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libertas: handle command timeout in main thread instead of directly in timer
[linux-2.6/cjktty.git] / drivers / net / wireless / libertas / main.c
blob9677b0d77160b504b17c3f2fe71ff2c194fd85e6
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/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13
14 #include <net/iw_handler.h>
15 #include <net/ieee80211.h>
16
17 #include "host.h"
18 #include "decl.h"
19 #include "dev.h"
20 #include "wext.h"
21 #include "debugfs.h"
22 #include "assoc.h"
23 #include "join.h"
24 #include "cmd.h"
25
26 #define DRIVER_RELEASE_VERSION "323.p0"
27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
28 #ifdef DEBUG
29 "-dbg"
30 #endif
31 "";
32
33
34 /* Module parameters */
35 unsigned int lbs_debug;
36 EXPORT_SYMBOL_GPL(lbs_debug);
37 module_param_named(libertas_debug, lbs_debug, int, 0644);
38
39
40 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
41 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
42 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
43 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
44 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
45
46 /* Format { channel, frequency (MHz), maxtxpower } */
47 /* band: 'B/G', region: USA FCC/Canada IC */
48 static struct chan_freq_power channel_freq_power_US_BG[] = {
49 {1, 2412, LBS_TX_PWR_US_DEFAULT},
50 {2, 2417, LBS_TX_PWR_US_DEFAULT},
51 {3, 2422, LBS_TX_PWR_US_DEFAULT},
52 {4, 2427, LBS_TX_PWR_US_DEFAULT},
53 {5, 2432, LBS_TX_PWR_US_DEFAULT},
54 {6, 2437, LBS_TX_PWR_US_DEFAULT},
55 {7, 2442, LBS_TX_PWR_US_DEFAULT},
56 {8, 2447, LBS_TX_PWR_US_DEFAULT},
57 {9, 2452, LBS_TX_PWR_US_DEFAULT},
58 {10, 2457, LBS_TX_PWR_US_DEFAULT},
59 {11, 2462, LBS_TX_PWR_US_DEFAULT}
60 };
61
62 /* band: 'B/G', region: Europe ETSI */
63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
64 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
65 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
66 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
67 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
68 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
69 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
70 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
71 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
72 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
73 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
74 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
75 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
76 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
77 };
78
79 /* band: 'B/G', region: Spain */
80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
81 {10, 2457, LBS_TX_PWR_DEFAULT},
82 {11, 2462, LBS_TX_PWR_DEFAULT}
83 };
84
85 /* band: 'B/G', region: France */
86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
87 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
89 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
90 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
91 };
92
93 /* band: 'B/G', region: Japan */
94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
95 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
96 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
97 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
98 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
99 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
100 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
101 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
102 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
103 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
104 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
105 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
106 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
107 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
108 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
109 };
110
111 /**
112 * the structure for channel, frequency and power
113 */
114 struct region_cfp_table {
115 u8 region;
116 struct chan_freq_power *cfp_BG;
117 int cfp_no_BG;
118 };
119
120 /**
121 * the structure for the mapping between region and CFP
122 */
123 static struct region_cfp_table region_cfp_table[] = {
124 {0x10, /*US FCC */
125 channel_freq_power_US_BG,
126 ARRAY_SIZE(channel_freq_power_US_BG),
127 }
128 ,
129 {0x20, /*CANADA IC */
130 channel_freq_power_US_BG,
131 ARRAY_SIZE(channel_freq_power_US_BG),
132 }
133 ,
134 {0x30, /*EU*/ channel_freq_power_EU_BG,
135 ARRAY_SIZE(channel_freq_power_EU_BG),
136 }
137 ,
138 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
139 ARRAY_SIZE(channel_freq_power_SPN_BG),
140 }
141 ,
142 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
143 ARRAY_SIZE(channel_freq_power_FR_BG),
144 }
145 ,
146 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
147 ARRAY_SIZE(channel_freq_power_JPN_BG),
148 }
149 ,
150 /*Add new region here */
151 };
152
153 /**
154 * the table to keep region code
155 */
156 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
157 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
158
159 /**
160 * 802.11b/g supported bitrates (in 500Kb/s units)
161 */
162 u8 lbs_bg_rates[MAX_RATES] =
163 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
164 0x00, 0x00 };
165
166 /**
167 * FW rate table. FW refers to rates by their index in this table, not by the
168 * rate value itself. Values of 0x00 are
169 * reserved positions.
