QVA_QVCSR
bus_space_write_2(ua->ua_iot, ua->ua_ioh, QVA_QVCSR,
bus_space_read_2(ua->ua_iot, ua->ua_ioh, QVA_QVCSR) | (1 << 6));
#define QVA_QVIC (QVA_QVCSR + 12) /* offset to VCB01 IC */