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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / wireless / libertas / main.c
blob4d4e2f3b66acbf8480722c5dfaafc70b93d491c5
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 lbs_deb_enter(LBS_DEB_NET);
392
393 spin_lock_irq(&priv->driver_lock);
394
395 if (priv->monitormode != LBS_MONITOR_OFF) {
396 ret = -EBUSY;
397 goto out;
398 }
399
400 if (dev == priv->mesh_dev) {
401 priv->mesh_open = 1;
402 priv->mesh_connect_status = LBS_CONNECTED;
403 netif_carrier_on(dev);
404 } else {
405 priv->infra_open = 1;
406
407 if (priv->connect_status == LBS_CONNECTED)
408 netif_carrier_on(dev);
409 else
410 netif_carrier_off(dev);
411 }
412
413 if (!priv->tx_pending_len)
414 netif_wake_queue(dev);
415 out:
416
417 spin_unlock_irq(&priv->driver_lock);
418 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
419 return ret;
420 }
421
422 /**
423 * @brief This function closes the mshX interface
424 *
425 * @param dev A pointer to net_device structure
426 * @return 0
427 */
428 static int lbs_mesh_stop(struct net_device *dev)
429 {
430 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
431
432 lbs_deb_enter(LBS_DEB_MESH);
433 spin_lock_irq(&priv->driver_lock);
434
435 priv->mesh_open = 0;
436 priv->mesh_connect_status = LBS_DISCONNECTED;
437
438 netif_stop_queue(dev);
439 netif_carrier_off(dev);
440
441 spin_unlock_irq(&priv->driver_lock);
442
443 lbs_deb_leave(LBS_DEB_MESH);
444 return 0;
445 }
446
447 /**
448 * @brief This function closes the ethX interface
449 *
450 * @param dev A pointer to net_device structure
451 * @return 0
452 */
453 static int lbs_eth_stop(struct net_device *dev)
454 {
455 struct lbs_private *priv = (struct lbs_private *) dev->priv;
456
457 lbs_deb_enter(LBS_DEB_NET);
458
459 spin_lock_irq(&priv->driver_lock);
460 priv->infra_open = 0;
461 netif_stop_queue(dev);
462 spin_unlock_irq(&priv->driver_lock);
463
464 lbs_deb_leave(LBS_DEB_NET);
465 return 0;
466 }
467
468 static void lbs_tx_timeout(struct net_device *dev)
469 {
470 struct lbs_private *priv = (struct lbs_private *) dev->priv;
471
472 lbs_deb_enter(LBS_DEB_TX);
473
474 lbs_pr_err("tx watch dog timeout\n");
475
476 dev->trans_start = jiffies;
477
478 if (priv->currenttxskb) {
479 priv->eventcause = 0x01000000;
480 lbs_send_tx_feedback(priv);
481 }
482 /* XX: Shouldn't we also call into the hw-specific driver
483 to kick it somehow? */
484 lbs_host_to_card_done(priv);
485
486 /* More often than not, this actually happens because the
487 firmware has crapped itself -- rather than just a very
488 busy medium. So send a harmless command, and if/when
489 _that_ times out, we'll kick it in the head. */
490 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
491 0, 0, NULL);
492
493 lbs_deb_leave(LBS_DEB_TX);
494 }
495
496 void lbs_host_to_card_done(struct lbs_private *priv)
497 {
498 unsigned long flags;
499
500 lbs_deb_enter(LBS_DEB_THREAD);
501
502 spin_lock_irqsave(&priv->driver_lock, flags);
503
504 priv->dnld_sent = DNLD_RES_RECEIVED;
505
506 /* Wake main thread if commands are pending */
507 if (!priv->cur_cmd || priv->tx_pending_len > 0)
508 wake_up_interruptible(&priv->waitq);
509
510 spin_unlock_irqrestore(&priv->driver_lock, flags);
511 lbs_deb_leave(LBS_DEB_THREAD);
512 }
513 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
514
515 /**
516 * @brief This function returns the network statistics
517 *
518 * @param dev A pointer to struct lbs_private structure
519 * @return A pointer to net_device_stats structure
520 */
521 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
522 {
523 struct lbs_private *priv = (struct lbs_private *) dev->priv;
524
