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libertas: rename and re-type bufvirtualaddr to cmdbuf
[linux-2.6/mini2440.git] / drivers / net / wireless / libertas / main.c
bloba081b91fb9ba3dfed918a25de6ad4af63efbb4fc
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 cmd_ds_mesh_access mesh_access;
221
222 memset(&mesh_access, 0, sizeof(mesh_access));
223 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
224 CMD_MESH_ACCESS,
225 CMD_ACT_MESH_GET_ANYCAST,
226 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
227
228 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
229 }
230
231 /**
232 * @brief Set function for sysfs attribute anycast_mask
233 */
234 static ssize_t lbs_anycast_set(struct device *dev,
235 struct device_attribute *attr, const char * buf, size_t count)
236 {
237 struct cmd_ds_mesh_access mesh_access;
238 uint32_t datum;
239
240 memset(&mesh_access, 0, sizeof(mesh_access));
241 sscanf(buf, "%x", &datum);
242 mesh_access.data[0] = cpu_to_le32(datum);
243
244 lbs_prepare_and_send_command((to_net_dev(dev))->priv,
245 CMD_MESH_ACCESS,
246 CMD_ACT_MESH_SET_ANYCAST,
247 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
248 return strlen(buf);
249 }
250
251 int lbs_add_rtap(struct lbs_private *priv);
252 void lbs_remove_rtap(struct lbs_private *priv);
253
254 /**
255 * Get function for sysfs attribute rtap
256 */
257 static ssize_t lbs_rtap_get(struct device *dev,
258 struct device_attribute *attr, char * buf)
259 {
260 struct lbs_private *priv = to_net_dev(dev)->priv;
261 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
262 }
263
264 /**
265 * Set function for sysfs attribute rtap
266 */
267 static ssize_t lbs_rtap_set(struct device *dev,
268 struct device_attribute *attr, const char * buf, size_t count)
269 {
270 int monitor_mode;
271 struct lbs_private *priv = to_net_dev(dev)->priv;
272
273 sscanf(buf, "%x", &monitor_mode);
274 if (monitor_mode != LBS_MONITOR_OFF) {
275 if(priv->monitormode == monitor_mode)
276 return strlen(buf);
277 if (priv->monitormode == LBS_MONITOR_OFF) {
278 if (priv->infra_open || priv->mesh_open)
279 return -EBUSY;
280 if (priv->mode == IW_MODE_INFRA)
281 lbs_send_deauthentication(priv);
282 else if (priv->mode == IW_MODE_ADHOC)
283 lbs_stop_adhoc_network(priv);
284 lbs_add_rtap(priv);
285 }
286 priv->monitormode = monitor_mode;
287 }
288
289 else {
290 if (priv->monitormode == LBS_MONITOR_OFF)
291 return strlen(buf);
292 priv->monitormode = LBS_MONITOR_OFF;
293 lbs_remove_rtap(priv);
294
295 if (priv->currenttxskb) {
296 dev_kfree_skb_any(priv->currenttxskb);
297 priv->currenttxskb = NULL;
298 }
299
300 /* Wake queues, command thread, etc. */
301 lbs_host_to_card_done(priv);
302 }
303
304 lbs_prepare_and_send_command(priv,
305 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
306 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
307 return strlen(buf);
308 }
309
310 /**
311 * lbs_rtap attribute to be exported per mshX interface
312 * through sysfs (/sys/class/net/mshX/libertas-rtap)
313 */
314 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get,
315 lbs_rtap_set );
316
317 /**
318 * anycast_mask attribute to be exported per mshX interface
319 * through sysfs (/sys/class/net/mshX/anycast_mask)
320 */
321 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
322
323 static ssize_t lbs_autostart_enabled_get(struct device *dev,
324 struct device_attribute *attr, char * buf)
325 {
326 struct cmd_ds_mesh_access mesh_access;
327
328 memset(&mesh_access, 0, sizeof(mesh_access));
329 lbs_prepare_and_send_command(to_net_dev(dev)->priv,
330 CMD_MESH_ACCESS,
331 CMD_ACT_MESH_GET_AUTOSTART_ENABLED,
332 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
333
334 return sprintf(buf, "%d\n", le32_to_cpu(mesh_access.data[0]));
335 }
336
337 static ssize_t lbs_autostart_enabled_set(struct device *dev,
338 struct device_attribute *attr, const char * buf, size_t count)
339 {
340 struct cmd_ds_mesh_access mesh_access;
341 uint32_t datum;
342 struct lbs_private *priv = (to_net_dev(dev))->priv;
