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, 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_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;
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;
215 return tc589_config(link);
218 /*======================================================================
220 This deletes a driver "instance". The device is de-registered
221 with Card Services. If it has been released, all local data
222 structures are freed. Otherwise, the structures will be freed
223 when the device is released.
225 ======================================================================*/
227 static void tc589_detach(struct pcmcia_device *link)
229 struct net_device *dev = link->priv;
231 DEBUG(0, "3c589_detach(0x%p)\n", link);
234 unregister_netdev(dev);
236 if (link->state & DEV_CONFIG)
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);
259 u16 buf[32], *phys_addr;
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 = (u16 *)dev->dev_addr;
267 tuple.Attributes = 0;
268 tuple.DesiredTuple = CISTPL_CONFIG;
269 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
270 tuple.TupleData = (cisdata_t *)buf;
271 tuple.TupleDataMax = sizeof(buf);
272 tuple.TupleOffset = 0;
273 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple));
274 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse));
275 link->conf.ConfigBase = parse.config.base;
276 link->conf.Present = parse.config.rmask[0];
278 /* Is this a 3c562? */
279 tuple.DesiredTuple = CISTPL_MANFID;
280 tuple.Attributes = TUPLE_RETURN_COMMON;
281 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) &&
282 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS)) {
283 if (le16_to_cpu(buf[0]) != MANFID_3COM)
284 printk(KERN_INFO "3c589_cs: hmmm, is this really a "
286 multi = (le16_to_cpu(buf[1]) == PRODID_3COM_3C562);
290 link->state |= DEV_CONFIG;
292 /* For the 3c562, the base address must be xx00-xx7f */
293 link->io.IOAddrLines = 16;
294 for (i = j = 0; j < 0x400; j += 0x10) {
295 if (multi && (j & 0x80)) continue;
296 link->io.BasePort1 = j ^ 0x300;
297 i = pcmcia_request_io(link, &link->io);
298 if (i == CS_SUCCESS) break;
300 if (i != CS_SUCCESS) {
301 cs_error(link, RequestIO, i);
304 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
305 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
307 dev->irq = link->irq.AssignedIRQ;
308 dev->base_addr = link->io.BasePort1;
309 ioaddr = dev->base_addr;
312 /* The 3c589 has an extra EEPROM for configuration info, including
313 the hardware address. The 3c562 puts the address in the CIS. */
314 tuple.DesiredTuple = 0x88;
315 if (pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) {
316 pcmcia_get_tuple_data(link, &tuple);
317 for (i = 0; i < 3; i++)
318 phys_addr[i] = htons(buf[i]);
320 for (i = 0; i < 3; i++)
321 phys_addr[i] = htons(read_eeprom(ioaddr, i));
322 if (phys_addr[0] == 0x6060) {
323 printk(KERN_ERR "3c589_cs: IO port conflict at 0x%03lx"
324 "-0x%03lx\n", dev->base_addr, dev->base_addr+15);
329 /* The address and resource configuration register aren't loaded from
330 the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. */
331 outw(0x3f00, ioaddr + 8);
334 /* The if_port symbol can be set when the module is loaded */
335 if ((if_port >= 0) && (if_port <= 3))
336 dev->if_port = if_port;
338 printk(KERN_ERR "3c589_cs: invalid if_port requested\n");
340 link->dev_node = &lp->node;
341 link->state &= ~DEV_CONFIG_PENDING;
342 SET_NETDEV_DEV(dev, &handle_to_dev(link));
344 if (register_netdev(dev) != 0) {
345 printk(KERN_ERR "3c589_cs: register_netdev() failed\n");
346 link->dev_node = NULL;
350 strcpy(lp->node.dev_name, dev->name);
352 printk(KERN_INFO "%s: 3Com 3c%s, io %#3lx, irq %d, hw_addr ",
353 dev->name, (multi ? "562" : "589"), dev->base_addr,
355 for (i = 0; i < 6; i++)
356 printk("%02X%s", dev->dev_addr[i], ((i<5) ? ":" : "\n"));
357 printk(KERN_INFO " %dK FIFO split %s Rx:Tx, %s xcvr\n",
358 (fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3],
359 if_names[dev->if_port]);
363 cs_error(link, last_fn, last_ret);
369 /*======================================================================
371 After a card is removed, tc589_release() will unregister the net
372 device, and release the PCMCIA configuration. If the device is
373 still open, this will be postponed until it is closed.
