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libertas: convert DATA_RATE to a direct command
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / libertas / main.c
blob2fe7ad0f8327aab4df520566ab39c2f129112894
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 #include "join.h"
25 #include "cmd.h"
26
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29 #ifdef DEBUG
30 "-dbg"
31 #endif
32 "";
33
34
35 /* Module parameters */
36 unsigned int lbs_debug;
37 EXPORT_SYMBOL_GPL(lbs_debug);
38 module_param_named(libertas_debug, lbs_debug, int, 0644);
39
40
41 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
42 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
43 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
44 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
45 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
46
47 /* Format { channel, frequency (MHz), maxtxpower } */
48 /* band: 'B/G', region: USA FCC/Canada IC */
49 static struct chan_freq_power channel_freq_power_US_BG[] = {
50 {1, 2412, LBS_TX_PWR_US_DEFAULT},
51 {2, 2417, LBS_TX_PWR_US_DEFAULT},
52 {3, 2422, LBS_TX_PWR_US_DEFAULT},
53 {4, 2427, LBS_TX_PWR_US_DEFAULT},
54 {5, 2432, LBS_TX_PWR_US_DEFAULT},
55 {6, 2437, LBS_TX_PWR_US_DEFAULT},
56 {7, 2442, LBS_TX_PWR_US_DEFAULT},
57 {8, 2447, LBS_TX_PWR_US_DEFAULT},
58 {9, 2452, LBS_TX_PWR_US_DEFAULT},
59 {10, 2457, LBS_TX_PWR_US_DEFAULT},
60 {11, 2462, LBS_TX_PWR_US_DEFAULT}
61 };
62
63 /* band: 'B/G', region: Europe ETSI */
64 static struct chan_freq_power channel_freq_power_EU_BG[] = {
65 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
66 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
67 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
68 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
69 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
70 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
71 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
72 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
73 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
74 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
75 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
76 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
77 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
78 };
79
80 /* band: 'B/G', region: Spain */
81 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
82 {10, 2457, LBS_TX_PWR_DEFAULT},
83 {11, 2462, LBS_TX_PWR_DEFAULT}
84 };
85
86 /* band: 'B/G', region: France */
87 static struct chan_freq_power channel_freq_power_FR_BG[] = {
88 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
89 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
90 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
91 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
92 };
93
94 /* band: 'B/G', region: Japan */
95 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
96 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
97 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
98 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
99 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
100 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
101 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
102 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
103 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
104 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
105 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
106 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
107 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
108 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
109 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
110 };
111
112 /**
113 * the structure for channel, frequency and power
114 */
115 struct region_cfp_table {
116 u8 region;
117 struct chan_freq_power *cfp_BG;
118 int cfp_no_BG;
119 };
120
121 /**
122 * the structure for the mapping between region and CFP
123 */
124 static struct region_cfp_table region_cfp_table[] = {
125 {0x10, /*US FCC */
126 channel_freq_power_US_BG,
127 ARRAY_SIZE(channel_freq_power_US_BG),
128 }
129 ,
130 {0x20, /*CANADA IC */
131 channel_freq_power_US_BG,
132 ARRAY_SIZE(channel_freq_power_US_BG),
133 }
134 ,
135 {0x30, /*EU*/ channel_freq_power_EU_BG,
136 ARRAY_SIZE(channel_freq_power_EU_BG),
137 }
138 ,
139 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
140 ARRAY_SIZE(channel_freq_power_SPN_BG),
141 }
142 ,
143 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
144 ARRAY_SIZE(channel_freq_power_FR_BG),
145 }
146 ,
147 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
148 ARRAY_SIZE(channel_freq_power_JPN_BG),
149 }
150 ,
151 /*Add new region here */
152 };
153
154 /**
155 * the table to keep region code
156 */
157 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
158 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
159
160 /**
161 * 802.11b/g supported bitrates (in 500Kb/s units)
162 */
163 u8 lbs_bg_rates[MAX_RATES] =
164 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
165 0x00, 0x00 };
166
167 /**
168 * FW rate table. FW refers to rates by their index in this table, not by the
169 * rate value itself. Values of 0x00 are
170 * reserved positions.
