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libertas: make rtap and normal modes mutually exclusive, clean up open/stop
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / libertas / main.c
blob88664024bf8057a02b48b2dc409c801baf987225
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
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 cmd_ds_mesh_access mesh_access;
220
221 memset(&mesh_access, 0, sizeof(mesh_access));
222 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
223 CMD_MESH_ACCESS,
224 CMD_ACT_MESH_GET_ANYCAST,
225 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
226
227 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
228 }
229
230 /**
231 * @brief Set function for sysfs attribute anycast_mask
232 */
233 static ssize_t lbs_anycast_set(struct device *dev,
234 struct device_attribute *attr, const char * buf, size_t count)
235 {
236 struct cmd_ds_mesh_access mesh_access;
237 uint32_t datum;
238
239 memset(&mesh_access, 0, sizeof(mesh_access));
240 sscanf(buf, "%x", &datum);
241 mesh_access.data[0] = cpu_to_le32(datum);
242
243 lbs_prepare_and_send_command((to_net_dev(dev))->priv,
244 CMD_MESH_ACCESS,
245 CMD_ACT_MESH_SET_ANYCAST,
246 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
247 return strlen(buf);
248 }
249
250 int lbs_add_rtap(struct lbs_private *priv);
251 void lbs_remove_rtap(struct lbs_private *priv);
252
253 /**
254 * Get function for sysfs attribute rtap
255 */
256 static ssize_t lbs_rtap_get(struct device *dev,
257 struct device_attribute *attr, char * buf)
258 {
259 struct lbs_private *priv = to_net_dev(dev)->priv;
260 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
261 }
262
263 /**
264 * Set function for sysfs attribute rtap
265 */
266 static ssize_t lbs_rtap_set(struct device *dev,
267 struct device_attribute *attr, const char * buf, size_t count)
268 {
269 int monitor_mode;
270 struct lbs_private *priv = to_net_dev(dev)->priv;
271
272 sscanf(buf, "%x", &monitor_mode);
273 if (monitor_mode != LBS_MONITOR_OFF) {
274 if(priv->monitormode == monitor_mode)
275 return strlen(buf);
276 if (priv->monitormode == LBS_MONITOR_OFF) {
277 if (priv->infra_open || priv->mesh_open)
278 return -EBUSY;
279 if (priv->mode == IW_MODE_INFRA)
280 lbs_send_deauthentication(priv);
281 else if (priv->mode == IW_MODE_ADHOC)
282 lbs_stop_adhoc_network(priv);
283 lbs_add_rtap(priv);
284 }
285 priv->monitormode = monitor_mode;
286 }
287
288 else {
289 if (priv->monitormode == LBS_MONITOR_OFF)
290 return strlen(buf);
291 priv->monitormode = LBS_MONITOR_OFF;
292 lbs_remove_rtap(priv);
293
294 if (priv->currenttxskb) {
295 dev_kfree_skb_any(priv->currenttxskb);
296 priv->currenttxskb = NULL;
297 }
298
299 /* Wake queues, command thread, etc. */
300 lbs_host_to_card_done(priv);
301 }
302
303 lbs_prepare_and_send_command(priv,
304 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
305 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
306 return strlen(buf);
307 }
308
309 /**
310 * lbs_rtap attribute to be exported per mshX interface
311 * through sysfs (/sys/class/net/mshX/libertas-rtap)
312 */
313 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
314 lbs_rtap_set );
315
316 /**
317 * anycast_mask attribute to be exported per mshX interface
318 * through sysfs (/sys/class/net/mshX/anycast_mask)
319 */
320 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
321
322 static ssize_t lbs_autostart_enabled_get(struct device *dev,
323 struct device_attribute *attr, char * buf)
324 {
325 struct cmd_ds_mesh_access mesh_access;
326
327 memset(&mesh_access, 0, sizeof(mesh_access));
328 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
329 CMD_MESH_ACCESS,
330 CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
331 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
332
333 return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
334 }
335
336 static ssize_t lbs_autostart_enabled_set(struct device *dev,
337 struct device_attribute *attr, const char * buf, size_t count)
338 {
339 struct cmd_ds_mesh_access mesh_access;
