diff options
Diffstat (limited to 'src/core/hle/kernel')
-rw-r--r-- | src/core/hle/kernel/k_memory_block.h | 506 |
1 files changed, 389 insertions, 117 deletions
diff --git a/src/core/hle/kernel/k_memory_block.h b/src/core/hle/kernel/k_memory_block.h index 18df1f836..9444f6bd2 100644 --- a/src/core/hle/kernel/k_memory_block.h +++ b/src/core/hle/kernel/k_memory_block.h @@ -6,6 +6,7 @@ #include "common/alignment.h" #include "common/assert.h" #include "common/common_types.h" +#include "common/intrusive_red_black_tree.h" #include "core/hle/kernel/memory_types.h" #include "core/hle/kernel/svc_types.h" @@ -168,9 +169,8 @@ constexpr KMemoryPermission ConvertToKMemoryPermission(Svc::MemoryPermission per enum class KMemoryAttribute : u8 { None = 0x00, - Mask = 0x7F, - All = Mask, - DontCareMask = 0x80, + All = 0xFF, + UserMask = All, Locked = static_cast<u8>(Svc::MemoryAttribute::Locked), IpcLocked = static_cast<u8>(Svc::MemoryAttribute::IpcLocked), @@ -178,76 +178,112 @@ enum class KMemoryAttribute : u8 { Uncached = static_cast<u8>(Svc::MemoryAttribute::Uncached), SetMask = Uncached, - - IpcAndDeviceMapped = IpcLocked | DeviceShared, - LockedAndIpcLocked = Locked | IpcLocked, - DeviceSharedAndUncached = DeviceShared | Uncached }; DECLARE_ENUM_FLAG_OPERATORS(KMemoryAttribute); -static_assert((static_cast<u8>(KMemoryAttribute::Mask) & - static_cast<u8>(KMemoryAttribute::DontCareMask)) == 0); +enum class KMemoryBlockDisableMergeAttribute : u8 { + None = 0, + Normal = (1u << 0), + DeviceLeft = (1u << 1), + IpcLeft = (1u << 2), + Locked = (1u << 3), + DeviceRight = (1u << 4), + + AllLeft = Normal | DeviceLeft | IpcLeft | Locked, + AllRight = DeviceRight, +}; +DECLARE_ENUM_FLAG_OPERATORS(KMemoryBlockDisableMergeAttribute); struct KMemoryInfo { - VAddr addr{}; - std::size_t size{}; - KMemoryState state{}; - KMemoryPermission perm{}; - KMemoryAttribute attribute{}; - KMemoryPermission original_perm{}; - u16 ipc_lock_count{}; - u16 device_use_count{}; + uintptr_t m_address; + size_t m_size; + KMemoryState m_state; + u16 m_device_disable_merge_left_count; + u16 m_device_disable_merge_right_count; + u16 m_ipc_lock_count; + u16 m_device_use_count; + u16 m_ipc_disable_merge_count; + KMemoryPermission m_permission; + KMemoryAttribute m_attribute; + KMemoryPermission m_original_permission; + KMemoryBlockDisableMergeAttribute m_disable_merge_attribute; constexpr Svc::MemoryInfo GetSvcMemoryInfo() const { return { - addr, - size, - static_cast<Svc::MemoryState>(state & KMemoryState::Mask), - static_cast<Svc::MemoryAttribute>(attribute & KMemoryAttribute::Mask), - static_cast<Svc::MemoryPermission>(perm & KMemoryPermission::UserMask), - ipc_lock_count, - device_use_count, + .addr = m_address, + .size = m_size, + .state = static_cast<Svc::MemoryState>(m_state & KMemoryState::Mask), + .attr = static_cast<Svc::MemoryAttribute>(m_attribute & KMemoryAttribute::UserMask), + .perm = static_cast<Svc::MemoryPermission>(m_permission & KMemoryPermission::UserMask), + .ipc_refcount = m_ipc_lock_count, + .device_refcount = m_device_use_count, + .padding = {}, }; } - constexpr VAddr GetAddress() const { - return addr; + constexpr uintptr_t GetAddress() const { + return m_address; + } + + constexpr size_t GetSize() const { + return m_size; } - constexpr std::size_t GetSize() const { - return size; + + constexpr size_t GetNumPages() const { + return this->GetSize() / PageSize; } - constexpr std::size_t GetNumPages() const { - return GetSize() / PageSize; + + constexpr uintptr_t GetEndAddress() const { + return this->GetAddress() + this->GetSize(); } - constexpr VAddr GetEndAddress() const { - return GetAddress() + GetSize(); + + constexpr uintptr_t GetLastAddress() const { + return this->GetEndAddress() - 1; } - constexpr VAddr GetLastAddress() const { - return GetEndAddress() - 1; + + constexpr u16 GetIpcLockCount() const { + return m_ipc_lock_count; } + + constexpr u16 GetIpcDisableMergeCount() const { + return m_ipc_disable_merge_count; + } + constexpr KMemoryState GetState() const { - return state; + return m_state; + } + + constexpr KMemoryPermission GetPermission() const { + return