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x86: fix bootup crash in native_read_tsc()
[wrt350n-kernel.git] / drivers / net / wireless / libertas / cmdresp.c
blob159216a91903d14e5f5ec5df62321d302f72b504
1 /**
2 * This file contains the handling of command
3 * responses as well as events generated by firmware.
4 */
5 #include <linux/delay.h>
6 #include <linux/if_arp.h>
7 #include <linux/netdevice.h>
8
9 #include <net/iw_handler.h>
10
11 #include "host.h"
12 #include "decl.h"
13 #include "defs.h"
14 #include "dev.h"
15 #include "join.h"
16 #include "wext.h"
17
18 /**
19 * @brief This function handles disconnect event. it
20 * reports disconnect to upper layer, clean tx/rx packets,
21 * reset link state etc.
22 *
23 * @param priv A pointer to struct lbs_private structure
24 * @return n/a
25 */
26 void lbs_mac_event_disconnected(struct lbs_private *priv)
27 {
28 union iwreq_data wrqu;
29
30 if (priv->connect_status != LBS_CONNECTED)
31 return;
32
33 lbs_deb_enter(LBS_DEB_ASSOC);
34
35 memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
36 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
37
38 /*
39 * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
40 * It causes problem in the Supplicant
41 */
42
43 msleep_interruptible(1000);
44 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
45
46 /* report disconnect to upper layer */
47 netif_stop_queue(priv->dev);
48 netif_carrier_off(priv->dev);
49
50 /* Free Tx and Rx packets */
51 kfree_skb(priv->currenttxskb);
52 priv->currenttxskb = NULL;
53 priv->tx_pending_len = 0;
54
55 /* reset SNR/NF/RSSI values */
56 memset(priv->SNR, 0x00, sizeof(priv->SNR));
57 memset(priv->NF, 0x00, sizeof(priv->NF));
58 memset(priv->RSSI, 0x00, sizeof(priv->RSSI));
59 memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
60 memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
61 priv->nextSNRNF = 0;
62 priv->numSNRNF = 0;
63 priv->connect_status = LBS_DISCONNECTED;
64
65 /* Clear out associated SSID and BSSID since connection is
66 * no longer valid.
67 */
68 memset(&priv->curbssparams.bssid, 0, ETH_ALEN);
69 memset(&priv->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
70 priv->curbssparams.ssid_len = 0;
71
72 if (priv->psstate != PS_STATE_FULL_POWER) {
73 /* make firmware to exit PS mode */
74 lbs_deb_cmd("disconnected, so exit PS mode\n");
75 lbs_ps_wakeup(priv, 0);
76 }
77 lbs_deb_leave(LBS_DEB_CMD);
78 }
79
80 /**
81 * @brief This function handles MIC failure event.
82 *
83 * @param priv A pointer to struct lbs_private structure
84 * @para event the event id
85 * @return n/a
86 */
87 static void handle_mic_failureevent(struct lbs_private *priv, u32 event)
88 {
89 char buf[50];
90
91 lbs_deb_enter(LBS_DEB_CMD);
92 memset(buf, 0, sizeof(buf));
93
94 sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");
95
96 if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
97 strcat(buf, "unicast ");
98 } else {
99 strcat(buf, "multicast ");
100 }
101
102 lbs_send_iwevcustom_event(priv, buf);
103 lbs_deb_leave(LBS_DEB_CMD);
104 }
105
106 static int lbs_ret_reg_access(struct lbs_private *priv,
107 u16 type, struct cmd_ds_command *resp)
108 {
109 int ret = 0;
110
111 lbs_deb_enter(LBS_DEB_CMD);
112
113 switch (type) {
114 case CMD_RET(CMD_MAC_REG_ACCESS):
115 {
116 struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
117
118 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
119 priv->offsetvalue.value = le32_to_cpu(reg->value);
120 break;
121 }
122
123 case CMD_RET(CMD_BBP_REG_ACCESS):
124 {
125 struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
126
127 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
128 priv->offsetvalue.value = reg->value;