340 uint32_t datum;
341 struct lbs_private *priv = (to_net_dev(dev))->priv;
342 int ret;
343
344 memset(&mesh_access, 0, sizeof(mesh_access));
345 sscanf(buf, "%d", &datum);
346 mesh_access.data[0] = cpu_to_le32(datum);
347
348 ret = lbs_prepare_and_send_command(priv,
349 CMD_MESH_ACCESS,
350 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
351 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
352 if (ret == 0)
353 priv->mesh_autostart_enabled = datum ? 1 : 0;
354
355 return strlen(buf);
356 }
357
358 static DEVICE_ATTR(autostart_enabled, 0644,
359 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
360
361 static struct attribute *lbs_mesh_sysfs_entries[] = {
362 &dev_attr_anycast_mask.attr,
363 &dev_attr_autostart_enabled.attr,
364 NULL,
365 };
366
367 static struct attribute_group lbs_mesh_attr_group = {
368 .attrs = lbs_mesh_sysfs_entries,
369 };
370
371 /**
372 * @brief This function opens the ethX or mshX interface
373 *
374 * @param dev A pointer to net_device structure
375 * @return 0 or -EBUSY if monitor mode active
376 */
377 static int lbs_dev_open(struct net_device *dev)
378 {
379 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
380 int ret = 0;
381
382 spin_lock_irq(&priv->driver_lock);
383
384 if (priv->monitormode != LBS_MONITOR_OFF) {
385 ret = -EBUSY;
386 goto out;
387 }
388
389 if (dev == priv->mesh_dev) {
390 priv->mesh_open = 1;
391 priv->mesh_connect_status = LBS_CONNECTED;
392 netif_carrier_on(dev);
393 } else {
394 priv->infra_open = 1;
395
396 if (priv->connect_status == LBS_CONNECTED)
397 netif_carrier_on(dev);
398 else
399 netif_carrier_off(dev);
400 }
401
402 if (!priv->tx_pending_len)
403 netif_wake_queue(dev);
404 out:
405
406 spin_unlock_irq(&priv->driver_lock);
407 return ret;
408 }
409
410 /**
411 * @brief This function closes the mshX interface
412 *
413 * @param dev A pointer to net_device structure
414 * @return 0
415 */
416 static int lbs_mesh_stop(struct net_device *dev)
417 {
418 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
419
420 spin_lock_irq(&priv->driver_lock);
421
422 priv->mesh_open = 0;
423 priv->mesh_connect_status = LBS_DISCONNECTED;
424
425 netif_stop_queue(dev);
426 netif_carrier_off(dev);
427
428 spin_unlock_irq(&priv->driver_lock);
429 return 0;
430 }
431
432 /**
433 * @brief This function closes the ethX interface
434 *
435 * @param dev A pointer to net_device structure
436 * @return 0
437 */
438 static int lbs_eth_stop(struct net_device *dev)
439 {
440 struct lbs_private *priv = (struct lbs_private *) dev->priv;
441
442 spin_lock_irq(&priv->driver_lock);
443
444 priv->infra_open = 0;
445
446 netif_stop_queue(dev);
447
448 spin_unlock_irq(&priv->driver_lock);
449 return 0;
450 }
451
452 static void lbs_tx_timeout(struct net_device *dev)
453 {
454 struct lbs_private *priv = (struct lbs_private *) dev->priv;
455
456 lbs_deb_enter(LBS_DEB_TX);
457
458 lbs_pr_err("tx watch dog timeout\n");
459
460 dev->trans_start = jiffies;
461
462 if (priv->currenttxskb) {
463 priv->eventcause = 0x01000000;
464 lbs_send_tx_feedback(priv);
465 }
466 /* XX: Shouldn't we also call into the hw-specific driver
467 to kick it somehow? */
468 lbs_host_to_card_done(priv);
469
470 lbs_deb_leave(LBS_DEB_TX);
471 }
472
473 void lbs_host_to_card_done(struct lbs_private *priv)
474 {
475 unsigned long flags;
476
477 spin_lock_irqsave(&priv->driver_lock, flags);
478
479 priv->dnld_sent = DNLD_RES_RECEIVED;
480
481 /* Wake main thread if commands are pending */
482 if (!priv->cur_cmd)
483 wake_up_interruptible(&priv->waitq);
484
485 /* Don't wake netif queues if we're in monitor mode and
486 a TX packet is already pending, or if there are commands
487 queued to be sent. */
488 if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
489 if (priv->dev && priv->connect_status == LBS_CONNECTED)
490 netif_wake_queue(priv->dev);
491
492 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
493 netif_wake_queue(priv->mesh_dev);
494 }
495 spin_unlock_irqrestore(&priv->driver_lock, flags);
496 }