m_permission; } + + constexpr KMemoryPermission GetOriginalPermission() const { + return m_original_permission; + } + constexpr KMemoryAttribute GetAttribute() const { - return attribute; + return m_attribute; } - constexpr KMemoryPermission GetPermission() const { - return perm; + + constexpr KMemoryBlockDisableMergeAttribute GetDisableMergeAttribute() const { + return m_disable_merge_attribute; } }; -class KMemoryBlock final { - friend class KMemoryBlockManager; - +class KMemoryBlock : public Common::IntrusiveRedBlackTreeBaseNode<KMemoryBlock> { private: - VAddr addr{}; - std::size_t num_pages{}; - KMemoryState state{KMemoryState::None}; - u16 ipc_lock_count{}; - u16 device_use_count{}; - KMemoryPermission perm{KMemoryPermission::None}; - KMemoryPermission original_perm{KMemoryPermission::None}; - KMemoryAttribute attribute{KMemoryAttribute::None}; + u16 m_device_disable_merge_left_count; + u16 m_device_disable_merge_right_count; + VAddr m_address; + size_t m_num_pages; + KMemoryState m_memory_state; + u16 m_ipc_lock_count; + u16 m_device_use_count; + u16 m_ipc_disable_merge_count; + KMemoryPermission m_permission; + KMemoryPermission m_original_permission; + KMemoryAttribute m_attribute; + KMemoryBlockDisableMergeAttribute m_disable_merge_attribute; public: static constexpr int Compare(const KMemoryBlock& lhs, const KMemoryBlock& rhs) { @@ -261,113 +297,349 @@ public: } public: - constexpr KMemoryBlock() = default; - constexpr KMemoryBlock(VAddr addr_, std::size_t num_pages_, KMemoryState state_, - KMemoryPermission perm_, KMemoryAttribute attribute_) - : addr{addr_}, num_pages(num_pages_), state{state_}, perm{perm_}, attribute{attribute_} {} - constexpr VAddr GetAddress() const { - return addr; + return m_address; } - constexpr std::size_t GetNumPages() const { - return num_pages; + constexpr size_t GetNumPages() const { + return m_num_pages; } - constexpr std::size_t GetSize() const { - return GetNumPages() * PageSize; + constexpr size_t GetSize() const { + return this->GetNumPages() * PageSize; } constexpr VAddr GetEndAddress() const { - return GetAddress() + GetSize(); + return this->GetAddress() + this->GetSize(); } constexpr VAddr GetLastAddress() const { - return GetEndAddress() - 1; + return this->GetEndAddress() - 1; + } + + constexpr u16 GetIpcLockCount() const { + return m_ipc_lock_count; + } + + constexpr u16 GetIpcDisableMergeCount() const { + return m_ipc_disable_merge_count; + } + + constexpr KMemoryPermission GetPermission() const { + return m_permission; + } + + constexpr KMemoryPermission GetOriginalPermission() const { + return m_original_permission; + } + + constexpr KMemoryAttribute GetAttribute() const { + return m_attribute; } constexpr KMemoryInfo GetMemoryInfo() const { return { - GetAddress(), GetSize(), state, perm, - attribute, original_perm, ipc_lock_count, device_use_count, + .m_address = this->GetAddress(), + .m_size = this->GetSize(), + .m_state = m_memory_state, + .m_device_disable_merge_left_count = m_device_disable_merge_left_count, + .m_device_disable_merge_right_count = m_device_disable_merge_right_count, + .m_ipc_lock_count = m_ipc_lock_count, + .m_device_use_count = m_device_use_count, + .m_ipc_disable_merge_count = m_ipc_disable_merge_count, + .m_permission = m_permission, + .m_attribute = m_attribute, + .m_original_permission = m_original_permission, + .m_disable_merge_attribute = m_disable_merge_attribute, }; } - void ShareToDevice(KMemoryPermission /*new_perm*/) { - ASSERT((attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared || - device_use_count == 0); - attribute |= KMemoryAttribute::DeviceShared; - const u16 new_use_count{++device_use_count}; - ASSERT(new_use_count > 0); +public: + explicit KMemoryBlock() = default; + + constexpr KMemoryBlock(VAddr addr, size_t np, KMemoryState ms, KMemoryPermission p, + KMemoryAttribute attr) + : Common::IntrusiveRedBlackTreeBaseNode<KMemoryBlock>(), + m_device_disable_merge_left_count(), m_device_disable_merge_right_count(), + m_address(addr), m_num_pages(np), m_memory_state(ms), m_ipc_lock_count(0), + m_device_use_count(0), m_ipc_disable_merge_count(), m_permission(p), + m_original_permission(KMemoryPermission::None), m_attribute(attr), + m_disable_merge_attribute() {} + + constexpr