129 break;
130 }
131
132 case CMD_RET(CMD_RF_REG_ACCESS):
133 {
134 struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
135
136 priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
137 priv->offsetvalue.value = reg->value;
138 break;
139 }
140
141 default:
142 ret = -1;
143 }
144
145 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
146 return ret;
147 }
148
149 static int lbs_ret_802_11_stat(struct lbs_private *priv,
150 struct cmd_ds_command *resp)
151 {
152 lbs_deb_enter(LBS_DEB_CMD);
153 /* currently priv->wlan802_11Stat is unused
154
155 struct cmd_ds_802_11_get_stat *p11Stat = &resp->params.gstat;
156
157 // TODO Convert it to Big endian befor copy
158 memcpy(&priv->wlan802_11Stat,
159 p11Stat, sizeof(struct cmd_ds_802_11_get_stat));
160 */
161 lbs_deb_leave(LBS_DEB_CMD);
162 return 0;
163 }
164
165 static int lbs_ret_802_11_snmp_mib(struct lbs_private *priv,
166 struct cmd_ds_command *resp)
167 {
168 struct cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
169 u16 oid = le16_to_cpu(smib->oid);
170 u16 querytype = le16_to_cpu(smib->querytype);
171
172 lbs_deb_enter(LBS_DEB_CMD);
173
174 lbs_deb_cmd("SNMP_RESP: oid 0x%x, querytype 0x%x\n", oid,
175 querytype);
176 lbs_deb_cmd("SNMP_RESP: Buf size %d\n", le16_to_cpu(smib->bufsize));
177
178 if (querytype == CMD_ACT_GET) {
179 switch (oid) {
180 case FRAGTHRESH_I:
181 priv->fragthsd =
182 le16_to_cpu(*((__le16 *)(smib->value)));
183 lbs_deb_cmd("SNMP_RESP: frag threshold %u\n",
184 priv->fragthsd);
185 break;
186 case RTSTHRESH_I:
187 priv->rtsthsd =
188 le16_to_cpu(*((__le16 *)(smib->value)));
189 lbs_deb_cmd("SNMP_RESP: rts threshold %u\n",
190 priv->rtsthsd);
191 break;
192 case SHORT_RETRYLIM_I:
193 priv->txretrycount =
194 le16_to_cpu(*((__le16 *)(smib->value)));
195 lbs_deb_cmd("SNMP_RESP: tx retry count %u\n",
196 priv->rtsthsd);
197 break;
198 default:
199 break;
200 }
201 }
202
203 lbs_deb_enter(LBS_DEB_CMD);
204 return 0;
205 }
206
207 static int lbs_ret_802_11_key_material(struct lbs_private *priv,
208 struct cmd_ds_command *resp)
209 {
210 struct cmd_ds_802_11_key_material *pkeymaterial =
211 &resp->params.keymaterial;
212 u16 action = le16_to_cpu(pkeymaterial->action);
213
214 lbs_deb_enter(LBS_DEB_CMD);
215
216 /* Copy the returned key to driver private data */
217 if (action == CMD_ACT_GET) {
218 u8 * buf_ptr = (u8 *) &pkeymaterial->keyParamSet;
219 u8 * resp_end = (u8 *) (resp + le16_to_cpu(resp->size));
220
221 while (buf_ptr < resp_end) {
222 struct MrvlIEtype_keyParamSet * pkeyparamset =
223 (struct MrvlIEtype_keyParamSet *) buf_ptr;
224 struct enc_key * pkey;
225 u16 param_set_len = le16_to_cpu(pkeyparamset->length);
226 u16 key_len = le16_to_cpu(pkeyparamset->keylen);
227 u16 key_flags = le16_to_cpu(pkeyparamset->keyinfo);
228 u16 key_type = le16_to_cpu(pkeyparamset->keytypeid);
229 u8 * end;
230
231 end = (u8 *) pkeyparamset + sizeof (pkeyparamset->type)
232 + sizeof (pkeyparamset->length)
233 + param_set_len;
234 /* Make sure we don't access past the end of the IEs */
235 if (end > resp_end)
236 break;
237
238 if (key_flags & KEY_INFO_WPA_UNICAST)
239 pkey = &priv->wpa_unicast_key;
240 else if (key_flags & KEY_INFO_WPA_MCAST)
241 pkey = &priv->wpa_mcast_key;
242 else
243 break;
244
245 /* Copy returned key into driver */
246 memset(pkey, 0, sizeof(struct enc_key));
247 if (key_len > sizeof(pkey->key))
248 break;
249 pkey->type = key_type;
250 pkey->flags = key_flags;
251 pkey->len = key_len;
252 memcpy(pkey->key, pkeyparamset->key, pkey->len);
253
254 buf_ptr = end + 1;
255 }
256 }
257
258 lbs_deb_enter(LBS_DEB_CMD);
259 return 0;
260 }
261
262 static int lbs_ret_802_11_mac_address(struct lbs_private *priv,
263 struct cmd_ds_command *resp)
