+ spin_unlock_bh(&mp->mib_counters_lock);
+
+ mod_timer(&mp->mib_counters_timer, jiffies + 30 * HZ);
+}
+
+static void mib_counters_timer_wrapper(unsigned long _mp)
+{
+ struct mv643xx_eth_private *mp = (void *)_mp;
+
+ mib_counters_update(mp);
+}
+
+
+/* interrupt coalescing *****************************************************/
+/*
+ * Hardware coalescing parameters are set in units of 64 t_clk
+ * cycles. I.e.:
+ *
+ * coal_delay_in_usec = 64000000 * register_value / t_clk_rate
+ *
+ * register_value = coal_delay_in_usec * t_clk_rate / 64000000
+ *
+ * In the ->set*() methods, we round the computed register value
+ * to the nearest integer.
+ */
+static unsigned int get_rx_coal(struct mv643xx_eth_private *mp)
+{
+ u32 val = rdlp(mp, SDMA_CONFIG);
+ u64 temp;
+
+ if (mp->shared->extended_rx_coal_limit)
+ temp = ((val & 0x02000000) >> 10) | ((val & 0x003fff80) >> 7);
+ else
+ temp = (val & 0x003fff00) >> 8;
+
+ temp *= 64000000;
+ do_div(temp, mp->shared->t_clk);
+
+ return (unsigned int)temp;
+}
+
+static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
+{
+ u64 temp;
+ u32 val;
+
+ temp = (u64)usec * mp->shared->t_clk;
+ temp += 31999999;
+ do_div(temp, 64000000);
+
+ val = rdlp(mp, SDMA_CONFIG);
+ if (mp->shared->extended_rx_coal_limit) {
+ if (temp > 0xffff)
+ temp = 0xffff;
+ val &= ~0x023fff80;
+ val |= (temp & 0x8000) << 10;
+ val |= (temp & 0x7fff) << 7;
+ } else {
+ if (temp > 0x3fff)
+ temp = 0x3fff;
+ val &= ~0x003fff00;
+ val |= (temp & 0x3fff) << 8;
+ }
+ wrlp(mp, SDMA_CONFIG, val);
+}
+
+static unsigned int get_tx_coal(struct mv643xx_eth_private *mp)
+{
+ u64 temp;
+
+ temp = (rdlp(mp, TX_FIFO_URGENT_THRESHOLD) & 0x3fff0) >> 4;
+ temp *= 64000000;
+ do_div(temp, mp->shared->t_clk);
+
+ return (unsigned int)temp;
+}
+
+static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int usec)
+{
+ u64 temp;
+
+ temp = (u64)usec * mp->shared->t_clk;
+ temp += 31999999;
+ do_div(temp, 64000000);
+
+ if (temp > 0x3fff)
+ temp = 0x3fff;
+
+ wrlp(mp, TX_FIFO_URGENT_THRESHOLD, temp << 4);