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 const struct net_device_ops el3_netdev_ops = {
173 .ndo_open = el3_open,
174 .ndo_stop = el3_close,
175 .ndo_start_xmit = el3_start_xmit,
176 .ndo_tx_timeout = el3_tx_timeout,
177 .ndo_set_config = el3_config,
178 .ndo_get_stats = el3_get_stats,
179 .ndo_set_multicast_list = set_multicast_list,
180 .ndo_change_mtu = eth_change_mtu,
181 .ndo_set_mac_address = eth_mac_addr,
182 .ndo_validate_addr = eth_validate_addr,
185 static int tc589_probe(struct pcmcia_device *link)
187 struct el3_private *lp;
188 struct net_device *dev;
190 DEBUG(0, "3c589_attach()\n");
192 /* Create new ethernet device */
193 dev = alloc_etherdev(sizeof(struct el3_private));
196 lp = netdev_priv(dev);
200 spin_lock_init(&lp->lock);
201 link->io.NumPorts1 = 16;
202 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
203 link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_HANDLE_PRESENT;
204 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
205 link->irq.Handler = &el3_interrupt;
206 link->irq.Instance = dev;
207 link->conf.Attributes = CONF_ENABLE_IRQ;
208 link->conf.IntType = INT_MEMORY_AND_IO;
209 link->conf.ConfigIndex = 1;
211 dev->netdev_ops = &el3_netdev_ops;
212 dev->watchdog_timeo = TX_TIMEOUT;
214 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
216 return tc589_config(link);
219 /*======================================================================
221 This deletes a driver "instance". The device is de-registered
222 with Card Services. If it has been released, all local data
223 structures are freed. Otherwise, the structures will be freed
224 when the device is released.
226 ======================================================================*/
228 static void tc589_detach(struct pcmcia_device *link)
230 struct net_device *dev = link->priv;
232 DEBUG(0, "3c589_detach(0x%p)\n", link);
235 unregister_netdev(dev);
242 /*======================================================================
244 tc589_config() is scheduled to run after a CARD_INSERTION event
245 is received, to configure the PCMCIA socket, and to make the
246 ethernet device available to the system.
248 ======================================================================*/
250 #define CS_CHECK(fn, ret) \
251 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
253 static int tc589_config(struct pcmcia_device *link)
255 struct net_device *dev = link->priv;
256 struct el3_private *lp = netdev_priv(dev);
260 int last_fn, last_ret, i, j, multi = 0, fifo;
262 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
264 DEBUG(0, "3c589_config(0x%p)\n", link);
266 phys_addr = (__be16 *)dev->dev_addr;
267 tuple.Attributes = 0;
268 tuple.TupleData = (cisdata_t *)buf;
269 tuple.TupleDataMax = sizeof(buf);
270 tuple.TupleOffset = 0;
271 tuple.Attributes = TUPLE_RETURN_COMMON;
273 /* Is this a 3c562? */
274 if (link->manf_id != MANFID_3COM)
275 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
277 multi = (link->card_id == PRODID_3COM_3C562);
279 /* For the 3c562, the base address must be xx00-xx7f */
280 link->io.IOAddrLines = 16;
281 for (i = j = 0; j < 0x400; j += 0x10) {
282 if (multi && (j & 0x80)) continue;
283 link->io.BasePort1 = j ^ 0x300;
284 i = pcmcia_request_io(link, &link->io);
289 cs_error(link, RequestIO, i);
292 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
293 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
295 dev->irq = link->irq.AssignedIRQ;
296 dev->base_addr = link->io.BasePort1;
297 ioaddr = dev->base_addr;
300 /* The 3c589 has an extra EEPROM for configuration info, including
301 the hardware address. The 3c562 puts the address in the CIS. */
302 tuple.DesiredTuple = 0x88;
303 if (pcmcia_get_first_tuple(link, &tuple) == 0) {
304 pcmcia_get_tuple_data(link, &tuple);
305 for (i = 0; i < 3; i++)
306 phys_addr[i] = htons(le16_to_cpu(buf[i]));
308 for (i = 0; i < 3; i++)
309 phys_addr[i] = htons(read_eeprom(ioaddr, i));
310 if (phys_addr[0] == htons(0x6060)) {
311 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
312 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
317 /* The address and resource configuration register aren't loaded from
318 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
319 outw(0x3f00, ioaddr + 8);
322 /* The if_port symbol can be set when the module is loaded */
323 if ((if_port >= 0) && (if_port <= 3))
324 dev->if_port = if_port;
326 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
328 link->dev_node = &lp->node;
329 SET_NETDEV_DEV(dev, &handle_to_dev(link));
331 if (register_netdev(dev) != 0) {
332 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
333 link->dev_node = NULL;
337 strcpy(lp->node.dev_name, dev->name);
339 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, "
341 dev->name, (multi ? "562" : "589"), dev->base_addr, dev->irq,
343 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
344 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
345 if_names[dev->if_port]);
349 cs_error(link, last_fn, last_ret);
355 /*======================================================================
357 After a card is removed, tc589_release() will unregister the net
358 device, and release the PCMCIA configuration. If the device is
359 still open, this will be postponed until it is closed.