497 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
498
499 /**
500 * @brief This function returns the network statistics
501 *
502 * @param dev A pointer to struct lbs_private structure
503 * @return A pointer to net_device_stats structure
504 */
505 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
506 {
507 struct lbs_private *priv = (struct lbs_private *) dev->priv;
508
509 return &priv->stats;
510 }
511
512 static int lbs_set_mac_address(struct net_device *dev, void *addr)
513 {
514 int ret = 0;
515 struct lbs_private *priv = (struct lbs_private *) dev->priv;
516 struct sockaddr *phwaddr = addr;
517
518 lbs_deb_enter(LBS_DEB_NET);
519
520 /* In case it was called from the mesh device */
521 dev = priv->dev ;
522
523 memset(priv->current_addr, 0, ETH_ALEN);
524
525 /* dev->dev_addr is 8 bytes */
526 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
527
528 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
529 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
530
531 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
532 CMD_ACT_SET,
533 CMD_OPTION_WAITFORRSP, 0, NULL);
534
535 if (ret) {
536 lbs_deb_net("set MAC address failed\n");
537 ret = -1;
538 goto done;
539 }
540
541 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
542 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
543 if (priv->mesh_dev)
544 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
545
546 done:
547 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
548 return ret;
549 }
550
551 static int lbs_copy_multicast_address(struct lbs_private *priv,
552 struct net_device *dev)
553 {
554 int i = 0;
555 struct dev_mc_list *mcptr = dev->mc_list;
556
557 for (i = 0; i < dev->mc_count; i++) {
558 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
559 mcptr = mcptr->next;
560 }
561
562 return i;
563
564 }
565
566 static void lbs_set_multicast_list(struct net_device *dev)
567 {
568 struct lbs_private *priv = dev->priv;
569 int oldpacketfilter;
570 DECLARE_MAC_BUF(mac);
571
572 lbs_deb_enter(LBS_DEB_NET);
573
574 oldpacketfilter = priv->currentpacketfilter;
575
576 if (dev->flags & IFF_PROMISC) {
577 lbs_deb_net("enable promiscuous mode\n");
578 priv->currentpacketfilter |=
579 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
580 priv->currentpacketfilter &=
581 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
582 CMD_ACT_MAC_MULTICAST_ENABLE);
583 } else {
584 /* Multicast */
585 priv->currentpacketfilter &=
586 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
587
588 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
589 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
590 lbs_deb_net( "enabling all multicast\n");
591 priv->currentpacketfilter |=
592 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
593 priv->currentpacketfilter &=
594 ~CMD_ACT_MAC_MULTICAST_ENABLE;
595 } else {
596 priv->currentpacketfilter &=
597 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
598
599 if (!dev->mc_count) {
600 lbs_deb_net("no multicast addresses, "
601 "disabling multicast\n");
602 priv->currentpacketfilter &=
603 ~CMD_ACT_MAC_MULTICAST_ENABLE;
604 } else {
605 int i;
606
607 priv->currentpacketfilter |=
608 CMD_ACT_MAC_MULTICAST_ENABLE;
609
610 priv->nr_of_multicastmacaddr =
611 lbs_copy_multicast_address(priv, dev);
612
613 lbs_deb_net("multicast addresses: %d\n",
614 dev->mc_count);
615
616 for (i = 0; i < dev->mc_count; i++) {
617 lbs_deb_net("Multicast address %d:%s\n",
618 i, print_mac(mac,
619 priv->multicastlist[i]));
620 }
621 /* send multicast addresses to firmware */
622 lbs_prepare_and_send_command(priv,
623 CMD_MAC_MULTICAST_ADR,
624 CMD_ACT_SET, 0, 0,
625 NULL);
626 }
627 }
628 }
629
630 if (priv->currentpacketfilter != oldpacketfilter) {
631 lbs_set_mac_packet_filter(priv);
632 }
633
634 lbs_deb_leave(LBS_DEB_NET);
635 }
636
637 /**
638 * @brief This function handles the major jobs in the LBS driver.
639 * It handles all events generated by firmware, RX data received
640 * from firmware and TX data sent from kernel.
