92 	u16  (*read) (struct w5300_priv *priv, u16 addr);
93 	void (*write)(struct w5300_priv *priv, u16 addr, u16 data);
116 static inline u16 w5300_read_direct(struct w5300_priv *priv, u16 addr)  in w5300_read_direct()  argument
118 	return ioread16(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));  in w5300_read_direct()
121 static inline void w5300_write_direct(struct w5300_priv *priv,  in w5300_write_direct()  argument
124 	iowrite16(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));  in w5300_write_direct()
138 static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr)  in w5300_read_indirect()  argument
143 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5300_read_indirect()
144 	w5300_write_direct(priv, W5300_IDM_AR, addr);  in w5300_read_indirect()
146 	data = w5300_read_direct(priv, W5300_IDM_DR);  in w5300_read_indirect()
147 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5300_read_indirect()
152 static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data)  in w5300_write_indirect()  argument
156 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5300_write_indirect()
157 	w5300_write_direct(priv, W5300_IDM_AR, addr);  in w5300_write_indirect()
159 	w5300_write_direct(priv, W5300_IDM_DR, data);  in w5300_write_indirect()
161 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5300_write_indirect()
173 #define w5300_read	priv->read
174 #define w5300_write	priv->write
177 static u32 w5300_read32(struct w5300_priv *priv, u16 addr)  in w5300_read32()  argument
180 	data  = w5300_read(priv, addr) << 16;  in w5300_read32()
181 	data |= w5300_read(priv, addr + 2);  in w5300_read32()
185 static void w5300_write32(struct w5300_priv *priv, u16 addr, u32 data)  in w5300_write32()  argument
187 	w5300_write(priv, addr, data >> 16);  in w5300_write32()
188 	w5300_write(priv, addr + 2, data);  in w5300_write32()
191 static int w5300_command(struct w5300_priv *priv, u16 cmd)  in w5300_command()  argument
195 	w5300_write(priv, W5300_S0_CR, cmd);  in w5300_command()
198 	while (w5300_read(priv, W5300_S0_CR) != 0) {  in w5300_command()
207 static void w5300_read_frame(struct w5300_priv *priv, u8 *buf, int len)  in w5300_read_frame()  argument
213 		fifo = w5300_read(priv, W5300_S0_RX_FIFO);  in w5300_read_frame()
217 	fifo = w5300_read(priv, W5300_S0_RX_FIFO);  in w5300_read_frame()
218 	fifo = w5300_read(priv, W5300_S0_RX_FIFO);  in w5300_read_frame()
221 static void w5300_write_frame(struct w5300_priv *priv, u8 *buf, int len)  in w5300_write_frame()  argument
229 		w5300_write(priv, W5300_S0_TX_FIFO, fifo);  in w5300_write_frame()
231 	w5300_write32(priv, W5300_S0_TX_WRSR, len);  in w5300_write_frame()
234 static void w5300_write_macaddr(struct w5300_priv *priv)  in w5300_write_macaddr()  argument
236 	struct net_device *ndev = priv->ndev;  in w5300_write_macaddr()
237 	w5300_write32(priv, W5300_SHARL,  in w5300_write_macaddr()
242 	w5300_write(priv, W5300_SHARH,  in w5300_write_macaddr()
248 static void w5300_hw_reset(struct w5300_priv *priv)  in w5300_hw_reset()  argument
250 	w5300_write_direct(priv, W5300_MR, MR_RST);  in w5300_hw_reset()
253 	w5300_write_direct(priv, W5300_MR, priv->indirect ?  in w5300_hw_reset()
257 	w5300_write(priv, W5300_IMR, 0);  in w5300_hw_reset()
