kcs_wait
static int kcs_wait(struct ipmi_softc *, uint8_t, uint8_t, const char *);
return kcs_wait(sc, KCS_IBF, 0, "write_cmd");
return kcs_wait(sc, KCS_IBF, 0, "write_data");
sts = kcs_wait(sc, KCS_IBF | KCS_OBF, KCS_OBF, __func__);
sts = kcs_wait(sc, KCS_IBF, 0, __func__);