From 343eaecd388dc688cea18d754ad2e10f741d0a2e Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Sat, 20 Mar 2021 00:53:00 -0700
Subject: hle: kernel: k_memory_layout: Derive memory regions based on board
layout.
---
src/core/hle/kernel/kernel.cpp | 319 +++++++++++++++++++++++++++++++++++++----
1 file changed, 293 insertions(+), 26 deletions(-)
(limited to 'src/core/hle/kernel/kernel.cpp')
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index 48916df179..257d4bb83b 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -1,4 +1,4 @@
-// Copyright 2014 Citra Emulator Project
+// Copyright 2021 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
@@ -12,6 +12,7 @@
#include <utility>
#include "common/assert.h"
+#include "common/common_sizes.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/thread.h"
@@ -269,44 +270,310 @@ struct KernelCore::Impl {
}
void InitializeMemoryLayout() {
- // Initialize memory layout
- constexpr KMemoryLayout layout{KMemoryLayout::GetDefaultLayout()};
+ KMemoryLayout memory_layout;
+
+ // Insert the root region for the virtual memory tree, from which all other regions will
+ // derive.
+ memory_layout.GetVirtualMemoryRegionTree().InsertDirectly(
+ KernelVirtualAddressSpaceBase,
+ KernelVirtualAddressSpaceBase + KernelVirtualAddressSpaceSize - 1);
+
+ // Insert the root region for the physical memory tree, from which all other regions will
+ // derive.
+ memory_layout.GetPhysicalMemoryRegionTree().InsertDirectly(
+ KernelPhysicalAddressSpaceBase,
+ KernelPhysicalAddressSpaceBase + KernelPhysicalAddressSpaceSize - 1);
+
+ // Save start and end for ease of use.
+ const VAddr code_start_virt_addr = KernelVirtualAddressCodeBase;
+ const VAddr code_end_virt_addr = KernelVirtualAddressCodeEnd;
+
+ // Setup the containing kernel region.
+ constexpr size_t KernelRegionSize = Size_1_GB;
+ constexpr size_t KernelRegionAlign = Size_1_GB;
+ constexpr VAddr kernel_region_start =
+ Common::AlignDown(code_start_virt_addr, KernelRegionAlign);
+ size_t kernel_region_size = KernelRegionSize;
+ if (!(kernel_region_start + KernelRegionSize - 1 <= KernelVirtualAddressSpaceLast)) {
+ kernel_region_size = KernelVirtualAddressSpaceEnd - kernel_region_start;
+ }
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ kernel_region_start, kernel_region_size, KMemoryRegionType_Kernel));
+
+ // Setup the code region.
+ constexpr size_t CodeRegionAlign = PageSize;
+ constexpr VAddr code_region_start =
+ Common::AlignDown(code_start_virt_addr, CodeRegionAlign);
+ constexpr VAddr code_region_end = Common::AlignUp(code_end_virt_addr, CodeRegionAlign);
+ constexpr size_t code_region_size = code_region_end - code_region_start;
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ code_region_start, code_region_size, KMemoryRegionType_KernelCode));
+
+ // Setup board-specific device physical regions.
+ Init::SetupDevicePhysicalMemoryRegions(memory_layout);
+
+ // Determine the amount of space needed for the misc region.
+ size_t misc_region_needed_size;
+ {
+ // Each core has a one page stack for all three stack types (Main, Idle, Exception).
+ misc_region_needed_size = Core::Hardware::NUM_CPU_CORES * (3 * (PageSize + PageSize));
+
+ // Account for each auto-map device.
+ for (const auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
+ if (region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
+ // Check that the region is valid.
+ ASSERT(region.GetEndAddress() != 0);
+
+ // Account for the region.
+ misc_region_needed_size +=
+ PageSize + (Common::AlignUp(region.GetLastAddress(), PageSize) -
+ Common::AlignDown(region.GetAddress(), PageSize));
+ }
+ }
+
+ // Multiply the needed size by three, to account for the need for guard space.
+ misc_region_needed_size *= 3;
+ }
+
+ // Decide on the actual size for the misc region.
+ constexpr size_t MiscRegionAlign = KernelAslrAlignment;
+ constexpr size_t MiscRegionMinimumSize = Size_32_MB;
+ const size_t misc_region_size = Common::AlignUp(
+ std::max(misc_region_needed_size, MiscRegionMinimumSize), MiscRegionAlign);
+ ASSERT(misc_region_size > 0);
+
+ // Setup the misc region.
