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 void 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, struct pt_regs *regs);
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 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_attach(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;
198 link->conf.Present = PRESENT_OPTION;
200 /* The EL3-specific entries in the device structure. */
201 SET_MODULE_OWNER(dev);
202 dev->hard_start_xmit = &el3_start_xmit;
203 dev->set_config = &el3_config;
204 dev->get_stats = &el3_get_stats;
205 dev->set_multicast_list = &set_multicast_list;
206 dev->open = &el3_open;
207 dev->stop = &el3_close;
208 #ifdef HAVE_TX_TIMEOUT
209 dev->tx_timeout = el3_tx_timeout;
210 dev->watchdog_timeo = TX_TIMEOUT;
212 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
214 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
220 /*======================================================================
222 This deletes a driver "instance". The device is de-registered
223 with Card Services. If it has been released, all local data
224 structures are freed. Otherwise, the structures will be freed
225 when the device is released.
227 ======================================================================*/
229 static void tc589_detach(struct pcmcia_device *link)
231 struct net_device *dev = link->priv;
233 DEBUG(0, "3c589_detach(0x%p)\n", link);
236 unregister_netdev(dev);
238 if (link->state & DEV_CONFIG)
244 /*======================================================================
246 tc589_config() is scheduled to run after a CARD_INSERTION event
247 is received, to configure the PCMCIA socket, and to make the
248 ethernet device available to the system.
250 ======================================================================*/
252 #define CS_CHECK(fn, ret) \
253 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
255 static void tc589_config(struct pcmcia_device *link)
257 struct net_device *dev = link->priv;
258 struct el3_private *lp = netdev_priv(dev);
261 u16 buf[32], *phys_addr;
262 int last_fn, last_ret, i, j, multi = 0, fifo;
264 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
266 DEBUG(0, "3c589_config(0x%p)\n", link);
268 phys_addr = (u16 *)dev->dev_addr;
269 tuple.Attributes = 0;
270 tuple.DesiredTuple = CISTPL_CONFIG;
271 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
272 tuple.TupleData = (cisdata_t *)buf;
273 tuple.TupleDataMax = sizeof(buf);
274 tuple.TupleOffset = 0;
275 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
276 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
277 link->conf.ConfigBase = parse.config.base;
278 link->conf.Present = parse.config.rmask[0];
280 /* Is this a 3c562? */
281 tuple.DesiredTuple = CISTPL_MANFID;
282 tuple.Attributes = TUPLE_RETURN_COMMON;
283 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) &&
284 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS)) {
285 if (le16_to_cpu(buf[0]) != MANFID_3COM)
286 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
288 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
292 link->state |= DEV_CONFIG;
294 /* For the 3c562, the base address must be xx00-xx7f */
295 link->io.IOAddrLines = 16;
296 for (i = j = 0; j < 0x400; j += 0x10) {
297 if (multi && (j & 0x80)) continue;
298 link->io.BasePort1 = j ^ 0x300;
299 i = pcmcia_request_io(link, &link->io);
300 if (i == CS_SUCCESS) break;
302 if (i != CS_SUCCESS) {
303 cs_error(link, RequestIO, i);
306 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
307 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
309 dev->irq = link->irq.AssignedIRQ;
310 dev->base_addr = link->io.BasePort1;
311 ioaddr = dev->base_addr;
314 /* The 3c589 has an extra EEPROM for configuration info, including
315 the hardware address. The 3c562 puts the address in the CIS. */
316 tuple.DesiredTuple = 0x88;
317 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
318 pcmcia_get_tuple_data(link, &tuple);
319 for (i = 0; i < 3; i++)
320 phys_addr[i] = htons(buf[i]);
322 for (i = 0; i < 3; i++)
323 phys_addr[i] = htons(read_eeprom(ioaddr, i));
324 if (phys_addr[0] == 0x6060) {
325 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
326 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
331 /* The address and resource configuration register aren't loaded from
332 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
333 outw(0x3f00, ioaddr + 8);
336 /* The if_port symbol can be set when the module is loaded */
337 if ((if_port >= 0) && (if_port <= 3))
338 dev->if_port = if_port;
340 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
342 link->dev_node = &lp->node;
343 link->state &= ~DEV_CONFIG_PENDING;
344 SET_NETDEV_DEV(dev, &handle_to_dev(link));
346 if (register_netdev(dev) != 0) {
347 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
348 link->dev_node = NULL;
352 strcpy(lp->node.dev_name, dev->name);
354 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
355 dev->name, (multi ? "562" : "589"), dev->base_addr,
357 for (i = 0; i < 6; i++)
358 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
359 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
360 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
361 if_names[dev->if_port]);
365 cs_error(link, last_fn, last_ret);
372 /*======================================================================
374 After a card is removed, tc589_release() will unregister the net
375 device, and release the PCMCIA configuration. If the device is
376 still open, this will be postponed until it is closed.
