1 /* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */
2 /*
3 Written 1993-2000 by Donald Becker.
4
5 Copyright 1994-2000 by Donald Becker.
6 Copyright 1993 United States Government as represented by the
7 Director, National Security Agency. This software may be used and
8 distributed according to the terms of the GNU General Public License,
9 incorporated herein by reference.
10
11 This driver is for the 3Com EtherLinkIII series.
12
13 The author may be reached as becker@scyld.com, or C/O
14 Scyld Computing Corporation
15 410 Severn Ave., Suite 210
16 Annapolis MD 21403
17
18 Known limitations:
19 Because of the way 3c509 ISA detection works it's difficult to predict
20 a priori which of several ISA-mode cards will be detected first.
21
22 This driver does not use predictive interrupt mode, resulting in higher
23 packet latency but lower overhead. If interrupts are disabled for an
24 unusually long time it could also result in missed packets, but in
25 practice this rarely happens.
26
27
28 FIXES:
29 Alan Cox: Removed the 'Unexpected interrupt' bug.
30 Michael Meskes: Upgraded to Donald Becker's version 1.07.
31 Alan Cox: Increased the eeprom delay. Regardless of
32 what the docs say some people definitely
33 get problems with lower (but in card spec)
34 delays
35 v1.10 4/21/97 Fixed module code so that multiple cards may be detected,
36 other cleanups. -djb
37 Andrea Arcangeli: Upgraded to Donald Becker's version 1.12.
38 Rick Payne: Fixed SMP race condition
39 v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb
40 v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb
41 v1.15 1/31/98 Faster recovery for Tx errors. -djb
42 v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb
43 v1.18 12Mar2001 Andrew Morton
44 - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz)
45 - Reviewed against 1.18 from scyld.com
46 v1.18a 17Nov2001 Jeff Garzik <jgarzik@pobox.com>
47 - ethtool support
48 v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
49 - Power Management support
50 v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
51 - Full duplex support
52 v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
53 - Additional ethtool features
54 v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
55 - Increase *read_eeprom udelay to workaround oops with 2 cards.
56 v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
57 - Introduce driver model for EISA cards.
58 v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org>
59 - convert to isa_driver and pnp_driver and some cleanups
60 */
61
62 #define DRV_NAME "3c509"
63 #define DRV_VERSION "1.20"
64 #define DRV_RELDATE "04Feb2008"
65
66 /* A few values that may be tweaked. */
67
68 /* Time in jiffies before concluding the transmitter is hung. */
69 #define TX_TIMEOUT (400*HZ/1000)
70
71 #include <linux/module.h>
72 #include <linux/isa.h>
73 #include <linux/pnp.h>
74 #include <linux/string.h>
75 #include <linux/interrupt.h>
76 #include <linux/errno.h>
77 #include <linux/in.h>
78 #include <linux/ioport.h>
79 #include <linux/init.h>
80 #include <linux/netdevice.h>
81 #include <linux/etherdevice.h>
82 #include <linux/pm.h>
83 #include <linux/skbuff.h>
84 #include <linux/delay.h> /* for udelay() */
85 #include <linux/spinlock.h>
86 #include <linux/ethtool.h>
87 #include <linux/device.h>
88 #include <linux/eisa.h>
89 #include <linux/bitops.h>
90
91 #include <linux/uaccess.h>
92 #include <asm/io.h>
93 #include <asm/irq.h>
94
95 static char version[] = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n";
96
97 #ifdef EL3_DEBUG
98 static int el3_debug = EL3_DEBUG;
99 #else
100 static int el3_debug = 2;
101 #endif
102
103 /* Used to do a global count of all the cards in the system. Must be
104 * a global variable so that the eisa probe routines can increment
105 * it */
106 static int el3_cards = 0;
107 #define EL3_MAX_CARDS 8
108
109 /* To minimize the size of the driver source I only define operating
110 constants if they are used several times. You'll need the manual
111 anyway if you want to understand driver details. */
112 /* Offsets from base I/O address. */
113 #define EL3_DATA 0x00
114 #define EL3_CMD 0x0e
115 #define EL3_STATUS 0x0e
116 #define EEPROM_READ 0x80
117
118 #define EL3_IO_EXTENT 16
119
120 #define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD)
121
122
123 /* The top five bits written to EL3_CMD are a command, the lower
124 11 bits are the parameter, if applicable. */
125 enum c509cmd {
126 TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11,
127 RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11,
128 TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11,
129 FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11,
130 SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11,
131 SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11,
132 StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11,
133 PowerDown = 28<<11, PowerAuto = 29<<11};
134
135 enum c509status {
136 IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004,
137 TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020,
138 IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, };
139
140 /* The SetRxFilter command accepts the following classes: */
141 enum RxFilter {
142 RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 };
143
144 /* Register window 1 offsets, the window used in normal operation. */
145 #define TX_FIFO 0x00
146 #define RX_FIFO 0x00
147 #define RX_STATUS 0x08
148 #define TX_STATUS 0x0B
149 #define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */
150
151 #define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */
152 #define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */
153 #define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */
154 #define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */
155 #define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */
156 #define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */
157 #define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */
158
159 /*
160 * Must be a power of two (we use a binary and in the
161 * circular queue)
162 */
163 #define SKB_QUEUE_SIZE 64
164
165 enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA };
166
167 struct el3_private {
168 spinlock_t lock;
169 /* skb send-queue */
170 int head, size;
171 struct sk_buff *queue[SKB_QUEUE_SIZE];
172 enum el3_cardtype type;
173 };
174 static int id_port;
175 static int current_tag;
176 static struct net_device *el3_devs[EL3_MAX_CARDS];
177
178 /* Parameters that may be passed into the module. */
179 static int debug = -1;
180 static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1};
181 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
182 static int max_interrupt_work = 10;
183 #ifdef CONFIG_PNP
184 static int nopnp;
185 #endif
186
187 static int el3_common_init(struct net_device *dev);
188 static void el3_common_remove(struct net_device *dev);
189 static ushort id_read_eeprom(int index);
190 static ushort read_eeprom(int ioaddr, int index);
191 static int el3_open(struct net_device *dev);
192 static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev);
193 static irqreturn_t el3_interrupt(int irq, void *dev_id);
194 static void update_stats(struct net_device *dev);
195 static struct net_device_stats *el3_get_stats(struct net_device *dev);
196 static int el3_rx(struct net_device *dev);
197 static int el3_close(struct net_device *dev);
198 static void set_multicast_list(struct net_device *dev);
199 static void el3_tx_timeout (struct net_device *dev);
200 static void el3_down(struct net_device *dev);
201 static void el3_up(struct net_device *dev);
202 static const struct ethtool_ops ethtool_ops;
203 #ifdef CONFIG_PM
204 static int el3_suspend(struct device *, pm_message_t);
205 static int el3_resume(struct device *);
206 #else
207 #define el3_suspend NULL
208 #define el3_resume NULL
209 #endif
210
211
212 /* generic device remove for all device types */
213 static int el3_device_remove (struct device *device);
214 #ifdef CONFIG_NET_POLL_CONTROLLER
215 static void el3_poll_controller(struct net_device *dev);
216 #endif
217
218 /* Return 0 on success, 1 on error, 2 when found already detected PnP card */
el3_isa_id_sequence(__be16 * phys_addr)219 static int el3_isa_id_sequence(__be16 *phys_addr)
220 {
221 short lrs_state = 0xff;
222 int i;
223
224 /* ISA boards are detected by sending the ID sequence to the
225 ID_PORT. We find cards past the first by setting the 'current_tag'
226 on cards as they are found. Cards with their tag set will not
227 respond to subsequent ID sequences. */
228
229 outb(0x00, id_port);
230 outb(0x00, id_port);
231 for (i = 0; i < 255; i++) {
232 outb(lrs_state, id_port);
233 lrs_state <<= 1;
234 lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
235 }
236 /* For the first probe, clear all board's tag registers. */
237 if (current_tag == 0)
238 outb(0xd0, id_port);
239 else /* Otherwise kill off already-found boards. */
240 outb(0xd8, id_port);
241 if (id_read_eeprom(7) != 0x6d50)
242 return 1;
243 /* Read in EEPROM data, which does contention-select.
244 Only the lowest address board will stay "on-line".
245 3Com got the byte order backwards. */
246 for (i = 0; i < 3; i++)
247 phys_addr[i] = htons(id_read_eeprom(i));
248 #ifdef CONFIG_PNP
249 if (!nopnp) {
250 /* The ISA PnP 3c509 cards respond to the ID sequence too.
251 This check is needed in order not to register them twice. */
252 for (i = 0; i < el3_cards; i++) {
253 struct el3_private *lp = netdev_priv(el3_devs[i]);
254 if (lp->type == EL3_PNP &&
255 ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) {
256 if (el3_debug > 3)
257 pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n",
258 phys_addr[0] & 0xff, phys_addr[0] >> 8,
259 phys_addr[1] & 0xff, phys_addr[1] >> 8,
260 phys_addr[2] & 0xff, phys_addr[2] >> 8);
261 /* Set the adaptor tag so that the next card can be found. */
262 outb(0xd0 + ++current_tag, id_port);
263 return 2;
264 }
265 }
266 }
267 #endif /* CONFIG_PNP */
268 return 0;
269
270 }
271
el3_dev_fill(struct net_device * dev,__be16 * phys_addr,int ioaddr,int irq,int if_port,enum el3_cardtype type)272 static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,
273 int irq, int if_port, enum el3_cardtype type)
274 {
275 struct el3_private *lp = netdev_priv(dev);
276
277 memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
278 dev->base_addr = ioaddr;
279 dev->irq = irq;
280 dev->if_port = if_port;
281 lp->type = type;
282 }
283
el3_isa_match(struct device * pdev,unsigned int ndev)284 static int el3_isa_match(struct device *pdev, unsigned int ndev)
285 {
286 struct net_device *dev;
287 int ioaddr, isa_irq, if_port, err;
288 unsigned int iobase;
289 __be16 phys_addr[3];
290
291 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
292 ; /* Skip to next card when PnP card found */
293 if (err == 1)
294 return 0;
295
296 iobase = id_read_eeprom(8);
297 if_port = iobase >> 14;
298 ioaddr = 0x200 + ((iobase & 0x1f) << 4);
299 if (irq[el3_cards] > 1 && irq[el3_cards] < 16)
300 isa_irq = irq[el3_cards];
301 else
302 isa_irq = id_read_eeprom(9) >> 12;
303
304 dev = alloc_etherdev(sizeof(struct el3_private));
305 if (!dev)
306 return -ENOMEM;
307
308 SET_NETDEV_DEV(dev, pdev);
309 netdev_boot_setup_check(dev);
310
311 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) {
312 free_netdev(dev);
313 return 0;
314 }
315
316 /* Set the adaptor tag so that the next card can be found. */
317 outb(0xd0 + ++current_tag, id_port);
318
319 /* Activate the adaptor at the EEPROM location. */
320 outb((ioaddr >> 4) | 0xe0, id_port);
321
322 EL3WINDOW(0);
323 if (inw(ioaddr) != 0x6d50) {
324 free_netdev(dev);
325 return 0;
326 }
327
328 /* Free the interrupt so that some other card can use it. */
