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[PATCH] Remove hosthw.h from rio (unused file)
[wrt350n-kernel.git] / drivers / net / wireless / arlan-main.c
blob0e1ac338cac1a7283e46d4b7145ce7864550edfc
1 /*
2 * Copyright (C) 1997 Cullen Jennings
3 * Copyright (C) 1998 Elmer Joandiu, elmer@ylenurme.ee
4 * GNU General Public License applies
5 * This module provides support for the Arlan 655 card made by Aironet
6 */
7
8 #include <linux/config.h>
9 #include "arlan.h"
10
11 #if BITS_PER_LONG != 32
12 # error FIXME: this driver requires a 32-bit platform
13 #endif
14
15 static const char *arlan_version = "C.Jennigs 97 & Elmer.Joandi@ut.ee Oct'98, http://www.ylenurme.ee/~elmer/655/";
16
17 struct net_device *arlan_device[MAX_ARLANS];
18
19 static int SID = SIDUNKNOWN;
20 static int radioNodeId = radioNodeIdUNKNOWN;
21 static char encryptionKey[12] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'};
22 int arlan_debug = debugUNKNOWN;
23 static int spreadingCode = spreadingCodeUNKNOWN;
24 static int channelNumber = channelNumberUNKNOWN;
25 static int channelSet = channelSetUNKNOWN;
26 static int systemId = systemIdUNKNOWN;
27 static int registrationMode = registrationModeUNKNOWN;
28 static int keyStart;
29 static int tx_delay_ms;
30 static int retries = 5;
31 static int tx_queue_len = 1;
32 static int arlan_EEPROM_bad;
33
34 #ifdef ARLAN_DEBUGGING
35
36 static int testMemory = testMemoryUNKNOWN;
37 static int irq = irqUNKNOWN;
38 static int txScrambled = 1;
39 static int mdebug;
40
41 module_param(irq, int, 0);
42 module_param(mdebug, int, 0);
43 module_param(testMemory, int, 0);
44 module_param(txScrambled, int, 0);
45 MODULE_PARM_DESC(irq, "(unused)");
46 MODULE_PARM_DESC(testMemory, "(unused)");
47 MODULE_PARM_DESC(mdebug, "Arlan multicast debugging (0-1)");
48 #endif
49
50 module_param_named(debug, arlan_debug, int, 0);
51 module_param(spreadingCode, int, 0);
52 module_param(channelNumber, int, 0);
53 module_param(channelSet, int, 0);
54 module_param(systemId, int, 0);
55 module_param(registrationMode, int, 0);
56 module_param(radioNodeId, int, 0);
57 module_param(SID, int, 0);
58 module_param(keyStart, int, 0);
59 module_param(tx_delay_ms, int, 0);
60 module_param(retries, int, 0);
61 module_param(tx_queue_len, int, 0);
62 module_param_named(EEPROM_bad, arlan_EEPROM_bad, int, 0);
63 MODULE_PARM_DESC(debug, "Arlan debug enable (0-1)");
64 MODULE_PARM_DESC(retries, "Arlan maximum packet retransmisions");
65 #ifdef ARLAN_ENTRY_EXIT_DEBUGGING
66 static int arlan_entry_debug;
67 static int arlan_exit_debug;
68 static int arlan_entry_and_exit_debug;
69 module_param_named(entry_debug, arlan_entry_debug, int, 0);
70 module_param_named(exit_debug, arlan_exit_debug, int, 0);
71 module_param_named(entry_and_exit_debug, arlan_entry_and_exit_debug, int, 0);
72 MODULE_PARM_DESC(entry_debug, "Arlan driver function entry debugging");
73 MODULE_PARM_DESC(exit_debug, "Arlan driver function exit debugging");
74 MODULE_PARM_DESC(entry_and_exit_debug, "Arlan driver function entry and exit debugging");
75 #endif
76
77 struct arlan_conf_stru arlan_conf[MAX_ARLANS];
78 static int arlans_found;
79
80 static int arlan_open(struct net_device *dev);
81 static int arlan_tx(struct sk_buff *skb, struct net_device *dev);
82 static irqreturn_t arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs);
83 static int arlan_close(struct net_device *dev);
84 static struct net_device_stats *
85 arlan_statistics (struct net_device *dev);
86 static void arlan_set_multicast (struct net_device *dev);
87 static int arlan_hw_tx (struct net_device* dev, char *buf, int length );
88 static int arlan_hw_config (struct net_device * dev);
89 static void arlan_tx_done_interrupt (struct net_device * dev, int status);
90 static void arlan_rx_interrupt (struct net_device * dev, u_char rxStatus, u_short, u_short);
91 static void arlan_process_interrupt (struct net_device * dev);
92 static void arlan_tx_timeout (struct net_device *dev);
93
94 static inline long us2ticks(int us)
95 {
96 return us * (1000000 / HZ);
97 }
98
99
100 #ifdef ARLAN_ENTRY_EXIT_DEBUGGING
101 #define ARLAN_DEBUG_ENTRY(name) \
102 {\
103 struct timeval timev;\
104 do_gettimeofday(&timev);\
105 if (arlan_entry_debug || arlan_entry_and_exit_debug)\
106 printk("--->>>" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec));\
107 }
108 #define ARLAN_DEBUG_EXIT(name) \
109 {\
110 struct timeval timev;\
111 do_gettimeofday(&timev);\
112 if (arlan_exit_debug || arlan_entry_and_exit_debug)\
113 printk("<<<---" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec) );\
114 }
115 #else
116 #define ARLAN_DEBUG_ENTRY(name)
117 #define ARLAN_DEBUG_EXIT(name)
118 #endif
119
120
121 #define arlan_interrupt_ack(dev)\
122 clearClearInterrupt(dev);\
123 setClearInterrupt(dev);
124
125 static inline int arlan_drop_tx(struct net_device *dev)
126 {
127 struct arlan_private *priv = netdev_priv(dev);
128
129 priv->stats.tx_errors++;
130 if (priv->Conf->tx_delay_ms)
131 {
132 priv->tx_done_delayed = jiffies + priv->Conf->tx_delay_ms * HZ / 1000 + 1;
133 }
134 else
135 {
136 priv->waiting_command_mask &= ~ARLAN_COMMAND_TX;
137 TXHEAD(dev).offset = 0;
138 TXTAIL(dev).offset = 0;
139 priv->txLast = 0;
140 priv->bad = 0;
141 if (!priv->under_reset && !priv->under_config)
142 netif_wake_queue (dev);
143 }
144 return 1;
145 }
146
147
148 int arlan_command(struct net_device *dev, int command_p)
149 {
150 struct arlan_private *priv = netdev_priv(dev);
151 volatile struct arlan_shmem __iomem *arlan = priv->card;
152 struct arlan_conf_stru *conf = priv->Conf;
153 int udelayed = 0;
154 int i = 0;
155 unsigned long flags;
156
157 ARLAN_DEBUG_ENTRY("arlan_command");
158
159 if (priv->card_polling_interval)
160 priv->card_polling_interval = 1;
161
162 if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
163 printk(KERN_DEBUG "arlan_command, %lx commandByte %x waiting %lx incoming %x \n",
164 jiffies, READSHMB(arlan->commandByte),
165 priv->waiting_command_mask, command_p);
166
167 priv->waiting_command_mask |= command_p;
168
169 if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
170 if (time_after(jiffies, priv->lastReset + 5 * HZ))
171 priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET;
172
173 if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ACK)
174 {
175 arlan_interrupt_ack(dev);
176 priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ACK;
177 }
178 if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ENABLE)
179 {
180 setInterruptEnable(dev);
181 priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ENABLE;
182 }
183
184 /* Card access serializing lock */
185 spin_lock_irqsave(&priv->lock, flags);
186
187 /* Check cards status and waiting */
188
189 if (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW))
190 {
191 while (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW))
192 {
193 if (READSHMB(arlan->resetFlag) ||
194 READSHMB(arlan->commandByte)) /* ||
195 (readControlRegister(dev) & ARLAN_ACCESS))
196 */
197 udelay(40);
198 else
199 priv->waiting_command_mask &= ~(ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW);
200
201 udelayed++;
202
203 if (priv->waiting_command_mask & ARLAN_COMMAND_LONG_WAIT_NOW)
204 {
205 if (udelayed * 40 > 1000000)
206 {
207 printk(KERN_ERR "%s long wait too long \n", dev->name);
208 priv->waiting_command_mask |= ARLAN_COMMAND_RESET;
209 break;
210 }
211 }
212 else if (priv->waiting_command_mask & ARLAN_COMMAND_WAIT_NOW)
213 {
214 if (udelayed * 40 > 1000)
215 {
216 printk(KERN_ERR "%s short wait too long \n", dev->name);
217 goto bad_end;
218 }
219 }
220 }
221 }
222 else
223 {
224 i = 0;
225 while ((READSHMB(arlan->resetFlag) ||
226 READSHMB(arlan->commandByte)) &&
227 conf->pre_Command_Wait > (i++) * 10)
228 udelay(10);
229
230
231 if ((READSHMB(arlan->resetFlag) ||
232 READSHMB(arlan->commandByte)) &&
233 !(priv->waiting_command_mask & ARLAN_COMMAND_RESET))
234 {
235 goto card_busy_end;
236 }
237 }
238 if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
239 priv->under_reset = 1;
240 if (priv->waiting_command_mask & ARLAN_COMMAND_CONF)
241 priv->under_config = 1;
242