264 {
265 struct cmd_ds_802_11_mac_address *macadd = &resp->params.macadd;
266
267 lbs_deb_enter(LBS_DEB_CMD);
268
269 memcpy(priv->current_addr, macadd->macadd, ETH_ALEN);
270
271 lbs_deb_enter(LBS_DEB_CMD);
272 return 0;
273 }
274
275 static int lbs_ret_802_11_rf_tx_power(struct lbs_private *priv,
276 struct cmd_ds_command *resp)
277 {
278 struct cmd_ds_802_11_rf_tx_power *rtp = &resp->params.txp;
279
280 lbs_deb_enter(LBS_DEB_CMD);
281
282 priv->txpowerlevel = le16_to_cpu(rtp->currentlevel);
283
284 lbs_deb_cmd("TX power currently %d\n", priv->txpowerlevel);
285
286 lbs_deb_leave(LBS_DEB_CMD);
287 return 0;
288 }
289
290 static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv,
291 struct cmd_ds_command *resp)
292 {
293 struct cmd_ds_802_11_rate_adapt_rateset *rates = &resp->params.rateset;
294
295 lbs_deb_enter(LBS_DEB_CMD);
296
297 if (rates->action == CMD_ACT_GET) {
298 priv->enablehwauto = le16_to_cpu(rates->enablehwauto);
299 priv->ratebitmap = le16_to_cpu(rates->bitmap);
300 }
301
302 lbs_deb_leave(LBS_DEB_CMD);
303 return 0;
304 }
305
306 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
307 struct cmd_ds_command *resp)
308 {
309 struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
310
311 lbs_deb_enter(LBS_DEB_CMD);
312
313 /* store the non average value */
314 priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
315 priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
316
317 priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
318 priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
319
320 priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
321 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
322 priv->NF[TYPE_BEACON][TYPE_NOAVG]);
323
324 priv->RSSI[TYPE_BEACON][TYPE_AVG] =
325 CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
326 priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
327
328 lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
329 priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
330 priv->RSSI[TYPE_BEACON][TYPE_AVG]);
331
332 lbs_deb_leave(LBS_DEB_CMD);
333 return 0;
334 }
335
336 static int lbs_ret_802_11_eeprom_access(struct lbs_private *priv,
337 struct cmd_ds_command *resp)
338 {
339 struct lbs_ioctl_regrdwr *pbuf;
340 pbuf = (struct lbs_ioctl_regrdwr *) priv->prdeeprom;
341
342 lbs_deb_enter_args(LBS_DEB_CMD, "len %d",
343 le16_to_cpu(resp->params.rdeeprom.bytecount));
344 if (pbuf->NOB < le16_to_cpu(resp->params.rdeeprom.bytecount)) {
345 pbuf->NOB = 0;
346 lbs_deb_cmd("EEPROM read length too big\n");
347 return -1;
348 }
349 pbuf->NOB = le16_to_cpu(resp->params.rdeeprom.bytecount);
350 if (pbuf->NOB > 0) {
351
352 memcpy(&pbuf->value, (u8 *) & resp->params.rdeeprom.value,
353 le16_to_cpu(resp->params.rdeeprom.bytecount));
354 lbs_deb_hex(LBS_DEB_CMD, "EEPROM", (char *)&pbuf->value,
355 le16_to_cpu(resp->params.rdeeprom.bytecount));
356 }
357 lbs_deb_leave(LBS_DEB_CMD);
358 return 0;
359 }
360
361 static int lbs_ret_get_log(struct lbs_private *priv,
362 struct cmd_ds_command *resp)
363 {
364 struct cmd_ds_802_11_get_log *logmessage = &resp->params.glog;
365
366 lbs_deb_enter(LBS_DEB_CMD);
367
368 /* Stored little-endian */
369 memcpy(&priv->logmsg, logmessage, sizeof(struct cmd_ds_802_11_get_log));
370
371 lbs_deb_leave(LBS_DEB_CMD);
372 return 0;
373 }
374
375 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
376 struct cmd_ds_command *resp)
377 {
378 struct cmd_ds_802_11_beacon_control *bcn_ctrl =
379 &resp->params.bcn_ctrl;
380
381 lbs_deb_enter(LBS_DEB_CMD);
382
383 if (bcn_ctrl->action == CMD_ACT_GET) {
384 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
385 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