343 int ret;
344
345 memset(&mesh_access, 0, sizeof(mesh_access));
346 sscanf(buf, "%d", &datum);
347 mesh_access.data[0] = cpu_to_le32(datum);
348
349 ret = lbs_prepare_and_send_command(priv,
350 CMD_MESH_ACCESS,
351 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
352 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
353 if (ret == 0)
354 priv->mesh_autostart_enabled = datum ? 1 : 0;
355
356 return strlen(buf);
357 }
358
359 static DEVICE_ATTR(autostart_enabled, 0644,
360 lbs_autostart_enabled_get, lbs_autostart_enabled_set);
361
362 static struct attribute *lbs_mesh_sysfs_entries[] = {
363 &dev_attr_anycast_mask.attr,
364 &dev_attr_autostart_enabled.attr,
365 NULL,
366 };
367
368 static struct attribute_group lbs_mesh_attr_group = {
369 .attrs = lbs_mesh_sysfs_entries,
370 };
371
372 /**
373 * @brief This function opens the ethX or mshX interface
374 *
375 * @param dev A pointer to net_device structure
376 * @return 0 or -EBUSY if monitor mode active
377 */
378 static int lbs_dev_open(struct net_device *dev)
379 {
380 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
381 int ret = 0;
382
383 spin_lock_irq(&priv->driver_lock);
384
385 if (priv->monitormode != LBS_MONITOR_OFF) {
386 ret = -EBUSY;
387 goto out;
388 }
389
390 if (dev == priv->mesh_dev) {
391 priv->mesh_open = 1;
392 priv->mesh_connect_status = LBS_CONNECTED;
393 netif_carrier_on(dev);
394 } else {
395 priv->infra_open = 1;
396
397 if (priv->connect_status == LBS_CONNECTED)
398 netif_carrier_on(dev);
399 else
400 netif_carrier_off(dev);
401 }
402
403 if (!priv->tx_pending_len)
404 netif_wake_queue(dev);
405 out:
406
407 spin_unlock_irq(&priv->driver_lock);
408 return ret;
409 }
410
411 /**
412 * @brief This function closes the mshX interface
413 *
414 * @param dev A pointer to net_device structure
415 * @return 0
416 */
417 static int lbs_mesh_stop(struct net_device *dev)
418 {
419 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
420
421 spin_lock_irq(&priv->driver_lock);
422
423 priv->mesh_open = 0;
424 priv->mesh_connect_status = LBS_DISCONNECTED;
425
426 netif_stop_queue(dev);
427 netif_carrier_off(dev);
428
429 spin_unlock_irq(&priv->driver_lock);
430 return 0;
431 }
432
433 /**
434 * @brief This function closes the ethX interface
435 *
436 * @param dev A pointer to net_device structure
437 * @return 0
438 */
439 static int lbs_eth_stop(struct net_device *dev)
440 {
441 struct lbs_private *priv = (struct lbs_private *) dev->priv;
442
443 spin_lock_irq(&priv->driver_lock);
444
445 priv->infra_open = 0;
446
447 netif_stop_queue(dev);
448
449 spin_unlock_irq(&priv->driver_lock);
450 return 0;
451 }
452
453 static void lbs_tx_timeout(struct net_device *dev)
454 {
455 struct lbs_private *priv = (struct lbs_private *) dev->priv;
456
457 lbs_deb_enter(LBS_DEB_TX);
458
459 lbs_pr_err("tx watch dog timeout\n");
460
461 dev->trans_start = jiffies;
462
463 if (priv->currenttxskb) {
464 priv->eventcause = 0x01000000;
465 lbs_send_tx_feedback(priv);
466 }
467 /* XX: Shouldn't we also call into the hw-specific driver
468 to kick it somehow? */
469 lbs_host_to_card_done(priv);
470
471 lbs_deb_leave(LBS_DEB_TX);
472 }
473
474 void lbs_host_to_card_done(struct lbs_private *priv)
475 {
476 unsigned long flags;
477
478 spin_lock_irqsave(&priv->driver_lock, flags);
479
480 priv->dnld_sent = DNLD_RES_RECEIVED;
481
482 /* Wake main thread if commands are pending */
483 if (!priv->cur_cmd)
484 wake_up_interruptible(&priv->waitq);
485
486 /* Don't wake netif queues if we're in monitor mode and
487 a TX packet is already pending, or if there are commands
488 queued to be sent. */
489 if (!priv->currenttxskb && list_empty(&priv->cmdpendingq)) {
490 if (priv->dev && priv->connect_status == LBS_CONNECTED)
491 netif_wake_queue(priv->dev);
492
493 if (priv->mesh_dev && priv->mesh_connect_status == LBS_CONNECTED)
494 netif_wake_queue(priv->mesh_dev);
495 }
496 spin_unlock_irqrestore(&priv->driver_lock, flags);
497 }
498 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
499
500 /**
501 * @brief This function returns the network statistics
502 *
503 * @param dev A pointer to struct lbs_private structure
504 * @return A pointer to net_device_stats structure
505 */
506 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
507 {
508 struct lbs_private *priv = (struct lbs_private *) dev->priv;
509
510 return &priv->stats;
511 }
512
513 static int lbs_set_mac_address(struct net_device *dev, void *addr)
514 {
515 int ret = 0;
516 struct lbs_private *priv = (struct lbs_private *) dev->priv;
517 struct sockaddr *phwaddr = addr;
518
519 lbs_deb_enter(LBS_DEB_NET);
520
521 /* In case it was called from the mesh device */
522 dev = priv->dev ;
523
524 memset(priv->current_addr, 0, ETH_ALEN);
525
526 /* dev->dev_addr is 8 bytes */
527 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
528
529 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
530 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
531
532 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
533 CMD_ACT_SET,
534 CMD_OPTION_WAITFORRSP, 0, NULL);
535
536 if (ret) {
537 lbs_deb_net("set MAC address failed\n");
538 ret = -1;
539 goto done;
540 }
541
542 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
543 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
544 if (priv->mesh_dev)
545 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
546
547 done:
548 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
549 return ret;
550 }
551
552 static int lbs_copy_multicast_address(struct lbs_private *priv,
553 struct net_device *dev)
554 {
555 int i = 0;
556 struct dev_mc_list *mcptr = dev->mc_list;
557
558 for (i = 0; i < dev->mc_count; i++) {
559 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
560 mcptr = mcptr->next;
561 }
562
563 return i;
564
565 }
566
567 static void lbs_set_multicast_list(struct net_device *dev)
568 {
569 struct lbs_private *priv = dev->priv;
570 int oldpacketfilter;
571 DECLARE_MAC_BUF(mac);
572
573 lbs_deb_enter(LBS_DEB_NET);
574
575 oldpacketfilter = priv->currentpacketfilter;
576
577 if (dev->flags & IFF_PROMISC) {
578 lbs_deb_net("enable promiscuous mode\n");
579 priv->currentpacketfilter |=
580 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
581 priv->currentpacketfilter &=
582 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
583 CMD_ACT_MAC_MULTICAST_ENABLE);
584 } else {
585 /* Multicast */
586 priv->currentpacketfilter &=
587 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
588
589 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
590 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
591 lbs_deb_net( "enabling all multicast\n");
592 priv->currentpacketfilter |=
593 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
594 priv->currentpacketfilter &=
595 ~CMD_ACT_MAC_MULTICAST_ENABLE;
596 } else {
597 priv->currentpacketfilter &=
598 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
599
600 if (!dev->mc_count) {
601 lbs_deb_net("no multicast addresses, "
602 "disabling multicast\n");
603 priv->currentpacketfilter &=
604 ~CMD_ACT_MAC_MULTICAST_ENABLE;
605 } else {
606 int i;
607
608 priv->currentpacketfilter |=
609 CMD_ACT_MAC_MULTICAST_ENABLE;
610
611 priv->nr_of_multicastmacaddr =
612 lbs_copy_multicast_address(priv, dev);
613
614 lbs_deb_net("multicast addresses: %d\n",
615 dev->mc_count);
616
617 for (i = 0; i < dev->mc_count; i++) {
618 lbs_deb_net("Multicast address %d:%s\n",
619 i, print_mac(mac,
620 priv->multicastlist[i]));
621 }
622 /* send multicast addresses to firmware */
623 lbs_prepare_and_send_command(priv,
624 CMD_MAC_MULTICAST_ADR,
625 CMD_ACT_SET, 0, 0,
626 NULL);
627 }
628 }
629 }
630
631 if (priv->currentpacketfilter != oldpacketfilter) {
632 lbs_set_mac_packet_filter(priv);
633 }
634
635 lbs_deb_leave(LBS_DEB_NET);
636 }
637
638 /**
639 * @brief This function handles the major jobs in the LBS driver.
640 * It handles all events generated by firmware, RX data received
641 * from firmware and TX data sent from kernel.
642 *
643 * @param data A pointer to lbs_thread structure
644 * @return 0
645 */
646 static int lbs_thread(void *data)
647 {
648 struct net_device *dev = data;
649 struct lbs_private *priv = dev->priv;
650 wait_queue_t wait;
651 u8 ireg = 0;
652
653 lbs_deb_enter(LBS_DEB_THREAD);
654
655 init_waitqueue_entry(&wait, current);
656
657 set_freezable();
658
659 for (;;) {
660 int shouldsleep;
661
662 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
663 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
664
665 add_wait_queue(&priv->waitq, &wait);
666 set_current_state(TASK_INTERRUPTIBLE);
667 spin_lock_irq(&priv->driver_lock);
668
669 if (priv->surpriseremoved)
670 shouldsleep = 0; /* Bye */
671 else if (priv->psstate == PS_STATE_SLEEP)
672 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
673 else if (priv->intcounter)
674 shouldsleep = 0; /* Interrupt pending. Deal with it now */
675 else if (!priv->fw_ready)
676 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
677 else if (priv->dnld_sent)
678 shouldsleep = 1; /* Something is en route to the device already */
679 else if (priv->tx_pending_len > 0)
680 shouldsleep = 0; /* We've a packet to send */
681 else if (priv->cur_cmd)
682 shouldsleep = 1; /* Can't send a command; one already running */
683 else if (!list_empty(&priv->cmdpendingq))
684 shouldsleep = 0; /* We have a command to send */
685 else
686 shouldsleep = 1; /* No command */
687
688 if (shouldsleep) {
689 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
690 priv->connect_status, priv->intcounter,
691 priv->psmode, priv->psstate);
692 spin_unlock_irq(&priv->driver_lock);
693 schedule();
694 } else
695 spin_unlock_irq(&priv->driver_lock);
696
697 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
698 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
699
700 set_current_state(TASK_RUNNING);
701 remove_wait_queue(&priv->waitq, &wait);
702 try_to_freeze();
703
704 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
705 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
706
707 if (kthread_should_stop() || priv->surpriseremoved) {
708 lbs_deb_thread("main-thread: break from main thread: surpriseremoved=0x%x\n",
709 priv->surpriseremoved);
710 break;
711 }
712
713
714 spin_lock_irq(&priv->driver_lock);
715
716 if (priv->intcounter) {
717 u8 int_status;
718
719 priv->intcounter = 0;
720 int_status = priv->hw_get_int_status(priv, &ireg);
721
722 if (int_status) {
723 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
724 spin_unlock_irq(&priv->driver_lock);
725 continue;
726 }
727 priv->hisregcpy |= ireg;
728 }
729
730 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
731 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
732
733 /* command response? */
734 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
735 lbs_deb_thread("main-thread: cmd response ready\n");
736
737 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
738 spin_unlock_irq(&priv->driver_lock);
739 lbs_process_rx_command(priv);
740 spin_lock_irq(&priv->driver_lock);
741 }
742
743 /* Any Card Event */
744 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
745 lbs_deb_thread("main-thread: Card Event Activity\n");
746
747 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
748
749 if (priv->hw_read_event_cause(priv)) {
750 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
751 spin_unlock_irq(&priv->driver_lock);
752 continue;
753 }
754 spin_unlock_irq(&priv->driver_lock);
755 lbs_process_event(priv);
756 } else
757 spin_unlock_irq(&priv->driver_lock);
758
759 if (!priv->fw_ready)
760 continue;
761
762 /* Check if we need to confirm Sleep Request received previously */
763 if (priv->psstate == PS_STATE_PRE_SLEEP &&
764 !priv->dnld_sent && !priv->cur_cmd) {
765 if (priv->connect_status == LBS_CONNECTED) {
766 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
767 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
768
769 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
770 } else {
771 /* workaround for firmware sending
772 * deauth/linkloss event immediately
773 * after sleep request; remove this
774 * after firmware fixes it
775 */
776 priv->psstate = PS_STATE_AWAKE;
777 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
778 }
779 }
780
781 /* The PS state is changed during processing of Sleep Request
782 * event above
783 */
784 if ((priv->psstate == PS_STATE_SLEEP) ||
785 (priv->psstate == PS_STATE_PRE_SLEEP))
786 continue;
787
788 /* Execute the next command */
789 if (!priv->dnld_sent && !priv->cur_cmd)
790 lbs_execute_next_command(priv);
791
792 /* Wake-up command waiters which can't sleep in
793 * lbs_prepare_and_send_command
794 */
795 if (!list_empty(&priv->cmdpendingq))
796 wake_up_all(&priv->cmd_pending);
797
798 spin_lock_irq(&priv->driver_lock);
799 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
800 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
801 priv->tx_pending_buf,
802 priv->tx_pending_len);
803 if (ret) {
804 lbs_deb_tx("host_to_card failed %d\n", ret);
805 priv->dnld_sent = DNLD_RES_RECEIVED;
806 }
807 priv->tx_pending_len = 0;
808 if (!priv->currenttxskb) {
809 /* We can wake the queues immediately if we aren't
810 waiting for TX feedback */
811 if (priv->connect_status == LBS_CONNECTED)
812 netif_wake_queue(priv->dev);
813 if (priv->mesh_dev &&
814 priv->mesh_connect_status == LBS_CONNECTED)
815 netif_wake_queue(priv->mesh_dev);
816 }
817 }
818 spin_unlock_irq(&priv->driver_lock);
819 }
820
821 del_timer(&priv->command_timer);
822 wake_up_all(&priv->cmd_pending);
823
824 lbs_deb_leave(LBS_DEB_THREAD);
825 return 0;
826 }
827
828 /**
829 * @brief This function downloads firmware image, gets
830 * HW spec from firmware and set basic parameters to
831 * firmware.