243 /* Issuing command */
244 arlan_lock_card_access(dev);
245 if (priv->waiting_command_mask & ARLAN_COMMAND_POWERUP)
246 {
247 // if (readControlRegister(dev) & (ARLAN_ACCESS && ARLAN_POWER))
248 setPowerOn(dev);
249 arlan_interrupt_lancpu(dev);
250 priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERUP;
251 priv->waiting_command_mask |= ARLAN_COMMAND_RESET;
252 priv->card_polling_interval = HZ / 10;
253 }
254 else if (priv->waiting_command_mask & ARLAN_COMMAND_ACTIVATE)
255 {
256 WRITESHMB(arlan->commandByte, ARLAN_COM_ACTIVATE);
257 arlan_interrupt_lancpu(dev);
258 priv->waiting_command_mask &= ~ARLAN_COMMAND_ACTIVATE;
259 priv->card_polling_interval = HZ / 10;
260 }
261 else if (priv->waiting_command_mask & ARLAN_COMMAND_RX_ABORT)
262 {
263 if (priv->rx_command_given)
264 {
265 WRITESHMB(arlan->commandByte, ARLAN_COM_RX_ABORT);
266 arlan_interrupt_lancpu(dev);
267 priv->rx_command_given = 0;
268 }
269 priv->waiting_command_mask &= ~ARLAN_COMMAND_RX_ABORT;
270 priv->card_polling_interval = 1;
271 }
272 else if (priv->waiting_command_mask & ARLAN_COMMAND_TX_ABORT)
273 {
274 if (priv->tx_command_given)
275 {
276 WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ABORT);
277 arlan_interrupt_lancpu(dev);
278 priv->tx_command_given = 0;
279 }
280 priv->waiting_command_mask &= ~ARLAN_COMMAND_TX_ABORT;
281 priv->card_polling_interval = 1;
282 }
283 else if (priv->waiting_command_mask & ARLAN_COMMAND_RESET)
284 {
285 priv->under_reset=1;
286 netif_stop_queue (dev);
287
288 arlan_drop_tx(dev);
289 if (priv->tx_command_given || priv->rx_command_given)
290 {
291 printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name);
292 }
293 netif_stop_queue (dev);
294 if (arlan_debug & ARLAN_DEBUG_RESET)
295 printk(KERN_ERR "%s: Doing chip reset\n", dev->name);
296 priv->lastReset = jiffies;
297 WRITESHM(arlan->commandByte, 0, u_char);
298 /* hold card in reset state */
299 setHardwareReset(dev);
300 /* set reset flag and then release reset */
301 WRITESHM(arlan->resetFlag, 0xff, u_char);
302 clearChannelAttention(dev);
303 clearHardwareReset(dev);
304 priv->card_polling_interval = HZ / 4;
305 priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET;
306 priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK;
307 // priv->waiting_command_mask |= ARLAN_COMMAND_INT_RENABLE;
308 // priv->waiting_command_mask |= ARLAN_COMMAND_RX;
309 }
310 else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RACK)
311 {
312 clearHardwareReset(dev);
313 clearClearInterrupt(dev);
314 setClearInterrupt(dev);
315 setInterruptEnable(dev);
316 priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RACK;
317 priv->waiting_command_mask |= ARLAN_COMMAND_CONF;
318 priv->under_config = 1;
319 priv->under_reset = 0;
320 }
321 else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RENABLE)
322 {
323 setInterruptEnable(dev);
324 priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RENABLE;
325 }
326 else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF)
327 {
328 if (priv->tx_command_given || priv->rx_command_given)
329 {
330 printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name);
331 }
332 arlan_drop_tx(dev);
333 setInterruptEnable(dev);
334 arlan_hw_config(dev);
335 arlan_interrupt_lancpu(dev);
336 priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF;
337 priv->card_polling_interval = HZ / 10;
338 // priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK;
339 // priv->waiting_command_mask |= ARLAN_COMMAND_INT_ENABLE;
340 priv->waiting_command_mask |= ARLAN_COMMAND_CONF_WAIT;
341 }
342 else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF_WAIT)
343 {
344 if (READSHMB(arlan->configuredStatusFlag) != 0 &&
345 READSHMB(arlan->diagnosticInfo) == 0xff)
346 {
347 priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF_WAIT;
348 priv->waiting_command_mask |= ARLAN_COMMAND_RX;
349 priv->waiting_command_mask |= ARLAN_COMMAND_TBUSY_CLEAR;
350 priv->card_polling_interval = HZ / 10;
351 priv->tx_command_given = 0;
352 priv->under_config = 0;
353 }
354 else
355 {
356 priv->card_polling_interval = 1;
357 if (arlan_debug & ARLAN_DEBUG_TIMING)
358 printk(KERN_ERR "configure delayed \n");
359 }
360 }
361 else if (priv->waiting_command_mask & ARLAN_COMMAND_RX)
362 {
363 if (!registrationBad(dev))
364 {
365 setInterruptEnable(dev);
366 memset_io(arlan->commandParameter, 0, 0xf);
367 WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_RX_ENABLE);
368 WRITESHMB(arlan->commandParameter[0], conf->rxParameter);
369 arlan_interrupt_lancpu(dev);
370 priv->rx_command_given = 0; // mnjah, bad
371 priv->waiting_command_mask &= ~ARLAN_COMMAND_RX;
372 priv->card_polling_interval = 1;
373 }
374 else
375 priv->card_polling_interval = 2;
376 }
377 else if (priv->waiting_command_mask & ARLAN_COMMAND_TBUSY_CLEAR)
378 {
379 if ( !registrationBad(dev) &&
380 (netif_queue_stopped(dev) || !netif_running(dev)) )
381 {
382 priv->waiting_command_mask &= ~ARLAN_COMMAND_TBUSY_CLEAR;
383 netif_wake_queue (dev);
384 }
385 }
386 else if (priv->waiting_command_mask & ARLAN_COMMAND_TX)
387 {
388 if (!test_and_set_bit(0, (void *) &priv->tx_command_given))
389 {
390 if (time_after(jiffies,
391 priv->tx_last_sent + us2ticks(conf->rx_tweak1))
392 || time_before(jiffies,
393 priv->last_rx_int_ack_time + us2ticks(conf->rx_tweak2)))
394 {
395 setInterruptEnable(dev);
396 memset_io(arlan->commandParameter, 0, 0xf);
397 WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ENABLE | ARLAN_COM_INT);
398 memcpy_toio(arlan->commandParameter, &TXLAST(dev), 14);
399 // for ( i=1 ; i < 15 ; i++) printk("%02x:",READSHMB(arlan->commandParameter[i]));
400 priv->tx_last_sent = jiffies;
401 arlan_interrupt_lancpu(dev);
402 priv->tx_command_given = 1;
403 priv->waiting_command_mask &= ~ARLAN_COMMAND_TX;
404 priv->card_polling_interval = 1;
405 }
406 else
407 {
408 priv->tx_command_given = 0;
409 priv->card_polling_interval = 1;
410 }
411 }
412 else if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
413 printk(KERN_ERR "tx command when tx chain locked \n");
414 }
415 else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOPINT)
416 {
417 {
418 WRITESHMB(arlan->commandByte, ARLAN_COM_NOP | ARLAN_COM_INT);
419 }
420 arlan_interrupt_lancpu(dev);
421 priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOPINT;
422 priv->card_polling_interval = HZ / 3;
423 }
424 else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOP)
425 {
426 WRITESHMB(arlan->commandByte, ARLAN_COM_NOP);
427 arlan_interrupt_lancpu(dev);
428 priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOP;
429 priv->card_polling_interval = HZ / 3;
430 }
431 else if (priv->waiting_command_mask & ARLAN_COMMAND_SLOW_POLL)
432 {
433 WRITESHMB(arlan->commandByte, ARLAN_COM_GOTO_SLOW_POLL);
434 arlan_interrupt_lancpu(dev);
435 priv->waiting_command_mask &= ~ARLAN_COMMAND_SLOW_POLL;
436 priv->card_polling_interval = HZ / 3;
437 }
438 else if (priv->waiting_command_mask & ARLAN_COMMAND_POWERDOWN)
439 {
440 setPowerOff(dev);
441 if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
442 printk(KERN_WARNING "%s: Arlan Going Standby\n", dev->name);
443 priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERDOWN;
444 priv->card_polling_interval = 3 * HZ;
445 }
446 arlan_unlock_card_access(dev);
447 for (i = 0; READSHMB(arlan->commandByte) && i < 20; i++)
448 udelay(10);
449 if (READSHMB(arlan->commandByte))
450 if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
451 printk(KERN_ERR "card busy leaving command %lx\n", priv->waiting_command_mask);
452
453 spin_unlock_irqrestore(&priv->lock, flags);
454 ARLAN_DEBUG_EXIT("arlan_command");
455 priv->last_command_buff_free_time = jiffies;
456 return 0;
457
458 card_busy_end:
459 if (time_after(jiffies, priv->last_command_buff_free_time + HZ))
460 priv->waiting_command_mask |= ARLAN_COMMAND_CLEAN_AND_RESET;
461
462 if (arlan_debug & ARLAN_DEBUG_CARD_STATE)
463 printk(KERN_ERR "%s arlan_command card busy end \n", dev->name);
464 spin_unlock_irqrestore(&priv->lock, flags);
465 ARLAN_DEBUG_EXIT("arlan_command");
466 return 1;
467
468 bad_end:
469 printk(KERN_ERR "%s arlan_command bad end \n", dev->name);
470
