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