386 }
387
388 lbs_deb_enter(LBS_DEB_CMD);
389 return 0;
390 }
391
392 static inline int handle_cmd_response(struct lbs_private *priv,
393 unsigned long dummy,
394 struct cmd_header *cmd_response)
395 {
396 struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
397 int ret = 0;
398 unsigned long flags;
399 uint16_t respcmd = le16_to_cpu(resp->command);
400
401 lbs_deb_enter(LBS_DEB_HOST);
402
403 switch (respcmd) {
404 case CMD_RET(CMD_MAC_REG_ACCESS):
405 case CMD_RET(CMD_BBP_REG_ACCESS):
406 case CMD_RET(CMD_RF_REG_ACCESS):
407 ret = lbs_ret_reg_access(priv, respcmd, resp);
408 break;
409
410 case CMD_RET(CMD_802_11_SCAN):
411 ret = lbs_ret_80211_scan(priv, resp);
412 break;
413
414 case CMD_RET(CMD_802_11_GET_LOG):
415 ret = lbs_ret_get_log(priv, resp);
416 break;
417
418 case CMD_RET_802_11_ASSOCIATE:
419 case CMD_RET(CMD_802_11_ASSOCIATE):
420 case CMD_RET(CMD_802_11_REASSOCIATE):
421 ret = lbs_ret_80211_associate(priv, resp);
422 break;
423
424 case CMD_RET(CMD_802_11_DISASSOCIATE):
425 case CMD_RET(CMD_802_11_DEAUTHENTICATE):
426 ret = lbs_ret_80211_disassociate(priv, resp);
427 break;
428
429 case CMD_RET(CMD_802_11_AD_HOC_START):
430 case CMD_RET(CMD_802_11_AD_HOC_JOIN):
431 ret = lbs_ret_80211_ad_hoc_start(priv, resp);
432 break;
433
434 case CMD_RET(CMD_802_11_GET_STAT):
435 ret = lbs_ret_802_11_stat(priv, resp);
436 break;
437
438 case CMD_RET(CMD_802_11_SNMP_MIB):
439 ret = lbs_ret_802_11_snmp_mib(priv, resp);
440 break;
441
442 case CMD_RET(CMD_802_11_RF_TX_POWER):
443 ret = lbs_ret_802_11_rf_tx_power(priv, resp);
444 break;
445
446 case CMD_RET(CMD_802_11_SET_AFC):
447 case CMD_RET(CMD_802_11_GET_AFC):
448 spin_lock_irqsave(&priv->driver_lock, flags);
449 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
450 sizeof(struct cmd_ds_802_11_afc));
451 spin_unlock_irqrestore(&priv->driver_lock, flags);
452
453 break;
454
455 case CMD_RET(CMD_MAC_MULTICAST_ADR):
456 case CMD_RET(CMD_MAC_CONTROL):
457 case CMD_RET(CMD_802_11_RESET):
458 case CMD_RET(CMD_802_11_AUTHENTICATE):
459 case CMD_RET(CMD_802_11_BEACON_STOP):
460 break;
461
462 case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET):
463 ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp);
464 break;
465
466 case CMD_RET(CMD_802_11_RSSI):
467 ret = lbs_ret_802_11_rssi(priv, resp);
468 break;
469
470 case CMD_RET(CMD_802_11_MAC_ADDRESS):
471 ret = lbs_ret_802_11_mac_address(priv, resp);
472 break;
473
474 case CMD_RET(CMD_802_11_AD_HOC_STOP):
475 ret = lbs_ret_80211_ad_hoc_stop(priv, resp);
476 break;
477
478 case CMD_RET(CMD_802_11_KEY_MATERIAL):
479 ret = lbs_ret_802_11_key_material(priv, resp);
480 break;
481
482 case CMD_RET(CMD_802_11_EEPROM_ACCESS):
483 ret = lbs_ret_802_11_eeprom_access(priv, resp);
484 break;
485
486 case CMD_RET(CMD_802_11D_DOMAIN_INFO):
487 ret = lbs_ret_802_11d_domain_info(priv, resp);
488 break;
489
490 case CMD_RET(CMD_802_11_TPC_CFG):
491 spin_lock_irqsave(&priv->driver_lock, flags);
492 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
493 sizeof(struct cmd_ds_802_11_tpc_cfg));
494 spin_unlock_irqrestore(&priv->driver_lock, flags);
495 break;
496 case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
497 spin_lock_irqsave(&priv->driver_lock, flags);
498 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
499 sizeof(struct cmd_ds_802_11_led_ctrl));
500 spin_unlock_irqrestore(&priv->driver_lock, flags);
501 break;
502
503 case CMD_RET(CMD_802_11_PWR_CFG):
504 spin_lock_irqsave(&priv->driver_lock, flags);
505 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.pwrcfg,
506 sizeof(struct cmd_ds_802_11_pwr_cfg));
507 spin_unlock_irqrestore(&priv->driver_lock, flags);
508
509 break;
510
