51 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_receive()  local
52 	struct net_device *netdev = qca->net_dev;  in qca_tty_receive()
56 	if (!qca->rx_skb) {  in qca_tty_receive()
57 		qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
60 		if (!qca->rx_skb) {  in qca_tty_receive()
70 		retcode = qcafrm_fsm_decode(&qca->frm_handle,  in qca_tty_receive()
71 					    qca->rx_skb->data,  in qca_tty_receive()
72 					    skb_tailroom(qca->rx_skb),  in qca_tty_receive()
92 			skb_put(qca->rx_skb, retcode);  in qca_tty_receive()
93 			qca->rx_skb->protocol = eth_type_trans(  in qca_tty_receive()
94 						qca->rx_skb, qca->rx_skb->dev);  in qca_tty_receive()
95 			skb_checksum_none_assert(qca->rx_skb);  in qca_tty_receive()
96 			netif_rx(qca->rx_skb);  in qca_tty_receive()
97 			qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
100 			if (!qca->rx_skb) {  in qca_tty_receive()
114 	struct qcauart *qca = container_of(work, struct qcauart, tx_work);  in qcauart_transmit()  local
115 	struct net_device_stats *n_stats = &qca->net_dev->stats;  in qcauart_transmit()
118 	spin_lock_bh(&qca->lock);  in qcauart_transmit()
121 	if (!netif_running(qca->net_dev)) {  in qcauart_transmit()
122 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
126 	if (qca->tx_left <= 0)  {  in qcauart_transmit()
131 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
132 		netif_wake_queue(qca->net_dev);  in qcauart_transmit()
136 	written = serdev_device_write_buf(qca->serdev, qca->tx_head,  in qcauart_transmit()
137 					  qca->tx_left);  in qcauart_transmit()
139 		qca->tx_left -= written;  in qcauart_transmit()
140 		qca->tx_head += written;  in qcauart_transmit()
142 	spin_unlock_bh(&qca->lock);  in qcauart_transmit()
150 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_wakeup()  local
152 	schedule_work(&qca->tx_work);  in qca_tty_wakeup()
162 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_open()  local
164 	netif_start_queue(qca->net_dev);  in qcauart_netdev_open()
171 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_close()  local
174 	flush_work(&qca->tx_work);  in qcauart_netdev_close()
176 	spin_lock_bh(&qca->lock);  in qcauart_netdev_close()
177 	qca->tx_left = 0;  in qcauart_netdev_close()
178 	spin_unlock_bh(&qca->lock);  in qcauart_netdev_close()
187 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_xmit()  local
192 	spin_lock(&qca->lock);  in qcauart_netdev_xmit()
194 	WARN_ON(qca->tx_left);  in qcauart_netdev_xmit()
197 		spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
198 		netdev_warn(qca->net_dev, "xmit: iface is down\n");  in qcauart_netdev_xmit()
202 	pos = qca->tx_buffer;  in qcauart_netdev_xmit()
219 	netif_stop_queue(qca->net_dev);  in qcauart_netdev_xmit()
221 	written = serdev_device_write_buf(qca->serdev, qca->tx_buffer,  in qcauart_netdev_xmit()
222 					  pos - qca->tx_buffer);  in qcauart_netdev_xmit()
224 		qca->tx_left = (pos - qca->tx_buffer) - written;  in qcauart_netdev_xmit()
225 		qca->tx_head = qca->tx_buffer + written;  in qcauart_netdev_xmit()
228 	spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
238 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_tx_timeout()  local
240 	netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n",  in qcauart_netdev_tx_timeout()
248 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_init()  local
256 	qca->tx_buffer = devm_kmalloc(&qca->serdev->dev, len, GFP_KERNEL);  in qcauart_netdev_init()
257 	if (!qca->tx_buffer)  in qcauart_netdev_init()
260 	qca->rx_skb = netdev_alloc_skb_ip_align(qca->net_dev,  in qcauart_netdev_init()
261 						qca->net_dev->mtu +  in qcauart_netdev_init()
263 	if (!qca->rx_skb)  in qcauart_netdev_init()
271 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_uninit()  local
273 	dev_kfree_skb(qca->rx_skb);  in qcauart_netdev_uninit()
310 	struct qcauart *qca;  in qca_uart_probe()  local
320 	qca = netdev_priv(qcauart_dev);  in qca_uart_probe()
321 	if (!qca) {  in qca_uart_probe()
326 	qca->net_dev = qcauart_dev;  in qca_uart_probe()
327 	qca->serdev = serdev;  in qca_uart_probe()
328 	qcafrm_fsm_init_uart(&qca->frm_handle);  in qca_uart_probe()
330 	spin_lock_init(&qca->lock);  in qca_uart_probe()
331 	INIT_WORK(&qca->tx_work, qcauart_transmit);  in qca_uart_probe()
335 	ret = of_get_ethdev_address(serdev->dev.of_node, qca->net_dev);  in qca_uart_probe()
337 		eth_hw_addr_random(qca->net_dev);  in qca_uart_probe()
339 			 qca->net_dev->dev_addr);  in qca_uart_probe()
342 	netif_carrier_on(qca->net_dev);  in qca_uart_probe()
343 	serdev_device_set_drvdata(serdev, qca);  in qca_uart_probe()
363 		cancel_work_sync(&qca->tx_work);  in qca_uart_probe()
376 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_uart_remove()  local
378 	unregister_netdev(qca->net_dev);  in qca_uart_remove()
382 	cancel_work_sync(&qca->tx_work);  in qca_uart_remove()
384 	free_netdev(qca->net_dev);  in qca_uart_remove()