RMON_READ
(mac)->stats.name += (u64)RMON_READ(mac, A_XGM_STAT_##reg)
(mac)->stats.name += RMON_READ(mac, A_XGM_STAT_##reg_lo) + \
((u64)RMON_READ(mac, A_XGM_STAT_##reg_hi) << 32)
v = RMON_READ(mac, A_XGM_RX_MAX_PKT_SIZE_ERR_CNT);