832 *
833 * @param priv A pointer to struct lbs_private structure
834 * @return 0 or -1
835 */
836 static int lbs_setup_firmware(struct lbs_private *priv)
837 {
838 int ret = -1;
839 struct cmd_ds_mesh_access mesh_access;
840
841 lbs_deb_enter(LBS_DEB_FW);
842
843 /*
844 * Read MAC address from HW
845 */
846 memset(priv->current_addr, 0xff, ETH_ALEN);
847 ret = lbs_update_hw_spec(priv);
848 if (ret) {
849 ret = -1;
850 goto done;
851 }
852
853 lbs_set_mac_packet_filter(priv);
854
855 /* Get the supported Data rates */
856 ret = lbs_prepare_and_send_command(priv, CMD_802_11_DATA_RATE,
857 CMD_ACT_GET_TX_RATE,
858 CMD_OPTION_WAITFORRSP, 0, NULL);
859
860 if (ret) {
861 ret = -1;
862 goto done;
863 }
864
865 /* Disable mesh autostart */
866 if (priv->mesh_dev) {
867 memset(&mesh_access, 0, sizeof(mesh_access));
868 mesh_access.data[0] = cpu_to_le32(0);
869 ret = lbs_prepare_and_send_command(priv,
870 CMD_MESH_ACCESS,
871 CMD_ACT_MESH_SET_AUTOSTART_ENABLED,
872 CMD_OPTION_WAITFORRSP, 0, (void *)&mesh_access);
873 if (ret) {
874 ret = -1;
875 goto done;
876 }
877 priv->mesh_autostart_enabled = 0;
878 }
879
880 ret = 0;
881 done:
882 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
883 return ret;
884 }
885
886 /**
887 * This function handles the timeout of command sending.
888 * It will re-send the same command again.
889 */
890 static void command_timer_fn(unsigned long data)
891 {
892 struct lbs_private *priv = (struct lbs_private *)data;
893 struct cmd_ctrl_node *node;
894 unsigned long flags;
895
896 node = priv->cur_cmd;
897 if (node == NULL) {
898 lbs_deb_fw("ptempnode empty\n");
899 return;
900 }
901
902 if (!node->cmdbuf) {
903 lbs_deb_fw("cmd is NULL\n");
904 return;
905 }
906
907 lbs_deb_fw("command_timer_fn fired, cmd %x\n", node->cmdbuf->command);
908
909 if (!priv->fw_ready)
910 return;
911
912 spin_lock_irqsave(&priv->driver_lock, flags);
913 priv->cur_cmd = NULL;
914 spin_unlock_irqrestore(&priv->driver_lock, flags);
915
916 lbs_deb_fw("re-sending same command because of timeout\n");
917 lbs_queue_cmd(priv, node, 0);
918
919 wake_up_interruptible(&priv->waitq);
920
921 return;
922 }
923
924 static int lbs_init_adapter(struct lbs_private *priv)
925 {
926 size_t bufsize;
927 int i, ret = 0;
928
929 /* Allocate buffer to store the BSSID list */
930 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
931 priv->networks = kzalloc(bufsize, GFP_KERNEL);
932 if (!priv->networks) {
933 lbs_pr_err("Out of memory allocating beacons\n");
934 ret = -1;
935 goto out;
936 }
937
938 /* Initialize scan result lists */
939 INIT_LIST_HEAD(&priv->network_free_list);
940 INIT_LIST_HEAD(&priv->network_list);
941 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
942 list_add_tail(&priv->networks[i].list,
943 &priv->network_free_list);
944 }
945
946 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
947 priv->lbs_ps_confirm_sleep.command =
948 cpu_to_le16(CMD_802_11_PS_MODE);
949 priv->lbs_ps_confirm_sleep.size =
950 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
951 priv->lbs_ps_confirm_sleep.action =
952 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
953
954 memset(priv->current_addr, 0xff, ETH_ALEN);
955
956 priv->connect_status = LBS_DISCONNECTED;
957 priv->mesh_connect_status = LBS_DISCONNECTED;
958 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
959 priv->mode = IW_MODE_INFRA;
960 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
961 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
962 priv->radioon = RADIO_ON;
963 priv->auto_rate = 1;
964 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
965 priv->psmode = LBS802_11POWERMODECAM;
966 priv->psstate = PS_STATE_FULL_POWER;
967
968 mutex_init(&priv->lock);
969
970 setup_timer(&priv->command_timer, command_timer_fn,
971 (unsigned long)priv);
972
973 INIT_LIST_HEAD(&priv->cmdfreeq);
974 INIT_LIST_HEAD(&priv->cmdpendingq);
975
976 spin_lock_init(&priv->driver_lock);
977 init_waitqueue_head(&priv->cmd_pending);
978
979 /* Allocate the command buffers */
980 if (lbs_allocate_cmd_buffer(priv)) {
981 lbs_pr_err("Out of memory allocating command buffers\n");
982 ret = -1;
983 }
984
985 out:
986 return ret;
987 }
988
989 static void lbs_free_adapter(struct lbs_private *priv)
990 {
991 lbs_deb_fw("free command buffer\n");
992 lbs_free_cmd_buffer(priv);
993
994 lbs_deb_fw("free command_timer\n");
995 del_timer(&priv->command_timer);
996
997 lbs_deb_fw("free scan results table\n");
998 kfree(priv->networks);
999 priv->networks = NULL;
1000 }
1001
1002 /**
1003 * @brief This function adds the card. it will probe the
1004 * card, allocate the lbs_priv and initialize the device.
