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clean up after staging packages
[openwrt.git] / package / libertas / src / main.c
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 static int lbs_add_rtap(struct lbs_private *priv);
256 static void lbs_remove_rtap(struct lbs_private *priv);
257 static int lbs_add_mesh(struct lbs_private *priv);
258 static void lbs_remove_mesh(struct lbs_private *priv);
259
260
261 /**
262 * Get function for sysfs attribute rtap
263 */
264 static ssize_t lbs_rtap_get(struct device *dev,
265 struct device_attribute *attr, char * buf)
266 {
267 struct lbs_private *priv = to_net_dev(dev)->priv;
268 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
269 }
270
271 /**
272 * Set function for sysfs attribute rtap
273 */
274 static ssize_t lbs_rtap_set(struct device *dev,
275 struct device_attribute *attr, const char * buf, size_t count)
276 {
277 int monitor_mode;
278 struct lbs_private *priv = to_net_dev(dev)->priv;
279
280 sscanf(buf, "%x", &monitor_mode);
281 if (monitor_mode != LBS_MONITOR_OFF) {
282 if(priv->monitormode == monitor_mode)
283 return strlen(buf);
284 if (priv->monitormode == LBS_MONITOR_OFF) {
285 if (priv->infra_open || priv->mesh_open)
286 return -EBUSY;
287 if (priv->mode == IW_MODE_INFRA)
288 lbs_send_deauthentication(priv);
289 else if (priv->mode == IW_MODE_ADHOC)
290 lbs_stop_adhoc_network(priv);
291 lbs_add_rtap(priv);
292 }
293 priv->monitormode = monitor_mode;
294 }
295
296 else {
297 if (priv->monitormode == LBS_MONITOR_OFF)
298 return strlen(buf);
299 priv->monitormode = LBS_MONITOR_OFF;
300 lbs_remove_rtap(priv);
301
302 if (priv->currenttxskb) {
303 dev_kfree_skb_any(priv->currenttxskb);
304 priv->currenttxskb = NULL;
305 }
306
307 /* Wake queues, command thread, etc. */
308 lbs_host_to_card_done(priv);
309 }
310
311 lbs_prepare_and_send_command(priv,
312 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
313 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
314 return strlen(buf);
315 }
316
317 /**
318 * lbs_rtap attribute to be exported per ethX interface
319 * through sysfs (/sys/class/net/ethX/lbs_rtap)
320 */
321 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
322
323 /**
324 * Get function for sysfs attribute mesh
325 */
326 static ssize_t lbs_mesh_get(struct device *dev,
327 struct device_attribute *attr, char * buf)
328 {
329 struct lbs_private *priv = to_net_dev(dev)->priv;
330 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
331 }
332
333 /**
334 * Set function for sysfs attribute mesh
335 */
336 static ssize_t lbs_mesh_set(struct device *dev,
337 struct device_attribute *attr, const char * buf, size_t count)
338 {
339 struct lbs_private *priv = to_net_dev(dev)->priv;
340 int enable;
341 int ret;
342
343 sscanf(buf, "%x", &enable);
344 enable = !!enable;
345 if (enable == !!priv->mesh_dev)
346 return count;
347
348 ret = lbs_mesh_config(priv, enable);
349 if (ret)
350 return ret;
351
352 if (enable)
353 lbs_add_mesh(priv);
354 else
355 lbs_remove_mesh(priv);
356
357 return count;
358 }
359
360 /**
361 * lbs_mesh attribute to be exported per ethX interface
362 * through sysfs (/sys/class/net/ethX/lbs_mesh)
363 */
364 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
365
366 /**
367 * anycast_mask attribute to be exported per mshX interface
368 * through sysfs (/sys/class/net/mshX/anycast_mask)
369 */
370 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
371
372 static struct attribute *lbs_mesh_sysfs_entries[] = {
373 &dev_attr_anycast_mask.attr,
374 NULL,
375 };
376
377 static struct attribute_group lbs_mesh_attr_group = {