641 *
642 * @param data A pointer to lbs_thread structure
643 * @return 0
644 */
645 static int lbs_thread(void *data)
646 {
647 struct net_device *dev = data;
648 struct lbs_private *priv = dev->priv;
649 wait_queue_t wait;
650 u8 ireg = 0;
651
652 lbs_deb_enter(LBS_DEB_THREAD);
653
654 init_waitqueue_entry(&wait, current);
655
656 set_freezable();
657
658 for (;;) {
659 int shouldsleep;
660
661 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
662 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
663
664 add_wait_queue(&priv->waitq, &wait);
665 set_current_state(TASK_INTERRUPTIBLE);
666 spin_lock_irq(&priv->driver_lock);
667
668 if (priv->surpriseremoved)
669 shouldsleep = 0; /* Bye */
670 else if (priv->psstate == PS_STATE_SLEEP)
671 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
672 else if (priv->intcounter)
673 shouldsleep = 0; /* Interrupt pending. Deal with it now */
674 else if (priv->dnld_sent)
675 shouldsleep = 1; /* Something is en route to the device already */
676 else if (priv->tx_pending_len > 0)
677 shouldsleep = 0; /* We've a packet to send */
678 else if (priv->cur_cmd)
679 shouldsleep = 1; /* Can't send a command; one already running */
680 else if (!list_empty(&priv->cmdpendingq))
681 shouldsleep = 0; /* We have a command to send */
682 else
683 shouldsleep = 1; /* No command */
684
685 if (shouldsleep) {
686 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
687 priv->connect_status, priv->intcounter,
688 priv->psmode, priv->psstate);
689 spin_unlock_irq(&priv->driver_lock);
690 schedule();
691 } else
692 spin_unlock_irq(&priv->driver_lock);
693
694 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
695 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
696
697 set_current_state(TASK_RUNNING);
698 remove_wait_queue(&priv->waitq, &wait);
699 try_to_freeze();
700
701 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
702 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
703
704 if (kthread_should_stop() || priv->surpriseremoved) {
705 lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
706 priv->surpriseremoved);
707 break;
708 }
709
710
711 spin_lock_irq(&priv->driver_lock);
712
713 if (priv->intcounter) {
714 u8 int_status;
715
716 priv->intcounter = 0;
717 int_status = priv->hw_get_int_status(priv, &ireg);
718
719 if (int_status) {
720 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
721 spin_unlock_irq(&priv->driver_lock);
722 continue;
723 }
724 priv->hisregcpy |= ireg;
725 }
726
727 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
728 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
729
730 /* command response? */
731 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
732 lbs_deb_thread("main-thread: cmd response ready\n");
733
734 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
735 spin_unlock_irq(&priv->driver_lock);
736 lbs_process_rx_command(priv);
737 spin_lock_irq(&priv->driver_lock);
738 }
739
740 /* Any Card Event */
741 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
742 lbs_deb_thread("main-thread: Card Event Activity\n");
743
744 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
745
746 if (priv->hw_read_event_cause(priv)) {
747 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
748 spin_unlock_irq(&priv->driver_lock);
749 continue;
750 }
751 spin_unlock_irq(&priv->driver_lock);
752 lbs_process_event(priv);
753 } else
754 spin_unlock_irq(&priv->driver_lock);
755
756 /* Check if we need to confirm Sleep Request received previously */
757 if (priv->psstate == PS_STATE_PRE_SLEEP &&
758 !priv->dnld_sent && !priv->cur_cmd) {
759 if (priv->connect_status == LBS_CONNECTED) {
760 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
761 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
762
763 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
764 } else {
765 /* workaround for firmware sending
766 * deauth/linkloss event immediately
767 * after sleep request; remove this
768 * after firmware fixes it
769 */
770 priv->psstate = PS_STATE_AWAKE;
771 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
772 }
773 }
774
775 /* The PS state is changed during processing of Sleep Request
776 * event above
777 */
778 if ((priv->psstate == PS_STATE_SLEEP) ||
779 (priv->psstate == PS_STATE_PRE_SLEEP))
780 continue;
781
782 /* Execute the next command */
783 if (!priv->dnld_sent && !priv->cur_cmd)
784 lbs_execute_next_command(priv);
785
786 /* Wake-up command waiters which can't sleep in
787 * lbs_prepare_and_send_command
788 */
789 if (!list_empty(&priv->cmdpendingq))
790 wake_up_all(&priv->cmd_pending);
791
792 spin_lock_irq(&priv->driver_lock);
793 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
794 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
795 priv->tx_pending_buf,
796 priv->tx_pending_len);
797 if (ret) {
798 lbs_deb_tx("host_to_card failed %d\n", ret);
799 priv->dnld_sent = DNLD_RES_RECEIVED;
800 }
801 priv->tx_pending_len = 0;
802 if (!priv->currenttxskb) {
803 /* We can wake the queues immediately if we aren't
804 waiting for TX feedback */
805 if (priv->connect_status == LBS_CONNECTED)
806 netif_wake_queue(priv->dev);
807 if (priv->mesh_dev &&
808 priv->mesh_connect_status == LBS_CONNECTED)
809 netif_wake_queue(priv->mesh_dev);
810 }
811 }
812 spin_unlock_irq(&priv->driver_lock);
813 }
814
815 del_timer(&priv->command_timer);
816 wake_up_all(&priv->cmd_pending);
817
818 lbs_deb_leave(LBS_DEB_THREAD);
819 return 0;
820 }
821
822 /**
823 * @brief This function downloads firmware image, gets
824 * HW spec from firmware and set basic parameters to
825 * firmware.