1005 *
1006 * @param card A pointer to card
1007 * @return A pointer to struct lbs_private structure
1008 */
1009 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1010 {
1011 struct net_device *dev = NULL;
1012 struct lbs_private *priv = NULL;
1013
1014 lbs_deb_enter(LBS_DEB_NET);
1015
1016 /* Allocate an Ethernet device and register it */
1017 dev = alloc_etherdev(sizeof(struct lbs_private));
1018 if (!dev) {
1019 lbs_pr_err("init ethX device failed\n");
1020 goto done;
1021 }
1022 priv = dev->priv;
1023
1024 if (lbs_init_adapter(priv)) {
1025 lbs_pr_err("failed to initialize adapter structure.\n");
1026 goto err_init_adapter;
1027 }
1028
1029 priv->dev = dev;
1030 priv->card = card;
1031 priv->mesh_open = 0;
1032 priv->infra_open = 0;
1033
1034 /* Setup the OS Interface to our functions */
1035 dev->open = lbs_dev_open;
1036 dev->hard_start_xmit = lbs_hard_start_xmit;
1037 dev->stop = lbs_eth_stop;
1038 dev->set_mac_address = lbs_set_mac_address;
1039 dev->tx_timeout = lbs_tx_timeout;
1040 dev->get_stats = lbs_get_stats;
1041 dev->watchdog_timeo = 5 * HZ;
1042 dev->ethtool_ops = &lbs_ethtool_ops;
1043 #ifdef WIRELESS_EXT
1044 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1045 #endif
1046 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1047 dev->set_multicast_list = lbs_set_multicast_list;
1048
1049 SET_NETDEV_DEV(dev, dmdev);
1050
1051 priv->rtap_net_dev = NULL;
1052
1053 lbs_deb_thread("Starting main thread...\n");
1054 init_waitqueue_head(&priv->waitq);
1055 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1056 if (IS_ERR(priv->main_thread)) {
1057 lbs_deb_thread("Error creating main thread.\n");
1058 goto err_init_adapter;
1059 }
1060
1061 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1062 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1063 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1064 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1065
1066 goto done;
1067
1068 err_init_adapter:
1069 lbs_free_adapter(priv);
1070 free_netdev(dev);
1071 priv = NULL;
1072
1073 done:
1074 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1075 return priv;
1076 }
1077 EXPORT_SYMBOL_GPL(lbs_add_card);
1078
1079
1080 int lbs_remove_card(struct lbs_private *priv)
1081 {
1082 struct net_device *dev = priv->dev;
1083 union iwreq_data wrqu;
1084
1085 lbs_deb_enter(LBS_DEB_MAIN);
1086
1087 lbs_remove_rtap(priv);
1088
1089 dev = priv->dev;
1090
1091 cancel_delayed_work(&priv->scan_work);
1092 cancel_delayed_work(&priv->assoc_work);
1093 destroy_workqueue(priv->work_thread);
1094
1095 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1096 priv->psmode = LBS802_11POWERMODECAM;
1097 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1098 }
1099
1100 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1101 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1102 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1103
1104 /* Stop the thread servicing the interrupts */
1105 priv->surpriseremoved = 1;
1106 kthread_stop(priv->main_thread);
1107
1108 lbs_free_adapter(priv);
1109
1110 priv->dev = NULL;
1111 free_netdev(dev);
1112
1113 lbs_deb_leave(LBS_DEB_MAIN);
1114 return 0;
1115 }
1116 EXPORT_SYMBOL_GPL(lbs_remove_card);
1117
1118
1119 int lbs_start_card(struct lbs_private *priv)
1120 {
1121 struct net_device *dev = priv->dev;
1122 int ret = -1;
1123
1124 lbs_deb_enter(LBS_DEB_MAIN);
1125
1126 /* poke the firmware */
1127 ret = lbs_setup_firmware(priv);
1128 if (ret)
1129 goto done;
1130
1131 /* init 802.11d */
1132 lbs_init_11d(priv);
1133
1134 if (register_netdev(dev)) {
1135 lbs_pr_err("cannot register ethX device\n");
1136 goto done;
1137 }
1138 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1139 lbs_pr_err("cannot register lbs_rtap attribute\n");
1140
1141 lbs_debugfs_init_one(priv, dev);
1142
1143 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1144
1145 ret = 0;
1146
1147 done:
1148 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1149 return ret;
1150 }
1151 EXPORT_SYMBOL_GPL(lbs_start_card);
1152
1153
1154 int lbs_stop_card(struct lbs_private *priv)
1155 {
1156 struct net_device *dev = priv->dev;
1157 int ret = -1;
1158 struct cmd_ctrl_node *cmdnode;
1159 unsigned long flags;
1160
1161 lbs_deb_enter(LBS_DEB_MAIN);
1162
1163 netif_stop_queue(priv->dev);
1164 netif_carrier_off(priv->dev);
1165
1166 lbs_debugfs_remove_one(priv);
1167 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1168
1169 /* Flush pending command nodes */
1170 spin_lock_irqsave(&priv->driver_lock, flags);