378 .attrs = lbs_mesh_sysfs_entries,
379 };
380
381 /**
382 * @brief This function opens the ethX or mshX interface
383 *
384 * @param dev A pointer to net_device structure
385 * @return 0 or -EBUSY if monitor mode active
386 */
387 static int lbs_dev_open(struct net_device *dev)
388 {
389 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
390 int ret = 0;
391
392 spin_lock_irq(&priv->driver_lock);
393
394 if (priv->monitormode != LBS_MONITOR_OFF) {
395 ret = -EBUSY;
396 goto out;
397 }
398
399 if (dev == priv->mesh_dev) {
400 priv->mesh_open = 1;
401 priv->mesh_connect_status = LBS_CONNECTED;
402 netif_carrier_on(dev);
403 } else {
404 priv->infra_open = 1;
405
406 if (priv->connect_status == LBS_CONNECTED)
407 netif_carrier_on(dev);
408 else
409 netif_carrier_off(dev);
410 }
411
412 if (!priv->tx_pending_len)
413 netif_wake_queue(dev);
414 out:
415
416 spin_unlock_irq(&priv->driver_lock);
417 return ret;
418 }
419
420 /**
421 * @brief This function closes the mshX interface
422 *
423 * @param dev A pointer to net_device structure
424 * @return 0
425 */
426 static int lbs_mesh_stop(struct net_device *dev)
427 {
428 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
429
430 spin_lock_irq(&priv->driver_lock);
431
432 priv->mesh_open = 0;
433 priv->mesh_connect_status = LBS_DISCONNECTED;
434
435 netif_stop_queue(dev);
436 netif_carrier_off(dev);
437
438 spin_unlock_irq(&priv->driver_lock);
439 return 0;
440 }
441
442 /**
443 * @brief This function closes the ethX interface
444 *
445 * @param dev A pointer to net_device structure
446 * @return 0
447 */
448 static int lbs_eth_stop(struct net_device *dev)
449 {
450 struct lbs_private *priv = (struct lbs_private *) dev->priv;
451
452 spin_lock_irq(&priv->driver_lock);
453
454 priv->infra_open = 0;
455
456 netif_stop_queue(dev);
457
458 spin_unlock_irq(&priv->driver_lock);
459 return 0;
460 }
461
462 static void lbs_tx_timeout(struct net_device *dev)
463 {
464 struct lbs_private *priv = (struct lbs_private *) dev->priv;
465
466 lbs_deb_enter(LBS_DEB_TX);
467
468 lbs_pr_err("tx watch dog timeout\n");
469
470 dev->trans_start = jiffies;
471
472 if (priv->currenttxskb) {
473 priv->eventcause = 0x01000000;
474 lbs_send_tx_feedback(priv);
475 }
476 /* XX: Shouldn't we also call into the hw-specific driver
477 to kick it somehow? */
478 lbs_host_to_card_done(priv);
479
480 lbs_deb_leave(LBS_DEB_TX);
481 }
482
483 void lbs_host_to_card_done(struct lbs_private *priv)
484 {
485 unsigned long flags;
486
487 spin_lock_irqsave(&priv->driver_lock, flags);
488
489 priv->dnld_sent = DNLD_RES_RECEIVED;
490
491 /* Wake main thread if commands are pending */
492 if (!priv->cur_cmd)
493 wake_up_interruptible(&priv->waitq);
494
495 /* Don't wake netif queues if we're in monitor mode and
496 a TX packet is already pending, or if there are commands
497 queued to be sent. */
498 if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
499 if (priv->dev && priv->connect_status == LBS_CONNECTED)
500 netif_wake_queue(priv->dev);
501
502 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
503 netif_wake_queue(priv->mesh_dev);
504 }
505 spin_unlock_irqrestore(&priv->driver_lock, flags);
506 }
507 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
508
509 /**
510 * @brief This function returns the network statistics
511 *
512 * @param dev A pointer to struct lbs_private structure
513 * @return A pointer to net_device_stats structure
514 */
515 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
516 {
517 struct lbs_private *priv = (struct lbs_private *) dev->priv;
518
519 return &priv->stats;
520 }
521