170 */
171 static u8 fw_data_rates[MAX_RATES] =
172 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
173 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
174 };
175
176 /**
177 * @brief use index to get the data rate
178 *
179 * @param idx The index of data rate
180 * @return data rate or 0
181 */
182 u32 lbs_fw_index_to_data_rate(u8 idx)
183 {
184 if (idx >= sizeof(fw_data_rates))
185 idx = 0;
186 return fw_data_rates[idx];
187 }
188
189 /**
190 * @brief use rate to get the index
191 *
192 * @param rate data rate
193 * @return index or 0
194 */
195 u8 lbs_data_rate_to_fw_index(u32 rate)
196 {
197 u8 i;
198
199 if (!rate)
200 return 0;
201
202 for (i = 0; i < sizeof(fw_data_rates); i++) {
203 if (rate == fw_data_rates[i])
204 return i;
205 }
206 return 0;
207 }
208
209 /**
210 * Attributes exported through sysfs
211 */
212
213 /**
214 * @brief Get function for sysfs attribute anycast_mask
215 */
216 static ssize_t lbs_anycast_get(struct device *dev,
217 struct device_attribute *attr, char * buf)
218 {
219 struct lbs_private *priv = to_net_dev(dev)->priv;
220 struct cmd_ds_mesh_access mesh_access;
221 int ret;
222
223 memset(&mesh_access, 0, sizeof(mesh_access));
224
225 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
226 if (ret)
227 return ret;
228
229 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
230 }
231
232 /**
233 * @brief Set function for sysfs attribute anycast_mask
234 */
235 static ssize_t lbs_anycast_set(struct device *dev,
236 struct device_attribute *attr, const char * buf, size_t count)
237 {
238 struct lbs_private *priv = to_net_dev(dev)->priv;
239 struct cmd_ds_mesh_access mesh_access;
240 uint32_t datum;
241 int ret;
242
243 memset(&mesh_access, 0, sizeof(mesh_access));
244 sscanf(buf, "%x", &datum);
245 mesh_access.data[0] = cpu_to_le32(datum);
246
247 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
248 if (ret)
249 return ret;
250
251 return strlen(buf);
252 }
253
254 static int lbs_add_rtap(struct lbs_private *priv);
255 static void lbs_remove_rtap(struct lbs_private *priv);
256 static int lbs_add_mesh(struct lbs_private *priv);
257 static void lbs_remove_mesh(struct lbs_private *priv);
258
259
260 /**
261 * Get function for sysfs attribute rtap
262 */
263 static ssize_t lbs_rtap_get(struct device *dev,
264 struct device_attribute *attr, char * buf)
265 {
266 struct lbs_private *priv = to_net_dev(dev)->priv;
267 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
268 }
269
270 /**
271 * Set function for sysfs attribute rtap
272 */
273 static ssize_t lbs_rtap_set(struct device *dev,
274 struct device_attribute *attr, const char * buf, size_t count)
275 {
276 int monitor_mode;
277 struct lbs_private *priv = to_net_dev(dev)->priv;
278
279 sscanf(buf, "%x", &monitor_mode);
280 if (monitor_mode != LBS_MONITOR_OFF) {
281 if(priv->monitormode == monitor_mode)
282 return strlen(buf);
283 if (priv->monitormode == LBS_MONITOR_OFF) {
284 if (priv->infra_open || priv->mesh_open)
285 return -EBUSY;
286 if (priv->mode == IW_MODE_INFRA)
287 lbs_send_deauthentication(priv);
288 else if (priv->mode == IW_MODE_ADHOC)
289 lbs_stop_adhoc_network(priv);
290 lbs_add_rtap(priv);
291 }
292 priv->monitormode = monitor_mode;
293 }
294
295 else {
296 if (priv->monitormode == LBS_MONITOR_OFF)
297 return strlen(buf);
298 priv->monitormode = LBS_MONITOR_OFF;
299 lbs_remove_rtap(priv);
300
301 if (priv->currenttxskb) {
302 dev_kfree_skb_any(priv->currenttxskb);
303 priv->currenttxskb = NULL;
304 }
305
306 /* Wake queues, command thread, etc. */
307 lbs_host_to_card_done(priv);
308 }
309
310 lbs_prepare_and_send_command(priv,
311 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
312 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
313 return strlen(buf);
314 }
315
316 /**
317 * lbs_rtap attribute to be exported per ethX interface
318 * through sysfs (/sys/class/net/ethX/lbs_rtap)
319 */
320 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
321
322 /**
323 * Get function for sysfs attribute mesh
324 */
325 static ssize_t lbs_mesh_get(struct device *dev,
326 struct device_attribute *attr, char * buf)
327 {
328 struct lbs_private *priv = to_net_dev(dev)->priv;
329 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
330 }
331
332 /**
333 * Set function for sysfs attribute mesh
334 */
335 static ssize_t lbs_mesh_set(struct device *dev,
336 struct device_attribute *attr, const char * buf, size_t count)
337 {
338 struct lbs_private *priv = to_net_dev(dev)->priv;
339 int enable;
340 int ret;
341
342 sscanf(buf, "%x", &enable);
343 enable = !!enable;
344 if (enable == !!priv->mesh_dev)
345 return count;
346
347 ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
348 if (ret)
349 return ret;
350
351 if (enable)
352 lbs_add_mesh(priv);
353 else
354 lbs_remove_mesh(priv);
355
356 return count;
357 }
358
359 /**
360 * lbs_mesh attribute to be exported per ethX interface
361 * through sysfs (/sys/class/net/ethX/lbs_mesh)
362 */
363 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
364
365 /**
366 * anycast_mask attribute to be exported per mshX interface
367 * through sysfs (/sys/class/net/mshX/anycast_mask)
368 */
369 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
370
371 static struct attribute *lbs_mesh_sysfs_entries[] = {
372 &dev_attr_anycast_mask.attr,
373 NULL,
374 };
375
376 static struct attribute_group lbs_mesh_attr_group = {
377 .attrs = lbs_mesh_sysfs_entries,
378 };
379
380 /**
381 * @brief This function opens the ethX or mshX interface
382 *
383 * @param dev A pointer to net_device structure
384 * @return 0 or -EBUSY if monitor mode active
385 */
386 static int lbs_dev_open(struct net_device *dev)
387 {
388 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
389 int ret = 0;
390
391 spin_lock_irq(&priv->driver_lock);
392
393 if (priv->monitormode != LBS_MONITOR_OFF) {
394 ret = -EBUSY;
395 goto out;
396 }
397
398 if (dev == priv->mesh_dev) {
399 priv->mesh_open = 1;
400 priv->mesh_connect_status = LBS_CONNECTED;
401 netif_carrier_on(dev);
402 } else {
403 priv->infra_open = 1;
