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core: hle: kernel: Refactor Un/MapPhysicalMemory to remove unnecessary methods.

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This commit is contained in:
bunnei 2022-01-14 23:00:55 -08:00
parent b8b1b58f36
commit 6d8e498f76
2 changed files with 39 additions and 50 deletions
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87
src/core/hle/kernel/k_page_table.cpp
View file

@ -395,39 +395,12 @@ ResultCode KPageTable::UnmapProcessMemory(VAddr dst_addr, std::size_t size,
return ResultSuccess;
}
void KPageTable::MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end) {
auto node{page_linked_list.Nodes().begin()};
PAddr map_addr{node->GetAddress()};
std::size_t src_num_pages{node->GetNumPages()};
block_manager->IterateForRange(start, end, [&](const KMemoryInfo& info) {
if (info.state != KMemoryState::Free) {
return;
}
std::size_t dst_num_pages{GetSizeInRange(info, start, end) / PageSize};
VAddr dst_addr{GetAddressInRange(info, start)};
while (dst_num_pages) {
if (!src_num_pages) {
node = std::next(node);
map_addr = node->GetAddress();
src_num_pages = node->GetNumPages();
}
const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
Operate(dst_addr, num_pages, KMemoryPermission::UserReadWrite, OperationType::Map,
map_addr);
dst_addr += num_pages * PageSize;
map_addr += num_pages * PageSize;
src_num_pages -= num_pages;
dst_num_pages -= num_pages;
}
});
}
ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
// Lock the physical memory lock.
std::lock_guard phys_lk(map_physical_memory_lock);
// Lock the table.
std::lock_guard lock{page_table_lock};
std::size_t mapped_size{};
@ -463,7 +436,35 @@ ResultCode KPageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
// We succeeded, so commit the memory reservation.
memory_reservation.Commit();
MapPhysicalMemory(page_linked_list, addr, end_addr);
// Map the memory.
auto node{page_linked_list.Nodes().begin()};
PAddr map_addr{node->GetAddress()};
std::size_t src_num_pages{node->GetNumPages()};
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
if (info.state != KMemoryState::Free) {
return;
}
std::size_t dst_num_pages{GetSizeInRange(info, addr, end_addr) / PageSize};
VAddr dst_addr{GetAddressInRange(info, addr)};
while (dst_num_pages) {
if (!src_num_pages) {
node = std::next(node);
map_addr = node->GetAddress();
src_num_pages = node->GetNumPages();
}
const std::size_t num_pages{std::min(src_num_pages, dst_num_pages)};
Operate(dst_addr, num_pages, KMemoryPermission::UserReadWrite, OperationType::Map,
map_addr);
dst_addr += num_pages * PageSize;
map_addr += num_pages * PageSize;
src_num_pages -= num_pages;
dst_num_pages -= num_pages;
}
});
mapped_physical_memory_size += remaining_size;
@ -503,23 +504,8 @@ ResultCode KPageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
return ResultSuccess;
}
CASCADE_CODE(UnmapMemory(addr, size));
auto process{system.Kernel().CurrentProcess()};
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
mapped_physical_memory_size -= mapped_size;
return ResultSuccess;
}
ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
std::lock_guard lock{page_table_lock};
const VAddr end_addr{addr + size};
ResultCode result{ResultSuccess};
KPageLinkedList page_linked_list;
// Unmap each region within the range
KPageLinkedList page_linked_list;
block_manager->IterateForRange(addr, end_addr, [&](const KMemoryInfo& info) {
if (info.state == KMemoryState::Normal) {
const std::size_t block_size{GetSizeInRange(info, addr, end_addr)};
@ -535,7 +521,6 @@ ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
}
}
});
if (result.IsError()) {
return result;
}
@ -546,6 +531,10 @@ ResultCode KPageTable::UnmapMemory(VAddr addr, std::size_t size) {
block_manager->Update(addr, num_pages, KMemoryState::Free);
auto process{system.Kernel().CurrentProcess()};
process->GetResourceLimit()->Release(LimitableResource::PhysicalMemory, mapped_size);
mapped_physical_memory_size -= mapped_size;
return ResultSuccess;
}

2
src/core/hle/kernel/k_page_table.h
View file

@ -87,7 +87,6 @@ private:
ResultCode MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list);
void MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end);
bool IsRegionMapped(VAddr address, u64 size);
bool IsRegionContiguous(VAddr addr, u64 size) const;
void AddRegionToPages(VAddr start, std::size_t num_pages, KPageLinkedList& page_linked_list);
@ -147,6 +146,7 @@ private:
}
std::recursive_mutex page_table_lock;
std::mutex map_physical_memory_lock;
std::unique_ptr<KMemoryBlockManager> block_manager;
public: