3 	Written 1993-1998 by
27 II. Board-specific settings
29 None -- PC cards are autoconfigured.
33 The 3c574 uses a Boomerang-style interface, without the bus-master capability.
39 RunnerWrCtrl.  These are 11 bit down-counters that are preloaded with the
41 or Tx FIFO.  The chip is then able to hide the internal-PCI-bus to PC-card
46 0x0800-0x0fff can translated to the PIO FIFO.  Thus memory operations (faster
56 register set, 1-5 are various PC card control registers, and 16-31 are
88 #include <linux/mii.h>
167    On the "Odie" this window is always mapped at offsets 0x10-0x1f.
200 	unsigned char phys;			/* MII device address */
210 /* Set iff a MII transceiver on any interface requires mdio preamble.
212    code size of a per-interface flag is not worthwhile. */
266 	dev_dbg(&link->dev, "3c574_attach()\n");  in tc574_probe()
271 		return -ENOMEM;  in tc574_probe()
273 	link->priv = dev;  in tc574_probe()
274 	lp->p_dev = link;  in tc574_probe()
276 	spin_lock_init(&lp->window_lock);  in tc574_probe()
277 	link->resource[0]->end = 32;  in tc574_probe()
278 	link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16;  in tc574_probe()
279 	link->config_flags |= CONF_ENABLE_IRQ;  in tc574_probe()
280 	link->config_index = 1;  in tc574_probe()
282 	dev->netdev_ops = &el3_netdev_ops;  in tc574_probe()
283 	dev->watchdog_timeo = TX_TIMEOUT;  in tc574_probe()
290 	struct net_device *dev = link->priv;  in tc574_detach()
292 	dev_dbg(&link->dev, "3c574_detach()\n");  in tc574_detach()
305 	struct net_device *dev = link->priv;  in tc574_config()
315 	dev_dbg(&link->dev, "3c574_config()\n");  in tc574_config()
317 	link->io_lines = 16;  in tc574_config()
320 		link->resource[0]->start = j ^ 0x300;  in tc574_config()
336 	dev->irq = link->irq;  in tc574_config()
337 	dev->base_addr = link->resource[0]->start;  in tc574_config()
339 	ioaddr = dev->base_addr;  in tc574_config()
356 			pr_notice("IO port conflict at 0x%03lx-0x%03lx\n",  in tc574_config()
357 				  dev->base_addr, dev->base_addr+15);  in tc574_config()
362 	if (link->prod_id[1])  in tc574_config()
363 		cardname = link->prod_id[1];  in tc574_config()
372 		pr_info("  ASIC rev %d,", mcr>>3);  in tc574_config()
375 		lp->default_media = (config & Xcvr) >> Xcvr_shift;  in tc574_config()
376 		lp->autoselect = config & Autoselect ? 1 : 0;  in tc574_config()
379 	timer_setup(&lp->media, media_check, 0);  in tc574_config()
384 		/* Roadrunner only: Turn on the MII transceiver */  in tc574_config()
399 				lp->phys = phy & 0x1f;  in tc574_config()
400 				dev_dbg(&link->dev, "  MII transceiver at "  in tc574_config()
409 			pr_notice("  No MII transceivers found!\n");  in tc574_config()
412 		i = mdio_read(ioaddr, lp->phys, 16) | 0x40;  in tc574_config()
413 		mdio_write(ioaddr, lp->phys, 16, i);  in tc574_config()
414 		lp->advertising = mdio_read(ioaddr, lp->phys, 4);  in tc574_config()
417 			lp->advertising &= ~0x02a0;  in tc574_config()
418 			mdio_write(ioaddr, lp->phys, 4, lp->advertising);  in tc574_config()
422 	SET_NETDEV_DEV(dev, &link->dev);  in tc574_config()
430 		    cardname, dev->base_addr, dev->irq, dev->dev_addr);  in tc574_config()
440 	return -ENODEV;  in tc574_config()
451 	struct net_device *dev = link->priv;  in tc574_suspend()
453 	if (link->open)  in tc574_suspend()
461 	struct net_device *dev = link->priv;  in tc574_resume()
463 	if (link->open) {  in tc574_resume()
473 	unsigned int ioaddr = dev->base_addr;  in dump_status()
492 	outw(cmd, dev->base_addr + EL3_CMD);  in tc574_wait_for_completion()
493 	while (--i > 0)  in tc574_wait_for_completion()
494 		if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;  in tc574_wait_for_completion()
507 	for (timer = 1620; timer >= 0; timer--) {  in read_eeprom()
514 /* MII transceiver control section.
