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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/alignment.h"
#include "common/scope_exit.h"
#include "core/core.h"
#include "core/hle/kernel/k_device_address_space.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/svc.h"
namespace Kernel::Svc {
constexpr inline u64 DeviceAddressSpaceAlignMask = (1ULL << 22) - 1;
constexpr bool IsProcessAndDeviceAligned(uint64_t process_address, uint64_t device_address) {
return (process_address & DeviceAddressSpaceAlignMask) ==
(device_address & DeviceAddressSpaceAlignMask);
}
Result CreateDeviceAddressSpace(Core::System& system, Handle* out, uint64_t das_address,
uint64_t das_size) {
// Validate input.
R_UNLESS(Common::IsAligned(das_address, PageSize), ResultInvalidMemoryRegion);
R_UNLESS(Common::IsAligned(das_size, PageSize), ResultInvalidMemoryRegion);
R_UNLESS(das_size > 0, ResultInvalidMemoryRegion);
R_UNLESS((das_address < das_address + das_size), ResultInvalidMemoryRegion);
// Create the device address space.
KDeviceAddressSpace* das = KDeviceAddressSpace::Create(system.Kernel());
R_UNLESS(das != nullptr, ResultOutOfResource);
SCOPE_EXIT({ das->Close(); });
// Initialize the device address space.
R_TRY(das->Initialize(das_address, das_size));
// Register the device address space.
KDeviceAddressSpace::Register(system.Kernel(), das);
// Add to the handle table.
R_TRY(GetCurrentProcess(system.Kernel()).GetHandleTable().Add(out, das));
R_SUCCEED();
}
Result AttachDeviceAddressSpace(Core::System& system, DeviceName device_name, Handle das_handle) {
// Get the device address space.
KScopedAutoObject das = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KDeviceAddressSpace>(das_handle);
R_UNLESS(das.IsNotNull(), ResultInvalidHandle);
// Attach.
R_RETURN(das->Attach(device_name));
}
Result DetachDeviceAddressSpace(Core::System& system, DeviceName device_name, Handle das_handle) {
// Get the device address space.
KScopedAutoObject das = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KDeviceAddressSpace>(das_handle);
R_UNLESS(das.IsNotNull(), ResultInvalidHandle);
// Detach.
R_RETURN(das->Detach(device_name));
}
constexpr bool IsValidDeviceMemoryPermission(MemoryPermission device_perm) {
switch (device_perm) {
case MemoryPermission::Read:
case MemoryPermission::Write:
case MemoryPermission::ReadWrite:
return true;
default:
return false;
}
}
Result MapDeviceAddressSpaceByForce(Core::System& system, Handle das_handle, Handle process_handle,
uint64_t process_address, uint64_t size,
uint64_t device_address, u32 option) {
// Decode the option.
const MapDeviceAddressSpaceOption option_pack{option};
const auto device_perm = option_pack.permission;
const auto reserved = option_pack.reserved;
// Validate input.
R_UNLESS(Common::IsAligned(process_address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(device_address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((process_address < process_address + size), ResultInvalidCurrentMemory);
R_UNLESS((device_address < device_address + size), ResultInvalidMemoryRegion);
R_UNLESS((process_address == static_cast<uint64_t>(process_address)),
ResultInvalidCurrentMemory);
R_UNLESS(IsValidDeviceMemoryPermission(device_perm), ResultInvalidNewMemoryPermission);
R_UNLESS(reserved == 0, ResultInvalidEnumValue);
// Get the device address space.
KScopedAutoObject das = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KDeviceAddressSpace>(das_handle);
R_UNLESS(das.IsNotNull(), ResultInvalidHandle);
// Get the process.
KScopedAutoObject process =
GetCurrentProcess(system.Kernel()).GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), ResultInvalidHandle);
// Validate that the process address is within range.
auto& page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(process_address, size), ResultInvalidCurrentMemory);
// Map.
R_RETURN(
das->MapByForce(std::addressof(page_table), process_address, size, device_address, option));
}
Result MapDeviceAddressSpaceAligned(Core::System& system, Handle das_handle, Handle process_handle,
uint64_t process_address, uint64_t size,
uint64_t device_address, u32 option) {
// Decode the option.
const MapDeviceAddressSpaceOption option_pack{option};
const auto device_perm = option_pack.permission;
const auto reserved = option_pack.reserved;
// Validate input.
R_UNLESS(Common::IsAligned(process_address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(device_address, PageSize), ResultInvalidAddress);
R_UNLESS(IsProcessAndDeviceAligned(process_address, device_address), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((process_address < process_address + size), ResultInvalidCurrentMemory);
R_UNLESS((device_address < device_address + size), ResultInvalidMemoryRegion);
R_UNLESS((process_address == static_cast<uint64_t>(process_address)),
ResultInvalidCurrentMemory);
R_UNLESS(IsValidDeviceMemoryPermission(device_perm), ResultInvalidNewMemoryPermission);
R_UNLESS(reserved == 0, ResultInvalidEnumValue);
// Get the device address space.