375 ======================================================================*/
377 static void tc589_release(struct pcmcia_device *link)
379 pcmcia_disable_device(link);
382 static int tc589_suspend(struct pcmcia_device *link)
384 struct net_device *dev = link->priv;
386 if ((link->state & DEV_CONFIG) && (link->open))
387 netif_device_detach(dev);
392 static int tc589_resume(struct pcmcia_device *link)
394 struct net_device *dev = link->priv;
396 if ((link->state & DEV_CONFIG) && (link->open)) {
398 netif_device_attach(dev);
404 /*====================================================================*/
407 Use this for commands that may take time to finish
409 static void tc589_wait_for_completion(struct net_device *dev, int cmd)
412 outw(cmd, dev->base_addr + EL3_CMD);
414 if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) break;
416 printk(KERN_WARNING "%s: command 0x%04x did not complete!\n",
421 Read a word from the EEPROM using the regular EEPROM access register.
422 Assume that we are in register window zero.
424 static u16 read_eeprom(kio_addr_t ioaddr, int index)
427 outw(EEPROM_READ + index, ioaddr + 10);
428 /* Reading the eeprom takes 162 us */
429 for (i = 1620; i >= 0; i--)
430 if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0)
432 return inw(ioaddr + 12);
436 Set transceiver type, perhaps to something other than what the user
437 specified in dev->if_port.
439 static void tc589_set_xcvr(struct net_device *dev, int if_port)
441 struct el3_private *lp = netdev_priv(dev);
442 kio_addr_t ioaddr = dev->base_addr;
446 case 0: case 1: outw(0, ioaddr + 6); break;
447 case 2: outw(3<<14, ioaddr + 6); break;
448 case 3: outw(1<<14, ioaddr + 6); break;
450 /* On PCMCIA, this just turns on the LED */
451 outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD);
452 /* 10baseT interface, enable link beat and jabber check. */
454 outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA);
457 lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000);
459 lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800);
462 static void dump_status(struct net_device *dev)
464 kio_addr_t ioaddr = dev->base_addr;
466 printk(KERN_INFO " irq status %04x, rx status %04x, tx status "
467 "%02x tx free %04x\n", inw(ioaddr+EL3_STATUS),
468 inw(ioaddr+RX_STATUS), inb(ioaddr+TX_STATUS),
469 inw(ioaddr+TX_FREE));
471 printk(KERN_INFO " diagnostics: fifo %04x net %04x ethernet %04x"
472 " media %04x\n", inw(ioaddr+0x04), inw(ioaddr+0x06),
473 inw(ioaddr+0x08), inw(ioaddr+0x0a));
477 /* Reset and restore all of the 3c589 registers. */
478 static void tc589_reset(struct net_device *dev)
480 kio_addr_t ioaddr = dev->base_addr;
484 outw(0x0001, ioaddr + 4); /* Activate board. */
485 outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */
487 /* Set the station address in window 2. */
489 for (i = 0; i < 6; i++)
490 outb(dev->dev_addr[i], ioaddr + i);
492 tc589_set_xcvr(dev, dev->if_port);
494 /* Switch to the stats window, and clear all stats by reading. */
495 outw(StatsDisable, ioaddr + EL3_CMD);
497 for (i = 0; i < 9; i++)
502 /* Switch to register set 1 for normal use. */
505 /* Accept b-cast and phys addr only. */
506 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
507 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
