QSFP_RW_BOUNDARY
if (((addr % QSFP_RW_BOUNDARY) + nwrite) > QSFP_RW_BOUNDARY)
nwrite = QSFP_RW_BOUNDARY - (addr % QSFP_RW_BOUNDARY);
if (((addr % QSFP_RW_BOUNDARY) + nread) > QSFP_RW_BOUNDARY)
nread = QSFP_RW_BOUNDARY - (addr % QSFP_RW_BOUNDARY);