522 static int lbs_set_mac_address(struct net_device *dev, void *addr)
523 {
524 int ret = 0;
525 struct lbs_private *priv = (struct lbs_private *) dev->priv;
526 struct sockaddr *phwaddr = addr;
527
528 lbs_deb_enter(LBS_DEB_NET);
529
530 /* In case it was called from the mesh device */
531 dev = priv->dev ;
532
533 memset(priv->current_addr, 0, ETH_ALEN);
534
535 /* dev->dev_addr is 8 bytes */
536 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
537
538 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
539 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
540
541 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
542 CMD_ACT_SET,
543 CMD_OPTION_WAITFORRSP, 0, NULL);
544
545 if (ret) {
546 lbs_deb_net("set MAC address failed\n");
547 ret = -1;
548 goto done;
549 }
550
551 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
552 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
553 if (priv->mesh_dev)
554 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
555
556 done:
557 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
558 return ret;
559 }
560
561 static int lbs_copy_multicast_address(struct lbs_private *priv,
562 struct net_device *dev)
563 {
564 int i = 0;
565 struct dev_mc_list *mcptr = dev->mc_list;
566
567 for (i = 0; i < dev->mc_count; i++) {
568 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
569 mcptr = mcptr->next;
570 }
571
572 return i;
573
574 }
575
576 static void lbs_set_multicast_list(struct net_device *dev)
577 {
578 struct lbs_private *priv = dev->priv;
579 int oldpacketfilter;
580 DECLARE_MAC_BUF(mac);
581
582 lbs_deb_enter(LBS_DEB_NET);
583
584 oldpacketfilter = priv->currentpacketfilter;
585
586 if (dev->flags & IFF_PROMISC) {
587 lbs_deb_net("enable promiscuous mode\n");
588 priv->currentpacketfilter |=
589 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
590 priv->currentpacketfilter &=
591 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
592 CMD_ACT_MAC_MULTICAST_ENABLE);
593 } else {
594 /* Multicast */
595 priv->currentpacketfilter &=
596 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
597
598 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
599 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
600 lbs_deb_net( "enabling all multicast\n");
601 priv->currentpacketfilter |=
602 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
603 priv->currentpacketfilter &=
604 ~CMD_ACT_MAC_MULTICAST_ENABLE;
605 } else {
606 priv->currentpacketfilter &=
607 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
608
609 if (!dev->mc_count) {
610 lbs_deb_net("no multicast addresses, "
611 "disabling multicast\n");
612 priv->currentpacketfilter &=
613 ~CMD_ACT_MAC_MULTICAST_ENABLE;
614 } else {
615 int i;
616
617 priv->currentpacketfilter |=
618 CMD_ACT_MAC_MULTICAST_ENABLE;
619
620 priv->nr_of_multicastmacaddr =
621 lbs_copy_multicast_address(priv, dev);
622
623 lbs_deb_net("multicast addresses: %d\n",
624 dev->mc_count);
625
626 for (i = 0; i < dev->mc_count; i++) {
627 lbs_deb_net("Multicast address %d:%s\n",
628 i, print_mac(mac,
629 priv->multicastlist[i]));
630 }
631 /* send multicast addresses to firmware */
632 lbs_prepare_and_send_command(priv,
633 CMD_MAC_MULTICAST_ADR,
634 CMD_ACT_SET, 0, 0,
635 NULL);
636 }
637 }
638 }
639
640 if (priv->currentpacketfilter != oldpacketfilter) {
641 lbs_set_mac_packet_filter(priv);
642 }
643
644 lbs_deb_leave(LBS_DEB_NET);
645 }
646
647 /**
648 * @brief This function handles the major jobs in the LBS driver.
649 * It handles all events generated by firmware, RX data received
650 * from firmware and TX data sent from kernel.
