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core: memory: Updates for new VMM.

This commit is contained in:
bunnei 2020-04-08 22:50:46 -04:00
parent 4c1812ae37
commit f7c03610e1
2 changed files with 53 additions and 114 deletions
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152
src/core/memory.cpp
View File

@ -14,9 +14,10 @@
#include "common/swap.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/device_memory.h"
#include "core/hle/kernel/memory/page_table.h"
#include "core/hle/kernel/physical_memory.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/vm_manager.h"
#include "core/memory.h"
#include "video_core/gpu.h"
@ -29,9 +30,9 @@ struct Memory::Impl {
explicit Impl(Core::System& system_) : system{system_} {}
void SetCurrentPageTable(Kernel::Process& process) {
current_page_table = &process.VMManager().page_table;
current_page_table = &process.PageTable().PageTableImpl();
const std::size_t address_space_width = process.VMManager().GetAddressSpaceWidth();
const std::size_t address_space_width = process.PageTable().GetAddressSpaceWidth();
system.ArmInterface(0).PageTableChanged(*current_page_table, address_space_width);
system.ArmInterface(1).PageTableChanged(*current_page_table, address_space_width);
@ -39,12 +40,7 @@ struct Memory::Impl {
system.ArmInterface(3).PageTableChanged(*current_page_table, address_space_width);
}
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset) {
MapMemoryRegion(page_table, base, size, memory.data() + offset);
}
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target) {
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, target, Common::PageType::Memory);
@ -52,46 +48,27 @@ struct Memory::Impl {
void MapIoRegion(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer mmio_handler) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr,
Common::PageType::Special);
const auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
const Common::SpecialRegion region{Common::SpecialRegion::Type::IODevice,
std::move(mmio_handler)};
page_table.special_regions.add(
std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
UNIMPLEMENTED();
}
void UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size) {
ASSERT_MSG((size & PAGE_MASK) == 0, "non-page aligned size: {:016X}", size);
ASSERT_MSG((base & PAGE_MASK) == 0, "non-page aligned base: {:016X}", base);
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, nullptr,
Common::PageType::Unmapped);
const auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
page_table.special_regions.erase(interval);
MapPages(page_table, base / PAGE_SIZE, size / PAGE_SIZE, 0, Common::PageType::Unmapped);
}
void AddDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
const auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
const Common::SpecialRegion region{Common::SpecialRegion::Type::DebugHook, std::move(hook)};
page_table.special_regions.add(
std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
UNIMPLEMENTED();
}
void RemoveDebugHook(Common::PageTable& page_table, VAddr base, u64 size,
Common::MemoryHookPointer hook) {
const auto interval = boost::icl::discrete_interval<VAddr>::closed(base, base + size - 1);
const Common::SpecialRegion region{Common::SpecialRegion::Type::DebugHook, std::move(hook)};
page_table.special_regions.subtract(
std::make_pair(interval, std::set<Common::SpecialRegion>{region}));
UNIMPLEMENTED();
}
bool IsValidVirtualAddress(const Kernel::Process& process, const VAddr vaddr) const {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
const u8* const page_pointer = page_table.pointers[vaddr >> PAGE_BITS];
if (page_pointer != nullptr) {
@ -113,55 +90,28 @@ struct Memory::Impl {
return IsValidVirtualAddress(*system.CurrentProcess(), vaddr);
}
/**
* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
* using a VMA from the current process
*/
u8* GetPointerFromVMA(const Kernel::Process& process, VAddr vaddr) {
const auto& vm_manager = process.VMManager();
u8* GetPointerFromRasterizerCachedMemory(VAddr vaddr) const {
const PAddr paddr{current_page_table->backing_addr[vaddr >> PAGE_BITS]};
const auto it = vm_manager.FindVMA(vaddr);
DEBUG_ASSERT(vm_manager.IsValidHandle(it));
u8* direct_pointer = nullptr;
const auto& vma = it->second;
switch (vma.type) {
case Kernel::VMAType::AllocatedMemoryBlock:
direct_pointer = vma.backing_block->data() + vma.offset;
break;
case Kernel::VMAType::BackingMemory:
direct_pointer = vma.backing_memory;
break;
case Kernel::VMAType::Free:
return nullptr;
default:
UNREACHABLE();
if (!paddr) {
return {};
}
return direct_pointer + (vaddr - vma.base);
return system.DeviceMemory().GetPointer(paddr) + vaddr;
}
/**
* Gets a pointer to the exact memory at the virtual address (i.e. not page aligned)
* using a VMA from the current process.
