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Subject: [PATCH] Upgrades x86 to kernel 2.6.27 (#4195)
[openwrt.git] / package / libertas / src / main.c
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/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 /* More often than not, this actually happens because the
480 firmware has crapped itself -- rather than just a very
481 busy medium. So send a harmless command, and if/when
482 _that_ times out, we'll kick it in the head. */
483 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
484 0, 0, NULL);
485
486 lbs_deb_leave(LBS_DEB_TX);
487 }
488
489 void lbs_host_to_card_done(struct lbs_private *priv)
490 {
491 unsigned long flags;
492
493 spin_lock_irqsave(&priv->driver_lock, flags);
494
495 priv->dnld_sent = DNLD_RES_RECEIVED;
496
497 /* Wake main thread if commands are pending */
498 if (!priv->cur_cmd || priv->tx_pending_len > 0)
499 wake_up_interruptible(&priv->waitq);
500
501 spin_unlock_irqrestore(&priv->driver_lock, flags);
502 }
503 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
504
505 /**
506 * @brief This function returns the network statistics
507 *
508 * @param dev A pointer to struct lbs_private structure
509 * @return A pointer to net_device_stats structure
510 */
511 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
512 {
513 struct lbs_private *priv = (struct lbs_private *) dev->priv;
514
515 return &priv->stats;
516 }
517
518 static int lbs_set_mac_address(struct net_device *dev, void *addr)
519 {
520 int ret = 0;
521 struct lbs_private *priv = (struct lbs_private *) dev->priv;
522 struct sockaddr *phwaddr = addr;
523
524 lbs_deb_enter(LBS_DEB_NET);
525
526 /* In case it was called from the mesh device */
527 dev = priv->dev ;
528
529 memset(priv->current_addr, 0, ETH_ALEN);
530
531 /* dev->dev_addr is 8 bytes */
532 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
533
534 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
535 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
536
537 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
538 CMD_ACT_SET,
539 CMD_OPTION_WAITFORRSP, 0, NULL);
540
541 if (ret) {
542 lbs_deb_net("set MAC address failed\n");
543 ret = -1;
544 goto done;
545 }
546
547 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
548 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
549 if (priv->mesh_dev)
550 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
551
552 done:
553 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
554 return ret;
555 }
556
557 static int lbs_copy_multicast_address(struct lbs_private *priv,
558 struct net_device *dev)
559 {
560 int i = 0;
561 struct dev_mc_list *mcptr = dev->mc_list;
562
563 for (i = 0; i < dev->mc_count; i++) {
564 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
565 mcptr = mcptr->next;
566 }
567
568 return i;
569
570 }
571
572 static void lbs_set_multicast_list(struct net_device *dev)
573 {
574 struct lbs_private *priv = dev->priv;
575 int oldpacketfilter;
576 DECLARE_MAC_BUF(mac);
577
578 lbs_deb_enter(LBS_DEB_NET);
579
580 oldpacketfilter = priv->currentpacketfilter;
581
582 if (dev->flags & IFF_PROMISC) {
583 lbs_deb_net("enable promiscuous mode\n");
584 priv->currentpacketfilter |=
585 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
586 priv->currentpacketfilter &=
587 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
588 CMD_ACT_MAC_MULTICAST_ENABLE);
589 } else {
590 /* Multicast */
591 priv->currentpacketfilter &=
592 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
593
594 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
595 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
596 lbs_deb_net( "enabling all multicast\n");
597 priv->currentpacketfilter |=
598 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
599 priv->currentpacketfilter &=
600 ~CMD_ACT_MAC_MULTICAST_ENABLE;
601 } else {
602 priv->currentpacketfilter &=
603 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
604
605 if (!dev->mc_count) {
606 lbs_deb_net("no multicast addresses, "
607 "disabling multicast\n");
608 priv->currentpacketfilter &=
609 ~CMD_ACT_MAC_MULTICAST_ENABLE;
610 } else {
611 int i;
612
613 priv->currentpacketfilter |=
614 CMD_ACT_MAC_MULTICAST_ENABLE;
615
616 priv->nr_of_multicastmacaddr =
617 lbs_copy_multicast_address(priv, dev);
618
619 lbs_deb_net("multicast addresses: %d\n",
620 dev->mc_count);
621
622 for (i = 0; i < dev->mc_count; i++) {
623 lbs_deb_net("Multicast address %d:%s\n",
624 i, print_mac(mac,
625 priv->multicastlist[i]));
626 }
627 /* send multicast addresses to firmware */
628 lbs_prepare_and_send_command(priv,
629 CMD_MAC_MULTICAST_ADR,
630 CMD_ACT_SET, 0, 0,
631 NULL);
632 }
633 }
634 }
635
636 if (priv->currentpacketfilter != oldpacketfilter) {
637 lbs_set_mac_packet_filter(priv);
638 }
639
640 lbs_deb_leave(LBS_DEB_NET);
641 }
642
643 /**
644 * @brief This function handles the major jobs in the LBS driver.