361 ======================================================================*/
363 static void tc589_release(struct pcmcia_device *link)
365 pcmcia_disable_device(link);
368 static int tc589_suspend(struct pcmcia_device *link)
370 struct net_device *dev = link->priv;
373 netif_device_detach(dev);
378 static int tc589_resume(struct pcmcia_device *link)
380 struct net_device *dev = link->priv;
384 netif_device_attach(dev);
390 /*====================================================================*/
393 Use this for commands that may take time to finish
395 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
398 outw(cmd, dev->base_addr + EL3_CMD);
400 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
402 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
407 Read a word from the EEPROM using the regular EEPROM access register.
408 Assume that we are in register window zero.
410 static u16 read_eeprom(unsigned int ioaddr, int index)
413 outw(EEPROM_READ + index, ioaddr + 10);
414 /* Reading the eeprom takes 162 us */
415 for (i = 1620; i >= 0; i--)
416 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
418 return inw(ioaddr + 12);
422 Set transceiver type, perhaps to something other than what the user
423 specified in dev->if_port.
425 static void tc589_set_xcvr(struct net_device *dev, int if_port)
427 struct el3_private *lp = netdev_priv(dev);
428 unsigned int ioaddr = dev->base_addr;
432 case 0: case 1: outw(0, ioaddr + 6); break;
433 case 2: outw(3<<14, ioaddr + 6); break;
434 case 3: outw(1<<14, ioaddr + 6); break;
436 /* On PCMCIA, this just turns on the LED */
437 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
438 /* 10baseT interface, enable link beat and jabber check. */
440 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
443 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
445 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
448 static void dump_status(struct net_device *dev)
450 unsigned int ioaddr = dev->base_addr;
452 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
453 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
454 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
455 inw(ioaddr+TX_FREE));
457 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
458 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
459 inw(ioaddr+0x08), inw(ioaddr+0x0a));
463 /* Reset and restore all of the 3c589 registers. */
464 static void tc589_reset(struct net_device *dev)
466 unsigned int ioaddr = dev->base_addr;
470 outw(0x0001, ioaddr + 4); /* Activate board. */
471 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
473 /* Set the station address in window 2. */
475 for (i = 0; i < 6; i++)
476 outb(dev->dev_addr[i], ioaddr + i);
478 tc589_set_xcvr(dev, dev->if_port);
480 /* Switch to the stats window, and clear all stats by reading. */
481 outw(StatsDisable, ioaddr + EL3_CMD);
483 for (i = 0; i < 9; i++)
488 /* Switch to register set 1 for normal use. */
491 /* Accept b-cast and phys addr only. */
492 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
493 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
494 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
495 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
496 /* Allow status bits to be seen. */
497 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
498 /* Ack all pending events, and set active indicator mask. */
499 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
501 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
502 | AdapterFailure, ioaddr + EL3_CMD);
505 static void netdev_get_drvinfo(struct net_device *dev,
506 struct ethtool_drvinfo *info)
508 strcpy(info->driver, DRV_NAME);
509 strcpy(info->version, DRV_VERSION);
510 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
514 static u32 netdev_get_msglevel(struct net_device *dev)