329 outw(0x0f00, ioaddr + WN0_IRQ);
330
331 el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA);
332 dev_set_drvdata(pdev, dev);
333 if (el3_common_init(dev)) {
334 free_netdev(dev);
335 return 0;
336 }
337
338 el3_devs[el3_cards++] = dev;
339 return 1;
340 }
341
el3_isa_remove(struct device * pdev,unsigned int ndev)342 static int el3_isa_remove(struct device *pdev,
343 unsigned int ndev)
344 {
345 el3_device_remove(pdev);
346 dev_set_drvdata(pdev, NULL);
347 return 0;
348 }
349
350 #ifdef CONFIG_PM
el3_isa_suspend(struct device * dev,unsigned int n,pm_message_t state)351 static int el3_isa_suspend(struct device *dev, unsigned int n,
352 pm_message_t state)
353 {
354 current_tag = 0;
355 return el3_suspend(dev, state);
356 }
357
el3_isa_resume(struct device * dev,unsigned int n)358 static int el3_isa_resume(struct device *dev, unsigned int n)
359 {
360 struct net_device *ndev = dev_get_drvdata(dev);
361 int ioaddr = ndev->base_addr, err;
362 __be16 phys_addr[3];
363
364 while ((err = el3_isa_id_sequence(phys_addr)) == 2)
365 ; /* Skip to next card when PnP card found */
366 if (err == 1)
367 return 0;
368 /* Set the adaptor tag so that the next card can be found. */
369 outb(0xd0 + ++current_tag, id_port);
370 /* Enable the card */
371 outb((ioaddr >> 4) | 0xe0, id_port);
372 EL3WINDOW(0);
373 if (inw(ioaddr) != 0x6d50)
374 return 1;
375 /* Free the interrupt so that some other card can use it. */
376 outw(0x0f00, ioaddr + WN0_IRQ);
377 return el3_resume(dev);
378 }
379 #endif
380
381 static struct isa_driver el3_isa_driver = {
382 .match = el3_isa_match,
383 .remove = el3_isa_remove,
384 #ifdef CONFIG_PM
385 .suspend = el3_isa_suspend,
386 .resume = el3_isa_resume,
387 #endif
388 .driver = {
389 .name = "3c509"
390 },
391 };
392 static int isa_registered;
393
394 #ifdef CONFIG_PNP
395 static const struct pnp_device_id el3_pnp_ids[] = {
396 { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */
397 { .id = "TCM5091" }, /* 3Com Etherlink III */
398 { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */
399 { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */
400 { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */
401 { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */
402 { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */
403 { .id = "" }
404 };
405 MODULE_DEVICE_TABLE(pnp, el3_pnp_ids);
406
el3_pnp_probe(struct pnp_dev * pdev,const struct pnp_device_id * id)407 static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id)
408 {
409 short i;
410 int ioaddr, irq, if_port;
411 __be16 phys_addr[3];
412 struct net_device *dev = NULL;
413 int err;
414
415 ioaddr = pnp_port_start(pdev, 0);
416 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp"))
417 return -EBUSY;
418 irq = pnp_irq(pdev, 0);
419 EL3WINDOW(0);
420 for (i = 0; i < 3; i++)
421 phys_addr[i] = htons(read_eeprom(ioaddr, i));
422 if_port = read_eeprom(ioaddr, 8) >> 14;
423 dev = alloc_etherdev(sizeof(struct el3_private));
424 if (!dev) {
425 release_region(ioaddr, EL3_IO_EXTENT);
426 return -ENOMEM;
427 }
428 SET_NETDEV_DEV(dev, &pdev->dev);
429 netdev_boot_setup_check(dev);
430
431 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP);
432 pnp_set_drvdata(pdev, dev);
433 err = el3_common_init(dev);
434
435 if (err) {
436 pnp_set_drvdata(pdev, NULL);
437 free_netdev(dev);
438 return err;
439 }
440
441 el3_devs[el3_cards++] = dev;
442 return 0;
443 }
444
el3_pnp_remove(struct pnp_dev * pdev)445 static void el3_pnp_remove(struct pnp_dev *pdev)
446 {
447 el3_common_remove(pnp_get_drvdata(pdev));
448 pnp_set_drvdata(pdev, NULL);
449 }
450
451 #ifdef CONFIG_PM
el3_pnp_suspend(struct pnp_dev * pdev,pm_message_t state)452 static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
453 {
454 return el3_suspend(&pdev->dev, state);
455 }
456
el3_pnp_resume(struct pnp_dev * pdev)457 static int el3_pnp_resume(struct pnp_dev *pdev)
458 {
459 return el3_resume(&pdev->dev);
460 }
461 #endif
462
463 static struct pnp_driver el3_pnp_driver = {
464 .name = "3c509",
465 .id_table = el3_pnp_ids,
466 .probe = el3_pnp_probe,
467 .remove = el3_pnp_remove,
468 #ifdef CONFIG_PM
469 .suspend = el3_pnp_suspend,
470 .resume = el3_pnp_resume,
471 #endif
472 };
473 static int pnp_registered;
474 #endif /* CONFIG_PNP */
475
476 #ifdef CONFIG_EISA
477 static const struct eisa_device_id el3_eisa_ids[] = {
478 { "TCM5090" },
479 { "TCM5091" },
480 { "TCM5092" },
481 { "TCM5093" },
482 { "TCM5094" },
483 { "TCM5095" },
484 { "TCM5098" },
485 { "" }
486 };
487 MODULE_DEVICE_TABLE(eisa, el3_eisa_ids);
488
489 static int el3_eisa_probe (struct device *device);
490
491 static struct eisa_driver el3_eisa_driver = {
492 .id_table = el3_eisa_ids,
493 .driver = {
494 .name = "3c579",
495 .probe = el3_eisa_probe,
496 .remove = el3_device_remove,
497 .suspend = el3_suspend,
498 .resume = el3_resume,
499 }
500 };
501 static int eisa_registered;
502 #endif
503
504 static const struct net_device_ops netdev_ops = {
505 .ndo_open = el3_open,
506 .ndo_stop = el3_close,
507 .ndo_start_xmit = el3_start_xmit,
508 .ndo_get_stats = el3_get_stats,
509 .ndo_set_rx_mode = set_multicast_list,
510 .ndo_tx_timeout = el3_tx_timeout,
511 .ndo_set_mac_address = eth_mac_addr,
512 .ndo_validate_addr = eth_validate_addr,
513 #ifdef CONFIG_NET_POLL_CONTROLLER
514 .ndo_poll_controller = el3_poll_controller,
515 #endif
516 };
517
el3_common_init(struct net_device * dev)518 static int el3_common_init(struct net_device *dev)
519 {
520 struct el3_private *lp = netdev_priv(dev);
521 int err;
522 const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"};
523
524 spin_lock_init(&lp->lock);
525
526 if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */
527 dev->if_port = (dev->mem_start & 0x0f);
528 } else { /* xcvr codes 0/8 */
529 /* use eeprom value, but save user's full-duplex selection */
530 dev->if_port |= (dev->mem_start & 0x08);
