private static int FreeSpace(ServiceCtx context)
{
long inputPosition = context.Request.GetBufferType0x21().Position;
long outputPosition = context.Request.GetBufferType0x22().Position;
NvGpuASAllocSpace args = MemoryHelper.Read <NvGpuASAllocSpace>(context.Memory, inputPosition);
NvGpuASCtx asCtx = GetASCtx(context);
int result = NvResult.Success;
lock (asCtx)
{
ulong size = (ulong)args.Pages *
(ulong)args.PageSize;
if (asCtx.RemoveReservation(args.Offset))
{
asCtx.Vmm.Free(args.Offset, (long)size);
}
else
{
Logger.PrintWarning(LogClass.ServiceNv,
$"Failed to free offset 0x{args.Offset:x16} size 0x{size:x16}!");
result = NvResult.InvalidInput;
}
}
return(result);
}
private static int AllocSpace(ServiceCtx context)
{
long inputPosition = context.Request.GetBufferType0x21().Position;
long outputPosition = context.Request.GetBufferType0x22().Position;
NvGpuASAllocSpace args = MemoryHelper.Read <NvGpuASAllocSpace>(context.Memory, inputPosition);
NvGpuASCtx asCtx = GetASCtx(context);
ulong size = (ulong)args.Pages *
(ulong)args.PageSize;
int result = NvResult.Success;
lock (asCtx)
{
// Note: When the fixed offset flag is not set,
// the Offset field holds the alignment size instead.
if ((args.Flags & FlagFixedOffset) != 0)
{
args.Offset = asCtx.Vmm.ReserveFixed(args.Offset, (long)size);
}
else
{
args.Offset = asCtx.Vmm.Reserve((long)size, args.Offset);
}
if (args.Offset < 0)
{
args.Offset = 0;
Logger.PrintWarning(LogClass.ServiceNv, $"Failed to allocate size {size:x16}!");
result = NvResult.OutOfMemory;
}
else
{
asCtx.AddReservation(args.Offset, (long)size);
}
}
MemoryHelper.Write(context.Memory, outputPosition, args);
return(result);
}
