private static int Create(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21Position();
long OutputPosition = Context.Request.GetBufferType0x22Position();
NvMapCreate Args = AMemoryHelper.Read <NvMapCreate>(Context.Memory, InputPosition);
if (Args.Size == 0)
{
Context.Ns.Log.PrintWarning(LogClass.ServiceNv, $"Invalid size 0x{Args.Size:x8}!");
return(NvResult.InvalidInput);
}
int Size = IntUtils.RoundUp(Args.Size, NvGpuVmm.PageSize);
Args.Handle = AddNvMap(Context, new NvMapHandle(Size));
Context.Ns.Log.PrintInfo(LogClass.ServiceNv, $"Created map {Args.Handle} with size 0x{Size:x8}!");
AMemoryHelper.Write(Context.Memory, OutputPosition, Args);
return(NvResult.Success);
}
private static int Alloc(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21Position();
long OutputPosition = Context.Request.GetBufferType0x22Position();
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.RoundUp(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);
}
