mirror of
https://github.com/yuzu-emu/yuzu-android
synced 2024-12-29 03:51:22 -08:00
f1382cf0e7
This only encourages the use of the global system instance (which will be phased out long-term). Instead, we use the direct system function call directly to remove the appealing but discouraged short-hand.
546 lines
20 KiB
C++
546 lines
20 KiB
C++
// Copyright 2015 Citra Emulator Project
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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 <algorithm>
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#include <cstring>
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#include <optional>
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#include <utility>
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "common/page_table.h"
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#include "common/swap.h"
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#include "core/arm/arm_interface.h"
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#include "core/core.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/memory.h"
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#include "core/memory_setup.h"
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#include "video_core/gpu.h"
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namespace Memory {
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static Common::PageTable* current_page_table = nullptr;
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void SetCurrentPageTable(Kernel::Process& process) {
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current_page_table = &process.VMManager().page_table;
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const std::size_t address_space_width = process.VMManager().GetAddressSpaceWidth();
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auto& system = Core::System::GetInstance();
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system.ArmInterface(0).PageTableChanged(*current_page_table, address_space_width);
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system.ArmInterface(1).PageTableChanged(*current_page_table, address_space_width);
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system.ArmInterface(2).PageTableChanged(*current_page_table, address_space_width);
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system.ArmInterface(3).PageTableChanged(*current_page_table, address_space_width);
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}
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static void MapPages(Common::PageTable& page_table, VAddr base, u64 size, u8* memory,
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Common::PageType type) {
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LOG_DEBUG(HW_Memory, "Mapping {} onto {:016X}-{:016X}", fmt::ptr(memory), base * PAGE_SIZE,
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(base + size) * PAGE_SIZE);
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// During boot, current_page_table might not be set yet, in which case we need not flush
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if (Core::System::GetInstance().IsPoweredOn()) {
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auto& gpu = Core::System::GetInstance().GPU();
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for (u64 i = 0; i < size; i++) {
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const auto page = base + i;
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if (page_table.attributes[page] == Common::PageType::RasterizerCachedMemory) {
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gpu.FlushAndInvalidateRegion(page << PAGE_BITS, PAGE_SIZE);
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}
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}
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}
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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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std::fill(page_table.attributes.begin() + base, page_table.attributes.begin() + end, type);
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if (memory == nullptr) {
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std::fill(page_table.pointers.begin() + base, page_table.pointers.begin() + end, memory);
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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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base += 1;
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memory += PAGE_SIZE;
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}
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}
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}
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void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target) {
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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(page_table, base / PAGE_SIZE, size / PAGE_SIZE, target, Common::PageType::Memory);
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}
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void MapIoRegion(Common::PageTable& page_table, VAddr base, u64 size,
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Common::MemoryHookPointer mmio_handler) {
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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(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr, Common::PageType::Special);
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auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
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Common::SpecialRegion region{Common::SpecialRegion::Type::IODevice, std::move(mmio_handler)};
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page_table.special_regions.add(
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std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
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}
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void UnmapRegion(Common::PageTable& page_table, VAddr 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(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr, Common::PageType::Unmapped);
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auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
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page_table.special_regions.erase(interval);
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}
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void AddDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
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Common::MemoryHookPointer hook) {
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auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
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Common::SpecialRegion region{Common::SpecialRegion::Type::DebugHook, std::move(hook)};
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page_table.special_regions.add(
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std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
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}
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void RemoveDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
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Common::MemoryHookPointer hook) {
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auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
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Common::SpecialRegion region{Common::SpecialRegion::Type::DebugHook, std::move(hook)};
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page_table.special_regions.subtract(
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std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
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}
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/**
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* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
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* using a VMA from the current process
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*/
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static u8* GetPointerFromVMA(const Kernel::Process& process, VAddr vaddr) {
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const auto& vm_manager = process.VMManager();
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const auto it = vm_manager.FindVMA(vaddr);
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DEBUG_ASSERT(vm_manager.IsValidHandle(it));
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u8* direct_pointer = nullptr;
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const auto& vma = it->second;
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switch (vma.type) {
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case Kernel::VMAType::AllocatedMemoryBlock:
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direct_pointer = vma.backing_block->data() + vma.offset;
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break;
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case Kernel::VMAType::BackingMemory:
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direct_pointer = vma.backing_memory;
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break;
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case Kernel::VMAType::Free:
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return nullptr;
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default:
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UNREACHABLE();
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}
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return direct_pointer + (vaddr - vma.base);
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}
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/**
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* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
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* using a VMA from the current process.
