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(dev_link_t *link);
146 static void tc589_release(dev_link_t *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 *p_dev)
175 struct el3_private *lp;
176 struct net_device *dev;
177 dev_link_t *link = dev_to_instance(p_dev);
179 DEBUG(0, "3c589_attach()\n");
181 /* Create new ethernet device */
182 dev = alloc_etherdev(sizeof(struct el3_private));
185 lp = netdev_priv(dev);
189 spin_lock_init(&lp->lock);
190 link->io.NumPorts1 = 16;
191 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
192 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
193 link->irq.IRQInfo1 = IRQ_LEVEL_ID;
194 link->irq.Handler = &el3_interrupt;
195 link->irq.Instance = dev;
196 link->conf.Attributes = CONF_ENABLE_IRQ;
197 link->conf.IntType = INT_MEMORY_AND_IO;
198 link->conf.ConfigIndex = 1;
199 link->conf.Present = PRESENT_OPTION;
201 /* The EL3-specific entries in the device structure. */
202 SET_MODULE_OWNER(dev);
203 dev->hard_start_xmit = &el3_start_xmit;
204 dev->set_config = &el3_config;
205 dev->get_stats = &el3_get_stats;
206 dev->set_multicast_list = &set_multicast_list;
207 dev->open = &el3_open;
208 dev->stop = &el3_close;
209 #ifdef HAVE_TX_TIMEOUT
210 dev->tx_timeout = el3_tx_timeout;
211 dev->watchdog_timeo = TX_TIMEOUT;
213 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
215 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
221 /*======================================================================
223 This deletes a driver "instance". The device is de-registered
224 with Card Services. If it has been released, all local data
225 structures are freed. Otherwise, the structures will be freed
226 when the device is released.
228 ======================================================================*/
230 static void tc589_detach(struct pcmcia_device *p_dev)
232 dev_link_t *link = dev_to_instance(p_dev);
233 struct net_device *dev = link->priv;
235 DEBUG(0, "3c589_detach(0x%p)\n", link);
238 unregister_netdev(dev);
240 if (link->state & DEV_CONFIG)
246 /*======================================================================
248 tc589_config() is scheduled to run after a CARD_INSERTION event
249 is received, to configure the PCMCIA socket, and to make the
250 ethernet device available to the system.
252 ======================================================================*/
254 #define CS_CHECK(fn, ret) \
255 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
257 static void tc589_config(dev_link_t *link)
259 client_handle_t handle = link->handle;
260 struct net_device *dev = link->priv;
261 struct el3_private *lp = netdev_priv(dev);
264 u16 buf[32], *phys_addr;
265 int last_fn, last_ret, i, j, multi = 0, fifo;
267 char *ram_split[] = {"5:3", "3:1", "1:1", "3:5"};
269 DEBUG(0, "3c589_config(0x%p)\n", link);
271 phys_addr = (u16 *)dev->dev_addr;
272 tuple.Attributes = 0;
273 tuple.DesiredTuple = CISTPL_CONFIG;
274 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
275 tuple.TupleData = (cisdata_t *)buf;
276 tuple.TupleDataMax = sizeof(buf);
277 tuple.TupleOffset = 0;
278 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
279 CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
280 link->conf.ConfigBase = parse.config.base;
281 link->conf.Present = parse.config.rmask[0];
283 /* Is this a 3c562? */
284 tuple.DesiredTuple = CISTPL_MANFID;
285 tuple.Attributes = TUPLE_RETURN_COMMON;
286 if ((pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) &&
287 (pcmcia_get_tuple_data(handle, &tuple) == CS_SUCCESS)) {
288 if (le16_to_cpu(buf[0]) != MANFID_3COM)
289 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
291 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
295 link->state |= DEV_CONFIG;
297 /* For the 3c562, the base address must be xx00-xx7f */
298 link->io.IOAddrLines = 16;
299 for (i = j = 0; j < 0x400; j += 0x10) {
300 if (multi && (j & 0x80)) continue;
301 link->io.BasePort1 = j ^ 0x300;
302 i = pcmcia_request_io(link->handle, &link->io);
303 if (i == CS_SUCCESS) break;
305 if (i != CS_SUCCESS) {
306 cs_error(link->handle, RequestIO, i);
309 CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
310 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
312 dev->irq = link->irq.AssignedIRQ;
313 dev->base_addr = link->io.BasePort1;
314 ioaddr = dev->base_addr;
317 /* The 3c589 has an extra EEPROM for configuration info, including
318 the hardware address. The 3c562 puts the address in the CIS. */
