[PATCH net-next v2 0/2] net: mvneta: implement basic MQPrio support

@@ -3428,7 +3428,9 @@ static int mvneta_txq_sw_init(struct mvneta_port *pp,
 		return -ENOMEM;
 
 	/* Setup XPS mapping */
-	if (txq_number > 1)
+	if (pp->neta_armada3700)
+		cpu = 0;
+	else if (txq_number > 1)
 		cpu = txq->id % num_present_cpus();
 	else
 		cpu = pp->rxq_def % num_present_cpus();

@@ -4206,6 +4208,11 @@ static int mvneta_cpu_online(unsigned int cpu, struct hlist_node *node)
 						  node_online);
 	struct mvneta_pcpu_port *port = per_cpu_ptr(pp->ports, cpu);
 
+	/* Armada 3700's per-cpu interrupt for mvneta is broken, all interrupts
+	 * are routed to CPU 0, so we don't need all the cpu-hotplug support
+	 */
+	if (pp->neta_armada3700)
+		return 0;
 
 	spin_lock(&pp->lock);
 	/*

@@ -102,6 +102,8 @@
 #define      MVNETA_TX_NO_DATA_SWAP              BIT(5)
 #define      MVNETA_DESC_SWAP                    BIT(6)
 #define      MVNETA_TX_BRST_SZ_MASK(burst)       ((burst) << 22)
+#define	MVNETA_VLAN_PRIO_TO_RXQ			 0x2440
+#define      MVNETA_VLAN_PRIO_RXQ_MAP(prio, rxq) ((rxq) << ((prio) * 3))
 #define MVNETA_PORT_STATUS                       0x2444
 #define      MVNETA_TX_IN_PRGRS                  BIT(1)
 #define      MVNETA_TX_FIFO_EMPTY                BIT(8)

@@ -490,6 +492,7 @@ struct mvneta_port {
 	u8 mcast_count[256];
 	u16 tx_ring_size;
 	u16 rx_ring_size;
+	u8 prio_tc_map[8];
 
 	phy_interface_t phy_interface;
 	struct device_node *dn;

@@ -4922,6 +4925,63 @@ static int mvneta_ethtool_set_eee(struct net_device *dev,
 	return phylink_ethtool_set_eee(pp->phylink, eee);
 }
 
+static void mvneta_clear_rx_prio_map(struct mvneta_port *pp)
+{
+	mvreg_write(pp, MVNETA_VLAN_PRIO_TO_RXQ, 0);
+}
+
+static void mvneta_setup_rx_prio_map(struct mvneta_port *pp)
+{
+	u32 val = 0;
+	int i;
+
+	for (i = 0; i < rxq_number; i++)
+		val |= MVNETA_VLAN_PRIO_RXQ_MAP(i, pp->prio_tc_map[i]);
+
+	mvreg_write(pp, MVNETA_VLAN_PRIO_TO_RXQ, val);
+}
+
+static int mvneta_setup_mqprio(struct net_device *dev,
+			       struct tc_mqprio_qopt *qopt)
+{
+	struct mvneta_port *pp = netdev_priv(dev);
+	u8 num_tc;
+	int i;
+
+	qopt->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
+	num_tc = qopt->num_tc;
+
+	if (num_tc > rxq_number)
+		return -EINVAL;
+
+	if (!num_tc) {
+		mvneta_clear_rx_prio_map(pp);
+		netdev_reset_tc(dev);
+		return 0;
+	}
+
+	memcpy(pp->prio_tc_map, qopt->prio_tc_map, sizeof(pp->prio_tc_map));
+
+	mvneta_setup_rx_prio_map(pp);
+
+	netdev_set_num_tc(dev, qopt->num_tc);
+	for (i = 0; i < qopt->num_tc; i++)
+		netdev_set_tc_queue(dev, i, qopt->count[i], qopt->offset[i]);
+
+	return 0;
+}
+
+static int mvneta_setup_tc(struct net_device *dev, enum tc_setup_type type,
+			   void *type_data)
+{
+	switch (type) {
+	case TC_SETUP_QDISC_MQPRIO:
+		return mvneta_setup_mqprio(dev, type_data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
 static const struct net_device_ops mvneta_netdev_ops = {
 	.ndo_open            = mvneta_open,
 	.ndo_stop            = mvneta_stop,

@@ -4934,6 +4994,7 @@ static const struct net_device_ops mvneta_netdev_ops = {
 	.ndo_do_ioctl        = mvneta_ioctl,
 	.ndo_bpf	     = mvneta_xdp,
 	.ndo_xdp_xmit        = mvneta_xdp_xmit,
+	.ndo_setup_tc	     = mvneta_setup_tc,
 };
 
 static const struct ethtool_ops mvneta_eth_tool_ops = {