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[PATCH] libertas: move generic firmware reset command to common code
[linux-2.6.git] / drivers / net / wireless / libertas / main.c
blob589c583ddbebda0fcd08b337e1dab317c062db83
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/freezer.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/if_arp.h>
13 #include <linux/kthread.h>
14
15 #include <net/iw_handler.h>
16 #include <net/ieee80211.h>
17
18 #include "host.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "wext.h"
22 #include "debugfs.h"
23 #include "assoc.h"
24
25 #define DRIVER_RELEASE_VERSION "322.p1"
26 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
27 #ifdef DEBUG
28 "-dbg"
29 #endif
30 "";
31
32
33 /* Module parameters */
34 unsigned int libertas_debug = 0;
35 module_param(libertas_debug, int, 0644);
36 EXPORT_SYMBOL_GPL(libertas_debug);
37
38
39 #define WLAN_TX_PWR_DEFAULT 20 /*100mW */
40 #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
41 #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
42 #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
43 #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
44
45 /* Format { channel, frequency (MHz), maxtxpower } */
46 /* band: 'B/G', region: USA FCC/Canada IC */
47 static struct chan_freq_power channel_freq_power_US_BG[] = {
48 {1, 2412, WLAN_TX_PWR_US_DEFAULT},
49 {2, 2417, WLAN_TX_PWR_US_DEFAULT},
50 {3, 2422, WLAN_TX_PWR_US_DEFAULT},
51 {4, 2427, WLAN_TX_PWR_US_DEFAULT},
52 {5, 2432, WLAN_TX_PWR_US_DEFAULT},
53 {6, 2437, WLAN_TX_PWR_US_DEFAULT},
54 {7, 2442, WLAN_TX_PWR_US_DEFAULT},
55 {8, 2447, WLAN_TX_PWR_US_DEFAULT},
56 {9, 2452, WLAN_TX_PWR_US_DEFAULT},
57 {10, 2457, WLAN_TX_PWR_US_DEFAULT},
58 {11, 2462, WLAN_TX_PWR_US_DEFAULT}
59 };
60
61 /* band: 'B/G', region: Europe ETSI */
62 static struct chan_freq_power channel_freq_power_EU_BG[] = {
63 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
64 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
65 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
66 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
67 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
68 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
69 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
70 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
71 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
72 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
73 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
74 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
75 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
76 };
77
78 /* band: 'B/G', region: Spain */
79 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
80 {10, 2457, WLAN_TX_PWR_DEFAULT},
81 {11, 2462, WLAN_TX_PWR_DEFAULT}
82 };
83
84 /* band: 'B/G', region: France */
85 static struct chan_freq_power channel_freq_power_FR_BG[] = {
86 {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
87 {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
88 {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
89 {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
90 };
91
92 /* band: 'B/G', region: Japan */
93 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
94 {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
95 {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
96 {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
97 {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
98 {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
99 {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
100 {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
101 {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
102 {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
103 {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
104 {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
105 {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
106 {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
107 {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
108 };
109
110 /**
111 * the structure for channel, frequency and power
112 */
113 struct region_cfp_table {
114 u8 region;
115 struct chan_freq_power *cfp_BG;
116 int cfp_no_BG;