+ const VAddr misc_region_start =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
+ misc_region_size, MiscRegionAlign, KMemoryRegionType_Kernel);
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ misc_region_start, misc_region_size, KMemoryRegionType_KernelMisc));
+
+ // Setup the stack region.
+ constexpr size_t StackRegionSize = Size_14_MB;
+ constexpr size_t StackRegionAlign = KernelAslrAlignment;
+ const VAddr stack_region_start =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
+ StackRegionSize, StackRegionAlign, KMemoryRegionType_Kernel);
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ stack_region_start, StackRegionSize, KMemoryRegionType_KernelStack));
+
+ // Determine the size of the resource region.
+ const size_t resource_region_size = memory_layout.GetResourceRegionSizeForInit();
+
+ // Determine the size of the slab region.
+ const size_t slab_region_size = Common::AlignUp(KernelSlabHeapSize, PageSize);
+ ASSERT(slab_region_size <= resource_region_size);
+
+ // Setup the slab region.
+ const PAddr code_start_phys_addr = KernelPhysicalAddressCodeBase;
+ const PAddr code_end_phys_addr = code_start_phys_addr + code_region_size;
+ const PAddr slab_start_phys_addr = code_end_phys_addr;
+ const PAddr slab_end_phys_addr = slab_start_phys_addr + slab_region_size;
+ constexpr size_t SlabRegionAlign = KernelAslrAlignment;
+ const size_t slab_region_needed_size =
+ Common::AlignUp(code_end_phys_addr + slab_region_size, SlabRegionAlign) -
+ Common::AlignDown(code_end_phys_addr, SlabRegionAlign);
+ const VAddr slab_region_start =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
+ slab_region_needed_size, SlabRegionAlign, KMemoryRegionType_Kernel) +
+ (code_end_phys_addr % SlabRegionAlign);
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ slab_region_start, slab_region_size, KMemoryRegionType_KernelSlab));
+
+ // Setup the temp region.
+ constexpr size_t TempRegionSize = Size_128_MB;
+ constexpr size_t TempRegionAlign = KernelAslrAlignment;
+ const VAddr temp_region_start =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegion(
+ TempRegionSize, TempRegionAlign, KMemoryRegionType_Kernel);
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(temp_region_start, TempRegionSize,
+ KMemoryRegionType_KernelTemp));
+
+ // Automatically map in devices that have auto-map attributes.
+ for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
+ // We only care about kernel regions.
+ if (!region.IsDerivedFrom(KMemoryRegionType_Kernel)) {
+ continue;
+ }
+
+ // Check whether we should map the region.
+ if (!region.HasTypeAttribute(KMemoryRegionAttr_ShouldKernelMap)) {
+ continue;
+ }
+
+ // If this region has already been mapped, no need to consider it.
+ if (region.HasTypeAttribute(KMemoryRegionAttr_DidKernelMap)) {
+ continue;
+ }
+
+ // Check that the region is valid.
+ ASSERT(region.GetEndAddress() != 0);
+
+ // Set the attribute to note we've mapped this region.
+ region.SetTypeAttribute(KMemoryRegionAttr_DidKernelMap);
+
+ // Create a virtual pair region and insert it into the tree.
+ const PAddr map_phys_addr = Common::AlignDown(region.GetAddress(), PageSize);
+ const size_t map_size =
+ Common::AlignUp(region.GetEndAddress(), PageSize) - map_phys_addr;
+ const VAddr map_virt_addr =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(
+ map_size, PageSize, KMemoryRegionType_KernelMisc, PageSize);
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ map_virt_addr, map_size, KMemoryRegionType_KernelMiscMappedDevice));
+ region.SetPairAddress(map_virt_addr + region.GetAddress() - map_phys_addr);
+ }
+
+ Init::SetupDramPhysicalMemoryRegions(memory_layout);
+
+ // Insert a physical region for the kernel code region.
+ ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
+ code_start_phys_addr, code_region_size, KMemoryRegionType_DramKernelCode));
+
+ // Insert a physical region for the kernel slab region.
+ ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
+ slab_start_phys_addr, slab_region_size, KMemoryRegionType_DramKernelSlab));
+
+ // Determine size available for kernel page table heaps, requiring > 8 MB.