531 }
532
533 /* The EL3-specific entries in the device structure. */
534 dev->netdev_ops = &netdev_ops;
535 dev->watchdog_timeo = TX_TIMEOUT;
536 dev->ethtool_ops = ðtool_ops;
537
538 err = register_netdev(dev);
539 if (err) {
540 pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n",
541 dev->base_addr, dev->irq);
542 release_region(dev->base_addr, EL3_IO_EXTENT);
543 return err;
544 }
545
546 pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n",
547 dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)],
548 dev->dev_addr, dev->irq);
549
550 if (el3_debug > 0)
551 pr_info("%s", version);
552 return 0;
553
554 }
555
el3_common_remove(struct net_device * dev)556 static void el3_common_remove (struct net_device *dev)
557 {
558 unregister_netdev (dev);
559 release_region(dev->base_addr, EL3_IO_EXTENT);
560 free_netdev (dev);
561 }
562
563 #ifdef CONFIG_EISA
el3_eisa_probe(struct device * device)564 static int el3_eisa_probe(struct device *device)
565 {
566 short i;
567 int ioaddr, irq, if_port;
568 __be16 phys_addr[3];
569 struct net_device *dev = NULL;
570 struct eisa_device *edev;
571 int err;
572
573 /* Yeepee, The driver framework is calling us ! */
574 edev = to_eisa_device (device);
575 ioaddr = edev->base_addr;
576
577 if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa"))
578 return -EBUSY;
579
580 /* Change the register set to the configuration window 0. */
581 outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD);
582
583 irq = inw(ioaddr + WN0_IRQ) >> 12;
584 if_port = inw(ioaddr + 6)>>14;
585 for (i = 0; i < 3; i++)
586 phys_addr[i] = htons(read_eeprom(ioaddr, i));
587
588 /* Restore the "Product ID" to the EEPROM read register. */
589 read_eeprom(ioaddr, 3);
590
591 dev = alloc_etherdev(sizeof (struct el3_private));
592 if (dev == NULL) {
593 release_region(ioaddr, EL3_IO_EXTENT);
594 return -ENOMEM;
595 }
596
597 SET_NETDEV_DEV(dev, device);
598 netdev_boot_setup_check(dev);
599
600 el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA);
601 eisa_set_drvdata (edev, dev);
602 err = el3_common_init(dev);
603
604 if (err) {
605 eisa_set_drvdata (edev, NULL);
606 free_netdev(dev);
607 return err;
608 }
609
610 el3_devs[el3_cards++] = dev;
611 return 0;
612 }
613 #endif
614
615 /* This remove works for all device types.
616 *
617 * The net dev must be stored in the driver data field */
el3_device_remove(struct device * device)618 static int el3_device_remove(struct device *device)
619 {
620 struct net_device *dev;
621
622 dev = dev_get_drvdata(device);
623
624 el3_common_remove (dev);
625 return 0;
626 }
627
628 /* Read a word from the EEPROM using the regular EEPROM access register.
629 Assume that we are in register window zero.
630 */
read_eeprom(int ioaddr,int index)631 static ushort read_eeprom(int ioaddr, int index)
632 {
633 outw(EEPROM_READ + index, ioaddr + 10);
634 /* Pause for at least 162 us. for the read to take place.
635 Some chips seem to require much longer */
636 mdelay(2);
637 return inw(ioaddr + 12);
638 }
639
640 /* Read a word from the EEPROM when in the ISA ID probe state. */
id_read_eeprom(int index)641 static ushort id_read_eeprom(int index)
642 {
643 int bit, word = 0;
644
645 /* Issue read command, and pause for at least 162 us. for it to complete.
646 Assume extra-fast 16Mhz bus. */
647 outb(EEPROM_READ + index, id_port);
648
649 /* Pause for at least 162 us. for the read to take place. */
650 /* Some chips seem to require much longer */
651 mdelay(4);
652
653 for (bit = 15; bit >= 0; bit--)
654 word = (word << 1) + (inb(id_port) & 0x01);
655
656 if (el3_debug > 3)
657 pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word);
658
659 return word;
660 }
661
662
663 static int
el3_open(struct net_device * dev)664 el3_open(struct net_device *dev)
665 {
666 int ioaddr = dev->base_addr;
667 int i;
668
669 outw(TxReset, ioaddr + EL3_CMD);
670 outw(RxReset, ioaddr + EL3_CMD);
671 outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD);
672
673 i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev);
674 if (i)
675 return i;
676
677 EL3WINDOW(0);
678 if (el3_debug > 3)
679 pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name,
680 dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS));
681
682 el3_up(dev);
683
684 if (el3_debug > 3)
685 pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n",
686 dev->name, dev->irq, inw(ioaddr + EL3_STATUS));
687
688 return 0;
689 }
690
691 static void
el3_tx_timeout(struct net_device * dev)692 el3_tx_timeout (struct net_device *dev)
693 {
694 int ioaddr = dev->base_addr;
695
696 /* Transmitter timeout, serious problems. */
697 pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n",
698 dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS),
699 inw(ioaddr + TX_FREE));
700 dev->stats.tx_errors++;
701 netif_trans_update(dev); /* prevent tx timeout */
702 /* Issue TX_RESET and TX_START commands. */
703 outw(TxReset, ioaddr + EL3_CMD);
704 outw(TxEnable, ioaddr + EL3_CMD);
705 netif_wake_queue(dev);
706 }
707
708
709 static netdev_tx_t
el3_start_xmit(struct sk_buff * skb,struct net_device * dev)710 el3_start_xmit(struct sk_buff *skb, struct net_device *dev)
711 {
712 struct el3_private *lp = netdev_priv(dev);
713 int ioaddr = dev->base_addr;
714 unsigned long flags;
715
716 netif_stop_queue (dev);
717
718 dev->stats.tx_bytes += skb->len;
719
720 if (el3_debug > 4) {
721 pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n",
722 dev->name, skb->len, inw(ioaddr + EL3_STATUS));
723 }
724 /*
725 * We lock the driver against other processors. Note
726 * we don't need to lock versus the IRQ as we suspended
727 * that. This means that we lose the ability to take
728 * an RX during a TX upload. That sucks a bit with SMP
729 * on an original 3c509 (2K buffer)
730 *
731 * Using disable_irq stops us crapping on other
732 * time sensitive devices.
