idecr
pcireg_t interface, idecr;
idecr = pci_conf_read(sc->sc_pc, sc->sc_tag, SYMPH_IDECSR);
if ((channel == 0 && (idecr & IDECR_P0EN) == 0) ||
(channel == 1 && (idecr & IDECR_P1EN) == 0)) {