+ const PAddr resource_end_phys_addr = slab_start_phys_addr + resource_region_size;
+ const size_t page_table_heap_size = resource_end_phys_addr - slab_end_phys_addr;
+ ASSERT(page_table_heap_size / Size_4_MB > 2);
+
+ // Insert a physical region for the kernel page table heap region
+ ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
+ slab_end_phys_addr, page_table_heap_size, KMemoryRegionType_DramKernelPtHeap));
+
+ // All DRAM regions that we haven't tagged by this point will be mapped under the linear
+ // mapping. Tag them.
+ for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
+ if (region.GetType() == KMemoryRegionType_Dram) {
+ // Check that the region is valid.
+ ASSERT(region.GetEndAddress() != 0);
+
+ // Set the linear map attribute.
+ region.SetTypeAttribute(KMemoryRegionAttr_LinearMapped);
+ }
+ }
+
+ // Get the linear region extents.
+ const auto linear_extents =
+ memory_layout.GetPhysicalMemoryRegionTree().GetDerivedRegionExtents(
+ KMemoryRegionAttr_LinearMapped);
+ ASSERT(linear_extents.GetEndAddress() != 0);
+
+ // Setup the linear mapping region.
+ constexpr size_t LinearRegionAlign = Size_1_GB;
+ const PAddr aligned_linear_phys_start =
+ Common::AlignDown(linear_extents.GetAddress(), LinearRegionAlign);
+ const size_t linear_region_size =
+ Common::AlignUp(linear_extents.GetEndAddress(), LinearRegionAlign) -
+ aligned_linear_phys_start;
+ const VAddr linear_region_start =
+ memory_layout.GetVirtualMemoryRegionTree().GetRandomAlignedRegionWithGuard(
+ linear_region_size, LinearRegionAlign, KMemoryRegionType_None, LinearRegionAlign);
+
+ const u64 linear_region_phys_to_virt_diff = linear_region_start - aligned_linear_phys_start;
+
+ // Map and create regions for all the linearly-mapped data.
+ {
+ PAddr cur_phys_addr = 0;
+ u64 cur_size = 0;
+ for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
+ if (!region.HasTypeAttribute(KMemoryRegionAttr_LinearMapped)) {
+ continue;
+ }
+
+ ASSERT(region.GetEndAddress() != 0);
+
+ if (cur_size == 0) {
+ cur_phys_addr = region.GetAddress();
+ cur_size = region.GetSize();
+ } else if (cur_phys_addr + cur_size == region.GetAddress()) {
+ cur_size += region.GetSize();
+ } else {
+ const VAddr cur_virt_addr = cur_phys_addr + linear_region_phys_to_virt_diff;
+ cur_phys_addr = region.GetAddress();
+ cur_size = region.GetSize();
+ }
+
+ const VAddr region_virt_addr =
+ region.GetAddress() + linear_region_phys_to_virt_diff;
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ region_virt_addr, region.GetSize(),
+ GetTypeForVirtualLinearMapping(region.GetType())));
+ region.SetPairAddress(region_virt_addr);
+
+ KMemoryRegion* virt_region =
+ memory_layout.GetVirtualMemoryRegionTree().FindModifiable(region_virt_addr);
+ ASSERT(virt_region != nullptr);
+ virt_region->SetPairAddress(region.GetAddress());
+ }
+ }
+
+ // Insert regions for the initial page table region.
+ ASSERT(memory_layout.GetPhysicalMemoryRegionTree().Insert(
+ resource_end_phys_addr, KernelPageTableHeapSize, KMemoryRegionType_DramKernelInitPt));
+ ASSERT(memory_layout.GetVirtualMemoryRegionTree().Insert(
+ resource_end_phys_addr + linear_region_phys_to_virt_diff, KernelPageTableHeapSize,
+ KMemoryRegionType_VirtualDramKernelInitPt));
+
+ // All linear-mapped DRAM regions that we haven't tagged by this point will be allocated to
+ // some pool partition. Tag them.
+ for (auto& region : memory_layout.GetPhysicalMemoryRegionTree()) {
+ if (region.GetType() == (KMemoryRegionType_Dram | KMemoryRegionAttr_LinearMapped)) {
+ region.SetType(KMemoryRegionType_DramPoolPartition);
+ }
+ }
+
+ // Setup all other memory regions needed to arrange the pool partitions.
+ Init::SetupPoolPartitionMemoryRegions(memory_layout);
+
+ // Cache all linear regions in their own trees for faster access, later.