171 */
172 static u8 fw_data_rates[MAX_RATES] =
173 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
174 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
175 };
176
177 /**
178 * @brief use index to get the data rate
179 *
180 * @param idx The index of data rate
181 * @return data rate or 0
182 */
183 u32 lbs_fw_index_to_data_rate(u8 idx)
184 {
185 if (idx >= sizeof(fw_data_rates))
186 idx = 0;
187 return fw_data_rates[idx];
188 }
189
190 /**
191 * @brief use rate to get the index
192 *
193 * @param rate data rate
194 * @return index or 0
195 */
196 u8 lbs_data_rate_to_fw_index(u32 rate)
197 {
198 u8 i;
199
200 if (!rate)
201 return 0;
202
203 for (i = 0; i < sizeof(fw_data_rates); i++) {
204 if (rate == fw_data_rates[i])
205 return i;
206 }
207 return 0;
208 }
209
210 /**
211 * Attributes exported through sysfs
212 */
213
214 /**
215 * @brief Get function for sysfs attribute anycast_mask
216 */
217 static ssize_t lbs_anycast_get(struct device *dev,
218 struct device_attribute *attr, char * buf)
219 {
220 struct lbs_private *priv = to_net_dev(dev)->priv;
221 struct cmd_ds_mesh_access mesh_access;
222 int ret;
223
224 memset(&mesh_access, 0, sizeof(mesh_access));
225
226 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
227 if (ret)
228 return ret;
229
230 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
231 }
232
233 /**
234 * @brief Set function for sysfs attribute anycast_mask
235 */
236 static ssize_t lbs_anycast_set(struct device *dev,
237 struct device_attribute *attr, const char * buf, size_t count)
238 {
239 struct lbs_private *priv = to_net_dev(dev)->priv;
240 struct cmd_ds_mesh_access mesh_access;
241 uint32_t datum;
242 int ret;
243
244 memset(&mesh_access, 0, sizeof(mesh_access));
245 sscanf(buf, "%x", &datum);
246 mesh_access.data[0] = cpu_to_le32(datum);
247
248 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
249 if (ret)
250 return ret;
251
252 return strlen(buf);
253 }
254
255 int lbs_add_rtap(struct lbs_private *priv);
256 void lbs_remove_rtap(struct lbs_private *priv);
257
258 /**
259 * Get function for sysfs attribute rtap
260 */
261 static ssize_t lbs_rtap_get(struct device *dev,
262 struct device_attribute *attr, char * buf)
263 {
264 struct lbs_private *priv = to_net_dev(dev)->priv;
265 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
266 }
267
268 /**
269 * Set function for sysfs attribute rtap
270 */
271 static ssize_t lbs_rtap_set(struct device *dev,
272 struct device_attribute *attr, const char * buf, size_t count)
273 {
274 int monitor_mode;
275 struct lbs_private *priv = to_net_dev(dev)->priv;
276
277 sscanf(buf, "%x", &monitor_mode);
278 if (monitor_mode != LBS_MONITOR_OFF) {
279 if(priv->monitormode == monitor_mode)
280 return strlen(buf);
281 if (priv->monitormode == LBS_MONITOR_OFF) {
282 if (priv->infra_open || priv->mesh_open)
283 return -EBUSY;
284 if (priv->mode == IW_MODE_INFRA)
285 lbs_send_deauthentication(priv);
286 else if (priv->mode == IW_MODE_ADHOC)
287 lbs_stop_adhoc_network(priv);
288 lbs_add_rtap(priv);
289 }
290 priv->monitormode = monitor_mode;
291 }
292
293 else {
294 if (priv->monitormode == LBS_MONITOR_OFF)
295 return strlen(buf);
296 priv->monitormode = LBS_MONITOR_OFF;
297 lbs_remove_rtap(priv);
298
299 if (priv->currenttxskb) {
300 dev_kfree_skb_any(priv->currenttxskb);
301 priv->currenttxskb = NULL;
302 }
303
304 /* Wake queues, command thread, etc. */
305 lbs_host_to_card_done(priv);
306 }
307
308 lbs_prepare_and_send_command(priv,
309 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
310 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
311 return strlen(buf);
312 }
313
314 /**
315 * lbs_rtap attribute to be exported per mshX interface
316 * through sysfs (/sys/class/net/mshX/libertas-rtap)
317 */
318 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
319 lbs_rtap_set );
320
321 /**
322 * anycast_mask attribute to be exported per mshX interface
323 * through sysfs (/sys/class/net/mshX/anycast_mask)
324 */
325 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
326
327 static ssize_t lbs_autostart_enabled_get(struct device *dev,
328 struct device_attribute *attr, char * buf)
329 {
330 struct lbs_private *priv = to_net_dev(dev)->priv;
331 struct cmd_ds_mesh_access mesh_access;
332 int ret;
333
334 memset(&mesh_access, 0, sizeof(mesh_access));
335
336 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_AUTOSTART_ENABLED, &mesh_access);
337 if (ret)
338 return ret;
339 return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
340 }
341
342 static ssize_t lbs_autostart_enabled_set(struct device *dev,
343 struct device_attribute *attr, const char * buf, size_t count)
344 {
345 struct cmd_ds_mesh_access mesh_access;
346 uint32_t datum;
347 struct lbs_private *priv = (to_net_dev(dev))->priv;
348 int ret;
349
350 memset(&mesh_access, 0, sizeof(mesh_access));
351 sscanf(buf, "%d", &datum);
352 mesh_access.data[0] = cpu_to_le32(datum);
353
354 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_AUTOSTART_ENABLED, &mesh_access);
355 if (ret == 0)
356 priv->mesh_autostart_enabled = datum ? 1 : 0;
357
358 return strlen(buf);
359 }
360
361 static DEVICE_ATTR(autostart_enabled, 0644,
362 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
363
364 static struct attribute *lbs_mesh_sysfs_entries[] = {
365 &dev_attr_anycast_mask.attr,
366 &dev_attr_autostart_enabled.attr,
367 NULL,
368 };
369
370 static struct attribute_group lbs_mesh_attr_group = {
371 .attrs = lbs_mesh_sysfs_entries,
372 };
373
374 /**
375 * @brief This function opens the ethX or mshX interface
376 *
377 * @param dev A pointer to net_device structure
378 * @return 0 or -EBUSY if monitor mode active
379 */
380 static int lbs_dev_open(struct net_device *dev)
381 {
382 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
383 int ret = 0;
384
385 spin_lock_irq(&priv->driver_lock);
386
387 if (priv->monitormode != LBS_MONITOR_OFF) {
388 ret = -EBUSY;
389 goto out;
390 }
391
392 if (dev == priv->mesh_dev) {
393 priv->mesh_open = 1;
394 priv->mesh_connect_status = LBS_CONNECTED;
395 netif_carrier_on(dev);
396 } else {
397 priv->infra_open = 1;
398
399 if (priv->connect_status == LBS_CONNECTED)
400 netif_carrier_on(dev);
401 else
402 netif_carrier_off(dev);
403 }
404
405 if (!priv->tx_pending_len)
406 netif_wake_queue(dev);
407 out:
408
409 spin_unlock_irq(&priv->driver_lock);
410 return ret;
411 }
412
413 /**
414 * @brief This function closes the mshX interface
415 *
416 * @param dev A pointer to net_device structure
417 * @return 0
418 */
419 static int lbs_mesh_stop(struct net_device *dev)
420 {
421 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
422
423 spin_lock_irq(&priv->driver_lock);
424
425 priv->mesh_open = 0;
426 priv->mesh_connect_status = LBS_DISCONNECTED;
427
428 netif_stop_queue(dev);
429 netif_carrier_off(dev);
430
431 spin_unlock_irq(&priv->driver_lock);
432 return 0;
433 }
434
435 /**
436 * @brief This function closes the ethX interface
437 *
438 * @param dev A pointer to net_device structure
439 * @return 0
440 */
441 static int lbs_eth_stop(struct net_device *dev)
442 {
443 struct lbs_private *priv = (struct lbs_private *) dev->priv;
444
445 spin_lock_irq(&priv->driver_lock);
446
447 priv->infra_open = 0;
448
449 netif_stop_queue(dev);
450
451 spin_unlock_irq(&priv->driver_lock);
452 return 0;
453 }
454
455 static void lbs_tx_timeout(struct net_device *dev)
456 {
457 struct lbs_private *priv = (struct lbs_private *) dev->priv;
458
459 lbs_deb_enter(LBS_DEB_TX);
460
461 lbs_pr_err("tx watch dog timeout\n");
462
463 dev->trans_start = jiffies;
464
465 if (priv->currenttxskb) {
466 priv->eventcause = 0x01000000;
467 lbs_send_tx_feedback(priv);
468 }
469 /* XX: Shouldn't we also call into the hw-specific driver
470 to kick it somehow? */
471 lbs_host_to_card_done(priv);
472
473 lbs_deb_leave(LBS_DEB_TX);
474 }
475
476 void lbs_host_to_card_done(struct lbs_private *priv)
477 {
478 unsigned long flags;
479
480 spin_lock_irqsave(&priv->driver_lock, flags);
481
482 priv->dnld_sent = DNLD_RES_RECEIVED;
483
484 /* Wake main thread if commands are pending */
485 if (!priv->cur_cmd)
486 wake_up_interruptible(&priv->waitq);
487
488 /* Don't wake netif queues if we're in monitor mode and
489 a TX packet is already pending, or if there are commands
490 queued to be sent. */
491 if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
492 if (priv->dev && priv->connect_status == LBS_CONNECTED)
493 netif_wake_queue(priv->dev);
494
495 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
496 netif_wake_queue(priv->mesh_dev);
497 }
498 spin_unlock_irqrestore(&priv->driver_lock, flags);
499 }
500 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
501
502 /**
503 * @brief This function returns the network statistics
504 *
505 * @param dev A pointer to struct lbs_private structure
506 * @return A pointer to net_device_stats structure
507 */
508 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
509 {
510 struct lbs_private *priv = (struct lbs_private *) dev->priv;
511
512 return &priv->stats;
513 }
514
515 static int lbs_set_mac_address(struct net_device *dev, void *addr)
516 {
517 int ret = 0;
518 struct lbs_private *priv = (struct lbs_private *) dev->priv;
519 struct sockaddr *phwaddr = addr;
520
521 lbs_deb_enter(LBS_DEB_NET);
522
523 /* In case it was called from the mesh device */
524 dev = priv->dev ;
525
526 memset(priv->current_addr, 0, ETH_ALEN);
527
528 /* dev->dev_addr is 8 bytes */
529 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
530
531 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
532 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
533
534 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
535 CMD_ACT_SET,
536 CMD_OPTION_WAITFORRSP, 0, NULL);
537
538 if (ret) {
539 lbs_deb_net("set MAC address failed\n");
