scoped_lock lk(mapping_guard);
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for (size_t i = 0; i < num_pages; i++) {
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const VAddr new_vaddress = virtual_address + i * Memory::YUZU_PAGESIZE;
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auto* ptr = process_memory->GetPointerSilent(Common::ProcessAddress(new_vaddress));
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if (ptr == nullptr) [[unlikely]] {
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compressed_physical_ptr[start_page_d + i] = 0;
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continue;
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}
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auto phys_addr = static_cast<u32>(GetRawPhysicalAddr(ptr) >> Memory::YUZU_PAGEBITS) + 1U;
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compressed_physical_ptr[start_page_d + i] = phys_addr;
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InsertCPUBacking(start_page_d + i, new_vaddress, process_id);
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const u32 base_dev = compressed_device_addr[phys_addr - 1U];
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const u32 new_dev = static_cast<u32>(start_page_d + i);
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if (base_dev == 0) [[likely]] {
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compressed_device_addr[phys_addr - 1U] = new_dev;
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continue;
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}
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u32 start_id = base_dev & MULTI_MASK;
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if ((base_dev >> MULTI_FLAG_BITS) == 0) {
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start_id = impl->multi_dev_address.Register(base_dev);
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compressed_device_addr[phys_addr - 1U] = MULTI_FLAG | start_id;
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}
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impl->multi_dev_address.Register(new_dev, start_id);
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}
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::Unmap(DAddr address, size_t size) {
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size_t start_page_d = address >> Memory::YUZU_PAGEBITS;
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size_t num_pages = Common::AlignUp(size, Memory::YUZU_PAGESIZE) >> Memory::YUZU_PAGEBITS;
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interface->InvalidateRegion(address, size);
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std::scoped_lock lk(mapping_guard);
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for (size_t i = 0; i < num_pages; i++) {
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auto phys_addr = compressed_physical_ptr[start_page_d + i];
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compressed_physical_ptr[start_page_d + i] = 0;
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cpu_backing_address[start_page_d + i] = 0;
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if (phys_addr != 0) [[likely]] {
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const u32 base_dev = compressed_device_addr[phys_addr - 1U];
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if ((base_dev >> MULTI_FLAG_BITS) == 0) [[likely]] {
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compressed_device_addr[phys_addr - 1] = 0;
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continue;
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}
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const auto [more_entries, new_start] = impl->multi_dev_address.Unregister(
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static_cast<u32>(start_page_d + i), base_dev & MULTI_MASK);
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if (!more_entries) {
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compressed_device_addr[phys_addr - 1] =
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impl->multi_dev_address.ReleaseEntry(new_start);
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continue;
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}
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compressed_device_addr[phys_addr - 1] = new_start | MULTI_FLAG;
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}
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}
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::InnerGatherDeviceAddresses(Common::ScratchBuffer<u32>& buffer,
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PAddr address) {
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size_t phys_addr = address >> page_bits;
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std::scoped_lock lk(mapping_guard);
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u32 backing = compressed_device_addr[phys_addr];
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if ((backing >> MULTI_FLAG_BITS) != 0) {
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impl->multi_dev_address.GatherValues(backing & MULTI_MASK, buffer);
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return;
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}
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buffer.resize(1);
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buffer[0] = backing;
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}
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template <typename Traits>
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template <typename T>
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T* DeviceMemoryManager<Traits>::GetPointer(DAddr address) {
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const size_t index = address >> Memory::YUZU_PAGEBITS;
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const size_t offset = address & Memory::YUZU_PAGEMASK;
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auto phys_addr = compressed_physical_ptr[index];
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if (phys_addr == 0) [[unlikely]] {
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return nullptr;
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}
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return GetPointerFromRaw<T>(
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static_cast<PAddr>(((phys_addr - 1) << Memory::YUZU_PAGEBITS) + offset));