void Initialize(VAddr addr, size_t np, KMemoryState ms, KMemoryPermission p, + KMemoryAttribute attr) { + m_device_disable_merge_left_count = 0; + m_device_disable_merge_right_count = 0; + m_address = addr; + m_num_pages = np; + m_memory_state = ms; + m_ipc_lock_count = 0; + m_device_use_count = 0; + m_permission = p; + m_original_permission = KMemoryPermission::None; + m_attribute = attr; + m_disable_merge_attribute = KMemoryBlockDisableMergeAttribute::None; + } + + constexpr bool HasProperties(KMemoryState s, KMemoryPermission p, KMemoryAttribute a) const { + constexpr auto AttributeIgnoreMask = + KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared; + return m_memory_state == s && m_permission == p && + (m_attribute | AttributeIgnoreMask) == (a | AttributeIgnoreMask); + } + + constexpr bool HasSameProperties(const KMemoryBlock& rhs) const { + return m_memory_state == rhs.m_memory_state && m_permission == rhs.m_permission && + m_original_permission == rhs.m_original_permission && + m_attribute == rhs.m_attribute && m_ipc_lock_count == rhs.m_ipc_lock_count && + m_device_use_count == rhs.m_device_use_count; + } + + constexpr bool CanMergeWith(const KMemoryBlock& rhs) const { + return this->HasSameProperties(rhs) && + (m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute::AllRight) == + KMemoryBlockDisableMergeAttribute::None && + (rhs.m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute::AllLeft) == + KMemoryBlockDisableMergeAttribute::None; } - void UnshareToDevice(KMemoryPermission /*new_perm*/) { - ASSERT((attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared); - const u16 prev_use_count{device_use_count--}; - ASSERT(prev_use_count > 0); - if (prev_use_count == 1) { - attribute &= ~KMemoryAttribute::DeviceShared; + constexpr bool Contains(VAddr addr) const { + return this->GetAddress() <= addr && addr <= this->GetEndAddress(); + } + + constexpr void Add(const KMemoryBlock& added_block) { + ASSERT(added_block.GetNumPages() > 0); + ASSERT(this->GetAddress() + added_block.GetSize() - 1 < + this->GetEndAddress() + added_block.GetSize() - 1); + + m_num_pages += added_block.GetNumPages(); + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute | added_block.m_disable_merge_attribute); + m_device_disable_merge_right_count = added_block.m_device_disable_merge_right_count; + } + + constexpr void Update(KMemoryState s, KMemoryPermission p, KMemoryAttribute a, + bool set_disable_merge_attr, u8 set_mask, u8 clear_mask) { + ASSERT(m_original_permission == KMemoryPermission::None); + ASSERT((m_attribute & KMemoryAttribute::IpcLocked) == KMemoryAttribute::None); + + m_memory_state = s; + m_permission = p; + m_attribute = static_cast<KMemoryAttribute>( + a | (m_attribute & (KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared))); + + if (set_disable_merge_attr && set_mask != 0) { + m_disable_merge_attribute = m_disable_merge_attribute | + static_cast<KMemoryBlockDisableMergeAttribute>(set_mask); + } + if (clear_mask != 0) { + m_disable_merge_attribute = m_disable_merge_attribute & + static_cast<KMemoryBlockDisableMergeAttribute>(~clear_mask); } } -private: - constexpr bool HasProperties(KMemoryState s, KMemoryPermission p, KMemoryAttribute a) const { - constexpr KMemoryAttribute AttributeIgnoreMask{KMemoryAttribute::DontCareMask | - KMemoryAttribute::IpcLocked | - KMemoryAttribute::DeviceShared}; - return state == s && perm == p && - (attribute | AttributeIgnoreMask) == (a | AttributeIgnoreMask); + constexpr void Split(KMemoryBlock* block, VAddr addr) { + ASSERT(this->GetAddress() < addr); + ASSERT(this->Contains(addr)); + ASSERT(Common::IsAligned(addr, PageSize)); + + block->m_address = m_address; + block->m_num_pages = (addr - this->GetAddress()) / PageSize; + block->m_memory_state = m_memory_state; + block->m_ipc_lock_count = m_ipc_lock_count; + block->m_device_use_count = m_device_use_count; + block->m_permission = m_permission; + block->m_original_permission = m_original_permission; + block->m_attribute = m_attribute; + block->m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute::AllLeft); + block->m_ipc_disable_merge_count = m_ipc_disable_merge_count; + block->m_device_disable_merge_left_count = m_device_disable_merge_left_count; + block->m_device_disable_merge_right_count = 0; + + m_address = addr; + m_num_pages -= block->m_num_pages; + + m_ipc_disable_merge_count = 0; + m_device_disable_merge_left_count = 0; + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute & KMemoryBlockDisableMergeAttribute::AllRight); } - constexpr bool HasSameProperties(const KMemoryBlock& rhs) const { - return state == rhs.state && perm == rhs.perm && original_perm == rhs.original_perm && - attribute == rhs.attribute && ipc_lock_count == rhs.ipc_lock_count && - device_use_count == rhs.device_use_count; + constexpr void UpdateDeviceDisableMergeStateForShareLeft( + [[maybe_unused]] KMemoryPermission new_perm, bool left, [[maybe_unused]] bool right) { + if (left) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute::DeviceLeft); + const u16 new_device_disable_merge_left_count = ++m_device_disable_merge_left_count; + ASSERT(new_device_disable_merge_left_count > 0); + } } - constexpr bool Contains(VAddr start) const { - return GetAddress() <= start && start <= GetEndAddress(); + constexpr void UpdateDeviceDisableMergeStateForShareRight( + [[maybe_unused]] KMemoryPermission new_perm, [[maybe_unused]] bool left, bool right) { + if (right) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute::DeviceRight); + const u16 new_device_disable_merge_right_count = ++m_device_disable_merge_right_count; + ASSERT(new_device_disable_merge_right_count > 0); + } + } + + constexpr void UpdateDeviceDisableMergeStateForShare(KMemoryPermission new_perm, bool left, + bool right) { + this->UpdateDeviceDisableMergeStateForShareLeft(new_perm, left, right); + this->UpdateDeviceDisableMergeStateForShareRight(new_perm, left, right); } - constexpr void Add(std::size_t count) { - ASSERT(count > 0); - ASSERT(GetAddress() + count * PageSize - 1 < GetEndAddress() + count * PageSize - 1); + constexpr void ShareToDevice([[maybe_unused]] KMemoryPermission new_perm, bool left, + bool right) { + // We must either be shared or have a zero lock count. + ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared || + m_device_use_count == 0); - num_pages += count; + // Share. + const u16 new_count = ++m_device_use_count; + ASSERT(new_count > 0); + + m_attribute = static_cast<KMemoryAttribute>(m_attribute | KMemoryAttribute::DeviceShared); + + this->UpdateDeviceDisableMergeStateForShare(new_perm, left, right); } - constexpr void Update(KMemoryState new_state, KMemoryPermission new_perm, - KMemoryAttribute new_attribute) { - ASSERT(original_perm == KMemoryPermission::None); - ASSERT((attribute & KMemoryAttribute::IpcLocked) == KMemoryAttribute::None); + constexpr void UpdateDeviceDisableMergeStateForUnshareLeft( + [[maybe_unused]] KMemoryPermission new_perm, bool left, [[maybe_unused]] bool right) { - state = new_state; - perm = new_perm; + if (left) { + if (!m_device_disable_merge_left_count) { + return; + } + --m_device_disable_merge_left_count; + } - attribute = static_cast<KMemoryAttribute>( - new_attribute | - (attribute & (KMemoryAttribute::IpcLocked | KMemoryAttribute::DeviceShared))); + m_device_disable_merge_left_count = + std::min(m_device_disable_merge_left_count, m_device_use_count); + + if (m_device_disable_merge_left_count == 0) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute::DeviceLeft); + } } - constexpr KMemoryBlock Split(VAddr split_addr) { - ASSERT(GetAddress() < split_addr); - ASSERT(Contains(split_addr)); - ASSERT(Common::IsAligned(split_addr, PageSize)); + constexpr void UpdateDeviceDisableMergeStateForUnshareRight( + [[maybe_unused]] KMemoryPermission new_perm, [[maybe_unused]] bool left, bool right) { + if (right) { + const u16 old_device_disable_merge_right_count = m_device_disable_merge_right_count--; + ASSERT(old_device_disable_merge_right_count > 0); + if (old_device_disable_merge_right_count == 1) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute::DeviceRight); + } + } + } - KMemoryBlock