1 /* mac89x0.c: A Crystal Semiconductor CS89[02]0 driver for linux. */
4 	written 1993-1994 by Donald Becker.
14   Mike Cruse        : mcruse@cti-ltd.com
31   David Huggins-Daines <dhd@debian.org>
37     * Removed all the media-detection stuff, because these cards are
38     TP-only.
50   have to probe for them in a brain-damaged ISA-like fashion.
52   Arnaldo Carvalho de Melo <acme@conectiva.com.br> - 11/01/2001
56   local_irq_{dis,en}able()
62 "cs89x0.c:v1.02 11/26/96 Russell Nelson <nelson@crynwr.com>\n";
71 	Crystal Semiconductor data sheets.
99 static int debug = -1;
124 /* For reading/writing registers ISA-style */
128 	nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);  in readreg_io()
129 	return swab16(nubus_readw(dev->base_addr + DATA_PORT));  in readreg_io()
135 	nubus_writew(swab16(portno), dev->base_addr + ADD_PORT);  in writereg_io()
136 	nubus_writew(swab16(value), dev->base_addr + DATA_PORT);  in writereg_io()
143 	return swab16(nubus_readw(dev->mem_start + portno));  in readreg()
149 	nubus_writew(swab16(value), dev->mem_start + portno);  in writereg()
172 	int err = -ENODEV;  in mac89x0_device_probe()
177 		return -ENOMEM;  in mac89x0_device_probe()
183 		if (fres->board->slot == slot)  in mac89x0_device_probe()
186 	/* The pseudo-ISA bits always live at offset 0x300 (gee,  in mac89x0_device_probe()
204 	SET_NETDEV_DEV(dev, &pdev->dev);  in mac89x0_device_probe()
209 	lp->msg_enable = netif_msg_init(debug, 0);  in mac89x0_device_probe()
212 	dev->base_addr = ioaddr;  in mac89x0_device_probe()
213 	dev->mem_start = (unsigned long)  in mac89x0_device_probe()
215 	dev->mem_end = dev->mem_start + 0x1000;  in mac89x0_device_probe()
222 	lp->chip_type = rev_type &~ REVISON_BITS;  in mac89x0_device_probe()
223 	lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';  in mac89x0_device_probe()
227 	lp->send_cmd = TX_AFTER_381;  in mac89x0_device_probe()
228 	if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')  in mac89x0_device_probe()
229 		lp->send_cmd = TX_NOW;  in mac89x0_device_probe()
230 	if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')  in mac89x0_device_probe()
231 		lp->send_cmd = TX_NOW;  in mac89x0_device_probe()
236 		lp->chip_type == CS8900 ? '0' : '2',  in mac89x0_device_probe()
237 		lp->chip_type == CS8920M ? "M" : "",  in mac89x0_device_probe()
238 		lp->chip_revision, dev->base_addr);  in mac89x0_device_probe()
248 			/* Big-endian (why??!) */  in mac89x0_device_probe()
256 	dev->irq = SLOT2IRQ(slot);  in mac89x0_device_probe()
260 	pr_info("MAC %pM, IRQ %d\n", dev->dev_addr, dev->irq);  in mac89x0_device_probe()
262 	dev->netdev_ops		= &mac89x0_netdev_ops;  in mac89x0_device_probe()
271 	nubus_writew(0, dev->base_addr + ADD_PORT);  in mac89x0_device_probe()
282    there is non-reboot way to recover if something goes wrong.
