1 /*======================================================================
3 A PCMCIA ethernet driver for the 3com 3c589 card.
5 Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net
7 3c589_cs.c 1.162 2001/10/13 00:08:50
9 The network driver code is based on Donald Becker's 3c589 code:
11 Written 1994 by Donald Becker.
12 Copyright 1993 United States Government as represented by the
13 Director, National Security Agency. This software may be used and
14 distributed according to the terms of the GNU General Public License,
15 incorporated herein by reference.
16 Donald Becker may be reached at becker@scyld.com
18 Updated for 2.5.x by Alan Cox <alan@lxorguk.ukuu.org.uk>
20 ======================================================================*/
22 #define DRV_NAME "3c589_cs"
23 #define DRV_VERSION "1.162-ac"
25 #include <linux/module.h>
26 #include <linux/init.h>
27 #include <linux/kernel.h>
28 #include <linux/ptrace.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
31 #include <linux/timer.h>
32 #include <linux/interrupt.h>
34 #include <linux/delay.h>
35 #include <linux/ethtool.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/skbuff.h>
39 #include <linux/if_arp.h>
40 #include <linux/ioport.h>
41 #include <linux/bitops.h>
42 #include <linux/jiffies.h>
44 #include <pcmcia/cs_types.h>
45 #include <pcmcia/cs.h>
46 #include <pcmcia/cistpl.h>
47 #include <pcmcia/cisreg.h>
48 #include <pcmcia/ciscode.h>
49 #include <pcmcia/ds.h>
51 #include <asm/uaccess.h>
53 #include <asm/system.h>
55 /* To minimize the size of the driver source I only define operating
56 constants if they are used several times. You'll need the manual
57 if you want to understand driver details. */
58 /* Offsets from base I/O address. */
60 #define EL3_TIMER 0x0a
62 #define EL3_STATUS 0x0e
64 #define EEPROM_READ 0x0080
65 #define EEPROM_BUSY 0x8000
67 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
69 /* The top five bits written to EL3_CMD are a command, the lower
70 11 bits are the parameter, if applicable. */
72 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
73 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
74 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
75 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
76 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
77 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
78 StatsDisable = 22<<11, StopCoax = 23<<11,
82 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
83 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
84 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000
87 /* The SetRxFilter command accepts the following classes: */
89 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8
92 /* Register window 1 offsets, the window used in normal operation. */
95 #define RX_STATUS 0x08
96 #define TX_STATUS 0x0B
97 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
99 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
100 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
101 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
102 #define MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */
104 /* Time in jiffies before concluding Tx hung */
105 #define TX_TIMEOUT ((400*HZ)/1000)
108 struct pcmcia_device *p_dev;
110 /* For transceiver monitoring */
111 struct timer_list media;
114 unsigned long last_irq;
118 static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
120 /*====================================================================*/
122 /* Module parameters */
124 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
125 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
126 MODULE_LICENSE("GPL");
128 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
130 /* Special hook for setting if_port when module is loaded */
131 INT_MODULE_PARM(if_port, 0);
134 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
135 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
136 static char *version =
137 DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
139 #define DEBUG(n, args...)
142 /*====================================================================*/
144 static int tc589_config(struct pcmcia_device *link);
145 static void tc589_release(struct pcmcia_device *link);
147 static u16 read_eeprom(unsigned int ioaddr, int index);
148 static void tc589_reset(struct net_device *dev);
149 static void media_check(unsigned long arg);
150 static int el3_config(struct net_device *dev, struct ifmap *map);
151 static int el3_open(struct net_device *dev);
152 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
153 static irqreturn_t el3_interrupt(int irq, void *dev_id);
154 static void update_stats(struct net_device *dev);
155 static struct net_device_stats *el3_get_stats(struct net_device *dev);
156 static int el3_rx(struct net_device *dev);
157 static int el3_close(struct net_device *dev);
158 static void el3_tx_timeout(struct net_device *dev);
159 static void set_multicast_list(struct net_device *dev);
160 static const struct ethtool_ops netdev_ethtool_ops;
162 static void tc589_detach(struct pcmcia_device *p_dev);
164 /*======================================================================
166 tc589_attach() creates an "instance" of the driver, allocating
167 local data structures for one device. The device is registered
170 ======================================================================*/
172 static int tc589_probe(struct pcmcia_device *link)
174 struct el3_private *lp;
175 struct net_device *dev;
177 DEBUG(0, "3c589_attach()\n");
179 /* Create new ethernet device */
180 dev = alloc_etherdev(sizeof(struct el3_private));
183 lp = netdev_priv(dev);
187 spin_lock_init(&lp->lock);
188 link->io.NumPorts1 = 16;
189 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
190 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT;
191 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
192 link->irq.Handler = &el3_interrupt;
193 link->irq.Instance = dev;
194 link->conf.Attributes = CONF_ENABLE_IRQ;
195 link->conf.IntType = INT_MEMORY_AND_IO;
196 link->conf.ConfigIndex = 1;
198 /* The EL3-specific entries in the device structure. */
199 dev->hard_start_xmit = &el3_start_xmit;
200 dev->set_config = &el3_config;
201 dev->get_stats = &el3_get_stats;
202 dev->set_multicast_list = &set_multicast_list;
203 dev->open = &el3_open;
204 dev->stop = &el3_close;
205 #ifdef HAVE_TX_TIMEOUT
206 dev->tx_timeout = el3_tx_timeout;
207 dev->watchdog_timeo = TX_TIMEOUT;
209 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
211 return tc589_config(link);
214 /*======================================================================
216 This deletes a driver "instance". The device is de-registered
217 with Card Services. If it has been released, all local data
218 structures are freed. Otherwise, the structures will be freed
219 when the device is released.
221 ======================================================================*/
223 static void tc589_detach(struct pcmcia_device *link)
225 struct net_device *dev = link->priv;
227 DEBUG(0, "3c589_detach(0x%p)\n", link);
230 unregister_netdev(dev);
237 /*======================================================================
239 tc589_config() is scheduled to run after a CARD_INSERTION event
240 is received, to configure the PCMCIA socket, and to make the
241 ethernet device available to the system.
243 ======================================================================*/
245 #define CS_CHECK(fn, ret) \
246 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
248 static int tc589_config(struct pcmcia_device *link)
250 struct net_device *dev = link->priv;
251 struct el3_private *lp = netdev_priv(dev);
255 int last_fn, last_ret, i, j, multi = 0, fifo;
257 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
258 DECLARE_MAC_BUF(mac);
260 DEBUG(0, "3c589_config(0x%p)\n", link);
262 phys_addr = (__be16 *)dev->dev_addr;
263 tuple.Attributes = 0;
264 tuple.TupleData = (cisdata_t *)buf;
265 tuple.TupleDataMax = sizeof(buf);
266 tuple.TupleOffset = 0;
267 tuple.Attributes = TUPLE_RETURN_COMMON;
269 /* Is this a 3c562? */
270 if (link->manf_id != MANFID_3COM)
271 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
273 multi = (link->card_id == PRODID_3COM_3C562);
275 /* For the 3c562, the base address must be xx00-xx7f */
276 link->io.IOAddrLines = 16;
277 for (i = j = 0; j < 0x400; j += 0x10) {
278 if (multi && (j & 0x80)) continue;
279 link->io.BasePort1 = j ^ 0x300;
280 i = pcmcia_request_io(link, &link->io);
285 cs_error(link, RequestIO, i);
288 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
289 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
291 dev->irq = link->irq.AssignedIRQ;
292 dev->base_addr = link->io.BasePort1;
293 ioaddr = dev->base_addr;
296 /* The 3c589 has an extra EEPROM for configuration info, including
297 the hardware address. The 3c562 puts the address in the CIS. */
298 tuple.DesiredTuple = 0x88;
299 if (pcmcia_get_first_tuple(link, &tuple) == 0) {
300 pcmcia_get_tuple_data(link, &tuple);
301 for (i = 0; i < 3; i++)
302 phys_addr[i] = htons(le16_to_cpu(buf[i]));
304 for (i = 0; i < 3; i++)
305 phys_addr[i] = htons(read_eeprom(ioaddr, i));
306 if (phys_addr[0] == htons(0x6060)) {
307 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
308 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
313 /* The address and resource configuration register aren't loaded from
314 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
315 outw(0x3f00, ioaddr + 8);
318 /* The if_port symbol can be set when the module is loaded */
319 if ((if_port >= 0) && (if_port <= 3))
320 dev->if_port = if_port;
322 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
324 link->dev_node = &lp->node;
325 SET_NETDEV_DEV(dev, &handle_to_dev(link));
327 if (register_netdev(dev) != 0) {
328 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
329 link->dev_node = NULL;
333 strcpy(lp->node.dev_name, dev->name);
335 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, "
337 dev->name, (multi ? "562" : "589"), dev->base_addr, dev->irq,
338 print_mac(mac, dev->dev_addr));
339 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
340 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
341 if_names[dev->if_port]);
345 cs_error(link, last_fn, last_ret);
351 /*======================================================================
353 After a card is removed, tc589_release() will unregister the net
354 device, and release the PCMCIA configuration. If the device is
355 still open, this will be postponed until it is closed.
357 ======================================================================*/
359 static void tc589_release(struct pcmcia_device *link)
361 pcmcia_disable_device(link);
364 static int tc589_suspend(struct pcmcia_device *link)
366 struct net_device *dev = link->priv;
369 netif_device_detach(dev);
374 static int tc589_resume(struct pcmcia_device *link)
376 struct net_device *dev = link->priv;
380 netif_device_attach(dev);
386 /*====================================================================*/
389 Use this for commands that may take time to finish
391 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
394 outw(cmd, dev->base_addr + EL3_CMD);
396 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
398 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
403 Read a word from the EEPROM using the regular EEPROM access register.
404 Assume that we are in register window zero.
406 static u16 read_eeprom(unsigned int ioaddr, int index)
409 outw(EEPROM_READ + index, ioaddr + 10);
410 /* Reading the eeprom takes 162 us */
411 for (i = 1620; i >= 0; i--)
412 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
414 return inw(ioaddr + 12);
418 Set transceiver type, perhaps to something other than what the user
419 specified in dev->if_port.
421 static void tc589_set_xcvr(struct net_device *dev, int if_port)
423 struct el3_private *lp = netdev_priv(dev);
424 unsigned int ioaddr = dev->base_addr;
428 case 0: case 1: outw(0, ioaddr + 6); break;
429 case 2: outw(3<<14, ioaddr + 6); break;
430 case 3: outw(1<<14, ioaddr + 6); break;
432 /* On PCMCIA, this just turns on the LED */
433 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
434 /* 10baseT interface, enable link beat and jabber check. */
436 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
439 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
441 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
444 static void dump_status(struct net_device *dev)
446 unsigned int ioaddr = dev->base_addr;
448 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
449 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
450 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
451 inw(ioaddr+TX_FREE));
453 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
454 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
455 inw(ioaddr+0x08), inw(ioaddr+0x0a));
459 /* Reset and restore all of the 3c589 registers. */
460 static void tc589_reset(struct net_device *dev)
462 unsigned int ioaddr = dev->base_addr;
466 outw(0x0001, ioaddr + 4); /* Activate board. */
467 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
469 /* Set the station address in window 2. */
471 for (i = 0; i < 6; i++)
472 outb(dev->dev_addr[i], ioaddr + i);
474 tc589_set_xcvr(dev, dev->if_port);
476 /* Switch to the stats window, and clear all stats by reading. */
477 outw(StatsDisable, ioaddr + EL3_CMD);
479 for (i = 0; i < 9; i++)
484 /* Switch to register set 1 for normal use. */
487 /* Accept b-cast and phys addr only. */
488 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
489 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
490 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
491 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
492 /* Allow status bits to be seen. */
493 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
494 /* Ack all pending events, and set active indicator mask. */
495 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
497 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
498 | AdapterFailure, ioaddr + EL3_CMD);
501 static void netdev_get_drvinfo(struct net_device *dev,
502 struct ethtool_drvinfo *info)
504 strcpy(info->driver, DRV_NAME);
505 strcpy(info->version, DRV_VERSION);
506 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
510 static u32 netdev_get_msglevel(struct net_device *dev)
