[ixp1200] HashSv functions? (accessing the hash units from the SA)

I'm in need of a way to initialize a hashtable for the microengines later use. There appears to be no direct way to access the hash unit on the FBI, but the Microcode Software Reference Manual lists a family of functions called HashSv_* (HashSv_Init, etc). The manual lists the prototypes as being in hashsv.h. Yet I can't find hashsv.h anywhere. Is this another documented, but nonexistent piece of functionality? And if this is the case, how would people suggest initializing a hash table on the SA for use by the micros? The values to initialize the table will be coming from a configuration file, so hard-coding the table in the ME's doesn't work for me. Thanks all, Cyrus