515    Read and write the MII registers using software-generated serial
516    MDIO protocol.  See the MII specifications or DP83840A data sheet
535 	while (-- bits >= 0) {  in mdio_sync()
552 	for (i = 14; i >= 0; i--) {  in mdio_read()
557 	/* Read the two transition, 16 data, and wire-idle bits. */  in mdio_read()
558 	for (i = 19; i > 0; i--) {  in mdio_read()
576 	for (i = 31; i >= 0; i--) {  in mdio_write()
582 	for (i = 1; i >= 0; i--) {  in mdio_write()
593 	unsigned int ioaddr = dev->base_addr;  in tc574_reset()
598 	spin_lock_irqsave(&lp->window_lock, flags);  in tc574_reset()
606 		outb(dev->dev_addr[i], ioaddr + i);  in tc574_reset()
612 	outb((dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);  in tc574_reset()
613 	outl((lp->autoselect ? 0x01000000 : 0) | 0x0062001b,  in tc574_reset()
615 	/* Roadrunner only: Turn on the MII transceiver. */  in tc574_reset()
620 	spin_unlock_irqrestore(&lp->window_lock, flags);  in tc574_reset()
625 	spin_lock_irqsave(&lp->window_lock, flags);  in tc574_reset()
644 	spin_unlock_irqrestore(&lp->window_lock, flags);  in tc574_reset()
646 	/* .. re-sync MII and re-fill what NWay is advertising. */  in tc574_reset()
648 	mdio_write(ioaddr, lp->phys, 4, lp->advertising);  in tc574_reset()
650 		/* works for TDK 78Q2120 series MII's */  in tc574_reset()
651 		i = mdio_read(ioaddr, lp->phys, 16) | 0x20;  in tc574_reset()
652 		mdio_write(ioaddr, lp->phys, 16, i);  in tc574_reset()
655 	spin_lock_irqsave(&lp->window_lock, flags);  in tc574_reset()
658 	spin_unlock_irqrestore(&lp->window_lock, flags);  in tc574_reset()
674 	struct pcmcia_device *link = lp->p_dev;  in el3_open()
677 		return -ENODEV;  in el3_open()
679 	link->open++;  in el3_open()
683 	lp->media.expires = jiffies + HZ;  in el3_open()
684 	add_timer(&lp->media);  in el3_open()
686 	dev_dbg(&link->dev, "%s: opened, status %4.4x.\n",  in el3_open()
687 		  dev->name, inw(dev->base_addr + EL3_STATUS));  in el3_open()
694 	unsigned int ioaddr = dev->base_addr;  in el3_tx_timeout()
698 	dev->stats.tx_errors++;  in el3_tx_timeout()
708 	unsigned int ioaddr = dev->base_addr;  in pop_tx_status()
712 	for (i = 32; i > 0; i--) {  in pop_tx_status()
721 				  dev->name, tx_status);  in pop_tx_status()
723 			dev->stats.tx_aborted_errors++;  in pop_tx_status()
732 	unsigned int ioaddr = dev->base_addr;  in el3_start_xmit()
737 		  "status %4.4x.\n", dev->name, (long)skb->len,  in el3_start_xmit()
740 	spin_lock_irqsave(&lp->window_lock, flags);  in el3_start_xmit()
742 	dev->stats.tx_bytes += skb->len;  in el3_start_xmit()
745 	outw(skb->len, ioaddr + TX_FIFO);  in el3_start_xmit()
748 	outsl(ioaddr + TX_FIFO, skb->data, (skb->len+3)>>2);  in el3_start_xmit()
753 		/* Interrupt us when the FIFO has room for max-sized packet.   in el3_start_xmit()
759 	spin_unlock_irqrestore(&lp->window_lock, flags);  in el3_start_xmit()
776 	ioaddr = dev->base_addr;  in el3_interrupt()
779 		  dev->name, inw(ioaddr + EL3_STATUS));  in el3_interrupt()
781 	spin_lock(&lp->window_lock);  in el3_interrupt()
787 			pr_debug("%s: Interrupt from dead card\n", dev->name);  in el3_interrupt()
798 			/* There's room in the FIFO for a full-sized packet. */  in el3_interrupt()
836 		if (--work_budget < 0) {  in el3_interrupt()
838 				  "status %4.4x.\n", dev->name, status);  in el3_interrupt()
848 		  dev->name, inw(ioaddr + EL3_STATUS));  in el3_interrupt()
850 	spin_unlock(&lp->window_lock);  in el3_interrupt()
857 	the MII, reporting changes in cable status.
