Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | ||
1da177e4 LT |
8 | #include "arlan.h" |
9 | ||
10 | #if BITS_PER_LONG != 32 | |
11 | # error FIXME: this driver requires a 32-bit platform | |
12 | #endif | |
13 | ||
14 | static const char *arlan_version = "C.Jennigs 97 & Elmer.Joandi@ut.ee Oct'98, http://www.ylenurme.ee/~elmer/655/"; | |
15 | ||
16 | struct net_device *arlan_device[MAX_ARLANS]; | |
17 | ||
18 | static int SID = SIDUNKNOWN; | |
19 | static int radioNodeId = radioNodeIdUNKNOWN; | |
20 | static char encryptionKey[12] = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h'}; | |
21 | int arlan_debug = debugUNKNOWN; | |
22 | static int spreadingCode = spreadingCodeUNKNOWN; | |
23 | static int channelNumber = channelNumberUNKNOWN; | |
24 | static int channelSet = channelSetUNKNOWN; | |
25 | static int systemId = systemIdUNKNOWN; | |
26 | static int registrationMode = registrationModeUNKNOWN; | |
27 | static int keyStart; | |
28 | static int tx_delay_ms; | |
29 | static int retries = 5; | |
30 | static int tx_queue_len = 1; | |
31 | static int arlan_EEPROM_bad; | |
32 | ||
33 | #ifdef ARLAN_DEBUGGING | |
34 | ||
1da177e4 LT |
35 | static int testMemory = testMemoryUNKNOWN; |
36 | static int irq = irqUNKNOWN; | |
37 | static int txScrambled = 1; | |
38 | static int mdebug; | |
39 | ||
40 | module_param(irq, int, 0); | |
41 | module_param(mdebug, int, 0); | |
42 | module_param(testMemory, int, 0); | |
1da177e4 LT |
43 | module_param(txScrambled, int, 0); |
44 | MODULE_PARM_DESC(irq, "(unused)"); | |
45 | MODULE_PARM_DESC(testMemory, "(unused)"); | |
46 | MODULE_PARM_DESC(mdebug, "Arlan multicast debugging (0-1)"); | |
47 | #endif | |
48 | ||
5ccabb9b | 49 | module_param_named(debug, arlan_debug, int, 0); |
1da177e4 LT |
50 | module_param(spreadingCode, int, 0); |
51 | module_param(channelNumber, int, 0); | |
52 | module_param(channelSet, int, 0); | |
53 | module_param(systemId, int, 0); | |
54 | module_param(registrationMode, int, 0); | |
55 | module_param(radioNodeId, int, 0); | |
56 | module_param(SID, int, 0); | |
57 | module_param(keyStart, int, 0); | |
58 | module_param(tx_delay_ms, int, 0); | |
59 | module_param(retries, int, 0); | |
60 | module_param(tx_queue_len, int, 0); | |
5ccabb9b MD |
61 | module_param_named(EEPROM_bad, arlan_EEPROM_bad, int, 0); |
62 | MODULE_PARM_DESC(debug, "Arlan debug enable (0-1)"); | |
1da177e4 LT |
63 | MODULE_PARM_DESC(retries, "Arlan maximum packet retransmisions"); |
64 | #ifdef ARLAN_ENTRY_EXIT_DEBUGGING | |
5ccabb9b MD |
65 | static int arlan_entry_debug; |
66 | static int arlan_exit_debug; | |
67 | static int arlan_entry_and_exit_debug; | |
68 | module_param_named(entry_debug, arlan_entry_debug, int, 0); | |
69 | module_param_named(exit_debug, arlan_exit_debug, int, 0); | |
70 | module_param_named(entry_and_exit_debug, arlan_entry_and_exit_debug, int, 0); | |
71 | MODULE_PARM_DESC(entry_debug, "Arlan driver function entry debugging"); | |
72 | MODULE_PARM_DESC(exit_debug, "Arlan driver function exit debugging"); | |
73 | MODULE_PARM_DESC(entry_and_exit_debug, "Arlan driver function entry and exit debugging"); | |
1da177e4 LT |
74 | #endif |
75 | ||
76 | struct arlan_conf_stru arlan_conf[MAX_ARLANS]; | |
77 | static int arlans_found; | |
78 | ||
79 | static int arlan_open(struct net_device *dev); | |
80 | static int arlan_tx(struct sk_buff *skb, struct net_device *dev); | |
7d12e780 | 81 | static irqreturn_t arlan_interrupt(int irq, void *dev_id); |
1da177e4 LT |
82 | static int arlan_close(struct net_device *dev); |
83 | static struct net_device_stats * | |
84 | arlan_statistics (struct net_device *dev); | |
85 | static void arlan_set_multicast (struct net_device *dev); | |
86 | static int arlan_hw_tx (struct net_device* dev, char *buf, int length ); | |
87 | static int arlan_hw_config (struct net_device * dev); | |
88 | static void arlan_tx_done_interrupt (struct net_device * dev, int status); | |
89 | static void arlan_rx_interrupt (struct net_device * dev, u_char rxStatus, u_short, u_short); | |
90 | static void arlan_process_interrupt (struct net_device * dev); | |
91 | static void arlan_tx_timeout (struct net_device *dev); | |
92 | ||
93 | static inline long us2ticks(int us) | |
94 | { | |
95 | return us * (1000000 / HZ); | |
96 | } | |
97 | ||
98 | ||
99 | #ifdef ARLAN_ENTRY_EXIT_DEBUGGING | |
100 | #define ARLAN_DEBUG_ENTRY(name) \ | |
101 | {\ | |
102 | struct timeval timev;\ | |
103 | do_gettimeofday(&timev);\ | |
104 | if (arlan_entry_debug || arlan_entry_and_exit_debug)\ | |
105 | printk("--->>>" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec));\ | |
106 | } | |
107 | #define ARLAN_DEBUG_EXIT(name) \ | |
108 | {\ | |
109 | struct timeval timev;\ | |
110 | do_gettimeofday(&timev);\ | |
111 | if (arlan_exit_debug || arlan_entry_and_exit_debug)\ | |
112 | printk("<<<---" name " %ld " "\n",((long int) timev.tv_sec * 1000000 + timev.tv_usec) );\ | |
113 | } | |
114 | #else | |
115 | #define ARLAN_DEBUG_ENTRY(name) | |
116 | #define ARLAN_DEBUG_EXIT(name) | |
117 | #endif | |
118 | ||
119 | ||
120 | #define arlan_interrupt_ack(dev)\ | |
121 | clearClearInterrupt(dev);\ | |
122 | setClearInterrupt(dev); | |
123 | ||
124 | static inline int arlan_drop_tx(struct net_device *dev) | |
125 | { | |
126 | struct arlan_private *priv = netdev_priv(dev); | |
127 | ||
06a5223d | 128 | dev->stats.tx_errors++; |
1da177e4 LT |
129 | if (priv->Conf->tx_delay_ms) |
130 | { | |
131 | priv->tx_done_delayed = jiffies + priv->Conf->tx_delay_ms * HZ / 1000 + 1; | |
132 | } | |
133 | else | |
134 | { | |
135 | priv->waiting_command_mask &= ~ARLAN_COMMAND_TX; | |
136 | TXHEAD(dev).offset = 0; | |
137 | TXTAIL(dev).offset = 0; | |
138 | priv->txLast = 0; | |
139 | priv->bad = 0; | |
140 | if (!priv->under_reset && !priv->under_config) | |
141 | netif_wake_queue (dev); | |
142 | } | |
143 | return 1; | |
144 | } | |
145 | ||
146 | ||
147 | int arlan_command(struct net_device *dev, int command_p) | |
148 | { | |
149 | struct arlan_private *priv = netdev_priv(dev); | |
150 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
151 | struct arlan_conf_stru *conf = priv->Conf; | |
152 | int udelayed = 0; | |
153 | int i = 0; | |
154 | unsigned long flags; | |
155 | ||
156 | ARLAN_DEBUG_ENTRY("arlan_command"); | |
157 | ||
158 | if (priv->card_polling_interval) | |
159 | priv->card_polling_interval = 1; | |
160 | ||
161 | if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS) | |
162 | printk(KERN_DEBUG "arlan_command, %lx commandByte %x waiting %lx incoming %x \n", | |
163 | jiffies, READSHMB(arlan->commandByte), | |
164 | priv->waiting_command_mask, command_p); | |
165 | ||
166 | priv->waiting_command_mask |= command_p; | |
167 | ||
168 | if (priv->waiting_command_mask & ARLAN_COMMAND_RESET) | |
169 | if (time_after(jiffies, priv->lastReset + 5 * HZ)) | |
170 | priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET; | |
171 | ||
172 | if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ACK) | |
173 | { | |
174 | arlan_interrupt_ack(dev); | |
175 | priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ACK; | |
176 | } | |
177 | if (priv->waiting_command_mask & ARLAN_COMMAND_INT_ENABLE) | |
178 | { | |
179 | setInterruptEnable(dev); | |
180 | priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_ENABLE; | |
181 | } | |
182 | ||
183 | /* Card access serializing lock */ | |
184 | spin_lock_irqsave(&priv->lock, flags); | |
185 | ||
186 | /* Check cards status and waiting */ | |
187 | ||
188 | if (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW)) | |
189 | { | |
190 | while (priv->waiting_command_mask & (ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW)) | |
191 | { | |
192 | if (READSHMB(arlan->resetFlag) || | |
193 | READSHMB(arlan->commandByte)) /* || | |
194 | (readControlRegister(dev) & ARLAN_ACCESS)) | |
195 | */ | |
196 | udelay(40); | |
197 | else | |
198 | priv->waiting_command_mask &= ~(ARLAN_COMMAND_LONG_WAIT_NOW | ARLAN_COMMAND_WAIT_NOW); | |
199 | ||
200 | udelayed++; | |
201 | ||
202 | if (priv->waiting_command_mask & ARLAN_COMMAND_LONG_WAIT_NOW) | |
203 | { | |
204 | if (udelayed * 40 > 1000000) | |
205 | { | |
206 | printk(KERN_ERR "%s long wait too long \n", dev->name); | |
207 | priv->waiting_command_mask |= ARLAN_COMMAND_RESET; | |
208 | break; | |
209 | } | |
210 | } | |
211 | else if (priv->waiting_command_mask & ARLAN_COMMAND_WAIT_NOW) | |
212 | { | |
213 | if (udelayed * 40 > 1000) | |
214 | { | |
215 | printk(KERN_ERR "%s short wait too long \n", dev->name); | |
216 | goto bad_end; | |
