mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-30 07:42:13 +00:00
267 lines
12 KiB
C++
267 lines
12 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#pragma once
|
|
#include <mesosphere/kern_common.hpp>
|
|
#include <mesosphere/kern_k_thread.hpp>
|
|
#include <mesosphere/kern_select_page_table.hpp>
|
|
#include <mesosphere/kern_svc.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
class KCapabilities {
|
|
private:
|
|
static constexpr size_t InterruptIdCount = 0x400;
|
|
|
|
struct InterruptFlagSetTag{};
|
|
using InterruptFlagSet = util::BitFlagSet<InterruptIdCount, InterruptFlagSetTag>;
|
|
|
|
enum class CapabilityType : u32 {
|
|
CorePriority = (1u << 3) - 1,
|
|
SyscallMask = (1u << 4) - 1,
|
|
MapRange = (1u << 6) - 1,
|
|
MapIoPage = (1u << 7) - 1,
|
|
MapRegion = (1u << 10) - 1,
|
|
InterruptPair = (1u << 11) - 1,
|
|
ProgramType = (1u << 13) - 1,
|
|
KernelVersion = (1u << 14) - 1,
|
|
HandleTable = (1u << 15) - 1,
|
|
DebugFlags = (1u << 16) - 1,
|
|
|
|
Invalid = 0u,
|
|
Padding = ~0u,
|
|
};
|
|
|
|
using RawCapabilityValue = util::BitPack32::Field<0, BITSIZEOF(util::BitPack32), u32>;
|
|
|
|
static constexpr CapabilityType GetCapabilityType(const util::BitPack32 cap) {
|
|
const u32 value = cap.Get<RawCapabilityValue>();
|
|
return static_cast<CapabilityType>((~value & (value + 1)) - 1);
|
|
}
|
|
|
|
static constexpr u32 GetCapabilityFlag(CapabilityType type) {
|
|
return static_cast<u32>(type) + 1;
|
|
}
|
|
|
|
template<size_t Index, size_t Count, typename T = u32>
|
|
using Field = util::BitPack32::Field<Index, Count, T>;
|
|
|
|
#define DEFINE_FIELD(name, prev, ...) using name = Field<prev::Next, __VA_ARGS__>
|
|
|
|
template<CapabilityType Type>
|
|
static constexpr inline u32 CapabilityFlag = static_cast<u32>(Type) + 1;
|
|
|
|
template<CapabilityType Type>
|
|
static constexpr inline u32 CapabilityId = util::CountTrailingZeros<u32>(CapabilityFlag<Type>);
|
|
|
|
struct CorePriority {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::CorePriority> + 1>;
|
|
|
|
DEFINE_FIELD(LowestThreadPriority, IdBits, 6);
|
|
DEFINE_FIELD(HighestThreadPriority, LowestThreadPriority, 6);
|
|
DEFINE_FIELD(MinimumCoreId, HighestThreadPriority, 8);
|
|
DEFINE_FIELD(MaximumCoreId, MinimumCoreId, 8);
|
|
};
|
|
|
|
struct SyscallMask {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::SyscallMask> + 1>;
|
|
|
|
DEFINE_FIELD(Mask, IdBits, 24);
|
|
DEFINE_FIELD(Index, Mask, 3);
|
|
};
|
|
|
|
#if defined(MESOSPHERE_ENABLE_LARGE_PHYSICAL_ADDRESS_CAPABILITIES)
|
|
static constexpr u64 PhysicalMapAllowedMask = (1ul << 40) - 1;
|
|
#else
|
|
static constexpr u64 PhysicalMapAllowedMask = (1ul << 36) - 1;
|
|
#endif
|
|
|
|
struct MapRange {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::MapRange> + 1>;
|
|
|
|
DEFINE_FIELD(Address, IdBits, 24);
|
|
DEFINE_FIELD(ReadOnly, Address, 1, bool);
|
|
};
|
|
|
|
struct MapRangeSize {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::MapRange> + 1>;
|
|
|
|
DEFINE_FIELD(Pages, IdBits, 20);
|
|
|
|
#if defined(MESOSPHERE_ENABLE_LARGE_PHYSICAL_ADDRESS_CAPABILITIES)
|
|
DEFINE_FIELD(AddressHigh, Pages, 4);