540 ret = -1;
541 goto done;
542 }
543
544 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
545 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
546 if (priv->mesh_dev)
547 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
548
549 done:
550 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
551 return ret;
552 }
553
554 static int lbs_copy_multicast_address(struct lbs_private *priv,
555 struct net_device *dev)
556 {
557 int i = 0;
558 struct dev_mc_list *mcptr = dev->mc_list;
559
560 for (i = 0; i < dev->mc_count; i++) {
561 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
562 mcptr = mcptr->next;
563 }
564
565 return i;
566
567 }
568
569 static void lbs_set_multicast_list(struct net_device *dev)
570 {
571 struct lbs_private *priv = dev->priv;
572 int oldpacketfilter;
573 DECLARE_MAC_BUF(mac);
574
575 lbs_deb_enter(LBS_DEB_NET);
576
577 oldpacketfilter = priv->currentpacketfilter;
578
579 if (dev->flags & IFF_PROMISC) {
580 lbs_deb_net("enable promiscuous mode\n");
581 priv->currentpacketfilter |=
582 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
583 priv->currentpacketfilter &=
584 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
585 CMD_ACT_MAC_MULTICAST_ENABLE);
586 } else {
587 /* Multicast */
588 priv->currentpacketfilter &=
589 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
590
591 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
592 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
593 lbs_deb_net( "enabling all multicast\n");
594 priv->currentpacketfilter |=
595 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
596 priv->currentpacketfilter &=
597 ~CMD_ACT_MAC_MULTICAST_ENABLE;
598 } else {
599 priv->currentpacketfilter &=
600 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
601
602 if (!dev->mc_count) {
603 lbs_deb_net("no multicast addresses, "
604 "disabling multicast\n");
605 priv->currentpacketfilter &=
606 ~CMD_ACT_MAC_MULTICAST_ENABLE;
607 } else {
608 int i;
609
610 priv->currentpacketfilter |=
611 CMD_ACT_MAC_MULTICAST_ENABLE;
612
613 priv->nr_of_multicastmacaddr =
614 lbs_copy_multicast_address(priv, dev);
615
616 lbs_deb_net("multicast addresses: %d\n",
617 dev->mc_count);
618
619 for (i = 0; i < dev->mc_count; i++) {
620 lbs_deb_net("Multicast address %d:%s\n",
621 i, print_mac(mac,
622 priv->multicastlist[i]));
623 }
624 /* send multicast addresses to firmware */
625 lbs_prepare_and_send_command(priv,
626 CMD_MAC_MULTICAST_ADR,
627 CMD_ACT_SET, 0, 0,
628 NULL);
629 }
630 }
631 }
632
633 if (priv->currentpacketfilter != oldpacketfilter) {
634 lbs_set_mac_packet_filter(priv);
635 }
636
637 lbs_deb_leave(LBS_DEB_NET);
638 }
639
640 /**
641 * @brief This function handles the major jobs in the LBS driver.
642 * It handles all events generated by firmware, RX data received
643 * from firmware and TX data sent from kernel.
644 *
645 * @param data A pointer to lbs_thread structure
646 * @return 0
647 */
648 static int lbs_thread(void *data)
649 {
650 struct net_device *dev = data;
651 struct lbs_private *priv = dev->priv;
652 wait_queue_t wait;
653 u8 ireg = 0;
654
655 lbs_deb_enter(LBS_DEB_THREAD);
656
657 init_waitqueue_entry(&wait, current);
658
659 set_freezable();
660
661 for (;;) {
662 int shouldsleep;
663
664 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
665 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
666
667 add_wait_queue(&priv->waitq, &wait);
668 set_current_state(TASK_INTERRUPTIBLE);
669 spin_lock_irq(&priv->driver_lock);
670
671 if (priv->surpriseremoved)
672 shouldsleep = 0; /* Bye */
673 else if (priv->psstate == PS_STATE_SLEEP)
674 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
675 else if (priv->intcounter)
676 shouldsleep = 0; /* Interrupt pending. Deal with it now */
677 else if (!priv->fw_ready)
678 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
679 else if (priv->dnld_sent)
680 shouldsleep = 1; /* Something is en route to the device already */
681 else if (priv->tx_pending_len > 0)
682 shouldsleep = 0; /* We've a packet to send */
683 else if (priv->cur_cmd)
684 shouldsleep = 1; /* Can't send a command; one already running */
685 else if (!list_empty(&priv->cmdpendingq))
686 shouldsleep = 0; /* We have a command to send */
687 else
688 shouldsleep = 1; /* No command */
689
690 if (shouldsleep) {
691 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
692 priv->connect_status, priv->intcounter,
693 priv->psmode, priv->psstate);
694 spin_unlock_irq(&priv->driver_lock);
695 schedule();
696 } else
697 spin_unlock_irq(&priv->driver_lock);
698
699 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
700 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
701
702 set_current_state(TASK_RUNNING);
703 remove_wait_queue(&priv->waitq, &wait);
704 try_to_freeze();
705
706 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
707 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