378 ======================================================================*/
380 static void tc589_release(struct pcmcia_device *link)
382 pcmcia_disable_device(link);
385 static int tc589_suspend(struct pcmcia_device *link)
387 struct net_device *dev = link->priv;
389 if ((link->state & DEV_CONFIG) && (link->open))
390 netif_device_detach(dev);
395 static int tc589_resume(struct pcmcia_device *link)
397 struct net_device *dev = link->priv;
399 if ((link->state & DEV_CONFIG) && (link->open)) {
401 netif_device_attach(dev);
407 /*====================================================================*/
410 Use this for commands that may take time to finish
412 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
415 outw(cmd, dev->base_addr + EL3_CMD);
417 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
419 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
424 Read a word from the EEPROM using the regular EEPROM access register.
425 Assume that we are in register window zero.
427 static u16 read_eeprom(kio_addr_t ioaddr, int index)
430 outw(EEPROM_READ + index, ioaddr + 10);
431 /* Reading the eeprom takes 162 us */
432 for (i = 1620; i >= 0; i--)
433 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
435 return inw(ioaddr + 12);
439 Set transceiver type, perhaps to something other than what the user
440 specified in dev->if_port.
442 static void tc589_set_xcvr(struct net_device *dev, int if_port)
444 struct el3_private *lp = netdev_priv(dev);
445 kio_addr_t ioaddr = dev->base_addr;
449 case 0: case 1: outw(0, ioaddr + 6); break;
450 case 2: outw(3<<14, ioaddr + 6); break;
451 case 3: outw(1<<14, ioaddr + 6); break;
453 /* On PCMCIA, this just turns on the LED */
454 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
455 /* 10baseT interface, enable link beat and jabber check. */
457 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
460 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
462 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
465 static void dump_status(struct net_device *dev)
467 kio_addr_t ioaddr = dev->base_addr;
469 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
470 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
471 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
472 inw(ioaddr+TX_FREE));
474 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
475 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
476 inw(ioaddr+0x08), inw(ioaddr+0x0a));
480 /* Reset and restore all of the 3c589 registers. */
481 static void tc589_reset(struct net_device *dev)
483 kio_addr_t ioaddr = dev->base_addr;
487 outw(0x0001, ioaddr + 4); /* Activate board. */
488 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
490 /* Set the station address in window 2. */
492 for (i = 0; i < 6; i++)
493 outb(dev->dev_addr[i], ioaddr + i);
495 tc589_set_xcvr(dev, dev->if_port);
497 /* Switch to the stats window, and clear all stats by reading. */
498 outw(StatsDisable, ioaddr + EL3_CMD);
500 for (i = 0; i < 9; i++)
505 /* Switch to register set 1 for normal use. */
508 /* Accept b-cast and phys addr only. */
509 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
510 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
511 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
512 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
513 /* Allow status bits to be seen. */
514 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
515 /* Ack all pending events, and set active indicator mask. */
516 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
518 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
519 | AdapterFailure, ioaddr + EL3_CMD);
522 static void netdev_get_drvinfo(struct net_device *dev,
523 struct ethtool_drvinfo *info)
525 strcpy(info->driver, DRV_NAME);
526 strcpy(info->version, DRV_VERSION);