515 static void netdev_set_msglevel(struct net_device *dev, u32 level)
519 #endif /* PCMCIA_DEBUG */
521 static const struct ethtool_ops netdev_ethtool_ops = {
522 .get_drvinfo = netdev_get_drvinfo,
524 .get_msglevel = netdev_get_msglevel,
525 .set_msglevel = netdev_set_msglevel,
526 #endif /* PCMCIA_DEBUG */
529 static int el3_config(struct net_device *dev, struct ifmap *map)
531 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
532 if (map->port <= 3) {
533 dev->if_port = map->port;
534 printk(KERN_INFO "%s: switched to %s port\n",
535 dev->name, if_names[dev->if_port]);
536 tc589_set_xcvr(dev, dev->if_port);
543 static int el3_open(struct net_device *dev)
545 struct el3_private *lp = netdev_priv(dev);
546 struct pcmcia_device *link = lp->p_dev;
548 if (!pcmcia_dev_present(link))
552 netif_start_queue(dev);
555 init_timer(&lp->media);
556 lp->media.function = &media_check;
557 lp->media.data = (unsigned long) dev;
558 lp->media.expires = jiffies + HZ;
559 add_timer(&lp->media);
561 DEBUG(1, "%s: opened, status %4.4x.\n",
562 dev->name, inw(dev->base_addr + EL3_STATUS));
567 static void el3_tx_timeout(struct net_device *dev)
569 unsigned int ioaddr = dev->base_addr;
571 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
573 dev->stats.tx_errors++;
574 dev->trans_start = jiffies;
575 /* Issue TX_RESET and TX_START commands. */
576 tc589_wait_for_completion(dev, TxReset);
577 outw(TxEnable, ioaddr + EL3_CMD);
578 netif_wake_queue(dev);
581 static void pop_tx_status(struct net_device *dev)
583 unsigned int ioaddr = dev->base_addr;
586 /* Clear the Tx status stack. */
587 for (i = 32; i > 0; i--) {
588 u_char tx_status = inb(ioaddr + TX_STATUS);
589 if (!(tx_status & 0x84)) break;
590 /* reset transmitter on jabber error or underrun */
591 if (tx_status & 0x30)
592 tc589_wait_for_completion(dev, TxReset);
593 if (tx_status & 0x38) {
594 DEBUG(1, "%s: transmit error: status 0x%02x\n",
595 dev->name, tx_status);
596 outw(TxEnable, ioaddr + EL3_CMD);
597 dev->stats.tx_aborted_errors++;
599 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
603 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
605 unsigned int ioaddr = dev->base_addr;
606 struct el3_private *priv = netdev_priv(dev);
609 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
610 "status %4.4x.\n", dev->name, (long)skb->len,
611 inw(ioaddr + EL3_STATUS));
613 spin_lock_irqsave(&priv->lock, flags);
615 dev->stats.tx_bytes += skb->len;
617 /* Put out the doubleword header... */
618 outw(skb->len, ioaddr + TX_FIFO);
619 outw(0x00, ioaddr + TX_FIFO);
620 /* ... and the packet rounded to a doubleword. */
621 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
623 dev->trans_start = jiffies;
624 if (inw(ioaddr + TX_FREE) <= 1536) {
625 netif_stop_queue(dev);
626 /* Interrupt us when the FIFO has room for max-sized packet. */
627 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
631 spin_unlock_irqrestore(&priv->lock, flags);
637 /* The EL3 interrupt handler. */
638 static irqreturn_t el3_interrupt(int irq, void *dev_id)
640 struct net_device *dev = (struct net_device *) dev_id;
641 struct el3_private *lp = netdev_priv(dev);
644 int i = 0, handled = 1;
646 if (!netif_device_present(dev))
649 ioaddr = dev->base_addr;
651 DEBUG(3, "%s: interrupt, status %4.4x.\n",
652 dev->name, inw(ioaddr + EL3_STATUS));
654 spin_lock(&lp->lock);
655 while ((status = inw(ioaddr + EL3_STATUS)) &
656 (IntLatch | RxComplete | StatsFull)) {
657 if ((status & 0xe000) != 0x2000) {
658 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
663 if (status & RxComplete)
666 if (status & TxAvailable) {
667 DEBUG(3, " TX room bit was handled.\n");
668 /* There's room in the FIFO for a full-sized packet. */
669 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
670 netif_wake_queue(dev);
673 if (status & TxComplete)