117 };
118
119 /**
120 * the structure for the mapping between region and CFP
121 */
122 static struct region_cfp_table region_cfp_table[] = {
123 {0x10, /*US FCC */
124 channel_freq_power_US_BG,
125 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
126 }
127 ,
128 {0x20, /*CANADA IC */
129 channel_freq_power_US_BG,
130 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
131 }
132 ,
133 {0x30, /*EU*/ channel_freq_power_EU_BG,
134 sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
135 }
136 ,
137 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
138 sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
139 }
140 ,
141 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
142 sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
143 }
144 ,
145 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
146 sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
147 }
148 ,
149 /*Add new region here */
150 };
151
152 /**
153 * the rates supported
154 */
155 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
156 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
157 0 };
158
159 /**
160 * the rates supported for ad-hoc G mode
161 */
162 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
163 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
164 0 };
165
166 /**
167 * the rates supported for ad-hoc B mode
168 */
169 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
170
171 /**
172 * the table to keep region code
173 */
174 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
175 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
176
177 /**
178 * Attributes exported through sysfs
179 */
180
181 /**
182 * @brief Get function for sysfs attribute anycast_mask
183 */
184 static ssize_t libertas_anycast_get(struct device * dev,
185 struct device_attribute *attr, char * buf)
186 {
187 struct cmd_ds_mesh_access mesh_access;
188
189 memset(&mesh_access, 0, sizeof(mesh_access));
190 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
191 CMD_MESH_ACCESS,
192 CMD_ACT_MESH_GET_ANYCAST,
193 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
194
195 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
196 }
197
198 /**
199 * @brief Set function for sysfs attribute anycast_mask
200 */
201 static ssize_t libertas_anycast_set(struct device * dev,
202 struct device_attribute *attr, const char * buf, size_t count)
203 {
204 struct cmd_ds_mesh_access mesh_access;
205 uint32_t datum;
206
207 memset(&mesh_access, 0, sizeof(mesh_access));
208 sscanf(buf, "%x", &datum);
209 mesh_access.data[0] = cpu_to_le32(datum);
210
211 libertas_prepare_and_send_command((to_net_dev(dev))->priv,
212 CMD_MESH_ACCESS,
213 CMD_ACT_MESH_SET_ANYCAST,
214 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
215 return strlen(buf);
216 }
217
218 /**
219 * anycast_mask attribute to be exported per mshX interface
220 * through sysfs (/sys/class/net/mshX/anycast_mask)
221 */
222 static DEVICE_ATTR(anycast_mask, 0644, libertas_anycast_get, libertas_anycast_set);
223
224 /**
225 * @brief Check if the device can be open and wait if necessary.
226 *
227 * @param dev A pointer to net_device structure
228 * @return 0
229 *
230 * For USB adapter, on some systems the device open handler will be
231 * called before FW ready. Use the following flag check and wait
232 * function to work around the issue.
233 *
234 */
235 static int pre_open_check(struct net_device *dev)
236 {
237 wlan_private *priv = (wlan_private *) dev->priv;
238 wlan_adapter *adapter = priv->adapter;
239 int i = 0;
240
241 while (!adapter->fw_ready && i < 20) {
242 i++;
243 msleep_interruptible(100);
244 }
245 if (!adapter->fw_ready) {
246 lbs_pr_err("firmware not ready\n");
247 return -1;
248 }
249
250 return 0;
251 }
252
253 /**
254 * @brief This function opens the device
255 *
256 * @param dev A pointer to net_device structure
257 * @return 0
258 */
259 static int wlan_dev_open(struct net_device *dev)
260 {
261 wlan_private *priv = (wlan_private *) dev->priv;
262 wlan_adapter *adapter = priv->adapter;
263
264 lbs_deb_enter(LBS_DEB_NET);
265
266 priv->open = 1;
267
268 if (adapter->connect_status == LIBERTAS_CONNECTED) {
269 netif_carrier_on(priv->dev);
270 netif_carrier_on(priv->mesh_dev);