511 case CMD_RET(CMD_GET_TSF):
512 spin_lock_irqsave(&priv->driver_lock, flags);
513 memcpy((void *)priv->cur_cmd->callback_arg,
514 &resp->params.gettsf.tsfvalue, sizeof(u64));
515 spin_unlock_irqrestore(&priv->driver_lock, flags);
516 break;
517 case CMD_RET(CMD_BT_ACCESS):
518 spin_lock_irqsave(&priv->driver_lock, flags);
519 if (priv->cur_cmd->callback_arg)
520 memcpy((void *)priv->cur_cmd->callback_arg,
521 &resp->params.bt.addr1, 2 * ETH_ALEN);
522 spin_unlock_irqrestore(&priv->driver_lock, flags);
523 break;
524 case CMD_RET(CMD_FWT_ACCESS):
525 spin_lock_irqsave(&priv->driver_lock, flags);
526 if (priv->cur_cmd->callback_arg)
527 memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
528 sizeof(resp->params.fwt));
529 spin_unlock_irqrestore(&priv->driver_lock, flags);
530 break;
531 case CMD_RET(CMD_802_11_BEACON_CTRL):
532 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
533 break;
534
535 default:
536 lbs_deb_host("CMD_RESP: unknown cmd response 0x%04x\n",
537 le16_to_cpu(resp->command));
538 break;
539 }
540 lbs_deb_leave(LBS_DEB_HOST);
541 return ret;
542 }
543
544 int lbs_process_rx_command(struct lbs_private *priv)
545 {
546 uint16_t respcmd, curcmd;
547 struct cmd_header *resp;
548 int ret = 0;
549 unsigned long flags;
550 uint16_t result;
551
552 lbs_deb_enter(LBS_DEB_HOST);
553
554 mutex_lock(&priv->lock);
555 spin_lock_irqsave(&priv->driver_lock, flags);
556
557 if (!priv->cur_cmd) {
558 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
559 ret = -1;
560 spin_unlock_irqrestore(&priv->driver_lock, flags);
561 goto done;
562 }
563
564 resp = (void *)priv->upld_buf;
565
566 curcmd = le16_to_cpu(resp->command);
567
568 respcmd = le16_to_cpu(resp->command);
569 result = le16_to_cpu(resp->result);
570
571 lbs_deb_host("CMD_RESP: response 0x%04x, seq %d, size %d, jiffies %lu\n",
572 respcmd, le16_to_cpu(resp->seqnum), priv->upld_len, jiffies);
573 lbs_deb_hex(LBS_DEB_HOST, "CMD_RESP", (void *) resp, priv->upld_len);
574
575 if (resp->seqnum != resp->seqnum) {
576 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
577 le16_to_cpu(resp->seqnum), le16_to_cpu(resp->seqnum));
578 spin_unlock_irqrestore(&priv->driver_lock, flags);
579 ret = -1;
580 goto done;
581 }
582 if (respcmd != CMD_RET(curcmd) &&
583 respcmd != CMD_802_11_ASSOCIATE && curcmd != CMD_RET_802_11_ASSOCIATE) {
584 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
585 spin_unlock_irqrestore(&priv->driver_lock, flags);
586 ret = -1;
587 goto done;
588 }
589
590 if (resp->result == cpu_to_le16(0x0004)) {
591 /* 0x0004 means -EAGAIN. Drop the response, let it time out
592 and be resubmitted */
593 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
594 le16_to_cpu(resp->command));
595 spin_unlock_irqrestore(&priv->driver_lock, flags);
596 ret = -1;
597 goto done;
598 }
599
600 /* Now we got response from FW, cancel the command timer */
601 del_timer(&priv->command_timer);
602 priv->cmd_timed_out = 0;
603 if (priv->nr_retries) {
604 lbs_pr_info("Received result %x to command %x after %d retries\n",
605 result, curcmd, priv->nr_retries);
606 priv->nr_retries = 0;
607 }
608
609 /* Store the response code to cur_cmd_retcode. */
610 priv->cur_cmd_retcode = result;
611
612 if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
613 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
614 u16 action = le16_to_cpu(psmode->action);
615
616 lbs_deb_host(
617 "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
618 result, action);
619
620 if (result) {
621 lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
622 result);
623 /*
624 * We should not re-try enter-ps command in
625 * ad-hoc mode. It takes place in
626 * lbs_execute_next_command().