527 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
531 static u32 netdev_get_msglevel(struct net_device *dev)
536 static void netdev_set_msglevel(struct net_device *dev, u32 level)
540 #endif /* PCMCIA_DEBUG */
542 static struct ethtool_ops netdev_ethtool_ops = {
543 .get_drvinfo = netdev_get_drvinfo,
545 .get_msglevel = netdev_get_msglevel,
546 .set_msglevel = netdev_set_msglevel,
547 #endif /* PCMCIA_DEBUG */
550 static int el3_config(struct net_device *dev, struct ifmap *map)
552 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
553 if (map->port <= 3) {
554 dev->if_port = map->port;
555 printk(KERN_INFO "%s: switched to %s port\n",
556 dev->name, if_names[dev->if_port]);
557 tc589_set_xcvr(dev, dev->if_port);
564 static int el3_open(struct net_device *dev)
566 struct el3_private *lp = netdev_priv(dev);
567 struct pcmcia_device *link = lp->p_dev;
573 netif_start_queue(dev);
576 init_timer(&lp->media);
577 lp->media.function = &media_check;
578 lp->media.data = (unsigned long) dev;
579 lp->media.expires = jiffies + HZ;
580 add_timer(&lp->media);
582 DEBUG(1, "%s: opened, status %4.4x.\n",
583 dev->name, inw(dev->base_addr + EL3_STATUS));
588 static void el3_tx_timeout(struct net_device *dev)
590 struct el3_private *lp = netdev_priv(dev);
591 kio_addr_t ioaddr = dev->base_addr;
593 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
595 lp->stats.tx_errors++;
596 dev->trans_start = jiffies;
597 /* Issue TX_RESET and TX_START commands. */
598 tc589_wait_for_completion(dev, TxReset);
599 outw(TxEnable, ioaddr + EL3_CMD);
600 netif_wake_queue(dev);
603 static void pop_tx_status(struct net_device *dev)
605 struct el3_private *lp = netdev_priv(dev);
606 kio_addr_t ioaddr = dev->base_addr;
609 /* Clear the Tx status stack. */
610 for (i = 32; i > 0; i--) {
611 u_char tx_status = inb(ioaddr + TX_STATUS);
612 if (!(tx_status & 0x84)) break;
613 /* reset transmitter on jabber error or underrun */
614 if (tx_status & 0x30)
615 tc589_wait_for_completion(dev, TxReset);
616 if (tx_status & 0x38) {
617 DEBUG(1, "%s: transmit error: status 0x%02x\n",
618 dev->name, tx_status);
619 outw(TxEnable, ioaddr + EL3_CMD);
620 lp->stats.tx_aborted_errors++;
622 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
626 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
628 kio_addr_t ioaddr = dev->base_addr;
629 struct el3_private *priv = netdev_priv(dev);
631 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
632 "status %4.4x.\n", dev->name, (long)skb->len,
633 inw(ioaddr + EL3_STATUS));
635 priv->stats.tx_bytes += skb->len;
637 /* Put out the doubleword header... */
638 outw(skb->len, ioaddr + TX_FIFO);
639 outw(0x00, ioaddr + TX_FIFO);
640 /* ... and the packet rounded to a doubleword. */
641 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
643 dev->trans_start = jiffies;
644 if (inw(ioaddr + TX_FREE) <= 1536) {
645 netif_stop_queue(dev);
646 /* Interrupt us when the FIFO has room for max-sized packet. */
647 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
656 /* The EL3 interrupt handler. */
657 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
659 struct net_device *dev = (struct net_device *) dev_id;
660 struct el3_private *lp = netdev_priv(dev);
663 int i = 0, handled = 1;
665 if (!netif_device_present(dev))
668 ioaddr = dev->base_addr;
670 DEBUG(3, "%s: interrupt, status %4.4x.\n",
671 dev->name, inw(ioaddr + EL3_STATUS));
673 spin_lock(&lp->lock);
674 while ((status = inw(ioaddr + EL3_STATUS)) &
675 (IntLatch | RxComplete | StatsFull)) {
676 if ((status & 0xe000) != 0x2000) {
677 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
682 if (status & RxComplete)
685 if (status & TxAvailable) {
686 DEBUG(3, " TX room bit was handled.\n");
687 /* There's room in the FIFO for a full-sized packet. */
688 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
689 netif_wake_queue(dev);