271 } else {
272 netif_carrier_off(priv->dev);
273 netif_carrier_off(priv->mesh_dev);
274 }
275
276 lbs_deb_leave(LBS_DEB_NET);
277 return 0;
278 }
279 /**
280 * @brief This function opens the mshX interface
281 *
282 * @param dev A pointer to net_device structure
283 * @return 0
284 */
285 static int mesh_open(struct net_device *dev)
286 {
287 wlan_private *priv = (wlan_private *) dev->priv ;
288
289 if (pre_open_check(dev) == -1)
290 return -1;
291 priv->mesh_open = 1 ;
292 netif_wake_queue(priv->mesh_dev);
293 if (priv->infra_open == 0)
294 return wlan_dev_open(priv->dev) ;
295 return 0;
296 }
297
298 /**
299 * @brief This function opens the ethX interface
300 *
301 * @param dev A pointer to net_device structure
302 * @return 0
303 */
304 static int wlan_open(struct net_device *dev)
305 {
306 wlan_private *priv = (wlan_private *) dev->priv ;
307
308 if(pre_open_check(dev) == -1)
309 return -1;
310 priv->infra_open = 1 ;
311 netif_wake_queue(priv->dev);
312 if (priv->open == 0)
313 return wlan_dev_open(priv->dev) ;
314 return 0;
315 }
316
317 static int wlan_dev_close(struct net_device *dev)
318 {
319 wlan_private *priv = dev->priv;
320
321 lbs_deb_enter(LBS_DEB_NET);
322
323 netif_carrier_off(priv->dev);
324 priv->open = 0;
325
326 lbs_deb_leave(LBS_DEB_NET);
327 return 0;
328 }
329
330 /**
331 * @brief This function closes the mshX interface
332 *
333 * @param dev A pointer to net_device structure
334 * @return 0
335 */
336 static int mesh_close(struct net_device *dev)
337 {
338 wlan_private *priv = (wlan_private *) (dev->priv);
339
340 priv->mesh_open = 0;
341 netif_stop_queue(priv->mesh_dev);
342 if (priv->infra_open == 0)
343 return wlan_dev_close(dev);
344 else
345 return 0;
346 }
347
348 /**
349 * @brief This function closes the ethX interface
350 *
351 * @param dev A pointer to net_device structure
352 * @return 0
353 */
354 static int wlan_close(struct net_device *dev)
355 {
356 wlan_private *priv = (wlan_private *) dev->priv;
357
358 netif_stop_queue(dev);
359 priv->infra_open = 0;
360 if (priv->mesh_open == 0)
361 return wlan_dev_close(dev);
362 else
363 return 0;
364 }
365
366
367 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
368 {
369 int ret = 0;
370 wlan_private *priv = dev->priv;
371
372 lbs_deb_enter(LBS_DEB_NET);
373
374 if (priv->dnld_sent || priv->adapter->TxLockFlag) {
375 priv->stats.tx_dropped++;
376 goto done;
377 }
378
379 netif_stop_queue(priv->dev);
380 netif_stop_queue(priv->mesh_dev);
381
382 if (libertas_process_tx(priv, skb) == 0)
383 dev->trans_start = jiffies;
384 done:
385 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
386 return ret;
387 }
388
389 /**
390 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
391 *
392 */
393 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
394 {
395 wlan_private *priv = dev->priv;
396 int ret;
397
398 lbs_deb_enter(LBS_DEB_MESH);
399
400 SET_MESH_FRAME(skb);
401
402 ret = wlan_hard_start_xmit(skb, priv->dev);
403 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
404 return ret;
405 }
406
407 /**
408 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
409 *
410 */
411 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
412 {
413 int ret;
414
415 lbs_deb_enter(LBS_DEB_NET);
416
417 UNSET_MESH_FRAME(skb);
418
419 ret = wlan_hard_start_xmit(skb, dev);
420 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
421 return ret;
422 }
423
424 static void wlan_tx_timeout(struct net_device *dev)
425 {
426 wlan_private *priv = (wlan_private *) dev->priv;
427
428 lbs_deb_enter(LBS_DEB_TX);
429
430 lbs_pr_err("tx watch dog timeout\n");
431
432 priv->dnld_sent = DNLD_RES_RECEIVED;
433 dev->trans_start = jiffies;
434
435 if (priv->adapter->currenttxskb) {
436 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
437 /* If we are here, we have not received feedback from
438 the previous packet. Assume TX_FAIL and move on. */
439 priv->adapter->eventcause = 0x01000000;
440 libertas_send_tx_feedback(priv);
441 } else
442 wake_up_interruptible(&priv->waitq);
443 } else if (priv->adapter->connect_status == LIBERTAS_CONNECTED) {
444 netif_wake_queue(priv->dev);
445 netif_wake_queue(priv->mesh_dev);
446 }
447
448 lbs_deb_leave(LBS_DEB_TX);
449 }
450
451 /**