294 	if (request_irq(dev->irq, net_interrupt, 0, "cs89x0", dev))  in net_open()
295 		return -EAGAIN;  in net_open()
297 	/* Set up the IRQ - Apparently magic */  in net_open()
298 	if (lp->chip_type == CS8900)  in net_open()
305 		writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));  in net_open()
311 	lp->rx_mode = 0;  in net_open()
314 	lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;  in net_open()
316 	writereg(dev, PP_RxCFG, lp->curr_rx_cfg);  in net_open()
337 		  skb->len, skb->data[ETH_ALEN + ETH_ALEN] << 8 |  in net_send_packet()
338 		  skb->data[ETH_ALEN + ETH_ALEN + 1]);  in net_send_packet()
347 	writereg(dev, PP_TxCMD, lp->send_cmd);  in net_send_packet()
348 	writereg(dev, PP_TxLength, skb->len);  in net_send_packet()
359 	skb_copy_from_linear_data(skb, (void *)(dev->mem_start + PP_TxFrame),  in net_send_packet()
360 				  skb->len+1);  in net_send_packet()
376 	ioaddr = dev->base_addr;  in net_interrupt()
386 	while ((status = swab16(nubus_readw(dev->base_addr + ISQ_PORT)))) {  in net_interrupt()
394 			dev->stats.tx_packets++;  in net_interrupt()
397 				dev->stats.tx_errors++;  in net_interrupt()
399 				dev->stats.tx_carrier_errors++;  in net_interrupt()
401 				dev->stats.tx_heartbeat_errors++;  in net_interrupt()
403 				dev->stats.tx_window_errors++;  in net_interrupt()
405 				dev->stats.tx_aborted_errors++;  in net_interrupt()
418                                 lp->send_underrun++;  in net_interrupt()
419                                 if (lp->send_underrun == 3) lp->send_cmd = TX_AFTER_381;  in net_interrupt()
420                                 else if (lp->send_underrun == 6) lp->send_cmd = TX_AFTER_ALL;  in net_interrupt()
424 			dev->stats.rx_missed_errors += (status >> 6);  in net_interrupt()
427 			dev->stats.collisions += (status >> 6);  in net_interrupt()
444 		dev->stats.rx_errors++;  in net_rx()
446 				dev->stats.rx_length_errors++;  in net_rx()
448 				dev->stats.rx_length_errors++;  in net_rx()
452 			dev->stats.rx_crc_errors++;  in net_rx()
454 				dev->stats.rx_frame_errors++;  in net_rx()
462 		dev->stats.rx_dropped++;  in net_rx()
467 	skb_copy_to_linear_data(skb, (void *)(dev->mem_start + PP_RxFrame),  in net_rx()
471 		  length, skb->data[ETH_ALEN + ETH_ALEN] << 8 |  in net_rx()
472 		  skb->data[ETH_ALEN + ETH_ALEN + 1]);  in net_rx()
474         skb->protocol=eth_type_trans(skb,dev);  in net_rx()
476 	dev->stats.rx_packets++;  in net_rx()
477 	dev->stats.rx_bytes += length;  in net_rx()
492 	free_irq(dev->irq, dev);  in net_close()
509 	dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);  in net_get_stats()
510 	dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);  in net_get_stats()
513 	return &dev->stats;  in net_get_stats()
520 	if(dev->flags&IFF_PROMISC)  in set_multicast_list()
522 		lp->rx_mode = RX_ALL_ACCEPT;  in set_multicast_list()
523 	} else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev)) {  in set_multicast_list()
524 		/* The multicast-accept list is initialized to accept-all, and we  in set_multicast_list()
525 		   rely on higher-level filtering for now. */  in set_multicast_list()
526 		lp->rx_mode = RX_MULTCAST_ACCEPT;  in set_multicast_list()
529 		lp->rx_mode = 0;  in set_multicast_list()
531 	writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);  in set_multicast_list()
534 	writereg(dev, PP_RxCFG, lp->curr_rx_cfg |  in set_multicast_list()
535 	     (lp->rx_mode == RX_ALL_ACCEPT? (RX_CRC_ERROR_ENBL|RX_RUNT_ENBL|RX_EXTRA_DATA_ENBL) : 0));  in set_multicast_list()
544 	if (!is_valid_ether_addr(saddr->sa_data))  in set_mac_address()
545 		return -EADDRNOTAVAIL;  in set_mac_address()
547 	eth_hw_addr_set(dev, saddr->sa_data);  in set_mac_address()
548 	netdev_info(dev, "Setting MAC address to %pM\n", dev->dev_addr);  in set_mac_address()
552 		writereg(dev, PP_IA+i*2, dev->dev_addr[i*2] | (dev->dev_addr[i*2+1] << 8));  in set_mac_address()
564 	nubus_writew(0, dev->base_addr + ADD_PORT);  in mac89x0_device_remove()