block; - block.addr = addr; - block.num_pages = (split_addr - GetAddress()) / PageSize; - block.state = state; - block.ipc_lock_count = ipc_lock_count; - block.device_use_count = device_use_count; - block.perm = perm; - block.original_perm = original_perm; - block.attribute = attribute; + constexpr void UpdateDeviceDisableMergeStateForUnshare(KMemoryPermission new_perm, bool left, + bool right) { + this->UpdateDeviceDisableMergeStateForUnshareLeft(new_perm, left, right); + this->UpdateDeviceDisableMergeStateForUnshareRight(new_perm, left, right); + } - addr = split_addr; - num_pages -= block.num_pages; + constexpr void UnshareToDevice([[maybe_unused]] KMemoryPermission new_perm, bool left, + bool right) { + // We must be shared. + ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared); + + // Unhare. + const u16 old_count = m_device_use_count--; + ASSERT(old_count > 0); + + if (old_count == 1) { + m_attribute = + static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute::DeviceShared); + } + + this->UpdateDeviceDisableMergeStateForUnshare(new_perm, left, right); + } + + constexpr void UnshareToDeviceRight([[maybe_unused]] KMemoryPermission new_perm, bool left, + bool right) { + + // We must be shared. + ASSERT((m_attribute & KMemoryAttribute::DeviceShared) == KMemoryAttribute::DeviceShared); + + // Unhare. + const u16 old_count = m_device_use_count--; + ASSERT(old_count > 0); + + if (old_count == 1) { + m_attribute = + static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute::DeviceShared); + } + + this->UpdateDeviceDisableMergeStateForUnshareRight(new_perm, left, right); + } + + constexpr void LockForIpc(KMemoryPermission new_perm, bool left, [[maybe_unused]] bool right) { + // We must either be locked or have a zero lock count. + ASSERT((m_attribute & KMemoryAttribute::IpcLocked) == KMemoryAttribute::IpcLocked || + m_ipc_lock_count == 0); + + // Lock. + const u16 new_lock_count = ++m_ipc_lock_count; + ASSERT(new_lock_count > 0); + + // If this is our first lock, update our permissions. + if (new_lock_count == 1) { + ASSERT(m_original_permission == KMemoryPermission::None); + ASSERT((m_permission | new_perm | KMemoryPermission::NotMapped) == + (m_permission | KMemoryPermission::NotMapped)); + ASSERT((m_permission & KMemoryPermission::UserExecute) != + KMemoryPermission::UserExecute || + (new_perm == KMemoryPermission::UserRead)); + m_original_permission = m_permission; + m_permission = static_cast<KMemoryPermission>( + (new_perm & KMemoryPermission::IpcLockChangeMask) | + (m_original_permission & ~KMemoryPermission::IpcLockChangeMask)); + } + m_attribute = static_cast<KMemoryAttribute>(m_attribute | KMemoryAttribute::IpcLocked); + + if (left) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute | KMemoryBlockDisableMergeAttribute::IpcLeft); + const u16 new_ipc_disable_merge_count = ++m_ipc_disable_merge_count; + ASSERT(new_ipc_disable_merge_count > 0); + } + } + + constexpr void UnlockForIpc([[maybe_unused]] KMemoryPermission new_perm, bool left, + [[maybe_unused]] bool right) { + // We must be locked. + ASSERT((m_attribute & KMemoryAttribute::IpcLocked) == KMemoryAttribute::IpcLocked); + + // Unlock. + const u16 old_lock_count = m_ipc_lock_count--; + ASSERT(old_lock_count > 0); + + // If this is our last unlock, update our permissions. + if (old_lock_count == 1) { + ASSERT(m_original_permission != KMemoryPermission::None); + m_permission = m_original_permission; + m_original_permission = KMemoryPermission::None; + m_attribute = static_cast<KMemoryAttribute>(m_attribute & ~KMemoryAttribute::IpcLocked); + } + + if (left) { + const u16 old_ipc_disable_merge_count = m_ipc_disable_merge_count--; + ASSERT(old_ipc_disable_merge_count > 0); + if (old_ipc_disable_merge_count == 1) { + m_disable_merge_attribute = static_cast<KMemoryBlockDisableMergeAttribute>( + m_disable_merge_attribute & ~KMemoryBlockDisableMergeAttribute::IpcLeft); + } + } + } - return block; + constexpr KMemoryBlockDisableMergeAttribute GetDisableMergeAttribute() const { + return m_disable_merge_attribute; } }; static_assert(std::is_trivially_destructible<KMemoryBlock>::value); |