676 if (status & (AdapterFailure | RxEarly | StatsFull)) {
677 /* Handle all uncommon interrupts. */
678 if (status & StatsFull) /* Empty statistics. */
680 if (status & RxEarly) { /* Rx early is unused. */
682 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
684 if (status & AdapterFailure) {
687 fifo_diag = inw(ioaddr + 4);
689 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
690 " register %04x.\n", dev->name, fifo_diag);
691 if (fifo_diag & 0x0400) {
693 tc589_wait_for_completion(dev, TxReset);
694 outw(TxEnable, ioaddr + EL3_CMD);
696 if (fifo_diag & 0x2000) {
698 tc589_wait_for_completion(dev, RxReset);
699 set_multicast_list(dev);
700 outw(RxEnable, ioaddr + EL3_CMD);
702 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
707 printk(KERN_ERR "%s: infinite loop in interrupt, "
708 "status %4.4x.\n", dev->name, status);
709 /* Clear all interrupts */
710 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
713 /* Acknowledge the IRQ. */
714 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
717 lp->last_irq = jiffies;
718 spin_unlock(&lp->lock);
719 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
720 dev->name, inw(ioaddr + EL3_STATUS));
721 return IRQ_RETVAL(handled);
724 static void media_check(unsigned long arg)
726 struct net_device *dev = (struct net_device *)(arg);
727 struct el3_private *lp = netdev_priv(dev);
728 unsigned int ioaddr = dev->base_addr;
732 if (!netif_device_present(dev)) goto reschedule;
734 /* Check for pending interrupt with expired latency timer: with
735 this, we can limp along even if the interrupt is blocked */
736 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
737 (inb(ioaddr + EL3_TIMER) == 0xff)) {
739 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
740 el3_interrupt(dev->irq, dev);
745 lp->media.expires = jiffies + HZ/100;
746 add_timer(&lp->media);
750 /* lp->lock guards the EL3 window. Window should always be 1 except
751 when the lock is held */
752 spin_lock_irqsave(&lp->lock, flags);
754 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
756 /* Ignore collisions unless we've had no irq's recently */
757 if (time_before(jiffies, lp->last_irq + HZ)) {
760 /* Try harder to detect carrier errors */
762 outw(StatsDisable, ioaddr + EL3_CMD);
763 errs = inb(ioaddr + 0);
764 outw(StatsEnable, ioaddr + EL3_CMD);
765 dev->stats.tx_carrier_errors += errs;
766 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
769 if (media != lp->media_status) {
770 if ((media & lp->media_status & 0x8000) &&
771 ((lp->media_status ^ media) & 0x0800))
772 printk(KERN_INFO "%s: %s link beat\n", dev->name,
773 (lp->media_status & 0x0800 ? "lost" : "found"));
774 else if ((media & lp->media_status & 0x4000) &&
775 ((lp->media_status ^ media) & 0x0010))
776 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
777 (lp->media_status & 0x0010 ? "ok" : "problem"));
778 if (dev->if_port == 0) {
779 if (media & 0x8000) {
781 printk(KERN_INFO "%s: flipped to 10baseT\n",
784 tc589_set_xcvr(dev, 2);
785 } else if (media & 0x4000) {
787 tc589_set_xcvr(dev, 1);
789 printk(KERN_INFO "%s: flipped to 10base2\n",
793 lp->media_status = media;
797 spin_unlock_irqrestore(&lp->lock, flags);
800 lp->media.expires = jiffies + HZ;
801 add_timer(&lp->media);
804 static struct net_device_stats *el3_get_stats(struct net_device *dev)
806 struct el3_private *lp = netdev_priv(dev);
808 struct pcmcia_device *link = lp->p_dev;
810 if (pcmcia_dev_present(link)) {
811 spin_lock_irqsave(&lp->lock, flags);
813 spin_unlock_irqrestore(&lp->lock, flags);
819 Update statistics. We change to register window 6, so this should be run
820 single-threaded if the device is active. This is expected to be a rare
821 operation, and it's simpler for the rest of the driver to assume that
822 window 1 is always valid rather than use a special window-state variable.