708
709 if (kthread_should_stop() || priv->surpriseremoved) {
710 lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
711 priv->surpriseremoved);
712 break;
713 }
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 /* Any Card Event */
746 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
747 lbs_deb_thread("main-thread: Card Event Activity\n");
748
749 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
750
751 if (priv->hw_read_event_cause(priv)) {
752 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
753 spin_unlock_irq(&priv->driver_lock);
754 continue;
755 }
756 spin_unlock_irq(&priv->driver_lock);
757 lbs_process_event(priv);
758 } else
759 spin_unlock_irq(&priv->driver_lock);
760
761 if (!priv->fw_ready)
762 continue;
763
764 /* Check if we need to confirm Sleep Request received previously */
765 if (priv->psstate == PS_STATE_PRE_SLEEP &&
766 !priv->dnld_sent && !priv->cur_cmd) {
767 if (priv->connect_status == LBS_CONNECTED) {
768 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
769 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
770
771 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
772 } else {
773 /* workaround for firmware sending
774 * deauth/linkloss event immediately
775 * after sleep request; remove this
776 * after firmware fixes it
777 */
778 priv->psstate = PS_STATE_AWAKE;
779 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
780 }
781 }
782
783 /* The PS state is changed during processing of Sleep Request
784 * event above
785 */
786 if ((priv->psstate == PS_STATE_SLEEP) ||
787 (priv->psstate == PS_STATE_PRE_SLEEP))
788 continue;
789
790 /* Execute the next command */
791 if (!priv->dnld_sent && !priv->cur_cmd)
792 lbs_execute_next_command(priv);
793
794 /* Wake-up command waiters which can't sleep in
795 * lbs_prepare_and_send_command
796 */
797 if (!list_empty(&priv->cmdpendingq))
798 wake_up_all(&priv->cmd_pending);
799
800 spin_lock_irq(&priv->driver_lock);
801 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
802 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
803 priv->tx_pending_buf,
804 priv->tx_pending_len);
805 if (ret) {
806 lbs_deb_tx("host_to_card failed %d\n", ret);
807 priv->dnld_sent = DNLD_RES_RECEIVED;
808 }
809 priv->tx_pending_len = 0;
810 if (!priv->currenttxskb) {
811 /* We can wake the queues immediately if we aren't
812 waiting for TX feedback */
813 if (priv->connect_status == LBS_CONNECTED)
814 netif_wake_queue(priv->dev);
815 if (priv->mesh_dev &&
816 priv->mesh_connect_status == LBS_CONNECTED)
817 netif_wake_queue(priv->mesh_dev);
818 }
819 }
820 spin_unlock_irq(&priv->driver_lock);
821 }
822
823 del_timer(&priv->command_timer);
824 wake_up_all(&priv->cmd_pending);
825
826 lbs_deb_leave(LBS_DEB_THREAD);
827 return 0;
828 }
829
830 /**
831 * @brief This function downloads firmware image, gets
832 * HW spec from firmware and set basic parameters to
833 * firmware.
834 *
835 * @param priv A pointer to struct lbs_private structure
836 * @return 0 or -1
837 */
838 static int lbs_setup_firmware(struct lbs_private *priv)
839 {
840 int ret = -1;
841 struct cmd_ds_mesh_access mesh_access;
842
843 lbs_deb_enter(LBS_DEB_FW);
844
845 /*
846 * Read MAC address from HW
847 */
848 memset(priv->current_addr, 0xff, ETH_ALEN);
849 ret = lbs_update_hw_spec(priv);
850 if (ret) {
851 ret = -1;
852 goto done;
853 }
854
855 lbs_set_mac_packet_filter(priv);
856
857 ret = lbs_get_data_rate(priv);
858 if (ret < 0) {
859 ret = -1;
860 goto done;
861 }
862
863 /* Disable mesh autostart */
864 if (priv->mesh_dev) {
865 memset(&mesh_access, 0, sizeof(mesh_access));
866 mesh_access.data[0] = cpu_to_le32(0);
867 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
868 &mesh_access);
869 if (ret) {
870 ret = -1;
871 goto done;
872 }
873 priv->mesh_autostart_enabled = 0;
874 }
875
876 ret = 0;
877 done:
878 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
879 return ret;
880 }
881
882 /**
883 * This function handles the timeout of command sending.
884 * It will re-send the same command again.
885 */
886 static void command_timer_fn(unsigned long data)
887 {
888 struct lbs_private *priv = (struct lbs_private *)data;
889 struct cmd_ctrl_node *node;
890 unsigned long flags;
891
892 node = priv->cur_cmd;
893 if (node == NULL) {
894 lbs_deb_fw("ptempnode empty\n");
895 return;
896 }
897
898 if (!node->cmdbuf) {
899 lbs_deb_fw("cmd is NULL\n");
900 return;
901 }
902
903 lbs_deb_fw("command_timer_fn fired, cmd %x\n", node->cmdbuf->command);
904
905 if (!priv->fw_ready)
906 return;
907
908 spin_lock_irqsave(&priv->driver_lock, flags);
909 priv->cur_cmd = NULL;
910 spin_unlock_irqrestore(&priv->driver_lock, flags);
911
912 lbs_deb_fw("re-sending same command because of timeout\n");
913 lbs_queue_cmd(priv, node, 0);
914
915 wake_up_interruptible(&priv->waitq);
916
917 return;
918 }
919
920 static int lbs_init_adapter(struct lbs_private *priv)