452 * @brief This function returns the network statistics
453 *
454 * @param dev A pointer to wlan_private structure
455 * @return A pointer to net_device_stats structure
456 */
457 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
458 {
459 wlan_private *priv = (wlan_private *) dev->priv;
460
461 return &priv->stats;
462 }
463
464 static int wlan_set_mac_address(struct net_device *dev, void *addr)
465 {
466 int ret = 0;
467 wlan_private *priv = (wlan_private *) dev->priv;
468 wlan_adapter *adapter = priv->adapter;
469 struct sockaddr *phwaddr = addr;
470
471 lbs_deb_enter(LBS_DEB_NET);
472
473 /* In case it was called from the mesh device */
474 dev = priv->dev ;
475
476 memset(adapter->current_addr, 0, ETH_ALEN);
477
478 /* dev->dev_addr is 8 bytes */
479 lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
480
481 lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
482 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
483
484 ret = libertas_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
485 CMD_ACT_SET,
486 CMD_OPTION_WAITFORRSP, 0, NULL);
487
488 if (ret) {
489 lbs_deb_net("set MAC address failed\n");
490 ret = -1;
491 goto done;
492 }
493
494 lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
495 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
496 if (priv->mesh_dev)
497 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
498
499 done:
500 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
501 return ret;
502 }
503
504 static int wlan_copy_multicast_address(wlan_adapter * adapter,
505 struct net_device *dev)
506 {
507 int i = 0;
508 struct dev_mc_list *mcptr = dev->mc_list;
509
510 for (i = 0; i < dev->mc_count; i++) {
511 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
512 mcptr = mcptr->next;
513 }
514
515 return i;
516
517 }
518
519 static void wlan_set_multicast_list(struct net_device *dev)
520 {
521 wlan_private *priv = dev->priv;
522 wlan_adapter *adapter = priv->adapter;
523 int oldpacketfilter;
524
525 lbs_deb_enter(LBS_DEB_NET);
526
527 oldpacketfilter = adapter->currentpacketfilter;
528
529 if (dev->flags & IFF_PROMISC) {
530 lbs_deb_net("enable promiscuous mode\n");
531 adapter->currentpacketfilter |=
532 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
533 adapter->currentpacketfilter &=
534 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
535 CMD_ACT_MAC_MULTICAST_ENABLE);
536 } else {
537 /* Multicast */
538 adapter->currentpacketfilter &=
539 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
540
541 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
542 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
543 lbs_deb_net( "enabling all multicast\n");
544 adapter->currentpacketfilter |=
545 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
546 adapter->currentpacketfilter &=
547 ~CMD_ACT_MAC_MULTICAST_ENABLE;
548 } else {
549 adapter->currentpacketfilter &=
550 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
551
552 if (!dev->mc_count) {
553 lbs_deb_net("no multicast addresses, "
554 "disabling multicast\n");
555 adapter->currentpacketfilter &=
556 ~CMD_ACT_MAC_MULTICAST_ENABLE;
557 } else {
558 int i;
559
560 adapter->currentpacketfilter |=
561 CMD_ACT_MAC_MULTICAST_ENABLE;
562
563 adapter->nr_of_multicastmacaddr =
564 wlan_copy_multicast_address(adapter, dev);
565
566 lbs_deb_net("multicast addresses: %d\n",
567 dev->mc_count);
568
569 for (i = 0; i < dev->mc_count; i++) {
570 lbs_deb_net("Multicast address %d:"
571 MAC_FMT "\n", i,
572 adapter->multicastlist[i][0],
573 adapter->multicastlist[i][1],
574 adapter->multicastlist[i][2],
575 adapter->multicastlist[i][3],
576 adapter->multicastlist[i][4],
577 adapter->multicastlist[i][5]);
578 }
579 /* send multicast addresses to firmware */
580 libertas_prepare_and_send_command(priv,
581 CMD_MAC_MULTICAST_ADR,
582 CMD_ACT_SET, 0, 0,
583 NULL);
584 }
585 }
586 }
587
588 if (adapter->currentpacketfilter != oldpacketfilter) {
589 libertas_set_mac_packet_filter(priv);
590 }
591
592 lbs_deb_leave(LBS_DEB_NET);
593 }
594
595 /**
596 * @brief This function handles the major jobs in the WLAN driver.
597 * It handles all events generated by firmware, RX data received
598 * from firmware and TX data sent from kernel.
