TW_MAX_UNITS
host->max_id = TW_MAX_UNITS;
host->max_id = TW_MAX_UNITS;
param->parameter_size_bytes = TW_MAX_UNITS;
param->parameter_size_bytes = TW_MAX_UNITS;
host->max_id = TW_MAX_UNITS;
int is_unit_present[TW_MAX_UNITS];