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@redhat.com>
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 struct net_device_stats stats;
111 /* For transceiver monitoring */
112 struct timer_list media;
115 unsigned long last_irq;
119 static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" };
121 /*====================================================================*/
123 /* Module parameters */
125 MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>");
126 MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver");
127 MODULE_LICENSE("GPL");
129 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0)
131 /* Special hook for setting if_port when module is loaded */
132 INT_MODULE_PARM(if_port, 0);
135 INT_MODULE_PARM(pc_debug, PCMCIA_DEBUG);
136 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
137 static char *version =
138 DRV_NAME ".c " DRV_VERSION " 2001/10/13 00:08:50 (David Hinds)";
140 #define DEBUG(n, args...)
143 /*====================================================================*/
145 static int tc589_config(struct pcmcia_device *link);
146 static void tc589_release(struct pcmcia_device *link);
148 static u16 read_eeprom(kio_addr_t ioaddr, int index);
149 static void tc589_reset(struct net_device *dev);
150 static void media_check(unsigned long arg);
151 static int el3_config(struct net_device *dev, struct ifmap *map);
152 static int el3_open(struct net_device *dev);
153 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
154 static irqreturn_t el3_interrupt(int irq, void *dev_id);
155 static void update_stats(struct net_device *dev);
156 static struct net_device_stats *el3_get_stats(struct net_device *dev);
157 static int el3_rx(struct net_device *dev);
158 static int el3_close(struct net_device *dev);
159 static void el3_tx_timeout(struct net_device *dev);
160 static void set_multicast_list(struct net_device *dev);
161 static const struct ethtool_ops netdev_ethtool_ops;
163 static void tc589_detach(struct pcmcia_device *p_dev);
165 /*======================================================================
167 tc589_attach() creates an "instance" of the driver, allocating
168 local data structures for one device. The device is registered
171 ======================================================================*/
173 static int tc589_probe(struct pcmcia_device *link)
175 struct el3_private *lp;
176 struct net_device *dev;
178 DEBUG(0, "3c589_attach()\n");
180 /* Create new ethernet device */
181 dev = alloc_etherdev(sizeof(struct el3_private));
184 lp = netdev_priv(dev);
188 spin_lock_init(&lp->lock);
189 link->io.NumPorts1 = 16;
190 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
191 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
192 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
193 link->irq.Handler = &el3_interrupt;
194 link->irq.Instance = dev;
195 link->conf.Attributes = CONF_ENABLE_IRQ;
196 link->conf.IntType = INT_MEMORY_AND_IO;
197 link->conf.ConfigIndex = 1;
199 /* The EL3-specific entries in the device structure. */
200 SET_MODULE_OWNER(dev);
201 dev->hard_start_xmit = &el3_start_xmit;
202 dev->set_config = &el3_config;
203 dev->get_stats = &el3_get_stats;
204 dev->set_multicast_list = &set_multicast_list;
205 dev->open = &el3_open;
206 dev->stop = &el3_close;
207 #ifdef HAVE_TX_TIMEOUT
208 dev->tx_timeout = el3_tx_timeout;
209 dev->watchdog_timeo = TX_TIMEOUT;
211 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
213 return tc589_config(link);
216 /*======================================================================
218 This deletes a driver "instance". The device is de-registered
219 with Card Services. If it has been released, all local data
220 structures are freed. Otherwise, the structures will be freed
221 when the device is released.
223 ======================================================================*/
225 static void tc589_detach(struct pcmcia_device *link)
227 struct net_device *dev = link->priv;
229 DEBUG(0, "3c589_detach(0x%p)\n", link);
232 unregister_netdev(dev);
239 /*======================================================================
241 tc589_config() is scheduled to run after a CARD_INSERTION event
242 is received, to configure the PCMCIA socket, and to make the
243 ethernet device available to the system.