651 *
652 * @param data A pointer to lbs_thread structure
653 * @return 0
654 */
655 static int lbs_thread(void *data)
656 {
657 struct net_device *dev = data;
658 struct lbs_private *priv = dev->priv;
659 wait_queue_t wait;
660 u8 ireg = 0;
661
662 lbs_deb_enter(LBS_DEB_THREAD);
663
664 init_waitqueue_entry(&wait, current);
665
666 set_freezable();
667
668 for (;;) {
669 int shouldsleep;
670
671 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
672 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
673
674 add_wait_queue(&priv->waitq, &wait);
675 set_current_state(TASK_INTERRUPTIBLE);
676 spin_lock_irq(&priv->driver_lock);
677
678 if (priv->surpriseremoved)
679 shouldsleep = 0; /* Bye */
680 else if (priv->psstate == PS_STATE_SLEEP)
681 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
682 else if (priv->intcounter)
683 shouldsleep = 0; /* Interrupt pending. Deal with it now */
684 else if (!priv->fw_ready)
685 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
686 else if (priv->dnld_sent)
687 shouldsleep = 1; /* Something is en route to the device already */
688 else if (priv->tx_pending_len > 0)
689 shouldsleep = 0; /* We've a packet to send */
690 else if (priv->cur_cmd)
691 shouldsleep = 1; /* Can't send a command; one already running */
692 else if (!list_empty(&priv->cmdpendingq))
693 shouldsleep = 0; /* We have a command to send */
694 else
695 shouldsleep = 1; /* No command */
696
697 if (shouldsleep) {
698 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
699 priv->connect_status, priv->intcounter,
700 priv->psmode, priv->psstate);
701 spin_unlock_irq(&priv->driver_lock);
702 schedule();
703 } else
704 spin_unlock_irq(&priv->driver_lock);
705
706 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
707 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
708
709 set_current_state(TASK_RUNNING);
710 remove_wait_queue(&priv->waitq, &wait);
711 try_to_freeze();
712
713 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
714 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
715
716 if (kthread_should_stop() || priv->surpriseremoved) {
717 lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
718 priv->surpriseremoved);
719 break;
720 }
721
722
723 spin_lock_irq(&priv->driver_lock);
724
725 if (priv->intcounter) {
726 u8 int_status;
727
728 priv->intcounter = 0;
729 int_status = priv->hw_get_int_status(priv, &ireg);
730
731 if (int_status) {
732 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
733 spin_unlock_irq(&priv->driver_lock);
734 continue;
735 }
736 priv->hisregcpy |= ireg;
737 }
738
739 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
740 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
741
742 /* command response? */
743 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
744 lbs_deb_thread("main-thread: cmd response ready\n");
745
746 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
747 spin_unlock_irq(&priv->driver_lock);
748 lbs_process_rx_command(priv);
749 spin_lock_irq(&priv->driver_lock);
750 }
751
752 /* Any Card Event */
753 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
754 lbs_deb_thread("main-thread: Card Event Activity\n");
755
756 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
757
758 if (priv->hw_read_event_cause(priv)) {
759 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
760 spin_unlock_irq(&priv->driver_lock);
761 continue;
762 }
763 spin_unlock_irq(&priv->driver_lock);
764 lbs_process_event(priv);
765 } else
766 spin_unlock_irq(&priv->driver_lock);
767
768 if (!priv->fw_ready)
769 continue;
770
771 /* Check if we need to confirm Sleep Request received previously */
772 if (priv->psstate == PS_STATE_PRE_SLEEP &&
773 !priv->dnld_sent && !priv->cur_cmd) {
774 if (priv->connect_status == LBS_CONNECTED) {
775 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
776 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
777
778 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
779 } else {
780 /* workaround for firmware sending
781 * deauth/linkloss event immediately
782 * after sleep request; remove this
783 * after firmware fixes it
784 */
785 priv->psstate = PS_STATE_AWAKE;
786 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
787 }
788 }
789
790 /* The PS state is changed during processing of Sleep Request
791 * event above
792 */
793 if ((priv->psstate == PS_STATE_SLEEP) ||
794 (priv->psstate == PS_STATE_PRE_SLEEP))
795 continue;
796
797 /* Execute the next command */
798 if (!priv->dnld_sent && !priv->cur_cmd)
799 lbs_execute_next_command(priv);
800
801 /* Wake-up command waiters which can't sleep in
802 * lbs_prepare_and_send_command
803 */
804 if (!list_empty(&priv->cmdpendingq))
805 wake_up_all(&priv->cmd_pending);
806
807 spin_lock_irq(&priv->driver_lock);
808 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
809 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
810 priv->tx_pending_buf,
811 priv->tx_pending_len);
812 if (ret) {
813 lbs_deb_tx("host_to_card failed %d\n", ret);
814 priv->dnld_sent = DNLD_RES_RECEIVED;
815 }
816 priv->tx_pending_len = 0;
817 if (!priv->currenttxskb) {
818 /* We can wake the queues immediately if we aren't
819 waiting for TX feedback */
820 if (priv->connect_status == LBS_CONNECTED)
821 netif_wake_queue(priv->dev);
822 if (priv->mesh_dev &&
823 priv->mesh_connect_status == LBS_CONNECTED)
824 netif_wake_queue(priv->mesh_dev);
825 }
826 }
827 spin_unlock_irq(&priv->driver_lock);
828 }
829
830 del_timer(&priv->command_timer);
831 wake_up_all(&priv->cmd_pending);
832
833 lbs_deb_leave(LBS_DEB_THREAD);
834 return 0;
835 }
836
837 /**
838 * @brief This function downloads firmware image, gets
839 * HW spec from firmware and set basic parameters to
840 * firmware.