921 {
922 size_t bufsize;
923 int i, ret = 0;
924
925 /* Allocate buffer to store the BSSID list */
926 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
927 priv->networks = kzalloc(bufsize, GFP_KERNEL);
928 if (!priv->networks) {
929 lbs_pr_err("Out of memory allocating beacons\n");
930 ret = -1;
931 goto out;
932 }
933
934 /* Initialize scan result lists */
935 INIT_LIST_HEAD(&priv->network_free_list);
936 INIT_LIST_HEAD(&priv->network_list);
937 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
938 list_add_tail(&priv->networks[i].list,
939 &priv->network_free_list);
940 }
941
942 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
943 priv->lbs_ps_confirm_sleep.command =
944 cpu_to_le16(CMD_802_11_PS_MODE);
945 priv->lbs_ps_confirm_sleep.size =
946 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
947 priv->lbs_ps_confirm_sleep.action =
948 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
949
950 memset(priv->current_addr, 0xff, ETH_ALEN);
951
952 priv->connect_status = LBS_DISCONNECTED;
953 priv->mesh_connect_status = LBS_DISCONNECTED;
954 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
955 priv->mode = IW_MODE_INFRA;
956 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
957 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
958 priv->radioon = RADIO_ON;
959 priv->auto_rate = 1;
960 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
961 priv->psmode = LBS802_11POWERMODECAM;
962 priv->psstate = PS_STATE_FULL_POWER;
963
964 mutex_init(&priv->lock);
965
966 setup_timer(&priv->command_timer, command_timer_fn,
967 (unsigned long)priv);
968
969 INIT_LIST_HEAD(&priv->cmdfreeq);
970 INIT_LIST_HEAD(&priv->cmdpendingq);
971
972 spin_lock_init(&priv->driver_lock);
973 init_waitqueue_head(&priv->cmd_pending);
974
975 /* Allocate the command buffers */
976 if (lbs_allocate_cmd_buffer(priv)) {
977 lbs_pr_err("Out of memory allocating command buffers\n");
978 ret = -1;
979 }
980
981 out:
982 return ret;
983 }
984
985 static void lbs_free_adapter(struct lbs_private *priv)
986 {
987 lbs_deb_fw("free command buffer\n");
988 lbs_free_cmd_buffer(priv);
989
990 lbs_deb_fw("free command_timer\n");
991 del_timer(&priv->command_timer);
992
993 lbs_deb_fw("free scan results table\n");
994 kfree(priv->networks);
995 priv->networks = NULL;
996 }
997
998 /**
999 * @brief This function adds the card. it will probe the
1000 * card, allocate the lbs_priv and initialize the device.
1001 *
1002 * @param card A pointer to card
1003 * @return A pointer to struct lbs_private structure
1004 */
1005 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1006 {
1007 struct net_device *dev = NULL;
1008 struct lbs_private *priv = NULL;
1009
1010 lbs_deb_enter(LBS_DEB_NET);
1011
1012 /* Allocate an Ethernet device and register it */
1013 dev = alloc_etherdev(sizeof(struct lbs_private));
1014 if (!dev) {
1015 lbs_pr_err("init ethX device failed\n");
1016 goto done;
1017 }
1018 priv = dev->priv;
1019
1020 if (lbs_init_adapter(priv)) {
1021 lbs_pr_err("failed to initialize adapter structure.\n");
1022 goto err_init_adapter;
1023 }
1024
1025 priv->dev = dev;
1026 priv->card = card;
1027 priv->mesh_open = 0;
1028 priv->infra_open = 0;
1029
1030 /* Setup the OS Interface to our functions */
1031 dev->open = lbs_dev_open;
1032 dev->hard_start_xmit = lbs_hard_start_xmit;
1033 dev->stop = lbs_eth_stop;
1034 dev->set_mac_address = lbs_set_mac_address;
1035 dev->tx_timeout = lbs_tx_timeout;
1036 dev->get_stats = lbs_get_stats;
1037 dev->watchdog_timeo = 5 * HZ;
1038 dev->ethtool_ops = &lbs_ethtool_ops;
1039 #ifdef WIRELESS_EXT
1040 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1041 #endif
1042 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1043 dev->set_multicast_list = lbs_set_multicast_list;
1044
1045 SET_NETDEV_DEV(dev, dmdev);
1046
1047 priv->rtap_net_dev = NULL;
1048
1049 lbs_deb_thread("Starting main thread...\n");
1050 init_waitqueue_head(&priv->waitq);
1051 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1052 if (IS_ERR(priv->main_thread)) {
1053 lbs_deb_thread("Error creating main thread.\n");
1054 goto err_init_adapter;
1055 }
1056
1057 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1058 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1059 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1060 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1061
1062 goto done;
1063
1064 err_init_adapter:
1065 lbs_free_adapter(priv);
1066 free_netdev(dev);
1067 priv = NULL;
1068
1069 done:
1070 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1071 return priv;
1072 }
1073 EXPORT_SYMBOL_GPL(lbs_add_card);
1074
1075
1076 int lbs_remove_card(struct lbs_private *priv)
1077 {
1078 struct net_device *dev = priv->dev;
1079 union iwreq_data wrqu;
1080
1081 lbs_deb_enter(LBS_DEB_MAIN);
1082
1083 lbs_remove_rtap(priv);
1084
1085 dev = priv->dev;
1086