525 lbs_deb_enter(LBS_DEB_NET);
526 return &priv->stats;
527 }
528
529 static int lbs_set_mac_address(struct net_device *dev, void *addr)
530 {
531 int ret = 0;
532 struct lbs_private *priv = (struct lbs_private *) dev->priv;
533 struct sockaddr *phwaddr = addr;
534
535 lbs_deb_enter(LBS_DEB_NET);
536
537 /* In case it was called from the mesh device */
538 dev = priv->dev ;
539
540 memset(priv->current_addr, 0, ETH_ALEN);
541
542 /* dev->dev_addr is 8 bytes */
543 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
544
545 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
546 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
547
548 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
549 CMD_ACT_SET,
550 CMD_OPTION_WAITFORRSP, 0, NULL);
551
552 if (ret) {
553 lbs_deb_net("set MAC address failed\n");
554 ret = -1;
555 goto done;
556 }
557
558 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
559 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
560 if (priv->mesh_dev)
561 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
562
563 done:
564 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
565 return ret;
566 }
567
568 static int lbs_copy_multicast_address(struct lbs_private *priv,
569 struct net_device *dev)
570 {
571 int i = 0;
572 struct dev_mc_list *mcptr = dev->mc_list;
573
574 for (i = 0; i < dev->mc_count; i++) {
575 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
576 mcptr = mcptr->next;
577 }
578 return i;
579 }
580
581 static void lbs_set_multicast_list(struct net_device *dev)
582 {
583 struct lbs_private *priv = dev->priv;
584 int oldpacketfilter;
585 DECLARE_MAC_BUF(mac);
586
587 lbs_deb_enter(LBS_DEB_NET);
588
589 oldpacketfilter = priv->currentpacketfilter;
590
591 if (dev->flags & IFF_PROMISC) {
592 lbs_deb_net("enable promiscuous mode\n");
593 priv->currentpacketfilter |=
594 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
595 priv->currentpacketfilter &=
596 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
597 CMD_ACT_MAC_MULTICAST_ENABLE);
598 } else {
599 /* Multicast */
600 priv->currentpacketfilter &=
601 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
602
603 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
604 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
605 lbs_deb_net( "enabling all multicast\n");
606 priv->currentpacketfilter |=
607 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
608 priv->currentpacketfilter &=
609 ~CMD_ACT_MAC_MULTICAST_ENABLE;
610 } else {
611 priv->currentpacketfilter &=
612 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
613
614 if (!dev->mc_count) {
615 lbs_deb_net("no multicast addresses, "
616 "disabling multicast\n");
617 priv->currentpacketfilter &=
618 ~CMD_ACT_MAC_MULTICAST_ENABLE;
619 } else {
620 int i;
621
622 priv->currentpacketfilter |=
623 CMD_ACT_MAC_MULTICAST_ENABLE;
624
625 priv->nr_of_multicastmacaddr =
626 lbs_copy_multicast_address(priv, dev);
627
628 lbs_deb_net("multicast addresses: %d\n",
629 dev->mc_count);
630
631 for (i = 0; i < dev->mc_count; i++) {
632 lbs_deb_net("Multicast address %d: %s\n",
633 i, print_mac(mac,
634 priv->multicastlist[i]));
635 }
636 /* send multicast addresses to firmware */
637 lbs_prepare_and_send_command(priv,
638 CMD_MAC_MULTICAST_ADR,
639 CMD_ACT_SET, 0, 0,
640 NULL);
641 }
642 }
643 }
644
645 if (priv->currentpacketfilter != oldpacketfilter) {
646 lbs_set_mac_packet_filter(priv);
647 }
648
649 lbs_deb_leave(LBS_DEB_NET);
650 }
651
652 /**
653 * @brief This function handles the major jobs in the LBS driver.
654 * It handles all events generated by firmware, RX data received
655 * from firmware and TX data sent from kernel.
