65 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_receive()  local
66 	struct net_device *netdev = qca->net_dev;  in qca_tty_receive()
70 	if (!qca->rx_skb) {  in qca_tty_receive()
71 		qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
74 		if (!qca->rx_skb) {  in qca_tty_receive()
84 		retcode = qcafrm_fsm_decode(&qca->frm_handle,  in qca_tty_receive()
85 					    qca->rx_skb->data,  in qca_tty_receive()
86 					    skb_tailroom(qca->rx_skb),  in qca_tty_receive()
106 			skb_put(qca->rx_skb, retcode);  in qca_tty_receive()
107 			qca->rx_skb->protocol = eth_type_trans(  in qca_tty_receive()
108 						qca->rx_skb, qca->rx_skb->dev);  in qca_tty_receive()
109 			skb_checksum_none_assert(qca->rx_skb);  in qca_tty_receive()
110 			netif_rx(qca->rx_skb);  in qca_tty_receive()
111 			qca->rx_skb = netdev_alloc_skb_ip_align(netdev,  in qca_tty_receive()
114 			if (!qca->rx_skb) {  in qca_tty_receive()
128 	struct qcauart *qca = container_of(work, struct qcauart, tx_work);  in qcauart_transmit()  local
129 	struct net_device_stats *n_stats = &qca->net_dev->stats;  in qcauart_transmit()
132 	spin_lock_bh(&qca->lock);  in qcauart_transmit()
135 	if (!netif_running(qca->net_dev)) {  in qcauart_transmit()
136 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
140 	if (qca->tx_left <= 0)  {  in qcauart_transmit()
145 		spin_unlock_bh(&qca->lock);  in qcauart_transmit()
146 		netif_wake_queue(qca->net_dev);  in qcauart_transmit()
150 	written = serdev_device_write_buf(qca->serdev, qca->tx_head,  in qcauart_transmit()
151 					  qca->tx_left);  in qcauart_transmit()
153 		qca->tx_left -= written;  in qcauart_transmit()
154 		qca->tx_head += written;  in qcauart_transmit()
156 	spin_unlock_bh(&qca->lock);  in qcauart_transmit()
164 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_tty_wakeup()  local
166 	schedule_work(&qca->tx_work);  in qca_tty_wakeup()
176 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_open()  local
178 	netif_start_queue(qca->net_dev);  in qcauart_netdev_open()
185 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_close()  local
188 	flush_work(&qca->tx_work);  in qcauart_netdev_close()
190 	spin_lock_bh(&qca->lock);  in qcauart_netdev_close()
191 	qca->tx_left = 0;  in qcauart_netdev_close()
192 	spin_unlock_bh(&qca->lock);  in qcauart_netdev_close()
201 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_xmit()  local
206 	spin_lock(&qca->lock);  in qcauart_netdev_xmit()
208 	WARN_ON(qca->tx_left);  in qcauart_netdev_xmit()
211 		spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
212 		netdev_warn(qca->net_dev, "xmit: iface is down\n");  in qcauart_netdev_xmit()
216 	pos = qca->tx_buffer;  in qcauart_netdev_xmit()
233 	netif_stop_queue(qca->net_dev);  in qcauart_netdev_xmit()
235 	written = serdev_device_write_buf(qca->serdev, qca->tx_buffer,  in qcauart_netdev_xmit()
236 					  pos - qca->tx_buffer);  in qcauart_netdev_xmit()
238 		qca->tx_left = (pos - qca->tx_buffer) - written;  in qcauart_netdev_xmit()
239 		qca->tx_head = qca->tx_buffer + written;  in qcauart_netdev_xmit()
242 	spin_unlock(&qca->lock);  in qcauart_netdev_xmit()
252 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_tx_timeout()  local
254 	netdev_info(qca->net_dev, "Transmit timeout at %ld, latency %ld\n",  in qcauart_netdev_tx_timeout()
262 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_init()  local
270 	qca->tx_buffer = devm_kmalloc(&qca->serdev->dev, len, GFP_KERNEL);  in qcauart_netdev_init()
271 	if (!qca->tx_buffer)  in qcauart_netdev_init()
274 	qca->rx_skb = netdev_alloc_skb_ip_align(qca->net_dev,  in qcauart_netdev_init()
275 						qca->net_dev->mtu +  in qcauart_netdev_init()
277 	if (!qca->rx_skb)  in qcauart_netdev_init()
285 	struct qcauart *qca = netdev_priv(dev);  in qcauart_netdev_uninit()  local
287 	dev_kfree_skb(qca->rx_skb);  in qcauart_netdev_uninit()
315 	 .compatible = "qca,qca7000",
324 	struct qcauart *qca;  in qca_uart_probe()  local
334 	qca = netdev_priv(qcauart_dev);  in qca_uart_probe()
335 	if (!qca) {  in qca_uart_probe()
340 	qca->net_dev = qcauart_dev;  in qca_uart_probe()
341 	qca->serdev = serdev;  in qca_uart_probe()
342 	qcafrm_fsm_init_uart(&qca->frm_handle);  in qca_uart_probe()
344 	spin_lock_init(&qca->lock);  in qca_uart_probe()
345 	INIT_WORK(&qca->tx_work, qcauart_transmit);  in qca_uart_probe()
349 	ret = of_get_ethdev_address(serdev->dev.of_node, qca->net_dev);  in qca_uart_probe()
351 		eth_hw_addr_random(qca->net_dev);  in qca_uart_probe()
353 			 qca->net_dev->dev_addr);  in qca_uart_probe()
356 	netif_carrier_on(qca->net_dev);  in qca_uart_probe()
357 	serdev_device_set_drvdata(serdev, qca);  in qca_uart_probe()
377 		cancel_work_sync(&qca->tx_work);  in qca_uart_probe()
390 	struct qcauart *qca = serdev_device_get_drvdata(serdev);  in qca_uart_remove()  local
392 	unregister_netdev(qca->net_dev);  in qca_uart_remove()
396 	cancel_work_sync(&qca->tx_work);  in qca_uart_remove()
398 	free_netdev(qca->net_dev);  in qca_uart_remove()