26 static void arc_emac_restart(struct net_device *ndev);
41  * @ndev:	Pointer to the net_device structure.
46 static void arc_emac_adjust_link(struct net_device *ndev)  in arc_emac_adjust_link()  argument
48 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_adjust_link()
49 	struct phy_device *phy_dev = ndev->phydev;  in arc_emac_adjust_link()
83  * @ndev:	Pointer to net_device structure.
89 static void arc_emac_get_drvinfo(struct net_device *ndev,  in arc_emac_get_drvinfo()  argument
92 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_get_drvinfo()
108  * @ndev:	Pointer to the network device.
110 static void arc_emac_tx_clean(struct net_device *ndev)  in arc_emac_tx_clean()  argument
112 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_tx_clean()
113 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_tx_clean()
114 	struct device *dev = ndev->dev.parent;  in arc_emac_tx_clean()
162 	if (netif_queue_stopped(ndev) && arc_emac_tx_avail(priv))  in arc_emac_tx_clean()
163 		netif_wake_queue(ndev);  in arc_emac_tx_clean()
168  * @ndev:	Pointer to the network device.
175 static int arc_emac_rx(struct net_device *ndev, int budget)  in arc_emac_rx()  argument
177 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_rx()
178 	struct device *dev = ndev->dev.parent;  in arc_emac_rx()
183 		struct net_device_stats *stats = &ndev->stats;  in arc_emac_rx()
204 				netdev_err(ndev, "incomplete packet received\n");  in arc_emac_rx()
217 		skb = netdev_alloc_skb_ip_align(ndev, EMAC_BUFFER_SIZE);  in arc_emac_rx()
220 				netdev_err(ndev, "cannot allocate skb\n");  in arc_emac_rx()
232 				netdev_err(ndev, "cannot map dma buffer\n");  in arc_emac_rx()
249 		rx_buff->skb->dev = ndev;  in arc_emac_rx()
250 		rx_buff->skb->protocol = eth_type_trans(rx_buff->skb, ndev);  in arc_emac_rx()
272  * @ndev:	Pointer to the net_device structure.
274 static void arc_emac_rx_miss_handle(struct net_device *ndev)  in arc_emac_rx_miss_handle()  argument
276 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_rx_miss_handle()
277 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_rx_miss_handle()
290  * @ndev:	Pointer to the net_device structure.
299 static void arc_emac_rx_stall_check(struct net_device *ndev,  in arc_emac_rx_stall_check()  argument
302 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_rx_stall_check()
311 			arc_emac_restart(ndev);  in arc_emac_rx_stall_check()
326 	struct net_device *ndev = napi->dev;  in arc_emac_poll()  local
327 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_poll()
330 	arc_emac_tx_clean(ndev);  in arc_emac_poll()
331 	arc_emac_rx_miss_handle(ndev);  in arc_emac_poll()
333 	work_done = arc_emac_rx(ndev, budget);  in arc_emac_poll()
339 	arc_emac_rx_stall_check(ndev, budget, work_done);  in arc_emac_poll()
356 	struct net_device *ndev = dev_instance;  in arc_emac_intr()  local
357 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_intr()
358 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_intr()
416  * @ndev:	Pointer to the network device.
424 static int arc_emac_open(struct net_device *ndev)  in arc_emac_open()  argument
426 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_open()
427 	struct phy_device *phy_dev = ndev->phydev;  in arc_emac_open()
428 	struct device *dev = ndev->dev.parent;  in arc_emac_open()
446 		rx_buff->skb = netdev_alloc_skb_ip_align(ndev,  in arc_emac_open()
454 			netdev_err(ndev, "cannot dma map\n");  in arc_emac_open()
500 	phy_start(ndev->phydev);  in arc_emac_open()
502 	netif_start_queue(ndev);  in arc_emac_open()
509  * @ndev:	Pointer to the network device.
514 static void arc_emac_set_rx_mode(struct net_device *ndev)  in arc_emac_set_rx_mode()  argument
516 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_set_rx_mode()
518 	if (ndev->flags & IFF_PROMISC) {  in arc_emac_set_rx_mode()
523 		if (ndev->flags & IFF_ALLMULTI) {  in arc_emac_set_rx_mode()
526 		} else if (ndev->flags & IFF_MULTICAST) {  in arc_emac_set_rx_mode()
531 			netdev_for_each_mc_addr(ha, ndev) {  in arc_emac_set_rx_mode()
547  * @ndev:	Pointer to the network device.
551 static void arc_free_tx_queue(struct net_device *ndev)  in arc_free_tx_queue()  argument
553 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_free_tx_queue()
554 	struct device *dev = ndev->dev.parent;  in arc_free_tx_queue()
579  * @ndev:	Pointer to the network device.