404
405 if (priv->connect_status == LBS_CONNECTED)
406 netif_carrier_on(dev);
407 else
408 netif_carrier_off(dev);
409 }
410
411 if (!priv->tx_pending_len)
412 netif_wake_queue(dev);
413 out:
414
415 spin_unlock_irq(&priv->driver_lock);
416 return ret;
417 }
418
419 /**
420 * @brief This function closes the mshX interface
421 *
422 * @param dev A pointer to net_device structure
423 * @return 0
424 */
425 static int lbs_mesh_stop(struct net_device *dev)
426 {
427 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
428
429 spin_lock_irq(&priv->driver_lock);
430
431 priv->mesh_open = 0;
432 priv->mesh_connect_status = LBS_DISCONNECTED;
433
434 netif_stop_queue(dev);
435 netif_carrier_off(dev);
436
437 spin_unlock_irq(&priv->driver_lock);
438 return 0;
439 }
440
441 /**
442 * @brief This function closes the ethX interface
443 *
444 * @param dev A pointer to net_device structure
445 * @return 0
446 */
447 static int lbs_eth_stop(struct net_device *dev)
448 {
449 struct lbs_private *priv = (struct lbs_private *) dev->priv;
450
451 spin_lock_irq(&priv->driver_lock);
452
453 priv->infra_open = 0;
454
455 netif_stop_queue(dev);
456
457 spin_unlock_irq(&priv->driver_lock);
458 return 0;
459 }
460
461 static void lbs_tx_timeout(struct net_device *dev)
462 {
463 struct lbs_private *priv = (struct lbs_private *) dev->priv;
464
465 lbs_deb_enter(LBS_DEB_TX);
466
467 lbs_pr_err("tx watch dog timeout\n");
468
469 dev->trans_start = jiffies;
470
471 if (priv->currenttxskb) {
472 priv->eventcause = 0x01000000;
473 lbs_send_tx_feedback(priv);
474 }
475 /* XX: Shouldn't we also call into the hw-specific driver
476 to kick it somehow? */
477 lbs_host_to_card_done(priv);
478
479 lbs_deb_leave(LBS_DEB_TX);
480 }
481
482 void lbs_host_to_card_done(struct lbs_private *priv)
483 {
484 unsigned long flags;
485
486 spin_lock_irqsave(&priv->driver_lock, flags);
487
488 priv->dnld_sent = DNLD_RES_RECEIVED;
489
490 /* Wake main thread if commands are pending */
491 if (!priv->cur_cmd || priv->tx_pending_len > 0)
492 wake_up_interruptible(&priv->waitq);
493
494 spin_unlock_irqrestore(&priv->driver_lock, flags);
495 }
496 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
497
498 /**
499 * @brief This function returns the network statistics
500 *
501 * @param dev A pointer to struct lbs_private structure
502 * @return A pointer to net_device_stats structure
503 */
504 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
505 {
506 struct lbs_private *priv = (struct lbs_private *) dev->priv;
507
508 return &priv->stats;
509 }
510
511 static int lbs_set_mac_address(struct net_device *dev, void *addr)
512 {
513 int ret = 0;
514 struct lbs_private *priv = (struct lbs_private *) dev->priv;
515 struct sockaddr *phwaddr = addr;
516
517 lbs_deb_enter(LBS_DEB_NET);
518
519 /* In case it was called from the mesh device */
520 dev = priv->dev ;
521
522 memset(priv->current_addr, 0, ETH_ALEN);
523
524 /* dev->dev_addr is 8 bytes */
525 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
526
527 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
528 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
529
530 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
531 CMD_ACT_SET,
532 CMD_OPTION_WAITFORRSP, 0, NULL);
533
534 if (ret) {
535 lbs_deb_net("set MAC address failed\n");
536 ret = -1;
537 goto done;
538 }
539
540 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
541 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
542 if (priv->mesh_dev)
543 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
544
545 done:
546 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
547 return ret;
548 }
549
550 static int lbs_copy_multicast_address(struct lbs_private *priv,
551 struct net_device *dev)
552 {
553 int i = 0;
554 struct dev_mc_list *mcptr = dev->mc_list;
555
556 for (i = 0; i < dev->mc_count; i++) {
557 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
558 mcptr = mcptr->next;
559 }
560
561 return i;
562
563 }
564
565 static void lbs_set_multicast_list(struct net_device *dev)
566 {
567 struct lbs_private *priv = dev->priv;
568 int oldpacketfilter;
569 DECLARE_MAC_BUF(mac);
570
571 lbs_deb_enter(LBS_DEB_NET);
572
573 oldpacketfilter = priv->currentpacketfilter;
574
575 if (dev->flags & IFF_PROMISC) {
576 lbs_deb_net("enable promiscuous mode\n");
577 priv->currentpacketfilter |=
578 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
579 priv->currentpacketfilter &=
580 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
581 CMD_ACT_MAC_MULTICAST_ENABLE);
582 } else {
583 /* Multicast */
584 priv->currentpacketfilter &=
585 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
586
587 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
588 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
589 lbs_deb_net( "enabling all multicast\n");
590 priv->currentpacketfilter |=
591 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
592 priv->currentpacketfilter &=
593 ~CMD_ACT_MAC_MULTICAST_ENABLE;
594 } else {
595 priv->currentpacketfilter &=
596 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
597
598 if (!dev->mc_count) {
599 lbs_deb_net("no multicast addresses, "
600 "disabling multicast\n");
601 priv->currentpacketfilter &=
602 ~CMD_ACT_MAC_MULTICAST_ENABLE;
603 } else {
604 int i;
605
606 priv->currentpacketfilter |=
607 CMD_ACT_MAC_MULTICAST_ENABLE;
608
609 priv->nr_of_multicastmacaddr =
610 lbs_copy_multicast_address(priv, dev);
611
612 lbs_deb_net("multicast addresses: %d\n",
613 dev->mc_count);
614
615 for (i = 0; i < dev->mc_count; i++) {
616 lbs_deb_net("Multicast address %d:%s\n",
617 i, print_mac(mac,
618 priv->multicastlist[i]));
619 }
620 /* send multicast addresses to firmware */
621 lbs_prepare_and_send_command(priv,
622 CMD_MAC_MULTICAST_ADR,
623 CMD_ACT_SET, 0, 0,
624 NULL);
625 }
626 }
627 }
628
629 if (priv->currentpacketfilter != oldpacketfilter) {
630 lbs_set_mac_packet_filter(priv);
631 }
632
633 lbs_deb_leave(LBS_DEB_NET);
634 }
635
636 /**
637 * @brief This function handles the major jobs in the LBS driver.
