Here is a list of all documented files with brief descriptions:

xiicps.c
xiicps.h
xiicps_g.c
xiicps_hw.c
xiicps_hw.h
xiicps_intr.c
xiicps_master.c
xiicps_options.c
xiicps_selftest.c
xiicps_sinit.c
xiicps_slave.c