|
|
DEFINE_FIELD(Normal, AddressHigh, 1, bool);
|
|
#else
|
|
DEFINE_FIELD(Reserved, Pages, 4);
|
|
DEFINE_FIELD(Normal, Reserved, 1, bool);
|
|
#endif
|
|
};
|
|
|
|
struct MapIoPage {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::MapIoPage> + 1>;
|
|
|
|
DEFINE_FIELD(Address, IdBits, 24);
|
|
};
|
|
|
|
enum class RegionType : u32 {
|
|
NoMapping = 0,
|
|
KernelTraceBuffer = 1,
|
|
OnMemoryBootImage = 2,
|
|
DTB = 3,
|
|
};
|
|
|
|
struct MapRegion {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::MapRegion> + 1>;
|
|
|
|
DEFINE_FIELD(Region0, IdBits, 6, RegionType);
|
|
DEFINE_FIELD(ReadOnly0, Region0, 1, bool);
|
|
DEFINE_FIELD(Region1, ReadOnly0, 6, RegionType);
|
|
DEFINE_FIELD(ReadOnly1, Region1, 1, bool);
|
|
DEFINE_FIELD(Region2, ReadOnly1, 6, RegionType);
|
|
DEFINE_FIELD(ReadOnly2, Region2, 1, bool);
|
|
};
|
|
|
|
static const u32 PaddingInterruptId = 0x3FF;
|
|
static_assert(PaddingInterruptId < InterruptIdCount);
|
|
|
|
struct InterruptPair {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::InterruptPair> + 1>;
|
|
|
|
DEFINE_FIELD(InterruptId0, IdBits, 10);
|
|
DEFINE_FIELD(InterruptId1, InterruptId0, 10);
|
|
};
|
|
|
|
|
|
struct ProgramType {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::ProgramType> + 1>;
|
|
|
|
DEFINE_FIELD(Type, IdBits, 3);
|
|
DEFINE_FIELD(Reserved, Type, 15);
|
|
};
|
|
|
|
struct KernelVersion {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::KernelVersion> + 1>;
|
|
|
|
DEFINE_FIELD(MinorVersion, IdBits, 4);
|
|
DEFINE_FIELD(MajorVersion, MinorVersion, 13);
|
|
};
|
|
|
|
struct HandleTable {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::HandleTable> + 1>;
|
|
|
|
DEFINE_FIELD(Size, IdBits, 10);
|
|
DEFINE_FIELD(Reserved, Size, 6);
|
|
};
|
|
|
|
struct DebugFlags {
|
|
using IdBits = Field<0, CapabilityId<CapabilityType::DebugFlags> + 1>;
|
|
|
|
DEFINE_FIELD(AllowDebug, IdBits, 1, bool);
|
|
DEFINE_FIELD(ForceDebug, AllowDebug, 1, bool);
|
|
DEFINE_FIELD(Reserved, ForceDebug, 13);
|
|
};
|
|
|
|
#undef DEFINE_FIELD
|
|
|
|
static constexpr u32 InitializeOnceFlags = CapabilityFlag<CapabilityType::CorePriority> |
|
|
CapabilityFlag<CapabilityType::ProgramType> |
|
|
CapabilityFlag<CapabilityType::KernelVersion> |
|
|
CapabilityFlag<CapabilityType::HandleTable> |
|
|
CapabilityFlag<CapabilityType::DebugFlags>;
|
|
private:
|
|
svc::SvcAccessFlagSet m_svc_access_flags;
|
|
InterruptFlagSet m_irq_access_flags;
|
|
u64 m_core_mask;
|
|
u64 m_phys_core_mask;
|
|
u64 m_priority_mask;
|
|
util::BitPack32 m_debug_capabilities;
|
|
s32 m_handle_table_size;
|
|
util::BitPack32 m_intended_kernel_version;
|
|
u32 m_program_type;
|
|
private:
|
|
constexpr bool SetSvcAllowed(u32 id) {
|
|
if (AMS_LIKELY(id < m_svc_access_flags.GetCount())) {
|
|
m_svc_access_flags[id] = true;
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
constexpr bool SetInterruptPermitted(u32 id) {
|
|
if (AMS_LIKELY(id < m_irq_access_flags.GetCount())) {
|
|
m_irq_access_flags[id] = true;
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
Result SetCorePriorityCapability(const util::BitPack32 cap);
|
|