599 *
600 * @param data A pointer to wlan_thread structure
601 * @return 0
602 */
603 static int libertas_thread(void *data)
604 {
605 struct net_device *dev = data;
606 wlan_private *priv = dev->priv;
607 wlan_adapter *adapter = priv->adapter;
608 wait_queue_t wait;
609 u8 ireg = 0;
610
611 lbs_deb_enter(LBS_DEB_THREAD);
612
613 init_waitqueue_entry(&wait, current);
614
615 for (;;) {
616 lbs_deb_thread( "main-thread 111: intcounter=%d "
617 "currenttxskb=%p dnld_sent=%d\n",
618 adapter->intcounter,
619 adapter->currenttxskb, priv->dnld_sent);
620
621 add_wait_queue(&priv->waitq, &wait);
622 set_current_state(TASK_INTERRUPTIBLE);
623 spin_lock_irq(&adapter->driver_lock);
624 if ((adapter->psstate == PS_STATE_SLEEP) ||
625 (!adapter->intcounter
626 && (priv->dnld_sent || adapter->cur_cmd ||
627 list_empty(&adapter->cmdpendingq)))) {
628 lbs_deb_thread(
629 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
630 adapter->connect_status, adapter->intcounter,
631 adapter->psmode, adapter->psstate);
632 spin_unlock_irq(&adapter->driver_lock);
633 schedule();
634 } else
635 spin_unlock_irq(&adapter->driver_lock);
636
637
638 lbs_deb_thread(
639 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
640 "dnld_sent=%d\n", adapter->intcounter,
641 adapter->currenttxskb, priv->dnld_sent);
642
643 set_current_state(TASK_RUNNING);
644 remove_wait_queue(&priv->waitq, &wait);
645 try_to_freeze();
646
647 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
648 "dnld_sent=%d\n",
649 adapter->intcounter,
650 adapter->currenttxskb, priv->dnld_sent);
651
652 if (kthread_should_stop()
653 || adapter->surpriseremoved) {
654 lbs_deb_thread(
655 "main-thread: break from main thread: surpriseremoved=0x%x\n",
656 adapter->surpriseremoved);
657 break;
658 }
659
660
661 spin_lock_irq(&adapter->driver_lock);
662 if (adapter->intcounter) {
663 u8 int_status;
664 adapter->intcounter = 0;
665 int_status = priv->hw_get_int_status(priv, &ireg);
666
667 if (int_status) {
668 lbs_deb_thread(
669 "main-thread: reading HOST_INT_STATUS_REG failed\n");
670 spin_unlock_irq(&adapter->driver_lock);
671 continue;
672 }
673 adapter->hisregcpy |= ireg;
674 }
675
676 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
677 "dnld_sent=%d\n",
678 adapter->intcounter,
679 adapter->currenttxskb, priv->dnld_sent);
680
681 /* command response? */
682 if (adapter->hisregcpy & his_cmdupldrdy) {
683 lbs_deb_thread("main-thread: cmd response ready\n");
684
685 adapter->hisregcpy &= ~his_cmdupldrdy;
686 spin_unlock_irq(&adapter->driver_lock);
687 libertas_process_rx_command(priv);
688 spin_lock_irq(&adapter->driver_lock);
689 }
690
691 /* Any Card Event */
692 if (adapter->hisregcpy & his_cardevent) {
693 lbs_deb_thread("main-thread: Card Event Activity\n");
694
695 adapter->hisregcpy &= ~his_cardevent;
696
697 if (priv->hw_read_event_cause(priv)) {
698 lbs_pr_alert(
699 "main-thread: hw_read_event_cause failed\n");
700 spin_unlock_irq(&adapter->driver_lock);
701 continue;
702 }
703 spin_unlock_irq(&adapter->driver_lock);
704 libertas_process_event(priv);
705 } else
706 spin_unlock_irq(&adapter->driver_lock);
707
708 /* Check if we need to confirm Sleep Request received previously */
709 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
710 if (!priv->dnld_sent && !adapter->cur_cmd) {
711 if (adapter->connect_status ==
712 LIBERTAS_CONNECTED) {
713 lbs_deb_thread(
714 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
715 "dnld_sent=%d cur_cmd=%p, confirm now\n",
716 adapter->intcounter,
717 adapter->currenttxskb,
718 priv->dnld_sent,
719 adapter->cur_cmd);
720
721 libertas_ps_confirm_sleep(priv,
722 (u16) adapter->psmode);
723 } else {
724 /* workaround for firmware sending
725 * deauth/linkloss event immediately
726 * after sleep request, remove this
727 * after firmware fixes it
728 */
729 adapter->psstate = PS_STATE_AWAKE;
730 lbs_pr_alert(
731 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
732 }
733 }
734 }
735
736 /* The PS state is changed during processing of Sleep Request
737 * event above
738 */
739 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
740 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
741 continue;
742
743 /* Execute the next command */
744 if (!priv->dnld_sent && !priv->adapter->cur_cmd)
745 libertas_execute_next_command(priv);
746
747 /* Wake-up command waiters which can't sleep in
748 * libertas_prepare_and_send_command
749 */
750 if (!adapter->nr_cmd_pending)
751 wake_up_all(&adapter->cmd_pending);
752
753 libertas_tx_runqueue(priv);
754 }
755
756 del_timer(&adapter->command_timer);
757 adapter->nr_cmd_pending = 0;
758 wake_up_all(&adapter->cmd_pending);
759
760 lbs_deb_leave(LBS_DEB_THREAD);
761 return 0;
762 }
763
764 /**
765 * @brief This function adds the card. it will probe the
766 * card, allocate the wlan_priv and initialize the device.