627 */
628 if (priv->mode == IW_MODE_ADHOC &&
629 action == CMD_SUBCMD_ENTER_PS)
630 priv->psmode = LBS802_11POWERMODECAM;
631 } else if (action == CMD_SUBCMD_ENTER_PS) {
632 priv->needtowakeup = 0;
633 priv->psstate = PS_STATE_AWAKE;
634
635 lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
636 if (priv->connect_status != LBS_CONNECTED) {
637 /*
638 * When Deauth Event received before Enter_PS command
639 * response, We need to wake up the firmware.
640 */
641 lbs_deb_host(
642 "disconnected, invoking lbs_ps_wakeup\n");
643
644 spin_unlock_irqrestore(&priv->driver_lock, flags);
645 mutex_unlock(&priv->lock);
646 lbs_ps_wakeup(priv, 0);
647 mutex_lock(&priv->lock);
648 spin_lock_irqsave(&priv->driver_lock, flags);
649 }
650 } else if (action == CMD_SUBCMD_EXIT_PS) {
651 priv->needtowakeup = 0;
652 priv->psstate = PS_STATE_FULL_POWER;
653 lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
654 } else {
655 lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
656 }
657
658 lbs_complete_command(priv, priv->cur_cmd, result);
659 spin_unlock_irqrestore(&priv->driver_lock, flags);
660
661 ret = 0;
662 goto done;
663 }
664
665 /* If the command is not successful, cleanup and return failure */
666 if ((result != 0 || !(respcmd & 0x8000))) {
667 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
668 result, respcmd);
669 /*
670 * Handling errors here
671 */
672 switch (respcmd) {
673 case CMD_RET(CMD_GET_HW_SPEC):
674 case CMD_RET(CMD_802_11_RESET):
675 lbs_deb_host("CMD_RESP: reset failed\n");
676 break;
677
678 }
679 lbs_complete_command(priv, priv->cur_cmd, result);
680 spin_unlock_irqrestore(&priv->driver_lock, flags);
681
682 ret = -1;
683 goto done;
684 }
685
686 spin_unlock_irqrestore(&priv->driver_lock, flags);
687
688 if (priv->cur_cmd && priv->cur_cmd->callback) {
689 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
690 resp);
691 } else
692 ret = handle_cmd_response(priv, 0, resp);
693
694 spin_lock_irqsave(&priv->driver_lock, flags);
695
696 if (priv->cur_cmd) {
697 /* Clean up and Put current command back to cmdfreeq */
698 lbs_complete_command(priv, priv->cur_cmd, result);
699 }
700 spin_unlock_irqrestore(&priv->driver_lock, flags);
701
702 done:
703 mutex_unlock(&priv->lock);
704 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
705 return ret;
706 }
707
708 static int lbs_send_confirmwake(struct lbs_private *priv)
709 {
710 struct cmd_header *cmd = &priv->lbs_ps_confirm_wake;
711 int ret = 0;
712
713 lbs_deb_enter(LBS_DEB_HOST);
714
715 cmd->command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
716 cmd->size = cpu_to_le16(sizeof(*cmd));
717 cmd->seqnum = cpu_to_le16(++priv->seqnum);
718 cmd->result = 0;
719
720 lbs_deb_host("SEND_WAKEC_CMD: before download\n");
721
722 lbs_deb_hex(LBS_DEB_HOST, "wake confirm command", (void *)cmd, sizeof(*cmd));
723
724 ret = priv->hw_host_to_card(priv, MVMS_CMD, (void *)cmd, sizeof(*cmd));
725 if (ret)
726 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
727
728 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
729 return ret;
730 }
731
732 int lbs_process_event(struct lbs_private *priv)
733 {
734 int ret = 0;
735 u32 eventcause;
736
737 lbs_deb_enter(LBS_DEB_CMD);
738
739 spin_lock_irq(&priv->driver_lock);
740 eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
741 spin_unlock_irq(&priv->driver_lock);
742
743 lbs_deb_cmd("event cause %d\n", eventcause);
744
745 switch (eventcause) {