1171 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1172 cmdnode->cmdwaitqwoken = 1;
1173 wake_up_interruptible(&cmdnode->cmdwait_q);
1174 }
1175 spin_unlock_irqrestore(&priv->driver_lock, flags);
1176
1177 unregister_netdev(dev);
1178
1179 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1180 return ret;
1181 }
1182 EXPORT_SYMBOL_GPL(lbs_stop_card);
1183
1184
1185 /**
1186 * @brief This function adds mshX interface
1187 *
1188 * @param priv A pointer to the struct lbs_private structure
1189 * @return 0 if successful, -X otherwise
1190 */
1191 int lbs_add_mesh(struct lbs_private *priv, struct device *dev)
1192 {
1193 struct net_device *mesh_dev = NULL;
1194 int ret = 0;
1195
1196 lbs_deb_enter(LBS_DEB_MESH);
1197
1198 /* Allocate a virtual mesh device */
1199 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1200 lbs_deb_mesh("init mshX device failed\n");
1201 ret = -ENOMEM;
1202 goto done;
1203 }
1204 mesh_dev->priv = priv;
1205 priv->mesh_dev = mesh_dev;
1206
1207 mesh_dev->open = lbs_dev_open;
1208 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1209 mesh_dev->stop = lbs_mesh_stop;
1210 mesh_dev->get_stats = lbs_get_stats;
1211 mesh_dev->set_mac_address = lbs_set_mac_address;
1212 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1213 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1214 sizeof(priv->dev->dev_addr));
1215
1216 SET_NETDEV_DEV(priv->mesh_dev, dev);
1217
1218 #ifdef WIRELESS_EXT
1219 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1220 #endif
1221 /* Register virtual mesh interface */
1222 ret = register_netdev(mesh_dev);
1223 if (ret) {
1224 lbs_pr_err("cannot register mshX virtual interface\n");
1225 goto err_free;
1226 }
1227
1228 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1229 if (ret)
1230 goto err_unregister;
1231
1232 /* Everything successful */
1233 ret = 0;
1234 goto done;
1235
1236 err_unregister:
1237 unregister_netdev(mesh_dev);
1238
1239 err_free:
1240 free_netdev(mesh_dev);
1241
1242 done:
1243 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1244 return ret;
1245 }
1246 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1247
1248
1249 void lbs_remove_mesh(struct lbs_private *priv)
1250 {
1251 struct net_device *mesh_dev;
1252
1253 lbs_deb_enter(LBS_DEB_MAIN);
1254
1255 if (!priv)
1256 goto out;
1257
1258 mesh_dev = priv->mesh_dev;
1259
1260 netif_stop_queue(mesh_dev);
1261 netif_carrier_off(priv->mesh_dev);
1262
1263 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1264 unregister_netdev(mesh_dev);
1265
1266 priv->mesh_dev = NULL ;
1267 free_netdev(mesh_dev);
1268
1269 out:
1270 lbs_deb_leave(LBS_DEB_MAIN);
1271 }
1272 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1273
1274 /**
1275 * @brief This function finds the CFP in
1276 * region_cfp_table based on region and band parameter.
1277 *
1278 * @param region The region code
1279 * @param band The band
1280 * @param cfp_no A pointer to CFP number
1281 * @return A pointer to CFP
1282 */
1283 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1284 {
1285 int i, end;
1286
1287 lbs_deb_enter(LBS_DEB_MAIN);
1288
1289 end = ARRAY_SIZE(region_cfp_table);
1290
1291 for (i = 0; i < end ; i++) {
1292 lbs_deb_main("region_cfp_table[i].region=%d\n",
1293 region_cfp_table[i].region);
1294 if (region_cfp_table[i].region == region) {
1295 *cfp_no = region_cfp_table[i].cfp_no_BG;
1296 lbs_deb_leave(LBS_DEB_MAIN);
1297 return region_cfp_table[i].cfp_BG;
1298 }
1299 }
1300
1301 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1302 return NULL;
1303 }
1304
1305 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1306 {
1307 int ret = 0;
1308 int i = 0;
1309
1310 struct chan_freq_power *cfp;
1311 int cfp_no;
1312
1313 lbs_deb_enter(LBS_DEB_MAIN);
1314
1315 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1316
1317 {
1318 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1319 if (cfp != NULL) {
1320 priv->region_channel[i].nrcfp = cfp_no;
1321 priv->region_channel[i].CFP = cfp;
1322 } else {
1323 lbs_deb_main("wrong region code %#x in band B/G\n",
1324 region);
1325 ret = -1;
1326 goto out;
1327 }
1328 priv->region_channel[i].valid = 1;
1329 priv->region_channel[i].region = region;
1330 priv->region_channel[i].band = band;
1331 i++;
1332 }
1333 out:
1334 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1335 return ret;
1336 }
1337
1338 /**
1339 * @brief This function handles the interrupt. it will change PS
1340 * state if applicable. it will wake up main_thread to handle
1341 * the interrupt event as well.