319 tuple.DesiredTuple = 0x88;
320 if (pcmcia_get_first_tuple(handle, &tuple) == CS_SUCCESS) {
321 pcmcia_get_tuple_data(handle, &tuple);
322 for (i = 0; i < 3; i++)
323 phys_addr[i] = htons(buf[i]);
325 for (i = 0; i < 3; i++)
326 phys_addr[i] = htons(read_eeprom(ioaddr, i));
327 if (phys_addr[0] == 0x6060) {
328 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
329 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
334 /* The address and resource configuration register aren't loaded from
335 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
336 outw(0x3f00, ioaddr + 8);
339 /* The if_port symbol can be set when the module is loaded */
340 if ((if_port >= 0) && (if_port <= 3))
341 dev->if_port = if_port;
343 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
345 link->dev_node = &lp->node;
346 link->state &= ~DEV_CONFIG_PENDING;
347 SET_NETDEV_DEV(dev, &handle_to_dev(handle));
349 if (register_netdev(dev) != 0) {
350 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
351 link->dev_node = NULL;
355 strcpy(lp->node.dev_name, dev->name);
357 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
358 dev->name, (multi ? "562" : "589"), dev->base_addr,
360 for (i = 0; i < 6; i++)
361 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
362 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
363 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
364 if_names[dev->if_port]);
368 cs_error(link->handle, last_fn, last_ret);
375 /*======================================================================
377 After a card is removed, tc589_release() will unregister the net
378 device, and release the PCMCIA configuration. If the device is
379 still open, this will be postponed until it is closed.
381 ======================================================================*/
383 static void tc589_release(dev_link_t *link)
385 pcmcia_disable_device(link->handle);
388 static int tc589_suspend(struct pcmcia_device *p_dev)
390 dev_link_t *link = dev_to_instance(p_dev);
391 struct net_device *dev = link->priv;
393 if ((link->state & DEV_CONFIG) && (link->open))
394 netif_device_detach(dev);
399 static int tc589_resume(struct pcmcia_device *p_dev)
401 dev_link_t *link = dev_to_instance(p_dev);
402 struct net_device *dev = link->priv;
404 if ((link->state & DEV_CONFIG) && (link->open)) {
406 netif_device_attach(dev);
412 /*====================================================================*/
415 Use this for commands that may take time to finish
417 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
420 outw(cmd, dev->base_addr + EL3_CMD);
422 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
424 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
429 Read a word from the EEPROM using the regular EEPROM access register.
430 Assume that we are in register window zero.
432 static u16 read_eeprom(kio_addr_t ioaddr, int index)
435 outw(EEPROM_READ + index, ioaddr + 10);
436 /* Reading the eeprom takes 162 us */
437 for (i = 1620; i >= 0; i--)
438 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
440 return inw(ioaddr + 12);
444 Set transceiver type, perhaps to something other than what the user
445 specified in dev->if_port.
447 static void tc589_set_xcvr(struct net_device *dev, int if_port)
449 struct el3_private *lp = netdev_priv(dev);
450 kio_addr_t ioaddr = dev->base_addr;
454 case 0: case 1: outw(0, ioaddr + 6); break;
455 case 2: outw(3<<14, ioaddr + 6); break;
456 case 3: outw(1<<14, ioaddr + 6); break;
458 /* On PCMCIA, this just turns on the LED */
459 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
460 /* 10baseT interface, enable link beat and jabber check. */
462 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
465 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
467 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
470 static void dump_status(struct net_device *dev)
472 kio_addr_t ioaddr = dev->base_addr;
474 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
475 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
476 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
477 inw(ioaddr+TX_FREE));
479 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
480 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
481 inw(ioaddr+0x08), inw(ioaddr+0x0a));
485 /* Reset and restore all of the 3c589 registers. */
486 static void tc589_reset(struct net_device *dev)
488 kio_addr_t ioaddr = dev->base_addr;