217 | } | |
218 | } | |
219 | } | |
220 | } | |
221 | else | |
222 | { | |
223 | i = 0; | |
224 | while ((READSHMB(arlan->resetFlag) || | |
225 | READSHMB(arlan->commandByte)) && | |
226 | conf->pre_Command_Wait > (i++) * 10) | |
227 | udelay(10); | |
228 | ||
229 | ||
230 | if ((READSHMB(arlan->resetFlag) || | |
231 | READSHMB(arlan->commandByte)) && | |
232 | !(priv->waiting_command_mask & ARLAN_COMMAND_RESET)) | |
233 | { | |
234 | goto card_busy_end; | |
235 | } | |
236 | } | |
237 | if (priv->waiting_command_mask & ARLAN_COMMAND_RESET) | |
238 | priv->under_reset = 1; | |
239 | if (priv->waiting_command_mask & ARLAN_COMMAND_CONF) | |
240 | priv->under_config = 1; | |
241 | ||
242 | /* Issuing command */ | |
243 | arlan_lock_card_access(dev); | |
244 | if (priv->waiting_command_mask & ARLAN_COMMAND_POWERUP) | |
245 | { | |
246 | // if (readControlRegister(dev) & (ARLAN_ACCESS && ARLAN_POWER)) | |
247 | setPowerOn(dev); | |
248 | arlan_interrupt_lancpu(dev); | |
249 | priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERUP; | |
250 | priv->waiting_command_mask |= ARLAN_COMMAND_RESET; | |
251 | priv->card_polling_interval = HZ / 10; | |
252 | } | |
253 | else if (priv->waiting_command_mask & ARLAN_COMMAND_ACTIVATE) | |
254 | { | |
255 | WRITESHMB(arlan->commandByte, ARLAN_COM_ACTIVATE); | |
256 | arlan_interrupt_lancpu(dev); | |
257 | priv->waiting_command_mask &= ~ARLAN_COMMAND_ACTIVATE; | |
258 | priv->card_polling_interval = HZ / 10; | |
259 | } | |
260 | else if (priv->waiting_command_mask & ARLAN_COMMAND_RX_ABORT) | |
261 | { | |
262 | if (priv->rx_command_given) | |
263 | { | |
264 | WRITESHMB(arlan->commandByte, ARLAN_COM_RX_ABORT); | |
265 | arlan_interrupt_lancpu(dev); | |
266 | priv->rx_command_given = 0; | |
267 | } | |
268 | priv->waiting_command_mask &= ~ARLAN_COMMAND_RX_ABORT; | |
269 | priv->card_polling_interval = 1; | |
270 | } | |
271 | else if (priv->waiting_command_mask & ARLAN_COMMAND_TX_ABORT) | |
272 | { | |
273 | if (priv->tx_command_given) | |
274 | { | |
275 | WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ABORT); | |
276 | arlan_interrupt_lancpu(dev); | |
277 | priv->tx_command_given = 0; | |
278 | } | |
279 | priv->waiting_command_mask &= ~ARLAN_COMMAND_TX_ABORT; | |
280 | priv->card_polling_interval = 1; | |
281 | } | |
282 | else if (priv->waiting_command_mask & ARLAN_COMMAND_RESET) | |
283 | { | |
284 | priv->under_reset=1; | |
285 | netif_stop_queue (dev); | |
286 | ||
287 | arlan_drop_tx(dev); | |
288 | if (priv->tx_command_given || priv->rx_command_given) | |
289 | { | |
290 | printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name); | |
291 | } | |
292 | netif_stop_queue (dev); | |
293 | if (arlan_debug & ARLAN_DEBUG_RESET) | |
294 | printk(KERN_ERR "%s: Doing chip reset\n", dev->name); | |
295 | priv->lastReset = jiffies; | |
296 | WRITESHM(arlan->commandByte, 0, u_char); | |
297 | /* hold card in reset state */ | |
298 | setHardwareReset(dev); | |
299 | /* set reset flag and then release reset */ | |
300 | WRITESHM(arlan->resetFlag, 0xff, u_char); | |
301 | clearChannelAttention(dev); | |
302 | clearHardwareReset(dev); | |
303 | priv->card_polling_interval = HZ / 4; | |
304 | priv->waiting_command_mask &= ~ARLAN_COMMAND_RESET; | |
305 | priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK; | |
306 | // priv->waiting_command_mask |= ARLAN_COMMAND_INT_RENABLE; | |
307 | // priv->waiting_command_mask |= ARLAN_COMMAND_RX; | |
308 | } | |
309 | else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RACK) | |
310 | { | |
311 | clearHardwareReset(dev); | |
312 | clearClearInterrupt(dev); | |
313 | setClearInterrupt(dev); | |
314 | setInterruptEnable(dev); | |
315 | priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RACK; | |
316 | priv->waiting_command_mask |= ARLAN_COMMAND_CONF; | |
317 | priv->under_config = 1; | |
318 | priv->under_reset = 0; | |
319 | } | |
320 | else if (priv->waiting_command_mask & ARLAN_COMMAND_INT_RENABLE) | |
321 | { | |
322 | setInterruptEnable(dev); | |
323 | priv->waiting_command_mask &= ~ARLAN_COMMAND_INT_RENABLE; | |
324 | } | |
325 | else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF) | |
326 | { | |
327 | if (priv->tx_command_given || priv->rx_command_given) | |
328 | { | |
329 | printk(KERN_ERR "%s: Reset under tx or rx command \n", dev->name); | |
330 | } | |
331 | arlan_drop_tx(dev); | |
332 | setInterruptEnable(dev); | |
333 | arlan_hw_config(dev); | |
334 | arlan_interrupt_lancpu(dev); | |
335 | priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF; | |
336 | priv->card_polling_interval = HZ / 10; | |
337 | // priv->waiting_command_mask |= ARLAN_COMMAND_INT_RACK; | |
338 | // priv->waiting_command_mask |= ARLAN_COMMAND_INT_ENABLE; | |
339 | priv->waiting_command_mask |= ARLAN_COMMAND_CONF_WAIT; | |
340 | } | |
341 | else if (priv->waiting_command_mask & ARLAN_COMMAND_CONF_WAIT) | |
342 | { | |
343 | if (READSHMB(arlan->configuredStatusFlag) != 0 && | |
344 | READSHMB(arlan->diagnosticInfo) == 0xff) | |
345 | { | |
346 | priv->waiting_command_mask &= ~ARLAN_COMMAND_CONF_WAIT; | |
347 | priv->waiting_command_mask |= ARLAN_COMMAND_RX; | |
348 | priv->waiting_command_mask |= ARLAN_COMMAND_TBUSY_CLEAR; | |
349 | priv->card_polling_interval = HZ / 10; | |
350 | priv->tx_command_given = 0; | |
351 | priv->under_config = 0; | |
352 | } | |
353 | else | |
354 | { | |
355 | priv->card_polling_interval = 1; | |
356 | if (arlan_debug & ARLAN_DEBUG_TIMING) | |
357 | printk(KERN_ERR "configure delayed \n"); | |
358 | } | |
359 | } | |
360 | else if (priv->waiting_command_mask & ARLAN_COMMAND_RX) | |
361 | { | |
362 | if (!registrationBad(dev)) | |
363 | { | |
364 | setInterruptEnable(dev); | |
365 | memset_io(arlan->commandParameter, 0, 0xf); | |
366 | WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_RX_ENABLE); | |
367 | WRITESHMB(arlan->commandParameter[0], conf->rxParameter); | |
368 | arlan_interrupt_lancpu(dev); | |
369 | priv->rx_command_given = 0; // mnjah, bad | |
370 | priv->waiting_command_mask &= ~ARLAN_COMMAND_RX; | |
371 | priv->card_polling_interval = 1; | |
372 | } | |
373 | else | |
374 | priv->card_polling_interval = 2; | |
375 | } | |
376 | else if (priv->waiting_command_mask & ARLAN_COMMAND_TBUSY_CLEAR) | |
377 | { | |
378 | if ( !registrationBad(dev) && | |
379 | (netif_queue_stopped(dev) || !netif_running(dev)) ) | |
380 | { | |
381 | priv->waiting_command_mask &= ~ARLAN_COMMAND_TBUSY_CLEAR; | |
382 | netif_wake_queue (dev); | |
383 | } | |
384 | } | |
385 | else if (priv->waiting_command_mask & ARLAN_COMMAND_TX) | |
386 | { | |
387 | if (!test_and_set_bit(0, (void *) &priv->tx_command_given)) | |
388 | { | |
389 | if (time_after(jiffies, | |
390 | priv->tx_last_sent + us2ticks(conf->rx_tweak1)) | |
391 | || time_before(jiffies, | |
392 | priv->last_rx_int_ack_time + us2ticks(conf->rx_tweak2))) | |
393 | { | |
394 | setInterruptEnable(dev); | |
395 | memset_io(arlan->commandParameter, 0, 0xf); | |
396 | WRITESHMB(arlan->commandByte, ARLAN_COM_TX_ENABLE | ARLAN_COM_INT); | |
397 | memcpy_toio(arlan->commandParameter, &TXLAST(dev), 14); | |
398 | // for ( i=1 ; i < 15 ; i++) printk("%02x:",READSHMB(arlan->commandParameter[i])); | |
399 | priv->tx_last_sent = jiffies; | |
400 | arlan_interrupt_lancpu(dev); | |
401 | priv->tx_command_given = 1; | |
402 | priv->waiting_command_mask &= ~ARLAN_COMMAND_TX; | |
403 | priv->card_polling_interval = 1; | |
404 | } | |
405 | else | |
406 | { | |
407 | priv->tx_command_given = 0; | |
408 | priv->card_polling_interval = 1; | |
409 | } | |
410 | } | |
411 | else if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS) | |
412 | printk(KERN_ERR "tx command when tx chain locked \n"); | |
413 | } | |
414 | else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOPINT) | |
415 | { | |
416 | { | |
417 | WRITESHMB(arlan->commandByte, ARLAN_COM_NOP | ARLAN_COM_INT); | |
418 | } | |
419 | arlan_interrupt_lancpu(dev); | |
420 | priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOPINT; | |
421 | priv->card_polling_interval = HZ / 3; | |
422 | } | |
423 | else if (priv->waiting_command_mask & ARLAN_COMMAND_NOOP) | |
424 | { | |
425 | WRITESHMB(arlan->commandByte, ARLAN_COM_NOP); | |
426 | arlan_interrupt_lancpu(dev); | |
427 | priv->waiting_command_mask &= ~ARLAN_COMMAND_NOOP; | |
428 | priv->card_polling_interval = HZ / 3; | |
429 | } | |
430 | else if (priv->waiting_command_mask & ARLAN_COMMAND_SLOW_POLL) | |
431 | { | |
432 | WRITESHMB(arlan->commandByte, ARLAN_COM_GOTO_SLOW_POLL); | |
433 | arlan_interrupt_lancpu(dev); | |
434 | priv->waiting_command_mask &= ~ARLAN_COMMAND_SLOW_POLL; | |
435 | priv->card_polling_interval = HZ / 3; | |
436 | } | |
437 | else if (priv->waiting_command_mask & ARLAN_COMMAND_POWERDOWN) | |
438 | { | |
439 | setPowerOff(dev); | |
440 | if (arlan_debug & ARLAN_DEBUG_CARD_STATE) | |
441 | printk(KERN_WARNING "%s: Arlan Going Standby\n", dev->name); | |
442 | priv->waiting_command_mask &= ~ARLAN_COMMAND_POWERDOWN; | |
443 | priv->card_polling_interval = 3 * HZ; | |
444 | } | |
445 | arlan_unlock_card_access(dev); | |
446 | for (i = 0; READSHMB(arlan->commandByte) && i < 20; i++) | |
447 | udelay(10); | |
448 | if (READSHMB(arlan->commandByte)) | |
449 | if (arlan_debug & ARLAN_DEBUG_CARD_STATE) | |
450 | printk(KERN_ERR "card busy leaving command %lx\n", priv->waiting_command_mask); | |
451 | ||
452 | spin_unlock_irqrestore(&priv->lock, flags); | |
453 | ARLAN_DEBUG_EXIT("arlan_command"); | |
454 | priv->last_command_buff_free_time = jiffies; | |
455 | return 0; | |
456 | ||
457 | card_busy_end: | |
458 | if (time_after(jiffies, priv->last_command_buff_free_time + HZ)) | |
459 | priv->waiting_command_mask |= ARLAN_COMMAND_CLEAN_AND_RESET; | |
460 | ||
461 | if (arlan_debug & ARLAN_DEBUG_CARD_STATE) | |
462 | printk(KERN_ERR "%s arlan_command card busy end \n", dev->name); | |
463 | spin_unlock_irqrestore(&priv->lock, flags); | |
464 | ARLAN_DEBUG_EXIT("arlan_command"); | |
465 | return 1; | |
466 | ||
467 | bad_end: | |
468 | printk(KERN_ERR "%s arlan_command bad end \n", dev->name); | |
469 | ||
470 | spin_unlock_irqrestore(&priv->lock, flags); | |
471 | ARLAN_DEBUG_EXIT("arlan_command"); | |
472 | ||
473 | return -1; | |
474 | } | |
475 | ||
476 | static inline void arlan_command_process(struct net_device *dev) | |
477 | { | |
478 | struct arlan_private *priv = netdev_priv(dev); | |
479 | ||
480 | int times = 0; | |
481 | while (priv->waiting_command_mask && times < 8) | |
482 | { | |
483 | if (priv->waiting_command_mask) | |
484 | { | |
485 | if (arlan_command(dev, 0)) | |
486 | break; | |
487 | times++; | |
488 | } | |
489 | /* if long command, we won't repeat trying */ ; | |
490 | if (priv->card_polling_interval > 1) | |
491 | break; | |
492 | times++; | |
493 | } | |
494 | } | |
495 | ||
496 | ||
497 | static inline void arlan_retransmit_now(struct net_device *dev) | |
498 | { | |
499 | struct arlan_private *priv = netdev_priv(dev); | |
500 | ||
501 | ||
502 | ARLAN_DEBUG_ENTRY("arlan_retransmit_now"); | |
503 | if (TXLAST(dev).offset == 0) | |
504 | { | |
505 | if (TXHEAD(dev).offset) | |
506 | { | |
507 | priv->txLast = 0; | |
508 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to head \n"); | |
509 | ||
510 | } | |
511 | else if (TXTAIL(dev).offset) | |
512 | { | |
513 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_DEBUG "TX buff switch to tail \n"); | |
514 | priv->txLast = 1; | |
515 | } | |
516 | else | |
517 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "ReTransmit buff empty"); | |
518 | netif_wake_queue (dev); | |
519 | return; | |
520 | ||
521 | } | |
522 | arlan_command(dev, ARLAN_COMMAND_TX); | |
523 | ||
524 | priv->Conf->driverRetransmissions++; | |
525 | priv->retransmissions++; | |
526 | ||
527 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("Retransmit %d bytes \n", TXLAST(dev).length); | |
528 | ||
529 | ARLAN_DEBUG_EXIT("arlan_retransmit_now"); | |
530 | } | |
531 | ||
532 | ||
533 | ||
534 | static void arlan_registration_timer(unsigned long data) | |
535 | { | |
536 | struct net_device *dev = (struct net_device *) data; | |
537 | struct arlan_private *priv = netdev_priv(dev); | |
538 | int bh_mark_needed = 0; | |
539 | int next_tick = 1; | |
540 | long lostTime = ((long)jiffies - (long)priv->registrationLastSeen) | |
541 | * (1000/HZ); | |
542 | ||
543 | if (registrationBad(dev)) | |
544 | { | |
545 | priv->registrationLostCount++; | |
546 | if (lostTime > 7000 && lostTime < 7200) | |
547 | { | |
548 | printk(KERN_NOTICE "%s registration Lost \n", dev->name); | |
549 | } | |
550 | if (lostTime / priv->reRegisterExp > 2000) | |
551 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF); | |
552 | if (lostTime / (priv->reRegisterExp) > 3500) | |
553 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET); | |
554 | if (priv->reRegisterExp < 400) | |
555 | priv->reRegisterExp += 2; | |
556 | if (lostTime > 7200) | |
557 | { | |
558 | next_tick = HZ; | |
559 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET); | |
560 | } | |
561 | } | |
562 | else | |
563 | { | |
564 | if (priv->Conf->registrationMode && lostTime > 10000 && | |
565 | priv->registrationLostCount) | |
566 | { | |
567 | printk(KERN_NOTICE "%s registration is back after %ld milliseconds\n", | |
568 | dev->name, lostTime); | |
569 | } | |
570 | priv->registrationLastSeen = jiffies; | |
571 | priv->registrationLostCount = 0; | |
572 | priv->reRegisterExp = 1; | |
573 | if (!netif_running(dev) ) | |
574 | netif_wake_queue(dev); | |
575 | if (time_after(priv->tx_last_sent,priv->tx_last_cleared) && | |
576 | time_after(jiffies, priv->tx_last_sent * 5*HZ) ){ | |
577 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET); | |
578 | priv->tx_last_cleared = jiffies; | |
579 | } | |
580 | } | |
581 | ||
582 | ||
583 | if (!registrationBad(dev) && priv->ReTransmitRequested) | |
584 | { | |
585 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
586 | printk(KERN_ERR "Retransmit from timer \n"); | |
587 | priv->ReTransmitRequested = 0; | |
588 | arlan_retransmit_now(dev); | |
589 | } | |
590 | if (!registrationBad(dev) && | |
591 | time_after(jiffies, priv->tx_done_delayed) && | |
592 | priv->tx_done_delayed != 0) | |
593 | { | |
594 | TXLAST(dev).offset = 0; | |
595 | if (priv->txLast) | |
596 | priv->txLast = 0; | |
597 | else if (TXTAIL(dev).offset) | |
598 | priv->txLast = 1; | |
599 | if (TXLAST(dev).offset) | |
600 | { | |
601 | arlan_retransmit_now(dev); | |
602 | dev->trans_start = jiffies; | |
603 | } | |
604 | if (!(TXHEAD(dev).offset && TXTAIL(dev).offset)) | |
605 | { | |
606 | netif_wake_queue (dev); | |
607 | } | |
608 | priv->tx_done_delayed = 0; | |
609 | bh_mark_needed = 1; | |
610 | } | |
611 | if (bh_mark_needed) | |
612 | { | |
613 | netif_wake_queue (dev); | |
614 | } | |
615 | arlan_process_interrupt(dev); | |
616 | ||
617 | if (next_tick < priv->card_polling_interval) | |
618 | next_tick = priv->card_polling_interval; | |
619 | ||
620 | priv->timer.expires = jiffies + next_tick; | |
621 | ||
622 | add_timer(&priv->timer); | |
623 | } | |
624 | ||
625 | ||
626 | #ifdef ARLAN_DEBUGGING | |
627 | ||
628 | static void arlan_print_registers(struct net_device *dev, int line) | |
629 | { | |
630 | struct arlan_private *priv = netdev_priv(dev); | |
631 | volatile struct arlan_shmem *arlan = priv->card; | |
632 | ||
633 | u_char hostcpuLock, lancpuLock, controlRegister, cntrlRegImage, | |
634 | txStatus, rxStatus, interruptInProgress, commandByte; | |
635 | ||
636 | ||
637 | ARLAN_DEBUG_ENTRY("arlan_print_registers"); | |
638 | READSHM(interruptInProgress, arlan->interruptInProgress, u_char); | |
639 | READSHM(hostcpuLock, arlan->hostcpuLock, u_char); | |
640 | READSHM(lancpuLock, arlan->lancpuLock, u_char); | |
641 | READSHM(controlRegister, arlan->controlRegister, u_char); | |
642 | READSHM(cntrlRegImage, arlan->cntrlRegImage, u_char); | |
643 | READSHM(txStatus, arlan->txStatus, u_char); | |
644 | READSHM(rxStatus, arlan->rxStatus, u_char); | |
645 | READSHM(commandByte, arlan->commandByte, u_char); | |
646 | ||
647 | printk(KERN_WARNING "line %04d IP %02x HL %02x LL %02x CB %02x CR %02x CRI %02x TX %02x RX %02x\n", | |
648 | line, interruptInProgress, hostcpuLock, lancpuLock, commandByte, | |
649 | controlRegister, cntrlRegImage, txStatus, rxStatus); | |
650 | ||
651 | ARLAN_DEBUG_EXIT("arlan_print_registers"); | |
652 | } | |
653 | #endif | |
654 | ||
655 | ||
656 | static int arlan_hw_tx(struct net_device *dev, char *buf, int length) | |
657 | { | |
658 | int i; | |
659 | ||
660 | struct arlan_private *priv = netdev_priv(dev); | |
661 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
662 | struct arlan_conf_stru *conf = priv->Conf; | |
663 | ||
664 | int tailStarts = 0x800; | |
665 | int headEnds = 0x0; | |
666 | ||
667 | ||
668 | ARLAN_DEBUG_ENTRY("arlan_hw_tx"); | |
669 | if (TXHEAD(dev).offset) | |
670 | headEnds = (((TXHEAD(dev).offset + TXHEAD(dev).length - offsetof(struct arlan_shmem, txBuffer)) / 64) + 1) * 64; | |
671 | if (TXTAIL(dev).offset) | |