645 * It handles all events generated by firmware, RX data received
646 * from firmware and TX data sent from kernel.
647 *
648 * @param data A pointer to lbs_thread structure
649 * @return 0
650 */
651 static int lbs_thread(void *data)
652 {
653 struct net_device *dev = data;
654 struct lbs_private *priv = dev->priv;
655 wait_queue_t wait;
656 u8 ireg = 0;
657
658 lbs_deb_enter(LBS_DEB_THREAD);
659
660 init_waitqueue_entry(&wait, current);
661
662 for (;;) {
663 int shouldsleep;
664
665 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
666 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
667
668 add_wait_queue(&priv->waitq, &wait);
669 set_current_state(TASK_INTERRUPTIBLE);
670 spin_lock_irq(&priv->driver_lock);
671
672 if (kthread_should_stop())
673 shouldsleep = 0; /* Bye */
674 else if (priv->surpriseremoved)
675 shouldsleep = 1; /* We need to wait until we're _told_ to die */
676 else if (priv->psstate == PS_STATE_SLEEP)
677 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
678 else if (priv->intcounter)
679 shouldsleep = 0; /* Interrupt pending. Deal with it now */
680 else if (priv->cmd_timed_out)
681 shouldsleep = 0; /* Command timed out. Recover */
682 else if (!priv->fw_ready)
683 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
684 else if (priv->dnld_sent)
685 shouldsleep = 1; /* Something is en route to the device already */
686 else if (priv->tx_pending_len > 0)
687 shouldsleep = 0; /* We've a packet to send */
688 else if (priv->cur_cmd)
689 shouldsleep = 1; /* Can't send a command; one already running */
690 else if (!list_empty(&priv->cmdpendingq))
691 shouldsleep = 0; /* We have a command to send */
692 else
693 shouldsleep = 1; /* No command */
694
695 if (shouldsleep) {
696 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
697 priv->connect_status, priv->intcounter,
698 priv->psmode, priv->psstate);
699 spin_unlock_irq(&priv->driver_lock);
700 schedule();
701 } else
702 spin_unlock_irq(&priv->driver_lock);
703
704 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
705 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
706
707 set_current_state(TASK_RUNNING);
708 remove_wait_queue(&priv->waitq, &wait);
709
710 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
711 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
712
713 if (kthread_should_stop()) {
714 lbs_deb_thread("main-thread: break from main thread\n");
715 break;
716 }
717
718 if (priv->surpriseremoved) {
719 lbs_deb_thread("adapter removed; waiting to die...\n");
720 continue;
721 }
722
723 spin_lock_irq(&priv->driver_lock);
724
725 if (priv->intcounter) {
726 u8 int_status;
727
728 priv->intcounter = 0;
729 int_status = priv->hw_get_int_status(priv, &ireg);
730
731 if (int_status) {
732 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
733 spin_unlock_irq(&priv->driver_lock);
734 continue;
735 }
736 priv->hisregcpy |= ireg;
737 }
738
739 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
740 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
741
742 /* command response? */
743 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
744 lbs_deb_thread("main-thread: cmd response ready\n");
745
746 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
747 spin_unlock_irq(&priv->driver_lock);
748 lbs_process_rx_command(priv);
749 spin_lock_irq(&priv->driver_lock);
750 }
751
752 if (priv->cmd_timed_out && priv->cur_cmd) {
753 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
754
755 if (++priv->nr_retries > 10) {
756 lbs_pr_info("Excessive timeouts submitting command %x\n",
757 le16_to_cpu(cmdnode->cmdbuf->command));
758 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
759 priv->nr_retries = 0;
760 } else {
761 priv->cur_cmd = NULL;
762 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
763 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
764
765 /* Stick it back at the _top_ of the pending queue
766 for immediate resubmission */
767 list_add(&cmdnode->list, &priv->cmdpendingq);
768 }