492 outw(0x0001, ioaddr + 4); /* Activate board. */
493 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
495 /* Set the station address in window 2. */
497 for (i = 0; i < 6; i++)
498 outb(dev->dev_addr[i], ioaddr + i);
500 tc589_set_xcvr(dev, dev->if_port);
502 /* Switch to the stats window, and clear all stats by reading. */
503 outw(StatsDisable, ioaddr + EL3_CMD);
505 for (i = 0; i < 9; i++)
510 /* Switch to register set 1 for normal use. */
513 /* Accept b-cast and phys addr only. */
514 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
515 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
516 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
517 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
518 /* Allow status bits to be seen. */
519 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
520 /* Ack all pending events, and set active indicator mask. */
521 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
523 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
524 | AdapterFailure, ioaddr + EL3_CMD);
527 static void netdev_get_drvinfo(struct net_device *dev,
528 struct ethtool_drvinfo *info)
530 strcpy(info->driver, DRV_NAME);
531 strcpy(info->version, DRV_VERSION);
532 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
536 static u32 netdev_get_msglevel(struct net_device *dev)
541 static void netdev_set_msglevel(struct net_device *dev, u32 level)
545 #endif /* PCMCIA_DEBUG */
547 static struct ethtool_ops netdev_ethtool_ops = {
548 .get_drvinfo = netdev_get_drvinfo,
550 .get_msglevel = netdev_get_msglevel,
551 .set_msglevel = netdev_set_msglevel,
552 #endif /* PCMCIA_DEBUG */
555 static int el3_config(struct net_device *dev, struct ifmap *map)
557 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
558 if (map->port <= 3) {
559 dev->if_port = map->port;
560 printk(KERN_INFO "%s: switched to %s port\n",
561 dev->name, if_names[dev->if_port]);
562 tc589_set_xcvr(dev, dev->if_port);
569 static int el3_open(struct net_device *dev)
571 struct el3_private *lp = netdev_priv(dev);
572 dev_link_t *link = lp->p_dev;
578 netif_start_queue(dev);
581 init_timer(&lp->media);
582 lp->media.function = &media_check;
583 lp->media.data = (unsigned long) dev;
584 lp->media.expires = jiffies + HZ;
585 add_timer(&lp->media);
587 DEBUG(1, "%s: opened, status %4.4x.\n",
588 dev->name, inw(dev->base_addr + EL3_STATUS));
593 static void el3_tx_timeout(struct net_device *dev)
595 struct el3_private *lp = netdev_priv(dev);
596 kio_addr_t ioaddr = dev->base_addr;
598 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
600 lp->stats.tx_errors++;
601 dev->trans_start = jiffies;
602 /* Issue TX_RESET and TX_START commands. */
603 tc589_wait_for_completion(dev, TxReset);
604 outw(TxEnable, ioaddr + EL3_CMD);
605 netif_wake_queue(dev);
608 static void pop_tx_status(struct net_device *dev)
610 struct el3_private *lp = netdev_priv(dev);
611 kio_addr_t ioaddr = dev->base_addr;
614 /* Clear the Tx status stack. */
615 for (i = 32; i > 0; i--) {
616 u_char tx_status = inb(ioaddr + TX_STATUS);
617 if (!(tx_status & 0x84)) break;
618 /* reset transmitter on jabber error or underrun */
619 if (tx_status & 0x30)
620 tc589_wait_for_completion(dev, TxReset);
621 if (tx_status & 0x38) {
622 DEBUG(1, "%s: transmit error: status 0x%02x\n",
623 dev->name, tx_status);
624 outw(TxEnable, ioaddr + EL3_CMD);
625 lp->stats.tx_aborted_errors++;
627 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
631 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
633 kio_addr_t ioaddr = dev->base_addr;
634 struct el3_private *priv = netdev_priv(dev);
636 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
637 "status %4.4x.\n", dev->name, (long)skb->len,
638 inw(ioaddr + EL3_STATUS));
640 priv->stats.tx_bytes += skb->len;
642 /* Put out the doubleword header... */
643 outw(skb->len, ioaddr + TX_FIFO);
644 outw(0x00, ioaddr + TX_FIFO);
645 /* ... and the packet rounded to a doubleword. */
646 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
648 dev->trans_start = jiffies;
649 if (inw(ioaddr + TX_FREE) <= 1536) {
650 netif_stop_queue(dev);
651 /* Interrupt us when the FIFO has room for max-sized packet. */
652 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
661 /* The EL3 interrupt handler. */
662 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
664 struct net_device *dev = (struct net_device *) dev_id;
665 struct el3_private *lp = netdev_priv(dev);
668 int i = 0, handled = 1;