826 *
827 * @param priv A pointer to struct lbs_private structure
828 * @return 0 or -1
829 */
830 static int lbs_setup_firmware(struct lbs_private *priv)
831 {
832 int ret = -1;
833 struct cmd_ds_mesh_access mesh_access;
834
835 lbs_deb_enter(LBS_DEB_FW);
836
837 /*
838 * Read MAC address from HW
839 */
840 memset(priv->current_addr, 0xff, ETH_ALEN);
841
842 ret = lbs_prepare_and_send_command(priv, CMD_GET_HW_SPEC,
843 0, CMD_OPTION_WAITFORRSP, 0, NULL);
844
845 if (ret) {
846 ret = -1;
847 goto done;
848 }
849
850 lbs_set_mac_packet_filter(priv);
851
852 /* Get the supported Data rates */
853 ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
854 CMD_ACT_GET_TX_RATE,
855 CMD_OPTION_WAITFORRSP, 0, NULL);
856
857 if (ret) {
858 ret = -1;
859 goto done;
860 }
861
862 /* Disable mesh autostart */
863 if (priv->mesh_dev) {
864 memset(&mesh_access, 0, sizeof(mesh_access));
865 mesh_access.data[0] = cpu_to_le32(0);
866 ret = lbs_prepare_and_send_command(priv,
867 CMD_MESH_ACCESS,
868 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
869 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
870 if (ret) {
871 ret = -1;
872 goto done;
873 }
874 priv->mesh_autostart_enabled = 0;
875 }
876
877 ret = 0;
878 done:
879 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
880 return ret;
881 }
882
883 /**
884 * This function handles the timeout of command sending.
885 * It will re-send the same command again.
886 */
887 static void command_timer_fn(unsigned long data)
888 {
889 struct lbs_private *priv = (struct lbs_private *)data;
890 struct cmd_ctrl_node *ptempnode;
891 struct cmd_ds_command *cmd;
892 unsigned long flags;
893
894 ptempnode = priv->cur_cmd;
895 if (ptempnode == NULL) {
896 lbs_deb_fw("ptempnode empty\n");
897 return;
898 }
899
900 cmd = (struct cmd_ds_command *)ptempnode->bufvirtualaddr;
901 if (!cmd) {
902 lbs_deb_fw("cmd is NULL\n");
903 return;
904 }
905
906 lbs_deb_fw("command_timer_fn fired, cmd %x\n", cmd->command);
907
908 if (!priv->fw_ready)
909 return;
910
911 spin_lock_irqsave(&priv->driver_lock, flags);
912 priv->cur_cmd = NULL;
913 spin_unlock_irqrestore(&priv->driver_lock, flags);
914
915 lbs_deb_fw("re-sending same command because of timeout\n");
916 lbs_queue_cmd(priv, ptempnode, 0);
917
918 wake_up_interruptible(&priv->waitq);
919
920 return;
921 }
922
923 static int lbs_init_adapter(struct lbs_private *priv)
924 {
925 size_t bufsize;
926 int i, ret = 0;
927
928 /* Allocate buffer to store the BSSID list */
929 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
930 priv->networks = kzalloc(bufsize, GFP_KERNEL);
931 if (!priv->networks) {
932 lbs_pr_err("Out of memory allocating beacons\n");
933 ret = -1;
934 goto out;
935 }
936
937 /* Initialize scan result lists */
938 INIT_LIST_HEAD(&priv->network_free_list);
939 INIT_LIST_HEAD(&priv->network_list);
940 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
941 list_add_tail(&priv->networks[i].list,
942 &priv->network_free_list);
943 }
944
945 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
946 priv->lbs_ps_confirm_sleep.command =
947 cpu_to_le16(CMD_802_11_PS_MODE);
948 priv->lbs_ps_confirm_sleep.size =
949 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
950 priv->lbs_ps_confirm_sleep.action =
951 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
952
953 memset(priv->current_addr, 0xff, ETH_ALEN);
954
955 priv->connect_status = LBS_DISCONNECTED;
956 priv->mesh_connect_status = LBS_DISCONNECTED;
957 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
958 priv->mode = IW_MODE_INFRA;
959 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
960 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
961 priv->radioon = RADIO_ON;
962 priv->auto_rate = 1;
963 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
964 priv->psmode = LBS802_11POWERMODECAM;
965 priv->psstate = PS_STATE_FULL_POWER;
966
967 mutex_init(&priv->lock);
968
969 setup_timer(&priv->command_timer, command_timer_fn,
970 (unsigned long)priv);
971
972 INIT_LIST_HEAD(&priv->cmdfreeq);
973 INIT_LIST_HEAD(&priv->cmdpendingq);
974
975 spin_lock_init(&priv->driver_lock);
976 init_waitqueue_head(&priv->cmd_pending);
977
978 /* Allocate the command buffers */
979 if (lbs_allocate_cmd_buffer(priv)) {
980 lbs_pr_err("Out of memory allocating command buffers\n");
981 ret = -1;
982 }
983
984 out:
985 return ret;
986 }
987
988 static void lbs_free_adapter(struct lbs_private *priv)
989 {
990 lbs_deb_fw("free command buffer\n");
991 lbs_free_cmd_buffer(priv);
992
993 lbs_deb_fw("free command_timer\n");
994 del_timer(&priv->command_timer);
995
996 lbs_deb_fw("free scan results table\n");
997 kfree(priv->networks);
998 priv->networks = NULL;
999 }
1000
1001 /**
1002 * @brief This function adds the card. it will probe the
1003 * card, allocate the lbs_priv and initialize the device.
