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-rw-r--r--src/core/CMakeLists.txt2
-rw-r--r--src/core/hle/kernel/memory/memory_manager.cpp177
-rw-r--r--src/core/hle/kernel/memory/memory_manager.h97
3 files changed, 276 insertions, 0 deletions
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 9fc5bd84b..ff38c6cc2 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -159,6 +159,8 @@ add_library(core STATIC
hle/kernel/memory/memory_block.h
hle/kernel/memory/memory_block_manager.cpp
hle/kernel/memory/memory_block_manager.h
+ hle/kernel/memory/memory_manager.cpp
+ hle/kernel/memory/memory_manager.h
hle/kernel/memory/memory_types.h
hle/kernel/memory/page_linked_list.h
hle/kernel/memory/page_heap.cpp
diff --git a/src/core/hle/kernel/memory/memory_manager.cpp b/src/core/hle/kernel/memory/memory_manager.cpp
new file mode 100644
index 000000000..9c1bb981b
--- /dev/null
+++ b/src/core/hle/kernel/memory/memory_manager.cpp
@@ -0,0 +1,177 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/common_types.h"
+#include "common/scope_exit.h"
+#include "core/hle/kernel/errors.h"
+#include "core/hle/kernel/memory/memory_manager.h"
+#include "core/hle/kernel/memory/page_linked_list.h"
+
+namespace Kernel::Memory {
+
+std::size_t MemoryManager::Impl::Initialize(Pool new_pool, u64 start_address, u64 end_address) {
+ const std::size_t size{end_address - start_address};
+
+ // Calculate metadata sizes
+ const std::size_t ref_count_size{(size / PageSize) * sizeof(u16)};
+ const std::size_t optimize_map_size{(Common::AlignUp((size / PageSize), 64) / 64) *
+ sizeof(u64)};
+ const std::size_t manager_size{Common::AlignUp(optimize_map_size + ref_count_size, PageSize)};
+ const std::size_t page_heap_size{PageHeap::CalculateMetadataOverheadSize(size)};
+ const std::size_t total_metadata_size{manager_size + page_heap_size};
+ ASSERT(manager_size <= total_metadata_size);
+ ASSERT(Common::IsAligned(total_metadata_size, PageSize));
+
+ // Setup region
+ pool = new_pool;
+
+ // Initialize the manager's KPageHeap
+ heap.Initialize(start_address, size, page_heap_size);
+
+ // Free the memory to the heap
+ heap.Free(start_address, size / PageSize);
+
+ // Update the heap's used size
+ heap.UpdateUsedSize();
+
+ return total_metadata_size;
+}
+
+void MemoryManager::InitializeManager(Pool pool, u64 start_address, u64 end_address) {
+ ASSERT(pool < Pool::Count);
+ managers[static_cast<std::size_t>(pool)].Initialize(pool, start_address, end_address);
+}
+
+VAddr MemoryManager::AllocateContinuous(std::size_t num_pages, std::size_t align_pages, Pool pool,
+ Direction dir) {
+ // Early return if we're allocating no pages
+ if (num_pages == 0) {
+ return {};
+ }
+
+ // Lock the pool that we're allocating from
+ const std::size_t pool_index{static_cast<std::size_t>(pool)};
+ std::lock_guard lock{pool_locks[pool_index]};
+
+ // Choose a heap based on our page size request
+ const s32 heap_index{PageHeap::GetAlignedBlockIndex(num_pages, align_pages)};
+
+ // Loop, trying to iterate from each block
+ // TODO (bunnei): Support multiple managers
+ Impl& chosen_manager{managers[pool_index]};
+ VAddr allocated_block{chosen_manager.AllocateBlock(heap_index)};
+
+ // If we failed to allocate, quit now
+ if (!allocated_block) {
+ return {};
+ }
+
+ // If we allocated more than we need, free some
+ const std::size_t allocated_pages{PageHeap::GetBlockNumPages(heap_index)};
+ if (allocated_pages > num_pages) {
+ chosen_manager.Free(allocated_block + num_pages * PageSize, allocated_pages - num_pages);
+ }
+
+ return allocated_block;
+}
+
+ResultCode MemoryManager::Allocate(PageLinkedList& page_list, std::size_t num_pages, Pool pool,
+ Direction dir) {
+ ASSERT(page_list.GetNumPages() == 0);
+
+ // Early return if we're allocating no pages
+ if (num_pages == 0) {
+ return RESULT_SUCCESS;
+ }
+
+ // Lock the pool that we're allocating from
+ const std::size_t pool_index{static_cast<std::size_t>(pool)};
+ std::lock_guard lock{pool_locks[pool_index]};
+
+ // Choose a heap based on our page size request
+ const s32 heap_index{PageHeap::GetBlockIndex(num_pages)};
+ if (heap_index < 0) {
+ return ERR_OUT_OF_MEMORY;
+ }
+
+ // TODO (bunnei): Support multiple managers
+ Impl& chosen_manager{managers[pool_index]};
+
+ // Ensure that we don't leave anything un-freed
+ auto group_guard = detail::ScopeExit([&] {
+ for (const auto& it : page_list.Nodes()) {
+ const std::size_t num_pages{std::min(
+ it.GetNumPages(), (chosen_manager.GetEndAddress() - it.GetAddress()) / PageSize)};
+ chosen_manager.Free(it.GetAddress(), num_pages);
+ }
+ });
+
+ // Keep allocating until we've allocated all our pages
+ for (s32 index{heap_index}; index >= 0 && num_pages > 0; index--) {
+ const std::size_t pages_per_alloc{PageHeap::GetBlockNumPages(index)};
+
+ while (num_pages >= pages_per_alloc) {
+ // Allocate a block
+ VAddr allocated_block{chosen_manager.AllocateBlock(index)};
+ if (allocated_block == 0) {
+ break;
+ }
+
+ // Safely add it to our group
+ {
+ auto block_guard = detail::ScopeExit(
+ [&] { chosen_manager.Free(allocated_block, pages_per_alloc); });
+
+ if (const ResultCode result{page_list.AddBlock(allocated_block, pages_per_alloc)};
+ result.IsError()) {
+ return result;
+ }
+
+ block_guard.Cancel();
+ }
+
+ num_pages -= pages_per_alloc;
+ }
+ }
+
+ // Only succeed if we allocated as many pages as we wanted
+ ASSERT(num_pages >= 0);
+ if (num_pages) {
+ return ERR_OUT_OF_MEMORY;
+ }
+
+ // We succeeded!
