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author | bunnei <bunneidev@gmail.com> | 2020-04-09 01:05:31 +0200 |
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committer | bunnei <bunneidev@gmail.com> | 2020-04-17 06:59:32 +0200 |
commit | 3fcc4cab4fcc7a3496e98fb699a96d21df90e512 (patch) | |
tree | fae88975e2e00c5514c348d851a13fc46a6045b9 /src/core/hle | |
parent | core: Construct/Destruct DeviceMemory on Init/Shutdown. (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/transfer_memory.cpp | 99 | ||||
-rw-r--r-- | src/core/hle/kernel/transfer_memory.h | 47 |
2 files changed, 16 insertions, 130 deletions
diff --git a/src/core/hle/kernel/transfer_memory.cpp b/src/core/hle/kernel/transfer_memory.cpp index 74514068e..765f408c3 100644 --- a/src/core/hle/kernel/transfer_memory.cpp +++ b/src/core/hle/kernel/transfer_memory.cpp @@ -2,10 +2,9 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. -#include "core/hle/kernel/errors.h" #include "core/hle/kernel/kernel.h" +#include "core/hle/kernel/memory/page_table.h" #include "core/hle/kernel/process.h" -#include "core/hle/kernel/shared_memory.h" #include "core/hle/kernel/transfer_memory.h" #include "core/hle/result.h" #include "core/memory.h" @@ -22,13 +21,13 @@ TransferMemory::~TransferMemory() { std::shared_ptr<TransferMemory> TransferMemory::Create(KernelCore& kernel, Core::Memory::Memory& memory, - VAddr base_address, u64 size, - MemoryPermission permissions) { + VAddr base_address, std::size_t size, + Memory::MemoryPermission permissions) { std::shared_ptr<TransferMemory> transfer_memory{ std::make_shared<TransferMemory>(kernel, memory)}; transfer_memory->base_address = base_address; - transfer_memory->memory_size = size; + transfer_memory->size = size; transfer_memory->owner_permissions = permissions; transfer_memory->owner_process = kernel.CurrentProcess(); @@ -39,98 +38,12 @@ const u8* TransferMemory::GetPointer() const { return memory.GetPointer(base_address); } -u64 TransferMemory::GetSize() const { - return memory_size; -} - -ResultCode TransferMemory::MapMemory(VAddr address, u64 size, MemoryPermission permissions) { - if (memory_size != size) { - return ERR_INVALID_SIZE; - } - - if (owner_permissions != permissions) { - return ERR_INVALID_STATE; - } - - if (is_mapped) { - return ERR_INVALID_STATE; - } - - backing_block = std::make_shared<PhysicalMemory>(size); - - const auto map_state = owner_permissions == MemoryPermission::None - ? MemoryState::TransferMemoryIsolated - : MemoryState::TransferMemory; - auto& vm_manager = owner_process->VMManager(); - const auto map_result = vm_manager.MapMemoryBlock(address, backing_block, 0, size, map_state); - if (map_result.Failed()) { - return map_result.Code(); - } - - is_mapped = true; - return RESULT_SUCCESS; -} - ResultCode TransferMemory::Reserve() { - auto& vm_manager{owner_process->VMManager()}; - const auto check_range_result{vm_manager.CheckRangeState( - base_address, memory_size, MemoryState::FlagTransfer | MemoryState::FlagMemoryPoolAllocated, - MemoryState::FlagTransfer | MemoryState::FlagMemoryPoolAllocated, VMAPermission::All, - VMAPermission::ReadWrite, MemoryAttribute::Mask, MemoryAttribute::None, - MemoryAttribute::IpcAndDeviceMapped)}; - - if (check_range_result.Failed()) { - return check_range_result.Code(); - } - - auto [state_, permissions_, attribute] = *check_range_result; - - if (const auto result{vm_manager.ReprotectRange( - base_address, memory_size, SharedMemory::ConvertPermissions(owner_permissions))}; - result.IsError()) { - return result; - } - - return vm_manager.SetMemoryAttribute(base_address, memory_size, MemoryAttribute::Mask, - attribute | MemoryAttribute::Locked); + return owner_process->PageTable().ReserveTransferMemory(base_address, size, owner_permissions); } ResultCode TransferMemory::Reset() { - auto& vm_manager{owner_process->VMManager()}; - if (const auto result{vm_manager.CheckRangeState( - base_address, memory_size, - MemoryState::FlagTransfer | MemoryState::FlagMemoryPoolAllocated, - MemoryState::FlagTransfer | MemoryState::FlagMemoryPoolAllocated, VMAPermission::None, - VMAPermission::None, MemoryAttribute::Mask, MemoryAttribute::Locked, - MemoryAttribute::IpcAndDeviceMapped)}; - result.Failed()) { - return result.Code(); - } - - if (const auto result{ - vm_manager.ReprotectRange(base_address, memory_size, VMAPermission::ReadWrite)}; - result.IsError()) { - return result; - } - - return vm_manager.SetMemoryAttribute(base_address, memory_size, MemoryAttribute::Mask, - MemoryAttribute::None); -} - -ResultCode TransferMemory::UnmapMemory(VAddr address, u64 size) { - if (memory_size != size) { - return ERR_INVALID_SIZE; - } - - auto& vm_manager = owner_process->VMManager(); - const auto result = vm_manager.UnmapRange(address, size); - - if (result.IsError()) { - return result; - } - - is_mapped = false; - return RESULT_SUCCESS; + return owner_process->PageTable().ResetTransferMemory(base_address, size); } } // namespace Kernel diff --git a/src/core/hle/kernel/transfer_memory.h b/src/core/hle/kernel/transfer_memory.h index a47f57714..05e9f7464 100644 --- a/src/core/hle/kernel/transfer_memory.h +++ b/src/core/hle/kernel/transfer_memory.h @@ -6,6 +6,7 @@ #include <memory> +#include "core/hle/kernel/memory/memory_block.h" #include "core/hle/kernel/object.h" #include "core/hle/kernel/physical_memory.h" @@ -20,8 +21,6 @@ namespace Kernel { class KernelCore; class Process; -enum class MemoryPermission : u32; - /// Defines the interface for transfer memory objects. /// /// Transfer memory is typically used for the purpose of @@ -36,8 +35,8 @@ public: static constexpr HandleType HANDLE_TYPE = HandleType::TransferMemory; static std::shared_ptr<TransferMemory> Create(KernelCore& kernel, Core::Memory::Memory& memory, - VAddr base_address, u64 size, - MemoryPermission permissions); + VAddr base_address, std::size_t size, + Memory::MemoryPermission permissions); TransferMemory(const TransferMemory&) = delete; TransferMemory& operator=(const TransferMemory&) = delete; @@ -61,29 +60,9 @@ public: const u8* GetPointer() const; /// Gets the size of the memory backing this instance in bytes. - u64 GetSize() const; - - /// Attempts to map transfer memory with the given range and memory permissions. - /// - /// @param address The base address to being mapping memory at. - /// @param size The size of the memory to map, in bytes. - /// @param permissions The memory permissions to check against when mapping memory. - /// - /// @pre The given address, size, and memory permissions must all match - /// the same values that were given when creating the transfer memory - /// instance. - /// - ResultCode MapMemory(VAddr address, u64 size, MemoryPermission permissions); - - /// Unmaps the transfer memory with the given range - /// - /// @param address The base address to begin unmapping memory at. - /// @param size The size of the memory to unmap, in bytes. - /// - /// @pre The given address and size must be the same as the ones used - /// to create the transfer memory instance. - /// - ResultCode UnmapMemory(VAddr address, u64 size); + constexpr std::size_t GetSize() const { + return size; + } /// Reserves the region to be used for the transfer memory, called after the transfer memory is /// created. @@ -94,23 +73,17 @@ public: ResultCode Reset(); private: - /// Memory block backing this instance. - std::shared_ptr<PhysicalMemory> backing_block; - /// The base address for the memory managed by this instance. - VAddr base_address = 0; + VAddr base_address{}; /// Size of the memory, in bytes, that this instance manages. - u64 memory_size = 0; + std::size_t size{}; /// The memory permissions that are applied to this instance. - MemoryPermission owner_permissions{}; + Memory::MemoryPermission owner_permissions{}; /// The process that this transfer memory instance was created under. - Process* owner_process = nullptr; - - /// Whether or not this transfer memory instance has mapped memory. - bool is_mapped = false; + Process* owner_process{}; Core::Memory::Memory& memory; }; |