670 if (!netif_device_present(dev))
673 ioaddr = dev->base_addr;
675 DEBUG(3, "%s: interrupt, status %4.4x.\n",
676 dev->name, inw(ioaddr + EL3_STATUS));
678 spin_lock(&lp->lock);
679 while ((status = inw(ioaddr + EL3_STATUS)) &
680 (IntLatch | RxComplete | StatsFull)) {
681 if ((status & 0xe000) != 0x2000) {
682 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
687 if (status & RxComplete)
690 if (status & TxAvailable) {
691 DEBUG(3, " TX room bit was handled.\n");
692 /* There's room in the FIFO for a full-sized packet. */
693 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
694 netif_wake_queue(dev);
697 if (status & TxComplete)
700 if (status & (AdapterFailure | RxEarly | StatsFull)) {
701 /* Handle all uncommon interrupts. */
702 if (status & StatsFull) /* Empty statistics. */
704 if (status & RxEarly) { /* Rx early is unused. */
706 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
708 if (status & AdapterFailure) {
711 fifo_diag = inw(ioaddr + 4);
713 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
714 " register %04x.\n", dev->name, fifo_diag);
715 if (fifo_diag & 0x0400) {
717 tc589_wait_for_completion(dev, TxReset);
718 outw(TxEnable, ioaddr + EL3_CMD);
720 if (fifo_diag & 0x2000) {
722 tc589_wait_for_completion(dev, RxReset);
723 set_multicast_list(dev);
724 outw(RxEnable, ioaddr + EL3_CMD);
726 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
731 printk(KERN_ERR "%s: infinite loop in interrupt, "
732 "status %4.4x.\n", dev->name, status);
733 /* Clear all interrupts */
734 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
737 /* Acknowledge the IRQ. */
738 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
741 lp->last_irq = jiffies;
742 spin_unlock(&lp->lock);
743 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
744 dev->name, inw(ioaddr + EL3_STATUS));
745 return IRQ_RETVAL(handled);
748 static void media_check(unsigned long arg)
750 struct net_device *dev = (struct net_device *)(arg);
751 struct el3_private *lp = netdev_priv(dev);
752 kio_addr_t ioaddr = dev->base_addr;
756 if (!netif_device_present(dev)) goto reschedule;
759 /* Check for pending interrupt with expired latency timer: with
760 this, we can limp along even if the interrupt is blocked */
761 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
762 (inb(ioaddr + EL3_TIMER) == 0xff)) {
764 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
765 el3_interrupt(dev->irq, lp, NULL);
770 lp->media.expires = jiffies + HZ/100;
771 add_timer(&lp->media);
775 /* lp->lock guards the EL3 window. Window should always be 1 except
776 when the lock is held */
777 spin_lock_irqsave(&lp->lock, flags);
779 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
781 /* Ignore collisions unless we've had no irq's recently */
782 if (time_before(jiffies, lp->last_irq + HZ)) {
785 /* Try harder to detect carrier errors */
787 outw(StatsDisable, ioaddr + EL3_CMD);
788 errs = inb(ioaddr + 0);
789 outw(StatsEnable, ioaddr + EL3_CMD);
790 lp->stats.tx_carrier_errors += errs;
791 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
794 if (media != lp->media_status) {
795 if ((media & lp->media_status & 0x8000) &&
796 ((lp->media_status ^ media) & 0x0800))
797 printk(KERN_INFO "%s: %s link beat\n", dev->name,
798 (lp->media_status & 0x0800 ? "lost" : "found"));
799 else if ((media & lp->media_status & 0x4000) &&
800 ((lp->media_status ^ media) & 0x0010))
801 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
802 (lp->media_status & 0x0010 ? "ok" : "problem"));
803 if (dev->if_port == 0) {
804 if (media & 0x8000) {
806 printk(KERN_INFO "%s: flipped to 10baseT\n",
809 tc589_set_xcvr(dev, 2);
810 } else if (media & 0x4000) {
812 tc589_set_xcvr(dev, 1);
814 printk(KERN_INFO "%s: flipped to 10base2\n",
818 lp->media_status = media;
822 spin_unlock_irqrestore(&lp->lock, flags);
825 lp->media.expires = jiffies + HZ;
826 add_timer(&lp->media);
829 static struct net_device_stats *el3_get_stats(struct net_device *dev)
831 struct el3_private *lp = netdev_priv(dev);
833 dev_link_t *link = lp->p_dev;
836 spin_lock_irqsave(&lp->lock, flags);
838 spin_unlock_irqrestore(&lp->lock, flags);
844 Update statistics. We change to register window 6, so this should be run
845 single-threaded if the device is active. This is expected to be a rare
846 operation, and it's simpler for the rest of the driver to assume that
847 window 1 is always valid rather than use a special window-state variable.