583 static void arc_free_rx_queue(struct net_device *ndev)  in arc_free_rx_queue()  argument
585 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_free_rx_queue()
586 	struct device *dev = ndev->dev.parent;  in arc_free_rx_queue()
611  * @ndev:	Pointer to the network device.
617 static int arc_emac_stop(struct net_device *ndev)  in arc_emac_stop()  argument
619 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_stop()
622 	netif_stop_queue(ndev);  in arc_emac_stop()
624 	phy_stop(ndev->phydev);  in arc_emac_stop()
633 	arc_free_tx_queue(ndev);  in arc_emac_stop()
634 	arc_free_rx_queue(ndev);  in arc_emac_stop()
641  * @ndev:	Pointer to net_device structure.
646 static struct net_device_stats *arc_emac_stats(struct net_device *ndev)  in arc_emac_stats()  argument
648 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_stats()
649 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_stats()
674  * @ndev:	Pointer to net_device structure.
681 static netdev_tx_t arc_emac_tx(struct sk_buff *skb, struct net_device *ndev)  in arc_emac_tx()  argument
683 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_tx()
685 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_tx()
687 	struct device *dev = ndev->dev.parent;  in arc_emac_tx()
696 		netif_stop_queue(ndev);  in arc_emac_tx()
697 		netdev_err(ndev, "BUG! Tx Ring full when queue awake!\n");  in arc_emac_tx()
736 		netif_stop_queue(ndev);  in arc_emac_tx()
740 			netif_start_queue(ndev);  in arc_emac_tx()
748 static void arc_emac_set_address_internal(struct net_device *ndev)  in arc_emac_set_address_internal()  argument
750 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_set_address_internal()
753 	addr_low = le32_to_cpu(*(__le32 *)&ndev->dev_addr[0]);  in arc_emac_set_address_internal()
754 	addr_hi = le16_to_cpu(*(__le16 *)&ndev->dev_addr[4]);  in arc_emac_set_address_internal()
762  * @ndev:	Pointer to net_device structure.
771 static int arc_emac_set_address(struct net_device *ndev, void *p)  in arc_emac_set_address()  argument
775 	if (netif_running(ndev))  in arc_emac_set_address()
781 	eth_hw_addr_set(ndev, addr->sa_data);  in arc_emac_set_address()
783 	arc_emac_set_address_internal(ndev);  in arc_emac_set_address()
790  * @ndev:	Pointer to net_device structure.
795 static void arc_emac_restart(struct net_device *ndev)  in arc_emac_restart()  argument
797 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_restart()
798 	struct net_device_stats *stats = &ndev->stats;  in arc_emac_restart()
802 		netdev_warn(ndev, "restarting stalled EMAC\n");  in arc_emac_restart()
804 	netif_stop_queue(ndev);  in arc_emac_restart()
813 	arc_free_tx_queue(ndev);  in arc_emac_restart()
842 	netif_start_queue(ndev);  in arc_emac_restart()
858 int arc_emac_probe(struct net_device *ndev, int interface)  in arc_emac_probe()  argument
860 	struct device *dev = ndev->dev.parent;  in arc_emac_probe()
891 	ndev->netdev_ops = &arc_emac_netdev_ops;  in arc_emac_probe()
892 	ndev->ethtool_ops = &arc_emac_ethtool_ops;  in arc_emac_probe()
893 	ndev->watchdog_timeo = TX_TIMEOUT;  in arc_emac_probe()
895 	priv = netdev_priv(ndev);  in arc_emac_probe()
937 	ndev->irq = irq;  in arc_emac_probe()
938 	dev_info(dev, "IRQ is %d\n", ndev->irq);  in arc_emac_probe()
941 	err = devm_request_irq(dev, ndev->irq, arc_emac_intr, 0,  in arc_emac_probe()
942 			       ndev->name, ndev);  in arc_emac_probe()
949 	err = of_get_ethdev_address(dev->of_node, ndev);  in arc_emac_probe()
951 		eth_hw_addr_random(ndev);  in arc_emac_probe()
953 	arc_emac_set_address_internal(ndev);  in arc_emac_probe()
954 	dev_info(dev, "MAC address is now %pM\n", ndev->dev_addr);  in arc_emac_probe()
978 	phydev = of_phy_connect(ndev, phy_node, arc_emac_adjust_link, 0,  in arc_emac_probe()
989 	netif_napi_add_weight(ndev, &priv->napi, arc_emac_poll,  in arc_emac_probe()
992 	err = register_netdev(ndev);  in arc_emac_probe()
1016 void arc_emac_remove(struct net_device *ndev)  in arc_emac_remove()  argument
1018 	struct arc_emac_priv *priv = netdev_priv(ndev);  in arc_emac_remove()
1020 	phy_disconnect(ndev->phydev);  in arc_emac_remove()
1022 	unregister_netdev(ndev);  in arc_emac_remove()