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*/
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static u8* GetPointerFromVMA(VAddr vaddr) {
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return GetPointerFromVMA(*Core::System::GetInstance().CurrentProcess(), vaddr);
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}
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template <typename T>
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T Read(const VAddr vaddr) {
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const u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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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[vaddr & PAGE_MASK], sizeof(T));
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return value;
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}
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Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
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switch (type) {
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case Common::PageType::Unmapped:
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LOG_ERROR(HW_Memory, "Unmapped Read{} @ 0x{:08X}", sizeof(T) * 8, vaddr);
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return 0;
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case Common::PageType::Memory:
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ASSERT_MSG(false, "Mapped memory page without a pointer @ {:016X}", vaddr);
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break;
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case Common::PageType::RasterizerCachedMemory: {
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auto host_ptr{GetPointerFromVMA(vaddr)};
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Core::System::GetInstance().GPU().FlushRegion(ToCacheAddr(host_ptr), sizeof(T));
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T value;
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std::memcpy(&value, host_ptr, sizeof(T));
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return value;
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}
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default:
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UNREACHABLE();
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}
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return {};
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}
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template <typename T>
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void Write(const VAddr vaddr, const T data) {
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u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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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[vaddr & PAGE_MASK], &data, sizeof(T));
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return;
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}
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Common::PageType type = current_page_table->attributes[vaddr >> PAGE_BITS];
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switch (type) {
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case Common::PageType::Unmapped:
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LOG_ERROR(HW_Memory, "Unmapped Write{} 0x{:08X} @ 0x{:016X}", sizeof(data) * 8,
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static_cast<u32>(data), vaddr);
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return;
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case Common::PageType::Memory:
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ASSERT_MSG(false, "Mapped memory page without a pointer @ {:016X}", vaddr);
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break;
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case Common::PageType::RasterizerCachedMemory: {
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auto host_ptr{GetPointerFromVMA(vaddr)};
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Core::System::GetInstance().GPU().InvalidateRegion(ToCacheAddr(host_ptr), sizeof(T));
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std::memcpy(host_ptr, &data, sizeof(T));
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break;
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}
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default:
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UNREACHABLE();
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}
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}
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bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) {
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const auto& page_table = process.VMManager().page_table;
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const u8* page_pointer = page_table.pointers[vaddr >> PAGE_BITS];
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if (page_pointer)
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return true;
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if (page_table.attributes[vaddr >> PAGE_BITS] == Common::PageType::RasterizerCachedMemory)
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return true;
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if (page_table.attributes[vaddr >> PAGE_BITS] != Common::PageType::Special)
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return false;
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return false;
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}
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bool IsValidVirtualAddress(const VAddr vaddr) {
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return IsValidVirtualAddress(*Core::System::GetInstance().CurrentProcess(), vaddr);
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}
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bool IsKernelVirtualAddress(const VAddr vaddr) {
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return KERNEL_REGION_VADDR <= vaddr && vaddr < KERNEL_REGION_END;
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}
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u8* GetPointer(const VAddr vaddr) {
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u8* page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
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if (page_pointer) {
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return page_pointer + (vaddr & PAGE_MASK);
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}
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if (current_page_table->attributes[vaddr >> PAGE_BITS] ==
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Common::PageType::RasterizerCachedMemory) {
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return GetPointerFromVMA(vaddr);
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}
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LOG_ERROR(HW_Memory, "Unknown GetPointer @ 0x{:016X}", vaddr);
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return nullptr;
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}
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std::string ReadCString(VAddr vaddr, std::size_t max_length) {
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std::string string;
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string.reserve(max_length);
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for (std::size_t i = 0; i < max_length; ++i) {
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char c = Read8(vaddr);
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if (c == '\0')
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break;
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string.push_back(c);
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++vaddr;
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}
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string.shrink_to_fit();
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return string;
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}
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void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached) {
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if (vaddr == 0) {
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return;
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}
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// Iterate over a contiguous CPU address space, which corresponds to the specified GPU address
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// space, marking the region as un/cached. The region is marked un/cached at a granularity of
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// CPU pages, hence why we iterate on a CPU page basis (note: GPU page size is different). This
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// assumes the specified GPU address region is contiguous as well.
