92 	u8   (*read)(struct w5100_priv *priv, u16 addr);
93 	void (*write)(struct w5100_priv *priv, u16 addr, u8 data);
94 	u16  (*read16)(struct w5100_priv *priv, u16 addr);
95 	void (*write16)(struct w5100_priv *priv, u16 addr, u16 data);
96 	void (*readbuf)(struct w5100_priv *priv, u16 addr, u8 *buf, int len);
97 	void (*writebuf)(struct w5100_priv *priv, u16 addr, u8 *buf, int len);
120 static inline u8 w5100_read_direct(struct w5100_priv *priv, u16 addr)  in w5100_read_direct()  argument
122 	return ioread8(priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));  in w5100_read_direct()
125 static inline void w5100_write_direct(struct w5100_priv *priv,  in w5100_write_direct()  argument
128 	iowrite8(data, priv->base + (addr << CONFIG_WIZNET_BUS_SHIFT));  in w5100_write_direct()
131 static u16 w5100_read16_direct(struct w5100_priv *priv, u16 addr)  in w5100_read16_direct()  argument
134 	data  = w5100_read_direct(priv, addr) << 8;  in w5100_read16_direct()
135 	data |= w5100_read_direct(priv, addr + 1);  in w5100_read16_direct()
139 static void w5100_write16_direct(struct w5100_priv *priv, u16 addr, u16 data)  in w5100_write16_direct()  argument
141 	w5100_write_direct(priv, addr, data >> 8);  in w5100_write16_direct()
142 	w5100_write_direct(priv, addr + 1, data);  in w5100_write16_direct()
145 static void w5100_readbuf_direct(struct w5100_priv *priv,  in w5100_readbuf_direct()  argument
154 		*buf++ = w5100_read_direct(priv, addr);  in w5100_readbuf_direct()
158 static void w5100_writebuf_direct(struct w5100_priv *priv,  in w5100_writebuf_direct()  argument
167 		w5100_write_direct(priv, addr, *buf++);  in w5100_writebuf_direct()
182 static u8 w5100_read_indirect(struct w5100_priv *priv, u16 addr)  in w5100_read_indirect()  argument
187 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_read_indirect()
188 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_read_indirect()
190 	data = w5100_read_direct(priv, W5100_IDM_DR);  in w5100_read_indirect()
191 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_read_indirect()
196 static void w5100_write_indirect(struct w5100_priv *priv, u16 addr, u8 data)  in w5100_write_indirect()  argument
200 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_write_indirect()
201 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_write_indirect()
203 	w5100_write_direct(priv, W5100_IDM_DR, data);  in w5100_write_indirect()
205 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_write_indirect()
208 static u16 w5100_read16_indirect(struct w5100_priv *priv, u16 addr)  in w5100_read16_indirect()  argument
213 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_read16_indirect()
214 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_read16_indirect()
216 	data  = w5100_read_direct(priv, W5100_IDM_DR) << 8;  in w5100_read16_indirect()
217 	data |= w5100_read_direct(priv, W5100_IDM_DR);  in w5100_read16_indirect()
218 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_read16_indirect()
223 static void w5100_write16_indirect(struct w5100_priv *priv, u16 addr, u16 data)  in w5100_write16_indirect()  argument
227 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_write16_indirect()
228 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_write16_indirect()
230 	w5100_write_direct(priv, W5100_IDM_DR, data >> 8);  in w5100_write16_indirect()
231 	w5100_write_direct(priv, W5100_IDM_DR, data);  in w5100_write16_indirect()
233 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_write16_indirect()
236 static void w5100_readbuf_indirect(struct w5100_priv *priv,  in w5100_readbuf_indirect()  argument
243 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_readbuf_indirect()
244 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_readbuf_indirect()
250 			w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_readbuf_indirect()
253 		*buf++ = w5100_read_direct(priv, W5100_IDM_DR);  in w5100_readbuf_indirect()
256 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_readbuf_indirect()
259 static void w5100_writebuf_indirect(struct w5100_priv *priv,  in w5100_writebuf_indirect()  argument
266 	spin_lock_irqsave(&priv->reg_lock, flags);  in w5100_writebuf_indirect()
267 	w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_writebuf_indirect()