1087 cancel_delayed_work(&priv->scan_work);
1088 cancel_delayed_work(&priv->assoc_work);
1089 destroy_workqueue(priv->work_thread);
1090
1091 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1092 priv->psmode = LBS802_11POWERMODECAM;
1093 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1094 }
1095
1096 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1097 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1098 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1099
1100 /* Stop the thread servicing the interrupts */
1101 priv->surpriseremoved = 1;
1102 kthread_stop(priv->main_thread);
1103
1104 lbs_free_adapter(priv);
1105
1106 priv->dev = NULL;
1107 free_netdev(dev);
1108
1109 lbs_deb_leave(LBS_DEB_MAIN);
1110 return 0;
1111 }
1112 EXPORT_SYMBOL_GPL(lbs_remove_card);
1113
1114
1115 int lbs_start_card(struct lbs_private *priv)
1116 {
1117 struct net_device *dev = priv->dev;
1118 int ret = -1;
1119
1120 lbs_deb_enter(LBS_DEB_MAIN);
1121
1122 /* poke the firmware */
1123 ret = lbs_setup_firmware(priv);
1124 if (ret)
1125 goto done;
1126
1127 /* init 802.11d */
1128 lbs_init_11d(priv);
1129
1130 if (register_netdev(dev)) {
1131 lbs_pr_err("cannot register ethX device\n");
1132 goto done;
1133 }
1134 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1135 lbs_pr_err("cannot register lbs_rtap attribute\n");
1136
1137 lbs_debugfs_init_one(priv, dev);
1138
1139 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1140
1141 ret = 0;
1142
1143 done:
1144 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1145 return ret;
1146 }
1147 EXPORT_SYMBOL_GPL(lbs_start_card);
1148
1149
1150 int lbs_stop_card(struct lbs_private *priv)
1151 {
1152 struct net_device *dev = priv->dev;
1153 int ret = -1;
1154 struct cmd_ctrl_node *cmdnode;
1155 unsigned long flags;
1156
1157 lbs_deb_enter(LBS_DEB_MAIN);
1158
1159 netif_stop_queue(priv->dev);
1160 netif_carrier_off(priv->dev);
1161
1162 lbs_debugfs_remove_one(priv);
1163 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1164
1165 /* Flush pending command nodes */
1166 spin_lock_irqsave(&priv->driver_lock, flags);
1167 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1168 cmdnode->cmdwaitqwoken = 1;
1169 wake_up_interruptible(&cmdnode->cmdwait_q);
1170 }
1171 spin_unlock_irqrestore(&priv->driver_lock, flags);
1172
1173 unregister_netdev(dev);
1174
1175 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1176 return ret;
1177 }
1178 EXPORT_SYMBOL_GPL(lbs_stop_card);
1179
1180
1181 /**
1182 * @brief This function adds mshX interface
1183 *
1184 * @param priv A pointer to the struct lbs_private structure
1185 * @return 0 if successful, -X otherwise
1186 */
1187 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1188 {
1189 struct net_device *mesh_dev = NULL;
1190 int ret = 0;
1191
1192 lbs_deb_enter(LBS_DEB_MESH);
1193
1194 /* Allocate a virtual mesh device */
1195 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1196 lbs_deb_mesh("init mshX device failed\n");
1197 ret = -ENOMEM;
1198 goto done;
1199 }
1200 mesh_dev->priv = priv;
1201 priv->mesh_dev = mesh_dev;
1202
1203 mesh_dev->open = lbs_dev_open;
1204 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1205 mesh_dev->stop = lbs_mesh_stop;
1206 mesh_dev->get_stats = lbs_get_stats;
1207 mesh_dev->set_mac_address = lbs_set_mac_address;
1208 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1209 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1210 sizeof(priv->dev->dev_addr));
1211
1212 SET_NETDEV_DEV(priv->mesh_dev, dev);
1213
1214 #ifdef WIRELESS_EXT
1215 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1216 #endif
1217 /* Register virtual mesh interface */
1218 ret = register_netdev(mesh_dev);
1219 if (ret) {
1220 lbs_pr_err("cannot register mshX virtual interface\n");
1221 goto err_free;
1222 }
1223
1224 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1225 if (ret)
1226 goto err_unregister;
1227
1228 /* Everything successful */
1229 ret = 0;
1230 goto done;
1231
1232 err_unregister:
1233 unregister_netdev(mesh_dev);
1234
1235 err_free:
1236 free_netdev(mesh_dev);
1237
1238 done:
1239 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1240 return ret;
1241 }
1242 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1243
1244
1245 void lbs_remove_mesh(struct lbs_private *priv)
1246 {
1247 struct net_device *mesh_dev;
1248
1249 lbs_deb_enter(LBS_DEB_MAIN);
1250
1251 if (!priv)
1252 goto out;
1253
1254 mesh_dev = priv->mesh_dev;
1255
1256 netif_stop_queue(mesh_dev);
1257 netif_carrier_off(priv->mesh_dev);
1258
1259 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1260 unregister_netdev(mesh_dev);
1261
1262 priv->mesh_dev = NULL ;
1263 free_netdev(mesh_dev);
1264
1265 out:
1266 lbs_deb_leave(LBS_DEB_MAIN);
1267 }
1268 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1269
1270 /**
1271 * @brief This function finds the CFP in
1272 * region_cfp_table based on region and band parameter.
