OCXL_DVSEC_ACTAG_MASK
val = actag_count & OCXL_DVSEC_ACTAG_MASK;
val = actag_base & OCXL_DVSEC_ACTAG_MASK;
val = (tag_first & OCXL_DVSEC_ACTAG_MASK) << 16;
val |= tag_count & OCXL_DVSEC_ACTAG_MASK;