245 ======================================================================*/
247 #define CS_CHECK(fn, ret) \
248 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
250 static int tc589_config(struct pcmcia_device *link)
252 struct net_device *dev = link->priv;
253 struct el3_private *lp = netdev_priv(dev);
255 u16 buf[32], *phys_addr;
256 int last_fn, last_ret, i, j, multi = 0, fifo;
258 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
260 DEBUG(0, "3c589_config(0x%p)\n", link);
262 phys_addr = (u16 *)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);
281 if (i == CS_SUCCESS) break;
283 if (i != CS_SUCCESS) {
284 cs_error(link, RequestIO, i);
287 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
288 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
290 dev->irq = link->irq.AssignedIRQ;
291 dev->base_addr = link->io.BasePort1;
292 ioaddr = dev->base_addr;
295 /* The 3c589 has an extra EEPROM for configuration info, including
296 the hardware address. The 3c562 puts the address in the CIS. */
297 tuple.DesiredTuple = 0x88;
298 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
299 pcmcia_get_tuple_data(link, &tuple);
300 for (i = 0; i < 3; i++)
301 phys_addr[i] = htons(buf[i]);
303 for (i = 0; i < 3; i++)
304 phys_addr[i] = htons(read_eeprom(ioaddr, i));
305 if (phys_addr[0] == 0x6060) {
306 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
307 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
312 /* The address and resource configuration register aren't loaded from
313 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
314 outw(0x3f00, ioaddr + 8);
317 /* The if_port symbol can be set when the module is loaded */
318 if ((if_port >= 0) && (if_port <= 3))
319 dev->if_port = if_port;
321 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
323 link->dev_node = &lp->node;
324 SET_NETDEV_DEV(dev, &handle_to_dev(link));
326 if (register_netdev(dev) != 0) {
327 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
328 link->dev_node = NULL;
332 strcpy(lp->node.dev_name, dev->name);
334 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
335 dev->name, (multi ? "562" : "589"), dev->base_addr,
337 for (i = 0; i < 6; i++)
338 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
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(kio_addr_t 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 kio_addr_t 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 kio_addr_t 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 kio_addr_t 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 struct el3_private *lp = netdev_priv(dev);
570 kio_addr_t ioaddr = dev->base_addr;
572 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
574 lp->stats.tx_errors++;
575 dev->trans_start = jiffies;
576 /* Issue TX_RESET and TX_START commands. */
577 tc589_wait_for_completion(dev, TxReset);
578 outw(TxEnable, ioaddr + EL3_CMD);
579 netif_wake_queue(dev);
582 static void pop_tx_status(struct net_device *dev)
584 struct el3_private *lp = netdev_priv(dev);
585 kio_addr_t ioaddr = dev->base_addr;
588 /* Clear the Tx status stack. */
589 for (i = 32; i > 0; i--) {
590 u_char tx_status = inb(ioaddr + TX_STATUS);
591 if (!(tx_status & 0x84)) break;
592 /* reset transmitter on jabber error or underrun */
593 if (tx_status & 0x30)
594 tc589_wait_for_completion(dev, TxReset);
595 if (tx_status & 0x38) {
596 DEBUG(1, "%s: transmit error: status 0x%02x\n",
597 dev->name, tx_status);
598 outw(TxEnable, ioaddr + EL3_CMD);
599 lp->stats.tx_aborted_errors++;
601 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
605 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
607 kio_addr_t ioaddr = dev->base_addr;
608 struct el3_private *priv = netdev_priv(dev);
610 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
611 "status %4.4x.\n", dev->name, (long)skb->len,
612 inw(ioaddr + EL3_STATUS));
614 priv->stats.tx_bytes += skb->len;
616 /* Put out the doubleword header... */
617 outw(skb->len, ioaddr + TX_FIFO);
618 outw(0x00, ioaddr + TX_FIFO);
619 /* ... and the packet rounded to a doubleword. */
620 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
622 dev->trans_start = jiffies;
623 if (inw(ioaddr + TX_FREE) <= 1536) {
624 netif_stop_queue(dev);
625 /* Interrupt us when the FIFO has room for max-sized packet. */
626 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
635 /* The EL3 interrupt handler. */
636 static irqreturn_t el3_interrupt(int irq, void *dev_id)
638 struct net_device *dev = (struct net_device *) dev_id;
639 struct el3_private *lp = netdev_priv(dev);