862 	struct net_device *dev = lp->p_dev->priv;  in media_check()
863 	unsigned int ioaddr = dev->base_addr;  in media_check()
873 		if (!lp->fast_poll)  in media_check()
877 		el3_interrupt(dev->irq, dev);  in media_check()
880 		lp->fast_poll = HZ;  in media_check()
882 	if (lp->fast_poll) {  in media_check()
883 		lp->fast_poll--;  in media_check()
884 		lp->media.expires = jiffies + 2*HZ/100;  in media_check()
885 		add_timer(&lp->media);  in media_check()
889 	spin_lock_irqsave(&lp->window_lock, flags);  in media_check()
891 	media = mdio_read(ioaddr, lp->phys, 1);  in media_check()
892 	partner = mdio_read(ioaddr, lp->phys, 5);  in media_check()
895 	if (media != lp->media_status) {  in media_check()
896 		if ((media ^ lp->media_status) & 0x0004)  in media_check()
898 				    (lp->media_status & 0x0004) ? "lost" : "found");  in media_check()
899 		if ((media ^ lp->media_status) & 0x0020) {  in media_check()
900 			lp->partner = 0;  in media_check()
901 			if (lp->media_status & 0x0020) {  in media_check()
904 				partner &= lp->advertising;  in media_check()
905 				lp->partner = partner;  in media_check()
907 					    "%dbaseT-%cD selected\n",  in media_check()
916 				 (dev->mtu > 1500 ? 0x40 : 0), ioaddr + Wn3_MAC_Ctrl);  in media_check()
924 		lp->media_status = media;  in media_check()
926 	spin_unlock_irqrestore(&lp->window_lock, flags);  in media_check()
929 	lp->media.expires = jiffies + HZ;  in media_check()
930 	add_timer(&lp->media);  in media_check()
939 		spin_lock_irqsave(&lp->window_lock, flags);  in el3_get_stats()
941 		spin_unlock_irqrestore(&lp->window_lock, flags);  in el3_get_stats()
943 	return &dev->stats;  in el3_get_stats()