733 */
734
735 spin_lock_irqsave(&lp->lock, flags);
736
737 /* Put out the doubleword header... */
738 outw(skb->len, ioaddr + TX_FIFO);
739 outw(0x00, ioaddr + TX_FIFO);
740 /* ... and the packet rounded to a doubleword. */
741 outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2);
742
743 if (inw(ioaddr + TX_FREE) > 1536)
744 netif_start_queue(dev);
745 else
746 /* Interrupt us when the FIFO has room for max-sized packet. */
747 outw(SetTxThreshold + 1536, ioaddr + EL3_CMD);
748
749 spin_unlock_irqrestore(&lp->lock, flags);
750
751 dev_consume_skb_any (skb);
752
753 /* Clear the Tx status stack. */
754 {
755 short tx_status;
756 int i = 4;
757
758 while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
759 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
760 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
761 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
762 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
763 }
764 }
765 return NETDEV_TX_OK;
766 }
767
768 /* The EL3 interrupt handler. */
769 static irqreturn_t
el3_interrupt(int irq,void * dev_id)770 el3_interrupt(int irq, void *dev_id)
771 {
772 struct net_device *dev = dev_id;
773 struct el3_private *lp;
774 int ioaddr, status;
775 int i = max_interrupt_work;
776
777 lp = netdev_priv(dev);
778 spin_lock(&lp->lock);
779
780 ioaddr = dev->base_addr;
781
782 if (el3_debug > 4) {
783 status = inw(ioaddr + EL3_STATUS);
784 pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status);
785 }
786
787 while ((status = inw(ioaddr + EL3_STATUS)) &
788 (IntLatch | RxComplete | StatsFull)) {
789
790 if (status & RxComplete)
791 el3_rx(dev);
792
793 if (status & TxAvailable) {
794 if (el3_debug > 5)
795 pr_debug(" TX room bit was handled.\n");
796 /* There's room in the FIFO for a full-sized packet. */
797 outw(AckIntr | TxAvailable, ioaddr + EL3_CMD);
798 netif_wake_queue (dev);
799 }
800 if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) {
801 /* Handle all uncommon interrupts. */
802 if (status & StatsFull) /* Empty statistics. */
803 update_stats(dev);
804 if (status & RxEarly) { /* Rx early is unused. */
805 el3_rx(dev);
806 outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
807 }
808 if (status & TxComplete) { /* Really Tx error. */
809 short tx_status;
810 int i = 4;
811
812 while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) {
813 if (tx_status & 0x38) dev->stats.tx_aborted_errors++;
814 if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD);
815 if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD);
816 outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */
817 }
818 }
819 if (status & AdapterFailure) {
820 /* Adapter failure requires Rx reset and reinit. */
821 outw(RxReset, ioaddr + EL3_CMD);
822 /* Set the Rx filter to the current state. */
823 outw(SetRxFilter | RxStation | RxBroadcast
824 | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0)
825 | (dev->flags & IFF_PROMISC ? RxProm : 0),
826 ioaddr + EL3_CMD);
827 outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */
828 outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD);
829 }
830 }
831
832 if (--i < 0) {
833 pr_err("%s: Infinite loop in interrupt, status %4.4x.\n",
834 dev->name, status);
835 /* Clear all interrupts. */
836 outw(AckIntr | 0xFF, ioaddr + EL3_CMD);
837 break;
838 }
839 /* Acknowledge the IRQ. */
840 outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */
841 }
842
843 if (el3_debug > 4) {
844 pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name,
845 inw(ioaddr + EL3_STATUS));
846 }
847 spin_unlock(&lp->lock);
848 return IRQ_HANDLED;
849 }
850
851
852 #ifdef CONFIG_NET_POLL_CONTROLLER
853 /*
854 * Polling receive - used by netconsole and other diagnostic tools
855 * to allow network i/o with interrupts disabled.
856 */
el3_poll_controller(struct net_device * dev)857 static void el3_poll_controller(struct net_device *dev)
858 {
859 disable_irq(dev->irq);
860 el3_interrupt(dev->irq, dev);
861 enable_irq(dev->irq);
862 }
863 #endif
864
865 static struct net_device_stats *
el3_get_stats(struct net_device * dev)866 el3_get_stats(struct net_device *dev)
867 {
868 struct el3_private *lp = netdev_priv(dev);
869 unsigned long flags;
870
871 /*
872 * This is fast enough not to bother with disable IRQ
873 * stuff.
874 */
875
876 spin_lock_irqsave(&lp->lock, flags);
877 update_stats(dev);
878 spin_unlock_irqrestore(&lp->lock, flags);
879 return &dev->stats;
880 }
881
882 /* Update statistics. We change to register window 6, so this should be run
883 single-threaded if the device is active. This is expected to be a rare
884 operation, and it's simpler for the rest of the driver to assume that
885 window 1 is always valid rather than use a special window-state variable.