Result SetSyscallMaskCapability(const util::BitPack32 cap, u32 &set_svc);
|
|
Result MapRange(const util::BitPack32 cap, const util::BitPack32 size_cap, KProcessPageTable *page_table);
|
|
Result MapIoPage(const util::BitPack32 cap, KProcessPageTable *page_table);
|
|
Result MapRegion(const util::BitPack32 cap, KProcessPageTable *page_table);
|
|
Result SetInterruptPairCapability(const util::BitPack32 cap);
|
|
Result SetProgramTypeCapability(const util::BitPack32 cap);
|
|
Result SetKernelVersionCapability(const util::BitPack32 cap);
|
|
Result SetHandleTableCapability(const util::BitPack32 cap);
|
|
Result SetDebugFlagsCapability(const util::BitPack32 cap);
|
|
|
|
template<typename F>
|
|
static Result ProcessMapRegionCapability(const util::BitPack32 cap, F f);
|
|
static Result CheckMapRegion(const util::BitPack32 cap);
|
|
|
|
Result SetCapability(const util::BitPack32 cap, u32 &set_flags, u32 &set_svc, KProcessPageTable *page_table);
|
|
Result SetCapabilities(const u32 *caps, s32 num_caps, KProcessPageTable *page_table);
|
|
Result SetCapabilities(svc::KUserPointer<const u32 *> user_caps, s32 num_caps, KProcessPageTable *page_table);
|
|
public:
|
|
constexpr explicit KCapabilities(util::ConstantInitializeTag) : m_svc_access_flags{}, m_irq_access_flags{}, m_core_mask{}, m_phys_core_mask{}, m_priority_mask{}, m_debug_capabilities{0}, m_handle_table_size{}, m_intended_kernel_version{}, m_program_type{} { /* ... */ }
|
|
KCapabilities() { /* ... */ }
|
|
|
|
Result Initialize(const u32 *caps, s32 num_caps, KProcessPageTable *page_table);
|
|
Result Initialize(svc::KUserPointer<const u32 *> user_caps, s32 num_caps, KProcessPageTable *page_table);
|
|
|
|
static Result CheckCapabilities(svc::KUserPointer<const u32 *> user_caps, s32 num_caps);
|
|
|
|
constexpr u64 GetCoreMask() const { return m_core_mask; }
|
|
constexpr u64 GetPhysicalCoreMask() const { return m_phys_core_mask; }
|
|
constexpr u64 GetPriorityMask() const { return m_priority_mask; }
|
|
constexpr s32 GetHandleTableSize() const { return m_handle_table_size; }
|
|
|
|
constexpr const svc::SvcAccessFlagSet &GetSvcPermissions() const { return m_svc_access_flags; }
|
|
|
|
constexpr bool IsPermittedSvc(svc::SvcId id) const {
|
|
return (id < m_svc_access_flags.GetCount()) && m_svc_access_flags[id];
|
|
}
|
|
|
|
constexpr bool IsPermittedInterrupt(u32 id) const {
|
|
return (id < m_irq_access_flags.GetCount()) && m_irq_access_flags[id];
|
|
}
|
|
|
|
constexpr bool IsPermittedDebug() const {
|
|
return m_debug_capabilities.Get<DebugFlags::AllowDebug>();
|
|
}
|
|
|
|
constexpr bool CanForceDebug() const {
|
|
return m_debug_capabilities.Get<DebugFlags::ForceDebug>();
|
|
}
|
|
|
|
constexpr u32 GetIntendedKernelMajorVersion() const { return m_intended_kernel_version.Get<KernelVersion::MajorVersion>(); }
|
|
constexpr u32 GetIntendedKernelMinorVersion() const { return m_intended_kernel_version.Get<KernelVersion::MinorVersion>(); }
|
|
constexpr u32 GetIntendedKernelVersion() const { return ams::svc::EncodeKernelVersion(this->GetIntendedKernelMajorVersion(), this->GetIntendedKernelMinorVersion()); }
|
|
};
|
|
|
|
}
|