+ group_guard.Cancel();
+ return RESULT_SUCCESS;
+}
+
+ResultCode MemoryManager::Free(PageLinkedList& page_list, std::size_t num_pages, Pool pool,
+ Direction dir) {
+ // Early return if we're freeing no pages
+ if (!num_pages) {
+ return RESULT_SUCCESS;
+ }
+
+ // Lock the pool that we're freeing from
+ const std::size_t pool_index{static_cast<std::size_t>(pool)};
+ std::lock_guard lock{pool_locks[pool_index]};
+
+ // TODO (bunnei): Support multiple managers
+ Impl& chosen_manager{managers[pool_index]};
+
+ // Free all of the pages
+ for (const auto& it : page_list.Nodes()) {
+ const std::size_t num_pages{std::min(
+ it.GetNumPages(), (chosen_manager.GetEndAddress() - it.GetAddress()) / PageSize)};
+ chosen_manager.Free(it.GetAddress(), num_pages);
+ }
+
+ return RESULT_SUCCESS;
+}
+
+} // namespace Kernel::Memory
diff --git a/src/core/hle/kernel/memory/memory_manager.h b/src/core/hle/kernel/memory/memory_manager.h
new file mode 100644
index 000000000..b078d7a5e
--- /dev/null
+++ b/src/core/hle/kernel/memory/memory_manager.h
@@ -0,0 +1,97 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <mutex>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "core/hle/kernel/memory/page_heap.h"
+#include "core/hle/result.h"
+
+namespace Kernel::Memory {
+
+class PageLinkedList;
+
+class MemoryManager final : NonCopyable {
+public:
+ enum class Pool : u32 {
+ Application = 0,
+ Applet = 1,
+ System = 2,
+ SystemNonSecure = 3,
+
+ Count,
+
+ Shift = 4,
+ Mask = (0xF << Shift),
+ };
+
+ enum class Direction : u32 {
+ FromFront = 0,
+ FromBack = 1,
+
+ Shift = 0,
+ Mask = (0xF << Shift),
+ };
+
+ MemoryManager() = default;
+
+ constexpr std::size_t GetSize(Pool pool) const {
+ return managers[static_cast<std::size_t>(pool)].GetSize();
+ }
+
+ void InitializeManager(Pool pool, u64 start_address, u64 end_address);
+ VAddr AllocateContinuous(std::size_t num_pages, std::size_t align_pages, Pool pool,
+ Direction dir = Direction::FromFront);
+ ResultCode Allocate(PageLinkedList& page_list, std::size_t num_pages, Pool pool,
+ Direction dir = Direction::FromFront);
+ ResultCode Free(PageLinkedList& page_list, std::size_t num_pages, Pool pool,
+ Direction dir = Direction::FromFront);
+
+ static constexpr std::size_t MaxManagerCount = 10;
+
+private:
+ class Impl final : NonCopyable {
+ private:
+ using RefCount = u16;
+
+ private:
+ PageHeap heap;
+ Pool pool{};
+
+ public:
+ Impl() = default;
+
+ std::size_t Initialize(Pool new_pool, u64 start_address, u64 end_address);
+
+ VAddr AllocateBlock(s32 index) {
+ return heap.AllocateBlock(index);
+ }
+
+ void Free(VAddr addr, std::size_t num_pages) {
+ heap.Free(addr, num_pages);
+ }
+
+ constexpr std::size_t GetSize() const {
+ return heap.GetSize();
+ }
+
+ constexpr VAddr GetAddress() const {
+ return heap.GetAddress();
+ }
+
+ constexpr VAddr GetEndAddress() const {
+ return heap.GetEndAddress();
+ }
+ };
+
+private:
+ std::array<std::mutex, static_cast<std::size_t>(Pool::Count)> pool_locks;
+ std::array<Impl, MaxManagerCount> managers;
+};
+
+} // namespace Kernel::Memory
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