ntb_peer_port_number
int ntb_peer_port_number(device_t ntb, int pidx);
DEVMETHOD(ntb_peer_port_number, amd_ntb_peer_port_number),
DEVMETHOD(ntb_peer_port_number, intel_ntb_peer_port_number),
DEVMETHOD(ntb_peer_port_number, ntb_plx_peer_port_number),
peer_port = ntb_peer_port_number(tc->dev, pidx);
ntb_peer_port_number(inmw->tc->dev, inmw->pidx), inmw->pidx);