IMASK_LOCAL
HWRITE4(sc, IMASK_LOCAL, 0);
HWRITE4(sc, IMASK_LOCAL, IMASK_INT_MSI);
mask = HREAD4(sc, IMASK_LOCAL);
HWRITE4(sc, IMASK_LOCAL, mask);
mask = HREAD4(sc, IMASK_LOCAL);
HWRITE4(sc, IMASK_LOCAL, mask);
mask = HREAD4(sc, IMASK_LOCAL);
HWRITE4(sc, IMASK_LOCAL, mask);
mask = HREAD4(sc, IMASK_LOCAL);
HWRITE4(sc, IMASK_LOCAL, mask);