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using Ryujinx.Common.Logging;
using System;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
namespace Ryujinx.HLE.HOS.Services.Nv.NvDrvServices
{
abstract class NvDeviceFile
{
public readonly ServiceCtx Context;
public readonly ulong Owner;
public string Path;
public NvDeviceFile(ServiceCtx context, ulong owner)
{
Context = context;
Owner = owner;
}
public virtual NvInternalResult QueryEvent(out int eventHandle, uint eventId)
{
eventHandle = 0;
return NvInternalResult.NotImplemented;
}
public virtual NvInternalResult MapSharedMemory(int sharedMemoryHandle, uint argument)
{
// Close shared memory immediately as we don't use it.
Context.Device.System.KernelContext.Syscall.CloseHandle(sharedMemoryHandle);
return NvInternalResult.NotImplemented;
}
public virtual NvInternalResult Ioctl(NvIoctl command, Span<byte> arguments)
{
return NvInternalResult.NotImplemented;
}
public virtual NvInternalResult Ioctl2(NvIoctl command, Span<byte> arguments, Span<byte> inlineInBuffer)
{
return NvInternalResult.NotImplemented;
}
public virtual NvInternalResult Ioctl3(NvIoctl command, Span<byte> arguments, Span<byte> inlineOutBuffer)
{
return NvInternalResult.NotImplemented;
}
protected delegate NvInternalResult IoctlProcessor<T>(ref T arguments);
protected delegate NvInternalResult IoctlProcessorSpan<T>(Span<T> arguments);
protected delegate NvInternalResult IoctlProcessorInline<T, T1>(ref T arguments, ref T1 inlineData);
protected delegate NvInternalResult IoctlProcessorInlineSpan<T, T1>(ref T arguments, Span<T1> inlineData);
private static NvInternalResult PrintResult(MethodInfo info, NvInternalResult result)
{
Logger.Debug?.Print(LogClass.ServiceNv, $"{info.Name} returned result {result}");
return result;
}
protected static NvInternalResult CallIoctlMethod<T>(IoctlProcessor<T> callback, Span<byte> arguments) where T : struct
{
Debug.Assert(arguments.Length == Unsafe.SizeOf<T>());
return PrintResult(callback.Method, callback(ref MemoryMarshal.Cast<byte, T>(arguments)[0]));
}
protected static NvInternalResult CallIoctlMethod<T, T1>(IoctlProcessorInline<T, T1> callback, Span<byte> arguments, Span<byte> inlineBuffer) where T : struct where T1 : struct
{
Debug.Assert(arguments.Length == Unsafe.SizeOf<T>());
Debug.Assert(inlineBuffer.Length == Unsafe.SizeOf<T1>());
return PrintResult(callback.Method, callback(ref MemoryMarshal.Cast<byte, T>(arguments)[0], ref MemoryMarshal.Cast<byte, T1>(inlineBuffer)[0]));
}
protected static NvInternalResult CallIoctlMethod<T>(IoctlProcessorSpan<T> callback, Span<byte> arguments) where T : struct
{
return PrintResult(callback.Method, callback(MemoryMarshal.Cast<byte, T>(arguments)));
}
protected static NvInternalResult CallIoctlMethod<T, T1>(IoctlProcessorInlineSpan<T, T1> callback, Span<byte> arguments, Span<byte> inlineBuffer) where T : struct where T1 : struct
{
Debug.Assert(arguments.Length == Unsafe.SizeOf<T>());
return PrintResult(callback.Method, callback(ref MemoryMarshal.Cast<byte, T>(arguments)[0], MemoryMarshal.Cast<byte, T1>(inlineBuffer)));
}
public abstract void Close();
}
}
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