*/
u8* GetPointerFromVMA(VAddr vaddr) {
return GetPointerFromVMA(*system.CurrentProcess(), vaddr);
}
u8* GetPointer(const VAddr vaddr) {
u8* const page_pointer = current_page_table->pointers[vaddr >> PAGE_BITS];
if (page_pointer != nullptr) {
u8* GetPointer(const VAddr vaddr) const {
u8* const page_pointer{current_page_table->pointers[vaddr >> PAGE_BITS]};
if (page_pointer) {
return page_pointer + vaddr;
}
if (current_page_table->attributes[vaddr >> PAGE_BITS] ==
Common::PageType::RasterizerCachedMemory) {
return GetPointerFromVMA(vaddr);
return GetPointerFromRasterizerCachedMemory(vaddr);
}
LOG_ERROR(HW_Memory, "Unknown GetPointer @ 0x{:016X}", vaddr);
return nullptr;
return {};
}
u8 Read8(const VAddr addr) {
@ -213,7 +163,7 @@ struct Memory::Impl {
void ReadBlock(const Kernel::Process& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = src_addr >> PAGE_BITS;
@ -241,7 +191,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().FlushRegion(current_vaddr, copy_amount);
std::memcpy(dest_buffer, host_ptr, copy_amount);
break;
@ -259,7 +209,7 @@ struct Memory::Impl {
void ReadBlockUnsafe(const Kernel::Process& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = src_addr >> PAGE_BITS;
@ -287,7 +237,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
std::memcpy(dest_buffer, host_ptr, copy_amount);
break;
}
@ -312,7 +262,7 @@ struct Memory::Impl {
void WriteBlock(const Kernel::Process& process, const VAddr dest_addr, const void* src_buffer,
const std::size_t size) {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
@ -338,7 +288,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().InvalidateRegion(current_vaddr, copy_amount);
std::memcpy(host_ptr, src_buffer, copy_amount);
break;
@ -356,7 +306,7 @@ struct Memory::Impl {
void WriteBlockUnsafe(const Kernel::Process& process, const VAddr dest_addr,
const void* src_buffer, const std::size_t size) {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
@ -382,7 +332,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
std::memcpy(host_ptr, src_buffer, copy_amount);
break;
}
@ -406,7 +356,7 @@ struct Memory::Impl {
}
void ZeroBlock(const Kernel::Process& process, const VAddr dest_addr, const std::size_t size) {
const auto& page_table = process.VMManager().page_table;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
@ -432,7 +382,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().InvalidateRegion(current_vaddr, copy_amount);
std::memset(host_ptr, 0, copy_amount);
break;
@ -453,7 +403,7 @@ struct Memory::Impl {
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;
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = src_addr >> PAGE_BITS;
std::size_t page_offset = src_addr & PAGE_MASK;
@ -479,7 +429,7 @@ struct Memory::Impl {
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr = GetPointerFromVMA(process, current_vaddr);
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().FlushRegion(current_vaddr, copy_amount);
WriteBlock(process, dest_addr, host_ptr, copy_amount);
break;
@ -512,7 +462,7 @@ struct Memory::Impl {
u64 num_pages = ((vaddr + size - 1) >> PAGE_BITS) - (vaddr >> PAGE_BITS) + 1;
for (unsigned i = 0; i < num_pages; ++i, vaddr += PAGE_SIZE) {
Common::PageType& page_type = current_page_table->attributes[vaddr >> PAGE_BITS];
Common::PageType& page_type{current_page_table->attributes[vaddr >> PAGE_BITS]};
if (cached) {
// Switch page type to cached if now cached
@ -544,7 +494,7 @@ struct Memory::Impl {
// that this area is already unmarked as cached.
break;
case Common::PageType::RasterizerCachedMemory: {
u8* pointer = GetPointerFromVMA(vaddr & ~PAGE_MASK);
u8* pointer{GetPointerFromRasterizerCachedMemory(vaddr & ~PAGE_MASK)};
if (pointer == nullptr) {
// It's possible that this function has been called while updating the
// pagetable after unmapping a VMA. In that case the underlying VMA will no
@ -573,9 +523,9 @@ struct Memory::Impl {
* @param memory The memory to map.