273 			w5100_write16_direct(priv, W5100_IDM_AR, addr);  in w5100_writebuf_indirect()
276 		w5100_write_direct(priv, W5100_IDM_DR, *buf++);  in w5100_writebuf_indirect()
279 	spin_unlock_irqrestore(&priv->reg_lock, flags);  in w5100_writebuf_indirect()
299 #define w5100_read	priv->read
300 #define w5100_write	priv->write
301 #define w5100_read16	priv->read16
302 #define w5100_write16	priv->write16
303 #define w5100_readbuf	priv->readbuf
304 #define w5100_writebuf	priv->writebuf
307 static int w5100_command(struct w5100_priv *priv, u16 cmd)  in w5100_command()  argument
311 	w5100_write(priv, W5100_S0_CR, cmd);  in w5100_command()
314 	while (w5100_read(priv, W5100_S0_CR) != 0) {  in w5100_command()
323 static void w5100_write_macaddr(struct w5100_priv *priv)  in w5100_write_macaddr()  argument
325 	struct net_device *ndev = priv->ndev;  in w5100_write_macaddr()
329 		w5100_write(priv, W5100_SHAR + i, ndev->dev_addr[i]);  in w5100_write_macaddr()
333 static void w5100_hw_reset(struct w5100_priv *priv)  in w5100_hw_reset()  argument
335 	w5100_write_direct(priv, W5100_MR, MR_RST);  in w5100_hw_reset()
338 	w5100_write_direct(priv, W5100_MR, priv->indirect ?  in w5100_hw_reset()
342 	w5100_write(priv, W5100_IMR, 0);  in w5100_hw_reset()
343 	w5100_write_macaddr(priv);  in w5100_hw_reset()
348 	w5100_write(priv, W5100_RMSR, 0x03);  in w5100_hw_reset()
349 	w5100_write(priv, W5100_TMSR, 0x03);  in w5100_hw_reset()
353 static void w5100_hw_start(struct w5100_priv *priv)  in w5100_hw_start()  argument
355 	w5100_write(priv, W5100_S0_MR, priv->promisc ?  in w5100_hw_start()
358 	w5100_command(priv, S0_CR_OPEN);  in w5100_hw_start()
359 	w5100_write(priv, W5100_IMR, IR_S0);  in w5100_hw_start()
363 static void w5100_hw_close(struct w5100_priv *priv)  in w5100_hw_close()  argument
365 	w5100_write(priv, W5100_IMR, 0);  in w5100_hw_close()
367 	w5100_command(priv, S0_CR_CLOSE);  in w5100_hw_close()
387 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_get_link()  local
389 	if (gpio_is_valid(priv->link_gpio))  in w5100_get_link()
390 		return !!gpio_get_value(priv->link_gpio);  in w5100_get_link()
397 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_get_msglevel()  local
399 	return priv->msg_enable;  in w5100_get_msglevel()
404 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_set_msglevel()  local
406 	priv->msg_enable = value;  in w5100_set_msglevel()
417 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_get_regs()  local
423 		*buf++ = w5100_read(priv, W5100_COMMON_REGS + i);  in w5100_get_regs()
425 		*buf++ = w5100_read(priv, W5100_S0_REGS + i);  in w5100_get_regs()
430 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_tx_timeout()  local
433 	w5100_hw_reset(priv);  in w5100_tx_timeout()
434 	w5100_hw_start(priv);  in w5100_tx_timeout()
442 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_start_tx()  local
447 	offset = w5100_read16(priv, W5100_S0_TX_WR);  in w5100_start_tx()
448 	w5100_writebuf(priv, offset, skb->data, skb->len);  in w5100_start_tx()
449 	w5100_write16(priv, W5100_S0_TX_WR, offset + skb->len);  in w5100_start_tx()
455 	w5100_command(priv, S0_CR_SEND);  in w5100_start_tx()
462 	struct w5100_priv *priv = container_of(napi, struct w5100_priv, napi);  in w5100_napi_poll()  local
463 	struct net_device *ndev = priv->ndev;  in w5100_napi_poll()
471 		u16 rx_buf_len = w5100_read16(priv, W5100_S0_RX_RSR);  in w5100_napi_poll()
475 		offset = w5100_read16(priv, W5100_S0_RX_RD);  in w5100_napi_poll()
476 		w5100_readbuf(priv, offset, header, 2);  in w5100_napi_poll()
481 			w5100_write16(priv, W5100_S0_RX_RD,  in w5100_napi_poll()
483 			w5100_command(priv, S0_CR_RECV);  in w5100_napi_poll()
489 		w5100_readbuf(priv, offset + 2, skb->data, rx_len);  in w5100_napi_poll()
490 		w5100_write16(priv, W5100_S0_RX_RD, offset + 2 + rx_len);  in w5100_napi_poll()
492 		w5100_command(priv, S0_CR_RECV);  in w5100_napi_poll()
502 		w5100_write(priv, W5100_IMR, IR_S0);  in w5100_napi_poll()
512 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_interrupt()  local
514 	int ir = w5100_read(priv, W5100_S0_IR);  in w5100_interrupt()
517 	w5100_write(priv, W5100_S0_IR, ir);  in w5100_interrupt()
521 		netif_dbg(priv, tx_done, ndev, "tx done\n");  in w5100_interrupt()