841 *
842 * @param priv A pointer to struct lbs_private structure
843 * @return 0 or -1
844 */
845 static int lbs_setup_firmware(struct lbs_private *priv)
846 {
847 int ret = -1;
848
849 lbs_deb_enter(LBS_DEB_FW);
850
851 /*
852 * Read MAC address from HW
853 */
854 memset(priv->current_addr, 0xff, ETH_ALEN);
855 ret = lbs_update_hw_spec(priv);
856 if (ret) {
857 ret = -1;
858 goto done;
859 }
860
861 lbs_set_mac_packet_filter(priv);
862
863 ret = lbs_get_data_rate(priv);
864 if (ret < 0) {
865 ret = -1;
866 goto done;
867 }
868
869 ret = 0;
870 done:
871 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
872 return ret;
873 }
874
875 /**
876 * This function handles the timeout of command sending.
877 * It will re-send the same command again.
878 */
879 static void command_timer_fn(unsigned long data)
880 {
881 struct lbs_private *priv = (struct lbs_private *)data;
882 struct cmd_ctrl_node *node;
883 unsigned long flags;
884
885 node = priv->cur_cmd;
886 if (node == NULL) {
887 lbs_deb_fw("ptempnode empty\n");
888 return;
889 }
890
891 if (!node->cmdbuf) {
892 lbs_deb_fw("cmd is NULL\n");
893 return;
894 }
895
896 lbs_deb_fw("command_timer_fn fired, cmd %x\n", node->cmdbuf->command);
897
898 if (!priv->fw_ready)
899 return;
900
901 spin_lock_irqsave(&priv->driver_lock, flags);
902 priv->cur_cmd = NULL;
903 spin_unlock_irqrestore(&priv->driver_lock, flags);
904
905 lbs_deb_fw("re-sending same command because of timeout\n");
906 lbs_queue_cmd(priv, node, 0);
907
908 wake_up_interruptible(&priv->waitq);
909
910 return;
911 }
912
913 static int lbs_init_adapter(struct lbs_private *priv)
914 {
915 size_t bufsize;
916 int i, ret = 0;
917
918 /* Allocate buffer to store the BSSID list */
919 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
920 priv->networks = kzalloc(bufsize, GFP_KERNEL);
921 if (!priv->networks) {
922 lbs_pr_err("Out of memory allocating beacons\n");
923 ret = -1;
924 goto out;
925 }
926
927 /* Initialize scan result lists */
928 INIT_LIST_HEAD(&priv->network_free_list);
929 INIT_LIST_HEAD(&priv->network_list);
930 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
931 list_add_tail(&priv->networks[i].list,
932 &priv->network_free_list);
933 }
934
935 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
936 priv->lbs_ps_confirm_sleep.command =
937 cpu_to_le16(CMD_802_11_PS_MODE);
938 priv->lbs_ps_confirm_sleep.size =
939 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
940 priv->lbs_ps_confirm_sleep.action =
941 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
942
943 memset(priv->current_addr, 0xff, ETH_ALEN);
944
945 priv->connect_status = LBS_DISCONNECTED;
946 priv->mesh_connect_status = LBS_DISCONNECTED;
947 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
948 priv->mode = IW_MODE_INFRA;
949 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
950 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
951 priv->radioon = RADIO_ON;
952 priv->auto_rate = 1;
953 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
954 priv->psmode = LBS802_11POWERMODECAM;
955 priv->psstate = PS_STATE_FULL_POWER;
956
957 mutex_init(&priv->lock);
958
959 setup_timer(&priv->command_timer, command_timer_fn,
960 (unsigned long)priv);
961
962 INIT_LIST_HEAD(&priv->cmdfreeq);
963 INIT_LIST_HEAD(&priv->cmdpendingq);
964
965 spin_lock_init(&priv->driver_lock);
966 init_waitqueue_head(&priv->cmd_pending);
967
968 /* Allocate the command buffers */
969 if (lbs_allocate_cmd_buffer(priv)) {
970 lbs_pr_err("Out of memory allocating command buffers\n");
971 ret = -1;
972 }
973
974 out:
975 return ret;
976 }
977
978 static void lbs_free_adapter(struct lbs_private *priv)
979 {
980 lbs_deb_fw("free command buffer\n");
981 lbs_free_cmd_buffer(priv);
982
983 lbs_deb_fw("free command_timer\n");
984 del_timer(&priv->command_timer);
985
986 lbs_deb_fw("free scan results table\n");
987 kfree(priv->networks);
988 priv->networks = NULL;
989 }
990
991 /**
992 * @brief This function adds the card. it will probe the
993 * card, allocate the lbs_priv and initialize the device.
