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-rw-r--r--src/core/hle/kernel/k_page_table.cpp17
-rw-r--r--src/core/hle/kernel/k_page_table.h3
-rw-r--r--src/core/hle/kernel/k_transfer_memory.cpp89
-rw-r--r--src/core/hle/kernel/k_transfer_memory.h14
-rw-r--r--src/core/hle/kernel/svc/svc_transfer_memory.cpp54
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,
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 23:25:50 +0100