private static int UnmapBuffer(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
NvHostChannelMapBuffer Args = MemoryHelper.Read <NvHostChannelMapBuffer>(Context.Memory, InputPosition);
NvGpuVmm Vmm = NvGpuASIoctl.GetASCtx(Context).Vmm;
for (int Index = 0; Index < Args.NumEntries; Index++)
{
int Handle = Context.Memory.ReadInt32(InputPosition + 0xc + Index * 8);
NvMapHandle Map = NvMapIoctl.GetNvMap(Context, Handle);
if (Map == null)
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{Handle:x8}!");
return(NvResult.InvalidInput);
}
lock (Map)
{
if (Map.DmaMapAddress != 0)
{
Vmm.Free(Map.DmaMapAddress, Map.Size);
Map.DmaMapAddress = 0;
}
}
}
return(NvResult.Success);
}
private static int UnmapBuffer(ServiceCtx context)
{
long inputPosition = context.Request.GetBufferType0x21().Position;
NvHostChannelMapBuffer args = MemoryHelper.Read <NvHostChannelMapBuffer>(context.Memory, inputPosition);
NvGpuVmm vmm = NvGpuASIoctl.GetASCtx(context).Vmm;
for (int index = 0; index < args.NumEntries; index++)
{
int handle = context.Memory.ReadInt32(inputPosition + 0xc + index * 8);
NvMapHandle map = NvMapIoctl.GetNvMap(context, handle);
if (map == null)
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{handle:x8}!");
return(NvResult.InvalidInput);
}
lock (map)
{
if (map.DmaMapAddress != 0)
{
vmm.Free(map.DmaMapAddress, map.Size);
map.DmaMapAddress = 0;
}
}
}
return(NvResult.Success);
}
private NvInternalResult UnmapCommandBuffer(Span <byte> arguments)
{
int headerSize = Unsafe.SizeOf <MapCommandBufferArguments>();
MapCommandBufferArguments commandBufferHeader = MemoryMarshal.Cast <byte, MapCommandBufferArguments>(arguments)[0];
Span <CommandBufferHandle> commandBufferEntries = MemoryMarshal.Cast <byte, CommandBufferHandle>(arguments.Slice(headerSize)).Slice(0, commandBufferHeader.NumEntries);
NvGpuVmm vmm = NvHostAsGpuDeviceFile.GetAddressSpaceContext(Owner).Vmm;
foreach (ref CommandBufferHandle commandBufferEntry in commandBufferEntries)
{
NvMapHandle map = NvMapDeviceFile.GetMapFromHandle(Owner, commandBufferEntry.MapHandle);
if (map == null)
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid handle 0x{commandBufferEntry.MapHandle:x8}!");
return(NvInternalResult.InvalidInput);
}
lock (map)
{
if (map.DmaMapAddress != 0)
{
vmm.Free(map.DmaMapAddress, map.Size);
map.DmaMapAddress = 0;
}
}
}
return(NvInternalResult.Success);
}
private static int FreeSpace(ServiceCtx Context)
{
long InputPosition = Context.Request.GetBufferType0x21().Position;
long OutputPosition = Context.Request.GetBufferType0x22().Position;
NvGpuASAllocSpace Args = AMemoryHelper.Read <NvGpuASAllocSpace>(Context.Memory, InputPosition);
NvGpuVmm Vmm = GetVmm(Context);
ulong Size = (ulong)Args.Pages *
(ulong)Args.PageSize;
Vmm.Free(Args.Offset, (long)Size);
return(NvResult.Success);
}