1342 *
1343 * @param dev A pointer to net_device structure
1344 * @return n/a
1345 */
1346 void lbs_interrupt(struct lbs_private *priv)
1347 {
1348 lbs_deb_enter(LBS_DEB_THREAD);
1349
1350 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1351
1352 if (spin_trylock(&priv->driver_lock)) {
1353 spin_unlock(&priv->driver_lock);
1354 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1355 WARN_ON(1);
1356 }
1357
1358 priv->intcounter++;
1359
1360 if (priv->psstate == PS_STATE_SLEEP)
1361 priv->psstate = PS_STATE_AWAKE;
1362
1363 wake_up_interruptible(&priv->waitq);
1364
1365 lbs_deb_leave(LBS_DEB_THREAD);
1366 }
1367 EXPORT_SYMBOL_GPL(lbs_interrupt);
1368
1369 int lbs_reset_device(struct lbs_private *priv)
1370 {
1371 int ret;
1372
1373 lbs_deb_enter(LBS_DEB_MAIN);
1374 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1375 CMD_ACT_HALT, 0, 0, NULL);
1376 msleep_interruptible(10);
1377
1378 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1379 return ret;
1380 }
1381 EXPORT_SYMBOL_GPL(lbs_reset_device);
1382
1383 static int __init lbs_init_module(void)
1384 {
1385 lbs_deb_enter(LBS_DEB_MAIN);
1386 lbs_debugfs_init();
1387 lbs_deb_leave(LBS_DEB_MAIN);
1388 return 0;
1389 }
1390
1391 static void __exit lbs_exit_module(void)
1392 {
1393 lbs_deb_enter(LBS_DEB_MAIN);
1394
1395 lbs_debugfs_remove();
1396
1397 lbs_deb_leave(LBS_DEB_MAIN);
1398 }
1399
1400 /*
1401 * rtap interface support fuctions
1402 */
1403
1404 static int lbs_rtap_open(struct net_device *dev)
1405 {
1406 /* Yes, _stop_ the queue. Because we don't support injection */
1407 netif_carrier_off(dev);
1408 netif_stop_queue(dev);
1409 return 0;
1410 }
1411
1412 static int lbs_rtap_stop(struct net_device *dev)
1413 {
1414 return 0;
1415 }
1416
1417 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1418 {
1419 netif_stop_queue(dev);
1420 return NETDEV_TX_BUSY;
1421 }
1422
1423 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1424 {
1425 struct lbs_private *priv = dev->priv;
1426 return &priv->stats;
1427 }
1428
1429
1430 void lbs_remove_rtap(struct lbs_private *priv)
1431 {
1432 if (priv->rtap_net_dev == NULL)
1433 return;
1434 unregister_netdev(priv->rtap_net_dev);
1435 free_netdev(priv->rtap_net_dev);
1436 priv->rtap_net_dev = NULL;
1437 }
1438
1439 int lbs_add_rtap(struct lbs_private *priv)
1440 {
1441 int rc = 0;
1442 struct net_device *rtap_dev;
1443
1444 if (priv->rtap_net_dev)
1445 return -EPERM;
1446
1447 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1448 if (rtap_dev == NULL)
1449 return -ENOMEM;
1450
1451 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1452 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1453 rtap_dev->open = lbs_rtap_open;
1454 rtap_dev->stop = lbs_rtap_stop;
1455 rtap_dev->get_stats = lbs_rtap_get_stats;
1456 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1457 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1458 rtap_dev->priv = priv;
1459
1460 rc = register_netdev(rtap_dev);
1461 if (rc) {
1462 free_netdev(rtap_dev);
1463 return rc;
1464 }
1465 priv->rtap_net_dev = rtap_dev;
1466
1467 return 0;
1468 }
1469
1470
1471 module_init(lbs_init_module);
1472 module_exit(lbs_exit_module);
1473
1474 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1475 MODULE_AUTHOR("Marvell International Ltd.");
1476 MODULE_LICENSE("GPL");
Support for the Chinese Samsung S3C2440 based development boards