672 | tailStarts = 0x800 - (((TXTAIL(dev).offset - offsetof(struct arlan_shmem, txBuffer)) / 64) + 2) * 64; | |
673 | ||
674 | ||
675 | if (!TXHEAD(dev).offset && length < tailStarts) | |
676 | { | |
677 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
678 | printk(KERN_ERR "TXHEAD insert, tailStart %d\n", tailStarts); | |
679 | ||
680 | TXHEAD(dev).offset = | |
681 | offsetof(struct arlan_shmem, txBuffer); | |
682 | TXHEAD(dev).length = length - ARLAN_FAKE_HDR_LEN; | |
683 | for (i = 0; i < 6; i++) | |
684 | TXHEAD(dev).dest[i] = buf[i]; | |
685 | TXHEAD(dev).clear = conf->txClear; | |
686 | TXHEAD(dev).retries = conf->txRetries; /* 0 is use default */ | |
687 | TXHEAD(dev).routing = conf->txRouting; | |
688 | TXHEAD(dev).scrambled = conf->txScrambled; | |
689 | memcpy_toio((char __iomem *)arlan + TXHEAD(dev).offset, buf + ARLAN_FAKE_HDR_LEN, TXHEAD(dev).length); | |
690 | } | |
691 | else if (!TXTAIL(dev).offset && length < (0x800 - headEnds)) | |
692 | { | |
693 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
694 | printk(KERN_ERR "TXTAIL insert, headEnd %d\n", headEnds); | |
695 | ||
696 | TXTAIL(dev).offset = | |
697 | offsetof(struct arlan_shmem, txBuffer) + 0x800 - (length / 64 + 2) * 64; | |
698 | TXTAIL(dev).length = length - ARLAN_FAKE_HDR_LEN; | |
699 | for (i = 0; i < 6; i++) | |
700 | TXTAIL(dev).dest[i] = buf[i]; | |
701 | TXTAIL(dev).clear = conf->txClear; | |
702 | TXTAIL(dev).retries = conf->txRetries; | |
703 | TXTAIL(dev).routing = conf->txRouting; | |
704 | TXTAIL(dev).scrambled = conf->txScrambled; | |
705 | memcpy_toio(((char __iomem *)arlan + TXTAIL(dev).offset), buf + ARLAN_FAKE_HDR_LEN, TXTAIL(dev).length); | |
706 | } | |
707 | else | |
708 | { | |
709 | netif_stop_queue (dev); | |
710 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
711 | printk(KERN_ERR "TX TAIL & HEAD full, return, tailStart %d headEnd %d\n", tailStarts, headEnds); | |
712 | return -1; | |
713 | } | |
714 | priv->out_bytes += length; | |
715 | priv->out_bytes10 += length; | |
716 | if (conf->measure_rate < 1) | |
717 | conf->measure_rate = 1; | |
718 | if (time_after(jiffies, priv->out_time + conf->measure_rate * HZ)) | |
719 | { | |
720 | conf->out_speed = priv->out_bytes / conf->measure_rate; | |
721 | priv->out_bytes = 0; | |
722 | priv->out_time = jiffies; | |
723 | } | |
724 | if (time_after(jiffies, priv->out_time10 + conf->measure_rate * 10*HZ)) | |
725 | { | |
726 | conf->out_speed10 = priv->out_bytes10 / (10 * conf->measure_rate); | |
727 | priv->out_bytes10 = 0; | |
728 | priv->out_time10 = jiffies; | |
729 | } | |
730 | if (TXHEAD(dev).offset && TXTAIL(dev).offset) | |
731 | { | |
732 | netif_stop_queue (dev); | |
733 | return 0; | |
734 | } | |
735 | else | |
736 | netif_start_queue (dev); | |
737 | ||
738 | ||
739 | IFDEBUG(ARLAN_DEBUG_HEADER_DUMP) | |
740 | printk(KERN_WARNING "%s Transmit t %2x:%2x:%2x:%2x:%2x:%2x f %2x:%2x:%2x:%2x:%2x:%2x \n", dev->name, | |
741 | (unsigned char) buf[0], (unsigned char) buf[1], (unsigned char) buf[2], (unsigned char) buf[3], | |
742 | (unsigned char) buf[4], (unsigned char) buf[5], (unsigned char) buf[6], (unsigned char) buf[7], | |
743 | (unsigned char) buf[8], (unsigned char) buf[9], (unsigned char) buf[10], (unsigned char) buf[11]); | |
744 | ||
745 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk(KERN_ERR "TX command prepare for buffer %d\n", priv->txLast); | |
746 | ||
747 | arlan_command(dev, ARLAN_COMMAND_TX); | |
748 | ||
749 | priv->tx_last_sent = jiffies; | |
750 | ||
751 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) printk("%s TX Qued %d bytes \n", dev->name, length); | |
752 | ||
753 | ARLAN_DEBUG_EXIT("arlan_hw_tx"); | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
758 | ||
759 | static int arlan_hw_config(struct net_device *dev) | |
760 | { | |
761 | struct arlan_private *priv = netdev_priv(dev); | |
762 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
763 | struct arlan_conf_stru *conf = priv->Conf; | |
764 | ||
765 | ARLAN_DEBUG_ENTRY("arlan_hw_config"); | |
766 | ||
767 | printk(KERN_NOTICE "%s arlan configure called \n", dev->name); | |
768 | if (arlan_EEPROM_bad) | |
769 | printk(KERN_NOTICE "arlan configure with eeprom bad option \n"); | |
770 | ||
771 | ||
772 | WRITESHM(arlan->spreadingCode, conf->spreadingCode, u_char); | |
773 | WRITESHM(arlan->channelSet, conf->channelSet, u_char); | |
774 | ||
775 | if (arlan_EEPROM_bad) | |
776 | WRITESHM(arlan->defaultChannelSet, conf->channelSet, u_char); | |
777 | ||
778 | WRITESHM(arlan->channelNumber, conf->channelNumber, u_char); | |
779 | ||
780 | WRITESHM(arlan->scramblingDisable, conf->scramblingDisable, u_char); | |
781 | WRITESHM(arlan->txAttenuation, conf->txAttenuation, u_char); | |
782 | ||
783 | WRITESHM(arlan->systemId, conf->systemId, u_int); | |
784 | ||
785 | WRITESHM(arlan->maxRetries, conf->maxRetries, u_char); | |
786 | WRITESHM(arlan->receiveMode, conf->receiveMode, u_char); | |
787 | WRITESHM(arlan->priority, conf->priority, u_char); | |
788 | WRITESHM(arlan->rootOrRepeater, conf->rootOrRepeater, u_char); | |
789 | WRITESHM(arlan->SID, conf->SID, u_int); | |
790 | ||
791 | WRITESHM(arlan->registrationMode, conf->registrationMode, u_char); | |
792 | ||
793 | WRITESHM(arlan->registrationFill, conf->registrationFill, u_char); | |
794 | WRITESHM(arlan->localTalkAddress, conf->localTalkAddress, u_char); | |
795 | WRITESHM(arlan->codeFormat, conf->codeFormat, u_char); | |
796 | WRITESHM(arlan->numChannels, conf->numChannels, u_char); | |
797 | WRITESHM(arlan->channel1, conf->channel1, u_char); | |
798 | WRITESHM(arlan->channel2, conf->channel2, u_char); | |
799 | WRITESHM(arlan->channel3, conf->channel3, u_char); | |
800 | WRITESHM(arlan->channel4, conf->channel4, u_char); | |
801 | WRITESHM(arlan->radioNodeId, conf->radioNodeId, u_short); | |
802 | WRITESHM(arlan->SID, conf->SID, u_int); | |
803 | WRITESHM(arlan->waitTime, conf->waitTime, u_short); | |
804 | WRITESHM(arlan->lParameter, conf->lParameter, u_short); | |
805 | memcpy_toio(&(arlan->_15), &(conf->_15), 3); | |
806 | WRITESHM(arlan->_15, conf->_15, u_short); | |
807 | WRITESHM(arlan->headerSize, conf->headerSize, u_short); | |
808 | if (arlan_EEPROM_bad) | |
809 | WRITESHM(arlan->hardwareType, conf->hardwareType, u_char); | |
810 | WRITESHM(arlan->radioType, conf->radioType, u_char); | |
811 | if (arlan_EEPROM_bad) | |
812 | WRITESHM(arlan->radioModule, conf->radioType, u_char); | |
813 | ||
814 | memcpy_toio(arlan->encryptionKey + keyStart, encryptionKey, 8); | |
815 | memcpy_toio(arlan->name, conf->siteName, 16); | |
816 | ||
817 | WRITESHMB(arlan->commandByte, ARLAN_COM_INT | ARLAN_COM_CONF); /* do configure */ | |
818 | memset_io(arlan->commandParameter, 0, 0xf); /* 0xf */ | |
819 | memset_io(arlan->commandParameter + 1, 0, 2); | |
820 | if (conf->writeEEPROM) | |
821 | { | |
822 | memset_io(arlan->commandParameter, conf->writeEEPROM, 1); | |
823 | // conf->writeEEPROM=0; | |
824 | } | |
825 | if (conf->registrationMode && conf->registrationInterrupts) | |
826 | memset_io(arlan->commandParameter + 3, 1, 1); | |
827 | else | |
828 | memset_io(arlan->commandParameter + 3, 0, 1); | |
829 | ||
830 | priv->irq_test_done = 0; | |
831 | ||
832 | if (conf->tx_queue_len) | |
833 | dev->tx_queue_len = conf->tx_queue_len; | |
834 | udelay(100); | |
835 | ||
836 | ARLAN_DEBUG_EXIT("arlan_hw_config"); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | ||
841 | static int arlan_read_card_configuration(struct net_device *dev) | |
842 | { | |
843 | u_char tlx415; | |
844 | struct arlan_private *priv = netdev_priv(dev); | |
845 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
846 | struct arlan_conf_stru *conf = priv->Conf; | |
847 | ||
848 | ARLAN_DEBUG_ENTRY("arlan_read_card_configuration"); | |
849 | ||
850 | if (radioNodeId == radioNodeIdUNKNOWN) | |
851 | { | |
852 | READSHM(conf->radioNodeId, arlan->radioNodeId, u_short); | |
853 | } | |
854 | else | |
855 | conf->radioNodeId = radioNodeId; | |
856 | ||
857 | if (SID == SIDUNKNOWN) | |
858 | { | |
859 | READSHM(conf->SID, arlan->SID, u_int); | |
860 | } | |
861 | else conf->SID = SID; | |
862 | ||
863 | if (spreadingCode == spreadingCodeUNKNOWN) | |
864 | { | |
865 | READSHM(conf->spreadingCode, arlan->spreadingCode, u_char); | |
866 | } | |
867 | else | |
868 | conf->spreadingCode = spreadingCode; | |
869 | ||
870 | if (channelSet == channelSetUNKNOWN) | |
871 | { | |
872 | READSHM(conf->channelSet, arlan->channelSet, u_char); | |
873 | } | |
874 | else conf->channelSet = channelSet; | |
875 | ||
876 | if (channelNumber == channelNumberUNKNOWN) | |