508 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
509 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
510 /* Allow status bits to be seen. */
511 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
512 /* Ack all pending events, and set active indicator mask. */
513 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
515 outw(SetIntrEnb | IntLatch | TxAvailable | RxComplete | StatsFull
516 | AdapterFailure, ioaddr + EL3_CMD);
519 static void netdev_get_drvinfo(struct net_device *dev,
520 struct ethtool_drvinfo *info)
522 strcpy(info->driver, DRV_NAME);
523 strcpy(info->version, DRV_VERSION);
524 sprintf(info->bus_info, "PCMCIA 0x%lx", dev->base_addr);
528 static u32 netdev_get_msglevel(struct net_device *dev)
533 static void netdev_set_msglevel(struct net_device *dev, u32 level)
537 #endif /* PCMCIA_DEBUG */
539 static struct ethtool_ops netdev_ethtool_ops = {
540 .get_drvinfo = netdev_get_drvinfo,
542 .get_msglevel = netdev_get_msglevel,
543 .set_msglevel = netdev_set_msglevel,
544 #endif /* PCMCIA_DEBUG */
547 static int el3_config(struct net_device *dev, struct ifmap *map)
549 if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) {
550 if (map->port <= 3) {
551 dev->if_port = map->port;
552 printk(KERN_INFO "%s: switched to %s port\n",
553 dev->name, if_names[dev->if_port]);
554 tc589_set_xcvr(dev, dev->if_port);
561 static int el3_open(struct net_device *dev)
563 struct el3_private *lp = netdev_priv(dev);
564 struct pcmcia_device *link = lp->p_dev;
570 netif_start_queue(dev);
573 init_timer(&lp->media);
574 lp->media.function = &media_check;
575 lp->media.data = (unsigned long) dev;
576 lp->media.expires = jiffies + HZ;
577 add_timer(&lp->media);
579 DEBUG(1, "%s: opened, status %4.4x.\n",
580 dev->name, inw(dev->base_addr + EL3_STATUS));
585 static void el3_tx_timeout(struct net_device *dev)
587 struct el3_private *lp = netdev_priv(dev);
588 kio_addr_t ioaddr = dev->base_addr;
590 printk(KERN_WARNING "%s: Transmit timed out!\n", dev->name);
592 lp->stats.tx_errors++;
593 dev->trans_start = jiffies;
594 /* Issue TX_RESET and TX_START commands. */
595 tc589_wait_for_completion(dev, TxReset);
596 outw(TxEnable, ioaddr + EL3_CMD);
597 netif_wake_queue(dev);
600 static void pop_tx_status(struct net_device *dev)
602 struct el3_private *lp = netdev_priv(dev);
603 kio_addr_t ioaddr = dev->base_addr;
606 /* Clear the Tx status stack. */
607 for (i = 32; i > 0; i--) {
608 u_char tx_status = inb(ioaddr + TX_STATUS);
609 if (!(tx_status & 0x84)) break;
610 /* reset transmitter on jabber error or underrun */
611 if (tx_status & 0x30)
612 tc589_wait_for_completion(dev, TxReset);
613 if (tx_status & 0x38) {
614 DEBUG(1, "%s: transmit error: status 0x%02x\n",
615 dev->name, tx_status);
616 outw(TxEnable, ioaddr + EL3_CMD);
617 lp->stats.tx_aborted_errors++;
619 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
623 static int el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
625 kio_addr_t ioaddr = dev->base_addr;
626 struct el3_private *priv = netdev_priv(dev);
628 DEBUG(3, "%s: el3_start_xmit(length = %ld) called, "
629 "status %4.4x.\n", dev->name, (long)skb->len,
630 inw(ioaddr + EL3_STATUS));
632 priv->stats.tx_bytes += skb->len;
634 /* Put out the doubleword header... */
635 outw(skb->len, ioaddr + TX_FIFO);