1004 *
1005 * @param card A pointer to card
1006 * @return A pointer to struct lbs_private structure
1007 */
1008 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1009 {
1010 struct net_device *dev = NULL;
1011 struct lbs_private *priv = NULL;
1012
1013 lbs_deb_enter(LBS_DEB_NET);
1014
1015 /* Allocate an Ethernet device and register it */
1016 dev = alloc_etherdev(sizeof(struct lbs_private));
1017 if (!dev) {
1018 lbs_pr_err("init ethX device failed\n");
1019 goto done;
1020 }
1021 priv = dev->priv;
1022
1023 if (lbs_init_adapter(priv)) {
1024 lbs_pr_err("failed to initialize adapter structure.\n");
1025 goto err_init_adapter;
1026 }
1027
1028 priv->dev = dev;
1029 priv->card = card;
1030 priv->mesh_open = 0;
1031 priv->infra_open = 0;
1032
1033 /* Setup the OS Interface to our functions */
1034 dev->open = lbs_dev_open;
1035 dev->hard_start_xmit = lbs_hard_start_xmit;
1036 dev->stop = lbs_eth_stop;
1037 dev->set_mac_address = lbs_set_mac_address;
1038 dev->tx_timeout = lbs_tx_timeout;
1039 dev->get_stats = lbs_get_stats;
1040 dev->watchdog_timeo = 5 * HZ;
1041 dev->ethtool_ops = &lbs_ethtool_ops;
1042 #ifdef WIRELESS_EXT
1043 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1044 #endif
1045 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1046 dev->set_multicast_list = lbs_set_multicast_list;
1047
1048 SET_NETDEV_DEV(dev, dmdev);
1049
1050 priv->rtap_net_dev = NULL;
1051
1052 lbs_deb_thread("Starting main thread...\n");
1053 init_waitqueue_head(&priv->waitq);
1054 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1055 if (IS_ERR(priv->main_thread)) {
1056 lbs_deb_thread("Error creating main thread.\n");
1057 goto err_init_adapter;
1058 }
1059
1060 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1061 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1062 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1063 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1064
1065 goto done;
1066
1067 err_init_adapter:
1068 lbs_free_adapter(priv);
1069 free_netdev(dev);
1070 priv = NULL;
1071
1072 done:
1073 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1074 return priv;
1075 }
1076 EXPORT_SYMBOL_GPL(lbs_add_card);
1077
1078
1079 int lbs_remove_card(struct lbs_private *priv)
1080 {
1081 struct net_device *dev = priv->dev;
1082 union iwreq_data wrqu;
1083
1084 lbs_deb_enter(LBS_DEB_MAIN);
1085
1086 lbs_remove_rtap(priv);
1087
1088 dev = priv->dev;
1089 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1090
1091 cancel_delayed_work(&priv->scan_work);
1092 cancel_delayed_work(&priv->assoc_work);
1093 destroy_workqueue(priv->work_thread);
1094
1095 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1096 priv->psmode = LBS802_11POWERMODECAM;
1097 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1098 }
1099
1100 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1101 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1102 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1103
1104 /* Stop the thread servicing the interrupts */
1105 priv->surpriseremoved = 1;
1106 kthread_stop(priv->main_thread);
1107
1108 lbs_free_adapter(priv);
1109
1110 priv->dev = NULL;
1111 free_netdev(dev);
1112
1113 lbs_deb_leave(LBS_DEB_MAIN);
1114 return 0;
1115 }
1116 EXPORT_SYMBOL_GPL(lbs_remove_card);
1117
1118
1119 int lbs_start_card(struct lbs_private *priv)
1120 {
1121 struct net_device *dev = priv->dev;
1122 int ret = -1;
1123
1124 lbs_deb_enter(LBS_DEB_MAIN);
1125
1126 /* poke the firmware */
1127 ret = lbs_setup_firmware(priv);
1128 if (ret)
1129 goto done;
1130
1131 /* init 802.11d */
1132 lbs_init_11d(priv);
1133
1134 if (register_netdev(dev)) {
1135 lbs_pr_err("cannot register ethX device\n");
1136 goto done;
1137 }
1138 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1139 lbs_pr_err("cannot register lbs_rtap attribute\n");
1140
1141 lbs_debugfs_init_one(priv, dev);
1142
1143 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1144
1145 ret = 0;
1146
1147 done:
1148 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1149 return ret;
1150 }
1151 EXPORT_SYMBOL_GPL(lbs_start_card);
1152
1153
1154 int lbs_stop_card(struct lbs_private *priv)
1155 {
1156 struct net_device *dev = priv->dev;
1157 int ret = -1;
1158 struct cmd_ctrl_node *cmdnode;
1159 unsigned long flags;
1160
1161 lbs_deb_enter(LBS_DEB_MAIN);
1162
1163 netif_stop_queue(priv->dev);
1164 netif_carrier_off(priv->dev);
1165
1166 lbs_debugfs_remove_one(priv);
1167
1168 /* Flush pending command nodes */
1169 spin_lock_irqsave(&priv->driver_lock, flags);