638 * It handles all events generated by firmware, RX data received
639 * from firmware and TX data sent from kernel.
640 *
641 * @param data A pointer to lbs_thread structure
642 * @return 0
643 */
644 static int lbs_thread(void *data)
645 {
646 struct net_device *dev = data;
647 struct lbs_private *priv = dev->priv;
648 wait_queue_t wait;
649 u8 ireg = 0;
650
651 lbs_deb_enter(LBS_DEB_THREAD);
652
653 init_waitqueue_entry(&wait, current);
654
655 for (;;) {
656 int shouldsleep;
657
658 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
659 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
660
661 add_wait_queue(&priv->waitq, &wait);
662 set_current_state(TASK_INTERRUPTIBLE);
663 spin_lock_irq(&priv->driver_lock);
664
665 if (kthread_should_stop())
666 shouldsleep = 0; /* Bye */
667 else if (priv->surpriseremoved)
668 shouldsleep = 1; /* We need to wait until we're _told_ to die */
669 else if (priv->psstate == PS_STATE_SLEEP)
670 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
671 else if (priv->intcounter)
672 shouldsleep = 0; /* Interrupt pending. Deal with it now */
673 else if (priv->cmd_timed_out)
674 shouldsleep = 0; /* Command timed out. Recover */
675 else if (!priv->fw_ready)
676 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
677 else if (priv->dnld_sent)
678 shouldsleep = 1; /* Something is en route to the device already */
679 else if (priv->tx_pending_len > 0)
680 shouldsleep = 0; /* We've a packet to send */
681 else if (priv->cur_cmd)
682 shouldsleep = 1; /* Can't send a command; one already running */
683 else if (!list_empty(&priv->cmdpendingq))
684 shouldsleep = 0; /* We have a command to send */
685 else
686 shouldsleep = 1; /* No command */
687
688 if (shouldsleep) {
689 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
690 priv->connect_status, priv->intcounter,
691 priv->psmode, priv->psstate);
692 spin_unlock_irq(&priv->driver_lock);
693 schedule();
694 } else
695 spin_unlock_irq(&priv->driver_lock);
696
697 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
698 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
699
700 set_current_state(TASK_RUNNING);
701 remove_wait_queue(&priv->waitq, &wait);
702
703 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
704 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
705
706 if (kthread_should_stop()) {
707 lbs_deb_thread("main-thread: break from main thread\n");
708 break;
709 }
710
711 if (priv->surpriseremoved) {
712 lbs_deb_thread("adapter removed; waiting to die...\n");
713 continue;
714 }
715
716 spin_lock_irq(&priv->driver_lock);
717
718 if (priv->intcounter) {
719 u8 int_status;
720
721 priv->intcounter = 0;
722 int_status = priv->hw_get_int_status(priv, &ireg);
723
724 if (int_status) {
725 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
726 spin_unlock_irq(&priv->driver_lock);
727 continue;
728 }
729 priv->hisregcpy |= ireg;
730 }
731
732 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
733 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
734
735 /* command response? */
736 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
737 lbs_deb_thread("main-thread: cmd response ready\n");
738
739 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
740 spin_unlock_irq(&priv->driver_lock);
741 lbs_process_rx_command(priv);
742 spin_lock_irq(&priv->driver_lock);
743 }
744
745 if (priv->cmd_timed_out && priv->cur_cmd) {
746 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
747
748 if (++priv->nr_retries > 10) {
749 lbs_pr_info("Excessive timeouts submitting command %x\n",
750 le16_to_cpu(cmdnode->cmdbuf->command));
751 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
752 priv->nr_retries = 0;
753 } else {
754 priv->cur_cmd = NULL;
755 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
756 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
757
758 /* Stick it back at the _top_ of the pending queue
759 for immediate resubmission */
760 list_add(&cmdnode->list, &priv->cmdpendingq);
761 }
762 }
763 priv->cmd_timed_out = 0;
764
765 /* Any Card Event */
766 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
767 lbs_deb_thread("main-thread: Card Event Activity\n");
768
769 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
770
771 if (priv->hw_read_event_cause(priv)) {
772 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
773 spin_unlock_irq(&priv->driver_lock);