642 int i = 0, handled = 1;
644 if (!netif_device_present(dev))
647 ioaddr = dev->base_addr;
649 DEBUG(3, "%s: interrupt, status %4.4x.\n",
650 dev->name, inw(ioaddr + EL3_STATUS));
652 spin_lock(&lp->lock);
653 while ((status = inw(ioaddr + EL3_STATUS)) &
654 (IntLatch | RxComplete | StatsFull)) {
655 if ((status & 0xe000) != 0x2000) {
656 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
661 if (status & RxComplete)
664 if (status & TxAvailable) {
665 DEBUG(3, " TX room bit was handled.\n");
666 /* There's room in the FIFO for a full-sized packet. */
667 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
668 netif_wake_queue(dev);
671 if (status & TxComplete)
674 if (status & (AdapterFailure | RxEarly | StatsFull)) {
675 /* Handle all uncommon interrupts. */
676 if (status & StatsFull) /* Empty statistics. */
678 if (status & RxEarly) { /* Rx early is unused. */
680 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
682 if (status & AdapterFailure) {
685 fifo_diag = inw(ioaddr + 4);
687 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
688 " register %04x.\n", dev->name, fifo_diag);
689 if (fifo_diag & 0x0400) {
691 tc589_wait_for_completion(dev, TxReset);
692 outw(TxEnable, ioaddr + EL3_CMD);
694 if (fifo_diag & 0x2000) {
696 tc589_wait_for_completion(dev, RxReset);
697 set_multicast_list(dev);
698 outw(RxEnable, ioaddr + EL3_CMD);
700 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
705 printk(KERN_ERR "%s: infinite loop in interrupt, "
706 "status %4.4x.\n", dev->name, status);
707 /* Clear all interrupts */
708 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
711 /* Acknowledge the IRQ. */
712 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
715 lp->last_irq = jiffies;
716 spin_unlock(&lp->lock);
717 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
718 dev->name, inw(ioaddr + EL3_STATUS));
719 return IRQ_RETVAL(handled);
722 static void media_check(unsigned long arg)
724 struct net_device *dev = (struct net_device *)(arg);
725 struct el3_private *lp = netdev_priv(dev);
726 kio_addr_t ioaddr = dev->base_addr;
730 if (!netif_device_present(dev)) goto reschedule;
733 /* Check for pending interrupt with expired latency timer: with
734 this, we can limp along even if the interrupt is blocked */
735 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
736 (inb(ioaddr + EL3_TIMER) == 0xff)) {
738 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
739 el3_interrupt(dev->irq, lp);
744 lp->media.expires = jiffies + HZ/100;
745 add_timer(&lp->media);
749 /* lp->lock guards the EL3 window. Window should always be 1 except
750 when the lock is held */
751 spin_lock_irqsave(&lp->lock, flags);
753 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
755 /* Ignore collisions unless we've had no irq's recently */
756 if (time_before(jiffies, lp->last_irq + HZ)) {
759 /* Try harder to detect carrier errors */
761 outw(StatsDisable, ioaddr + EL3_CMD);
762 errs = inb(ioaddr + 0);
763 outw(StatsEnable, ioaddr + EL3_CMD);
764 lp->stats.tx_carrier_errors += errs;
765 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
768 if (media != lp->media_status) {
769 if ((media & lp->media_status & 0x8000) &&
770 ((lp->media_status ^ media) & 0x0800))
771 printk(KERN_INFO "%s: %s link beat\n", dev->name,
772 (lp->media_status & 0x0800 ? "lost" : "found"));
773 else if ((media & lp->media_status & 0x4000) &&
774 ((lp->media_status ^ media) & 0x0010))
775 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
776 (lp->media_status & 0x0010 ? "ok" : "problem"));
777 if (dev->if_port == 0) {
778 if (media & 0x8000) {
780 printk(KERN_INFO "%s: flipped to 10baseT\n",
783 tc589_set_xcvr(dev, 2);
784 } else if (media & 0x4000) {
786 tc589_set_xcvr(dev, 1);
788 printk(KERN_INFO "%s: flipped to 10base2\n",
792 lp->media_status = media;
796 spin_unlock_irqrestore(&lp->lock, flags);
799 lp->media.expires = jiffies + HZ;
800 add_timer(&lp->media);
803 static struct net_device_stats *el3_get_stats(struct net_device *dev)
805 struct el3_private *lp = netdev_priv(dev);
807 struct pcmcia_device *link = lp->p_dev;
809 if (pcmcia_dev_present(link)) {
810 spin_lock_irqsave(&lp->lock, flags);
812 spin_unlock_irqrestore(&lp->lock, flags);
818 Update statistics. We change to register window 6, so this should be run
819 single-threaded if the device is active. This is expected to be a rare
820 operation, and it's simpler for the rest of the driver to assume that
821 window 1 is always valid rather than use a special window-state variable.
