OPAL_GET_XIVE
=============
::

   #define OPAL_GET_XIVE				20

**WARNING:** following documentation is from old sources, and is possibly
not representative of OPALv3 as implemented by skiboot. This should be
used as a starting point for full documentation.

The host calls this function to return the POWER XIVE server and priority
values currently set in a PHB XIVE.

``phb_id``
  The ``phb_id`` parameter is the value from the PHB node ``ibm,opal-phbid``
  property.

``xive_number``
  The ``xive_number`` is the index of an XIVE that corresponds to a particular
  interrupt.

``server_number``
  the ``server_number`` returns the server (processor) that is set in this XIVE

``priority``
  the ``priority`` returns the interrupt priority value that is set in this XIVE


This call returns the server and priority numbers from within the XIVE
specified by the XIVE_number.