private static int Alloc(ServiceCtx context)
{
long inputPosition = context.Request.GetBufferType0x21().Position;
long outputPosition = context.Request.GetBufferType0x22().Position;
NvMapAlloc args = MemoryHelper.Read <NvMapAlloc>(context.Memory, inputPosition);
NvMapHandle map = GetNvMap(context, args.Handle);
if (map == null)
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{args.Handle:x8}!");
return(NvResult.InvalidInput);
}
if ((args.Align & (args.Align - 1)) != 0)
{
Logger.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 = BitUtils.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.
// TODO: Is this allocation inside the transfer memory?
result = NvResult.OutOfMemory;
}
if (result == NvResult.Success)
{
map.Size = size;
map.Address = address;
}
}
MemoryHelper.Write(context.Memory, outputPosition, args);
return(result);
}
private NvInternalResult Alloc(ref NvMapAlloc arguments)
{
NvMapHandle map = GetMapFromHandle(Owner, arguments.Handle);
if (map == null)
{
Logger.Warning?.Print(LogClass.ServiceNv, $"Invalid handle 0x{arguments.Handle:x8}!");
return(NvInternalResult.InvalidInput);
}
if ((arguments.Align & (arguments.Align - 1)) != 0)
{
Logger.Warning?.Print(LogClass.ServiceNv, $"Invalid alignment 0x{arguments.Align:x8}!");
return(NvInternalResult.InvalidInput);
}
if ((uint)arguments.Align < MemoryManager.PageSize)
{
arguments.Align = (int)MemoryManager.PageSize;
}
NvInternalResult result = NvInternalResult.Success;
if (!map.Allocated)
{
map.Allocated = true;
map.Align = arguments.Align;
map.Kind = (byte)arguments.Kind;
int size = BitUtils.AlignUp(map.Size, (int)MemoryManager.PageSize);
long address = arguments.Address;
if (address == 0)
{
// When the address is zero, we need to allocate
// our own backing memory for the NvMap.
// TODO: Is this allocation inside the transfer memory?
result = NvInternalResult.OutOfMemory;
}
if (result == NvInternalResult.Success)
{
map.Size = size;
map.Address = address;
}
}
return(result);
}