824 Caller must hold the lock for this
826 static void update_stats(struct net_device *dev)
828 unsigned int ioaddr = dev->base_addr;
830 DEBUG(2, "%s: updating the statistics.\n", dev->name);
831 /* Turn off statistics updates while reading. */
832 outw(StatsDisable, ioaddr + EL3_CMD);
833 /* Switch to the stats window, and read everything. */
835 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
836 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
837 /* Multiple collisions. */ inb(ioaddr + 2);
838 dev->stats.collisions += inb(ioaddr + 3);
839 dev->stats.tx_window_errors += inb(ioaddr + 4);
840 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
841 dev->stats.tx_packets += inb(ioaddr + 6);
842 /* Rx packets */ inb(ioaddr + 7);
843 /* Tx deferrals */ inb(ioaddr + 8);
844 /* Rx octets */ inw(ioaddr + 10);
845 /* Tx octets */ inw(ioaddr + 12);
847 /* Back to window 1, and turn statistics back on. */
849 outw(StatsEnable, ioaddr + EL3_CMD);
852 static int el3_rx(struct net_device *dev)
854 unsigned int ioaddr = dev->base_addr;
858 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
859 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
860 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
861 (--worklimit >= 0)) {
862 if (rx_status & 0x4000) { /* Error, update stats. */
863 short error = rx_status & 0x3800;
864 dev->stats.rx_errors++;
866 case 0x0000: dev->stats.rx_over_errors++; break;
867 case 0x0800: dev->stats.rx_length_errors++; break;
868 case 0x1000: dev->stats.rx_frame_errors++; break;
869 case 0x1800: dev->stats.rx_length_errors++; break;
870 case 0x2000: dev->stats.rx_frame_errors++; break;
871 case 0x2800: dev->stats.rx_crc_errors++; break;
874 short pkt_len = rx_status & 0x7ff;
877 skb = dev_alloc_skb(pkt_len+5);
879 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
883 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
885 skb->protocol = eth_type_trans(skb, dev);
887 dev->last_rx = jiffies;
888 dev->stats.rx_packets++;
889 dev->stats.rx_bytes += pkt_len;
891 DEBUG(1, "%s: couldn't allocate a sk_buff of"
892 " size %d.\n", dev->name, pkt_len);
893 dev->stats.rx_dropped++;
896 /* Pop the top of the Rx FIFO */
897 tc589_wait_for_completion(dev, RxDiscard);
900 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
904 static void set_multicast_list(struct net_device *dev)
906 struct el3_private *lp = netdev_priv(dev);
907 struct pcmcia_device *link = lp->p_dev;
908 unsigned int ioaddr = dev->base_addr;
909 u16 opts = SetRxFilter | RxStation | RxBroadcast;
911 if (!pcmcia_dev_present(link)) return;
912 if (dev->flags & IFF_PROMISC)
913 opts |= RxMulticast | RxProm;
914 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
916 outw(opts, ioaddr + EL3_CMD);
919 static int el3_close(struct net_device *dev)
921 struct el3_private *lp = netdev_priv(dev);
922 struct pcmcia_device *link = lp->p_dev;
923 unsigned int ioaddr = dev->base_addr;
925 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
927 if (pcmcia_dev_present(link)) {
928 /* Turn off statistics ASAP. We update dev->stats below. */
929 outw(StatsDisable, ioaddr + EL3_CMD);
931 /* Disable the receiver and transmitter. */
932 outw(RxDisable, ioaddr + EL3_CMD);
933 outw(TxDisable, ioaddr + EL3_CMD);
935 if (dev->if_port == 2)
936 /* Turn off thinnet power. Green! */
937 outw(StopCoax, ioaddr + EL3_CMD);
938 else if (dev->if_port == 1) {
939 /* Disable link beat and jabber */
941 outw(0, ioaddr + WN4_MEDIA);
944 /* Switching back to window 0 disables the IRQ. */
946 /* But we explicitly zero the IRQ line select anyway. */
947 outw(0x0f00, ioaddr + WN0_IRQ);
949 /* Check if the card still exists */
950 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
955 netif_stop_queue(dev);
956 del_timer_sync(&lp->media);
961 static struct pcmcia_device_id tc589_ids[] = {
962 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
963 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
964 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
965 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
966 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
967 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
970 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
972 static struct pcmcia_driver tc589_driver = {
973 .owner = THIS_MODULE,
977 .probe = tc589_probe,
978 .remove = tc589_detach,
979 .id_table = tc589_ids,
980 .suspend = tc589_suspend,
981 .resume = tc589_resume,
984 static int __init init_tc589(void)
986 return pcmcia_register_driver(&tc589_driver);
989 static void __exit exit_tc589(void)
991 pcmcia_unregister_driver(&tc589_driver);
994 module_init(init_tc589);
995 module_exit(exit_tc589);