471 spin_unlock_irqrestore(&priv->lock, flags);
472 ARLAN_DEBUG_EXIT("arlan_command");
473
474 return -1;
475 }
476
477 static inline void arlan_command_process(struct net_device *dev)
478 {
479 struct arlan_private *priv = netdev_priv(dev);
480
481 int times = 0;
482 while (priv->waiting_command_mask && times < 8)
483 {
484 if (priv->waiting_command_mask)
485 {
486 if (arlan_command(dev, 0))
487 break;
488 times++;
489 }
490 /* if long command, we won't repeat trying */ ;
491 if (priv->card_polling_interval > 1)
492 break;
493 times++;
494 }
495 }
496
497
498 static inline void arlan_retransmit_now(struct net_device *dev)
499 {
500 struct arlan_private *priv = netdev_priv(dev);
501
502
503 ARLAN_DEBUG_ENTRY("arlan_retransmit_now");
504 if (TXLAST(dev).offset == 0)
505 {
506 if (TXHEAD(dev).offset)
507 {
508 priv->txLast = 0;
509 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to head \n");
510
511 }
512 else if (TXTAIL(dev).offset)
513 {
514 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to tail \n");
515 priv->txLast = 1;
516 }
517 else
518 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "ReTransmit buff empty");
519 netif_wake_queue (dev);
520 return;
521
522 }
523 arlan_command(dev, ARLAN_COMMAND_TX);
524
525 priv->Conf->driverRetransmissions++;
526 priv->retransmissions++;
527
528 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("Retransmit %d bytes \n", TXLAST(dev).length);
529
530 ARLAN_DEBUG_EXIT("arlan_retransmit_now");
531 }
532
533
534
535 static void arlan_registration_timer(unsigned long data)
536 {
537 struct net_device *dev = (struct net_device *) data;
538 struct arlan_private *priv = netdev_priv(dev);
539 int bh_mark_needed = 0;
540 int next_tick = 1;
541 long lostTime = ((long)jiffies - (long)priv->registrationLastSeen)
542 * (1000/HZ);
543
544 if (registrationBad(dev))
545 {
546 priv->registrationLostCount++;
547 if (lostTime > 7000 && lostTime < 7200)
548 {
549 printk(KERN_NOTICE "%s registration Lost \n", dev->name);
550 }
551 if (lostTime / priv->reRegisterExp > 2000)
552 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF);
553 if (lostTime / (priv->reRegisterExp) > 3500)
554 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
555 if (priv->reRegisterExp < 400)
556 priv->reRegisterExp += 2;
557 if (lostTime > 7200)
558 {
559 next_tick = HZ;
560 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
561 }
562 }
563 else
564 {
565 if (priv->Conf->registrationMode && lostTime > 10000 &&
566 priv->registrationLostCount)
567 {
568 printk(KERN_NOTICE "%s registration is back after %ld milliseconds\n",
569 dev->name, lostTime);
570 }
571 priv->registrationLastSeen = jiffies;
572 priv->registrationLostCount = 0;
573 priv->reRegisterExp = 1;
574 if (!netif_running(dev) )
575 netif_wake_queue(dev);
576 if (time_after(priv->tx_last_sent,priv->tx_last_cleared) &&
577 time_after(jiffies, priv->tx_last_sent * 5*HZ) ){
578 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
579 priv->tx_last_cleared = jiffies;
580 }
581 }
582
583
584 if (!registrationBad(dev) && priv->ReTransmitRequested)
585 {
586 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
587 printk(KERN_ERR "Retransmit from timer \n");
588 priv->ReTransmitRequested = 0;
589 arlan_retransmit_now(dev);
590 }
591 if (!registrationBad(dev) &&
592 time_after(jiffies, priv->tx_done_delayed) &&
593 priv->tx_done_delayed != 0)
594 {
595 TXLAST(dev).offset = 0;
596 if (priv->txLast)
597 priv->txLast = 0;
598 else if (TXTAIL(dev).offset)
599 priv->txLast = 1;
600 if (TXLAST(dev).offset)
601 {
602 arlan_retransmit_now(dev);
603 dev->trans_start = jiffies;
604 }
605 if (!(TXHEAD(dev).offset && TXTAIL(dev).offset))
606 {
607 netif_wake_queue (dev);
608 }
609 priv->tx_done_delayed = 0;
610 bh_mark_needed = 1;
611 }
612 if (bh_mark_needed)
613 {
614 netif_wake_queue (dev);
615 }
616 arlan_process_interrupt(dev);
617
618 if (next_tick < priv->card_polling_interval)
619 next_tick = priv->card_polling_interval;
620
621 priv->timer.expires = jiffies + next_tick;
622
623 add_timer(&priv->timer);
624 }
625
626
627 #ifdef ARLAN_DEBUGGING
628
629 static void arlan_print_registers(struct net_device *dev, int line)
630 {
631 struct arlan_private *priv = netdev_priv(dev);
632 volatile struct arlan_shmem *arlan = priv->card;
633
634 u_char hostcpuLock, lancpuLock, controlRegister, cntrlRegImage,
635 txStatus, rxStatus, interruptInProgress, commandByte;
636
637
638 ARLAN_DEBUG_ENTRY("arlan_print_registers");
639 READSHM(interruptInProgress, arlan->interruptInProgress, u_char);
640 READSHM(hostcpuLock, arlan->hostcpuLock, u_char);
641 READSHM(lancpuLock, arlan->lancpuLock, u_char);
642 READSHM(controlRegister, arlan->controlRegister, u_char);
643 READSHM(cntrlRegImage, arlan->cntrlRegImage, u_char);
644 READSHM(txStatus, arlan->txStatus, u_char);
645 READSHM(rxStatus, arlan->rxStatus, u_char);
646 READSHM(commandByte, arlan->commandByte, u_char);
647
648 printk(KERN_WARNING "line %04d IP %02x HL %02x LL %02x CB %02x CR %02x CRI %02x TX %02x RX %02x\n",
649 line, interruptInProgress, hostcpuLock, lancpuLock, commandByte,
650 controlRegister, cntrlRegImage, txStatus, rxStatus);
651
652 ARLAN_DEBUG_EXIT("arlan_print_registers");
653 }
654 #endif
655
656
657 static int arlan_hw_tx(struct net_device *dev, char *buf, int length)
658 {
659 int i;
660
661 struct arlan_private *priv = netdev_priv(dev);
662 volatile struct arlan_shmem __iomem *arlan = priv->card;
663 struct arlan_conf_stru *conf = priv->Conf;
664
665 int tailStarts = 0x800;
666 int headEnds = 0x0;
667
668
669 ARLAN_DEBUG_ENTRY("arlan_hw_tx");
670 if (TXHEAD(dev).offset)
671 headEnds = (((TXHEAD(dev).offset + TXHEAD(dev).length - offsetof(struct arlan_shmem, txBuffer)) / 64) + 1) * 64;
672 if (TXTAIL(dev).offset)
673 tailStarts = 0x800 - (((TXTAIL(dev).offset - offsetof(struct arlan_shmem, txBuffer)) / 64) + 2) * 64;
674
675
676 if (!TXHEAD(dev).offset && length < tailStarts)
677 {
678 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
679 printk(KERN_ERR "TXHEAD insert, tailStart %d\n", tailStarts);
680
681 TXHEAD(dev).offset =
682 offsetof(struct arlan_shmem, txBuffer);
683 TXHEAD(dev).length = length - ARLAN_FAKE_HDR_LEN;
684 for (i = 0; i < 6; i++)
685 TXHEAD(dev).dest[i] = buf[i];
686 TXHEAD(dev).clear = conf->txClear;
687 TXHEAD(dev).retries = conf->txRetries; /* 0 is use default */
688 TXHEAD(dev).routing = conf->txRouting;
689 TXHEAD(dev).scrambled = conf->txScrambled;
690 memcpy_toio((char __iomem *)arlan + TXHEAD(dev).offset, buf + ARLAN_FAKE_HDR_LEN, TXHEAD(dev).length);
691 }
692 else if (!TXTAIL(dev).offset && length < (0x800 - headEnds))
693 {
694 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
695 printk(KERN_ERR "TXTAIL insert, headEnd %d\n", headEnds);
696
697 TXTAIL(dev).offset =
698 offsetof(struct arlan_shmem, txBuffer) + 0x800 - (length / 64 + 2) * 64;
699 TXTAIL(dev).length = length - ARLAN_FAKE_HDR_LEN;
700 for (i = 0; i < 6; i++)
701 TXTAIL(dev).dest[i] = buf[i];
702 TXTAIL(dev).clear = conf->txClear;
703 TXTAIL(dev).retries = conf->txRetries;
704 TXTAIL(dev).routing = conf->txRouting;
705 TXTAIL(dev).scrambled = conf->txScrambled;
706 memcpy_toio(((char __iomem *)arlan + TXTAIL(dev).offset), buf + ARLAN_FAKE_HDR_LEN, TXTAIL(dev).length);
707 }
708 else
709 {
710 netif_stop_queue (dev);
711 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
712 printk(KERN_ERR "TX TAIL & HEAD full, return, tailStart %d headEnd %d\n", tailStarts, headEnds);
713 return -1;
714 }
715 priv->out_bytes += length;
716 priv->out_bytes10 += length;
717 if (conf->measure_rate < 1)
718 conf->measure_rate = 1;
719 if (time_after(jiffies, priv->out_time + conf->measure_rate * HZ))
720 {
721 conf->out_speed = priv->out_bytes / conf->measure_rate;
722 priv->out_bytes = 0;
723 priv->out_time = jiffies;
724 }
725 if (time_after(jiffies, priv->out_time10 + conf->measure_rate * 10*HZ))
726 {
727 conf->out_speed10 = priv->out_bytes10 / (10 * conf->measure_rate);
728 priv->out_bytes10 = 0;
729 priv->out_time10 = jiffies;
730 }
731 if (TXHEAD(dev).offset && TXTAIL(dev).offset)
732 {
733 netif_stop_queue (dev);
734 return 0;
735 }
736 else