877 | { | |
878 | READSHM(conf->channelNumber, arlan->channelNumber, u_char); | |
879 | } | |
880 | else conf->channelNumber = channelNumber; | |
881 | ||
882 | READSHM(conf->scramblingDisable, arlan->scramblingDisable, u_char); | |
883 | READSHM(conf->txAttenuation, arlan->txAttenuation, u_char); | |
884 | ||
885 | if (systemId == systemIdUNKNOWN) | |
886 | { | |
887 | READSHM(conf->systemId, arlan->systemId, u_int); | |
888 | } | |
889 | else conf->systemId = systemId; | |
890 | ||
891 | READSHM(conf->maxDatagramSize, arlan->maxDatagramSize, u_short); | |
892 | READSHM(conf->maxFrameSize, arlan->maxFrameSize, u_short); | |
893 | READSHM(conf->maxRetries, arlan->maxRetries, u_char); | |
894 | READSHM(conf->receiveMode, arlan->receiveMode, u_char); | |
895 | READSHM(conf->priority, arlan->priority, u_char); | |
896 | READSHM(conf->rootOrRepeater, arlan->rootOrRepeater, u_char); | |
897 | ||
898 | if (SID == SIDUNKNOWN) | |
899 | { | |
900 | READSHM(conf->SID, arlan->SID, u_int); | |
901 | } | |
902 | else conf->SID = SID; | |
903 | ||
904 | if (registrationMode == registrationModeUNKNOWN) | |
905 | { | |
906 | READSHM(conf->registrationMode, arlan->registrationMode, u_char); | |
907 | } | |
908 | else conf->registrationMode = registrationMode; | |
909 | ||
910 | READSHM(conf->registrationFill, arlan->registrationFill, u_char); | |
911 | READSHM(conf->localTalkAddress, arlan->localTalkAddress, u_char); | |
912 | READSHM(conf->codeFormat, arlan->codeFormat, u_char); | |
913 | READSHM(conf->numChannels, arlan->numChannels, u_char); | |
914 | READSHM(conf->channel1, arlan->channel1, u_char); | |
915 | READSHM(conf->channel2, arlan->channel2, u_char); | |
916 | READSHM(conf->channel3, arlan->channel3, u_char); | |
917 | READSHM(conf->channel4, arlan->channel4, u_char); | |
918 | READSHM(conf->waitTime, arlan->waitTime, u_short); | |
919 | READSHM(conf->lParameter, arlan->lParameter, u_short); | |
920 | READSHM(conf->_15, arlan->_15, u_short); | |
921 | READSHM(conf->headerSize, arlan->headerSize, u_short); | |
922 | READSHM(conf->hardwareType, arlan->hardwareType, u_char); | |
923 | READSHM(conf->radioType, arlan->radioModule, u_char); | |
924 | ||
925 | if (conf->radioType == 0) | |
926 | conf->radioType = 0xc; | |
927 | ||
928 | WRITESHM(arlan->configStatus, 0xA5, u_char); | |
929 | READSHM(tlx415, arlan->configStatus, u_char); | |
930 | ||
931 | if (tlx415 != 0xA5) | |
932 | printk(KERN_INFO "%s tlx415 chip \n", dev->name); | |
933 | ||
934 | conf->txClear = 0; | |
935 | conf->txRetries = 1; | |
936 | conf->txRouting = 1; | |
937 | conf->txScrambled = 0; | |
938 | conf->rxParameter = 1; | |
939 | conf->txTimeoutMs = 4000; | |
940 | conf->waitCardTimeout = 100000; | |
941 | conf->receiveMode = ARLAN_RCV_CLEAN; | |
942 | memcpy_fromio(conf->siteName, arlan->name, 16); | |
943 | conf->siteName[16] = '\0'; | |
944 | conf->retries = retries; | |
945 | conf->tx_delay_ms = tx_delay_ms; | |
946 | conf->ReTransmitPacketMaxSize = 200; | |
947 | conf->waitReTransmitPacketMaxSize = 200; | |
948 | conf->txAckTimeoutMs = 900; | |
949 | conf->fastReTransCount = 3; | |
950 | ||
951 | ARLAN_DEBUG_EXIT("arlan_read_card_configuration"); | |
952 | ||
953 | return 0; | |
954 | } | |
955 | ||
956 | ||
957 | static int lastFoundAt = 0xbe000; | |
958 | ||
959 | ||
960 | /* | |
961 | * This is the real probe routine. Linux has a history of friendly device | |
962 | * probes on the ISA bus. A good device probes avoids doing writes, and | |
963 | * verifies that the correct device exists and functions. | |
964 | */ | |
965 | #define ARLAN_SHMEM_SIZE 0x2000 | |
966 | static int __init arlan_check_fingerprint(unsigned long memaddr) | |
967 | { | |
968 | static const char probeText[] = "TELESYSTEM SLW INC. ARLAN \0"; | |
969 | volatile struct arlan_shmem __iomem *arlan = (struct arlan_shmem *) memaddr; | |
970 | unsigned long paddr = virt_to_phys((void *) memaddr); | |
971 | char tempBuf[49]; | |
972 | ||
973 | ARLAN_DEBUG_ENTRY("arlan_check_fingerprint"); | |
974 | ||
975 | if (!request_mem_region(paddr, ARLAN_SHMEM_SIZE, "arlan")) { | |
976 | // printk(KERN_WARNING "arlan: memory region %lx excluded from probing \n",paddr); | |
977 | return -ENODEV; | |
978 | } | |
979 | ||
980 | memcpy_fromio(tempBuf, arlan->textRegion, 29); | |
981 | tempBuf[30] = 0; | |
982 | ||
983 | /* check for card at this address */ | |
984 | if (0 != strncmp(tempBuf, probeText, 29)){ | |
985 | release_mem_region(paddr, ARLAN_SHMEM_SIZE); | |
986 | return -ENODEV; | |
987 | } | |
988 | ||
989 | // printk(KERN_INFO "arlan found at 0x%x \n",memaddr); | |
990 | ARLAN_DEBUG_EXIT("arlan_check_fingerprint"); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
995 | static int arlan_change_mtu(struct net_device *dev, int new_mtu) | |
996 | { | |
997 | struct arlan_private *priv = netdev_priv(dev); | |
998 | struct arlan_conf_stru *conf = priv->Conf; | |
999 | ||
1000 | ARLAN_DEBUG_ENTRY("arlan_change_mtu"); | |
1001 | if (new_mtu > 2032) | |
1002 | return -EINVAL; | |
1003 | dev->mtu = new_mtu; | |
1004 | if (new_mtu < 256) | |
1005 | new_mtu = 256; /* cards book suggests 1600 */ | |
1006 | conf->maxDatagramSize = new_mtu; | |
1007 | conf->maxFrameSize = new_mtu + 48; | |
1008 | ||
1009 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_CONF); | |
1010 | printk(KERN_NOTICE "%s mtu changed to %d \n", dev->name, new_mtu); | |
1011 | ||
1012 | ARLAN_DEBUG_EXIT("arlan_change_mtu"); | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | static int arlan_mac_addr(struct net_device *dev, void *p) | |
1018 | { | |
1019 | struct sockaddr *addr = p; | |
1020 | ||
1021 | ||
1022 | ARLAN_DEBUG_ENTRY("arlan_mac_addr"); | |
1023 | return -EINVAL; | |
1024 | ||
1025 | if (!netif_running(dev)) | |
1026 | return -EBUSY; | |
1027 | memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); | |
1028 | ||
1029 | ARLAN_DEBUG_EXIT("arlan_mac_addr"); | |
1030 | return 0; | |
1031 | } | |
1032 | ||
8fdcf1ab SH |
1033 | static const struct net_device_ops arlan_netdev_ops = { |
1034 | .ndo_open = arlan_open, | |
1035 | .ndo_stop = arlan_close, | |
1036 | .ndo_start_xmit = arlan_tx, | |
1037 | .ndo_get_stats = arlan_statistics, | |
1038 | .ndo_set_multicast_list = arlan_set_multicast, | |
1039 | .ndo_change_mtu = arlan_change_mtu, | |
1040 | .ndo_set_mac_address = arlan_mac_addr, | |
1041 | .ndo_tx_timeout = arlan_tx_timeout, | |
1042 | .ndo_validate_addr = eth_validate_addr, | |
1043 | }; | |
1da177e4 LT |
1044 | |
1045 | static int __init arlan_setup_device(struct net_device *dev, int num) | |
1046 | { | |
1047 | struct arlan_private *ap = netdev_priv(dev); | |
1048 | int err; | |
1049 | ||
1050 | ARLAN_DEBUG_ENTRY("arlan_setup_device"); | |
1051 | ||
1052 | ap->conf = (struct arlan_shmem *)(ap+1); | |
1053 | ||
1054 | dev->tx_queue_len = tx_queue_len; | |
8fdcf1ab | 1055 | dev->netdev_ops = &arlan_netdev_ops; |
1da177e4 LT |
1056 | dev->watchdog_timeo = 3*HZ; |
1057 | ||
1058 | ap->irq_test_done = 0; | |
1059 | ap->Conf = &arlan_conf[num]; | |
1060 | ||
1061 | ap->Conf->pre_Command_Wait = 40; | |
1062 | ap->Conf->rx_tweak1 = 30; | |
1063 | ap->Conf->rx_tweak2 = 0; | |
1064 | ||
1065 | ||
1066 | err = register_netdev(dev); | |
1067 | if (err) { | |
1068 | release_mem_region(virt_to_phys((void *) dev->mem_start), | |
1069 | ARLAN_SHMEM_SIZE); | |
1070 | free_netdev(dev); | |
1071 | return err; | |
1072 | } | |
1073 | arlan_device[num] = dev; | |
1074 | ARLAN_DEBUG_EXIT("arlan_setup_device"); | |
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | static int __init arlan_probe_here(struct net_device *dev, | |
1079 | unsigned long memaddr) | |
1080 | { | |
1081 | struct arlan_private *ap = netdev_priv(dev); | |
1082 | ||
1083 | ARLAN_DEBUG_ENTRY("arlan_probe_here"); | |
1084 | ||
1085 | if (arlan_check_fingerprint(memaddr)) | |
1086 | return -ENODEV; | |
1087 | ||
89e4b593 JSR |
1088 | printk(KERN_NOTICE "%s: Arlan found at %llx, \n ", dev->name, |
1089 | (u64) virt_to_phys((void*)memaddr)); | |
1da177e4 LT |
1090 | |
1091 | ap->card = (void *) memaddr; | |
1092 | dev->mem_start = memaddr; | |
1093 | dev->mem_end = memaddr + ARLAN_SHMEM_SIZE-1; | |
1094 | ||
1095 | if (dev->irq < 2) | |
1096 | { | |
1097 | READSHM(dev->irq, ap->card->irqLevel, u_char); | |
1098 | } else if (dev->irq == 2) | |
1099 | dev->irq = 9; | |
1100 | ||
1101 | arlan_read_card_configuration(dev); | |
1102 | ||
1103 | ARLAN_DEBUG_EXIT("arlan_probe_here"); | |
1104 | return 0; | |
1105 | } | |
1106 | ||
1107 | ||
1108 | static int arlan_open(struct net_device *dev) | |