886 */
update_stats(struct net_device * dev)887 static void update_stats(struct net_device *dev)
888 {
889 int ioaddr = dev->base_addr;
890
891 if (el3_debug > 5)
892 pr_debug(" Updating the statistics.\n");
893 /* Turn off statistics updates while reading. */
894 outw(StatsDisable, ioaddr + EL3_CMD);
895 /* Switch to the stats window, and read everything. */
896 EL3WINDOW(6);
897 dev->stats.tx_carrier_errors += inb(ioaddr + 0);
898 dev->stats.tx_heartbeat_errors += inb(ioaddr + 1);
899 /* Multiple collisions. */ inb(ioaddr + 2);
900 dev->stats.collisions += inb(ioaddr + 3);
901 dev->stats.tx_window_errors += inb(ioaddr + 4);
902 dev->stats.rx_fifo_errors += inb(ioaddr + 5);
903 dev->stats.tx_packets += inb(ioaddr + 6);
904 /* Rx packets */ inb(ioaddr + 7);
905 /* Tx deferrals */ inb(ioaddr + 8);
906 inw(ioaddr + 10); /* Total Rx and Tx octets. */
907 inw(ioaddr + 12);
908
909 /* Back to window 1, and turn statistics back on. */
910 EL3WINDOW(1);
911 outw(StatsEnable, ioaddr + EL3_CMD);
912 }
913
914 static int
el3_rx(struct net_device * dev)915 el3_rx(struct net_device *dev)
916 {
917 int ioaddr = dev->base_addr;
918 short rx_status;
919
920 if (el3_debug > 5)
921 pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n",
922 inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS));
923 while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) {
924 if (rx_status & 0x4000) { /* Error, update stats. */
925 short error = rx_status & 0x3800;
926
927 outw(RxDiscard, ioaddr + EL3_CMD);
928 dev->stats.rx_errors++;
929 switch (error) {
930 case 0x0000: dev->stats.rx_over_errors++; break;
931 case 0x0800: dev->stats.rx_length_errors++; break;
932 case 0x1000: dev->stats.rx_frame_errors++; break;
933 case 0x1800: dev->stats.rx_length_errors++; break;
934 case 0x2000: dev->stats.rx_frame_errors++; break;
935 case 0x2800: dev->stats.rx_crc_errors++; break;
936 }
937 } else {
938 short pkt_len = rx_status & 0x7ff;
939 struct sk_buff *skb;
940
941 skb = netdev_alloc_skb(dev, pkt_len + 5);
942 if (el3_debug > 4)
943 pr_debug("Receiving packet size %d status %4.4x.\n",
944 pkt_len, rx_status);
945 if (skb != NULL) {
946 skb_reserve(skb, 2); /* Align IP on 16 byte */
947
948 /* 'skb->data' points to the start of sk_buff data area. */
949 insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len),
950 (pkt_len + 3) >> 2);
951
952 outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */
953 skb->protocol = eth_type_trans(skb,dev);
954 netif_rx(skb);
955 dev->stats.rx_bytes += pkt_len;
956 dev->stats.rx_packets++;
957 continue;
958 }
959 outw(RxDiscard, ioaddr + EL3_CMD);
960 dev->stats.rx_dropped++;
961 if (el3_debug)
962 pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n",
963 dev->name, pkt_len);
964 }
965 inw(ioaddr + EL3_STATUS); /* Delay. */
966 while (inw(ioaddr + EL3_STATUS) & 0x1000)
967 pr_debug(" Waiting for 3c509 to discard packet, status %x.\n",
968 inw(ioaddr + EL3_STATUS) );
969 }
970
971 return 0;
972 }
973
974 /*
975 * Set or clear the multicast filter for this adaptor.
976 */
977 static void
set_multicast_list(struct net_device * dev)978 set_multicast_list(struct net_device *dev)
979 {
980 unsigned long flags;
981 struct el3_private *lp = netdev_priv(dev);
982 int ioaddr = dev->base_addr;
983 int mc_count = netdev_mc_count(dev);
984
985 if (el3_debug > 1) {
986 static int old;
987 if (old != mc_count) {
988 old = mc_count;
989 pr_debug("%s: Setting Rx mode to %d addresses.\n",
990 dev->name, mc_count);
991 }
992 }
993 spin_lock_irqsave(&lp->lock, flags);
994 if (dev->flags&IFF_PROMISC) {
995 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm,
996 ioaddr + EL3_CMD);
997 }
998 else if (mc_count || (dev->flags&IFF_ALLMULTI)) {
999 outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD);
1000 }
1001 else
1002 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1003 spin_unlock_irqrestore(&lp->lock, flags);
1004 }
1005
1006 static int
el3_close(struct net_device * dev)1007 el3_close(struct net_device *dev)
1008 {
1009 int ioaddr = dev->base_addr;
1010 struct el3_private *lp = netdev_priv(dev);
1011
1012 if (el3_debug > 2)
1013 pr_debug("%s: Shutting down ethercard.\n", dev->name);
1014
1015 el3_down(dev);
1016
1017 free_irq(dev->irq, dev);
1018 /* Switching back to window 0 disables the IRQ. */
1019 EL3WINDOW(0);
1020 if (lp->type != EL3_EISA) {
1021 /* But we explicitly zero the IRQ line select anyway. Don't do
1022 * it on EISA cards, it prevents the module from getting an
1023 * IRQ after unload+reload... */
1024 outw(0x0f00, ioaddr + WN0_IRQ);
1025 }
1026
1027 return 0;
1028 }
1029
1030 static int
el3_link_ok(struct net_device * dev)1031 el3_link_ok(struct net_device *dev)
1032 {
1033 int ioaddr = dev->base_addr;
1034 u16 tmp;
1035
1036 EL3WINDOW(4);
1037 tmp = inw(ioaddr + WN4_MEDIA);
1038 EL3WINDOW(1);
1039 return tmp & (1<<11);
1040 }
1041
1042 static void
el3_netdev_get_ecmd(struct net_device * dev,struct ethtool_link_ksettings * cmd)1043 el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd)
1044 {
1045 u16 tmp;
1046 int ioaddr = dev->base_addr;
1047 u32 supported;
1048
1049 EL3WINDOW(0);
1050 /* obtain current transceiver via WN4_MEDIA? */
1051 tmp = inw(ioaddr + WN0_ADDR_CONF);
1052 switch (tmp >> 14) {
1053 case 0:
1054 cmd->base.port = PORT_TP;
1055 break;
1056 case 1:
1057 cmd->base.port = PORT_AUI;
1058 break;
1059 case 3:
1060 cmd->base.port = PORT_BNC;
1061 default:
1062 break;
1063 }
1064
1065 cmd->base.duplex = DUPLEX_HALF;
1066 supported = 0;
1067 tmp = inw(ioaddr + WN0_CONF_CTRL);
1068 if (tmp & (1<<13))
1069 supported |= SUPPORTED_AUI;
1070 if (tmp & (1<<12))
1071 supported |= SUPPORTED_BNC;
1072 if (tmp & (1<<9)) {