737 netif_start_queue (dev);
738
739
740 IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
741 printk(KERN_WARNING "%s Transmit t %2x:%2x:%2x:%2x:%2x:%2x f %2x:%2x:%2x:%2x:%2x:%2x \n", dev->name,
742 (unsigned char) buf[0], (unsigned char) buf[1], (unsigned char) buf[2], (unsigned char) buf[3],
743 (unsigned char) buf[4], (unsigned char) buf[5], (unsigned char) buf[6], (unsigned char) buf[7],
744 (unsigned char) buf[8], (unsigned char) buf[9], (unsigned char) buf[10], (unsigned char) buf[11]);
745
746 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "TX command prepare for buffer %d\n", priv->txLast);
747
748 arlan_command(dev, ARLAN_COMMAND_TX);
749
750 priv->tx_last_sent = jiffies;
751
752 IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("%s TX Qued %d bytes \n", dev->name, length);
753
754 ARLAN_DEBUG_EXIT("arlan_hw_tx");
755
756 return 0;
757 }
758
759
760 static int arlan_hw_config(struct net_device *dev)
761 {
762 struct arlan_private *priv = netdev_priv(dev);
763 volatile struct arlan_shmem __iomem *arlan = priv->card;
764 struct arlan_conf_stru *conf = priv->Conf;
765
766 ARLAN_DEBUG_ENTRY("arlan_hw_config");
767
768 printk(KERN_NOTICE "%s arlan configure called \n", dev->name);
769 if (arlan_EEPROM_bad)
770 printk(KERN_NOTICE "arlan configure with eeprom bad option \n");
771
772
773 WRITESHM(arlan->spreadingCode, conf->spreadingCode, u_char);
774 WRITESHM(arlan->channelSet, conf->channelSet, u_char);
775
776 if (arlan_EEPROM_bad)
777 WRITESHM(arlan->defaultChannelSet, conf->channelSet, u_char);
778
779 WRITESHM(arlan->channelNumber, conf->channelNumber, u_char);
780
781 WRITESHM(arlan->scramblingDisable, conf->scramblingDisable, u_char);
782 WRITESHM(arlan->txAttenuation, conf->txAttenuation, u_char);
783
784 WRITESHM(arlan->systemId, conf->systemId, u_int);
785
786 WRITESHM(arlan->maxRetries, conf->maxRetries, u_char);
787 WRITESHM(arlan->receiveMode, conf->receiveMode, u_char);
788 WRITESHM(arlan->priority, conf->priority, u_char);
789 WRITESHM(arlan->rootOrRepeater, conf->rootOrRepeater, u_char);
790 WRITESHM(arlan->SID, conf->SID, u_int);
791
792 WRITESHM(arlan->registrationMode, conf->registrationMode, u_char);
793
794 WRITESHM(arlan->registrationFill, conf->registrationFill, u_char);
795 WRITESHM(arlan->localTalkAddress, conf->localTalkAddress, u_char);
796 WRITESHM(arlan->codeFormat, conf->codeFormat, u_char);
797 WRITESHM(arlan->numChannels, conf->numChannels, u_char);
798 WRITESHM(arlan->channel1, conf->channel1, u_char);
799 WRITESHM(arlan->channel2, conf->channel2, u_char);
800 WRITESHM(arlan->channel3, conf->channel3, u_char);
801 WRITESHM(arlan->channel4, conf->channel4, u_char);
802 WRITESHM(arlan->radioNodeId, conf->radioNodeId, u_short);
803 WRITESHM(arlan->SID, conf->SID, u_int);
804 WRITESHM(arlan->waitTime, conf->waitTime, u_short);
805 WRITESHM(arlan->lParameter, conf->lParameter, u_short);
806 memcpy_toio(&(arlan->_15), &(conf->_15), 3);
807 WRITESHM(arlan->_15, conf->_15, u_short);
808 WRITESHM(arlan->headerSize, conf->headerSize, u_short);
809 if (arlan_EEPROM_bad)
810 WRITESHM(arlan->hardwareType, conf->hardwareType, u_char);
811 WRITESHM(arlan->radioType, conf->radioType, u_char);
812 if (arlan_EEPROM_bad)
813 WRITESHM(arlan->radioModule, conf->radioType, u_char);
814
815 memcpy_toio(arlan->encryptionKey + keyStart, encryptionKey, 8);
816 memcpy_toio(arlan->name, conf->siteName, 16);
817
818 WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_CONF); /* do configure */
819 memset_io(arlan->commandParameter, 0, 0xf); /* 0xf */
820 memset_io(arlan->commandParameter + 1, 0, 2);
821 if (conf->writeEEPROM)
822 {
823 memset_io(arlan->commandParameter, conf->writeEEPROM, 1);
824 // conf->writeEEPROM=0;
825 }
826 if (conf->registrationMode && conf->registrationInterrupts)
827 memset_io(arlan->commandParameter + 3, 1, 1);
828 else
829 memset_io(arlan->commandParameter + 3, 0, 1);
830
831 priv->irq_test_done = 0;
832
833 if (conf->tx_queue_len)
834 dev->tx_queue_len = conf->tx_queue_len;
835 udelay(100);
836
837 ARLAN_DEBUG_EXIT("arlan_hw_config");
838 return 0;
839 }
840
841
842 static int arlan_read_card_configuration(struct net_device *dev)
843 {
844 u_char tlx415;
845 struct arlan_private *priv = netdev_priv(dev);
846 volatile struct arlan_shmem __iomem *arlan = priv->card;
847 struct arlan_conf_stru *conf = priv->Conf;
848
849 ARLAN_DEBUG_ENTRY("arlan_read_card_configuration");
850
851 if (radioNodeId == radioNodeIdUNKNOWN)
852 {
853 READSHM(conf->radioNodeId, arlan->radioNodeId, u_short);
854 }
855 else
856 conf->radioNodeId = radioNodeId;
857
858 if (SID == SIDUNKNOWN)
859 {
860 READSHM(conf->SID, arlan->SID, u_int);
861 }
862 else conf->SID = SID;
863
864 if (spreadingCode == spreadingCodeUNKNOWN)
865 {
866 READSHM(conf->spreadingCode, arlan->spreadingCode, u_char);
867 }
868 else
869 conf->spreadingCode = spreadingCode;
870
871 if (channelSet == channelSetUNKNOWN)
872 {
873 READSHM(conf->channelSet, arlan->channelSet, u_char);
874 }
875 else conf->channelSet = channelSet;
876
877 if (channelNumber == channelNumberUNKNOWN)
878 {
879 READSHM(conf->channelNumber, arlan->channelNumber, u_char);
880 }
881 else conf->channelNumber = channelNumber;
882
883 READSHM(conf->scramblingDisable, arlan->scramblingDisable, u_char);
884 READSHM(conf->txAttenuation, arlan->txAttenuation, u_char);
885
886 if (systemId == systemIdUNKNOWN)
887 {
888 READSHM(conf->systemId, arlan->systemId, u_int);
889 }
890 else conf->systemId = systemId;
891
892 READSHM(conf->maxDatagramSize, arlan->maxDatagramSize, u_short);
893 READSHM(conf->maxFrameSize, arlan->maxFrameSize, u_short);
894 READSHM(conf->maxRetries, arlan->maxRetries, u_char);
895 READSHM(conf->receiveMode, arlan->receiveMode, u_char);
896 READSHM(conf->priority, arlan->priority, u_char);
897 READSHM(conf->rootOrRepeater, arlan->rootOrRepeater, u_char);
898
899 if (SID == SIDUNKNOWN)
900 {
901 READSHM(conf->SID, arlan->SID, u_int);
902 }
903 else conf->SID = SID;
904
905 if (registrationMode == registrationModeUNKNOWN)
906 {
907 READSHM(conf->registrationMode, arlan->registrationMode, u_char);
908 }
909 else conf->registrationMode = registrationMode;
910
911 READSHM(conf->registrationFill, arlan->registrationFill, u_char);
912 READSHM(conf->localTalkAddress, arlan->localTalkAddress, u_char);
913 READSHM(conf->codeFormat, arlan->codeFormat, u_char);
914 READSHM(conf->numChannels, arlan->numChannels, u_char);
915 READSHM(conf->channel1, arlan->channel1, u_char);
916 READSHM(conf->channel2, arlan->channel2, u_char);
917 READSHM(conf->channel3, arlan->channel3, u_char);
918 READSHM(conf->channel4, arlan->channel4, u_char);
919 READSHM(conf->waitTime, arlan->waitTime, u_short);
920 READSHM(conf->lParameter, arlan->lParameter, u_short);
921 READSHM(conf->_15, arlan->_15, u_short);
922 READSHM(conf->headerSize, arlan->headerSize, u_short);
923 READSHM(conf->hardwareType, arlan->hardwareType, u_char);
924 READSHM(conf->radioType, arlan->radioModule, u_char);
925
926 if (conf->radioType == 0)
927 conf->radioType = 0xc;
928
929 WRITESHM(arlan->configStatus, 0xA5, u_char);
930 READSHM(tlx415, arlan->configStatus, u_char);
931
932 if (tlx415 != 0xA5)
933 printk(KERN_INFO "%s tlx415 chip \n", dev->name);
934
935 conf->txClear = 0;
936 conf->txRetries = 1;
937 conf->txRouting = 1;
938 conf->txScrambled = 0;
939 conf->rxParameter = 1;
940 conf->txTimeoutMs = 4000;
941 conf->waitCardTimeout = 100000;
942 conf->receiveMode = ARLAN_RCV_CLEAN;
943 memcpy_fromio(conf->siteName, arlan->name, 16);
944 conf->siteName[16] = '\0';
945 conf->retries = retries;
946 conf->tx_delay_ms = tx_delay_ms;
947 conf->ReTransmitPacketMaxSize = 200;
948 conf->waitReTransmitPacketMaxSize = 200;
949 conf->txAckTimeoutMs = 900;
950 conf->fastReTransCount = 3;
951
952 ARLAN_DEBUG_EXIT("arlan_read_card_configuration");
953
954 return 0;
955 }
956
957
958 static int lastFoundAt = 0xbe000;
959
960
961 /*
962 * This is the real probe routine. Linux has a history of friendly device
963 * probes on the ISA bus. A good device probes avoids doing writes, and
964 * verifies that the correct device exists and functions.