692 if (status & TxComplete)
695 if (status & (AdapterFailure | RxEarly | StatsFull)) {
696 /* Handle all uncommon interrupts. */
697 if (status & StatsFull) /* Empty statistics. */
699 if (status & RxEarly) { /* Rx early is unused. */
701 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
703 if (status & AdapterFailure) {
706 fifo_diag = inw(ioaddr + 4);
708 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
709 " register %04x.\n", dev->name, fifo_diag);
710 if (fifo_diag & 0x0400) {
712 tc589_wait_for_completion(dev, TxReset);
713 outw(TxEnable, ioaddr + EL3_CMD);
715 if (fifo_diag & 0x2000) {
717 tc589_wait_for_completion(dev, RxReset);
718 set_multicast_list(dev);
719 outw(RxEnable, ioaddr + EL3_CMD);
721 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
726 printk(KERN_ERR "%s: infinite loop in interrupt, "
727 "status %4.4x.\n", dev->name, status);
728 /* Clear all interrupts */
729 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
732 /* Acknowledge the IRQ. */
733 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
736 lp->last_irq = jiffies;
737 spin_unlock(&lp->lock);
738 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
739 dev->name, inw(ioaddr + EL3_STATUS));
740 return IRQ_RETVAL(handled);
743 static void media_check(unsigned long arg)
745 struct net_device *dev = (struct net_device *)(arg);
746 struct el3_private *lp = netdev_priv(dev);
747 kio_addr_t ioaddr = dev->base_addr;
751 if (!netif_device_present(dev)) goto reschedule;
754 /* Check for pending interrupt with expired latency timer: with
755 this, we can limp along even if the interrupt is blocked */
756 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
757 (inb(ioaddr + EL3_TIMER) == 0xff)) {
759 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
760 el3_interrupt(dev->irq, lp, NULL);
765 lp->media.expires = jiffies + HZ/100;
766 add_timer(&lp->media);
770 /* lp->lock guards the EL3 window. Window should always be 1 except
771 when the lock is held */
772 spin_lock_irqsave(&lp->lock, flags);
774 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
776 /* Ignore collisions unless we've had no irq's recently */
777 if (time_before(jiffies, lp->last_irq + HZ)) {
780 /* Try harder to detect carrier errors */
782 outw(StatsDisable, ioaddr + EL3_CMD);
783 errs = inb(ioaddr + 0);
784 outw(StatsEnable, ioaddr + EL3_CMD);
785 lp->stats.tx_carrier_errors += errs;
786 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
789 if (media != lp->media_status) {
790 if ((media & lp->media_status & 0x8000) &&
791 ((lp->media_status ^ media) & 0x0800))
792 printk(KERN_INFO "%s: %s link beat\n", dev->name,
793 (lp->media_status & 0x0800 ? "lost" : "found"));
794 else if ((media & lp->media_status & 0x4000) &&
795 ((lp->media_status ^ media) & 0x0010))
796 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
797 (lp->media_status & 0x0010 ? "ok" : "problem"));
798 if (dev->if_port == 0) {
799 if (media & 0x8000) {
801 printk(KERN_INFO "%s: flipped to 10baseT\n",
804 tc589_set_xcvr(dev, 2);
805 } else if (media & 0x4000) {
807 tc589_set_xcvr(dev, 1);
809 printk(KERN_INFO "%s: flipped to 10base2\n",
813 lp->media_status = media;
817 spin_unlock_irqrestore(&lp->lock, flags);
820 lp->media.expires = jiffies + HZ;
821 add_timer(&lp->media);
824 static struct net_device_stats *el3_get_stats(struct net_device *dev)
826 struct el3_private *lp = netdev_priv(dev);
828 struct pcmcia_device *link = lp->p_dev;
831 spin_lock_irqsave(&lp->lock, flags);
833 spin_unlock_irqrestore(&lp->lock, flags);
839 Update statistics. We change to register window 6, so this should be run
840 single-threaded if the device is active. This is expected to be a rare
841 operation, and it's simpler for the rest of the driver to assume that
842 window 1 is always valid rather than use a special window-state variable.