947 	Surprisingly this need not be run single-threaded, but it effectively is.
952 	unsigned int ioaddr = dev->base_addr;  in update_stats()
955 	pr_debug("%s: updating the statistics.\n", dev->name);  in update_stats()
963 	dev->stats.tx_carrier_errors 		+= inb(ioaddr + 0);  in update_stats()
964 	dev->stats.tx_heartbeat_errors		+= inb(ioaddr + 1);  in update_stats()
966 	dev->stats.collisions			+= inb(ioaddr + 3);  in update_stats()
967 	dev->stats.tx_window_errors		+= inb(ioaddr + 4);  in update_stats()
968 	dev->stats.rx_fifo_errors		+= inb(ioaddr + 5);  in update_stats()
969 	dev->stats.tx_packets			+= inb(ioaddr + 6);  in update_stats()
971 	dev->stats.tx_packets			+= (up&0x30) << 4;  in update_stats()
986 	unsigned int ioaddr = dev->base_addr;  in el3_rx()
990 		  dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RxStatus));  in el3_rx()
993 		worklimit--;  in el3_rx()
996 			dev->stats.rx_errors++;  in el3_rx()
998 			case 0x0000:	dev->stats.rx_over_errors++; break;  in el3_rx()
999 			case 0x0800:	dev->stats.rx_length_errors++; break;  in el3_rx()
1000 			case 0x1000:	dev->stats.rx_frame_errors++; break;  in el3_rx()
1001 			case 0x1800:	dev->stats.rx_length_errors++; break;  in el3_rx()
1002 			case 0x2000:	dev->stats.rx_frame_errors++; break;  in el3_rx()
1003 			case 0x2800:	dev->stats.rx_crc_errors++; break;  in el3_rx()
1017 				skb->protocol = eth_type_trans(skb, dev);  in el3_rx()
1019 				dev->stats.rx_packets++;  in el3_rx()
1020 				dev->stats.rx_bytes += pkt_len;  in el3_rx()
1023 					  " size %d.\n", dev->name, pkt_len);  in el3_rx()
1024 				dev->stats.rx_dropped++;  in el3_rx()
1033 /* Provide ioctl() calls to examine the MII xcvr state. */
1037 	unsigned int ioaddr = dev->base_addr;  in el3_ioctl()
1039 	int phy = lp->phys & 0x1f;  in el3_ioctl()
1041 	pr_debug("%s: In ioct(%-.6s, %#4.4x) %4.4x %4.4x %4.4x %4.4x.\n",  in el3_ioctl()
1042 		  dev->name, rq->ifr_ifrn.ifrn_name, cmd,  in el3_ioctl()
1043 		  data->phy_id, data->reg_num, data->val_in, data->val_out);  in el3_ioctl()
1047 		data->phy_id = phy;  in el3_ioctl()
1049 	case SIOCGMIIREG:		/* Read the specified MII register. */  in el3_ioctl()
1054 			spin_lock_irqsave(&lp->window_lock, flags);  in el3_ioctl()
1057 			data->val_out = mdio_read(ioaddr, data->phy_id & 0x1f,  in el3_ioctl()
1058 						  data->reg_num & 0x1f);  in el3_ioctl()
1060 			spin_unlock_irqrestore(&lp->window_lock, flags);  in el3_ioctl()
1063 	case SIOCSMIIREG:		/* Write the specified MII register */  in el3_ioctl()
1068 			spin_lock_irqsave(&lp->window_lock, flags);  in el3_ioctl()
1071 			mdio_write(ioaddr, data->phy_id & 0x1f,  in el3_ioctl()
1072 				   data->reg_num & 0x1f, data->val_in);  in el3_ioctl()
1074 			spin_unlock_irqrestore(&lp->window_lock, flags);  in el3_ioctl()
1078 		return -EOPNOTSUPP;  in el3_ioctl()
1092 	unsigned int ioaddr = dev->base_addr;  in set_rx_mode()
1094 	if (dev->flags & IFF_PROMISC)  in set_rx_mode()
1097 	else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI))  in set_rx_mode()
1108 	spin_lock_irqsave(&lp->window_lock, flags);  in set_multicast_list()
1110 	spin_unlock_irqrestore(&lp->window_lock, flags);  in set_multicast_list()
1115 	unsigned int ioaddr = dev->base_addr;  in el3_close()
1117 	struct pcmcia_device *link = lp->p_dev;  in el3_close()
1119 	dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name);  in el3_close()
1124 		/* Turn off statistics ASAP.  We update lp->stats below. */  in el3_close()
1133 		spin_lock_irqsave(&lp->window_lock, flags);  in el3_close()
1135 		spin_unlock_irqrestore(&lp->window_lock, flags);  in el3_close()
1141 	link->open--;  in el3_close()
1143 	del_timer_sync(&lp->media);  in el3_close()