mirror of https://github.com/yuzu-emu/yuzu.git
297 lines
9.1 KiB
C++
297 lines
9.1 KiB
C++
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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <bitset>
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#include <span>
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#include "common/bit_field.h"
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#include "common/common_types.h"
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#include "core/hle/kernel/svc_types.h"
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#include "core/hle/result.h"
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namespace Kernel {
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class KProcessPageTable;
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class KernelCore;
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class KCapabilities {
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public:
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constexpr explicit KCapabilities() = default;
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Result InitializeForKip(std::span<const u32> kern_caps, KProcessPageTable* page_table);
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Result InitializeForUser(std::span<const u32> user_caps, KProcessPageTable* page_table);
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static Result CheckCapabilities(KernelCore& kernel, std::span<const u32> user_caps);
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constexpr u64 GetCoreMask() const {
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return m_core_mask;
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}
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constexpr u64 GetPhysicalCoreMask() const {
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return m_phys_core_mask;
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}
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constexpr u64 GetPriorityMask() const {
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return m_priority_mask;
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}
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constexpr s32 GetHandleTableSize() const {
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return m_handle_table_size;
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}
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constexpr const Svc::SvcAccessFlagSet& GetSvcPermissions() const {
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return m_svc_access_flags;
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}
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constexpr bool IsPermittedSvc(u32 id) const {
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return (id < m_svc_access_flags.size()) && m_svc_access_flags[id];
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}
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constexpr bool IsPermittedInterrupt(u32 id) const {
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return (id < m_irq_access_flags.size()) && m_irq_access_flags[id];
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}
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constexpr bool IsPermittedDebug() const {
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return DebugFlags{m_debug_capabilities}.allow_debug.Value() != 0;
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}
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constexpr bool CanForceDebug() const {
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return DebugFlags{m_debug_capabilities}.force_debug.Value() != 0;
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}
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constexpr u32 GetIntendedKernelMajorVersion() const {
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return KernelVersion{m_intended_kernel_version}.major_version;
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}
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constexpr u32 GetIntendedKernelMinorVersion() const {
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return KernelVersion{m_intended_kernel_version}.minor_version;
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}
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private:
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static constexpr size_t InterruptIdCount = 0x400;
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using InterruptFlagSet = std::bitset<InterruptIdCount>;
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enum class CapabilityType : u32 {
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CorePriority = (1U << 3) - 1,
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SyscallMask = (1U << 4) - 1,
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MapRange = (1U << 6) - 1,
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MapIoPage = (1U << 7) - 1,
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MapRegion = (1U << 10) - 1,
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InterruptPair = (1U << 11) - 1,
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ProgramType = (1U << 13) - 1,
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KernelVersion = (1U << 14) - 1,
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HandleTable = (1U << 15) - 1,
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DebugFlags = (1U << 16) - 1,
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Invalid = 0U,
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Padding = ~0U,
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};
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using RawCapabilityValue = u32;
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static constexpr CapabilityType GetCapabilityType(const RawCapabilityValue value) {
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return static_cast<CapabilityType>((~value & (value + 1)) - 1);
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}
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static constexpr u32 GetCapabilityFlag(CapabilityType type) {
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return static_cast<u32>(type) + 1;
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}
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template <CapabilityType Type>
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static constexpr inline u32 CapabilityFlag = static_cast<u32>(Type) + 1;
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template <CapabilityType Type>
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static constexpr inline u32 CapabilityId = std::countr_zero(CapabilityFlag<Type>);
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union CorePriority {
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static_assert(CapabilityId<CapabilityType::CorePriority> + 1 == 4);
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RawCapabilityValue raw;
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BitField<0, 4, CapabilityType> id;
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BitField<4, 6, u32> lowest_thread_priority;
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BitField<10, 6, u32> highest_thread_priority;
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BitField<16, 8, u32> minimum_core_id;
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BitField<24, 8, u32> maximum_core_id;
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};
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union SyscallMask {
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static_assert(CapabilityId<CapabilityType::SyscallMask> + 1 == 5);
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RawCapabilityValue raw;
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BitField<0, 5, CapabilityType> id;
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BitField<5, 24, u32> mask;
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BitField<29, 3, u32> index;
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};
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// #undef MESOSPHERE_ENABLE_LARGE_PHYSICAL_ADDRESS_CAPABILITIES
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static constexpr u64 PhysicalMapAllowedMask = (1ULL << 36) - 1;
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union MapRange {
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static_assert(CapabilityId<CapabilityType::MapRange> + 1 == 7);
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RawCapabilityValue raw;
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BitField<0, 7, CapabilityType> id;
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BitField<7, 24, u32> address;
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BitField<31, 1, u32> read_only;
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};
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union MapRangeSize {
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static_assert(CapabilityId<CapabilityType::MapRange> + 1 == 7);
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RawCapabilityValue raw;
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BitField<0, 7, CapabilityType> id;
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BitField<7, 20, u32> pages;
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BitField<27, 4, u32> reserved;
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BitField<31, 1, u32> normal;
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};
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union MapIoPage {
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static_assert(CapabilityId<CapabilityType::MapIoPage> + 1 == 8);
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RawCapabilityValue raw;
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BitField<0, 8, CapabilityType> id;
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BitField<8, 24, u32> address;
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};