258 	w5300_write_macaddr(priv);  in w5300_hw_reset()
263 	w5300_write32(priv, W5300_RMSRL, 64 << 24);  in w5300_hw_reset()
264 	w5300_write32(priv, W5300_RMSRH, 0);  in w5300_hw_reset()
265 	w5300_write32(priv, W5300_TMSRL, 64 << 24);  in w5300_hw_reset()
266 	w5300_write32(priv, W5300_TMSRH, 0);  in w5300_hw_reset()
267 	w5300_write(priv, W5300_MTYPE, 0x00ff);  in w5300_hw_reset()
271 static void w5300_hw_start(struct w5300_priv *priv)  in w5300_hw_start()  argument
273 	w5300_write(priv, W5300_S0_MR, priv->promisc ?  in w5300_hw_start()
276 	w5300_command(priv, S0_CR_OPEN);  in w5300_hw_start()
277 	w5300_write(priv, W5300_S0_IMR, S0_IR_RECV | S0_IR_SENDOK);  in w5300_hw_start()
278 	w5300_write(priv, W5300_IMR, IR_S0);  in w5300_hw_start()
282 static void w5300_hw_close(struct w5300_priv *priv)  in w5300_hw_close()  argument
284 	w5300_write(priv, W5300_IMR, 0);  in w5300_hw_close()
286 	w5300_command(priv, S0_CR_CLOSE);  in w5300_hw_close()
306 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_get_link()  local
308 	if (gpio_is_valid(priv->link_gpio))  in w5300_get_link()
309 		return !!gpio_get_value(priv->link_gpio);  in w5300_get_link()
316 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_get_msglevel()  local
318 	return priv->msg_enable;  in w5300_get_msglevel()
323 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_set_msglevel()  local
325 	priv->msg_enable = value;  in w5300_set_msglevel()
336 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_get_regs()  local
349 			data = w5300_read(priv, addr);  in w5300_get_regs()
359 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_tx_timeout()  local
362 	w5300_hw_reset(priv);  in w5300_tx_timeout()
363 	w5300_hw_start(priv);  in w5300_tx_timeout()
371 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_start_tx()  local
375 	w5300_write_frame(priv, skb->data, skb->len);  in w5300_start_tx()
380 	netif_dbg(priv, tx_queued, ndev, "tx queued\n");  in w5300_start_tx()
382 	w5300_command(priv, S0_CR_SEND);  in w5300_start_tx()
389 	struct w5300_priv *priv = container_of(napi, struct w5300_priv, napi);  in w5300_napi_poll()  local
390 	struct net_device *ndev = priv->ndev;  in w5300_napi_poll()
396 		u32 rx_fifo_len = w5300_read32(priv, W5300_S0_RX_RSR);  in w5300_napi_poll()
400 		rx_len = w5300_read(priv, W5300_S0_RX_FIFO);  in w5300_napi_poll()
406 				w5300_read(priv, W5300_S0_RX_FIFO);  in w5300_napi_poll()
412 		w5300_read_frame(priv, skb->data, rx_len);  in w5300_napi_poll()
422 		w5300_write(priv, W5300_IMR, IR_S0);  in w5300_napi_poll()
432 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_interrupt()  local
434 	int ir = w5300_read(priv, W5300_S0_IR);  in w5300_interrupt()
437 	w5300_write(priv, W5300_S0_IR, ir);  in w5300_interrupt()
441 		netif_dbg(priv, tx_done, ndev, "tx done\n");  in w5300_interrupt()
446 		if (napi_schedule_prep(&priv->napi)) {  in w5300_interrupt()
447 			w5300_write(priv, W5300_IMR, 0);  in w5300_interrupt()
449 			__napi_schedule(&priv->napi);  in w5300_interrupt()
459 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_detect_link()  local
462 		if (gpio_get_value(priv->link_gpio) != 0) {  in w5300_detect_link()
463 			netif_info(priv, link, ndev, "link is up\n");  in w5300_detect_link()
466 			netif_info(priv, link, ndev, "link is down\n");  in w5300_detect_link()