636 outw(0x00, ioaddr + TX_FIFO);
637 /* ... and the packet rounded to a doubleword. */
638 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
640 dev->trans_start = jiffies;
641 if (inw(ioaddr + TX_FREE) <= 1536) {
642 netif_stop_queue(dev);
643 /* Interrupt us when the FIFO has room for max-sized packet. */
644 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
653 /* The EL3 interrupt handler. */
654 static irqreturn_t el3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
656 struct net_device *dev = (struct net_device *) dev_id;
657 struct el3_private *lp = netdev_priv(dev);
660 int i = 0, handled = 1;
662 if (!netif_device_present(dev))
665 ioaddr = dev->base_addr;
667 DEBUG(3, "%s: interrupt, status %4.4x.\n",
668 dev->name, inw(ioaddr + EL3_STATUS));
670 spin_lock(&lp->lock);
671 while ((status = inw(ioaddr + EL3_STATUS)) &
672 (IntLatch | RxComplete | StatsFull)) {
673 if ((status & 0xe000) != 0x2000) {
674 DEBUG(1, "%s: interrupt from dead card\n", dev->name);
679 if (status & RxComplete)
682 if (status & TxAvailable) {
683 DEBUG(3, " TX room bit was handled.\n");
684 /* There's room in the FIFO for a full-sized packet. */
685 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
686 netif_wake_queue(dev);
689 if (status & TxComplete)
692 if (status & (AdapterFailure | RxEarly | StatsFull)) {
693 /* Handle all uncommon interrupts. */
694 if (status & StatsFull) /* Empty statistics. */
696 if (status & RxEarly) { /* Rx early is unused. */
698 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
700 if (status & AdapterFailure) {
703 fifo_diag = inw(ioaddr + 4);
705 printk(KERN_WARNING "%s: adapter failure, FIFO diagnostic"
706 " register %04x.\n", dev->name, fifo_diag);
707 if (fifo_diag & 0x0400) {
709 tc589_wait_for_completion(dev, TxReset);
710 outw(TxEnable, ioaddr + EL3_CMD);
712 if (fifo_diag & 0x2000) {
714 tc589_wait_for_completion(dev, RxReset);
715 set_multicast_list(dev);
716 outw(RxEnable, ioaddr + EL3_CMD);
718 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
723 printk(KERN_ERR "%s: infinite loop in interrupt, "
724 "status %4.4x.\n", dev->name, status);
725 /* Clear all interrupts */
726 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
729 /* Acknowledge the IRQ. */
730 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD);
733 lp->last_irq = jiffies;
734 spin_unlock(&lp->lock);
735 DEBUG(3, "%s: exiting interrupt, status %4.4x.\n",
736 dev->name, inw(ioaddr + EL3_STATUS));
737 return IRQ_RETVAL(handled);
740 static void media_check(unsigned long arg)
742 struct net_device *dev = (struct net_device *)(arg);
743 struct el3_private *lp = netdev_priv(dev);
744 kio_addr_t ioaddr = dev->base_addr;
748 if (!netif_device_present(dev)) goto reschedule;
751 /* Check for pending interrupt with expired latency timer: with
752 this, we can limp along even if the interrupt is blocked */
753 if ((inw(ioaddr + EL3_STATUS) & IntLatch) &&
754 (inb(ioaddr + EL3_TIMER) == 0xff)) {
756 printk(KERN_WARNING "%s: interrupt(s) dropped!\n", dev->name);
757 el3_interrupt(dev->irq, lp, NULL);
762 lp->media.expires = jiffies + HZ/100;
763 add_timer(&lp->media);
767 /* lp->lock guards the EL3 window. Window should always be 1 except
768 when the lock is held */
769 spin_lock_irqsave(&lp->lock, flags);