KScopedAutoObject das = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KDeviceAddressSpace>(das_handle);
R_UNLESS(das.IsNotNull(), ResultInvalidHandle);
// Get the process.
KScopedAutoObject process =
GetCurrentProcess(system.Kernel()).GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), ResultInvalidHandle);
// Validate that the process address is within range.
auto& page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(process_address, size), ResultInvalidCurrentMemory);
// Map.
R_RETURN(
das->MapAligned(std::addressof(page_table), process_address, size, device_address, option));
}
Result UnmapDeviceAddressSpace(Core::System& system, Handle das_handle, Handle process_handle,
uint64_t process_address, uint64_t size, uint64_t device_address) {
// Validate input.
R_UNLESS(Common::IsAligned(process_address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(device_address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((process_address < process_address + size), ResultInvalidCurrentMemory);
R_UNLESS((device_address < device_address + size), ResultInvalidMemoryRegion);
R_UNLESS((process_address == static_cast<uint64_t>(process_address)),
ResultInvalidCurrentMemory);
// Get the device address space.
KScopedAutoObject das = GetCurrentProcess(system.Kernel())
.GetHandleTable()
.GetObject<KDeviceAddressSpace>(das_handle);
R_UNLESS(das.IsNotNull(), ResultInvalidHandle);
// Get the process.
KScopedAutoObject process =
GetCurrentProcess(system.Kernel()).GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), ResultInvalidHandle);
// Validate that the process address is within range.
auto& page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(process_address, size), ResultInvalidCurrentMemory);
R_RETURN(das->Unmap(std::addressof(page_table), process_address, size, device_address));
}
Result CreateDeviceAddressSpace64(Core::System& system, Handle* out_handle, uint64_t das_address,
uint64_t das_size) {
R_RETURN(CreateDeviceAddressSpace(system, out_handle, das_address, das_size));
}
Result AttachDeviceAddressSpace64(Core::System& system, DeviceName device_name, Handle das_handle) {
R_RETURN(AttachDeviceAddressSpace(system, device_name, das_handle));
}
Result DetachDeviceAddressSpace64(Core::System& system, DeviceName device_name, Handle das_handle) {
R_RETURN(DetachDeviceAddressSpace(system, device_name, das_handle));
}
Result MapDeviceAddressSpaceByForce64(Core::System& system, Handle das_handle,
Handle process_handle, uint64_t process_address,
uint64_t size, uint64_t device_address, u32 option) {
R_RETURN(MapDeviceAddressSpaceByForce(system, das_handle, process_handle, process_address, size,
device_address, option));
}
Result MapDeviceAddressSpaceAligned64(Core::System& system, Handle das_handle,
Handle process_handle, uint64_t process_address,
uint64_t size, uint64_t device_address, u32 option) {
R_RETURN(MapDeviceAddressSpaceAligned(system, das_handle, process_handle, process_address, size,
device_address, option));
}
Result UnmapDeviceAddressSpace64(Core::System& system, Handle das_handle, Handle process_handle,
uint64_t process_address, uint64_t size, uint64_t device_address) {
R_RETURN(UnmapDeviceAddressSpace(system, das_handle, process_handle, process_address, size,
device_address));
}
Result CreateDeviceAddressSpace64From32(Core::System& system, Handle* out_handle,
uint64_t das_address, uint64_t das_size) {
R_RETURN(CreateDeviceAddressSpace(system, out_handle, das_address, das_size));
}
Result AttachDeviceAddressSpace64From32(Core::System& system, DeviceName device_name,
Handle das_handle) {
R_RETURN(AttachDeviceAddressSpace(system, device_name, das_handle));
}
Result DetachDeviceAddressSpace64From32(Core::System& system, DeviceName device_name,
Handle das_handle) {
R_RETURN(DetachDeviceAddressSpace(system, device_name, das_handle));
}
Result MapDeviceAddressSpaceByForce64From32(Core::System& system, Handle das_handle,
Handle process_handle, uint64_t process_address,
uint32_t size, uint64_t device_address, u32 option) {
R_RETURN(MapDeviceAddressSpaceByForce(system, das_handle, process_handle, process_address, size,
device_address, option));
}
Result MapDeviceAddressSpaceAligned64From32(Core::System& system, Handle das_handle,
Handle process_handle, uint64_t process_address,
uint32_t size, uint64_t device_address, u32 option) {
R_RETURN(MapDeviceAddressSpaceAligned(system, das_handle, process_handle, process_address, size,
device_address, option));
}
Result UnmapDeviceAddressSpace64From32(Core::System& system, Handle das_handle,
Handle process_handle, uint64_t process_address,
uint32_t size, uint64_t device_address) {
R_RETURN(UnmapDeviceAddressSpace(system, das_handle, process_handle, process_address, size,
device_address));
}
} // namespace Kernel::Svc
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