965 */
966 #define ARLAN_SHMEM_SIZE 0x2000
967 static int __init arlan_check_fingerprint(unsigned long memaddr)
968 {
969 static const char probeText[] = "TELESYSTEM SLW INC. ARLAN \0";
970 volatile struct arlan_shmem __iomem *arlan = (struct arlan_shmem *) memaddr;
971 unsigned long paddr = virt_to_phys((void *) memaddr);
972 char tempBuf[49];
973
974 ARLAN_DEBUG_ENTRY("arlan_check_fingerprint");
975
976 if (!request_mem_region(paddr, ARLAN_SHMEM_SIZE, "arlan")) {
977 // printk(KERN_WARNING "arlan: memory region %lx excluded from probing \n",paddr);
978 return -ENODEV;
979 }
980
981 memcpy_fromio(tempBuf, arlan->textRegion, 29);
982 tempBuf[30] = 0;
983
984 /* check for card at this address */
985 if (0 != strncmp(tempBuf, probeText, 29)){
986 release_mem_region(paddr, ARLAN_SHMEM_SIZE);
987 return -ENODEV;
988 }
989
990 // printk(KERN_INFO "arlan found at 0x%x \n",memaddr);
991 ARLAN_DEBUG_EXIT("arlan_check_fingerprint");
992
993 return 0;
994 }
995
996 static int arlan_change_mtu(struct net_device *dev, int new_mtu)
997 {
998 struct arlan_private *priv = netdev_priv(dev);
999 struct arlan_conf_stru *conf = priv->Conf;
1000
1001 ARLAN_DEBUG_ENTRY("arlan_change_mtu");
1002 if (new_mtu > 2032)
1003 return -EINVAL;
1004 dev->mtu = new_mtu;
1005 if (new_mtu < 256)
1006 new_mtu = 256; /* cards book suggests 1600 */
1007 conf->maxDatagramSize = new_mtu;
1008 conf->maxFrameSize = new_mtu + 48;
1009
1010 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF);
1011 printk(KERN_NOTICE "%s mtu changed to %d \n", dev->name, new_mtu);
1012
1013 ARLAN_DEBUG_EXIT("arlan_change_mtu");
1014
1015 return 0;
1016 }
1017
1018 static int arlan_mac_addr(struct net_device *dev, void *p)
1019 {
1020 struct sockaddr *addr = p;
1021
1022
1023 ARLAN_DEBUG_ENTRY("arlan_mac_addr");
1024 return -EINVAL;
1025
1026 if (!netif_running(dev))
1027 return -EBUSY;
1028 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1029
1030 ARLAN_DEBUG_EXIT("arlan_mac_addr");
1031 return 0;
1032 }
1033
1034
1035
1036 static int __init arlan_setup_device(struct net_device *dev, int num)
1037 {
1038 struct arlan_private *ap = netdev_priv(dev);
1039 int err;
1040
1041 ARLAN_DEBUG_ENTRY("arlan_setup_device");
1042
1043 ap->conf = (struct arlan_shmem *)(ap+1);
1044
1045 dev->tx_queue_len = tx_queue_len;
1046 dev->open = arlan_open;
1047 dev->stop = arlan_close;
1048 dev->hard_start_xmit = arlan_tx;
1049 dev->get_stats = arlan_statistics;
1050 dev->set_multicast_list = arlan_set_multicast;
1051 dev->change_mtu = arlan_change_mtu;
1052 dev->set_mac_address = arlan_mac_addr;
1053 dev->tx_timeout = arlan_tx_timeout;
1054 dev->watchdog_timeo = 3*HZ;
1055
1056 ap->irq_test_done = 0;
1057 ap->Conf = &arlan_conf[num];
1058
1059 ap->Conf->pre_Command_Wait = 40;
1060 ap->Conf->rx_tweak1 = 30;
1061 ap->Conf->rx_tweak2 = 0;
1062
1063
1064 err = register_netdev(dev);
1065 if (err) {
1066 release_mem_region(virt_to_phys((void *) dev->mem_start),
1067 ARLAN_SHMEM_SIZE);
1068 free_netdev(dev);
1069 return err;
1070 }
1071 arlan_device[num] = dev;
1072 ARLAN_DEBUG_EXIT("arlan_setup_device");
1073 return 0;
1074 }
1075
1076 static int __init arlan_probe_here(struct net_device *dev,
1077 unsigned long memaddr)
1078 {
1079 struct arlan_private *ap = netdev_priv(dev);
1080
1081 ARLAN_DEBUG_ENTRY("arlan_probe_here");
1082
1083 if (arlan_check_fingerprint(memaddr))
1084 return -ENODEV;
1085
1086 printk(KERN_NOTICE "%s: Arlan found at %x, \n ", dev->name,
1087 (int) virt_to_phys((void*)memaddr));
1088
1089 ap->card = (void *) memaddr;
1090 dev->mem_start = memaddr;
1091 dev->mem_end = memaddr + ARLAN_SHMEM_SIZE-1;
1092
1093 if (dev->irq < 2)
1094 {
1095 READSHM(dev->irq, ap->card->irqLevel, u_char);
1096 } else if (dev->irq == 2)
1097 dev->irq = 9;
1098
1099 arlan_read_card_configuration(dev);
1100
1101 ARLAN_DEBUG_EXIT("arlan_probe_here");
1102 return 0;
1103 }
1104
1105
1106 static int arlan_open(struct net_device *dev)
1107 {
1108 struct arlan_private *priv = netdev_priv(dev);
1109 volatile struct arlan_shmem __iomem *arlan = priv->card;
1110 int ret = 0;
1111
1112 ARLAN_DEBUG_ENTRY("arlan_open");
1113
1114 ret = request_irq(dev->irq, &arlan_interrupt, 0, dev->name, dev);
1115 if (ret)
1116 {
1117 printk(KERN_ERR "%s: unable to get IRQ %d .\n",
1118 dev->name, dev->irq);
1119 return ret;
1120 }
1121
1122
1123 priv->bad = 0;
1124 priv->lastReset = 0;
1125 priv->reset = 0;
1126 memcpy_fromio(dev->dev_addr, arlan->lanCardNodeId, 6);
1127 memset(dev->broadcast, 0xff, 6);
1128 dev->tx_queue_len = tx_queue_len;
1129 priv->interrupt_processing_active = 0;
1130 spin_lock_init(&priv->lock);
1131
1132 netif_start_queue (dev);
1133
1134 priv->registrationLostCount = 0;
1135 priv->registrationLastSeen = jiffies;
1136 priv->txLast = 0;
1137 priv->tx_command_given = 0;
1138 priv->rx_command_given = 0;
1139
1140 priv->reRegisterExp = 1;
1141 priv->tx_last_sent = jiffies - 1;
1142 priv->tx_last_cleared = jiffies;
1143 priv->Conf->writeEEPROM = 0;
1144 priv->Conf->registrationInterrupts = 1;
1145
1146 init_timer(&priv->timer);
1147 priv->timer.expires = jiffies + HZ / 10;
1148 priv->timer.data = (unsigned long) dev;
1149 priv->timer.function = &arlan_registration_timer; /* timer handler */
1150
1151 arlan_command(dev, ARLAN_COMMAND_POWERUP | ARLAN_COMMAND_LONG_WAIT_NOW);
1152 mdelay(200);
1153 add_timer(&priv->timer);
1154
1155 ARLAN_DEBUG_EXIT("arlan_open");
1156 return 0;
1157 }
1158
1159
1160 static void arlan_tx_timeout (struct net_device *dev)
1161 {
1162 printk(KERN_ERR "%s: arlan transmit timed out, kernel decided\n", dev->name);
1163 /* Try to restart the adaptor. */
1164 arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET);
1165 // dev->trans_start = jiffies;
1166 // netif_start_queue (dev);
1167 }
1168
1169
1170 static int arlan_tx(struct sk_buff *skb, struct net_device *dev)
1171 {
1172 short length;
1173 unsigned char *buf;
1174
1175 ARLAN_DEBUG_ENTRY("arlan_tx");
1176
1177 length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
1178 buf = skb->data;
1179
1180 if (length + 0x12 > 0x800) {
1181 printk(KERN_ERR "TX RING overflow \n");
1182 netif_stop_queue (dev);
1183 }
1184
1185 if (arlan_hw_tx(dev, buf, length) == -1)
1186 goto bad_end;
1187
1188 dev->trans_start = jiffies;
1189
1190 dev_kfree_skb(skb);
1191
1192 arlan_process_interrupt(dev);
1193 ARLAN_DEBUG_EXIT("arlan_tx");
1194 return 0;
1195
1196 bad_end:
1197 arlan_process_interrupt(dev);
1198 netif_stop_queue (dev);
1199 ARLAN_DEBUG_EXIT("arlan_tx");
1200 return 1;
1201 }
1202
1203
1204 static inline int DoNotReTransmitCrap(struct net_device *dev)
1205 {
1206 struct arlan_private *priv = netdev_priv(dev);
1207
1208 if (TXLAST(dev).length < priv->Conf->ReTransmitPacketMaxSize)
1209 return 1;
1210 return 0;
1211
1212 }
1213
1214 static inline int DoNotWaitReTransmitCrap(struct net_device *dev)
1215 {
1216 struct arlan_private *priv = netdev_priv(dev);
1217
1218 if (TXLAST(dev).length < priv->Conf->waitReTransmitPacketMaxSize)
1219 return 1;
1220 return 0;
1221 }