771 media = inw(ioaddr+WN4_MEDIA) & 0xc810;
773 /* Ignore collisions unless we've had no irq's recently */
774 if (time_before(jiffies, lp->last_irq + HZ)) {
777 /* Try harder to detect carrier errors */
779 outw(StatsDisable, ioaddr + EL3_CMD);
780 errs = inb(ioaddr + 0);
781 outw(StatsEnable, ioaddr + EL3_CMD);
782 lp->stats.tx_carrier_errors += errs;
783 if (errs || (lp->media_status & 0x0010)) media |= 0x0010;
786 if (media != lp->media_status) {
787 if ((media & lp->media_status & 0x8000) &&
788 ((lp->media_status ^ media) & 0x0800))
789 printk(KERN_INFO "%s: %s link beat\n", dev->name,
790 (lp->media_status & 0x0800 ? "lost" : "found"));
791 else if ((media & lp->media_status & 0x4000) &&
792 ((lp->media_status ^ media) & 0x0010))
793 printk(KERN_INFO "%s: coax cable %s\n", dev->name,
794 (lp->media_status & 0x0010 ? "ok" : "problem"));
795 if (dev->if_port == 0) {
796 if (media & 0x8000) {
798 printk(KERN_INFO "%s: flipped to 10baseT\n",
801 tc589_set_xcvr(dev, 2);
802 } else if (media & 0x4000) {
804 tc589_set_xcvr(dev, 1);
806 printk(KERN_INFO "%s: flipped to 10base2\n",
810 lp->media_status = media;
814 spin_unlock_irqrestore(&lp->lock, flags);
817 lp->media.expires = jiffies + HZ;
818 add_timer(&lp->media);
821 static struct net_device_stats *el3_get_stats(struct net_device *dev)
823 struct el3_private *lp = netdev_priv(dev);
825 struct pcmcia_device *link = lp->p_dev;
828 spin_lock_irqsave(&lp->lock, flags);
830 spin_unlock_irqrestore(&lp->lock, flags);
836 Update statistics. We change to register window 6, so this should be run
837 single-threaded if the device is active. This is expected to be a rare
838 operation, and it's simpler for the rest of the driver to assume that
839 window 1 is always valid rather than use a special window-state variable.
841 Caller must hold the lock for this
843 static void update_stats(struct net_device *dev)
845 struct el3_private *lp = netdev_priv(dev);
846 kio_addr_t ioaddr = dev->base_addr;
848 DEBUG(2, "%s: updating the statistics.\n", dev->name);
849 /* Turn off statistics updates while reading. */
850 outw(StatsDisable, ioaddr + EL3_CMD);
851 /* Switch to the stats window, and read everything. */
853 lp->stats.tx_carrier_errors += inb(ioaddr + 0);
854 lp->stats.tx_heartbeat_errors += inb(ioaddr + 1);
855 /* Multiple collisions. */ inb(ioaddr + 2);
856 lp->stats.collisions += inb(ioaddr + 3);
857 lp->stats.tx_window_errors += inb(ioaddr + 4);
858 lp->stats.rx_fifo_errors += inb(ioaddr + 5);
859 lp->stats.tx_packets += inb(ioaddr + 6);
860 /* Rx packets */ inb(ioaddr + 7);
861 /* Tx deferrals */ inb(ioaddr + 8);
862 /* Rx octets */ inw(ioaddr + 10);
863 /* Tx octets */ inw(ioaddr + 12);
865 /* Back to window 1, and turn statistics back on. */
867 outw(StatsEnable, ioaddr + EL3_CMD);
870 static int el3_rx(struct net_device *dev)
872 struct el3_private *lp = netdev_priv(dev);
873 kio_addr_t ioaddr = dev->base_addr;
877 DEBUG(3, "%s: in rx_packet(), status %4.4x, rx_status %4.4x.\n",
878 dev->name, inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
879 while (!((rx_status = inw(ioaddr + RX_STATUS)) & 0x8000) &&
880 (--worklimit >= 0)) {
881 if (rx_status & 0x4000) { /* Error, update stats. */
882 short error = rx_status & 0x3800;
883 lp->stats.rx_errors++;
885 case 0x0000: lp->stats.rx_over_errors++; break;