1170 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1171 cmdnode->cmdwaitqwoken = 1;
1172 wake_up_interruptible(&cmdnode->cmdwait_q);
1173 }
1174 spin_unlock_irqrestore(&priv->driver_lock, flags);
1175
1176 unregister_netdev(dev);
1177
1178 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1179 return ret;
1180 }
1181 EXPORT_SYMBOL_GPL(lbs_stop_card);
1182
1183
1184 /**
1185 * @brief This function adds mshX interface
1186 *
1187 * @param priv A pointer to the struct lbs_private structure
1188 * @return 0 if successful, -X otherwise
1189 */
1190 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1191 {
1192 struct net_device *mesh_dev = NULL;
1193 int ret = 0;
1194
1195 lbs_deb_enter(LBS_DEB_MESH);
1196
1197 /* Allocate a virtual mesh device */
1198 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1199 lbs_deb_mesh("init mshX device failed\n");
1200 ret = -ENOMEM;
1201 goto done;
1202 }
1203 mesh_dev->priv = priv;
1204 priv->mesh_dev = mesh_dev;
1205
1206 mesh_dev->open = lbs_dev_open;
1207 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1208 mesh_dev->stop = lbs_mesh_stop;
1209 mesh_dev->get_stats = lbs_get_stats;
1210 mesh_dev->set_mac_address = lbs_set_mac_address;
1211 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1212 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1213 sizeof(priv->dev->dev_addr));
1214
1215 SET_NETDEV_DEV(priv->mesh_dev, dev);
1216
1217 #ifdef WIRELESS_EXT
1218 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1219 #endif
1220 /* Register virtual mesh interface */
1221 ret = register_netdev(mesh_dev);
1222 if (ret) {
1223 lbs_pr_err("cannot register mshX virtual interface\n");
1224 goto err_free;
1225 }
1226
1227 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1228 if (ret)
1229 goto err_unregister;
1230
1231 /* Everything successful */
1232 ret = 0;
1233 goto done;
1234
1235 err_unregister:
1236 unregister_netdev(mesh_dev);
1237
1238 err_free:
1239 free_netdev(mesh_dev);
1240
1241 done:
1242 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1243 return ret;
1244 }
1245 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1246
1247
1248 void lbs_remove_mesh(struct lbs_private *priv)
1249 {
1250 struct net_device *mesh_dev;
1251
1252 lbs_deb_enter(LBS_DEB_MAIN);
1253
1254 if (!priv)
1255 goto out;
1256
1257 mesh_dev = priv->mesh_dev;
1258
1259 netif_stop_queue(mesh_dev);
1260 netif_carrier_off(priv->mesh_dev);
1261
1262 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1263 unregister_netdev(mesh_dev);
1264
1265 priv->mesh_dev = NULL ;
1266 free_netdev(mesh_dev);
1267
1268 out:
1269 lbs_deb_leave(LBS_DEB_MAIN);
1270 }
1271 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1272
1273 /**
1274 * @brief This function finds the CFP in
1275 * region_cfp_table based on region and band parameter.
1276 *
1277 * @param region The region code
1278 * @param band The band
1279 * @param cfp_no A pointer to CFP number
1280 * @return A pointer to CFP
1281 */
1282 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1283 {
1284 int i, end;
1285
1286 lbs_deb_enter(LBS_DEB_MAIN);
1287
1288 end = ARRAY_SIZE(region_cfp_table);
1289
1290 for (i = 0; i < end ; i++) {
1291 lbs_deb_main("region_cfp_table[i].region=%d\n",
1292 region_cfp_table[i].region);
1293 if (region_cfp_table[i].region == region) {
1294 *cfp_no = region_cfp_table[i].cfp_no_BG;
1295 lbs_deb_leave(LBS_DEB_MAIN);
1296 return region_cfp_table[i].cfp_BG;
1297 }
1298 }
1299
1300 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1301 return NULL;
1302 }
1303
1304 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1305 {
1306 int ret = 0;
1307 int i = 0;
1308
1309 struct chan_freq_power *cfp;
1310 int cfp_no;
1311
1312 lbs_deb_enter(LBS_DEB_MAIN);
1313
1314 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1315
1316 {
1317 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1318 if (cfp != NULL) {
1319 priv->region_channel[i].nrcfp = cfp_no;
1320 priv->region_channel[i].CFP = cfp;
1321 } else {
1322 lbs_deb_main("wrong region code %#x in band B/G\n",
1323 region);
1324 ret = -1;
1325 goto out;
1326 }
1327 priv->region_channel[i].valid = 1;
1328 priv->region_channel[i].region = region;
1329 priv->region_channel[i].band = band;
1330 i++;
1331 }
1332 out:
1333 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1334 return ret;
1335 }
1336
1337 /**
1338 * @brief This function handles the interrupt. it will change PS
1339 * state if applicable. it will wake up main_thread to handle
1340 * the interrupt event as well.