1222
1223 static inline void arlan_queue_retransmit(struct net_device *dev)
1224 {
1225 struct arlan_private *priv = netdev_priv(dev);
1226
1227 ARLAN_DEBUG_ENTRY("arlan_queue_retransmit");
1228
1229 if (DoNotWaitReTransmitCrap(dev))
1230 {
1231 arlan_drop_tx(dev);
1232 } else
1233 priv->ReTransmitRequested++;
1234
1235 ARLAN_DEBUG_EXIT("arlan_queue_retransmit");
1236 }
1237
1238 static inline void RetryOrFail(struct net_device *dev)
1239 {
1240 struct arlan_private *priv = netdev_priv(dev);
1241
1242 ARLAN_DEBUG_ENTRY("RetryOrFail");
1243
1244 if (priv->retransmissions > priv->Conf->retries ||
1245 DoNotReTransmitCrap(dev))
1246 {
1247 arlan_drop_tx(dev);
1248 }
1249 else if (priv->bad <= priv->Conf->fastReTransCount)
1250 {
1251 arlan_retransmit_now(dev);
1252 }
1253 else arlan_queue_retransmit(dev);
1254
1255 ARLAN_DEBUG_EXIT("RetryOrFail");
1256 }
1257
1258
1259 static void arlan_tx_done_interrupt(struct net_device *dev, int status)
1260 {
1261 struct arlan_private *priv = netdev_priv(dev);
1262
1263 ARLAN_DEBUG_ENTRY("arlan_tx_done_interrupt");
1264
1265 priv->tx_last_cleared = jiffies;
1266 priv->tx_command_given = 0;
1267 switch (status)
1268 {
1269 case 1:
1270 {
1271 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1272 printk("arlan intr: transmit OK\n");
1273 priv->stats.tx_packets++;
1274 priv->bad = 0;
1275 priv->reset = 0;
1276 priv->retransmissions = 0;
1277 if (priv->Conf->tx_delay_ms)
1278 {
1279 priv->tx_done_delayed = jiffies + (priv->Conf->tx_delay_ms * HZ) / 1000 + 1;
1280 }
1281 else
1282 {
1283 TXLAST(dev).offset = 0;
1284 if (priv->txLast)
1285 priv->txLast = 0;
1286 else if (TXTAIL(dev).offset)
1287 priv->txLast = 1;
1288 if (TXLAST(dev).offset)
1289 {
1290 arlan_retransmit_now(dev);
1291 dev->trans_start = jiffies;
1292 }
1293 if (!TXHEAD(dev).offset || !TXTAIL(dev).offset)
1294 {
1295 netif_wake_queue (dev);
1296 }
1297 }
1298 }
1299 break;
1300
1301 case 2:
1302 {
1303 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1304 printk("arlan intr: transmit timed out\n");
1305 priv->bad += 1;
1306 //arlan_queue_retransmit(dev);
1307 RetryOrFail(dev);
1308 }
1309 break;
1310
1311 case 3:
1312 {
1313 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1314 printk("arlan intr: transmit max retries\n");
1315 priv->bad += 1;
1316 priv->reset = 0;
1317 //arlan_queue_retransmit(dev);
1318 RetryOrFail(dev);
1319 }
1320 break;
1321
1322 case 4:
1323 {
1324 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1325 printk("arlan intr: transmit aborted\n");
1326 priv->bad += 1;
1327 arlan_queue_retransmit(dev);
1328 //RetryOrFail(dev);
1329 }
1330 break;
1331
1332 case 5:
1333 {
1334 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1335 printk("arlan intr: transmit not registered\n");
1336 priv->bad += 1;
1337 //debug=101;
1338 arlan_queue_retransmit(dev);
1339 }
1340 break;
1341
1342 case 6:
1343 {
1344 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1345 printk("arlan intr: transmit destination full\n");
1346 priv->bad += 1;
1347 priv->reset = 0;
1348 //arlan_drop_tx(dev);
1349 arlan_queue_retransmit(dev);
1350 }
1351 break;
1352
1353 case 7:
1354 {
1355 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1356 printk("arlan intr: transmit unknown ack\n");
1357 priv->bad += 1;
1358 priv->reset = 0;
1359 arlan_queue_retransmit(dev);
1360 }
1361 break;
1362
1363 case 8:
1364 {
1365 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1366 printk("arlan intr: transmit dest mail box full\n");
1367 priv->bad += 1;
1368 priv->reset = 0;
1369 //arlan_drop_tx(dev);
1370 arlan_queue_retransmit(dev);
1371 }
1372 break;
1373
1374 case 9:
1375 {
1376 IFDEBUG(ARLAN_DEBUG_TX_CHAIN)
1377 printk("arlan intr: transmit root dest not reg.\n");
1378 priv->bad += 1;
1379 priv->reset = 1;
1380 //arlan_drop_tx(dev);
1381 arlan_queue_retransmit(dev);
1382 }
1383 break;
1384
1385 default:
1386 {
1387 printk(KERN_ERR "arlan intr: transmit status unknown\n");
1388 priv->bad += 1;
1389 priv->reset = 1;
1390 arlan_drop_tx(dev);
1391 }
1392 }
1393
1394 ARLAN_DEBUG_EXIT("arlan_tx_done_interrupt");
1395 }
1396
1397
1398 static void arlan_rx_interrupt(struct net_device *dev, u_char rxStatus, u_short rxOffset, u_short pkt_len)
1399 {
1400 char *skbtmp;
1401 int i = 0;
1402
1403 struct arlan_private *priv = netdev_priv(dev);
1404 volatile struct arlan_shmem __iomem *arlan = priv->card;
1405 struct arlan_conf_stru *conf = priv->Conf;
1406
1407
1408 ARLAN_DEBUG_ENTRY("arlan_rx_interrupt");
1409 // by spec, not WRITESHMB(arlan->rxStatus,0x00);
1410 // prohibited here arlan_command(dev, ARLAN_COMMAND_RX);
1411
1412 if (pkt_len < 10 || pkt_len > 2048)
1413 {
1414 printk(KERN_WARNING "%s: got too short or long packet, len %d \n", dev->name, pkt_len);
1415 return;
1416 }
1417 if (rxOffset + pkt_len > 0x2000)
1418 {
1419 printk("%s: got too long packet, len %d offset %x\n", dev->name, pkt_len, rxOffset);
1420 return;
1421 }
1422 priv->in_bytes += pkt_len;
1423 priv->in_bytes10 += pkt_len;
1424 if (conf->measure_rate < 1)
1425 conf->measure_rate = 1;
1426 if (time_after(jiffies, priv->in_time + conf->measure_rate * HZ))
1427 {
1428 conf->in_speed = priv->in_bytes / conf->measure_rate;
1429 priv->in_bytes = 0;
1430 priv->in_time = jiffies;
1431 }
1432 if (time_after(jiffies, priv->in_time10 + conf->measure_rate * 10*HZ))
1433 {
1434 conf->in_speed10 = priv->in_bytes10 / (10 * conf->measure_rate);
1435 priv->in_bytes10 = 0;
1436 priv->in_time10 = jiffies;
1437 }
1438 DEBUGSHM(1, "arlan rcv pkt rxStatus= %d ", arlan->rxStatus, u_char);
1439 switch (rxStatus)
1440 {
1441 case 1:
1442 case 2:
1443 case 3:
1444 {
1445 /* Malloc up new buffer. */
1446 struct sk_buff *skb;
1447
1448 DEBUGSHM(50, "arlan recv pkt offs=%d\n", arlan->rxOffset, u_short);
1449 DEBUGSHM(1, "arlan rxFrmType = %d \n", arlan->rxFrmType, u_char);
1450 DEBUGSHM(1, KERN_INFO "arlan rx scrambled = %d \n", arlan->scrambled, u_char);
1451
1452 /* here we do multicast filtering to avoid slow 8-bit memcopy */
1453 #ifdef ARLAN_MULTICAST
1454 if (!(dev->flags & IFF_ALLMULTI) &&
1455 !(dev->flags & IFF_PROMISC) &&
1456 dev->mc_list)
1457 {
1458 char hw_dst_addr[6];
1459 struct dev_mc_list *dmi = dev->mc_list;
1460 int i;
1461
1462 memcpy_fromio(hw_dst_addr, arlan->ultimateDestAddress, 6);
1463 if (hw_dst_addr[0] == 0x01)
1464 {
1465 if (mdebug)
1466 if (hw_dst_addr[1] == 0x00)
1467 printk(KERN_ERR "%s mcast 0x0100 \n", dev->name);
1468 else if (hw_dst_addr[1] == 0x40)
1469 printk(KERN_ERR "%s m/bcast 0x0140 \n", dev->name);
1470 while (dmi)
1471 { if (dmi->dmi_addrlen == 6)
1472 {
1473 if (arlan_debug & ARLAN_DEBUG_HEADER_DUMP)
1474 printk(KERN_ERR "%s mcl %2x:%2x:%2x:%2x:%2x:%2x \n", dev->name,
1475 dmi->dmi_addr[0], dmi->dmi_addr[1], dmi->dmi_addr[2],
1476 dmi->dmi_addr[3], dmi->dmi_addr[4], dmi->dmi_addr[5]);
1477 for (i = 0; i < 6; i++)
1478 if (dmi->dmi_addr[i] != hw_dst_addr[i])
1479 break;
1480 if (i == 6)
1481 break;
1482 }
1483 else
1484 printk(KERN_ERR "%s: invalid multicast address length given.\n", dev->name);
1485 dmi = dmi->next;
1486 }
1487 /* we reach here if multicast filtering is on and packet
1488 * is multicast and not for receive */
1489 goto end_of_interrupt;
1490 }
1491 }
1492 #endif // ARLAN_MULTICAST
1493 /* multicast filtering ends here */
1494 pkt_len += ARLAN_FAKE_HDR_LEN;
1495
1496 skb = dev_alloc_skb(pkt_len + 4);
1497 if (skb == NULL)
1498 {
1499 printk(KERN_ERR "%s: Memory squeeze, dropping packet.\n", dev->name);
1500 priv->stats.rx_dropped++;
1501 break;
1502 }
1503 skb_reserve(skb, 2);
1504 skb->dev = dev;
1505 skbtmp = skb_put(skb, pkt_len);
1506
1507 memcpy_fromio(skbtmp + ARLAN_FAKE_HDR_LEN, ((char __iomem *) arlan) + rxOffset, pkt_len - ARLAN_FAKE_HDR_LEN);
1508 memcpy_fromio(skbtmp, arlan->ultimateDestAddress, 6);
1509 memcpy_fromio(skbtmp + 6, arlan->rxSrc, 6);
1510 WRITESHMB(arlan->rxStatus, 0x00);
1511 arlan_command(dev, ARLAN_COMMAND_RX);
1512
1513 IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
1514 {
1515 char immedDestAddress[6];
1516 char immedSrcAddress[6];
1517 memcpy_fromio(immedDestAddress, arlan->immedDestAddress, 6);
1518 memcpy_fromio(immedSrcAddress, arlan->immedSrcAddress, 6);
1519
1520 printk(KERN_WARNING "%s t %2x:%2x:%2x:%2x:%2x:%2x f %2x:%2x:%2x:%2x:%2x:%2x imd %2x:%2x:%2x:%2x:%2x:%2x ims %2x:%2x:%2x:%2x:%2x:%2x\n", dev->name,
1521 (unsigned char) skbtmp[0], (unsigned char) skbtmp[1], (unsigned char) skbtmp[2], (unsigned char) skbtmp[3],
1522 (unsigned char) skbtmp[4], (unsigned char) skbtmp[5], (unsigned char) skbtmp[6], (unsigned char) skbtmp[7],
1523 (unsigned char) skbtmp[8], (unsigned char) skbtmp[9], (unsigned char) skbtmp[10], (unsigned char) skbtmp[11],
1524 immedDestAddress[0], immedDestAddress[1], immedDestAddress[2],
1525 immedDestAddress[3], immedDestAddress[4], immedDestAddress[5],
1526 immedSrcAddress[0], immedSrcAddress[1], immedSrcAddress[2],
1527 immedSrcAddress[3], immedSrcAddress[4], immedSrcAddress[5]);
1528 }
1529 skb->protocol = eth_type_trans(skb, dev);
1530 IFDEBUG(ARLAN_DEBUG_HEADER_DUMP)
1531 if (skb->protocol != 0x608 && skb->protocol != 0x8)
1532 {
1533 for (i = 0; i <= 22; i++)
1534 printk("%02x:", (u_char) skbtmp[i + 12]);
1535 printk(KERN_ERR "\n");
1536 printk(KERN_WARNING "arlan kernel pkt type trans %x \n", skb->protocol);
1537 }
1538 netif_rx(skb);
1539 dev->last_rx = jiffies;
1540 priv->stats.rx_packets++;
1541 priv->stats.rx_bytes += pkt_len;
1542 }
1543 break;
1544
1545 default:
1546 printk(KERN_ERR "arlan intr: received unknown status\n");
1547 priv->stats.rx_crc_errors++;
1548 break;
1549 }
1550 ARLAN_DEBUG_EXIT("arlan_rx_interrupt");
1551 }
1552
1553 static void arlan_process_interrupt(struct net_device *dev)
1554 {
1555 struct arlan_private *priv = netdev_priv(dev);
1556 volatile struct arlan_shmem __iomem *arlan = priv->card;
1557 u_char rxStatus = READSHMB(arlan->rxStatus);
1558 u_char txStatus = READSHMB(arlan->txStatus);
1559 u_short rxOffset = READSHMS(arlan->rxOffset);
1560 u_short pkt_len = READSHMS(arlan->rxLength);
1561 int interrupt_count = 0;
1562
1563 ARLAN_DEBUG_ENTRY("arlan_process_interrupt");
1564
1565 if (test_and_set_bit(0, (void *) &priv->interrupt_processing_active))
1566 {
1567 if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS)
1568 printk(KERN_ERR "interrupt chain reentering \n");
1569 goto end_int_process;
1570 }
1571 while ((rxStatus || txStatus || priv->interrupt_ack_requested)
1572 && (interrupt_count < 5))
1573 {
1574 if (rxStatus)
1575 priv->last_rx_int_ack_time = jiffies;
1576
1577 arlan_command(dev, ARLAN_COMMAND_INT_ACK);
1578 arlan_command(dev, ARLAN_COMMAND_INT_ENABLE);
1579
1580 IFDEBUG(ARLAN_DEBUG_INTERRUPT)
1581 printk(KERN_ERR "%s: got IRQ rx %x tx %x comm %x rxOff %x rxLen %x \n",
1582 dev->name, rxStatus, txStatus, READSHMB(arlan->commandByte),
1583 rxOffset, pkt_len);
1584
1585 if (rxStatus == 0 && txStatus == 0)
1586 {
1587 if (priv->irq_test_done)
1588 {
1589 if (!registrationBad(dev))
1590 IFDEBUG(ARLAN_DEBUG_INTERRUPT) printk(KERN_ERR "%s unknown interrupt(nop? regLost ?) reason tx %d rx %d ",
1591 dev->name, txStatus, rxStatus);
1592 } else {
1593 IFDEBUG(ARLAN_DEBUG_INTERRUPT)
1594 printk(KERN_INFO "%s irq $%d test OK \n", dev->name, dev->irq);
1595
1596 }
1597 priv->interrupt_ack_requested = 0;
1598 goto ends;
1599 }
1600 if (txStatus != 0)
1601 {
1602 WRITESHMB(arlan->txStatus, 0x00);
1603 arlan_tx_done_interrupt(dev, txStatus);
1604 goto ends;
1605 }
1606 if (rxStatus == 1 || rxStatus == 2)
1607 { /* a packet waiting */
1608 arlan_rx_interrupt(dev, rxStatus, rxOffset, pkt_len);
1609 goto ends;
1610 }
1611 if (rxStatus > 2 && rxStatus < 0xff)
1612 {
1613 WRITESHMB(arlan->rxStatus, 0x00);
1614 printk(KERN_ERR "%s unknown rxStatus reason tx %d rx %d ",
1615 dev->name, txStatus, rxStatus);
1616 goto ends;
1617 }
1618 if (rxStatus == 0xff)
1619 {
1620 WRITESHMB(arlan->rxStatus, 0x00);
1621 arlan_command(dev, ARLAN_COMMAND_RX);
1622 if (registrationBad(dev))
1623 netif_device_detach(dev);
1624 if (!registrationBad(dev))
1625 {
1626 priv->registrationLastSeen = jiffies;
1627 if (!netif_queue_stopped(dev) && !priv->under_reset && !priv->under_config)
1628 netif_wake_queue (dev);
1629 }
1630 goto ends;
1631 }
1632 ends:
1633
1634 arlan_command_process(dev);
1635
1636 rxStatus = READSHMB(arlan->rxStatus);
1637 txStatus = READSHMB(arlan->txStatus);
1638 rxOffset = READSHMS(arlan->rxOffset);
1639 pkt_len = READSHMS(arlan->rxLength);
1640
1641
1642 priv->irq_test_done = 1;
1643
1644 interrupt_count++;
1645 }
1646 priv->interrupt_processing_active = 0;
1647
1648 end_int_process:
1649 arlan_command_process(dev);
1650
1651 ARLAN_DEBUG_EXIT("arlan_process_interrupt");
1652 return;
1653 }
1654
1655 static irqreturn_t arlan_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1656 {
1657 struct net_device *dev = dev_id;
1658 struct arlan_private *priv = netdev_priv(dev);
1659 volatile struct arlan_shmem __iomem *arlan = priv->card;
1660 u_char rxStatus = READSHMB(arlan->rxStatus);
1661 u_char txStatus = READSHMB(arlan->txStatus);
1662
1663 ARLAN_DEBUG_ENTRY("arlan_interrupt");
1664
1665
1666 if (!rxStatus && !txStatus)
1667 priv->interrupt_ack_requested++;
1668
1669 arlan_process_interrupt(dev);
1670
1671 priv->irq_test_done = 1;
1672
1673 ARLAN_DEBUG_EXIT("arlan_interrupt");
1674 return IRQ_HANDLED;
1675
1676 }
1677
1678
1679 static int arlan_close(struct net_device *dev)
1680 {
1681 struct arlan_private *priv = netdev_priv(dev);
1682
1683 ARLAN_DEBUG_ENTRY("arlan_close");
1684
1685 del_timer_sync(&priv->timer);
1686
1687 arlan_command(dev, ARLAN_COMMAND_POWERDOWN);
1688
1689 IFDEBUG(ARLAN_DEBUG_STARTUP)
1690 printk(KERN_NOTICE "%s: Closing device\n", dev->name);
1691
1692 netif_stop_queue(dev);
1693 free_irq(dev->irq, dev);
1694
1695 ARLAN_DEBUG_EXIT("arlan_close");
1696 return 0;
1697 }
1698
1699 #ifdef ARLAN_DEBUGGING
1700 static long alignLong(volatile u_char * ptr)
1701 {
1702 long ret;
1703 memcpy_fromio(&ret, (void *) ptr, 4);
1704 return ret;
1705 }
1706 #endif
1707
1708 /*
1709 * Get the current statistics.
1710 * This may be called with the card open or closed.
1711 */
1712
1713 static struct net_device_stats *arlan_statistics(struct net_device *dev)
1714 {
1715 struct arlan_private *priv = netdev_priv(dev);
1716 volatile struct arlan_shmem __iomem *arlan = priv->card;
1717
1718
1719 ARLAN_DEBUG_ENTRY("arlan_statistics");
1720
1721 /* Update the statistics from the device registers. */
1722
1723 READSHM(priv->stats.collisions, arlan->numReTransmissions, u_int);
1724 READSHM(priv->stats.rx_crc_errors, arlan->numCRCErrors, u_int);
1725 READSHM(priv->stats.rx_dropped, arlan->numFramesDiscarded, u_int);
1726 READSHM(priv->stats.rx_fifo_errors, arlan->numRXBufferOverflows, u_int);
1727 READSHM(priv->stats.rx_frame_errors, arlan->numReceiveFramesLost, u_int);
1728 READSHM(priv->stats.rx_over_errors, arlan->numRXOverruns, u_int);
1729 READSHM(priv->stats.rx_packets, arlan->numDatagramsReceived, u_int);
1730 READSHM(priv->stats.tx_aborted_errors, arlan->numAbortErrors, u_int);
1731 READSHM(priv->stats.tx_carrier_errors, arlan->numStatusTimeouts, u_int);
1732 READSHM(priv->stats.tx_dropped, arlan->numDatagramsDiscarded, u_int);
1733 READSHM(priv->stats.tx_fifo_errors, arlan->numTXUnderruns, u_int);
1734 READSHM(priv->stats.tx_packets, arlan->numDatagramsTransmitted, u_int);
1735 READSHM(priv->stats.tx_window_errors, arlan->numHoldOffs, u_int);
1736
1737 ARLAN_DEBUG_EXIT("arlan_statistics");
1738
1739 return &priv->stats;
1740 }
1741
1742
1743 static void arlan_set_multicast(struct net_device *dev)
1744 {
1745 struct arlan_private *priv = netdev_priv(dev);
1746 volatile struct arlan_shmem __iomem *arlan = priv->card;
1747 struct arlan_conf_stru *conf = priv->Conf;
1748 int board_conf_needed = 0;
1749
1750
1751 ARLAN_DEBUG_ENTRY("arlan_set_multicast");
1752
1753 if (dev->flags & IFF_PROMISC)
1754 {
1755 unsigned char recMode;
1756 READSHM(recMode, arlan->receiveMode, u_char);
1757 conf->receiveMode = (ARLAN_RCV_PROMISC | ARLAN_RCV_CONTROL);
1758 if (conf->receiveMode != recMode)
1759 board_conf_needed = 1;
1760 }
1761 else
1762 {
1763 /* turn off promiscuous mode */
1764 unsigned char recMode;
1765 READSHM(recMode, arlan->receiveMode, u_char);
1766 conf->receiveMode = ARLAN_RCV_CLEAN | ARLAN_RCV_CONTROL;
1767 if (conf->receiveMode != recMode)
1768 board_conf_needed = 1;
1769 }
1770 if (board_conf_needed)
1771 arlan_command(dev, ARLAN_COMMAND_CONF);
1772
1773 ARLAN_DEBUG_EXIT("arlan_set_multicast");
1774 }
1775
1776
1777 struct net_device * __init arlan_probe(int unit)
1778 {
1779 struct net_device *dev;
1780 int err;
1781 int m;
1782
1783 ARLAN_DEBUG_ENTRY("arlan_probe");
1784
1785 if (arlans_found == MAX_ARLANS)
1786 return ERR_PTR(-ENODEV);
1787
1788 /*
1789 * Reserve space for local data and a copy of the shared memory
1790 * that is used by the /proc interface.
1791 */
1792 dev = alloc_etherdev(sizeof(struct arlan_private)
1793 + sizeof(struct arlan_shmem));
1794 if (!dev)
1795 return ERR_PTR(-ENOMEM);
1796
1797 SET_MODULE_OWNER(dev);
1798
1799 if (unit >= 0) {
1800 sprintf(dev->name, "eth%d", unit);
1801 netdev_boot_setup_check(dev);
1802
1803 if (dev->mem_start) {
1804 if (arlan_probe_here(dev, dev->mem_start) == 0)
1805 goto found;
1806 goto not_found;
1807 }
1808
1809 }
1810
1811
1812 for (m = (int)phys_to_virt(lastFoundAt) + ARLAN_SHMEM_SIZE;
1813 m <= (int)phys_to_virt(0xDE000);
1814 m += ARLAN_SHMEM_SIZE)
1815 {
1816 if (arlan_probe_here(dev, m) == 0)
1817 {
1818 lastFoundAt = (int)virt_to_phys((void*)m);
1819 goto found;
1820 }
1821 }
1822
1823 if (lastFoundAt == 0xbe000)
1824 printk(KERN_ERR "arlan: No Arlan devices found \n");
1825
1826 not_found:
1827 free_netdev(dev);
1828 return ERR_PTR(-ENODEV);
1829
1830 found:
1831 err = arlan_setup_device(dev, arlans_found);
1832 if (err)
1833 dev = ERR_PTR(err);
1834 else if (!arlans_found++)
1835 printk(KERN_INFO "Arlan driver %s\n", arlan_version);
1836
1837 return dev;
1838 }
1839
1840 #ifdef MODULE
1841 int init_module(void)
1842 {
1843 int i = 0;
1844
1845 ARLAN_DEBUG_ENTRY("init_module");
1846
1847 if (channelSet != channelSetUNKNOWN || channelNumber != channelNumberUNKNOWN || systemId != systemIdUNKNOWN)
1848 return -EINVAL;
1849
1850 for (i = 0; i < MAX_ARLANS; i++) {
1851 struct net_device *dev = arlan_probe(i);
1852
1853 if (IS_ERR(dev))
1854 return PTR_ERR(dev);
1855 }
1856 init_arlan_proc();
1857 printk(KERN_INFO "Arlan driver %s\n", arlan_version);
1858 ARLAN_DEBUG_EXIT("init_module");
1859 return 0;
1860 }
1861
1862
1863 void cleanup_module(void)
1864 {
1865 int i = 0;
1866 struct net_device *dev;
1867
1868 ARLAN_DEBUG_ENTRY("cleanup_module");
1869
1870 IFDEBUG(ARLAN_DEBUG_SHUTDOWN)
1871 printk(KERN_INFO "arlan: unloading module\n");
1872
1873 cleanup_arlan_proc();
1874
1875 for (i = 0; i < MAX_ARLANS; i++)
1876 {
1877 dev = arlan_device[i];
1878 if (dev) {
1879 arlan_command(dev, ARLAN_COMMAND_POWERDOWN );
1880
1881 unregister_netdev(dev);
1882 release_mem_region(virt_to_phys((void *) dev->mem_start),
1883 ARLAN_SHMEM_SIZE);
1884 free_netdev(dev);
1885 arlan_device[i] = NULL;
1886 }
1887 }
1888
1889 ARLAN_DEBUG_EXIT("cleanup_module");
1890 }
1891
1892
1893 #endif
1894 MODULE_LICENSE("GPL");
WRT350N Kernel Patches