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author | Fernando S <fsahmkow27@gmail.com> | 2023-10-10 11:45:56 +0200 |
---|---|---|
committer | GitHub <noreply@github.com> | 2023-10-10 11:45:56 +0200 |
commit | 8ac8d703b9af7ebe858cb8957d42eb42c5ffdf75 (patch) | |
tree | 55fbc13601b432c459ed07ae60eb308f284d94cc /src/core/hle/kernel | |
parent | Merge pull request #11716 from Squall-Leonhart/Z327444 (diff) | |
parent | kernel: implement transfer memory (diff) | |
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Diffstat (limited to 'src/core/hle/kernel')
-rw-r--r-- | src/core/hle/kernel/k_page_table.cpp | 17 | ||||
-rw-r--r-- | src/core/hle/kernel/k_page_table.h | 3 | ||||
-rw-r--r-- | src/core/hle/kernel/k_transfer_memory.cpp | 89 | ||||
-rw-r--r-- | src/core/hle/kernel/k_transfer_memory.h | 14 | ||||
-rw-r--r-- | src/core/hle/kernel/svc/svc_transfer_memory.cpp | 54 |
5 files changed, 160 insertions, 17 deletions
diff --git a/src/core/hle/kernel/k_page_table.cpp b/src/core/hle/kernel/k_page_table.cpp index 5b51edf30..1fbfbf31f 100644 --- a/src/core/hle/kernel/k_page_table.cpp +++ b/src/core/hle/kernel/k_page_table.cpp @@ -2949,6 +2949,23 @@ Result KPageTable::UnlockForIpcUserBuffer(KProcessAddress address, size_t size) KMemoryAttribute::Locked, nullptr)); } +Result KPageTable::LockForTransferMemory(KPageGroup* out, KProcessAddress address, size_t size, + KMemoryPermission perm) { + R_RETURN(this->LockMemoryAndOpen(out, nullptr, address, size, KMemoryState::FlagCanTransfer, + KMemoryState::FlagCanTransfer, KMemoryPermission::All, + KMemoryPermission::UserReadWrite, KMemoryAttribute::All, + KMemoryAttribute::None, perm, KMemoryAttribute::Locked)); +} + +Result KPageTable::UnlockForTransferMemory(KProcessAddress address, size_t size, + const KPageGroup& pg) { + R_RETURN(this->UnlockMemory(address, size, KMemoryState::FlagCanTransfer, + KMemoryState::FlagCanTransfer, KMemoryPermission::None, + KMemoryPermission::None, KMemoryAttribute::All, + KMemoryAttribute::Locked, KMemoryPermission::UserReadWrite, + KMemoryAttribute::Locked, std::addressof(pg))); +} + Result KPageTable::LockForCodeMemory(KPageGroup* out, KProcessAddress addr, size_t size) { R_RETURN(this->LockMemoryAndOpen( out, nullptr, addr, size, KMemoryState::FlagCanCodeMemory, KMemoryState::FlagCanCodeMemory, diff --git a/src/core/hle/kernel/k_page_table.h b/src/core/hle/kernel/k_page_table.h index b9e8c6042..7da675f27 100644 --- a/src/core/hle/kernel/k_page_table.h +++ b/src/core/hle/kernel/k_page_table.h @@ -104,6 +104,9 @@ public: Result CleanupForIpcServer(KProcessAddress address, size_t size, KMemoryState dst_state); Result CleanupForIpcClient(KProcessAddress address, size_t size, KMemoryState dst_state); + Result LockForTransferMemory(KPageGroup* out, KProcessAddress address, size_t size, + KMemoryPermission perm); + Result UnlockForTransferMemory(KProcessAddress address, size_t size, const KPageGroup& pg); Result LockForCodeMemory(KPageGroup* out, KProcessAddress addr, size_t size); Result UnlockForCodeMemory(KProcessAddress addr, size_t size, const KPageGroup& pg); Result MakeAndOpenPageGroup(KPageGroup* out, KProcessAddress address, size_t num_pages, diff --git a/src/core/hle/kernel/k_transfer_memory.cpp b/src/core/hle/kernel/k_transfer_memory.cpp index 13d34125c..0e2e11743 100644 --- a/src/core/hle/kernel/k_transfer_memory.cpp +++ b/src/core/hle/kernel/k_transfer_memory.cpp @@ -1,6 +1,7 @@ // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project // SPDX-License-Identifier: GPL-2.0-or-later +#include "common/scope_exit.h" #include "core/hle/kernel/k_process.h" #include "core/hle/kernel/k_resource_limit.h" #include "core/hle/kernel/k_transfer_memory.h" @@ -9,28 +10,50 @@ namespace Kernel { KTransferMemory::KTransferMemory(KernelCore& kernel) - : KAutoObjectWithSlabHeapAndContainer{kernel} {} + : KAutoObjectWithSlabHeapAndContainer{kernel}, m_lock{kernel} {} KTransferMemory::~KTransferMemory() = default; -Result KTransferMemory::Initialize(KProcessAddress address, std::size_t size, - Svc::MemoryPermission owner_perm) { +Result KTransferMemory::Initialize(KProcessAddress addr, std::size_t size, + Svc::MemoryPermission own_perm) { // Set members. m_owner = GetCurrentProcessPointer(m_kernel); - // TODO(bunnei): Lock for transfer memory + // Get the owner page table. + auto& page_table = m_owner->GetPageTable(); + + // Construct the page group, guarding to make sure our state is valid on exit. + m_page_group.emplace(m_kernel, page_table.GetBlockInfoManager()); + auto pg_guard = SCOPE_GUARD({ m_page_group.reset(); }); + + // Lock the memory. + R_TRY(page_table.LockForTransferMemory(std::addressof(*m_page_group), addr, size, + ConvertToKMemoryPermission(own_perm))); // Set remaining tracking members. m_owner->Open(); - m_owner_perm = owner_perm; - m_address = address; - m_size = size; + m_owner_perm = own_perm; + m_address = addr; m_is_initialized = true; + m_is_mapped = false; + // We succeeded. + pg_guard.Cancel(); R_SUCCEED(); } -void KTransferMemory::Finalize() {} +void KTransferMemory::Finalize() { + // Unlock. + if (!m_is_mapped) { + const size_t size = m_page_group->GetNumPages() * PageSize; + ASSERT(R_SUCCEEDED( + m_owner->GetPageTable().UnlockForTransferMemory(m_address, size, *m_page_group))); + } + + // Close the page group. + m_page_group->Close(); + m_page_group->Finalize(); +} void KTransferMemory::PostDestroy(uintptr_t arg) { KProcess* owner = reinterpret_cast<KProcess*>(arg); @@ -38,4 +61,54 @@ void KTransferMemory::PostDestroy(uintptr_t arg) { owner->Close(); } +Result KTransferMemory::Map(KProcessAddress address, size_t size, Svc::MemoryPermission map_perm) { + // Validate the size. + R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Validate the permission. + R_UNLESS(m_owner_perm == map_perm, ResultInvalidState); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Ensure we're not already mapped. + R_UNLESS(!m_is_mapped, ResultInvalidState); + + // Map the memory. + const KMemoryState state = (m_owner_perm == Svc::MemoryPermission::None) + ? KMemoryState::Transfered + : KMemoryState::SharedTransfered; + R_TRY(GetCurrentProcess(m_kernel).GetPageTable().MapPageGroup( + address, *m_page_group, state, KMemoryPermission::UserReadWrite)); + + // Mark ourselves as mapped. + m_is_mapped = true; + + R_SUCCEED(); +} + +Result KTransferMemory::Unmap(KProcessAddress address, size_t size) { + // Validate the size. + R_UNLESS(m_page_group->GetNumPages() == Common::DivideUp(size, PageSize), ResultInvalidSize); + + // Lock ourselves. + KScopedLightLock lk(m_lock); + + // Unmap the memory. + const KMemoryState state = (m_owner_perm == Svc::MemoryPermission::None) + ? KMemoryState::Transfered + : KMemoryState::SharedTransfered; + R_TRY(GetCurrentProcess(m_kernel).GetPageTable().UnmapPageGroup(address, *m_page_group, state)); + + // Mark ourselves as unmapped. + ASSERT(m_is_mapped); + m_is_mapped = false; + + R_SUCCEED(); +} + +size_t KTransferMemory::GetSize() const { + return m_is_initialized ? m_page_group->GetNumPages() * PageSize : 0; +} + } // namespace Kernel diff --git a/src/core/hle/kernel/k_transfer_memory.h b/src/core/hle/kernel/k_transfer_memory.h index 54f97ccb4..8a0b08761 100644 --- a/src/core/hle/kernel/k_transfer_memory.h +++ b/src/core/hle/kernel/k_transfer_memory.h @@ -3,6 +3,9 @@ #pragma once +#include <optional> + +#include "core/hle/kernel/k_page_group.h" #include "core/hle/kernel/slab_helpers.h" #include "core/hle/kernel/svc_types.h" #include "core/hle/result.h" @@ -48,16 +51,19 @@ public: return m_address; } - size_t GetSize() const { - return m_is_initialized ? m_size : 0; - } + size_t GetSize() const; + + Result Map(KProcessAddress address, size_t size, Svc::MemoryPermission map_perm); + Result Unmap(KProcessAddress address, size_t size); private: + std::optional<KPageGroup> m_page_group{}; KProcess* m_owner{}; KProcessAddress m_address{}; + KLightLock m_lock; Svc::MemoryPermission m_owner_perm{}; - size_t m_size{}; bool m_is_initialized{}; + bool m_is_mapped{}; }; } // namespace Kernel diff --git a/src/core/hle/kernel/svc/svc_transfer_memory.cpp b/src/core/hle/kernel/svc/svc_transfer_memory.cpp index 7d94e7f09..1f97121b3 100644 --- a/src/core/hle/kernel/svc/svc_transfer_memory.cpp +++ b/src/core/hle/kernel/svc/svc_transfer_memory.cpp @@ -71,15 +71,59 @@ Result CreateTransferMemory(Core::System& system, Handle* out, u64 address, u64 } Result MapTransferMemory(Core::System& system, Handle trmem_handle, uint64_t address, uint64_t size, - MemoryPermission owner_perm) { - UNIMPLEMENTED(); - R_THROW(ResultNotImplemented); + MemoryPermission map_perm) { + // Validate the address/size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Validate the permission. + R_UNLESS(IsValidTransferMemoryPermission(map_perm), ResultInvalidState); + + // Get the transfer memory. + KScopedAutoObject trmem = GetCurrentProcess(system.Kernel()) + .GetHandleTable() + .GetObject<KTransferMemory>(trmem_handle); + R_UNLESS(trmem.IsNotNull(), ResultInvalidHandle); + + // Verify that the mapping is in range. + R_UNLESS(GetCurrentProcess(system.Kernel()) + .GetPageTable() + .CanContain(address, size, KMemoryState::Transfered), + ResultInvalidMemoryRegion); + + // Map the transfer memory. + R_TRY(trmem->Map(address, size, map_perm)); + + // We succeeded. + R_SUCCEED(); } Result UnmapTransferMemory(Core::System& system, Handle trmem_handle, uint64_t address, uint64_t size) { - UNIMPLEMENTED(); - R_THROW(ResultNotImplemented); + // Validate the address/size. + R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress); + R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize); + R_UNLESS(size > 0, ResultInvalidSize); + R_UNLESS((address < address + size), ResultInvalidCurrentMemory); + + // Get the transfer memory. + KScopedAutoObject trmem = GetCurrentProcess(system.Kernel()) + .GetHandleTable() + .GetObject<KTransferMemory>(trmem_handle); + R_UNLESS(trmem.IsNotNull(), ResultInvalidHandle); + + // Verify that the mapping is in range. + R_UNLESS(GetCurrentProcess(system.Kernel()) + .GetPageTable() + .CanContain(address, size, KMemoryState::Transfered), + ResultInvalidMemoryRegion); + + // Unmap the transfer memory. + R_TRY(trmem->Unmap(address, size)); + + R_SUCCEED(); } Result MapTransferMemory64(Core::System& system, Handle trmem_handle, uint64_t address, |