526 		if (napi_schedule_prep(&priv->napi)) {  in w5100_interrupt()
527 			w5100_write(priv, W5100_IMR, 0);  in w5100_interrupt()
529 			__napi_schedule(&priv->napi);  in w5100_interrupt()
539 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_detect_link()  local
542 		if (gpio_get_value(priv->link_gpio) != 0) {  in w5100_detect_link()
543 			netif_info(priv, link, ndev, "link is up\n");  in w5100_detect_link()
546 			netif_info(priv, link, ndev, "link is down\n");  in w5100_detect_link()
556 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_set_rx_mode()  local
559 	if (priv->promisc != set_promisc) {  in w5100_set_rx_mode()
560 		priv->promisc = set_promisc;  in w5100_set_rx_mode()
561 		w5100_hw_start(priv);  in w5100_set_rx_mode()
567 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_set_macaddr()  local
573 	w5100_write_macaddr(priv);  in w5100_set_macaddr()
579 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_open()  local
581 	netif_info(priv, ifup, ndev, "enabling\n");  in w5100_open()
582 	w5100_hw_start(priv);  in w5100_open()
583 	napi_enable(&priv->napi);  in w5100_open()
585 	if (!gpio_is_valid(priv->link_gpio) ||  in w5100_open()
586 	    gpio_get_value(priv->link_gpio) != 0)  in w5100_open()
593 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_stop()  local
595 	netif_info(priv, ifdown, ndev, "shutting down\n");  in w5100_stop()
596 	w5100_hw_close(priv);  in w5100_stop()
599 	napi_disable(&priv->napi);  in w5100_stop()
627 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_hw_probe()  local
641 	priv->base = devm_ioremap_resource(&pdev->dev, mem);  in w5100_hw_probe()
642 	if (IS_ERR(priv->base))  in w5100_hw_probe()
643 		return PTR_ERR(priv->base);  in w5100_hw_probe()
647 	spin_lock_init(&priv->reg_lock);  in w5100_hw_probe()
648 	priv->indirect = mem_size < W5100_BUS_DIRECT_SIZE;  in w5100_hw_probe()
649 	if (priv->indirect) {  in w5100_hw_probe()
650 		priv->read     = w5100_read_indirect;  in w5100_hw_probe()
651 		priv->write    = w5100_write_indirect;  in w5100_hw_probe()
652 		priv->read16   = w5100_read16_indirect;  in w5100_hw_probe()
653 		priv->write16  = w5100_write16_indirect;  in w5100_hw_probe()
654 		priv->readbuf  = w5100_readbuf_indirect;  in w5100_hw_probe()
655 		priv->writebuf = w5100_writebuf_indirect;  in w5100_hw_probe()
657 		priv->read     = w5100_read_direct;  in w5100_hw_probe()
658 		priv->write    = w5100_write_direct;  in w5100_hw_probe()
659 		priv->read16   = w5100_read16_direct;  in w5100_hw_probe()
660 		priv->write16  = w5100_write16_direct;  in w5100_hw_probe()
661 		priv->readbuf  = w5100_readbuf_direct;  in w5100_hw_probe()
662 		priv->writebuf = w5100_writebuf_direct;  in w5100_hw_probe()
665 	w5100_hw_reset(priv);  in w5100_hw_probe()
666 	if (w5100_read16(priv, W5100_RTR) != RTR_DEFAULT)  in w5100_hw_probe()
676 	priv->irq = irq;  in w5100_hw_probe()
678 	priv->link_gpio = data ? data->link_gpio : -EINVAL;  in w5100_hw_probe()
679 	if (gpio_is_valid(priv->link_gpio)) {  in w5100_hw_probe()
684 		priv->link_irq = gpio_to_irq(priv->link_gpio);  in w5100_hw_probe()
685 		if (request_any_context_irq(priv->link_irq, w5100_detect_link,  in w5100_hw_probe()
687 				link_name, priv->ndev) < 0)  in w5100_hw_probe()
688 			priv->link_gpio = -EINVAL;  in w5100_hw_probe()
697 	struct w5100_priv *priv;  in w5100_probe()  local
701 	ndev = alloc_etherdev(sizeof(*priv));  in w5100_probe()
706 	priv = netdev_priv(ndev);  in w5100_probe()
707 	priv->ndev = ndev;  in w5100_probe()
712 	netif_napi_add(ndev, &priv->napi, w5100_napi_poll, 16);  in w5100_probe()
739 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_remove()  local
741 	w5100_hw_reset(priv);  in w5100_remove()
742 	free_irq(priv->irq, ndev);  in w5100_remove()
743 	if (gpio_is_valid(priv->link_gpio))  in w5100_remove()
744 		free_irq(priv->link_irq, ndev);  in w5100_remove()
756 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_suspend()  local
762 		w5100_hw_close(priv);  in w5100_suspend()
771 	struct w5100_priv *priv = netdev_priv(ndev);  in w5100_resume()  local
774 		w5100_hw_reset(priv);  in w5100_resume()
775 		w5100_hw_start(priv);  in w5100_resume()
778 		if (!gpio_is_valid(priv->link_gpio) ||  in w5100_resume()
779 		    gpio_get_value(priv->link_gpio) != 0)  in w5100_resume()