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PIG: There is a QPIG package under QSD. Note that PIG datagrams have no substructure. QPIG defines updateAtDatagram and appStateGet methods analogous to methods in e.g. DfiLpa-Parser. Making a parallel structure appears to be conceptually trivial, except for deciding what to do with the context (state) info. UPDATE: This is done (modulo polishing) as of 1 Feb.
LRA: There is a QLRA package; it provides procDgm to process "a complete datagram of LRA data" and call routines "when a complete set of register values has been assembled" or for an ESR or statistics datagram.
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EMP: The QEMP package has QASC, which defines interfaces to the ACD software counters.
LATC: See the QCFG (src only) and maybe RIM packages.
NOTE FOR PHILIP: The following is a page in ISOC where a discussion/documentation of this topic is being done.
Completing and Extending DFI