656 *
657 * @param data A pointer to lbs_thread structure
658 * @return 0
659 */
660 static int lbs_thread(void *data)
661 {
662 struct net_device *dev = data;
663 struct lbs_private *priv = dev->priv;
664 wait_queue_t wait;
665 u8 ireg = 0;
666
667 lbs_deb_enter(LBS_DEB_THREAD);
668
669 init_waitqueue_entry(&wait, current);
670
671 for (;;) {
672 int shouldsleep;
673
674 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
675 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
676
677 add_wait_queue(&priv->waitq, &wait);
678 set_current_state(TASK_INTERRUPTIBLE);
679 spin_lock_irq(&priv->driver_lock);
680
681 if (kthread_should_stop())
682 shouldsleep = 0; /* Bye */
683 else if (priv->surpriseremoved)
684 shouldsleep = 1; /* We need to wait until we're _told_ to die */
685 else if (priv->psstate == PS_STATE_SLEEP)
686 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
687 else if (priv->intcounter)
688 shouldsleep = 0; /* Interrupt pending. Deal with it now */
689 else if (priv->cmd_timed_out)
690 shouldsleep = 0; /* Command timed out. Recover */
691 else if (!priv->fw_ready)
692 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
693 else if (priv->dnld_sent)
694 shouldsleep = 1; /* Something is en route to the device already */
695 else if (priv->tx_pending_len > 0)
696 shouldsleep = 0; /* We've a packet to send */
697 else if (priv->cur_cmd)
698 shouldsleep = 1; /* Can't send a command; one already running */
699 else if (!list_empty(&priv->cmdpendingq))
700 shouldsleep = 0; /* We have a command to send */
701 else
702 shouldsleep = 1; /* No command */
703
704 if (shouldsleep) {
705 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
706 priv->connect_status, priv->intcounter,
707 priv->psmode, priv->psstate);
708 spin_unlock_irq(&priv->driver_lock);
709 schedule();
710 } else
711 spin_unlock_irq(&priv->driver_lock);
712
713 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
714 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
715
716 set_current_state(TASK_RUNNING);
717 remove_wait_queue(&priv->waitq, &wait);
718
719 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
720 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
721
722 if (kthread_should_stop()) {
723 lbs_deb_thread("main-thread: break from main thread\n");
724 break;
725 }
726
727 if (priv->surpriseremoved) {
728 lbs_deb_thread("adapter removed; waiting to die...\n");
729 continue;
730 }
731
732 spin_lock_irq(&priv->driver_lock);
733
734 if (priv->intcounter) {
735 u8 int_status;
736
737 priv->intcounter = 0;
738 int_status = priv->hw_get_int_status(priv, &ireg);
739
740 if (int_status) {
741 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
742 spin_unlock_irq(&priv->driver_lock);
743 continue;
744 }
745 priv->hisregcpy |= ireg;
746 }
747
748 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
749 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
750
751 /* command response? */
752 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
753 lbs_deb_thread("main-thread: cmd response ready\n");
754
755 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
756 spin_unlock_irq(&priv->driver_lock);
757 lbs_process_rx_command(priv);
758 spin_lock_irq(&priv->driver_lock);
759 }
760
761 if (priv->cmd_timed_out && priv->cur_cmd) {
762 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
763
764 if (++priv->nr_retries > 10) {
765 lbs_pr_info("Excessive timeouts submitting command %x\n",
766 le16_to_cpu(cmdnode->cmdbuf->command));
767 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
768 priv->nr_retries = 0;
769 } else {
770 priv->cur_cmd = NULL;
771 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
772 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
773
774 /* Stick it back at the _top_ of the pending queue
775 for immediate resubmission */
776 list_add(&cmdnode->list, &priv->cmdpendingq);
777 }
778 }
779 priv->cmd_timed_out = 0;
780
781 /* Any Card Event */
782 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
783 lbs_deb_thread("main-thread: Card Event Activity\n");
784
785 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
786
787 if (priv->hw_read_event_cause(priv)) {
788 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
789 spin_unlock_irq(&priv->driver_lock);
790 continue;
791 }
792 spin_unlock_irq(&priv->driver_lock);
793 lbs_process_event(priv);
794 } else
795 spin_unlock_irq(&priv->driver_lock);
796
797 if (!priv->fw_ready)
798 continue;
799
800 /* Check if we need to confirm Sleep Request received previously */
801 if (priv->psstate == PS_STATE_PRE_SLEEP &&
802 !priv->dnld_sent && !priv->cur_cmd) {
803 if (priv->connect_status == LBS_CONNECTED) {
804 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
805 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
806
807 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
808 } else {
809 /* workaround for firmware sending
810 * deauth/linkloss event immediately
811 * after sleep request; remove this
812 * after firmware fixes it
813 */
814 priv->psstate = PS_STATE_AWAKE;
815 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
816 }
817 }
818
819 /* The PS state is changed during processing of Sleep Request
820 * event above
821 */
822 if ((priv->psstate == PS_STATE_SLEEP) ||
823 (priv->psstate == PS_STATE_PRE_SLEEP))
824 continue;
825
826 /* Execute the next command */
827 if (!priv->dnld_sent && !priv->cur_cmd)
828 lbs_execute_next_command(priv);
829
830 /* Wake-up command waiters which can't sleep in
831 * lbs_prepare_and_send_command
832 */
833 if (!list_empty(&priv->cmdpendingq))
834 wake_up_all(&priv->cmd_pending);
835
836 spin_lock_irq(&priv->driver_lock);
837 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
838 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
839 priv->tx_pending_buf,
840 priv->tx_pending_len);
841 if (ret) {
842 lbs_deb_tx("host_to_card failed %d\n", ret);
843 priv->dnld_sent = DNLD_RES_RECEIVED;
844 }
845 priv->tx_pending_len = 0;
846 if (!priv->currenttxskb) {
847 /* We can wake the queues immediately if we aren't
848 waiting for TX feedback */
849 if (priv->connect_status == LBS_CONNECTED)
850 netif_wake_queue(priv->dev);
851 if (priv->mesh_dev &&
852 priv->mesh_connect_status == LBS_CONNECTED)
853 netif_wake_queue(priv->mesh_dev);
854 }
855 }
856 spin_unlock_irq(&priv->driver_lock);
857 }
858
859 del_timer(&priv->command_timer);
860 wake_up_all(&priv->cmd_pending);
861
862 lbs_deb_leave(LBS_DEB_THREAD);
863 return 0;
864 }
865
866 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
867 struct cmd_header *cmd)
868 {
869 lbs_deb_enter(LBS_DEB_FW);
870
871 netif_device_detach(priv->dev);
872 if (priv->mesh_dev)
873 netif_device_detach(priv->mesh_dev);
874
875 priv->fw_ready = 0;
876 lbs_deb_leave(LBS_DEB_FW);
877 return 0;
878 }
879
880 int lbs_suspend(struct lbs_private *priv)
881 {
882 struct cmd_header cmd;
883 int ret;
884
885 lbs_deb_enter(LBS_DEB_FW);
886
887 if (priv->wol_criteria == 0xffffffff) {
888 lbs_pr_info("Suspend attempt without configuring wake params!\n");
889 return -EINVAL;
890 }
891
892 memset(&cmd, 0, sizeof(cmd));
893
894 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
895 sizeof(cmd), lbs_suspend_callback, 0);
896 if (ret)
897 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
898
899 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
900 return ret;
901 }
902 EXPORT_SYMBOL_GPL(lbs_suspend);
903
904 int lbs_resume(struct lbs_private *priv)
905 {
906 lbs_deb_enter(LBS_DEB_FW);
907
908 priv->fw_ready = 1;
909
910 /* Firmware doesn't seem to give us RX packets any more
911 until we send it some command. Might as well update */
912 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
913 0, 0, NULL);
914
915 netif_device_attach(priv->dev);
916 if (priv->mesh_dev)
917 netif_device_attach(priv->mesh_dev);
918
919 lbs_deb_leave(LBS_DEB_FW);
920 return 0;
921 }
922 EXPORT_SYMBOL_GPL(lbs_resume);
923
924 /**
925 * @brief This function downloads firmware image, gets
926 * HW spec from firmware and set basic parameters to
927 * firmware.
928 *
929 * @param priv A pointer to struct lbs_private structure
930 * @return 0 or -1
931 */
932 static int lbs_setup_firmware(struct lbs_private *priv)
933 {
934 int ret = -1;
935
936 lbs_deb_enter(LBS_DEB_FW);
937
938 /*
939 * Read MAC address from HW
940 */
941 memset(priv->current_addr, 0xff, ETH_ALEN);
942 ret = lbs_update_hw_spec(priv);
943 if (ret) {
944 ret = -1;
945 goto done;
946 }
947
948 lbs_set_mac_packet_filter(priv);
949
950 ret = lbs_get_data_rate(priv);
951 if (ret < 0) {
952 ret = -1;
953 goto done;
954 }
955
956 ret = 0;
957 done:
958 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
959 return ret;
960 }
961
962 /**
963 * This function handles the timeout of command sending.
964 * It will re-send the same command again.