769 }
770 priv->cmd_timed_out = 0;
771
772 /* Any Card Event */
773 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
774 lbs_deb_thread("main-thread: Card Event Activity\n");
775
776 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
777
778 if (priv->hw_read_event_cause(priv)) {
779 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
780 spin_unlock_irq(&priv->driver_lock);
781 continue;
782 }
783 spin_unlock_irq(&priv->driver_lock);
784 lbs_process_event(priv);
785 } else
786 spin_unlock_irq(&priv->driver_lock);
787
788 if (!priv->fw_ready)
789 continue;
790
791 /* Check if we need to confirm Sleep Request received previously */
792 if (priv->psstate == PS_STATE_PRE_SLEEP &&
793 !priv->dnld_sent && !priv->cur_cmd) {
794 if (priv->connect_status == LBS_CONNECTED) {
795 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
796 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
797
798 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
799 } else {
800 /* workaround for firmware sending
801 * deauth/linkloss event immediately
802 * after sleep request; remove this
803 * after firmware fixes it
804 */
805 priv->psstate = PS_STATE_AWAKE;
806 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
807 }
808 }
809
810 /* The PS state is changed during processing of Sleep Request
811 * event above
812 */
813 if ((priv->psstate == PS_STATE_SLEEP) ||
814 (priv->psstate == PS_STATE_PRE_SLEEP))
815 continue;
816
817 /* Execute the next command */
818 if (!priv->dnld_sent && !priv->cur_cmd)
819 lbs_execute_next_command(priv);
820
821 /* Wake-up command waiters which can't sleep in
822 * lbs_prepare_and_send_command
823 */
824 if (!list_empty(&priv->cmdpendingq))
825 wake_up_all(&priv->cmd_pending);
826
827 spin_lock_irq(&priv->driver_lock);
828 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
829 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
830 priv->tx_pending_buf,
831 priv->tx_pending_len);
832 if (ret) {
833 lbs_deb_tx("host_to_card failed %d\n", ret);
834 priv->dnld_sent = DNLD_RES_RECEIVED;
835 }
836 priv->tx_pending_len = 0;
837 if (!priv->currenttxskb) {
838 /* We can wake the queues immediately if we aren't
839 waiting for TX feedback */
840 if (priv->connect_status == LBS_CONNECTED)
841 netif_wake_queue(priv->dev);
842 if (priv->mesh_dev &&
843 priv->mesh_connect_status == LBS_CONNECTED)
844 netif_wake_queue(priv->mesh_dev);
845 }
846 }
847 spin_unlock_irq(&priv->driver_lock);
848 }
849
850 del_timer(&priv->command_timer);
851 wake_up_all(&priv->cmd_pending);
852
853 lbs_deb_leave(LBS_DEB_THREAD);
854 return 0;
855 }
856
857 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
858 struct cmd_header *cmd)
859 {
860 lbs_deb_fw("HOST_SLEEP_ACTIVATE succeeded\n");
861
862 netif_device_detach(priv->dev);
863 if (priv->mesh_dev)
864 netif_device_detach(priv->mesh_dev);
865
866 priv->fw_ready = 0;
867 return 0;
868 }
869
870
871 int lbs_suspend(struct lbs_private *priv)
872 {
873 struct cmd_header cmd;
874 int ret;
875
876 if (priv->wol_criteria == 0xffffffff) {
877 lbs_pr_info("Suspend attempt without configuring wake params!\n");
878 return -EINVAL;
879 }
880
881 memset(&cmd, 0, sizeof(cmd));
882
883 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
884 sizeof(cmd), lbs_suspend_callback, 0);
885 if (ret)
886 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
887
888 return ret;
889 }
890 EXPORT_SYMBOL_GPL(lbs_suspend);
891
892 int lbs_resume(struct lbs_private *priv)
893 {
894 priv->fw_ready = 1;
895
896 /* Firmware doesn't seem to give us RX packets any more
897 until we send it some command. Might as well update */
898 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
899 0, 0, NULL);
900
901 netif_device_attach(priv->dev);
902 if (priv->mesh_dev)
903 netif_device_attach(priv->mesh_dev);
904
905 return 0;
906 }
907 EXPORT_SYMBOL_GPL(lbs_resume);
908
909 /**
910 * @brief This function downloads firmware image, gets
911 * HW spec from firmware and set basic parameters to
912 * firmware.
913 *
914 * @param priv A pointer to struct lbs_private structure
915 * @return 0 or -1
916 */
917 static int lbs_setup_firmware(struct lbs_private *priv)
918 {
919 int ret = -1;
920
921 lbs_deb_enter(LBS_DEB_FW);
922
923 /*
924 * Read MAC address from HW
925 */
926 memset(priv->current_addr, 0xff, ETH_ALEN);
927 ret = lbs_update_hw_spec(priv);
928 if (ret) {
929 ret = -1;
930 goto done;
931 }
932
933 lbs_set_mac_packet_filter(priv);
934
935 ret = lbs_get_data_rate(priv);
936 if (ret < 0) {
937 ret = -1;
938 goto done;
939 }
940
941 ret = 0;
942 done:
943 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
944 return ret;
945 }
946
947 /**
948 * This function handles the timeout of command sending.
949 * It will re-send the same command again.
950 */
951 static void command_timer_fn(unsigned long data)
952 {
953 struct lbs_private *priv = (struct lbs_private *)data;
954 unsigned long flags;
955
956 spin_lock_irqsave(&priv->driver_lock, flags);
957
958 if (!priv->cur_cmd) {
959 lbs_pr_info("Command timer expired; no pending command\n");
960 goto out;
961 }
962
963 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
964
965 priv->cmd_timed_out = 1;
966 wake_up_interruptible(&priv->waitq);
967 out:
968 spin_unlock_irqrestore(&priv->driver_lock, flags);
969 }
970
971 static int lbs_init_adapter(struct lbs_private *priv)
972 {
973 size_t bufsize;
974 int i, ret = 0;
975
976 /* Allocate buffer to store the BSSID list */
977 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
978 priv->networks = kzalloc(bufsize, GFP_KERNEL);
979 if (!priv->networks) {
980 lbs_pr_err("Out of memory allocating beacons\n");
981 ret = -1;
982 goto out;
983 }
984
985 /* Initialize scan result lists */
986 INIT_LIST_HEAD(&priv->network_free_list);
987 INIT_LIST_HEAD(&priv->network_list);
988 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
989 list_add_tail(&priv->networks[i].list,
990 &priv->network_free_list);
991 }
992
993 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
994 priv->lbs_ps_confirm_sleep.command =
995 cpu_to_le16(CMD_802_11_PS_MODE);
996 priv->lbs_ps_confirm_sleep.size =
997 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
998 priv->lbs_ps_confirm_sleep.action =
999 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1000
1001 memset(priv->current_addr, 0xff, ETH_ALEN);
1002
1003 priv->connect_status = LBS_DISCONNECTED;
1004 priv->mesh_connect_status = LBS_DISCONNECTED;
1005 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1006 priv->mode = IW_MODE_INFRA;
1007 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1008 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1009 priv->radioon = RADIO_ON;
1010 priv->auto_rate = 1;
1011 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1012 priv->psmode = LBS802_11POWERMODECAM;
1013 priv->psstate = PS_STATE_FULL_POWER;
1014
1015 mutex_init(&priv->lock);
1016
1017 setup_timer(&priv->command_timer, command_timer_fn,
1018 (unsigned long)priv);
1019
1020 INIT_LIST_HEAD(&priv->cmdfreeq);
1021 INIT_LIST_HEAD(&priv->cmdpendingq);
1022
1023 spin_lock_init(&priv->driver_lock);
1024 init_waitqueue_head(&priv->cmd_pending);
1025
1026 /* Allocate the command buffers */
1027 if (lbs_allocate_cmd_buffer(priv)) {
1028 lbs_pr_err("Out of memory allocating command buffers\n");
1029 ret = -1;
1030 }
1031
1032 out:
1033 return ret;
1034 }
1035
1036 static void lbs_free_adapter(struct lbs_private *priv)
1037 {
1038 lbs_deb_fw("free command buffer\n");
1039 lbs_free_cmd_buffer(priv);
1040
1041 lbs_deb_fw("free command_timer\n");
1042 del_timer(&priv->command_timer);
1043
1044 lbs_deb_fw("free scan results table\n");
1045 kfree(priv->networks);
1046 priv->networks = NULL;
1047 }
1048
1049 /**
1050 * @brief This function adds the card. it will probe the
1051 * card, allocate the lbs_priv and initialize the device.