+ memory_layout.InitializeLinearMemoryRegionTrees(aligned_linear_phys_start,
+ linear_region_start);
+
+ const auto system_pool = memory_layout.GetKernelSystemPoolRegionPhysicalExtents();
+ const auto applet_pool = memory_layout.GetKernelAppletPoolRegionPhysicalExtents();
+ const auto application_pool = memory_layout.GetKernelApplicationPoolRegionPhysicalExtents();
+
+ // Initialize memory managers
+ memory_manager = std::make_unique<KMemoryManager>();
+ memory_manager->InitializeManager(KMemoryManager::Pool::Application,
+ application_pool.GetAddress(),
+ application_pool.GetEndAddress());
+ memory_manager->InitializeManager(KMemoryManager::Pool::Applet, applet_pool.GetAddress(),
+ applet_pool.GetEndAddress());
+ memory_manager->InitializeManager(KMemoryManager::Pool::System, system_pool.GetAddress(),
+ system_pool.GetEndAddress());
+
+ // Setup memory regions for emulated processes
+ // TODO(bunnei): These should not be hardcoded regions initialized within the kernel
constexpr std::size_t hid_size{0x40000};
constexpr std::size_t font_size{0x1100000};
constexpr std::size_t irs_size{0x8000};
constexpr std::size_t time_size{0x1000};
- constexpr PAddr hid_addr{layout.System().GetAddress()};
- constexpr PAddr font_pa{layout.System().GetAddress() + hid_size};
- constexpr PAddr irs_addr{layout.System().GetAddress() + hid_size + font_size};
- constexpr PAddr time_addr{layout.System().GetAddress() + hid_size + font_size + irs_size};
- // Initialize memory manager
- memory_manager = std::make_unique<KMemoryManager>();
- memory_manager->InitializeManager(KMemoryManager::Pool::Application,
- layout.Application().GetAddress(),
- layout.Application().GetLastAddress());
- memory_manager->InitializeManager(KMemoryManager::Pool::Applet,
- layout.Applet().GetAddress(),
- layout.Applet().GetLastAddress());
- memory_manager->InitializeManager(KMemoryManager::Pool::System,
- layout.System().GetAddress(),
- layout.System().GetLastAddress());
+ const PAddr hid_phys_addr{system_pool.GetAddress()};
+ const PAddr font_phys_addr{system_pool.GetAddress() + hid_size};
+ const PAddr irs_phys_addr{system_pool.GetAddress() + hid_size + font_size};
+ const PAddr time_phys_addr{system_pool.GetAddress() + hid_size + font_size + irs_size};
hid_shared_mem = Kernel::KSharedMemory::Create(
- system.Kernel(), system.DeviceMemory(), nullptr, {hid_addr, hid_size / PageSize},
- KMemoryPermission::None, KMemoryPermission::Read, hid_addr, hid_size,
+ system.Kernel(), system.DeviceMemory(), nullptr, {hid_phys_addr, hid_size / PageSize},
+ KMemoryPermission::None, KMemoryPermission::Read, hid_phys_addr, hid_size,
"HID:SharedMemory");
font_shared_mem = Kernel::KSharedMemory::Create(
- system.Kernel(), system.DeviceMemory(), nullptr, {font_pa, font_size / PageSize},
- KMemoryPermission::None, KMemoryPermission::Read, font_pa, font_size,
+ system.Kernel(), system.DeviceMemory(), nullptr, {font_phys_addr, font_size / PageSize},
+ KMemoryPermission::None, KMemoryPermission::Read, font_phys_addr, font_size,
"Font:SharedMemory");
irs_shared_mem = Kernel::KSharedMemory::Create(
- system.Kernel(), system.DeviceMemory(), nullptr, {irs_addr, irs_size / PageSize},
- KMemoryPermission::None, KMemoryPermission::Read, irs_addr, irs_size,
+ system.Kernel(), system.DeviceMemory(), nullptr, {irs_phys_addr, irs_size / PageSize},
+ KMemoryPermission::None, KMemoryPermission::Read, irs_phys_addr, irs_size,
"IRS:SharedMemory");
time_shared_mem = Kernel::KSharedMemory::Create(
- system.Kernel(), system.DeviceMemory(), nullptr, {time_addr, time_size / PageSize},
- KMemoryPermission::None, KMemoryPermission::Read, time_addr, time_size,
+ system.Kernel(), system.DeviceMemory(), nullptr, {time_phys_addr, time_size / PageSize},
+ KMemoryPermission::None, KMemoryPermission::Read, time_phys_addr, time_size,
"Time:SharedMemory");
// Allocate slab heaps
--
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