1341 *
1342 * @param dev A pointer to net_device structure
1343 * @return n/a
1344 */
1345 void lbs_interrupt(struct lbs_private *priv)
1346 {
1347 lbs_deb_enter(LBS_DEB_THREAD);
1348
1349 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1350
1351 if (spin_trylock(&priv->driver_lock)) {
1352 spin_unlock(&priv->driver_lock);
1353 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1354 WARN_ON(1);
1355 }
1356
1357 priv->intcounter++;
1358
1359 if (priv->psstate == PS_STATE_SLEEP)
1360 priv->psstate = PS_STATE_AWAKE;
1361
1362 wake_up_interruptible(&priv->waitq);
1363
1364 lbs_deb_leave(LBS_DEB_THREAD);
1365 }
1366 EXPORT_SYMBOL_GPL(lbs_interrupt);
1367
1368 int lbs_reset_device(struct lbs_private *priv)
1369 {
1370 int ret;
1371
1372 lbs_deb_enter(LBS_DEB_MAIN);
1373 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1374 CMD_ACT_HALT, 0, 0, NULL);
1375 msleep_interruptible(10);
1376
1377 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1378 return ret;
1379 }
1380 EXPORT_SYMBOL_GPL(lbs_reset_device);
1381
1382 static int __init lbs_init_module(void)
1383 {
1384 lbs_deb_enter(LBS_DEB_MAIN);
1385 lbs_debugfs_init();
1386 lbs_deb_leave(LBS_DEB_MAIN);
1387 return 0;
1388 }
1389
1390 static void __exit lbs_exit_module(void)
1391 {
1392 lbs_deb_enter(LBS_DEB_MAIN);
1393
1394 lbs_debugfs_remove();
1395
1396 lbs_deb_leave(LBS_DEB_MAIN);
1397 }
1398
1399 /*
1400 * rtap interface support fuctions
1401 */
1402
1403 static int lbs_rtap_open(struct net_device *dev)
1404 {
1405 /* Yes, _stop_ the queue. Because we don't support injection */
1406 netif_carrier_off(dev);
1407 netif_stop_queue(dev);
1408 return 0;
1409 }
1410
1411 static int lbs_rtap_stop(struct net_device *dev)
1412 {
1413 return 0;
1414 }
1415
1416 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1417 {
1418 netif_stop_queue(dev);
1419 return NETDEV_TX_BUSY;
1420 }
1421
1422 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1423 {
1424 struct lbs_private *priv = dev->priv;
1425 return &priv->stats;
1426 }
1427
1428
1429 void lbs_remove_rtap(struct lbs_private *priv)
1430 {
1431 if (priv->rtap_net_dev == NULL)
1432 return;
1433 unregister_netdev(priv->rtap_net_dev);
1434 free_netdev(priv->rtap_net_dev);
1435 priv->rtap_net_dev = NULL;
1436 }
1437
1438 int lbs_add_rtap(struct lbs_private *priv)
1439 {
1440 int rc = 0;
1441 struct net_device *rtap_dev;
1442
1443 if (priv->rtap_net_dev)
1444 return -EPERM;
1445
1446 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1447 if (rtap_dev == NULL)
1448 return -ENOMEM;
1449
1450 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1451 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1452 rtap_dev->open = lbs_rtap_open;
1453 rtap_dev->stop = lbs_rtap_stop;
1454 rtap_dev->get_stats = lbs_rtap_get_stats;
1455 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1456 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1457 rtap_dev->priv = priv;
1458
1459 rc = register_netdev(rtap_dev);
1460 if (rc) {
1461 free_netdev(rtap_dev);
1462 return rc;
1463 }
1464 priv->rtap_net_dev = rtap_dev;
1465
1466 return 0;
1467 }
1468
1469
1470 module_init(lbs_init_module);
1471 module_exit(lbs_exit_module);
1472
1473 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1474 MODULE_AUTHOR("Marvell International Ltd.");
1475 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree