private static int GetId(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
long OutputPosition = Context.Request.GetBufferType0x22().Position;
NvMapGetId Args = AMemoryHelper.Read <NvMapGetId>(Context.Memory, InputPosition);
NvMapHandle Map = GetNvMap(Context, Args.Handle);
if (Map == null)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{Args.Handle:x8}!");
return(NvResult.InvalidInput);
}
Args.Id = Args.Handle;
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
return(NvResult.Success);
}
private static int Free(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
long OutputPosition = Context.Request.GetBufferType0x22().Position;
NvMapFree Args = AMemoryHelper.Read <NvMapFree>(Context.Memory, InputPosition);
NvMapHandle Map = GetNvMap(Context, Args.Handle);
if (Map == null)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{Args.Handle:x8}!");
return(NvResult.InvalidInput);
}
long OldRefCount = Map.DecrementRefCount();
if (OldRefCount <= 1)
{
DeleteNvMap(Context, Args.Handle);
Context.Ns.Log.PrintInfo(LogClass.ServiceNv, $"Deleted map {Args.Handle}!");
Args.Flags = 0;
}
else
{
Args.Flags = FlagNotFreedYet;
}
Args.RefCount = OldRefCount;
Args.Size = Map.Size;
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
return(NvResult.Success);
}
private static int Param(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
long OutputPosition = Context.Request.GetBufferType0x22().Position;
NvMapParam Args = AMemoryHelper.Read <NvMapParam>(Context.Memory, InputPosition);
NvMapHandle Map = GetNvMap(Context, Args.Handle);
if (Map == null)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{Args.Handle:x8}!");
return(NvResult.InvalidInput);
}
switch ((NvMapHandleParam)Args.Param)
{
case NvMapHandleParam.Size: Args.Result = Map.Size; break;
case NvMapHandleParam.Align: Args.Result = Map.Align; break;
case NvMapHandleParam.Heap: Args.Result = 0x40000000; break;
case NvMapHandleParam.Kind: Args.Result = Map.Kind; break;
case NvMapHandleParam.Compr: Args.Result = 0; break;
//Note: Base is not supported and returns an error.
//Any other value also returns an error.
default: return(NvResult.InvalidInput);
}
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
return(NvResult.Success);
}
private static int Alloc(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
long OutputPosition = Context.Request.GetBufferType0x22().Position;
NvMapAlloc Args = AMemoryHelper.Read <NvMapAlloc>(Context.Memory, InputPosition);
NvMapHandle Map = GetNvMap(Context, Args.Handle);
if (Map == null)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{Args.Handle:x8}!");
return(NvResult.InvalidInput);
}
if ((Args.Align & (Args.Align - 1)) != 0)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid alignment 0x{Args.Align:x8}!");
return(NvResult.InvalidInput);
}
if ((uint)Args.Align < NvGpuVmm.PageSize)
{
Args.Align = NvGpuVmm.PageSize;
}
int Result = NvResult.Success;
if (!Map.Allocated)
{
Map.Allocated = true;
Map.Align = Args.Align;
Map.Kind = (byte)Args.Kind;
int Size = IntUtils.AlignUp(Map.Size, NvGpuVmm.PageSize);
long Address = Args.Address;
if (Address == 0)
{
//When the address is zero, we need to allocate
//our own backing memory for the NvMap.
if (!Context.Ns.Os.Allocator.TryAllocate((uint)Size, out Address))
{
Result = NvResult.OutOfMemory;
}
}
if (Result == NvResult.Success)
{
Map.Size = Size;
Map.Address = Address;
}
}
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
return(Result);
}