519 static void netdev_set_msglevel(struct net_device *dev, u32 level)
523 #endif /* PCMCIA_DEBUG */
525 static const struct ethtool_ops netdev_ethtool_ops = {
526 .get_drvinfo = netdev_get_drvinfo,
528 .get_msglevel = netdev_get_msglevel,
529 .set_msglevel = netdev_set_msglevel,
530 #endif /* PCMCIA_DEBUG */
533 static int el3_config(struct net_device *dev, struct ifmap *map)
535 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
536 if (map->port <= 3) {
537 dev->if_port = map->port;
538 printk(KERN_INFO "%s: switched to %s port\n",
539 dev->name, if_names[dev->if_port]);
540 tc589_set_xcvr(dev, dev->if_port);
547 static int el3_open(struct net_device *dev)
549 struct el3_private *lp = netdev_priv(dev);
550 struct pcmcia_device *link = lp->p_dev;
552 if (!pcmcia_dev_present(link))
556 netif_start_queue(dev);
559 init_timer(&lp->media);
560 lp->media.function = &media_check;
561 lp->media.data = (unsigned long) dev;
562 lp->media.expires = jiffies + HZ;
563 add_timer(&lp->media);
565 DEBUG(1, "%s: opened, status %4.4x.\n",
566 dev->name, inw(dev->base_addr + EL3_STATUS));
571 static void el3_tx_timeout(struct net_device *dev)
573 unsigned int ioaddr = dev->base_addr;
575 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
577 dev->stats.tx_errors++;
578 dev->trans_start = jiffies;
579 /* Issue TX_RESET and TX_START commands. */
580 tc589_wait_for_completion(dev, TxReset);
581 outw(TxEnable, ioaddr + EL3_CMD);
582 netif_wake_queue(dev);
585 static void pop_tx_status(struct net_device *dev)
587 unsigned int ioaddr = dev->base_addr;
590 /* Clear the Tx status stack. */
591 for (i = 32; i > 0; i--) {
592 u_char tx_status = inb(ioaddr + TX_STATUS);
593 if (!(tx_status & 0x84)) break;
594 /* reset transmitter on jabber error or underrun */
595 if (tx_status & 0x30)
596 tc589_wait_for_completion(dev, TxReset);
597 if (tx_status & 0x38) {
598 DEBUG(1, "%s: transmit error: status 0x%02x\n",
599 dev->name, tx_status);
600 outw(TxEnable, ioaddr + EL3_CMD);
601 dev->stats.tx_aborted_errors++;
603 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
607 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
609 unsigned int ioaddr = dev->base_addr;
610 struct el3_private *priv = netdev_priv(dev);
613 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
614 "status %4.4x.\n", dev->name, (long)skb->len,
615 inw(ioaddr + EL3_STATUS));
617 spin_lock_irqsave(&priv->lock, flags);
619 dev->stats.tx_bytes += skb->len;
621 /* Put out the doubleword header... */
622 outw(skb->len, ioaddr + TX_FIFO);
623 outw(0x00, ioaddr + TX_FIFO);
624 /* ... and the packet rounded to a doubleword. */
625 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
627 dev->trans_start = jiffies;
628 if (inw(ioaddr + TX_FREE) <= 1536) {
629 netif_stop_queue(dev);
630 /* Interrupt us when the FIFO has room for max-sized packet. */
631 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
635 spin_unlock_irqrestore(&priv->lock, flags);
641 /* The EL3 interrupt handler. */
642 static irqreturn_t el3_interrupt(int irq, void *dev_id)
644 struct net_device *dev = (struct net_device *) dev_id;
645 struct el3_private *lp = netdev_priv(dev);
648 int i = 0, handled = 1;
650 if (!netif_device_present(dev))
653 ioaddr = dev->base_addr;
655 DEBUG(3, "%s: interrupt, status %4.4x.\n",
656 dev->name, inw(ioaddr + EL3_STATUS));
658 spin_lock(&lp->lock);
659 while ((status = inw(ioaddr + EL3_STATUS)) &
660 (IntLatch | RxComplete | StatsFull)) {
661 if ((status & 0xe000) != 0x2000) {
662 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
667 if (status & RxComplete)
670 if (status & TxAvailable) {
671 DEBUG(3, " TX room bit was handled.\n");
672 /* There's room in the FIFO for a full-sized packet. */
673 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
674 netif_wake_queue(dev);
677 if (status & TxComplete)
680 if (status & (AdapterFailure | RxEarly | StatsFull)) {
681 /* Handle all uncommon interrupts. */
682 if (status & StatsFull) /* Empty statistics. */
684 if (status & RxEarly) { /* Rx early is unused. */
686 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
688 if (status & AdapterFailure) {
691 fifo_diag = inw(ioaddr + 4);
693 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
694 " register %04x.\n", dev->name, fifo_diag);
695 if (fifo_diag & 0x0400) {
697 tc589_wait_for_completion(dev, TxReset);
698 outw(TxEnable, ioaddr + EL3_CMD);
700 if (fifo_diag & 0x2000) {
702 tc589_wait_for_completion(dev, RxReset);
703 set_multicast_list(dev);
704 outw(RxEnable, ioaddr + EL3_CMD);
706 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
711 printk(KERN_ERR "%s: infinite loop in interrupt, "
712 "status %4.4x.\n", dev->name, status);
713 /* Clear all interrupts */
714 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
717 /* Acknowledge the IRQ. */
718 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
721 lp->last_irq = jiffies;
722 spin_unlock(&lp->lock);
723 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
724 dev->name, inw(ioaddr + EL3_STATUS));
725 return IRQ_RETVAL(handled);
728 static void media_check(unsigned long arg)
730 struct net_device *dev = (struct net_device *)(arg);
731 struct el3_private *lp = netdev_priv(dev);
732 unsigned int ioaddr = dev->base_addr;
736 if (!netif_device_present(dev)) goto reschedule;
738 /* Check for pending interrupt with expired latency timer: with
739 this, we can limp along even if the interrupt is blocked */
740 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
741 (inb(ioaddr + EL3_TIMER) == 0xff)) {
743 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
744 el3_interrupt(dev->irq, dev);
749 lp->media.expires = jiffies + HZ/100;
750 add_timer(&lp->media);
754 /* lp->lock guards the EL3 window. Window should always be 1 except
755 when the lock is held */
756 spin_lock_irqsave(&lp->lock, flags);
758 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
760 /* Ignore collisions unless we've had no irq's recently */
761 if (time_before(jiffies, lp->last_irq + HZ)) {
764 /* Try harder to detect carrier errors */
766 outw(StatsDisable, ioaddr + EL3_CMD);
767 errs = inb(ioaddr + 0);
768 outw(StatsEnable, ioaddr + EL3_CMD);
769 dev->stats.tx_carrier_errors += errs;
770 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
773 if (media != lp->media_status) {
774 if ((media & lp->media_status & 0x8000) &&
775 ((lp->media_status ^ media) & 0x0800))
776 printk(KERN_INFO "%s: %s link beat\n", dev->name,
777 (lp->media_status & 0x0800 ? "lost" : "found"));
778 else if ((media & lp->media_status & 0x4000) &&
779 ((lp->media_status ^ media) & 0x0010))
780 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
781 (lp->media_status & 0x0010 ? "ok" : "problem"));
782 if (dev->if_port == 0) {
783 if (media & 0x8000) {
785 printk(KERN_INFO "%s: flipped to 10baseT\n",
788 tc589_set_xcvr(dev, 2);
789 } else if (media & 0x4000) {
791 tc589_set_xcvr(dev, 1);
793 printk(KERN_INFO "%s: flipped to 10base2\n",
797 lp->media_status = media;
801 spin_unlock_irqrestore(&lp->lock, flags);
804 lp->media.expires = jiffies + HZ;
805 add_timer(&lp->media);
808 static struct net_device_stats *el3_get_stats(struct net_device *dev)
810 struct el3_private *lp = netdev_priv(dev);
812 struct pcmcia_device *link = lp->p_dev;
814 if (pcmcia_dev_present(link)) {
815 spin_lock_irqsave(&lp->lock, flags);
817 spin_unlock_irqrestore(&lp->lock, flags);
823 Update statistics. We change to register window 6, so this should be run
824 single-threaded if the device is active. This is expected to be a rare
825 operation, and it's simpler for the rest of the driver to assume that
826 window 1 is always valid rather than use a special window-state variable.
828 Caller must hold the lock for this
830 static void update_stats(struct net_device *dev)
832 unsigned int ioaddr = dev->base_addr;
834 DEBUG(2, "%s: updating the statistics.\n", dev->name);
835 /* Turn off statistics updates while reading. */
836 outw(StatsDisable, ioaddr + EL3_CMD);
837 /* Switch to the stats window, and read everything. */
839 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
840 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
841 /* Multiple collisions. */ inb(ioaddr + 2);
842 dev->stats.collisions += inb(ioaddr + 3);
843 dev->stats.tx_window_errors += inb(ioaddr + 4);
844 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
845 dev->stats.tx_packets += inb(ioaddr + 6);
846 /* Rx packets */ inb(ioaddr + 7);
847 /* Tx deferrals */ inb(ioaddr + 8);
848 /* Rx octets */ inw(ioaddr + 10);
849 /* Tx octets */ inw(ioaddr + 12);
851 /* Back to window 1, and turn statistics back on. */
853 outw(StatsEnable, ioaddr + EL3_CMD);
856 static int el3_rx(struct net_device *dev)
858 unsigned int ioaddr = dev->base_addr;
862 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
863 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
864 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
867 if (rx_status & 0x4000) { /* Error, update stats. */
868 short error = rx_status & 0x3800;
869 dev->stats.rx_errors++;
871 case 0x0000: dev->stats.rx_over_errors++; break;
872 case 0x0800: dev->stats.rx_length_errors++; break;
873 case 0x1000: dev->stats.rx_frame_errors++; break;
874 case 0x1800: dev->stats.rx_length_errors++; break;
875 case 0x2000: dev->stats.rx_frame_errors++; break;
876 case 0x2800: dev->stats.rx_crc_errors++; break;
879 short pkt_len = rx_status & 0x7ff;
882 skb = dev_alloc_skb(pkt_len+5);
884 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
888 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
890 skb->protocol = eth_type_trans(skb, dev);
892 dev->stats.rx_packets++;
893 dev->stats.rx_bytes += pkt_len;
895 DEBUG(1, "%s: couldn't allocate a sk_buff of"
896 " size %d.\n", dev->name, pkt_len);
897 dev->stats.rx_dropped++;
900 /* Pop the top of the Rx FIFO */
901 tc589_wait_for_completion(dev, RxDiscard);
904 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
908 static void set_multicast_list(struct net_device *dev)
910 struct el3_private *lp = netdev_priv(dev);
911 struct pcmcia_device *link = lp->p_dev;
912 unsigned int ioaddr = dev->base_addr;
913 u16 opts = SetRxFilter | RxStation | RxBroadcast;
915 if (!pcmcia_dev_present(link)) return;
916 if (dev->flags & IFF_PROMISC)
917 opts |= RxMulticast | RxProm;
918 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
920 outw(opts, ioaddr + EL3_CMD);
923 static int el3_close(struct net_device *dev)
925 struct el3_private *lp = netdev_priv(dev);
926 struct pcmcia_device *link = lp->p_dev;
927 unsigned int ioaddr = dev->base_addr;
929 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
931 if (pcmcia_dev_present(link)) {
932 /* Turn off statistics ASAP. We update dev->stats below. */
933 outw(StatsDisable, ioaddr + EL3_CMD);
935 /* Disable the receiver and transmitter. */
936 outw(RxDisable, ioaddr + EL3_CMD);
937 outw(TxDisable, ioaddr + EL3_CMD);
939 if (dev->if_port == 2)
940 /* Turn off thinnet power. Green! */
941 outw(StopCoax, ioaddr + EL3_CMD);
942 else if (dev->if_port == 1) {
943 /* Disable link beat and jabber */
945 outw(0, ioaddr + WN4_MEDIA);
948 /* Switching back to window 0 disables the IRQ. */
950 /* But we explicitly zero the IRQ line select anyway. */
951 outw(0x0f00, ioaddr + WN0_IRQ);
953 /* Check if the card still exists */
954 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
959 netif_stop_queue(dev);
960 del_timer_sync(&lp->media);
965 static struct pcmcia_device_id tc589_ids[] = {
966 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
967 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
968 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
969 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
970 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
971 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
974 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
976 static struct pcmcia_driver tc589_driver = {
977 .owner = THIS_MODULE,
981 .probe = tc589_probe,
982 .remove = tc589_detach,
983 .id_table = tc589_ids,
984 .suspend = tc589_suspend,
985 .resume = tc589_resume,
988 static int __init init_tc589(void)
990 return pcmcia_register_driver(&tc589_driver);
993 static void __exit exit_tc589(void)
995 pcmcia_unregister_driver(&tc589_driver);
998 module_init(init_tc589);
999 module_exit(exit_tc589);