994 *
995 * @param card A pointer to card
996 * @return A pointer to struct lbs_private structure
997 */
998 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
999 {
1000 struct net_device *dev = NULL;
1001 struct lbs_private *priv = NULL;
1002
1003 lbs_deb_enter(LBS_DEB_NET);
1004
1005 /* Allocate an Ethernet device and register it */
1006 dev = alloc_etherdev(sizeof(struct lbs_private));
1007 if (!dev) {
1008 lbs_pr_err("init ethX device failed\n");
1009 goto done;
1010 }
1011 priv = dev->priv;
1012
1013 if (lbs_init_adapter(priv)) {
1014 lbs_pr_err("failed to initialize adapter structure.\n");
1015 goto err_init_adapter;
1016 }
1017
1018 priv->dev = dev;
1019 priv->card = card;
1020 priv->mesh_open = 0;
1021 priv->infra_open = 0;
1022
1023 /* Setup the OS Interface to our functions */
1024 dev->open = lbs_dev_open;
1025 dev->hard_start_xmit = lbs_hard_start_xmit;
1026 dev->stop = lbs_eth_stop;
1027 dev->set_mac_address = lbs_set_mac_address;
1028 dev->tx_timeout = lbs_tx_timeout;
1029 dev->get_stats = lbs_get_stats;
1030 dev->watchdog_timeo = 5 * HZ;
1031 dev->ethtool_ops = &lbs_ethtool_ops;
1032 #ifdef WIRELESS_EXT
1033 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1034 #endif
1035 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1036 dev->set_multicast_list = lbs_set_multicast_list;
1037
1038 SET_NETDEV_DEV(dev, dmdev);
1039
1040 priv->rtap_net_dev = NULL;
1041
1042 lbs_deb_thread("Starting main thread...\n");
1043 init_waitqueue_head(&priv->waitq);
1044 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1045 if (IS_ERR(priv->main_thread)) {
1046 lbs_deb_thread("Error creating main thread.\n");
1047 goto err_init_adapter;
1048 }
1049
1050 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1051 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1052 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1053 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1054
1055 sprintf(priv->mesh_ssid, "mesh");
1056 priv->mesh_ssid_len = 4;
1057
1058 goto done;
1059
1060 err_init_adapter:
1061 lbs_free_adapter(priv);
1062 free_netdev(dev);
1063 priv = NULL;
1064
1065 done:
1066 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1067 return priv;
1068 }
1069 EXPORT_SYMBOL_GPL(lbs_add_card);
1070
1071
1072 int lbs_remove_card(struct lbs_private *priv)
1073 {
1074 struct net_device *dev = priv->dev;
1075 union iwreq_data wrqu;
1076
1077 lbs_deb_enter(LBS_DEB_MAIN);
1078
1079 lbs_remove_mesh(priv);
1080 lbs_remove_rtap(priv);
1081
1082 dev = priv->dev;
1083
1084 cancel_delayed_work(&priv->scan_work);
1085 cancel_delayed_work(&priv->assoc_work);
1086 destroy_workqueue(priv->work_thread);
1087
1088 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1089 priv->psmode = LBS802_11POWERMODECAM;
1090 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1091 }
1092
1093 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1094 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1095 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1096
1097 /* Stop the thread servicing the interrupts */
1098 priv->surpriseremoved = 1;
1099 kthread_stop(priv->main_thread);
1100
1101 lbs_free_adapter(priv);
1102
1103 priv->dev = NULL;
1104 free_netdev(dev);
1105
1106 lbs_deb_leave(LBS_DEB_MAIN);
1107 return 0;
1108 }
1109 EXPORT_SYMBOL_GPL(lbs_remove_card);
1110
1111
1112 int lbs_start_card(struct lbs_private *priv)
1113 {
1114 struct net_device *dev = priv->dev;
1115 int ret = -1;
1116
1117 lbs_deb_enter(LBS_DEB_MAIN);
1118
1119 /* poke the firmware */
1120 ret = lbs_setup_firmware(priv);
1121 if (ret)
1122 goto done;
1123
1124 /* init 802.11d */
1125 lbs_init_11d(priv);
1126
1127 if (register_netdev(dev)) {
1128 lbs_pr_err("cannot register ethX device\n");
1129 goto done;
1130 }
1131 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1132 lbs_pr_err("cannot register lbs_rtap attribute\n");
1133 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1134 lbs_pr_err("cannot register lbs_mesh attribute\n");
1135
1136 lbs_debugfs_init_one(priv, dev);
1137
1138 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1139
1140 ret = 0;
1141
1142 done:
1143 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1144 return ret;
1145 }
1146 EXPORT_SYMBOL_GPL(lbs_start_card);
1147
1148
1149 int lbs_stop_card(struct lbs_private *priv)
1150 {
1151 struct net_device *dev = priv->dev;
1152 int ret = -1;
1153 struct cmd_ctrl_node *cmdnode;
1154 unsigned long flags;
1155
1156 lbs_deb_enter(LBS_DEB_MAIN);
1157
1158 netif_stop_queue(priv->dev);
1159 netif_carrier_off(priv->dev);
1160
1161 lbs_debugfs_remove_one(priv);
1162 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1163 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
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 static int lbs_add_mesh(struct lbs_private *priv)
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, priv->dev->dev.parent);
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 static 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 if (!mesh_dev)
1256 goto out;
1257
1258 netif_stop_queue(mesh_dev);
1259 netif_carrier_off(priv->mesh_dev);
1260
1261 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1262 unregister_netdev(mesh_dev);
1263
1264 priv->mesh_dev = NULL;
1265 free_netdev(mesh_dev);
1266
1267 out:
1268 lbs_deb_leave(LBS_DEB_MAIN);
1269 }
1270 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1271
1272 /**
1273 * @brief This function finds the CFP in
1274 * region_cfp_table based on region and band parameter.
1275 *
1276 * @param region The region code
1277 * @param band The band
1278 * @param cfp_no A pointer to CFP number
1279 * @return A pointer to CFP
1280 */
1281 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1282 {
1283 int i, end;
1284
1285 lbs_deb_enter(LBS_DEB_MAIN);
1286
1287 end = ARRAY_SIZE(region_cfp_table);
1288
1289 for (i = 0; i < end ; i++) {
1290 lbs_deb_main("region_cfp_table[i].region=%d\n",
1291 region_cfp_table[i].region);
1292 if (region_cfp_table[i].region == region) {
1293 *cfp_no = region_cfp_table[i].cfp_no_BG;
1294 lbs_deb_leave(LBS_DEB_MAIN);
1295 return region_cfp_table[i].cfp_BG;
1296 }
1297 }
1298
1299 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1300 return NULL;
1301 }
1302
1303 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1304 {
1305 int ret = 0;
1306 int i = 0;
1307
1308 struct chan_freq_power *cfp;
1309 int cfp_no;
1310
1311 lbs_deb_enter(LBS_DEB_MAIN);
1312
1313 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1314
1315 {
1316 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1317 if (cfp != NULL) {
1318 priv->region_channel[i].nrcfp = cfp_no;
1319 priv->region_channel[i].CFP = cfp;
1320 } else {
1321 lbs_deb_main("wrong region code %#x in band B/G\n",
1322 region);
1323 ret = -1;
1324 goto out;
1325 }
1326 priv->region_channel[i].valid = 1;
1327 priv->region_channel[i].region = region;
1328 priv->region_channel[i].band = band;
1329 i++;
1330 }
1331 out:
1332 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1333 return ret;
1334 }
1335
1336 /**
1337 * @brief This function handles the interrupt. it will change PS
1338 * state if applicable. it will wake up main_thread to handle
1339 * the interrupt event as well.