1052 *
1053 * @param card A pointer to card
1054 * @return A pointer to struct lbs_private structure
1055 */
1056 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1057 {
1058 struct net_device *dev = NULL;
1059 struct lbs_private *priv = NULL;
1060
1061 lbs_deb_enter(LBS_DEB_NET);
1062
1063 /* Allocate an Ethernet device and register it */
1064 dev = alloc_etherdev(sizeof(struct lbs_private));
1065 if (!dev) {
1066 lbs_pr_err("init ethX device failed\n");
1067 goto done;
1068 }
1069 priv = dev->priv;
1070
1071 if (lbs_init_adapter(priv)) {
1072 lbs_pr_err("failed to initialize adapter structure.\n");
1073 goto err_init_adapter;
1074 }
1075
1076 priv->dev = dev;
1077 priv->card = card;
1078 priv->mesh_open = 0;
1079 priv->infra_open = 0;
1080
1081 /* Setup the OS Interface to our functions */
1082 dev->open = lbs_dev_open;
1083 dev->hard_start_xmit = lbs_hard_start_xmit;
1084 dev->stop = lbs_eth_stop;
1085 dev->set_mac_address = lbs_set_mac_address;
1086 dev->tx_timeout = lbs_tx_timeout;
1087 dev->get_stats = lbs_get_stats;
1088 dev->watchdog_timeo = 5 * HZ;
1089 dev->ethtool_ops = &lbs_ethtool_ops;
1090 #ifdef WIRELESS_EXT
1091 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1092 #endif
1093 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1094 dev->set_multicast_list = lbs_set_multicast_list;
1095
1096 SET_NETDEV_DEV(dev, dmdev);
1097
1098 priv->rtap_net_dev = NULL;
1099
1100 lbs_deb_thread("Starting main thread...\n");
1101 init_waitqueue_head(&priv->waitq);
1102 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1103 if (IS_ERR(priv->main_thread)) {
1104 lbs_deb_thread("Error creating main thread.\n");
1105 goto err_init_adapter;
1106 }
1107
1108 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1109 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1110 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1111 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1112
1113 sprintf(priv->mesh_ssid, "mesh");
1114 priv->mesh_ssid_len = 4;
1115
1116 priv->wol_criteria = 0xffffffff;
1117 priv->wol_gpio = 0xff;
1118
1119 goto done;
1120
1121 err_init_adapter:
1122 lbs_free_adapter(priv);
1123 free_netdev(dev);
1124 priv = NULL;
1125
1126 done:
1127 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1128 return priv;
1129 }
1130 EXPORT_SYMBOL_GPL(lbs_add_card);
1131
1132
1133 int lbs_remove_card(struct lbs_private *priv)
1134 {
1135 struct net_device *dev = priv->dev;
1136 union iwreq_data wrqu;
1137
1138 lbs_deb_enter(LBS_DEB_MAIN);
1139
1140 lbs_remove_mesh(priv);
1141 lbs_remove_rtap(priv);
1142
1143 dev = priv->dev;
1144
1145 cancel_delayed_work(&priv->scan_work);
1146 cancel_delayed_work(&priv->assoc_work);
1147 destroy_workqueue(priv->work_thread);
1148
1149 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1150 priv->psmode = LBS802_11POWERMODECAM;
1151 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1152 }
1153
1154 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1155 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1156 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1157
1158 /* Stop the thread servicing the interrupts */
1159 priv->surpriseremoved = 1;
1160 kthread_stop(priv->main_thread);
1161
1162 lbs_free_adapter(priv);
1163
1164 priv->dev = NULL;
1165 free_netdev(dev);
1166
1167 lbs_deb_leave(LBS_DEB_MAIN);
1168 return 0;
1169 }
1170 EXPORT_SYMBOL_GPL(lbs_remove_card);
1171
1172
1173 int lbs_start_card(struct lbs_private *priv)
1174 {
1175 struct net_device *dev = priv->dev;
