The functions for iterating through topologies begin with tpm_iter.
Many have counterparts in the topology information functions (tpm_info[xx]). The iterating functions can query any topology, loaded or unloaded, open or closed. The information functions query only topologies that are open.
tpm_iterdesc
Gets a topology description.
tpm_itername
Gets a topology name.
tpm_iternext
Moves the iterator to the next topology.
tpm_iterstart
Creates a topology iterator.
tpm_iterstop
Frees a topology iterator.
tpm_itertype
Gets a topology type.
tpm_iterversion
Gets the version of a topology.