diff options
Diffstat (limited to 'src/core/hle/kernel/init/init_slab_setup.cpp')
| -rw-r--r-- | src/core/hle/kernel/init/init_slab_setup.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/core/hle/kernel/init/init_slab_setup.cpp b/src/core/hle/kernel/init/init_slab_setup.cpp new file mode 100644 index 000000000..69ae405e6 --- /dev/null +++ b/src/core/hle/kernel/init/init_slab_setup.cpp @@ -0,0 +1,192 @@ +// Copyright 2021 yuzu emulator team +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#include "common/alignment.h" +#include "common/assert.h" +#include "common/common_funcs.h" +#include "common/common_types.h" +#include "core/core.h" +#include "core/hardware_properties.h" +#include "core/hle/kernel/init/init_slab_setup.h" +#include "core/hle/kernel/k_event.h" +#include "core/hle/kernel/k_memory_layout.h" +#include "core/hle/kernel/k_memory_manager.h" +#include "core/hle/kernel/k_port.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/kernel/k_resource_limit.h" +#include "core/hle/kernel/k_session.h" +#include "core/hle/kernel/k_shared_memory.h" +#include "core/hle/kernel/k_system_control.h" +#include "core/hle/kernel/k_thread.h" +#include "core/hle/kernel/k_transfer_memory.h" +#include "core/hle/kernel/memory_types.h" +#include "core/memory.h" + +namespace Kernel::Init { + +#define SLAB_COUNT(CLASS) kernel.SlabResourceCounts().num_##CLASS + +#define FOREACH_SLAB_TYPE(HANDLER, ...) \ + HANDLER(KProcess, (SLAB_COUNT(KProcess)), ##__VA_ARGS__) \ + HANDLER(KThread, (SLAB_COUNT(KThread)), ##__VA_ARGS__) \ + HANDLER(KEvent, (SLAB_COUNT(KEvent)), ##__VA_ARGS__) \ + HANDLER(KPort, (SLAB_COUNT(KPort)), ##__VA_ARGS__) \ + HANDLER(KSharedMemory, (SLAB_COUNT(KSharedMemory)), ##__VA_ARGS__) \ + HANDLER(KTransferMemory, (SLAB_COUNT(KTransferMemory)), ##__VA_ARGS__) \ + HANDLER(KSession, (SLAB_COUNT(KSession)), ##__VA_ARGS__) \ + HANDLER(KResourceLimit, (SLAB_COUNT(KResourceLimit)), ##__VA_ARGS__) + +namespace { + +#define DEFINE_SLAB_TYPE_ENUM_MEMBER(NAME, COUNT, ...) KSlabType_##NAME, + +enum KSlabType : u32 { + FOREACH_SLAB_TYPE(DEFINE_SLAB_TYPE_ENUM_MEMBER) KSlabType_Count, +}; + +#undef DEFINE_SLAB_TYPE_ENUM_MEMBER + +// Constexpr counts. +constexpr size_t SlabCountKProcess = 80; +constexpr size_t SlabCountKThread = 800; +constexpr size_t SlabCountKEvent = 700; +constexpr size_t SlabCountKInterruptEvent = 100; +constexpr size_t SlabCountKPort = 256 + 0x20; // Extra 0x20 ports over Nintendo for homebrew. +constexpr size_t SlabCountKSharedMemory = 80; +constexpr size_t SlabCountKTransferMemory = 200; +constexpr size_t SlabCountKCodeMemory = 10; +constexpr size_t SlabCountKDeviceAddressSpace = 300; +constexpr size_t SlabCountKSession = 933; +constexpr size_t SlabCountKLightSession = 100; +constexpr size_t SlabCountKObjectName = 7; +constexpr size_t SlabCountKResourceLimit = 5; +constexpr size_t SlabCountKDebug = Core::Hardware::NUM_CPU_CORES; +constexpr size_t SlabCountKAlpha = 1; +constexpr size_t SlabCountKBeta = 6; + +constexpr size_t SlabCountExtraKThread = 160; + +template <typename T> +VAddr InitializeSlabHeap(Core::System& system, KMemoryLayout& memory_layout, VAddr address, + size_t num_objects) { + const size_t size = Common::AlignUp(sizeof(T) * num_objects, alignof(void*)); + VAddr start = Common::AlignUp(address, alignof(T)); + + if (size > 0) { + const KMemoryRegion* region = memory_layout.FindVirtual(start + size - 1); + ASSERT(region != nullptr); + ASSERT(region->IsDerivedFrom(KMemoryRegionType_KernelSlab)); + T::InitializeSlabHeap(system.Kernel(), system.Memory().GetKernelBuffer(start, size), size); + } + + return start + size; +} + +} // namespace + +KSlabResourceCounts KSlabResourceCounts::CreateDefault() { + return { + .num_KProcess = SlabCountKProcess, + .num_KThread = SlabCountKThread, + .num_KEvent = SlabCountKEvent, + .num_KInterruptEvent = SlabCountKInterruptEvent, + .num_KPort = SlabCountKPort, + .num_KSharedMemory = SlabCountKSharedMemory, + .num_KTransferMemory = SlabCountKTransferMemory, + .num_KCodeMemory = SlabCountKCodeMemory, + .num_KDeviceAddressSpace = SlabCountKDeviceAddressSpace, + .num_KSession = SlabCountKSession, + .num_KLightSession = SlabCountKLightSession, + .num_KObjectName = SlabCountKObjectName, + .num_KResourceLimit = SlabCountKResourceLimit, + .num_KDebug = SlabCountKDebug, + .num_KAlpha = SlabCountKAlpha, + .num_KBeta = SlabCountKBeta, + }; +} + +void InitializeSlabResourceCounts(KernelCore& kernel) { + kernel.SlabResourceCounts() = KSlabResourceCounts::CreateDefault(); + if (KSystemControl::Init::ShouldIncreaseThreadResourceLimit()) { + kernel.SlabResourceCounts().num_KThread += SlabCountExtraKThread; + } +} + +size_t CalculateTotalSlabHeapSize(const KernelCore& kernel) { + size_t size = 0; + +#define ADD_SLAB_SIZE(NAME, COUNT, ...) \ + { \ + size += alignof(NAME); \ + size += Common::AlignUp(sizeof(NAME) * (COUNT), alignof(void*)); \ + }; + + // Add the size required for each slab. + FOREACH_SLAB_TYPE(ADD_SLAB_SIZE) + +#undef ADD_SLAB_SIZE + + // Add the reserved size. + size += KernelSlabHeapGapsSize; + + return size; +} + +void InitializeSlabHeaps(Core::System& system, KMemoryLayout& memory_layout) { + auto& kernel = system.Kernel(); + + // Get the start of the slab region, since that's where we'll be working. + VAddr address = memory_layout.GetSlabRegionAddress(); + + // Initialize slab type array to be in sorted order. + std::array<KSlabType, KSlabType_Count> slab_types; + for (size_t i = 0; i < slab_types.size(); i++) { + slab_types[i] = static_cast<KSlabType>(i); + } + + // N shuffles the slab type array with the following simple algorithm. + for (size_t i = 0; i < slab_types.size(); i++) { + const size_t rnd = KSystemControl::GenerateRandomRange(0, slab_types.size() - 1); + std::swap(slab_types[i], slab_types[rnd]); + } + + // Create an array to represent the gaps between the slabs. + const size_t total_gap_size = KernelSlabHeapGapsSize; + std::array<size_t, slab_types.size()> slab_gaps; + for (size_t i = 0; i < slab_gaps.size(); i++) { + // Note: This is an off-by-one error from Nintendo's intention, because GenerateRandomRange + // is inclusive. However, Nintendo also has the off-by-one error, and it's "harmless", so we + // will include it ourselves. + slab_gaps[i] = KSystemControl::GenerateRandomRange(0, total_gap_size); + } + + // Sort the array, so that we can treat differences between values as offsets to the starts of + // slabs. + for (size_t i = 1; i < slab_gaps.size(); i++) { + for (size_t j = i; j > 0 && slab_gaps[j - 1] > slab_gaps[j]; j--) { + std::swap(slab_gaps[j], slab_gaps[j - 1]); + } + } + + for (size_t i = 0; i < slab_types.size(); i++) { + // Add the random gap to the address. + address += (i == 0) ? slab_gaps[0] : slab_gaps[i] - slab_gaps[i - 1]; + +#define INITIALIZE_SLAB_HEAP(NAME, COUNT, ...) \ + case KSlabType_##NAME: \ + address = InitializeSlabHeap<NAME>(system, memory_layout, address, COUNT); \ + break; + + // Initialize the slabheap. + switch (slab_types[i]) { + // For each of the slab types, we want to initialize that heap. + FOREACH_SLAB_TYPE(INITIALIZE_SLAB_HEAP) + // If we somehow get an invalid type, abort. + default: + UNREACHABLE(); + } + } +} + +} // namespace Kernel::Init |