qv_reg_rd
sc->sc_fbphys = QMEMBASE + ((qv_reg_rd(sc, QV_CSR) & QV_CSR_BANK) << 7);
qv_reg_wr(sc, QV_CSR, qv_reg_rd(sc, QV_CSR) | (1 << 2) | (1 << 3));
qv_reg_rd(sc, QV_CSR) | (1 << 2));
qv_reg_rd(sc, QV_CSR) & ~(1 << 2));
*(u_int *)data = (qv_reg_rd(sc, QV_CSR) & (1 << 2))