1073 supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half |
1074 SUPPORTED_10baseT_Full; /* hmm... */
1075 EL3WINDOW(4);
1076 tmp = inw(ioaddr + WN4_NETDIAG);
1077 if (tmp & FD_ENABLE)
1078 cmd->base.duplex = DUPLEX_FULL;
1079 }
1080
1081 ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
1082 supported);
1083 cmd->base.speed = SPEED_10;
1084 EL3WINDOW(1);
1085 }
1086
1087 static int
el3_netdev_set_ecmd(struct net_device * dev,const struct ethtool_link_ksettings * cmd)1088 el3_netdev_set_ecmd(struct net_device *dev,
1089 const struct ethtool_link_ksettings *cmd)
1090 {
1091 u16 tmp;
1092 int ioaddr = dev->base_addr;
1093
1094 if (cmd->base.speed != SPEED_10)
1095 return -EINVAL;
1096 if ((cmd->base.duplex != DUPLEX_HALF) &&
1097 (cmd->base.duplex != DUPLEX_FULL))
1098 return -EINVAL;
1099
1100 /* change XCVR type */
1101 EL3WINDOW(0);
1102 tmp = inw(ioaddr + WN0_ADDR_CONF);
1103 switch (cmd->base.port) {
1104 case PORT_TP:
1105 tmp &= ~(3<<14);
1106 dev->if_port = 0;
1107 break;
1108 case PORT_AUI:
1109 tmp |= (1<<14);
1110 dev->if_port = 1;
1111 break;
1112 case PORT_BNC:
1113 tmp |= (3<<14);
1114 dev->if_port = 3;
1115 break;
1116 default:
1117 return -EINVAL;
1118 }
1119
1120 outw(tmp, ioaddr + WN0_ADDR_CONF);
1121 if (dev->if_port == 3) {
1122 /* fire up the DC-DC convertor if BNC gets enabled */
1123 tmp = inw(ioaddr + WN0_ADDR_CONF);
1124 if (tmp & (3 << 14)) {
1125 outw(StartCoax, ioaddr + EL3_CMD);
1126 udelay(800);
1127 } else
1128 return -EIO;
1129 }
1130
1131 EL3WINDOW(4);
1132 tmp = inw(ioaddr + WN4_NETDIAG);
1133 if (cmd->base.duplex == DUPLEX_FULL)
1134 tmp |= FD_ENABLE;
1135 else
1136 tmp &= ~FD_ENABLE;
1137 outw(tmp, ioaddr + WN4_NETDIAG);
1138 EL3WINDOW(1);
1139
1140 return 0;
1141 }
1142
el3_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)1143 static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
1144 {
1145 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
1146 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
1147 }
1148
el3_get_link_ksettings(struct net_device * dev,struct ethtool_link_ksettings * cmd)1149 static int el3_get_link_ksettings(struct net_device *dev,
1150 struct ethtool_link_ksettings *cmd)
1151 {
1152 struct el3_private *lp = netdev_priv(dev);
1153
1154 spin_lock_irq(&lp->lock);
1155 el3_netdev_get_ecmd(dev, cmd);
1156 spin_unlock_irq(&lp->lock);
1157 return 0;
1158 }
1159
el3_set_link_ksettings(struct net_device * dev,const struct ethtool_link_ksettings * cmd)1160 static int el3_set_link_ksettings(struct net_device *dev,
1161 const struct ethtool_link_ksettings *cmd)
1162 {
1163 struct el3_private *lp = netdev_priv(dev);
1164 int ret;
1165
1166 spin_lock_irq(&lp->lock);
1167 ret = el3_netdev_set_ecmd(dev, cmd);
1168 spin_unlock_irq(&lp->lock);
1169 return ret;
1170 }
1171
el3_get_link(struct net_device * dev)1172 static u32 el3_get_link(struct net_device *dev)
1173 {
1174 struct el3_private *lp = netdev_priv(dev);
1175 u32 ret;
1176
1177 spin_lock_irq(&lp->lock);
1178 ret = el3_link_ok(dev);
1179 spin_unlock_irq(&lp->lock);
1180 return ret;
1181 }
1182
el3_get_msglevel(struct net_device * dev)1183 static u32 el3_get_msglevel(struct net_device *dev)
1184 {
1185 return el3_debug;
1186 }
1187
el3_set_msglevel(struct net_device * dev,u32 v)1188 static void el3_set_msglevel(struct net_device *dev, u32 v)
1189 {
1190 el3_debug = v;
1191 }
1192
1193 static const struct ethtool_ops ethtool_ops = {
1194 .get_drvinfo = el3_get_drvinfo,
1195 .get_link = el3_get_link,
1196 .get_msglevel = el3_get_msglevel,
1197 .set_msglevel = el3_set_msglevel,
1198 .get_link_ksettings = el3_get_link_ksettings,
1199 .set_link_ksettings = el3_set_link_ksettings,
1200 };
1201
1202 static void
el3_down(struct net_device * dev)1203 el3_down(struct net_device *dev)
1204 {
1205 int ioaddr = dev->base_addr;
1206
1207 netif_stop_queue(dev);
1208
1209 /* Turn off statistics ASAP. We update lp->stats below. */
1210 outw(StatsDisable, ioaddr + EL3_CMD);
1211
1212 /* Disable the receiver and transmitter. */
1213 outw(RxDisable, ioaddr + EL3_CMD);
1214 outw(TxDisable, ioaddr + EL3_CMD);
1215
1216 if (dev->if_port == 3)
1217 /* Turn off thinnet power. Green! */
1218 outw(StopCoax, ioaddr + EL3_CMD);
1219 else if (dev->if_port == 0) {
1220 /* Disable link beat and jabber, if_port may change here next open(). */
1221 EL3WINDOW(4);
1222 outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA);
1223 }
1224
1225 outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD);
1226
1227 update_stats(dev);
1228 }
1229
1230 static void
el3_up(struct net_device * dev)1231 el3_up(struct net_device *dev)
1232 {
1233 int i, sw_info, net_diag;
1234 int ioaddr = dev->base_addr;
1235
1236 /* Activating the board required and does no harm otherwise */
1237 outw(0x0001, ioaddr + 4);
1238
1239 /* Set the IRQ line. */
1240 outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ);
1241
1242 /* Set the station address in window 2 each time opened. */
1243 EL3WINDOW(2);
1244
1245 for (i = 0; i < 6; i++)
1246 outb(dev->dev_addr[i], ioaddr + i);
1247
1248 if ((dev->if_port & 0x03) == 3) /* BNC interface */
1249 /* Start the thinnet transceiver. We should really wait 50ms...*/
1250 outw(StartCoax, ioaddr + EL3_CMD);
1251 else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */
1252 /* Combine secondary sw_info word (the adapter level) and primary
1253 sw_info word (duplex setting plus other useless bits) */
1254 EL3WINDOW(0);
1255 sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) |
1256 (read_eeprom(ioaddr, 0x0d) & 0xBff0);
1257
1258 EL3WINDOW(4);
1259 net_diag = inw(ioaddr + WN4_NETDIAG);
1260 net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */
1261 pr_info("%s: ", dev->name);
1262 switch (dev->if_port & 0x0c) {
1263 case 12:
1264 /* force full-duplex mode if 3c5x9b */
1265 if (sw_info & 0x000f) {
1266 pr_cont("Forcing 3c5x9b full-duplex mode");
1267 break;
1268 }
1269 /* fall through */
1270 case 8:
1271 /* set full-duplex mode based on eeprom config setting */
1272 if ((sw_info & 0x000f) && (sw_info & 0x8000)) {
1273 pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)");
1274 break;
1275 }
1276 /* fall through */
1277 default:
1278 /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */
1279 pr_cont("Setting 3c5x9/3c5x9B half-duplex mode");
1280 net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */
1281 }
1282
1283 outw(net_diag, ioaddr + WN4_NETDIAG);
1284 pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info);
1285 if (el3_debug > 3)
1286 pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag);
1287 /* Enable link beat and jabber check. */
1288 outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA);
1289 }
1290
1291 /* Switch to the stats window, and clear all stats by reading. */
1292 outw(StatsDisable, ioaddr + EL3_CMD);
1293 EL3WINDOW(6);
1294 for (i = 0; i < 9; i++)
1295 inb(ioaddr + i);
1296 inw(ioaddr + 10);
1297 inw(ioaddr + 12);
1298
1299 /* Switch to register set 1 for normal use. */
1300 EL3WINDOW(1);
1301
1302 /* Accept b-case and phys addr only. */
1303 outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD);
1304 outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */
1305
1306 outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
1307 outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
1308 /* Allow status bits to be seen. */
1309 outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD);
1310 /* Ack all pending events, and set active indicator mask. */
1311 outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
1312 ioaddr + EL3_CMD);
1313 outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull,
1314 ioaddr + EL3_CMD);
1315
1316 netif_start_queue(dev);
1317 }
1318
1319 /* Power Management support functions */
1320 #ifdef CONFIG_PM
1321
1322 static int
el3_suspend(struct device * pdev,pm_message_t state)1323 el3_suspend(struct device *pdev, pm_message_t state)
1324 {
1325 unsigned long flags;
1326 struct net_device *dev;
1327 struct el3_private *lp;
1328 int ioaddr;
1329
1330 dev = dev_get_drvdata(pdev);
1331 lp = netdev_priv(dev);
1332 ioaddr = dev->base_addr;
1333
1334 spin_lock_irqsave(&lp->lock, flags);
1335
1336 if (netif_running(dev))
1337 netif_device_detach(dev);
1338
1339 el3_down(dev);
1340 outw(PowerDown, ioaddr + EL3_CMD);
1341
1342 spin_unlock_irqrestore(&lp->lock, flags);
1343 return 0;
1344 }
1345
1346 static int
el3_resume(struct device * pdev)1347 el3_resume(struct device *pdev)
1348 {
1349 unsigned long flags;
1350 struct net_device *dev;
1351 struct el3_private *lp;
1352 int ioaddr;
1353
1354 dev = dev_get_drvdata(pdev);
1355 lp = netdev_priv(dev);
1356 ioaddr = dev->base_addr;
1357
1358 spin_lock_irqsave(&lp->lock, flags);
1359
1360 outw(PowerUp, ioaddr + EL3_CMD);
1361 EL3WINDOW(0);
1362 el3_up(dev);
1363
1364 if (netif_running(dev))
1365 netif_device_attach(dev);
1366
1367 spin_unlock_irqrestore(&lp->lock, flags);
1368 return 0;
1369 }
1370
1371 #endif /* CONFIG_PM */
1372
1373 module_param(debug,int, 0);
1374 module_param_hw_array(irq, int, irq, NULL, 0);
1375 module_param(max_interrupt_work, int, 0);
1376 MODULE_PARM_DESC(debug, "debug level (0-6)");
1377 MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
1378 MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt");
1379 #ifdef CONFIG_PNP
1380 module_param(nopnp, int, 0);
1381 MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)");
1382 #endif /* CONFIG_PNP */
1383 MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver");
1384 MODULE_LICENSE("GPL");
1385
el3_init_module(void)1386 static int __init el3_init_module(void)
1387 {
1388 int ret = 0;
1389
1390 if (debug >= 0)
1391 el3_debug = debug;
1392
1393 #ifdef CONFIG_PNP
1394 if (!nopnp) {
1395 ret = pnp_register_driver(&el3_pnp_driver);
1396 if (!ret)
1397 pnp_registered = 1;
1398 }
1399 #endif
1400 /* Select an open I/O location at 0x1*0 to do ISA contention select. */
1401 /* Start with 0x110 to avoid some sound cards.*/
1402 for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) {
1403 if (!request_region(id_port, 1, "3c509-control"))
1404 continue;
1405 outb(0x00, id_port);
1406 outb(0xff, id_port);
1407 if (inb(id_port) & 0x01)
1408 break;
1409 else
1410 release_region(id_port, 1);
1411 }
1412 if (id_port >= 0x200) {
1413 id_port = 0;
1414 pr_err("No I/O port available for 3c509 activation.\n");
1415 } else {
1416 ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS);
1417 if (!ret)
1418 isa_registered = 1;
1419 }
1420 #ifdef CONFIG_EISA
1421 ret = eisa_driver_register(&el3_eisa_driver);
1422 if (!ret)
1423 eisa_registered = 1;
1424 #endif
1425
1426 #ifdef CONFIG_PNP
1427 if (pnp_registered)
1428 ret = 0;
1429 #endif
1430 if (isa_registered)
1431 ret = 0;
1432 #ifdef CONFIG_EISA
1433 if (eisa_registered)
1434 ret = 0;
1435 #endif
1436 return ret;
1437 }
1438
el3_cleanup_module(void)1439 static void __exit el3_cleanup_module(void)
1440 {
1441 #ifdef CONFIG_PNP
1442 if (pnp_registered)
1443 pnp_unregister_driver(&el3_pnp_driver);
1444 #endif
1445 if (isa_registered)
1446 isa_unregister_driver(&el3_isa_driver);
1447 if (id_port)
1448 release_region(id_port, 1);
1449 #ifdef CONFIG_EISA
1450 if (eisa_registered)
1451 eisa_driver_unregister(&el3_eisa_driver);
1452 #endif
1453 }
1454
1455 module_init (el3_init_module);
1456 module_exit (el3_cleanup_module);
1457