1273 *
1274 * @param region The region code
1275 * @param band The band
1276 * @param cfp_no A pointer to CFP number
1277 * @return A pointer to CFP
1278 */
1279 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1280 {
1281 int i, end;
1282
1283 lbs_deb_enter(LBS_DEB_MAIN);
1284
1285 end = ARRAY_SIZE(region_cfp_table);
1286
1287 for (i = 0; i < end ; i++) {
1288 lbs_deb_main("region_cfp_table[i].region=%d\n",
1289 region_cfp_table[i].region);
1290 if (region_cfp_table[i].region == region) {
1291 *cfp_no = region_cfp_table[i].cfp_no_BG;
1292 lbs_deb_leave(LBS_DEB_MAIN);
1293 return region_cfp_table[i].cfp_BG;
1294 }
1295 }
1296
1297 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1298 return NULL;
1299 }
1300
1301 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1302 {
1303 int ret = 0;
1304 int i = 0;
1305
1306 struct chan_freq_power *cfp;
1307 int cfp_no;
1308
1309 lbs_deb_enter(LBS_DEB_MAIN);
1310
1311 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1312
1313 {
1314 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1315 if (cfp != NULL) {
1316 priv->region_channel[i].nrcfp = cfp_no;
1317 priv->region_channel[i].CFP = cfp;
1318 } else {
1319 lbs_deb_main("wrong region code %#x in band B/G\n",
1320 region);
1321 ret = -1;
1322 goto out;
1323 }
1324 priv->region_channel[i].valid = 1;
1325 priv->region_channel[i].region = region;
1326 priv->region_channel[i].band = band;
1327 i++;
1328 }
1329 out:
1330 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1331 return ret;
1332 }
1333
1334 /**
1335 * @brief This function handles the interrupt. it will change PS
1336 * state if applicable. it will wake up main_thread to handle
1337 * the interrupt event as well.
1338 *
1339 * @param dev A pointer to net_device structure
1340 * @return n/a
1341 */
1342 void lbs_interrupt(struct lbs_private *priv)
1343 {
1344 lbs_deb_enter(LBS_DEB_THREAD);
1345
1346 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1347
1348 if (spin_trylock(&priv->driver_lock)) {
1349 spin_unlock(&priv->driver_lock);
1350 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1351 WARN_ON(1);
1352 }
1353
1354 priv->intcounter++;
1355
1356 if (priv->psstate == PS_STATE_SLEEP)
1357 priv->psstate = PS_STATE_AWAKE;
1358
1359 wake_up_interruptible(&priv->waitq);
1360
1361 lbs_deb_leave(LBS_DEB_THREAD);
1362 }
1363 EXPORT_SYMBOL_GPL(lbs_interrupt);
1364
1365 int lbs_reset_device(struct lbs_private *priv)
1366 {
1367 int ret;
1368
1369 lbs_deb_enter(LBS_DEB_MAIN);
1370 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1371 CMD_ACT_HALT, 0, 0, NULL);
1372 msleep_interruptible(10);
1373
1374 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1375 return ret;
1376 }
1377 EXPORT_SYMBOL_GPL(lbs_reset_device);
1378
1379 static int __init lbs_init_module(void)
1380 {
1381 lbs_deb_enter(LBS_DEB_MAIN);
1382 lbs_debugfs_init();
1383 lbs_deb_leave(LBS_DEB_MAIN);
1384 return 0;
1385 }
1386
1387 static void __exit lbs_exit_module(void)
1388 {
1389 lbs_deb_enter(LBS_DEB_MAIN);
1390
1391 lbs_debugfs_remove();
1392
1393 lbs_deb_leave(LBS_DEB_MAIN);
1394 }
1395
1396 /*
1397 * rtap interface support fuctions
1398 */
1399
1400 static int lbs_rtap_open(struct net_device *dev)
1401 {
1402 /* Yes, _stop_ the queue. Because we don't support injection */
1403 netif_carrier_off(dev);
1404 netif_stop_queue(dev);
1405 return 0;
1406 }
1407
1408 static int lbs_rtap_stop(struct net_device *dev)
1409 {
1410 return 0;
1411 }
1412
1413 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1414 {
1415 netif_stop_queue(dev);
1416 return NETDEV_TX_BUSY;
1417 }
1418
1419 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1420 {
1421 struct lbs_private *priv = dev->priv;
1422 return &priv->stats;
1423 }
1424
1425
1426 void lbs_remove_rtap(struct lbs_private *priv)
1427 {
1428 if (priv->rtap_net_dev == NULL)
1429 return;
1430 unregister_netdev(priv->rtap_net_dev);
1431 free_netdev(priv->rtap_net_dev);
1432 priv->rtap_net_dev = NULL;
1433 }
1434
1435 int lbs_add_rtap(struct lbs_private *priv)
1436 {
1437 int rc = 0;
1438 struct net_device *rtap_dev;
1439
1440 if (priv->rtap_net_dev)
1441 return -EPERM;
1442
1443 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1444 if (rtap_dev == NULL)
1445 return -ENOMEM;
1446
1447 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1448 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1449 rtap_dev->open = lbs_rtap_open;
1450 rtap_dev->stop = lbs_rtap_stop;
1451 rtap_dev->get_stats = lbs_rtap_get_stats;
1452 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1453 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1454 rtap_dev->priv = priv;
1455
1456 rc = register_netdev(rtap_dev);
1457 if (rc) {
1458 free_netdev(rtap_dev);
1459 return rc;
1460 }
1461 priv->rtap_net_dev = rtap_dev;
1462
1463 return 0;
1464 }
1465
1466
1467 module_init(lbs_init_module);
1468 module_exit(lbs_exit_module);
1469
1470 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1471 MODULE_AUTHOR("Marvell International Ltd.");
1472 MODULE_LICENSE("GPL");
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