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}
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template <typename Traits>
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template <typename T>
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const T* DeviceMemoryManager<Traits>::GetPointer(DAddr address) const {
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const size_t index = address >> Memory::YUZU_PAGEBITS;
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const size_t offset = address & Memory::YUZU_PAGEMASK;
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auto phys_addr = compressed_physical_ptr[index];
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if (phys_addr == 0) [[unlikely]] {
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return nullptr;
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}
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return GetPointerFromRaw<T>(
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static_cast<PAddr>(((phys_addr - 1) << Memory::YUZU_PAGEBITS) + offset));
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}
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template <typename Traits>
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template <typename T>
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void DeviceMemoryManager<Traits>::Write(DAddr address, T value) {
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T* ptr = GetPointer<T>(address);
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if (!ptr) [[unlikely]] {
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return;
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}
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std::memcpy(ptr, &value, sizeof(T));
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}
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template <typename Traits>
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template <typename T>
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T DeviceMemoryManager<Traits>::Read(DAddr address) const {
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const T* ptr = GetPointer<T>(address);
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T result{};
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if (!ptr) [[unlikely]] {
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return result;
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}
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std::memcpy(&result, ptr, sizeof(T));
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return result;
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::WalkBlock(DAddr addr, std::size_t size, auto on_unmapped,
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auto on_memory, auto increment) {
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std::size_t remaining_size = size;
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std::size_t page_index = addr >> Memory::YUZU_PAGEBITS;
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std::size_t page_offset = addr & Memory::YUZU_PAGEMASK;
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while (remaining_size) {
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const std::size_t copy_amount =
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std::min(static_cast<std::size_t>(Memory::YUZU_PAGESIZE) - page_offset, remaining_size);
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const auto current_vaddr =
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static_cast<u64>((page_index << Memory::YUZU_PAGEBITS) + page_offset);
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SCOPE_EXIT({
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page_index++;
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page_offset = 0;
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increment(copy_amount);
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remaining_size -= copy_amount;
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});
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auto phys_addr = compressed_physical_ptr[page_index];
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if (phys_addr == 0) {
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on_unmapped(copy_amount, current_vaddr);
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continue;
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}
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auto* mem_ptr = GetPointerFromRaw<u8>(
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static_cast<PAddr>(((phys_addr - 1) << Memory::YUZU_PAGEBITS) + page_offset));
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on_memory(copy_amount, mem_ptr);
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}
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::ReadBlock(DAddr address, void* dest_pointer, size_t size) {
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interface->FlushRegion(address, size);
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WalkBlock(
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address, size,
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[&](size_t copy_amount, DAddr current_vaddr) {
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LOG_ERROR(
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HW_Memory,
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"Unmapped Device ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, address, size);
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std::memset(dest_pointer, 0, copy_amount);
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},
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[&](size_t copy_amount, const u8* const src_ptr) {
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std::memcpy(dest_pointer, src_ptr, copy_amount);
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},
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[&](const std::size_t copy_amount) {
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dest_pointer = static_cast<u8*>(dest_pointer) + copy_amount;
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});
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::WriteBlock(DAddr address, const void* src_pointer, size_t size) {
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WalkBlock(
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address, size,
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[&](size_t copy_amount, DAddr current_vaddr) {