767 *
768 * @param card A pointer to card
769 * @return A pointer to wlan_private structure
770 */
771 wlan_private *libertas_add_card(void *card, struct device *dmdev)
772 {
773 struct net_device *dev = NULL;
774 wlan_private *priv = NULL;
775
776 lbs_deb_enter(LBS_DEB_NET);
777
778 /* Allocate an Ethernet device and register it */
779 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
780 lbs_pr_err("init ethX device failed\n");
781 return NULL;
782 }
783 priv = dev->priv;
784
785 /* allocate buffer for wlan_adapter */
786 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
787 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
788 goto err_kzalloc;
789 }
790
791 priv->dev = dev;
792 priv->card = card;
793 priv->mesh_open = 0;
794 priv->infra_open = 0;
795
796 SET_MODULE_OWNER(dev);
797
798 /* Setup the OS Interface to our functions */
799 dev->open = wlan_open;
800 dev->hard_start_xmit = wlan_pre_start_xmit;
801 dev->stop = wlan_close;
802 dev->set_mac_address = wlan_set_mac_address;
803 dev->tx_timeout = wlan_tx_timeout;
804 dev->get_stats = wlan_get_stats;
805 dev->watchdog_timeo = 5 * HZ;
806 dev->ethtool_ops = &libertas_ethtool_ops;
807 #ifdef WIRELESS_EXT
808 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
809 #endif
810 #define NETIF_F_DYNALLOC 16
811 dev->features |= NETIF_F_DYNALLOC;
812 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
813 dev->set_multicast_list = wlan_set_multicast_list;
814
815 SET_NETDEV_DEV(dev, dmdev);
816
817 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
818 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
819
820 spin_lock_init(&priv->adapter->driver_lock);
821 init_waitqueue_head(&priv->adapter->cmd_pending);
822 priv->adapter->nr_cmd_pending = 0;
823 goto done;
824
825 err_kzalloc:
826 free_netdev(dev);
827 priv = NULL;
828 done:
829 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
830 return priv;
831 }
832 EXPORT_SYMBOL_GPL(libertas_add_card);
833
834 int libertas_activate_card(wlan_private *priv, char *fw_name)
835 {
836 struct net_device *dev = priv->dev;
837 int ret = -1;
838
839 lbs_deb_enter(LBS_DEB_MAIN);
840
841 lbs_deb_thread("Starting main thread...\n");
842 init_waitqueue_head(&priv->waitq);
843 priv->main_thread = kthread_run(libertas_thread, dev, "libertas_main");
844 if (IS_ERR(priv->main_thread)) {
845 lbs_deb_thread("Error creating main thread.\n");
846 goto done;
847 }
848
849 priv->assoc_thread =
850 create_singlethread_workqueue("libertas_assoc");
851 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
852 INIT_WORK(&priv->sync_channel, libertas_sync_channel);
853
854 /*
855 * Register the device. Fillup the private data structure with
856 * relevant information from the card and request for the required
857 * IRQ.
