MVNETA_TQC
reg = MVNETA_READ(sc, MVNETA_TQC) & MVNETA_TQC_EN_MASK;
MVNETA_WRITE(sc, MVNETA_TQC, reg);
reg = MVNETA_READ(sc, MVNETA_TQC);
MVNETA_WRITE(sc, MVNETA_TQC, MVNETA_TQC_ENQ(q));