849 Caller must hold the lock for this
851 static void update_stats(struct net_device *dev)
853 struct el3_private *lp = netdev_priv(dev);
854 kio_addr_t ioaddr = dev->base_addr;
856 DEBUG(2, "%s: updating the statistics.\n", dev->name);
857 /* Turn off statistics updates while reading. */
858 outw(StatsDisable, ioaddr + EL3_CMD);
859 /* Switch to the stats window, and read everything. */
861 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
862 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
863 /* Multiple collisions. */ inb(ioaddr + 2);
864 lp->stats.collisions += inb(ioaddr + 3);
865 lp->stats.tx_window_errors += inb(ioaddr + 4);
866 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
867 lp->stats.tx_packets += inb(ioaddr + 6);
868 /* Rx packets */ inb(ioaddr + 7);
869 /* Tx deferrals */ inb(ioaddr + 8);
870 /* Rx octets */ inw(ioaddr + 10);
871 /* Tx octets */ inw(ioaddr + 12);
873 /* Back to window 1, and turn statistics back on. */
875 outw(StatsEnable, ioaddr + EL3_CMD);
878 static int el3_rx(struct net_device *dev)
880 struct el3_private *lp = netdev_priv(dev);
881 kio_addr_t ioaddr = dev->base_addr;
885 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
886 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
887 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
888 (--worklimit >= 0)) {
889 if (rx_status & 0x4000) { /* Error, update stats. */
890 short error = rx_status & 0x3800;
891 lp->stats.rx_errors++;
893 case 0x0000: lp->stats.rx_over_errors++; break;
894 case 0x0800: lp->stats.rx_length_errors++; break;
895 case 0x1000: lp->stats.rx_frame_errors++; break;
896 case 0x1800: lp->stats.rx_length_errors++; break;
897 case 0x2000: lp->stats.rx_frame_errors++; break;
898 case 0x2800: lp->stats.rx_crc_errors++; break;
901 short pkt_len = rx_status & 0x7ff;
904 skb = dev_alloc_skb(pkt_len+5);
906 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
911 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
913 skb->protocol = eth_type_trans(skb, dev);
915 dev->last_rx = jiffies;
916 lp->stats.rx_packets++;
917 lp->stats.rx_bytes += pkt_len;
919 DEBUG(1, "%s: couldn't allocate a sk_buff of"
920 " size %d.\n", dev->name, pkt_len);
921 lp->stats.rx_dropped++;
924 /* Pop the top of the Rx FIFO */
925 tc589_wait_for_completion(dev, RxDiscard);
928 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
932 static void set_multicast_list(struct net_device *dev)
934 struct el3_private *lp = netdev_priv(dev);
935 dev_link_t *link = lp->p_dev;
936 kio_addr_t ioaddr = dev->base_addr;
937 u16 opts = SetRxFilter | RxStation | RxBroadcast;
939 if (!(DEV_OK(link))) return;
940 if (dev->flags & IFF_PROMISC)
941 opts |= RxMulticast | RxProm;
942 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
944 outw(opts, ioaddr + EL3_CMD);
947 static int el3_close(struct net_device *dev)
949 struct el3_private *lp = netdev_priv(dev);
950 dev_link_t *link = lp->p_dev;
951 kio_addr_t ioaddr = dev->base_addr;
953 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
956 /* Turn off statistics ASAP. We update lp->stats below. */
957 outw(StatsDisable, ioaddr + EL3_CMD);
959 /* Disable the receiver and transmitter. */
960 outw(RxDisable, ioaddr + EL3_CMD);
961 outw(TxDisable, ioaddr + EL3_CMD);
963 if (dev->if_port == 2)
964 /* Turn off thinnet power. Green! */
965 outw(StopCoax, ioaddr + EL3_CMD);
966 else if (dev->if_port == 1) {
967 /* Disable link beat and jabber */
969 outw(0, ioaddr + WN4_MEDIA);
972 /* Switching back to window 0 disables the IRQ. */
974 /* But we explicitly zero the IRQ line select anyway. */
975 outw(0x0f00, ioaddr + WN0_IRQ);
977 /* Check if the card still exists */
978 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
983 netif_stop_queue(dev);
984 del_timer_sync(&lp->media);
989 static struct pcmcia_device_id tc589_ids[] = {
990 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
991 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
992 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
993 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
994 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
995 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
998 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
1000 static struct pcmcia_driver tc589_driver = {
1001 .owner = THIS_MODULE,
1005 .probe = tc589_attach,
1006 .remove = tc589_detach,
1007 .id_table = tc589_ids,
1008 .suspend = tc589_suspend,
1009 .resume = tc589_resume,
1012 static int __init init_tc589(void)
1014 return pcmcia_register_driver(&tc589_driver);
1017 static void __exit exit_tc589(void)
1019 pcmcia_unregister_driver(&tc589_driver);
1022 module_init(init_tc589);
1023 module_exit(exit_tc589);