858 */
859 if (priv->hw_register_dev(priv) < 0) {
860 lbs_pr_err("failed to register WLAN device\n");
861 goto err_registerdev;
862 }
863
864 /* init FW and HW */
865 if (fw_name && libertas_init_fw(priv, fw_name)) {
866 lbs_pr_err("firmware init failed\n");
867 goto err_registerdev;
868 }
869
870 if (register_netdev(dev)) {
871 lbs_pr_err("cannot register ethX device\n");
872 goto err_init_fw;
873 }
874
875 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
876
877 libertas_debugfs_init_one(priv, dev);
878
879 ret = 0;
880 goto done;
881
882 err_init_fw:
883 priv->hw_unregister_dev(priv);
884 err_registerdev:
885 destroy_workqueue(priv->assoc_thread);
886 /* Stop the thread servicing the interrupts */
887 wake_up_interruptible(&priv->waitq);
888 kthread_stop(priv->main_thread);
889 done:
890 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
891 return ret;
892 }
893 EXPORT_SYMBOL_GPL(libertas_activate_card);
894
895
896 /**
897 * @brief This function adds mshX interface
898 *
899 * @param priv A pointer to the wlan_private structure
900 * @return 0 if successful, -X otherwise
901 */
902 int libertas_add_mesh(wlan_private *priv, struct device *dev)
903 {
904 struct net_device *mesh_dev = NULL;
905 int ret = 0;
906
907 lbs_deb_enter(LBS_DEB_MESH);
908
909 /* Allocate a virtual mesh device */
910 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
911 lbs_deb_mesh("init mshX device failed\n");
912 ret = -ENOMEM;
913 goto done;
914 }
915 mesh_dev->priv = priv;
916 priv->mesh_dev = mesh_dev;
917
918 SET_MODULE_OWNER(mesh_dev);
919
920 mesh_dev->open = mesh_open;
921 mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
922 mesh_dev->stop = mesh_close;
923 mesh_dev->get_stats = wlan_get_stats;
924 mesh_dev->set_mac_address = wlan_set_mac_address;
925 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
926 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
927 sizeof(priv->dev->dev_addr));
928
929 SET_NETDEV_DEV(priv->mesh_dev, dev);
930
931 #ifdef WIRELESS_EXT
932 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
933 #endif
934 #define NETIF_F_DYNALLOC 16
935
936 /* Register virtual mesh interface */
937 ret = register_netdev(mesh_dev);
938 if (ret) {
939 lbs_pr_err("cannot register mshX virtual interface\n");
940 goto err_free;
941 }
942
943 ret = device_create_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
944 if (ret)
945 goto err_unregister;
946
947 /* Everything successful */
948 ret = 0;
949 goto done;
950
951
952 err_unregister:
953 unregister_netdev(mesh_dev);
954
955 err_free:
956 free_netdev(mesh_dev);
957
958 done:
959 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
960 return ret;
961 }
962 EXPORT_SYMBOL_GPL(libertas_add_mesh);
963
964 static void wake_pending_cmdnodes(wlan_private *priv)
965 {
966 struct cmd_ctrl_node *cmdnode;
967 unsigned long flags;
968
969 lbs_deb_enter(LBS_DEB_CMD);
970
971 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
972 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
973 cmdnode->cmdwaitqwoken = 1;
974 wake_up_interruptible(&cmdnode->cmdwait_q);
975 }
976 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
977 }
978
979
980 int libertas_remove_card(wlan_private *priv)
981 {
982 wlan_adapter *adapter;
983 struct net_device *dev;
984 union iwreq_data wrqu;
985
986 lbs_deb_enter(LBS_DEB_NET);
987
988 if (!priv)
989 goto out;
990
991 adapter = priv->adapter;
992
993 if (!adapter)
994 goto out;
995
996 dev = priv->dev;
997
998 netif_stop_queue(priv->dev);
999 netif_carrier_off(priv->dev);
1000
1001 wake_pending_cmdnodes(priv);
1002
1003 unregister_netdev(dev);
1004
1005 cancel_delayed_work(&priv->assoc_work);
1006 destroy_workqueue(priv->assoc_thread);
1007
1008 if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
1009 adapter->psmode = WLAN802_11POWERMODECAM;
1010 libertas_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1011 }
1012
1013 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1014 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1015 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1016
1017 adapter->surpriseremoved = 1;
1018
1019 /* Stop the thread servicing the interrupts */
1020 kthread_stop(priv->main_thread);
1021
1022 libertas_debugfs_remove_one(priv);
1023
1024 lbs_deb_net("free adapter\n");
1025 libertas_free_adapter(priv);
1026
1027 lbs_deb_net("unregister finish\n");
1028
1029 priv->dev = NULL;
1030 free_netdev(dev);
1031
1032 out:
1033 lbs_deb_leave(LBS_DEB_NET);
1034 return 0;
1035 }
1036 EXPORT_SYMBOL_GPL(libertas_remove_card);
1037
1038
1039 void libertas_remove_mesh(wlan_private *priv)
1040 {
1041 struct net_device *mesh_dev;
1042
1043 lbs_deb_enter(LBS_DEB_NET);
1044
1045 if (!priv)
1046 goto out;
1047
1048 mesh_dev = priv->mesh_dev;
1049
1050 netif_stop_queue(mesh_dev);
1051 netif_carrier_off(priv->mesh_dev);
1052
1053 device_remove_file(&(mesh_dev->dev), &dev_attr_anycast_mask);
1054 unregister_netdev(mesh_dev);
1055
1056 priv->mesh_dev = NULL ;
1057 free_netdev(mesh_dev);
1058
1059 out:
1060 lbs_deb_leave(LBS_DEB_NET);
1061 }
1062 EXPORT_SYMBOL_GPL(libertas_remove_mesh);
1063
1064 /**
1065 * @brief This function finds the CFP in
1066 * region_cfp_table based on region and band parameter.