886 case 0x0800: lp->stats.rx_length_errors++; break;
887 case 0x1000: lp->stats.rx_frame_errors++; break;
888 case 0x1800: lp->stats.rx_length_errors++; break;
889 case 0x2000: lp->stats.rx_frame_errors++; break;
890 case 0x2800: lp->stats.rx_crc_errors++; break;
893 short pkt_len = rx_status & 0x7ff;
896 skb = dev_alloc_skb(pkt_len+5);
898 DEBUG(3, " Receiving packet size %d status %4.4x.\n",
903 insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len),
905 skb->protocol = eth_type_trans(skb, dev);
907 dev->last_rx = jiffies;
908 lp->stats.rx_packets++;
909 lp->stats.rx_bytes += pkt_len;
911 DEBUG(1, "%s: couldn't allocate a sk_buff of"
912 " size %d.\n", dev->name, pkt_len);
913 lp->stats.rx_dropped++;
916 /* Pop the top of the Rx FIFO */
917 tc589_wait_for_completion(dev, RxDiscard);
920 printk(KERN_WARNING "%s: too much work in el3_rx!\n", dev->name);
924 static void set_multicast_list(struct net_device *dev)
926 struct el3_private *lp = netdev_priv(dev);
927 struct pcmcia_device *link = lp->p_dev;
928 kio_addr_t ioaddr = dev->base_addr;
929 u16 opts = SetRxFilter | RxStation | RxBroadcast;
931 if (!(DEV_OK(link))) return;
932 if (dev->flags & IFF_PROMISC)
933 opts |= RxMulticast | RxProm;
934 else if (dev->mc_count || (dev->flags & IFF_ALLMULTI))
936 outw(opts, ioaddr + EL3_CMD);
939 static int el3_close(struct net_device *dev)
941 struct el3_private *lp = netdev_priv(dev);
942 struct pcmcia_device *link = lp->p_dev;
943 kio_addr_t ioaddr = dev->base_addr;
945 DEBUG(1, "%s: shutting down ethercard.\n", dev->name);
948 /* Turn off statistics ASAP. We update lp->stats below. */
949 outw(StatsDisable, ioaddr + EL3_CMD);
951 /* Disable the receiver and transmitter. */
952 outw(RxDisable, ioaddr + EL3_CMD);
953 outw(TxDisable, ioaddr + EL3_CMD);
955 if (dev->if_port == 2)
956 /* Turn off thinnet power. Green! */
957 outw(StopCoax, ioaddr + EL3_CMD);
958 else if (dev->if_port == 1) {
959 /* Disable link beat and jabber */
961 outw(0, ioaddr + WN4_MEDIA);
964 /* Switching back to window 0 disables the IRQ. */
966 /* But we explicitly zero the IRQ line select anyway. */
967 outw(0x0f00, ioaddr + WN0_IRQ);
969 /* Check if the card still exists */
970 if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000)
975 netif_stop_queue(dev);
976 del_timer_sync(&lp->media);
981 static struct pcmcia_device_id tc589_ids[] = {
982 PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562),
983 PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77),
984 PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589),
985 PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202),
986 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "3CXEM556.cis"),
987 PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "3CXEM556.cis"),
990 MODULE_DEVICE_TABLE(pcmcia, tc589_ids);
992 static struct pcmcia_driver tc589_driver = {
993 .owner = THIS_MODULE,
997 .probe = tc589_probe,
998 .remove = tc589_detach,
999 .id_table = tc589_ids,
1000 .suspend = tc589_suspend,
1001 .resume = tc589_resume,
1004 static int __init init_tc589(void)
1006 return pcmcia_register_driver(&tc589_driver);
1009 static void __exit exit_tc589(void)
1011 pcmcia_unregister_driver(&tc589_driver);
1014 module_init(init_tc589);
1015 module_exit(exit_tc589);