746 case MACREG_INT_CODE_LINK_SENSED:
747 lbs_deb_cmd("EVENT: MACREG_INT_CODE_LINK_SENSED\n");
748 break;
749
750 case MACREG_INT_CODE_DEAUTHENTICATED:
751 lbs_deb_cmd("EVENT: deauthenticated\n");
752 lbs_mac_event_disconnected(priv);
753 break;
754
755 case MACREG_INT_CODE_DISASSOCIATED:
756 lbs_deb_cmd("EVENT: disassociated\n");
757 lbs_mac_event_disconnected(priv);
758 break;
759
760 case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
761 lbs_deb_cmd("EVENT: link lost\n");
762 lbs_mac_event_disconnected(priv);
763 break;
764
765 case MACREG_INT_CODE_PS_SLEEP:
766 lbs_deb_cmd("EVENT: sleep\n");
767
768 /* handle unexpected PS SLEEP event */
769 if (priv->psstate == PS_STATE_FULL_POWER) {
770 lbs_deb_cmd(
771 "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
772 break;
773 }
774 priv->psstate = PS_STATE_PRE_SLEEP;
775
776 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
777
778 break;
779
780 case MACREG_INT_CODE_HOST_AWAKE:
781 lbs_deb_cmd("EVENT: HOST_AWAKE\n");
782 lbs_send_confirmwake(priv);
783 break;
784
785 case MACREG_INT_CODE_PS_AWAKE:
786 lbs_deb_cmd("EVENT: awake\n");
787 /* handle unexpected PS AWAKE event */
788 if (priv->psstate == PS_STATE_FULL_POWER) {
789 lbs_deb_cmd(
790 "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
791 break;
792 }
793
794 priv->psstate = PS_STATE_AWAKE;
795
796 if (priv->needtowakeup) {
797 /*
798 * wait for the command processing to finish
799 * before resuming sending
800 * priv->needtowakeup will be set to FALSE
801 * in lbs_ps_wakeup()
802 */
803 lbs_deb_cmd("waking up ...\n");
804 lbs_ps_wakeup(priv, 0);
805 }
806 break;
807
808 case MACREG_INT_CODE_MIC_ERR_UNICAST:
809 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
810 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
811 break;
812
813 case MACREG_INT_CODE_MIC_ERR_MULTICAST:
814 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
815 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
816 break;
817 case MACREG_INT_CODE_MIB_CHANGED:
818 case MACREG_INT_CODE_INIT_DONE:
819 break;
820
821 case MACREG_INT_CODE_ADHOC_BCN_LOST:
822 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
823 break;
824
825 case MACREG_INT_CODE_RSSI_LOW:
826 lbs_pr_alert("EVENT: rssi low\n");
827 break;
828 case MACREG_INT_CODE_SNR_LOW:
829 lbs_pr_alert("EVENT: snr low\n");
830 break;
831 case MACREG_INT_CODE_MAX_FAIL:
832 lbs_pr_alert("EVENT: max fail\n");
833 break;
834 case MACREG_INT_CODE_RSSI_HIGH:
835 lbs_pr_alert("EVENT: rssi high\n");
836 break;
837 case MACREG_INT_CODE_SNR_HIGH:
838 lbs_pr_alert("EVENT: snr high\n");
839 break;
840
841 case MACREG_INT_CODE_MESH_AUTO_STARTED:
842 /* Ignore spurious autostart events if autostart is disabled */
843 if (!priv->mesh_autostart_enabled) {
844 lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
845 break;
846 }
847 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
848 priv->mesh_connect_status = LBS_CONNECTED;
849 if (priv->mesh_open) {
850 netif_carrier_on(priv->mesh_dev);
851 if (!priv->tx_pending_len)
852 netif_wake_queue(priv->mesh_dev);
853 }
854 priv->mode = IW_MODE_ADHOC;
855 schedule_work(&priv->sync_channel);
856 break;
857
858 default:
859 lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
860 break;
861 }
862
863 spin_lock_irq(&priv->driver_lock);
864 priv->eventcause = 0;
865 spin_unlock_irq(&priv->driver_lock);
866
867 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
868 return ret;
869 }
WRT350N Kernel Patches