774 continue;
775 }
776 spin_unlock_irq(&priv->driver_lock);
777 lbs_process_event(priv);
778 } else
779 spin_unlock_irq(&priv->driver_lock);
780
781 if (!priv->fw_ready)
782 continue;
783
784 /* Check if we need to confirm Sleep Request received previously */
785 if (priv->psstate == PS_STATE_PRE_SLEEP &&
786 !priv->dnld_sent && !priv->cur_cmd) {
787 if (priv->connect_status == LBS_CONNECTED) {
788 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
789 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
790
791 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
792 } else {
793 /* workaround for firmware sending
794 * deauth/linkloss event immediately
795 * after sleep request; remove this
796 * after firmware fixes it
797 */
798 priv->psstate = PS_STATE_AWAKE;
799 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
800 }
801 }
802
803 /* The PS state is changed during processing of Sleep Request
804 * event above
805 */
806 if ((priv->psstate == PS_STATE_SLEEP) ||
807 (priv->psstate == PS_STATE_PRE_SLEEP))
808 continue;
809
810 /* Execute the next command */
811 if (!priv->dnld_sent && !priv->cur_cmd)
812 lbs_execute_next_command(priv);
813
814 /* Wake-up command waiters which can't sleep in
815 * lbs_prepare_and_send_command
816 */
817 if (!list_empty(&priv->cmdpendingq))
818 wake_up_all(&priv->cmd_pending);
819
820 spin_lock_irq(&priv->driver_lock);
821 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
822 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
823 priv->tx_pending_buf,
824 priv->tx_pending_len);
825 if (ret) {
826 lbs_deb_tx("host_to_card failed %d\n", ret);
827 priv->dnld_sent = DNLD_RES_RECEIVED;
828 }
829 priv->tx_pending_len = 0;
830 if (!priv->currenttxskb) {
831 /* We can wake the queues immediately if we aren't
832 waiting for TX feedback */
833 if (priv->connect_status == LBS_CONNECTED)
834 netif_wake_queue(priv->dev);
835 if (priv->mesh_dev &&
836 priv->mesh_connect_status == LBS_CONNECTED)
837 netif_wake_queue(priv->mesh_dev);
838 }
839 }
840 spin_unlock_irq(&priv->driver_lock);
841 }
842
843 del_timer(&priv->command_timer);
844 wake_up_all(&priv->cmd_pending);
845
846 lbs_deb_leave(LBS_DEB_THREAD);
847 return 0;
848 }
849
850 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
851 struct cmd_header *cmd)
852 {
853 lbs_deb_fw("HOST_SLEEP_ACTIVATE succeeded\n");
854
855 netif_device_detach(priv->dev);
856 if (priv->mesh_dev)
857 netif_device_detach(priv->mesh_dev);
858
859 priv->fw_ready = 0;
860 return 0;
861 }
862
863
864 int lbs_suspend(struct lbs_private *priv)
865 {
866 struct cmd_header cmd;
867 int ret;
868
869 if (priv->wol_criteria == 0xffffffff) {
870 lbs_pr_info("Suspend attempt without configuring wake params!\n");
871 return -EINVAL;
872 }
873
874 memset(&cmd, 0, sizeof(cmd));
875
876 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
877 sizeof(cmd), lbs_suspend_callback, 0);
878 if (ret)
879 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
880
881 return ret;
882 }
883 EXPORT_SYMBOL_GPL(lbs_suspend);
884
885 int lbs_resume(struct lbs_private *priv)
886 {
887 priv->fw_ready = 1;
888
889 /* Firmware doesn't seem to give us RX packets any more
890 until we send it some command. Might as well update */
891 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
892 0, 0, NULL);
893
894 netif_device_attach(priv->dev);
895 if (priv->mesh_dev)
896 netif_device_attach(priv->mesh_dev);
897
898 return 0;
899 }
900 EXPORT_SYMBOL_GPL(lbs_resume);
901
902 /**
903 * @brief This function downloads firmware image, gets
904 * HW spec from firmware and set basic parameters to
905 * firmware.
906 *
907 * @param priv A pointer to struct lbs_private structure
908 * @return 0 or -1
909 */
910 static int lbs_setup_firmware(struct lbs_private *priv)
911 {
912 int ret = -1;
913
914 lbs_deb_enter(LBS_DEB_FW);
915
916 /*
917 * Read MAC address from HW
918 */
919 memset(priv->current_addr, 0xff, ETH_ALEN);
920 ret = lbs_update_hw_spec(priv);
921 if (ret) {
922 ret = -1;
923 goto done;
924 }
925
926 lbs_set_mac_packet_filter(priv);
927
928 ret = lbs_get_data_rate(priv);
929 if (ret < 0) {
930 ret = -1;
931 goto done;
932 }
933
934 ret = 0;
935 done:
936 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
937 return ret;
938 }
939
940 /**
941 * This function handles the timeout of command sending.
942 * It will re-send the same command again.
