private static int UnmapBuffer(ServiceCtx context)
{
long inputPosition = context.Request.GetBufferType0x21().Position;
long outputPosition = context.Request.GetBufferType0x22().Position;
NvGpuASUnmapBuffer args = MemoryHelper.Read <NvGpuASUnmapBuffer>(context.Memory, inputPosition);
NvGpuASCtx asCtx = GetASCtx(context);
lock (asCtx)
{
if (asCtx.RemoveMap(args.Offset, out long size))
{
if (size != 0)
{
asCtx.Vmm.Free(args.Offset, size);
}
}
else
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid buffer offset {args.Offset:x16}!");
}
}
return(NvResult.Success);
}
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);
}
private static int MapBufferEx(ServiceCtx context)
{
const string mapErrorMsg = "Failed to map fixed buffer with offset 0x{0:x16} and size 0x{1:x16}!";
long inputPosition = context.Request.GetBufferType0x21().Position;
long outputPosition = context.Request.GetBufferType0x22().Position;
NvGpuASMapBufferEx args = MemoryHelper.Read <NvGpuASMapBufferEx>(context.Memory, inputPosition);
NvGpuASCtx asCtx = GetASCtx(context);
NvMapHandle map = NvMapIoctl.GetNvMapWithFb(context, args.NvMapHandle);
if (map == null)
{
Logger.PrintWarning(LogClass.ServiceNv, $"Invalid NvMap handle 0x{args.NvMapHandle:x8}!");
return(NvResult.InvalidInput);
}
long pa;
if ((args.Flags & FlagRemapSubRange) != 0)
{
lock (asCtx)
{
if (asCtx.TryGetMapPhysicalAddress(args.Offset, out pa))
{
long va = args.Offset + args.BufferOffset;
pa += args.BufferOffset;
if (asCtx.Vmm.Map(pa, va, args.MappingSize) < 0)
{
string msg = string.Format(mapErrorMsg, va, args.MappingSize);
Logger.PrintWarning(LogClass.ServiceNv, msg);
return(NvResult.InvalidInput);
}
return(NvResult.Success);
}
else
{
Logger.PrintWarning(LogClass.ServiceNv, $"Address 0x{args.Offset:x16} not mapped!");
return(NvResult.InvalidInput);
}
}
}
pa = map.Address + args.BufferOffset;
long size = args.MappingSize;
if (size == 0)
{
size = (uint)map.Size;
}
int result = NvResult.Success;
lock (asCtx)
{
// Note: When the fixed offset flag is not set,
// the Offset field holds the alignment size instead.
bool vaAllocated = (args.Flags & FlagFixedOffset) == 0;
if (!vaAllocated)
{
if (asCtx.ValidateFixedBuffer(args.Offset, size))
{
args.Offset = asCtx.Vmm.Map(pa, args.Offset, size);
}
else
{
string msg = string.Format(mapErrorMsg, args.Offset, size);
Logger.PrintWarning(LogClass.ServiceNv, msg);
result = NvResult.InvalidInput;
}
}
else
{
args.Offset = asCtx.Vmm.Map(pa, size);
}
if (args.Offset < 0)
{
args.Offset = 0;
Logger.PrintWarning(LogClass.ServiceNv, $"Failed to map size 0x{size:x16}!");
result = NvResult.InvalidInput;
}
else
{
asCtx.AddMap(args.Offset, size, pa, vaAllocated);
}
}
MemoryHelper.Write(context.Memory, outputPosition, args);
return(result);
}