476 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_set_rx_mode()  local
479 	if (priv->promisc != set_promisc) {  in w5300_set_rx_mode()
480 		priv->promisc = set_promisc;  in w5300_set_rx_mode()
481 		w5300_hw_start(priv);  in w5300_set_rx_mode()
487 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_set_macaddr()  local
493 	w5300_write_macaddr(priv);  in w5300_set_macaddr()
499 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_open()  local
501 	netif_info(priv, ifup, ndev, "enabling\n");  in w5300_open()
502 	w5300_hw_start(priv);  in w5300_open()
503 	napi_enable(&priv->napi);  in w5300_open()
505 	if (!gpio_is_valid(priv->link_gpio) ||  in w5300_open()
506 	    gpio_get_value(priv->link_gpio) != 0)  in w5300_open()
513 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_stop()  local
515 	netif_info(priv, ifdown, ndev, "shutting down\n");  in w5300_stop()
516 	w5300_hw_close(priv);  in w5300_stop()
519 	napi_disable(&priv->napi);  in w5300_stop()
547 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_hw_probe()  local
561 	priv->base = devm_ioremap_resource(&pdev->dev, mem);  in w5300_hw_probe()
562 	if (IS_ERR(priv->base))  in w5300_hw_probe()
563 		return PTR_ERR(priv->base);  in w5300_hw_probe()
567 	spin_lock_init(&priv->reg_lock);  in w5300_hw_probe()
568 	priv->indirect = mem_size < W5300_BUS_DIRECT_SIZE;  in w5300_hw_probe()
569 	if (priv->indirect) {  in w5300_hw_probe()
570 		priv->read  = w5300_read_indirect;  in w5300_hw_probe()
571 		priv->write = w5300_write_indirect;  in w5300_hw_probe()
573 		priv->read  = w5300_read_direct;  in w5300_hw_probe()
574 		priv->write = w5300_write_direct;  in w5300_hw_probe()
577 	w5300_hw_reset(priv);  in w5300_hw_probe()
578 	if (w5300_read(priv, W5300_IDR) != IDR_W5300)  in w5300_hw_probe()
588 	priv->irq = irq;  in w5300_hw_probe()
590 	priv->link_gpio = data ? data->link_gpio : -EINVAL;  in w5300_hw_probe()
591 	if (gpio_is_valid(priv->link_gpio)) {  in w5300_hw_probe()
596 		priv->link_irq = gpio_to_irq(priv->link_gpio);  in w5300_hw_probe()
597 		if (request_any_context_irq(priv->link_irq, w5300_detect_link,  in w5300_hw_probe()
599 				link_name, priv->ndev) < 0)  in w5300_hw_probe()
600 			priv->link_gpio = -EINVAL;  in w5300_hw_probe()
609 	struct w5300_priv *priv;  in w5300_probe()  local
613 	ndev = alloc_etherdev(sizeof(*priv));  in w5300_probe()
618 	priv = netdev_priv(ndev);  in w5300_probe()
619 	priv->ndev = ndev;  in w5300_probe()
624 	netif_napi_add(ndev, &priv->napi, w5300_napi_poll, 16);  in w5300_probe()
651 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_remove()  local
653 	w5300_hw_reset(priv);  in w5300_remove()
654 	free_irq(priv->irq, ndev);  in w5300_remove()
655 	if (gpio_is_valid(priv->link_gpio))  in w5300_remove()
656 		free_irq(priv->link_irq, ndev);  in w5300_remove()
668 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_suspend()  local
674 		w5300_hw_close(priv);  in w5300_suspend()
683 	struct w5300_priv *priv = netdev_priv(ndev);  in w5300_resume()  local
686 		w5300_hw_reset(priv);  in w5300_resume()
687 		w5300_hw_start(priv);  in w5300_resume()
690 		if (!gpio_is_valid(priv->link_gpio) ||  in w5300_resume()
691 		    gpio_get_value(priv->link_gpio) != 0)  in w5300_resume()