943 */
944 static void command_timer_fn(unsigned long data)
945 {
946 struct lbs_private *priv = (struct lbs_private *)data;
947 unsigned long flags;
948
949 spin_lock_irqsave(&priv->driver_lock, flags);
950
951 if (!priv->cur_cmd) {
952 lbs_pr_info("Command timer expired; no pending command\n");
953 goto out;
954 }
955
956 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
957
958 priv->cmd_timed_out = 1;
959 wake_up_interruptible(&priv->waitq);
960 out:
961 spin_unlock_irqrestore(&priv->driver_lock, flags);
962 }
963
964 static int lbs_init_adapter(struct lbs_private *priv)
965 {
966 size_t bufsize;
967 int i, ret = 0;
968
969 /* Allocate buffer to store the BSSID list */
970 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
971 priv->networks = kzalloc(bufsize, GFP_KERNEL);
972 if (!priv->networks) {
973 lbs_pr_err("Out of memory allocating beacons\n");
974 ret = -1;
975 goto out;
976 }
977
978 /* Initialize scan result lists */
979 INIT_LIST_HEAD(&priv->network_free_list);
980 INIT_LIST_HEAD(&priv->network_list);
981 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
982 list_add_tail(&priv->networks[i].list,
983 &priv->network_free_list);
984 }
985
986 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
987 priv->lbs_ps_confirm_sleep.command =
988 cpu_to_le16(CMD_802_11_PS_MODE);
989 priv->lbs_ps_confirm_sleep.size =
990 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
991 priv->lbs_ps_confirm_sleep.action =
992 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
993
994 memset(priv->current_addr, 0xff, ETH_ALEN);
995
996 priv->connect_status = LBS_DISCONNECTED;
997 priv->mesh_connect_status = LBS_DISCONNECTED;
998 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
999 priv->mode = IW_MODE_INFRA;
1000 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1001 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1002 priv->radioon = RADIO_ON;
1003 priv->auto_rate = 1;
1004 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1005 priv->psmode = LBS802_11POWERMODECAM;
1006 priv->psstate = PS_STATE_FULL_POWER;
1007
1008 mutex_init(&priv->lock);
1009
1010 setup_timer(&priv->command_timer, command_timer_fn,
1011 (unsigned long)priv);
1012
1013 INIT_LIST_HEAD(&priv->cmdfreeq);
1014 INIT_LIST_HEAD(&priv->cmdpendingq);
1015
1016 spin_lock_init(&priv->driver_lock);
1017 init_waitqueue_head(&priv->cmd_pending);
1018
1019 /* Allocate the command buffers */
1020 if (lbs_allocate_cmd_buffer(priv)) {
1021 lbs_pr_err("Out of memory allocating command buffers\n");
1022 ret = -1;
1023 }
1024
1025 out:
1026 return ret;
1027 }
1028
1029 static void lbs_free_adapter(struct lbs_private *priv)
1030 {
1031 lbs_deb_fw("free command buffer\n");
1032 lbs_free_cmd_buffer(priv);
1033
1034 lbs_deb_fw("free command_timer\n");
1035 del_timer(&priv->command_timer);
1036
1037 lbs_deb_fw("free scan results table\n");
1038 kfree(priv->networks);
1039 priv->networks = NULL;
1040 }
1041
1042 /**
1043 * @brief This function adds the card. it will probe the
1044 * card, allocate the lbs_priv and initialize the device.
1045 *
1046 * @param card A pointer to card
1047 * @return A pointer to struct lbs_private structure
1048 */
1049 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1050 {
1051 struct net_device *dev = NULL;
1052 struct lbs_private *priv = NULL;
1053
1054 lbs_deb_enter(LBS_DEB_NET);
1055
1056 /* Allocate an Ethernet device and register it */
1057 dev = alloc_etherdev(sizeof(struct lbs_private));
1058 if (!dev) {
1059 lbs_pr_err("init ethX device failed\n");
1060 goto done;
1061 }
1062 priv = dev->priv;
1063
1064 if (lbs_init_adapter(priv)) {
1065 lbs_pr_err("failed to initialize adapter structure.\n");
1066 goto err_init_adapter;
1067 }
1068
1069 priv->dev = dev;
1070 priv->card = card;
1071 priv->mesh_open = 0;
1072 priv->infra_open = 0;
1073
1074 /* Setup the OS Interface to our functions */
1075 dev->open = lbs_dev_open;
1076 dev->hard_start_xmit = lbs_hard_start_xmit;
1077 dev->stop = lbs_eth_stop;
1078 dev->set_mac_address = lbs_set_mac_address;
1079 dev->tx_timeout = lbs_tx_timeout;
1080 dev->get_stats = lbs_get_stats;
1081 dev->watchdog_timeo = 5 * HZ;
1082 dev->ethtool_ops = &lbs_ethtool_ops;
1083 #ifdef WIRELESS_EXT
1084 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1085 #endif
1086 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1087 dev->set_multicast_list = lbs_set_multicast_list;
1088
1089 SET_NETDEV_DEV(dev, dmdev);
1090
1091 priv->rtap_net_dev = NULL;
1092
1093 lbs_deb_thread("Starting main thread...\n");
1094 init_waitqueue_head(&priv->waitq);
1095 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1096 if (IS_ERR(priv->main_thread)) {
1097 lbs_deb_thread("Error creating main thread.\n");
1098 goto err_init_adapter;
1099 }
1100
1101 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1102 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1103 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1104 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1105
1106 sprintf(priv->mesh_ssid, "mesh");
1107 priv->mesh_ssid_len = 4;
1108
1109 priv->wol_criteria = 0xffffffff;
1110 priv->wol_gpio = 0xff;
1111
1112 goto done;
1113
1114 err_init_adapter:
1115 lbs_free_adapter(priv);
1116 free_netdev(dev);
1117 priv = NULL;
1118
1119 done:
1120 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1121 return priv;
1122 }
1123 EXPORT_SYMBOL_GPL(lbs_add_card);
1124
1125
1126 int lbs_remove_card(struct lbs_private *priv)
1127 {
1128 struct net_device *dev = priv->dev;
1129 union iwreq_data wrqu;
1130
1131 lbs_deb_enter(LBS_DEB_MAIN);
1132
1133 lbs_remove_mesh(priv);
1134 lbs_remove_rtap(priv);
1135
1136 dev = priv->dev;
1137
1138 cancel_delayed_work(&priv->scan_work);
1139 cancel_delayed_work(&priv->assoc_work);
1140 destroy_workqueue(priv->work_thread);
1141
1142 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1143 priv->psmode = LBS802_11POWERMODECAM;
1144 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1145 }
1146
1147 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1148 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1149 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1150
1151 /* Stop the thread servicing the interrupts */
1152 priv->surpriseremoved = 1;
1153 kthread_stop(priv->main_thread);
1154
1155 lbs_free_adapter(priv);
1156
1157 priv->dev = NULL;
1158 free_netdev(dev);
1159
1160 lbs_deb_leave(LBS_DEB_MAIN);
1161 return 0;
1162 }
1163 EXPORT_SYMBOL_GPL(lbs_remove_card);
1164
1165
1166 int lbs_start_card(struct lbs_private *priv)
1167 {
1168 struct net_device *dev = priv->dev;
1169 int ret = -1;
1170
1171 lbs_deb_enter(LBS_DEB_MAIN);
1172
1173 /* poke the firmware */
1174 ret = lbs_setup_firmware(priv);
1175 if (ret)
1176 goto done;
1177
1178 /* init 802.11d */
1179 lbs_init_11d(priv);
1180
1181 if (register_netdev(dev)) {
1182 lbs_pr_err("cannot register ethX device\n");
1183 goto done;
1184 }
1185 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1186 lbs_pr_err("cannot register lbs_rtap attribute\n");
1187
1188 /* Enable mesh, if supported, and work out which TLV it uses.