1109 | { | |
1110 | struct arlan_private *priv = netdev_priv(dev); | |
1111 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1112 | int ret = 0; | |
1113 | ||
1114 | ARLAN_DEBUG_ENTRY("arlan_open"); | |
1115 | ||
1116 | ret = request_irq(dev->irq, &arlan_interrupt, 0, dev->name, dev); | |
1117 | if (ret) | |
1118 | { | |
1119 | printk(KERN_ERR "%s: unable to get IRQ %d .\n", | |
1120 | dev->name, dev->irq); | |
1121 | return ret; | |
1122 | } | |
1123 | ||
1124 | ||
1125 | priv->bad = 0; | |
1126 | priv->lastReset = 0; | |
1127 | priv->reset = 0; | |
1128 | memcpy_fromio(dev->dev_addr, arlan->lanCardNodeId, 6); | |
1129 | memset(dev->broadcast, 0xff, 6); | |
1130 | dev->tx_queue_len = tx_queue_len; | |
1131 | priv->interrupt_processing_active = 0; | |
1132 | spin_lock_init(&priv->lock); | |
1133 | ||
1134 | netif_start_queue (dev); | |
1135 | ||
1136 | priv->registrationLostCount = 0; | |
1137 | priv->registrationLastSeen = jiffies; | |
1138 | priv->txLast = 0; | |
1139 | priv->tx_command_given = 0; | |
1140 | priv->rx_command_given = 0; | |
1141 | ||
1142 | priv->reRegisterExp = 1; | |
1143 | priv->tx_last_sent = jiffies - 1; | |
1144 | priv->tx_last_cleared = jiffies; | |
1145 | priv->Conf->writeEEPROM = 0; | |
1146 | priv->Conf->registrationInterrupts = 1; | |
1147 | ||
1148 | init_timer(&priv->timer); | |
1149 | priv->timer.expires = jiffies + HZ / 10; | |
1150 | priv->timer.data = (unsigned long) dev; | |
1151 | priv->timer.function = &arlan_registration_timer; /* timer handler */ | |
1152 | ||
1153 | arlan_command(dev, ARLAN_COMMAND_POWERUP | ARLAN_COMMAND_LONG_WAIT_NOW); | |
1154 | mdelay(200); | |
1155 | add_timer(&priv->timer); | |
1156 | ||
1157 | ARLAN_DEBUG_EXIT("arlan_open"); | |
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | ||
1162 | static void arlan_tx_timeout (struct net_device *dev) | |
1163 | { | |
1164 | printk(KERN_ERR "%s: arlan transmit timed out, kernel decided\n", dev->name); | |
1165 | /* Try to restart the adaptor. */ | |
1166 | arlan_command(dev, ARLAN_COMMAND_CLEAN_AND_RESET); | |
1167 | // dev->trans_start = jiffies; | |
1168 | // netif_start_queue (dev); | |
1169 | } | |
1170 | ||
1171 | ||
1172 | static int arlan_tx(struct sk_buff *skb, struct net_device *dev) | |
1173 | { | |
1174 | short length; | |
1175 | unsigned char *buf; | |
1176 | ||
1177 | ARLAN_DEBUG_ENTRY("arlan_tx"); | |
1178 | ||
1179 | length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; | |
1180 | buf = skb->data; | |
1181 | ||
1182 | if (length + 0x12 > 0x800) { | |
1183 | printk(KERN_ERR "TX RING overflow \n"); | |
1184 | netif_stop_queue (dev); | |
1185 | } | |
1186 | ||
1187 | if (arlan_hw_tx(dev, buf, length) == -1) | |
1188 | goto bad_end; | |
1189 | ||
1190 | dev->trans_start = jiffies; | |
1191 | ||
1192 | dev_kfree_skb(skb); | |
1193 | ||
1194 | arlan_process_interrupt(dev); | |
1195 | ARLAN_DEBUG_EXIT("arlan_tx"); | |
6ed10654 | 1196 | return NETDEV_TX_OK; |
1da177e4 LT |
1197 | |
1198 | bad_end: | |
1199 | arlan_process_interrupt(dev); | |
1200 | netif_stop_queue (dev); | |
1201 | ARLAN_DEBUG_EXIT("arlan_tx"); | |
5b548140 | 1202 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1203 | } |
1204 | ||
1205 | ||
1206 | static inline int DoNotReTransmitCrap(struct net_device *dev) | |
1207 | { | |
1208 | struct arlan_private *priv = netdev_priv(dev); | |
1209 | ||
1210 | if (TXLAST(dev).length < priv->Conf->ReTransmitPacketMaxSize) | |
1211 | return 1; | |
1212 | return 0; | |
1213 | ||
1214 | } | |
1215 | ||
1216 | static inline int DoNotWaitReTransmitCrap(struct net_device *dev) | |
1217 | { | |
1218 | struct arlan_private *priv = netdev_priv(dev); | |
1219 | ||
1220 | if (TXLAST(dev).length < priv->Conf->waitReTransmitPacketMaxSize) | |
1221 | return 1; | |
1222 | return 0; | |
1223 | } | |
1224 | ||
1225 | static inline void arlan_queue_retransmit(struct net_device *dev) | |
1226 | { | |
1227 | struct arlan_private *priv = netdev_priv(dev); | |
1228 | ||
1229 | ARLAN_DEBUG_ENTRY("arlan_queue_retransmit"); | |
1230 | ||
1231 | if (DoNotWaitReTransmitCrap(dev)) | |
1232 | { | |
1233 | arlan_drop_tx(dev); | |
1234 | } else | |
1235 | priv->ReTransmitRequested++; | |
1236 | ||
1237 | ARLAN_DEBUG_EXIT("arlan_queue_retransmit"); | |
1238 | } | |
1239 | ||
1240 | static inline void RetryOrFail(struct net_device *dev) | |
1241 | { | |
1242 | struct arlan_private *priv = netdev_priv(dev); | |
1243 | ||
1244 | ARLAN_DEBUG_ENTRY("RetryOrFail"); | |
1245 | ||
1246 | if (priv->retransmissions > priv->Conf->retries || | |
1247 | DoNotReTransmitCrap(dev)) | |
1248 | { | |
1249 | arlan_drop_tx(dev); | |
1250 | } | |
1251 | else if (priv->bad <= priv->Conf->fastReTransCount) | |
1252 | { | |
1253 | arlan_retransmit_now(dev); | |
1254 | } | |
1255 | else arlan_queue_retransmit(dev); | |
1256 | ||
1257 | ARLAN_DEBUG_EXIT("RetryOrFail"); | |
1258 | } | |
1259 | ||
1260 | ||
1261 | static void arlan_tx_done_interrupt(struct net_device *dev, int status) | |
1262 | { | |
1263 | struct arlan_private *priv = netdev_priv(dev); | |
1264 | ||
1265 | ARLAN_DEBUG_ENTRY("arlan_tx_done_interrupt"); | |
1266 | ||
1267 | priv->tx_last_cleared = jiffies; | |
1268 | priv->tx_command_given = 0; | |
1269 | switch (status) | |
1270 | { | |
1271 | case 1: | |
1272 | { | |
1273 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1274 | printk("arlan intr: transmit OK\n"); | |
06a5223d | 1275 | dev->stats.tx_packets++; |
1da177e4 LT |
1276 | priv->bad = 0; |
1277 | priv->reset = 0; | |
1278 | priv->retransmissions = 0; | |
1279 | if (priv->Conf->tx_delay_ms) | |
1280 | { | |
1281 | priv->tx_done_delayed = jiffies + (priv->Conf->tx_delay_ms * HZ) / 1000 + 1; | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | TXLAST(dev).offset = 0; | |
1286 | if (priv->txLast) | |
1287 | priv->txLast = 0; | |
1288 | else if (TXTAIL(dev).offset) | |
1289 | priv->txLast = 1; | |
1290 | if (TXLAST(dev).offset) | |
1291 | { | |
1292 | arlan_retransmit_now(dev); | |
1293 | dev->trans_start = jiffies; | |
1294 | } | |
1295 | if (!TXHEAD(dev).offset || !TXTAIL(dev).offset) | |
1296 | { | |
1297 | netif_wake_queue (dev); | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | break; | |
1302 | ||
1303 | case 2: | |
1304 | { | |
1305 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1306 | printk("arlan intr: transmit timed out\n"); | |
1307 | priv->bad += 1; | |
1308 | //arlan_queue_retransmit(dev); | |
1309 | RetryOrFail(dev); | |
1310 | } | |
1311 | break; | |
1312 | ||
1313 | case 3: | |
1314 | { | |
1315 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1316 | printk("arlan intr: transmit max retries\n"); | |
1317 | priv->bad += 1; | |
1318 | priv->reset = 0; | |
1319 | //arlan_queue_retransmit(dev); | |
1320 | RetryOrFail(dev); | |
1321 | } | |
1322 | break; | |
1323 | ||
1324 | case 4: | |
1325 | { | |
1326 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1327 | printk("arlan intr: transmit aborted\n"); | |
1328 | priv->bad += 1; | |
1329 | arlan_queue_retransmit(dev); | |
1330 | //RetryOrFail(dev); | |
1331 | } | |
1332 | break; | |
1333 | ||
1334 | case 5: | |
1335 | { | |
1336 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1337 | printk("arlan intr: transmit not registered\n"); | |
1338 | priv->bad += 1; | |
1339 | //debug=101; | |
1340 | arlan_queue_retransmit(dev); | |
1341 | } | |
1342 | break; | |
1343 | ||
1344 | case 6: | |
1345 | { | |
1346 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1347 | printk("arlan intr: transmit destination full\n"); | |
1348 | priv->bad += 1; | |
1349 | priv->reset = 0; | |
1350 | //arlan_drop_tx(dev); | |
1351 | arlan_queue_retransmit(dev); | |
1352 | } | |
1353 | break; | |
1354 | ||
1355 | case 7: | |
1356 | { | |
1357 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1358 | printk("arlan intr: transmit unknown ack\n"); | |
1359 | priv->bad += 1; | |
1360 | priv->reset = 0; | |
1361 | arlan_queue_retransmit(dev); | |
1362 | } | |
1363 | break; | |
1364 | ||
1365 | case 8: | |
1366 | { | |
1367 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1368 | printk("arlan intr: transmit dest mail box full\n"); | |
1369 | priv->bad += 1; | |
1370 | priv->reset = 0; | |
1371 | //arlan_drop_tx(dev); | |
1372 | arlan_queue_retransmit(dev); | |
1373 | } | |
1374 | break; | |
1375 | ||
1376 | case 9: | |
1377 | { | |
1378 | IFDEBUG(ARLAN_DEBUG_TX_CHAIN) | |
1379 | printk("arlan intr: transmit root dest not reg.\n"); | |
1380 | priv->bad += 1; | |
1381 | priv->reset = 1; | |
1382 | //arlan_drop_tx(dev); | |
1383 | arlan_queue_retransmit(dev); | |
