PCIR_BDSM
bdsm = pci_host_read_config(passthru_get_sel(sc), PCIR_BDSM, 4);
pci_set_cfgdata32(pi, PCIR_BDSM,
error = set_pcir_handler(sc, PCIR_BDSM, 4, passthru_cfgread_emulate,