1176 int ret = -1;
1177
1178 lbs_deb_enter(LBS_DEB_MAIN);
1179
1180 /* poke the firmware */
1181 ret = lbs_setup_firmware(priv);
1182 if (ret)
1183 goto done;
1184
1185 /* init 802.11d */
1186 lbs_init_11d(priv);
1187
1188 if (register_netdev(dev)) {
1189 lbs_pr_err("cannot register ethX device\n");
1190 goto done;
1191 }
1192 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1193 lbs_pr_err("cannot register lbs_rtap attribute\n");
1194
1195 /* Enable mesh, if supported, and work out which TLV it uses.
1196 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1197 0x100 + 37 is the official value used in 5.110.21.pXX
1198 but we check them in that order because 20.pXX doesn't
1199 give an error -- it just silently fails. */
1200
1201 /* 5.110.20.pXX firmware will fail the command if the channel
1202 doesn't match the existing channel. But only if the TLV
1203 is correct. If the channel is wrong, _BOTH_ versions will
1204 give an error to 0x100+291, and allow 0x100+37 to succeed.
1205 It's just that 5.110.20.pXX will not have done anything
1206 useful */
1207
1208 lbs_update_channel(priv);
1209 priv->mesh_tlv = 0x100 + 291;
1210 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1211 priv->mesh_tlv = 0x100 + 37;
1212 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1213 priv->mesh_tlv = 0;
1214 }
1215 if (priv->mesh_tlv) {
1216 lbs_add_mesh(priv);
1217
1218 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1219 lbs_pr_err("cannot register lbs_mesh attribute\n");
1220 }
1221
1222 lbs_debugfs_init_one(priv, dev);
1223
1224 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1225
1226 ret = 0;
1227
1228 done:
1229 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1230 return ret;
1231 }
1232 EXPORT_SYMBOL_GPL(lbs_start_card);
1233
1234
1235 int lbs_stop_card(struct lbs_private *priv)
1236 {
1237 struct net_device *dev = priv->dev;
1238 int ret = -1;
1239 struct cmd_ctrl_node *cmdnode;
1240 unsigned long flags;
1241
1242 lbs_deb_enter(LBS_DEB_MAIN);
1243
1244 netif_stop_queue(priv->dev);
1245 netif_carrier_off(priv->dev);
1246
1247 lbs_debugfs_remove_one(priv);
1248 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1249 if (priv->mesh_tlv)
1250 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1251
1252 /* Flush pending command nodes */
1253 spin_lock_irqsave(&priv->driver_lock, flags);
1254 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1255 cmdnode->result = -ENOENT;
1256 cmdnode->cmdwaitqwoken = 1;
1257 wake_up_interruptible(&cmdnode->cmdwait_q);
1258 }
1259 spin_unlock_irqrestore(&priv->driver_lock, flags);
1260
1261 unregister_netdev(dev);
1262
1263 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1264 return ret;
1265 }
1266 EXPORT_SYMBOL_GPL(lbs_stop_card);
1267
1268
1269 /**
1270 * @brief This function adds mshX interface
1271 *
1272 * @param priv A pointer to the struct lbs_private structure
1273 * @return 0 if successful, -X otherwise
1274 */
1275 static int lbs_add_mesh(struct lbs_private *priv)
1276 {
1277 struct net_device *mesh_dev = NULL;
1278 int ret = 0;
1279
1280 lbs_deb_enter(LBS_DEB_MESH);
1281
1282 /* Allocate a virtual mesh device */
1283 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1284 lbs_deb_mesh("init mshX device failed\n");
1285 ret = -ENOMEM;
1286 goto done;
1287 }
1288 mesh_dev->priv = priv;
1289 priv->mesh_dev = mesh_dev;
1290
1291 mesh_dev->open = lbs_dev_open;
1292 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1293 mesh_dev->stop = lbs_mesh_stop;