823 Caller must hold the lock for this
825 static void update_stats(struct net_device *dev)
827 struct el3_private *lp = netdev_priv(dev);
828 kio_addr_t 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 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
836 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
837 /* Multiple collisions. */ inb(ioaddr + 2);
838 lp->stats.collisions += inb(ioaddr + 3);
839 lp->stats.tx_window_errors += inb(ioaddr + 4);
840 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
841 lp->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 struct el3_private *lp = netdev_priv(dev);
855 kio_addr_t ioaddr = dev->base_addr;
859 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
860 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
861 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
862 (--worklimit >= 0)) {
863 if (rx_status & 0x4000) { /* Error, update stats. */
864 short error = rx_status & 0x3800;
865 lp->stats.rx_errors++;
867 case 0x0000: lp->stats.rx_over_errors++; break;
868 case 0x0800: lp->stats.rx_length_errors++; break;
869 case 0x1000: lp->stats.rx_frame_errors++; break;
870 case 0x1800: lp->stats.rx_length_errors++; break;
871 case 0x2000: lp->stats.rx_frame_errors++; break;
872 case 0x2800: lp->stats.rx_crc_errors++; break;
875 short pkt_len = rx_status & 0x7ff;
878 skb = dev_alloc_skb(pkt_len+5);
880 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
885 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
887 skb->protocol = eth_type_trans(skb, dev);
889 dev->last_rx = jiffies;
890 lp->stats.rx_packets++;
891 lp->stats.rx_bytes += pkt_len;
893 DEBUG(1, "%s: couldn't allocate a sk_buff of"
894 " size %d.\n", dev->name, pkt_len);
895 lp->stats.rx_dropped++;
898 /* Pop the top of the Rx FIFO */
899 tc589_wait_for_completion(dev, RxDiscard);
902 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
906 static void set_multicast_list(struct net_device *dev)
908 struct el3_private *lp = netdev_priv(dev);
909 struct pcmcia_device *link = lp->p_dev;
910 kio_addr_t ioaddr = dev->base_addr;
911 u16 opts = SetRxFilter | RxStation | RxBroadcast;
913 if (!pcmcia_dev_present(link)) return;
914 if (dev->flags & IFF_PROMISC)
915 opts |= RxMulticast | RxProm;
916 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
918 outw(opts, ioaddr + EL3_CMD);
921 static int el3_close(struct net_device *dev)
923 struct el3_private *lp = netdev_priv(dev);
924 struct pcmcia_device *link = lp->p_dev;
925 kio_addr_t ioaddr = dev->base_addr;
927 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
929 if (pcmcia_dev_present(link)) {
930 /* Turn off statistics ASAP. We update lp->stats below. */
931 outw(StatsDisable, ioaddr + EL3_CMD);
933 /* Disable the receiver and transmitter. */
934 outw(RxDisable, ioaddr + EL3_CMD);
935 outw(TxDisable, ioaddr + EL3_CMD);
937 if (dev->if_port == 2)
938 /* Turn off thinnet power. Green! */
939 outw(StopCoax, ioaddr + EL3_CMD);
940 else if (dev->if_port == 1) {
941 /* Disable link beat and jabber */
943 outw(0, ioaddr + WN4_MEDIA);
946 /* Switching back to window 0 disables the IRQ. */
948 /* But we explicitly zero the IRQ line select anyway. */
949 outw(0x0f00, ioaddr + WN0_IRQ);
951 /* Check if the card still exists */
952 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
957 netif_stop_queue(dev);
958 del_timer_sync(&lp->media);
963 static struct pcmcia_device_id tc589_ids[] = {
964 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
965 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
966 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
967 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
968 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
969 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
972 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
974 static struct pcmcia_driver tc589_driver = {
975 .owner = THIS_MODULE,
979 .probe = tc589_probe,
980 .remove = tc589_detach,
981 .id_table = tc589_ids,
982 .suspend = tc589_suspend,
983 .resume = tc589_resume,
986 static int __init init_tc589(void)
988 return pcmcia_register_driver(&tc589_driver);
991 static void __exit exit_tc589(void)
993 pcmcia_unregister_driver(&tc589_driver);
996 module_init(init_tc589);
997 module_exit(exit_tc589);