844 Caller must hold the lock for this
846 static void update_stats(struct net_device *dev)
848 struct el3_private *lp = netdev_priv(dev);
849 kio_addr_t ioaddr = dev->base_addr;
851 DEBUG(2, "%s: updating the statistics.\n", dev->name);
852 /* Turn off statistics updates while reading. */
853 outw(StatsDisable, ioaddr + EL3_CMD);
854 /* Switch to the stats window, and read everything. */
856 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
857 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
858 /* Multiple collisions. */ inb(ioaddr + 2);
859 lp->stats.collisions += inb(ioaddr + 3);
860 lp->stats.tx_window_errors += inb(ioaddr + 4);
861 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
862 lp->stats.tx_packets += inb(ioaddr + 6);
863 /* Rx packets */ inb(ioaddr + 7);
864 /* Tx deferrals */ inb(ioaddr + 8);
865 /* Rx octets */ inw(ioaddr + 10);
866 /* Tx octets */ inw(ioaddr + 12);
868 /* Back to window 1, and turn statistics back on. */
870 outw(StatsEnable, ioaddr + EL3_CMD);
873 static int el3_rx(struct net_device *dev)
875 struct el3_private *lp = netdev_priv(dev);
876 kio_addr_t ioaddr = dev->base_addr;
880 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
881 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
882 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
883 (--worklimit >= 0)) {
884 if (rx_status & 0x4000) { /* Error, update stats. */
885 short error = rx_status & 0x3800;
886 lp->stats.rx_errors++;
888 case 0x0000: lp->stats.rx_over_errors++; break;
889 case 0x0800: lp->stats.rx_length_errors++; break;
890 case 0x1000: lp->stats.rx_frame_errors++; break;
891 case 0x1800: lp->stats.rx_length_errors++; break;
892 case 0x2000: lp->stats.rx_frame_errors++; break;
893 case 0x2800: lp->stats.rx_crc_errors++; break;
896 short pkt_len = rx_status & 0x7ff;
899 skb = dev_alloc_skb(pkt_len+5);
901 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
906 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
908 skb->protocol = eth_type_trans(skb, dev);
910 dev->last_rx = jiffies;
911 lp->stats.rx_packets++;
912 lp->stats.rx_bytes += pkt_len;
914 DEBUG(1, "%s: couldn't allocate a sk_buff of"
915 " size %d.\n", dev->name, pkt_len);
916 lp->stats.rx_dropped++;
919 /* Pop the top of the Rx FIFO */
920 tc589_wait_for_completion(dev, RxDiscard);
923 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
927 static void set_multicast_list(struct net_device *dev)
929 struct el3_private *lp = netdev_priv(dev);
930 struct pcmcia_device *link = lp->p_dev;
931 kio_addr_t ioaddr = dev->base_addr;
932 u16 opts = SetRxFilter | RxStation | RxBroadcast;
934 if (!(DEV_OK(link))) return;
935 if (dev->flags & IFF_PROMISC)
936 opts |= RxMulticast | RxProm;
937 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
939 outw(opts, ioaddr + EL3_CMD);
942 static int el3_close(struct net_device *dev)
944 struct el3_private *lp = netdev_priv(dev);
945 struct pcmcia_device *link = lp->p_dev;
946 kio_addr_t ioaddr = dev->base_addr;
948 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
951 /* Turn off statistics ASAP. We update lp->stats below. */
952 outw(StatsDisable, ioaddr + EL3_CMD);
954 /* Disable the receiver and transmitter. */
955 outw(RxDisable, ioaddr + EL3_CMD);
956 outw(TxDisable, ioaddr + EL3_CMD);
958 if (dev->if_port == 2)
959 /* Turn off thinnet power. Green! */
960 outw(StopCoax, ioaddr + EL3_CMD);
961 else if (dev->if_port == 1) {
962 /* Disable link beat and jabber */
964 outw(0, ioaddr + WN4_MEDIA);
967 /* Switching back to window 0 disables the IRQ. */
969 /* But we explicitly zero the IRQ line select anyway. */
970 outw(0x0f00, ioaddr + WN0_IRQ);
972 /* Check if the card still exists */
973 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
978 netif_stop_queue(dev);
979 del_timer_sync(&lp->media);
984 static struct pcmcia_device_id tc589_ids[] = {
985 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
986 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
987 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
988 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
989 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
990 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
993 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
995 static struct pcmcia_driver tc589_driver = {
996 .owner = THIS_MODULE,
1000 .probe = tc589_attach,
1001 .remove = tc589_detach,
1002 .id_table = tc589_ids,
1003 .suspend = tc589_suspend,
1004 .resume = tc589_resume,
1007 static int __init init_tc589(void)
1009 return pcmcia_register_driver(&tc589_driver);
1012 static void __exit exit_tc589(void)
1014 pcmcia_unregister_driver(&tc589_driver);
1017 module_init(init_tc589);
1018 module_exit(exit_tc589);