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u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1;
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for (unsigned i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) {
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Common::PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
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if (cached) {
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// Switch page type to cached if now cached
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switch (page_type) {
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case Common::PageType::Unmapped:
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// It is not necessary for a process to have this region mapped into its address
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// space, for example, a system module need not have a VRAM mapping.
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break;
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case Common::PageType::Memory:
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page_type = Common::PageType::RasterizerCachedMemory;
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current_page_table->pointers[vaddr >> PAGE_BITS] = nullptr;
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break;
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case Common::PageType::RasterizerCachedMemory:
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// There can be more than one GPU region mapped per CPU region, so it's common that
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// this area is already marked as cached.
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break;
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default:
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UNREACHABLE();
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}
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} else {
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// Switch page type to uncached if now uncached
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switch (page_type) {
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case Common::PageType::Unmapped:
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// It is not necessary for a process to have this region mapped into its address
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// space, for example, a system module need not have a VRAM mapping.
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break;
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case Common::PageType::Memory:
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// There can be more than one GPU region mapped per CPU region, so it's common that
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// this area is already unmarked as cached.
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break;
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case Common::PageType::RasterizerCachedMemory: {
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u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
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if (pointer == nullptr) {
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// It's possible that this function has been called while updating the pagetable
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// after unmapping a VMA. In that case the underlying VMA will no longer exist,
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// and we should just leave the pagetable entry blank.
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page_type = Common::PageType::Unmapped;
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} else {
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page_type = Common::PageType::Memory;
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current_page_table->pointers[vaddr >> PAGE_BITS] = pointer;
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}
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break;
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}
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default:
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UNREACHABLE();
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}
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}
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}
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}
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u8 Read8(const VAddr addr) {
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return Read<u8>(addr);
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}
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u16 Read16(const VAddr addr) {
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return Read<u16_le>(addr);
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}
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u32 Read32(const VAddr addr) {
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return Read<u32_le>(addr);
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}
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u64 Read64(const VAddr addr) {
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return Read<u64_le>(addr);
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}
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void ReadBlock(const Kernel::Process& process, const VAddr src_addr, void* dest_buffer,
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const std::size_t size) {
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const auto& page_table = process.VMManager().page_table;
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std::size_t remaining_size = size;
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std::size_t page_index = src_addr >> PAGE_BITS;
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std::size_t page_offset = src_addr & PAGE_MASK;
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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 current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
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switch (page_table.attributes[page_index]) {
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case Common::PageType::Unmapped: {
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LOG_ERROR(HW_Memory,
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"Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, src_addr, size);
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std::memset(dest_buffer, 0, copy_amount);
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break;
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}
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case Common::PageType::Memory: {
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DEBUG_ASSERT(page_table.pointers[page_index]);
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const u8* src_ptr = page_table.pointers[page_index] + page_offset;
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std::memcpy(dest_buffer, src_ptr, copy_amount);
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break;
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}
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case Common::PageType::RasterizerCachedMemory: {
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const auto& host_ptr{GetPointerFromVMA(process, current_vaddr)};
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Core::System::GetInstance().GPU().FlushRegion(ToCacheAddr(host_ptr), copy_amount);
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std::memcpy(dest_buffer, host_ptr, copy_amount);
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break;
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}
