IOExternalMethodArguments.h

struct IOExternalMethodArguments
{
  uint32_t version;
  uint32_t selector;
  uint64_t asyncWakePort;
  uint64_t asyncReference;
  uint32_t asyncReferenceCount;
  const uint64_t *scalarInput;
  uint32_t scalarInputCount;
  const void *structureInput;
  uint32_t structureInputSize;
  uint64_t structureInputDescriptor;
  uint64_t *scalarOutput;
  uint32_t scalarOutputCount;
  void *structureOutput;
  uint32_t structureOutputSize;
  uint64_t structureOutputDescriptor;
  uint32_t structureOutputDescriptorSize;
  uint32_t __reservedA;
  uint64_t structureVariableOutputData;
  uint32_t __reserved[30];
};