TPM_STS_CMD_READY
bus_space_write_1(sc->sc_bt, sc->sc_bh, TPM_STS, TPM_STS_CMD_READY);
if (sc->sc_status & TPM_STS_CMD_READY)
bus_space_write_1(sc->sc_bt, sc->sc_bh, TPM_STS, TPM_STS_CMD_READY);
rv = tpm_waitfor(sc, TPM_STS_CMD_READY, TPM_READY_TMO, sc->sc_intf->write);
TPM_STS_CMD_READY);
err ? TPM_STS_CMD_READY : TPM_STS_GO);