1384 | } | |
1385 | break; | |
1386 | ||
1387 | default: | |
1388 | { | |
1389 | printk(KERN_ERR "arlan intr: transmit status unknown\n"); | |
1390 | priv->bad += 1; | |
1391 | priv->reset = 1; | |
1392 | arlan_drop_tx(dev); | |
1393 | } | |
1394 | } | |
1395 | ||
1396 | ARLAN_DEBUG_EXIT("arlan_tx_done_interrupt"); | |
1397 | } | |
1398 | ||
1399 | ||
1400 | static void arlan_rx_interrupt(struct net_device *dev, u_char rxStatus, u_short rxOffset, u_short pkt_len) | |
1401 | { | |
1402 | char *skbtmp; | |
1403 | int i = 0; | |
1404 | ||
1405 | struct arlan_private *priv = netdev_priv(dev); | |
1406 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1407 | struct arlan_conf_stru *conf = priv->Conf; | |
1408 | ||
1409 | ||
1410 | ARLAN_DEBUG_ENTRY("arlan_rx_interrupt"); | |
1411 | // by spec, not WRITESHMB(arlan->rxStatus,0x00); | |
1412 | // prohibited here arlan_command(dev, ARLAN_COMMAND_RX); | |
1413 | ||
1414 | if (pkt_len < 10 || pkt_len > 2048) | |
1415 | { | |
1416 | printk(KERN_WARNING "%s: got too short or long packet, len %d \n", dev->name, pkt_len); | |
1417 | return; | |
1418 | } | |
1419 | if (rxOffset + pkt_len > 0x2000) | |
1420 | { | |
1421 | printk("%s: got too long packet, len %d offset %x\n", dev->name, pkt_len, rxOffset); | |
1422 | return; | |
1423 | } | |
1424 | priv->in_bytes += pkt_len; | |
1425 | priv->in_bytes10 += pkt_len; | |
1426 | if (conf->measure_rate < 1) | |
1427 | conf->measure_rate = 1; | |
1428 | if (time_after(jiffies, priv->in_time + conf->measure_rate * HZ)) | |
1429 | { | |
1430 | conf->in_speed = priv->in_bytes / conf->measure_rate; | |
1431 | priv->in_bytes = 0; | |
1432 | priv->in_time = jiffies; | |
1433 | } | |
1434 | if (time_after(jiffies, priv->in_time10 + conf->measure_rate * 10*HZ)) | |
1435 | { | |
1436 | conf->in_speed10 = priv->in_bytes10 / (10 * conf->measure_rate); | |
1437 | priv->in_bytes10 = 0; | |
1438 | priv->in_time10 = jiffies; | |
1439 | } | |
1440 | DEBUGSHM(1, "arlan rcv pkt rxStatus= %d ", arlan->rxStatus, u_char); | |
1441 | switch (rxStatus) | |
1442 | { | |
1443 | case 1: | |
1444 | case 2: | |
1445 | case 3: | |
1446 | { | |
1447 | /* Malloc up new buffer. */ | |
1448 | struct sk_buff *skb; | |
1449 | ||
1450 | DEBUGSHM(50, "arlan recv pkt offs=%d\n", arlan->rxOffset, u_short); | |
1451 | DEBUGSHM(1, "arlan rxFrmType = %d \n", arlan->rxFrmType, u_char); | |
1452 | DEBUGSHM(1, KERN_INFO "arlan rx scrambled = %d \n", arlan->scrambled, u_char); | |
1453 | ||
1454 | /* here we do multicast filtering to avoid slow 8-bit memcopy */ | |
1455 | #ifdef ARLAN_MULTICAST | |
1456 | if (!(dev->flags & IFF_ALLMULTI) && | |
1457 | !(dev->flags & IFF_PROMISC) && | |
1458 | dev->mc_list) | |
1459 | { | |
1460 | char hw_dst_addr[6]; | |
1461 | struct dev_mc_list *dmi = dev->mc_list; | |
1462 | int i; | |
1463 | ||
1464 | memcpy_fromio(hw_dst_addr, arlan->ultimateDestAddress, 6); | |
1465 | if (hw_dst_addr[0] == 0x01) | |
1466 | { | |
1467 | if (mdebug) | |
1468 | if (hw_dst_addr[1] == 0x00) | |
1469 | printk(KERN_ERR "%s mcast 0x0100 \n", dev->name); | |
1470 | else if (hw_dst_addr[1] == 0x40) | |
1471 | printk(KERN_ERR "%s m/bcast 0x0140 \n", dev->name); | |
1472 | while (dmi) | |
e174961c JB |
1473 | { |
1474 | if (dmi->dmi_addrlen == 6) { | |
1da177e4 | 1475 | if (arlan_debug & ARLAN_DEBUG_HEADER_DUMP) |
e174961c JB |
1476 | printk(KERN_ERR "%s mcl %pM\n", |
1477 | dev->name, dmi->dmi_addr); | |
1da177e4 LT |
1478 | for (i = 0; i < 6; i++) |
1479 | if (dmi->dmi_addr[i] != hw_dst_addr[i]) | |
1480 | break; | |
1481 | if (i == 6) | |
1482 | break; | |
e174961c | 1483 | } else |
1da177e4 LT |
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); | |
06a5223d | 1500 | dev->stats.rx_dropped++; |
1da177e4 LT |
1501 | break; |
1502 | } | |
1503 | skb_reserve(skb, 2); | |
1da177e4 LT |
1504 | skbtmp = skb_put(skb, pkt_len); |
1505 | ||
1506 | memcpy_fromio(skbtmp + ARLAN_FAKE_HDR_LEN, ((char __iomem *) arlan) + rxOffset, pkt_len - ARLAN_FAKE_HDR_LEN); | |
1507 | memcpy_fromio(skbtmp, arlan->ultimateDestAddress, 6); | |
1508 | memcpy_fromio(skbtmp + 6, arlan->rxSrc, 6); | |
1509 | WRITESHMB(arlan->rxStatus, 0x00); | |
1510 | arlan_command(dev, ARLAN_COMMAND_RX); | |
1511 | ||
1512 | IFDEBUG(ARLAN_DEBUG_HEADER_DUMP) | |
1513 | { | |
1514 | char immedDestAddress[6]; | |
1515 | char immedSrcAddress[6]; | |
1516 | memcpy_fromio(immedDestAddress, arlan->immedDestAddress, 6); | |
1517 | memcpy_fromio(immedSrcAddress, arlan->immedSrcAddress, 6); | |
1518 | ||
e174961c JB |
1519 | printk(KERN_WARNING "%s t %pM f %pM imd %pM ims %pM\n", |
1520 | dev->name, skbtmp, | |
1521 | &skbtmp[6], | |
1522 | immedDestAddress, | |
1523 | immedSrcAddress); | |
1da177e4 LT |
1524 | } |
1525 | skb->protocol = eth_type_trans(skb, dev); | |
1526 | IFDEBUG(ARLAN_DEBUG_HEADER_DUMP) | |
1527 | if (skb->protocol != 0x608 && skb->protocol != 0x8) | |
1528 | { | |
1529 | for (i = 0; i <= 22; i++) | |
1530 | printk("%02x:", (u_char) skbtmp[i + 12]); | |
1531 | printk(KERN_ERR "\n"); | |
1532 | printk(KERN_WARNING "arlan kernel pkt type trans %x \n", skb->protocol); | |
1533 | } | |
1534 | netif_rx(skb); | |
06a5223d PZ |
1535 | dev->stats.rx_packets++; |
1536 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1537 | } |
1538 | break; | |
1539 | ||
1540 | default: | |
1541 | printk(KERN_ERR "arlan intr: received unknown status\n"); | |
06a5223d | 1542 | dev->stats.rx_crc_errors++; |
1da177e4 LT |
1543 | break; |
1544 | } | |
1545 | ARLAN_DEBUG_EXIT("arlan_rx_interrupt"); | |
1546 | } | |
1547 | ||
1548 | static void arlan_process_interrupt(struct net_device *dev) | |
1549 | { | |
1550 | struct arlan_private *priv = netdev_priv(dev); | |
1551 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1552 | u_char rxStatus = READSHMB(arlan->rxStatus); | |
1553 | u_char txStatus = READSHMB(arlan->txStatus); | |
1554 | u_short rxOffset = READSHMS(arlan->rxOffset); | |
1555 | u_short pkt_len = READSHMS(arlan->rxLength); | |
1556 | int interrupt_count = 0; | |
1557 | ||
1558 | ARLAN_DEBUG_ENTRY("arlan_process_interrupt"); | |
1559 | ||
1560 | if (test_and_set_bit(0, (void *) &priv->interrupt_processing_active)) | |
1561 | { | |
1562 | if (arlan_debug & ARLAN_DEBUG_CHAIN_LOCKS) | |
1563 | printk(KERN_ERR "interrupt chain reentering \n"); | |
1564 | goto end_int_process; | |
1565 | } | |
1566 | while ((rxStatus || txStatus || priv->interrupt_ack_requested) | |
1567 | && (interrupt_count < 5)) | |
1568 | { | |
1569 | if (rxStatus) | |
1570 | priv->last_rx_int_ack_time = jiffies; | |
1571 | ||
1572 | arlan_command(dev, ARLAN_COMMAND_INT_ACK); | |
1573 | arlan_command(dev, ARLAN_COMMAND_INT_ENABLE); | |
1574 | ||
1575 | IFDEBUG(ARLAN_DEBUG_INTERRUPT) | |
1576 | printk(KERN_ERR "%s: got IRQ rx %x tx %x comm %x rxOff %x rxLen %x \n", | |
1577 | dev->name, rxStatus, txStatus, READSHMB(arlan->commandByte), | |
1578 | rxOffset, pkt_len); | |
1579 | ||
1580 | if (rxStatus == 0 && txStatus == 0) | |
1581 | { | |
1582 | if (priv->irq_test_done) | |
1583 | { | |
1584 | if (!registrationBad(dev)) | |
1585 | IFDEBUG(ARLAN_DEBUG_INTERRUPT) printk(KERN_ERR "%s unknown interrupt(nop? regLost ?) reason tx %d rx %d ", | |
1586 | dev->name, txStatus, rxStatus); | |
1587 | } else { | |
1588 | IFDEBUG(ARLAN_DEBUG_INTERRUPT) | |
1589 | printk(KERN_INFO "%s irq $%d test OK \n", dev->name, dev->irq); | |
1590 | ||
1591 | } | |
1592 | priv->interrupt_ack_requested = 0; | |
1593 | goto ends; | |
1594 | } | |
1595 | if (txStatus != 0) | |
1596 | { | |
1597 | WRITESHMB(arlan->txStatus, 0x00); | |
1598 | arlan_tx_done_interrupt(dev, txStatus); | |
1599 | goto ends; | |
1600 | } | |
1601 | if (rxStatus == 1 || rxStatus == 2) | |
1602 | { /* a packet waiting */ | |
1603 | arlan_rx_interrupt(dev, rxStatus, rxOffset, pkt_len); | |
1604 | goto ends; | |
1605 | } | |
1606 | if (rxStatus > 2 && rxStatus < 0xff) | |
1607 | { | |
1608 | WRITESHMB(arlan->rxStatus, 0x00); | |
1609 | printk(KERN_ERR "%s unknown rxStatus reason tx %d rx %d ", | |
1610 | dev->name, txStatus, rxStatus); | |
1611 | goto ends; | |
1612 | } | |
1613 | if (rxStatus == 0xff) | |
1614 | { | |
1615 | WRITESHMB(arlan->rxStatus, 0x00); | |
1616 | arlan_command(dev, ARLAN_COMMAND_RX); | |
1617 | if (registrationBad(dev)) | |
1618 | netif_device_detach(dev); | |
1619 | if (!registrationBad(dev)) | |
1620 | { | |
1621 | priv->registrationLastSeen = jiffies; | |
1622 | if (!netif_queue_stopped(dev) && !priv->under_reset && !priv->under_config) | |
1623 | netif_wake_queue (dev); | |
1624 | } | |
1625 | goto ends; | |
1626 | } | |