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LOG_ERROR(
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HW_Memory,
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"Unmapped Device WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, address, size);
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},
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[&](size_t copy_amount, u8* const dst_ptr) {
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std::memcpy(dst_ptr, src_pointer, copy_amount);
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},
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[&](const std::size_t copy_amount) {
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src_pointer = static_cast<const u8*>(src_pointer) + copy_amount;
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});
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interface->InvalidateRegion(address, size);
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::ReadBlockUnsafe(DAddr address, void* dest_pointer, size_t size) {
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WalkBlock(
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address, size,
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[&](size_t copy_amount, DAddr current_vaddr) {
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LOG_ERROR(
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HW_Memory,
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"Unmapped Device ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, address, size);
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std::memset(dest_pointer, 0, copy_amount);
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},
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[&](size_t copy_amount, const u8* const src_ptr) {
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std::memcpy(dest_pointer, src_ptr, copy_amount);
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},
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[&](const std::size_t copy_amount) {
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dest_pointer = static_cast<u8*>(dest_pointer) + copy_amount;
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});
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}
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template <typename Traits>
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void DeviceMemoryManager<Traits>::WriteBlockUnsafe(DAddr address, const void* src_pointer,
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size_t size) {
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WalkBlock(
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address, size,
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[&](size_t copy_amount, DAddr current_vaddr) {
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LOG_ERROR(
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HW_Memory,
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"Unmapped Device WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, address, size);
|
|
},
|
|
[&](size_t copy_amount, u8* const dst_ptr) {
|
|
std::memcpy(dst_ptr, src_pointer, copy_amount);
|
|
},
|
|
[&](const std::size_t copy_amount) {
|
|
src_pointer = static_cast<const u8*>(src_pointer) + copy_amount;
|
|
});
|
|
}
|
|
|
|
template <typename Traits>
|
|
size_t DeviceMemoryManager<Traits>::RegisterProcess(Memory::Memory* memory_interface) {
|
|
size_t new_id;
|
|
if (!id_pool.empty()) {
|
|
new_id = id_pool.front();
|
|
id_pool.pop_front();
|
|
registered_processes[new_id] = memory_interface;
|
|
} else {
|
|
registered_processes.emplace_back(memory_interface);
|
|
new_id = registered_processes.size() - 1U;
|
|
}
|
|
return new_id;
|
|
}
|
|
|
|
template <typename Traits>
|
|
void DeviceMemoryManager<Traits>::UnregisterProcess(size_t id) {
|
|
registered_processes[id] = nullptr;
|
|
id_pool.push_front(id);
|
|
}
|
|
|
|
template <typename Traits>
|
|
void DeviceMemoryManager<Traits>::UpdatePagesCachedCount(DAddr addr, size_t size, s32 delta) {
|
|
bool locked = false;
|
|
auto lock = [&] {
|
|
if (!locked) {
|
|
counter_guard.lock();
|
|
locked = true;
|
|
}
|
|
};
|
|
SCOPE_EXIT({
|
|
if (locked) {
|
|
counter_guard.unlock();
|
|
}
|
|
});
|
|
u64 uncache_begin = 0;
|
|
u64 cache_begin = 0;
|
|
u64 uncache_bytes = 0;
|
|
u64 cache_bytes = 0;
|
|
const auto* MarkRegionCaching = &DeviceMemoryManager<Traits>::DeviceMethods::MarkRegionCaching;
|
|
|
|
std::atomic_thread_fence(std::memory_order_acquire);
|
|
const size_t page_end = Common::DivCeil(addr + size, Memory::YUZU_PAGESIZE);
|
|
size_t page = addr >> Memory::YUZU_PAGEBITS;
|
|
auto [process_id, base_vaddress] = ExtractCPUBacking(page);
|
|
size_t vpage = base_vaddress >> Memory::YUZU_PAGEBITS;
|
|
auto* memory_interface = registered_processes[process_id];
|
|
for (; page != page_end; ++page) {
|
|
std::atomic_uint16_t& count = cached_pages->at(page >> 2).Count(page);
|
|
|
|
if (delta > 0) {
|
|
ASSERT_MSG(count.load(std::memory_order::relaxed) < std::numeric_limits<u16>::max(),
|
|
"Count may overflow!");
|
|
} else if (delta < 0) {
|
|
ASSERT_MSG(count.load(std::memory_order::relaxed) > 0, "Count may underflow!");
|
|
} else {
|
|
ASSERT_MSG(false, "Delta must be non-zero!");
|
|
}
|
|
|
|
// Adds or subtracts 1, as count is a unsigned 8-bit value
|
|
count.fetch_add(static_cast<u16>(delta), std::memory_order_release);
|
|
|
|
// Assume delta is either -1 or 1
|
|
if (count.load(std::memory_order::relaxed) == 0) {
|
|
if (uncache_bytes == 0) {
|
|
uncache_begin = vpage;
|
|
}
|
|
uncache_bytes += Memory::YUZU_PAGESIZE;
|
|
} else if (uncache_bytes > 0) {
|
|
lock();
|
|
MarkRegionCaching(memory_interface, uncache_begin << Memory::YUZU_PAGEBITS,
|
|
uncache_bytes, false);
|
|
uncache_bytes = 0;
|
|
}
|
|
if (count.load(std::memory_order::relaxed) == 1 && delta > 0) {
|
|
if (cache_bytes == 0) {
|
|
cache_begin = vpage;
|
|
}
|
|
cache_bytes += Memory::YUZU_PAGESIZE;
|
|
} else if (cache_bytes > 0) {
|
|
lock();
|
|
MarkRegionCaching(memory_interface, cache_begin << Memory::YUZU_PAGEBITS, cache_bytes,
|
|
true);
|
|
cache_bytes = 0;
|
|
}
|
|
vpage++;
|
|
}
|
|
if (uncache_bytes > 0) {
|
|
lock();
|
|
MarkRegionCaching(memory_interface, uncache_begin << Memory::YUZU_PAGEBITS, uncache_bytes,
|
|
false);
|
|
}
|
|
if (cache_bytes > 0) {
|
|
lock();
|
|
MarkRegionCaching(memory_interface, cache_begin << Memory::YUZU_PAGEBITS, cache_bytes,
|
|
true);
|
|
}
|
|
}
|
|
|
|
} // namespace Core
|