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enum class RegionType : u32 {
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NoMapping = 0,
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KernelTraceBuffer = 1,
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OnMemoryBootImage = 2,
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DTB = 3,
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};
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union MapRegion {
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static_assert(CapabilityId<CapabilityType::MapRegion> + 1 == 11);
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RawCapabilityValue raw;
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BitField<0, 11, CapabilityType> id;
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BitField<11, 6, RegionType> region0;
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BitField<17, 1, u32> read_only0;
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BitField<18, 6, RegionType> region1;
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BitField<24, 1, u32> read_only1;
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BitField<25, 6, RegionType> region2;
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BitField<31, 1, u32> read_only2;
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};
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union InterruptPair {
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static_assert(CapabilityId<CapabilityType::InterruptPair> + 1 == 12);
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RawCapabilityValue raw;
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BitField<0, 12, CapabilityType> id;
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BitField<12, 10, u32> interrupt_id0;
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BitField<22, 10, u32> interrupt_id1;
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};
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union ProgramType {
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static_assert(CapabilityId<CapabilityType::ProgramType> + 1 == 14);
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RawCapabilityValue raw;
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BitField<0, 14, CapabilityType> id;
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BitField<14, 3, u32> type;
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BitField<17, 15, u32> reserved;
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};
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union KernelVersion {
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static_assert(CapabilityId<CapabilityType::KernelVersion> + 1 == 15);
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RawCapabilityValue raw;
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BitField<0, 15, CapabilityType> id;
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BitField<15, 4, u32> minor_version;
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BitField<19, 13, u32> major_version;
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};
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union HandleTable {
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static_assert(CapabilityId<CapabilityType::HandleTable> + 1 == 16);
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RawCapabilityValue raw;
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BitField<0, 16, CapabilityType> id;
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BitField<16, 10, u32> size;
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BitField<26, 6, u32> reserved;
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};
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union DebugFlags {
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static_assert(CapabilityId<CapabilityType::DebugFlags> + 1 == 17);
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RawCapabilityValue raw;
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BitField<0, 17, CapabilityType> id;
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BitField<17, 1, u32> allow_debug;
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BitField<18, 1, u32> force_debug;
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BitField<19, 13, u32> reserved;
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};
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static_assert(sizeof(CorePriority) == 4);
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static_assert(sizeof(SyscallMask) == 4);
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static_assert(sizeof(MapRange) == 4);
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static_assert(sizeof(MapRangeSize) == 4);
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static_assert(sizeof(MapIoPage) == 4);
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static_assert(sizeof(MapRegion) == 4);
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static_assert(sizeof(InterruptPair) == 4);
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static_assert(sizeof(ProgramType) == 4);
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static_assert(sizeof(KernelVersion) == 4);
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static_assert(sizeof(HandleTable) == 4);
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static_assert(sizeof(DebugFlags) == 4);
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static constexpr u32 InitializeOnceFlags =
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CapabilityFlag<CapabilityType::CorePriority> | CapabilityFlag<CapabilityType::ProgramType> |
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CapabilityFlag<CapabilityType::KernelVersion> |
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CapabilityFlag<CapabilityType::HandleTable> | CapabilityFlag<CapabilityType::DebugFlags>;
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static const u32 PaddingInterruptId = 0x3FF;
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static_assert(PaddingInterruptId < InterruptIdCount);
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private:
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constexpr bool SetSvcAllowed(u32 id) {
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if (id < m_svc_access_flags.size()) [[likely]] {
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m_svc_access_flags[id] = true;
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return true;
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} else {
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return false;
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}
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}
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constexpr bool SetInterruptPermitted(u32 id) {
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if (id < m_irq_access_flags.size()) [[likely]] {
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m_irq_access_flags[id] = true;
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return true;
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} else {
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return false;
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}
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}
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Result SetCorePriorityCapability(const u32 cap);
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Result SetSyscallMaskCapability(const u32 cap, u32& set_svc);
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Result MapRange_(const u32 cap, const u32 size_cap, KProcessPageTable* page_table);
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Result MapIoPage_(const u32 cap, KProcessPageTable* page_table);
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Result MapRegion_(const u32 cap, KProcessPageTable* page_table);
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Result SetInterruptPairCapability(const u32 cap);
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Result SetProgramTypeCapability(const u32 cap);
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Result SetKernelVersionCapability(const u32 cap);
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Result SetHandleTableCapability(const u32 cap);
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Result SetDebugFlagsCapability(const u32 cap);
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template <typename F>
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static Result ProcessMapRegionCapability(const u32 cap, F f);
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static Result CheckMapRegion(KernelCore& kernel, const u32 cap);
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Result SetCapability(const u32 cap, u32& set_flags, u32& set_svc,
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KProcessPageTable* page_table);
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Result SetCapabilities(std::span<const u32> caps, KProcessPageTable* page_table);
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private:
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Svc::SvcAccessFlagSet m_svc_access_flags{};
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InterruptFlagSet m_irq_access_flags{};
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u64 m_core_mask{};
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u64 m_phys_core_mask{};
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u64 m_priority_mask{};
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u32 m_debug_capabilities{};
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s32 m_handle_table_size{};
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u32 m_intended_kernel_version{};
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u32 m_program_type{};
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};
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} // namespace Kernel
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