1067 *
1068 * @param region The region code
1069 * @param band The band
1070 * @param cfp_no A pointer to CFP number
1071 * @return A pointer to CFP
1072 */
1073 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1074 {
1075 int i, end;
1076
1077 lbs_deb_enter(LBS_DEB_MAIN);
1078
1079 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1080
1081 for (i = 0; i < end ; i++) {
1082 lbs_deb_main("region_cfp_table[i].region=%d\n",
1083 region_cfp_table[i].region);
1084 if (region_cfp_table[i].region == region) {
1085 *cfp_no = region_cfp_table[i].cfp_no_BG;
1086 lbs_deb_leave(LBS_DEB_MAIN);
1087 return region_cfp_table[i].cfp_BG;
1088 }
1089 }
1090
1091 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1092 return NULL;
1093 }
1094
1095 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1096 {
1097 wlan_adapter *adapter = priv->adapter;
1098 int ret = 0;
1099 int i = 0;
1100
1101 struct chan_freq_power *cfp;
1102 int cfp_no;
1103
1104 lbs_deb_enter(LBS_DEB_MAIN);
1105
1106 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1107
1108 {
1109 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1110 if (cfp != NULL) {
1111 adapter->region_channel[i].nrcfp = cfp_no;
1112 adapter->region_channel[i].CFP = cfp;
1113 } else {
1114 lbs_deb_main("wrong region code %#x in band B/G\n",
1115 region);
1116 ret = -1;
1117 goto out;
1118 }
1119 adapter->region_channel[i].valid = 1;
1120 adapter->region_channel[i].region = region;
1121 adapter->region_channel[i].band = band;
1122 i++;
1123 }
1124 out:
1125 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1126 return ret;
1127 }
1128
1129 /**
1130 * @brief This function handles the interrupt. it will change PS
1131 * state if applicable. it will wake up main_thread to handle
1132 * the interrupt event as well.
1133 *
1134 * @param dev A pointer to net_device structure
1135 * @return n/a
1136 */
1137 void libertas_interrupt(struct net_device *dev)
1138 {
1139 wlan_private *priv = dev->priv;
1140
1141 lbs_deb_enter(LBS_DEB_THREAD);
1142
1143 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1144 priv->adapter->intcounter);
1145
1146 priv->adapter->intcounter++;
1147
1148 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1149 priv->adapter->psstate = PS_STATE_AWAKE;
1150 netif_wake_queue(dev);
1151 netif_wake_queue(priv->mesh_dev);
1152 }
1153
1154 wake_up_interruptible(&priv->waitq);
1155
1156 lbs_deb_leave(LBS_DEB_THREAD);
1157 }
1158 EXPORT_SYMBOL_GPL(libertas_interrupt);
1159
1160 int libertas_reset_device(wlan_private *priv)
1161 {
1162 int ret;
1163
1164 lbs_deb_enter(LBS_DEB_MAIN);
1165 ret = libertas_prepare_and_send_command(priv, CMD_802_11_RESET,
1166 CMD_ACT_HALT, 0, 0, NULL);
1167 msleep_interruptible(10);
1168
1169 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1170 return ret;
1171 }
1172 EXPORT_SYMBOL_GPL(libertas_reset_device);
1173
1174 static int libertas_init_module(void)
1175 {
1176 lbs_deb_enter(LBS_DEB_MAIN);
1177 libertas_debugfs_init();
1178 lbs_deb_leave(LBS_DEB_MAIN);
1179 return 0;
1180 }
1181
1182 static void libertas_exit_module(void)
1183 {
1184 lbs_deb_enter(LBS_DEB_MAIN);
1185
1186 libertas_debugfs_remove();
1187
1188 lbs_deb_leave(LBS_DEB_MAIN);
1189 }
1190
1191 module_init(libertas_init_module);
1192 module_exit(libertas_exit_module);
1193
1194 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1195 MODULE_AUTHOR("Marvell International Ltd.");
1196 MODULE_LICENSE("GPL");
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