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default:
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UNREACHABLE();
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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 ReadBlock(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
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ReadBlock(*Core::System::GetInstance().CurrentProcess(), src_addr, dest_buffer, size);
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}
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void Write8(const VAddr addr, const u8 data) {
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Write<u8>(addr, data);
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}
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void Write16(const VAddr addr, const u16 data) {
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Write<u16_le>(addr, data);
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}
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void Write32(const VAddr addr, const u32 data) {
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Write<u32_le>(addr, data);
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}
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void Write64(const VAddr addr, const u64 data) {
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Write<u64_le>(addr, data);
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}
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void WriteBlock(const Kernel::Process& process, const VAddr dest_addr, const void* src_buffer,
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const std::size_t size) {
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const auto& page_table = process.VMManager().page_table;
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std::size_t remaining_size = size;
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std::size_t page_index = dest_addr >> PAGE_BITS;
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std::size_t page_offset = dest_addr & PAGE_MASK;
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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 current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
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switch (page_table.attributes[page_index]) {
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case Common::PageType::Unmapped: {
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LOG_ERROR(HW_Memory,
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"Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
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current_vaddr, dest_addr, size);
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break;
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}
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case Common::PageType::Memory: {
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DEBUG_ASSERT(page_table.pointers[page_index]);
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u8* dest_ptr = page_table.pointers[page_index] + page_offset;
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std::memcpy(dest_ptr, src_buffer, copy_amount);
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break;
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}
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case Common::PageType::RasterizerCachedMemory: {
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const auto& host_ptr{GetPointerFromVMA(process, current_vaddr)};
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Core::System::GetInstance().GPU().InvalidateRegion(ToCacheAddr(host_ptr), copy_amount);
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std::memcpy(host_ptr, src_buffer, copy_amount);
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break;
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}
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default:
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UNREACHABLE();
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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 WriteBlock(const VAddr dest_addr, const void* src_buffer, const std::size_t size) {
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WriteBlock(*Core::System::GetInstance().CurrentProcess(), dest_addr, src_buffer, size);
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}
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void ZeroBlock(const Kernel::Process& process, const VAddr dest_addr, const std::size_t size) {
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const auto& page_table = process.VMManager().page_table;
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std::size_t remaining_size = size;
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std::size_t page_index = dest_addr >> PAGE_BITS;
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std::size_t page_offset = dest_addr & PAGE_MASK;
|
|
|
|
while (remaining_size > 0) {
|
|
const std::size_t copy_amount =
|
|
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
|
const VAddr current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
|
|
|
switch (page_table.attributes[page_index]) {
|
|
case Common::PageType::Unmapped: {
|
|
LOG_ERROR(HW_Memory,
|
|
"Unmapped ZeroBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
|
current_vaddr, dest_addr, size);
|
|
break;
|
|
}
|
|
case Common::PageType::Memory: {
|
|
DEBUG_ASSERT(page_table.pointers[page_index]);
|
|
|
|
u8* dest_ptr = page_table.pointers[page_index] + page_offset;
|
|
std::memset(dest_ptr, 0, copy_amount);
|
|
break;
|
|
}
|
|
case Common::PageType::RasterizerCachedMemory: {
|
|
const auto& host_ptr{GetPointerFromVMA(process, current_vaddr)};
|
|
Core::System::GetInstance().GPU().InvalidateRegion(ToCacheAddr(host_ptr), copy_amount);
|
|
std::memset(host_ptr, 0, copy_amount);
|
|
break;
|
|
}
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
|
|
page_index++;
|
|
page_offset = 0;
|
|
remaining_size -= copy_amount;
|
|
}
|
|
}
|
|
|
|
void CopyBlock(const Kernel::Process& process, VAddr dest_addr, VAddr src_addr,
|
|
const std::size_t size) {
|
|
const auto& page_table = process.VMManager().page_table;
|
|
std::size_t remaining_size = size;
|
|
std::size_t page_index = src_addr >> PAGE_BITS;
|
|
std::size_t page_offset = src_addr & PAGE_MASK;
|
|
|
|
while (remaining_size > 0) {
|
|
const std::size_t copy_amount =
|
|
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
|
|
const VAddr current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
|
|
|
|
switch (page_table.attributes[page_index]) {
|
|
case Common::PageType::Unmapped: {
|
|
LOG_ERROR(HW_Memory,
|
|
"Unmapped CopyBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
|
|
current_vaddr, src_addr, size);
|
|
ZeroBlock(process, dest_addr, copy_amount);
|
|
break;
|
|
}
|
|
case Common::PageType::Memory: {
|
|
DEBUG_ASSERT(page_table.pointers[page_index]);
|
|
const u8* src_ptr = page_table.pointers[page_index] + page_offset;
|
|
WriteBlock(process, dest_addr, src_ptr, copy_amount);
|
|
break;
|
|
}
|
|
case Common::PageType::RasterizerCachedMemory: {
|
|
const auto& host_ptr{GetPointerFromVMA(process, current_vaddr)};
|
|
Core::System::GetInstance().GPU().FlushRegion(ToCacheAddr(host_ptr), copy_amount);
|
|
WriteBlock(process, dest_addr, host_ptr, copy_amount);
|
|
break;
|
|
}
|
|
default:
|
|
UNREACHABLE();
|
|
}
|
|
|
|
page_index++;
|
|
page_offset = 0;
|
|
dest_addr += static_cast<VAddr>(copy_amount);
|
|
src_addr += static_cast<VAddr>(copy_amount);
|
|
remaining_size -= copy_amount;
|
|
}
|
|
}
|
|
|
|
void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size) {
|
|
CopyBlock(*Core::System::GetInstance().CurrentProcess(), dest_addr, src_addr, size);
|
|
}
|
|
|
|
} // namespace Memory
|