1189 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1190 0x100 + 37 is the official value used in 5.110.21.pXX
1191 but we check them in that order because 20.pXX doesn't
1192 give an error -- it just silently fails. */
1193
1194 /* 5.110.20.pXX firmware will fail the command if the channel
1195 doesn't match the existing channel. But only if the TLV
1196 is correct. If the channel is wrong, _BOTH_ versions will
1197 give an error to 0x100+291, and allow 0x100+37 to succeed.
1198 It's just that 5.110.20.pXX will not have done anything
1199 useful */
1200
1201 lbs_update_channel(priv);
1202 priv->mesh_tlv = 0x100 + 291;
1203 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1204 priv->mesh_tlv = 0x100 + 37;
1205 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1206 priv->mesh_tlv = 0;
1207 }
1208 if (priv->mesh_tlv) {
1209 lbs_add_mesh(priv);
1210
1211 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1212 lbs_pr_err("cannot register lbs_mesh attribute\n");
1213 }
1214
1215 lbs_debugfs_init_one(priv, dev);
1216
1217 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1218
1219 ret = 0;
1220
1221 done:
1222 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1223 return ret;
1224 }
1225 EXPORT_SYMBOL_GPL(lbs_start_card);
1226
1227
1228 int lbs_stop_card(struct lbs_private *priv)
1229 {
1230 struct net_device *dev = priv->dev;
1231 int ret = -1;
1232 struct cmd_ctrl_node *cmdnode;
1233 unsigned long flags;
1234
1235 lbs_deb_enter(LBS_DEB_MAIN);
1236
1237 netif_stop_queue(priv->dev);
1238 netif_carrier_off(priv->dev);
1239
1240 lbs_debugfs_remove_one(priv);
1241 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1242 if (priv->mesh_tlv)
1243 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1244
1245 /* Flush pending command nodes */
1246 spin_lock_irqsave(&priv->driver_lock, flags);
1247 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1248 cmdnode->result = -ENOENT;
1249 cmdnode->cmdwaitqwoken = 1;
1250 wake_up_interruptible(&cmdnode->cmdwait_q);
1251 }
1252 spin_unlock_irqrestore(&priv->driver_lock, flags);
1253
1254 unregister_netdev(dev);
1255
1256 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1257 return ret;
1258 }
1259 EXPORT_SYMBOL_GPL(lbs_stop_card);
1260
1261
1262 /**
1263 * @brief This function adds mshX interface
1264 *
1265 * @param priv A pointer to the struct lbs_private structure
1266 * @return 0 if successful, -X otherwise
1267 */
1268 static int lbs_add_mesh(struct lbs_private *priv)
1269 {
1270 struct net_device *mesh_dev = NULL;
1271 int ret = 0;
1272
1273 lbs_deb_enter(LBS_DEB_MESH);
1274
1275 /* Allocate a virtual mesh device */
1276 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1277 lbs_deb_mesh("init mshX device failed\n");
1278 ret = -ENOMEM;
1279 goto done;
1280 }
1281 mesh_dev->priv = priv;
1282 priv->mesh_dev = mesh_dev;
1283
1284 mesh_dev->open = lbs_dev_open;
1285 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1286 mesh_dev->stop = lbs_mesh_stop;
1287 mesh_dev->get_stats = lbs_get_stats;
1288 mesh_dev->set_mac_address = lbs_set_mac_address;
1289 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1290 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1291 sizeof(priv->dev->dev_addr));
1292
1293 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1294
1295 #ifdef WIRELESS_EXT
1296 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1297 #endif
1298 /* Register virtual mesh interface */
1299 ret = register_netdev(mesh_dev);
1300 if (ret) {
1301 lbs_pr_err("cannot register mshX virtual interface\n");
1302 goto err_free;
1303 }
1304
1305 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1306 if (ret)
1307 goto err_unregister;
1308
1309 /* Everything successful */
1310 ret = 0;
1311 goto done;
1312
1313 err_unregister:
1314 unregister_netdev(mesh_dev);
1315
1316 err_free:
1317 free_netdev(mesh_dev);
1318
1319 done:
1320 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1321 return ret;
1322 }
1323 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1324
1325
1326 static void lbs_remove_mesh(struct lbs_private *priv)
1327 {
1328 struct net_device *mesh_dev;
1329
1330 lbs_deb_enter(LBS_DEB_MAIN);
1331
1332 if (!priv)
1333 goto out;
1334
1335 mesh_dev = priv->mesh_dev;
1336 if (!mesh_dev)
1337 goto out;
1338
1339 netif_stop_queue(mesh_dev);
1340 netif_carrier_off(priv->mesh_dev);
1341
1342 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1343 unregister_netdev(mesh_dev);
1344
1345 priv->mesh_dev = NULL;
1346 free_netdev(mesh_dev);
1347
1348 out:
1349 lbs_deb_leave(LBS_DEB_MAIN);
1350 }
1351 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1352
1353 /**
1354 * @brief This function finds the CFP in
1355 * region_cfp_table based on region and band parameter.