* @param type The page type to map the memory as.
*/
void MapPages(Common::PageTable& page_table, VAddr base, u64 size, u8* memory,
void MapPages(Common::PageTable& page_table, VAddr base, u64 size, PAddr target,
Common::PageType type) {
LOG_DEBUG(HW_Memory, "Mapping {} onto {:016X}-{:016X}", fmt::ptr(memory), base * PAGE_SIZE,
LOG_DEBUG(HW_Memory, "Mapping {:016X} onto {:016X}-{:016X}", target, base * PAGE_SIZE,
(base + size) * PAGE_SIZE);
// During boot, current_page_table might not be set yet, in which case we need not flush
@ -593,19 +543,26 @@ struct Memory::Impl {
ASSERT_MSG(end <= page_table.pointers.size(), "out of range mapping at {:016X}",
base + page_table.pointers.size());
std::fill(page_table.attributes.begin() + base, page_table.attributes.begin() + end, type);
if (!target) {
while (base != end) {
page_table.pointers[base] = nullptr;
page_table.attributes[base] = type;
page_table.backing_addr[base] = 0;
if (memory == nullptr) {
std::fill(page_table.pointers.begin() + base, page_table.pointers.begin() + end,
memory);
base += 1;
}
} else {
while (base != end) {
page_table.pointers[base] = memory - (base << PAGE_BITS);
page_table.pointers[base] =
system.DeviceMemory().GetPointer(target) - (base << PAGE_BITS);
page_table.attributes[base] = type;
page_table.backing_addr[base] = target - (base << PAGE_BITS);
ASSERT_MSG(page_table.pointers[base],
"memory mapping base yield a nullptr within the table");
base += 1;
memory += PAGE_SIZE;
target += PAGE_SIZE;
}
}
}
@ -640,7 +597,7 @@ struct Memory::Impl {
ASSERT_MSG(false, "Mapped memory page without a pointer @ {:016X}", vaddr);
break;
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr = GetPointerFromVMA(vaddr);
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(vaddr)};
system.GPU().FlushRegion(vaddr, sizeof(T));
T value;
std::memcpy(&value, host_ptr, sizeof(T));
@ -682,7 +639,7 @@ struct Memory::Impl {
ASSERT_MSG(false, "Mapped memory page without a pointer @ {:016X}", vaddr);
break;
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr{GetPointerFromVMA(vaddr)};
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(vaddr)};
system.GPU().InvalidateRegion(vaddr, sizeof(T));
std::memcpy(host_ptr, &data, sizeof(T));
break;
@ -703,12 +660,7 @@ void Memory::SetCurrentPageTable(Kernel::Process& process) {
impl->SetCurrentPageTable(process);
}
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset) {
impl->MapMemoryRegion(page_table, base, size, memory, offset);
}
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target) {
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target) {
impl->MapMemoryRegion(page_table, base, size, target);
}

15
src/core/memory.h
View File

@ -66,19 +66,6 @@ public:
*/
void SetCurrentPageTable(Kernel::Process& process);
/**
* Maps an physical buffer onto a region of the emulated process address space.
*
* @param page_table The page table of the emulated process.
* @param base The address to start mapping at. Must be page-aligned.
* @param size The amount of bytes to map. Must be page-aligned.
* @param memory Physical buffer with the memory backing the mapping. Must be of length
* at least `size + offset`.
* @param offset The offset within the physical memory. Must be page-aligned.
*/
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size,
Kernel::PhysicalMemory& memory, VAddr offset);
/**
* Maps an allocated buffer onto a region of the emulated process address space.
*
@ -88,7 +75,7 @@ public:
* @param target Buffer with the memory backing the mapping. Must be of length at least
* `size`.
*/
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, u8* target);
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target);
/**
* Maps a region of the emulated process address space as a IO region.