AQ_SMB_BUS_REG
(AQ_READ_REG(sc, AQ_SMB_BUS_REG) & AQ_SMB_BUS_XFER_COMPLETE) != 0,
if ((AQ_READ_REG(sc, AQ_SMB_BUS_REG) & AQ_SMB_BUS_RX_ACK) != ack)
WAIT_FOR((AQ_READ_REG(sc, AQ_SMB_BUS_REG) & AQ_SMB_BUS_BUSY) == 0,
if ((AQ_READ_REG(sc, AQ_SMB_BUS_REG) & AQ_SMB_BUS_REPEAT_DETECT) == 0) {