1356 *
1357 * @param region The region code
1358 * @param band The band
1359 * @param cfp_no A pointer to CFP number
1360 * @return A pointer to CFP
1361 */
1362 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1363 {
1364 int i, end;
1365
1366 lbs_deb_enter(LBS_DEB_MAIN);
1367
1368 end = ARRAY_SIZE(region_cfp_table);
1369
1370 for (i = 0; i < end ; i++) {
1371 lbs_deb_main("region_cfp_table[i].region=%d\n",
1372 region_cfp_table[i].region);
1373 if (region_cfp_table[i].region == region) {
1374 *cfp_no = region_cfp_table[i].cfp_no_BG;
1375 lbs_deb_leave(LBS_DEB_MAIN);
1376 return region_cfp_table[i].cfp_BG;
1377 }
1378 }
1379
1380 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1381 return NULL;
1382 }
1383
1384 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1385 {
1386 int ret = 0;
1387 int i = 0;
1388
1389 struct chan_freq_power *cfp;
1390 int cfp_no;
1391
1392 lbs_deb_enter(LBS_DEB_MAIN);
1393
1394 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1395
1396 {
1397 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1398 if (cfp != NULL) {
1399 priv->region_channel[i].nrcfp = cfp_no;
1400 priv->region_channel[i].CFP = cfp;
1401 } else {
1402 lbs_deb_main("wrong region code %#x in band B/G\n",
1403 region);
1404 ret = -1;
1405 goto out;
1406 }
1407 priv->region_channel[i].valid = 1;
1408 priv->region_channel[i].region = region;
1409 priv->region_channel[i].band = band;
1410 i++;
1411 }
1412 out:
1413 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1414 return ret;
1415 }
1416
1417 /**
1418 * @brief This function handles the interrupt. it will change PS
1419 * state if applicable. it will wake up main_thread to handle
1420 * the interrupt event as well.
1421 *
1422 * @param dev A pointer to net_device structure
1423 * @return n/a
1424 */
1425 void lbs_interrupt(struct lbs_private *priv)
1426 {
1427 lbs_deb_enter(LBS_DEB_THREAD);
1428
1429 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1430
1431 if (!spin_is_locked(&priv->driver_lock)) {
1432 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1433 WARN_ON(1);
1434 }
1435
1436 priv->intcounter++;
1437
1438 if (priv->psstate == PS_STATE_SLEEP)
1439 priv->psstate = PS_STATE_AWAKE;
1440
1441 wake_up_interruptible(&priv->waitq);
1442
1443 lbs_deb_leave(LBS_DEB_THREAD);
1444 }
1445 EXPORT_SYMBOL_GPL(lbs_interrupt);
1446
1447 int lbs_reset_device(struct lbs_private *priv)
1448 {
1449 int ret;
1450
1451 lbs_deb_enter(LBS_DEB_MAIN);
1452 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1453 CMD_ACT_HALT, 0, 0, NULL);
1454 msleep_interruptible(10);
1455
1456 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1457 return ret;
1458 }
1459 EXPORT_SYMBOL_GPL(lbs_reset_device);
1460
1461 static int __init lbs_init_module(void)
1462 {
1463 lbs_deb_enter(LBS_DEB_MAIN);
1464 lbs_debugfs_init();
1465 lbs_deb_leave(LBS_DEB_MAIN);
1466 return 0;
1467 }
1468
1469 static void __exit lbs_exit_module(void)
1470 {
1471 lbs_deb_enter(LBS_DEB_MAIN);
1472
1473 lbs_debugfs_remove();
1474
1475 lbs_deb_leave(LBS_DEB_MAIN);
1476 }
1477
1478 /*
1479 * rtap interface support fuctions
1480 */
1481
1482 static int lbs_rtap_open(struct net_device *dev)
1483 {
1484 /* Yes, _stop_ the queue. Because we don't support injection */
1485 netif_carrier_off(dev);
1486 netif_stop_queue(dev);
1487 return 0;
1488 }
1489
1490 static int lbs_rtap_stop(struct net_device *dev)
1491 {
1492 return 0;
1493 }
1494
1495 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1496 {
1497 netif_stop_queue(dev);
1498 return NETDEV_TX_BUSY;
1499 }
1500
1501 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1502 {
1503 struct lbs_private *priv = dev->priv;
1504 return &priv->stats;
1505 }
1506
1507
1508 static void lbs_remove_rtap(struct lbs_private *priv)
1509 {
1510 if (priv->rtap_net_dev == NULL)
1511 return;
1512 unregister_netdev(priv->rtap_net_dev);
1513 free_netdev(priv->rtap_net_dev);
1514 priv->rtap_net_dev = NULL;
1515 }
1516
1517 static int lbs_add_rtap(struct lbs_private *priv)
1518 {
1519 int rc = 0;
1520 struct net_device *rtap_dev;
1521
1522 if (priv->rtap_net_dev)
1523 return -EPERM;
1524
1525 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1526 if (rtap_dev == NULL)
1527 return -ENOMEM;
1528
1529 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1530 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1531 rtap_dev->open = lbs_rtap_open;
1532 rtap_dev->stop = lbs_rtap_stop;
1533 rtap_dev->get_stats = lbs_rtap_get_stats;
1534 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1535 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1536 rtap_dev->priv = priv;
1537
1538 rc = register_netdev(rtap_dev);
1539 if (rc) {
1540 free_netdev(rtap_dev);
1541 return rc;
1542 }
1543 priv->rtap_net_dev = rtap_dev;
1544
1545 return 0;
1546 }
1547
1548
1549 module_init(lbs_init_module);
1550 module_exit(lbs_exit_module);
1551
1552 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1553 MODULE_AUTHOR("Marvell International Ltd.");
1554 MODULE_LICENSE("GPL");
CJK support for tty framebuffer vt