1340 *
1341 * @param dev A pointer to net_device structure
1342 * @return n/a
1343 */
1344 void lbs_interrupt(struct lbs_private *priv)
1345 {
1346 lbs_deb_enter(LBS_DEB_THREAD);
1347
1348 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1349
1350 if (!spin_trylock(&priv->driver_lock)) {
1351 spin_unlock(&priv->driver_lock);
1352 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1353 WARN_ON(1);
1354 }
1355
1356 priv->intcounter++;
1357
1358 if (priv->psstate == PS_STATE_SLEEP)
1359 priv->psstate = PS_STATE_AWAKE;
1360
1361 wake_up_interruptible(&priv->waitq);
1362
1363 lbs_deb_leave(LBS_DEB_THREAD);
1364 }
1365 EXPORT_SYMBOL_GPL(lbs_interrupt);
1366
1367 int lbs_reset_device(struct lbs_private *priv)
1368 {
1369 int ret;
1370
1371 lbs_deb_enter(LBS_DEB_MAIN);
1372 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1373 CMD_ACT_HALT, 0, 0, NULL);
1374 msleep_interruptible(10);
1375
1376 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1377 return ret;
1378 }
1379 EXPORT_SYMBOL_GPL(lbs_reset_device);
1380
1381 static int __init lbs_init_module(void)
1382 {
1383 lbs_deb_enter(LBS_DEB_MAIN);
1384 lbs_debugfs_init();
1385 lbs_deb_leave(LBS_DEB_MAIN);
1386 return 0;
1387 }
1388
1389 static void __exit lbs_exit_module(void)
1390 {
1391 lbs_deb_enter(LBS_DEB_MAIN);
1392
1393 lbs_debugfs_remove();
1394
1395 lbs_deb_leave(LBS_DEB_MAIN);
1396 }
1397
1398 /*
1399 * rtap interface support fuctions
1400 */
1401
1402 static int lbs_rtap_open(struct net_device *dev)
1403 {
1404 /* Yes, _stop_ the queue. Because we don't support injection */
1405 netif_carrier_off(dev);
1406 netif_stop_queue(dev);
1407 return 0;
1408 }
1409
1410 static int lbs_rtap_stop(struct net_device *dev)
1411 {
1412 return 0;
1413 }
1414
1415 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1416 {
1417 netif_stop_queue(dev);
1418 return NETDEV_TX_BUSY;
1419 }
1420
1421 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1422 {
1423 struct lbs_private *priv = dev->priv;
1424 return &priv->stats;
1425 }
1426
1427
1428 static void lbs_remove_rtap(struct lbs_private *priv)
1429 {
1430 if (priv->rtap_net_dev == NULL)
1431 return;
1432 unregister_netdev(priv->rtap_net_dev);
1433 free_netdev(priv->rtap_net_dev);
1434 priv->rtap_net_dev = NULL;
1435 }
1436
1437 static int lbs_add_rtap(struct lbs_private *priv)
1438 {
1439 int rc = 0;
1440 struct net_device *rtap_dev;
1441
1442 if (priv->rtap_net_dev)
1443 return -EPERM;
1444
1445 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1446 if (rtap_dev == NULL)
1447 return -ENOMEM;
1448
1449 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1450 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1451 rtap_dev->open = lbs_rtap_open;
1452 rtap_dev->stop = lbs_rtap_stop;
1453 rtap_dev->get_stats = lbs_rtap_get_stats;
1454 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1455 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1456 rtap_dev->priv = priv;
1457
1458 rc = register_netdev(rtap_dev);
1459 if (rc) {
1460 free_netdev(rtap_dev);
1461 return rc;
1462 }
1463 priv->rtap_net_dev = rtap_dev;
1464
1465 return 0;
1466 }
1467
1468
1469 module_init(lbs_init_module);
1470 module_exit(lbs_exit_module);
1471
1472 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1473 MODULE_AUTHOR("Marvell International Ltd.");
1474 MODULE_LICENSE("GPL");
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