1627 | ends: | |
1628 | ||
1629 | arlan_command_process(dev); | |
1630 | ||
1631 | rxStatus = READSHMB(arlan->rxStatus); | |
1632 | txStatus = READSHMB(arlan->txStatus); | |
1633 | rxOffset = READSHMS(arlan->rxOffset); | |
1634 | pkt_len = READSHMS(arlan->rxLength); | |
1635 | ||
1636 | ||
1637 | priv->irq_test_done = 1; | |
1638 | ||
1639 | interrupt_count++; | |
1640 | } | |
1641 | priv->interrupt_processing_active = 0; | |
1642 | ||
1643 | end_int_process: | |
1644 | arlan_command_process(dev); | |
1645 | ||
1646 | ARLAN_DEBUG_EXIT("arlan_process_interrupt"); | |
1647 | return; | |
1648 | } | |
1649 | ||
7d12e780 | 1650 | static irqreturn_t arlan_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1651 | { |
1652 | struct net_device *dev = dev_id; | |
1653 | struct arlan_private *priv = netdev_priv(dev); | |
1654 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1655 | u_char rxStatus = READSHMB(arlan->rxStatus); | |
1656 | u_char txStatus = READSHMB(arlan->txStatus); | |
1657 | ||
1658 | ARLAN_DEBUG_ENTRY("arlan_interrupt"); | |
1659 | ||
1660 | ||
1661 | if (!rxStatus && !txStatus) | |
1662 | priv->interrupt_ack_requested++; | |
1663 | ||
1664 | arlan_process_interrupt(dev); | |
1665 | ||
1666 | priv->irq_test_done = 1; | |
1667 | ||
1668 | ARLAN_DEBUG_EXIT("arlan_interrupt"); | |
1669 | return IRQ_HANDLED; | |
1670 | ||
1671 | } | |
1672 | ||
1673 | ||
1674 | static int arlan_close(struct net_device *dev) | |
1675 | { | |
1676 | struct arlan_private *priv = netdev_priv(dev); | |
1677 | ||
1678 | ARLAN_DEBUG_ENTRY("arlan_close"); | |
1679 | ||
1680 | del_timer_sync(&priv->timer); | |
1681 | ||
1682 | arlan_command(dev, ARLAN_COMMAND_POWERDOWN); | |
1683 | ||
1684 | IFDEBUG(ARLAN_DEBUG_STARTUP) | |
1685 | printk(KERN_NOTICE "%s: Closing device\n", dev->name); | |
1686 | ||
1687 | netif_stop_queue(dev); | |
1688 | free_irq(dev->irq, dev); | |
1689 | ||
1690 | ARLAN_DEBUG_EXIT("arlan_close"); | |
1691 | return 0; | |
1692 | } | |
1693 | ||
1694 | #ifdef ARLAN_DEBUGGING | |
1695 | static long alignLong(volatile u_char * ptr) | |
1696 | { | |
1697 | long ret; | |
1698 | memcpy_fromio(&ret, (void *) ptr, 4); | |
1699 | return ret; | |
1700 | } | |
1701 | #endif | |
1702 | ||
1703 | /* | |
1704 | * Get the current statistics. | |
1705 | * This may be called with the card open or closed. | |
1706 | */ | |
1707 | ||
1708 | static struct net_device_stats *arlan_statistics(struct net_device *dev) | |
1709 | { | |
1710 | struct arlan_private *priv = netdev_priv(dev); | |
1711 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1712 | ||
1713 | ||
1714 | ARLAN_DEBUG_ENTRY("arlan_statistics"); | |
1715 | ||
1716 | /* Update the statistics from the device registers. */ | |
1717 | ||
06a5223d PZ |
1718 | READSHM(dev->stats.collisions, arlan->numReTransmissions, u_int); |
1719 | READSHM(dev->stats.rx_crc_errors, arlan->numCRCErrors, u_int); | |
1720 | READSHM(dev->stats.rx_dropped, arlan->numFramesDiscarded, u_int); | |
1721 | READSHM(dev->stats.rx_fifo_errors, arlan->numRXBufferOverflows, u_int); | |
1722 | READSHM(dev->stats.rx_frame_errors, arlan->numReceiveFramesLost, u_int); | |
1723 | READSHM(dev->stats.rx_over_errors, arlan->numRXOverruns, u_int); | |
1724 | READSHM(dev->stats.rx_packets, arlan->numDatagramsReceived, u_int); | |
1725 | READSHM(dev->stats.tx_aborted_errors, arlan->numAbortErrors, u_int); | |
1726 | READSHM(dev->stats.tx_carrier_errors, arlan->numStatusTimeouts, u_int); | |
1727 | READSHM(dev->stats.tx_dropped, arlan->numDatagramsDiscarded, u_int); | |
1728 | READSHM(dev->stats.tx_fifo_errors, arlan->numTXUnderruns, u_int); | |
1729 | READSHM(dev->stats.tx_packets, arlan->numDatagramsTransmitted, u_int); | |
1730 | READSHM(dev->stats.tx_window_errors, arlan->numHoldOffs, u_int); | |
1da177e4 LT |
1731 | |
1732 | ARLAN_DEBUG_EXIT("arlan_statistics"); | |
1733 | ||
06a5223d | 1734 | return &dev->stats; |
1da177e4 LT |
1735 | } |
1736 | ||
1737 | ||
1738 | static void arlan_set_multicast(struct net_device *dev) | |
1739 | { | |
1740 | struct arlan_private *priv = netdev_priv(dev); | |
1741 | volatile struct arlan_shmem __iomem *arlan = priv->card; | |
1742 | struct arlan_conf_stru *conf = priv->Conf; | |
1743 | int board_conf_needed = 0; | |
1744 | ||
1745 | ||
1746 | ARLAN_DEBUG_ENTRY("arlan_set_multicast"); | |
1747 | ||
1748 | if (dev->flags & IFF_PROMISC) | |
1749 | { | |
1750 | unsigned char recMode; | |
1751 | READSHM(recMode, arlan->receiveMode, u_char); | |
1752 | conf->receiveMode = (ARLAN_RCV_PROMISC | ARLAN_RCV_CONTROL); | |
1753 | if (conf->receiveMode != recMode) | |
1754 | board_conf_needed = 1; | |
1755 | } | |
1756 | else | |
1757 | { | |
1758 | /* turn off promiscuous mode */ | |
1759 | unsigned char recMode; | |
1760 | READSHM(recMode, arlan->receiveMode, u_char); | |
1761 | conf->receiveMode = ARLAN_RCV_CLEAN | ARLAN_RCV_CONTROL; | |
1762 | if (conf->receiveMode != recMode) | |
1763 | board_conf_needed = 1; | |
1764 | } | |
1765 | if (board_conf_needed) | |
1766 | arlan_command(dev, ARLAN_COMMAND_CONF); | |
1767 | ||
1768 | ARLAN_DEBUG_EXIT("arlan_set_multicast"); | |
1769 | } | |
1770 | ||
1771 | ||
1772 | struct net_device * __init arlan_probe(int unit) | |
1773 | { | |
1774 | struct net_device *dev; | |
1775 | int err; | |
1776 | int m; | |
1777 | ||
1778 | ARLAN_DEBUG_ENTRY("arlan_probe"); | |
1779 | ||
1780 | if (arlans_found == MAX_ARLANS) | |
1781 | return ERR_PTR(-ENODEV); | |
1782 | ||
1783 | /* | |
1784 | * Reserve space for local data and a copy of the shared memory | |
1785 | * that is used by the /proc interface. | |
1786 | */ | |
1787 | dev = alloc_etherdev(sizeof(struct arlan_private) | |
1788 | + sizeof(struct arlan_shmem)); | |
1789 | if (!dev) | |
1790 | return ERR_PTR(-ENOMEM); | |
1791 | ||
1da177e4 LT |
1792 | if (unit >= 0) { |
1793 | sprintf(dev->name, "eth%d", unit); | |
1794 | netdev_boot_setup_check(dev); | |
1795 | ||
1796 | if (dev->mem_start) { | |
1797 | if (arlan_probe_here(dev, dev->mem_start) == 0) | |
1798 | goto found; | |
1799 | goto not_found; | |
1800 | } | |
1801 | ||
1802 | } | |
1803 | ||
1804 | ||
1805 | for (m = (int)phys_to_virt(lastFoundAt) + ARLAN_SHMEM_SIZE; | |
1806 | m <= (int)phys_to_virt(0xDE000); | |
1807 | m += ARLAN_SHMEM_SIZE) | |
1808 | { | |
1809 | if (arlan_probe_here(dev, m) == 0) | |
1810 | { | |
1811 | lastFoundAt = (int)virt_to_phys((void*)m); | |
1812 | goto found; | |
1813 | } | |
1814 | } | |
1815 | ||
1816 | if (lastFoundAt == 0xbe000) | |
1817 | printk(KERN_ERR "arlan: No Arlan devices found \n"); | |
1818 | ||
1819 | not_found: | |
1820 | free_netdev(dev); | |
1821 | return ERR_PTR(-ENODEV); | |
1822 | ||
1823 | found: | |
1824 | err = arlan_setup_device(dev, arlans_found); | |
1825 | if (err) | |
1826 | dev = ERR_PTR(err); | |
1827 | else if (!arlans_found++) | |
1828 | printk(KERN_INFO "Arlan driver %s\n", arlan_version); | |
1829 | ||
1830 | return dev; | |
1831 | } | |
1832 | ||
1833 | #ifdef MODULE | |
4541a5db | 1834 | int __init init_module(void) |
1da177e4 LT |
1835 | { |
1836 | int i = 0; | |
1837 | ||
1838 | ARLAN_DEBUG_ENTRY("init_module"); | |
1839 | ||
1840 | if (channelSet != channelSetUNKNOWN || channelNumber != channelNumberUNKNOWN || systemId != systemIdUNKNOWN) | |
1841 | return -EINVAL; | |
1842 | ||
1843 | for (i = 0; i < MAX_ARLANS; i++) { | |
1844 | struct net_device *dev = arlan_probe(i); | |
1845 | ||
1846 | if (IS_ERR(dev)) | |
1847 | return PTR_ERR(dev); | |
1848 | } | |
1849 | init_arlan_proc(); | |
1850 | printk(KERN_INFO "Arlan driver %s\n", arlan_version); | |
1851 | ARLAN_DEBUG_EXIT("init_module"); | |
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | ||
4541a5db | 1856 | void __exit cleanup_module(void) |
1da177e4 LT |
1857 | { |
1858 | int i = 0; | |
1859 | struct net_device *dev; | |
1860 | ||
1861 | ARLAN_DEBUG_ENTRY("cleanup_module"); | |
1862 | ||
1863 | IFDEBUG(ARLAN_DEBUG_SHUTDOWN) | |
1864 | printk(KERN_INFO "arlan: unloading module\n"); | |
1865 | ||
1866 | cleanup_arlan_proc(); | |
1867 | ||
1868 | for (i = 0; i < MAX_ARLANS; i++) | |
1869 | { | |
1870 | dev = arlan_device[i]; | |
1871 | if (dev) { | |
1872 | arlan_command(dev, ARLAN_COMMAND_POWERDOWN ); | |
1873 | ||
1874 | unregister_netdev(dev); | |
1875 | release_mem_region(virt_to_phys((void *) dev->mem_start), | |
1876 | ARLAN_SHMEM_SIZE); | |
1877 | free_netdev(dev); | |
1878 | arlan_device[i] = NULL; | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | ARLAN_DEBUG_EXIT("cleanup_module"); | |
1883 | } | |
1884 | ||
1885 | ||
1886 | #endif | |
1887 | MODULE_LICENSE("GPL"); |