MLXBF_GIGE_RX_WQE_PI
writeq(priv->rx_q_entries, priv->base + MLXBF_GIGE_RX_WQE_PI);
rx_pi = readq(priv->base + MLXBF_GIGE_RX_WQE_PI);
writeq(rx_pi, priv->base + MLXBF_GIGE_RX_WQE_PI);