1294 mesh_dev->get_stats = lbs_get_stats;
1295 mesh_dev->set_mac_address = lbs_set_mac_address;
1296 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1297 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1298 sizeof(priv->dev->dev_addr));
1299
1300 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1301
1302 #ifdef WIRELESS_EXT
1303 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1304 #endif
1305 /* Register virtual mesh interface */
1306 ret = register_netdev(mesh_dev);
1307 if (ret) {
1308 lbs_pr_err("cannot register mshX virtual interface\n");
1309 goto err_free;
1310 }
1311
1312 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1313 if (ret)
1314 goto err_unregister;
1315
1316 /* Everything successful */
1317 ret = 0;
1318 goto done;
1319
1320 err_unregister:
1321 unregister_netdev(mesh_dev);
1322
1323 err_free:
1324 free_netdev(mesh_dev);
1325
1326 done:
1327 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1328 return ret;
1329 }
1330 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1331
1332
1333 static void lbs_remove_mesh(struct lbs_private *priv)
1334 {
1335 struct net_device *mesh_dev;
1336
1337 lbs_deb_enter(LBS_DEB_MAIN);
1338
1339 if (!priv)
1340 goto out;
1341
1342 mesh_dev = priv->mesh_dev;
1343 if (!mesh_dev)
1344 goto out;
1345
1346 netif_stop_queue(mesh_dev);
1347 netif_carrier_off(priv->mesh_dev);
1348
1349 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1350 unregister_netdev(mesh_dev);
1351
1352 priv->mesh_dev = NULL;
1353 free_netdev(mesh_dev);
1354
1355 out:
1356 lbs_deb_leave(LBS_DEB_MAIN);
1357 }
1358 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1359
1360 /**
1361 * @brief This function finds the CFP in
1362 * region_cfp_table based on region and band parameter.
1363 *
1364 * @param region The region code
1365 * @param band The band
1366 * @param cfp_no A pointer to CFP number
1367 * @return A pointer to CFP
1368 */
1369 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1370 {
1371 int i, end;
1372
1373 lbs_deb_enter(LBS_DEB_MAIN);
1374
1375 end = ARRAY_SIZE(region_cfp_table);
1376
1377 for (i = 0; i < end ; i++) {
1378 lbs_deb_main("region_cfp_table[i].region=%d\n",
1379 region_cfp_table[i].region);
1380 if (region_cfp_table[i].region == region) {
1381 *cfp_no = region_cfp_table[i].cfp_no_BG;
1382 lbs_deb_leave(LBS_DEB_MAIN);
1383 return region_cfp_table[i].cfp_BG;
1384 }
1385 }
1386
1387 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1388 return NULL;
1389 }
1390
1391 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1392 {
1393 int ret = 0;
1394 int i = 0;
1395
1396 struct chan_freq_power *cfp;
1397 int cfp_no;
1398
1399 lbs_deb_enter(LBS_DEB_MAIN);
1400
1401 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1402
1403 {
1404 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1405 if (cfp != NULL) {
1406 priv->region_channel[i].nrcfp = cfp_no;
1407 priv->region_channel[i].CFP = cfp;
1408 } else {
1409 lbs_deb_main("wrong region code %#x in band B/G\n",
1410 region);
1411 ret = -1;
1412 goto out;
1413 }
1414 priv->region_channel[i].valid = 1;
1415 priv->region_channel[i].region = region;
1416 priv->region_channel[i].band = band;
1417 i++;
1418 }
1419 out:
1420 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1421 return ret;
1422 }
1423
1424 /**
1425 * @brief This function handles the interrupt. it will change PS
1426 * state if applicable. it will wake up main_thread to handle
1427 * the interrupt event as well.
1428 *
1429 * @param dev A pointer to net_device structure
1430 * @return n/a
1431 */
1432 void lbs_interrupt(struct lbs_private *priv)
1433 {
1434 lbs_deb_enter(LBS_DEB_THREAD);
1435
1436 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1437
1438 priv->intcounter++;
1439
1440 if (priv->psstate == PS_STATE_SLEEP)
1441 priv->psstate = PS_STATE_AWAKE;
1442
1443 wake_up_interruptible(&priv->waitq);
1444
1445 lbs_deb_leave(LBS_DEB_THREAD);
1446 }
1447 EXPORT_SYMBOL_GPL(lbs_interrupt);
1448
1449 int lbs_reset_device(struct lbs_private *priv)
1450 {
1451 int ret;
1452
1453 lbs_deb_enter(LBS_DEB_MAIN);
1454 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1455 CMD_ACT_HALT, 0, 0, NULL);
1456 msleep_interruptible(10);
1457
1458 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1459 return ret;
1460 }
1461 EXPORT_SYMBOL_GPL(lbs_reset_device);
1462
1463 static int __init lbs_init_module(void)
1464 {
1465 lbs_deb_enter(LBS_DEB_MAIN);
1466 lbs_debugfs_init();
1467 lbs_deb_leave(LBS_DEB_MAIN);
1468 return 0;
1469 }
1470
1471 static void __exit lbs_exit_module(void)
1472 {
1473 lbs_deb_enter(LBS_DEB_MAIN);
1474
1475 lbs_debugfs_remove();
1476
1477 lbs_deb_leave(LBS_DEB_MAIN);
1478 }
1479
1480 /*
1481 * rtap interface support fuctions
1482 */
1483
1484 static int lbs_rtap_open(struct net_device *dev)
1485 {
1486 /* Yes, _stop_ the queue. Because we don't support injection */
1487 netif_carrier_off(dev);
1488 netif_stop_queue(dev);
1489 return 0;
1490 }
1491
1492 static int lbs_rtap_stop(struct net_device *dev)
1493 {
1494 return 0;
1495 }
1496
1497 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1498 {
1499 netif_stop_queue(dev);
1500 return NETDEV_TX_BUSY;
1501 }
1502
1503 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1504 {
1505 struct lbs_private *priv = dev->priv;
1506 return &priv->stats;
1507 }
1508
1509
1510 static void lbs_remove_rtap(struct lbs_private *priv)
1511 {
1512 if (priv->rtap_net_dev == NULL)
1513 return;
1514 unregister_netdev(priv->rtap_net_dev);
1515 free_netdev(priv->rtap_net_dev);
1516 priv->rtap_net_dev = NULL;
1517 }
1518
1519 static int lbs_add_rtap(struct lbs_private *priv)
1520 {
1521 int rc = 0;
1522 struct net_device *rtap_dev;
1523
1524 if (priv->rtap_net_dev)
1525 return -EPERM;
1526
1527 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1528 if (rtap_dev == NULL)
1529 return -ENOMEM;
1530
1531 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1532 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1533 rtap_dev->open = lbs_rtap_open;
1534 rtap_dev->stop = lbs_rtap_stop;
1535 rtap_dev->get_stats = lbs_rtap_get_stats;
1536 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1537 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1538 rtap_dev->priv = priv;
1539
1540 rc = register_netdev(rtap_dev);
1541 if (rc) {
1542 free_netdev(rtap_dev);
1543 return rc;
1544 }
1545 priv->rtap_net_dev = rtap_dev;
1546
1547 return 0;
1548 }
1549
1550
1551 module_init(lbs_init_module);
1552 module_exit(lbs_exit_module);
1553
1554 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1555 MODULE_AUTHOR("Marvell International Ltd.");
1556 MODULE_LICENSE("GPL");
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