965 */
966 static void command_timer_fn(unsigned long data)
967 {
968 struct lbs_private *priv = (struct lbs_private *)data;
969 unsigned long flags;
970
971 lbs_deb_enter(LBS_DEB_CMD);
972 spin_lock_irqsave(&priv->driver_lock, flags);
973
974 if (!priv->cur_cmd) {
975 lbs_pr_info("Command timer expired; no pending command\n");
976 goto out;
977 }
978
979 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
980
981 priv->cmd_timed_out = 1;
982 wake_up_interruptible(&priv->waitq);
983 out:
984 spin_unlock_irqrestore(&priv->driver_lock, flags);
985 lbs_deb_leave(LBS_DEB_CMD);
986 }
987
988 static int lbs_init_adapter(struct lbs_private *priv)
989 {
990 size_t bufsize;
991 int i, ret = 0;
992
993 lbs_deb_enter(LBS_DEB_MAIN);
994
995 /* Allocate buffer to store the BSSID list */
996 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
997 priv->networks = kzalloc(bufsize, GFP_KERNEL);
998 if (!priv->networks) {
999 lbs_pr_err("Out of memory allocating beacons\n");
1000 ret = -1;
1001 goto out;
1002 }
1003
1004 /* Initialize scan result lists */
1005 INIT_LIST_HEAD(&priv->network_free_list);
1006 INIT_LIST_HEAD(&priv->network_list);
1007 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1008 list_add_tail(&priv->networks[i].list,
1009 &priv->network_free_list);
1010 }
1011
1012 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
1013 priv->lbs_ps_confirm_sleep.command =
1014 cpu_to_le16(CMD_802_11_PS_MODE);
1015 priv->lbs_ps_confirm_sleep.size =
1016 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
1017 priv->lbs_ps_confirm_sleep.action =
1018 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1019
1020 memset(priv->current_addr, 0xff, ETH_ALEN);
1021
1022 priv->connect_status = LBS_DISCONNECTED;
1023 priv->mesh_connect_status = LBS_DISCONNECTED;
1024 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1025 priv->mode = IW_MODE_INFRA;
1026 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1027 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1028 priv->radioon = RADIO_ON;
1029 priv->auto_rate = 1;
1030 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1031 priv->psmode = LBS802_11POWERMODECAM;
1032 priv->psstate = PS_STATE_FULL_POWER;
1033
1034 mutex_init(&priv->lock);
1035
1036 setup_timer(&priv->command_timer, command_timer_fn,
1037 (unsigned long)priv);
1038
1039 INIT_LIST_HEAD(&priv->cmdfreeq);
1040 INIT_LIST_HEAD(&priv->cmdpendingq);
1041
1042 spin_lock_init(&priv->driver_lock);
1043 init_waitqueue_head(&priv->cmd_pending);
1044
1045 /* Allocate the command buffers */
1046 if (lbs_allocate_cmd_buffer(priv)) {
1047 lbs_pr_err("Out of memory allocating command buffers\n");
1048 ret = -1;
1049 }
1050
1051 out:
1052 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1053
1054 return ret;
1055 }
1056
1057 static void lbs_free_adapter(struct lbs_private *priv)
1058 {
1059 lbs_deb_enter(LBS_DEB_MAIN);
1060
1061 lbs_free_cmd_buffer(priv);
1062 del_timer(&priv->command_timer);
1063 kfree(priv->networks);
1064 priv->networks = NULL;
1065
1066 lbs_deb_leave(LBS_DEB_MAIN);
1067 }
1068
1069 /**
1070 * @brief This function adds the card. it will probe the
1071 * card, allocate the lbs_priv and initialize the device.
1072 *
1073 * @param card A pointer to card
1074 * @return A pointer to struct lbs_private structure
1075 */
1076 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1077 {
1078 struct net_device *dev = NULL;
1079 struct lbs_private *priv = NULL;
1080
1081 lbs_deb_enter(LBS_DEB_MAIN);
1082
1083 /* Allocate an Ethernet device and register it */
1084 dev = alloc_etherdev(sizeof(struct lbs_private));
1085 if (!dev) {
1086 lbs_pr_err("init ethX device failed\n");
1087 goto done;
1088 }
1089 priv = dev->priv;
1090
1091 if (lbs_init_adapter(priv)) {
1092 lbs_pr_err("failed to initialize adapter structure.\n");
1093 goto err_init_adapter;
1094 }
1095
1096 priv->dev = dev;
1097 priv->card = card;
1098 priv->mesh_open = 0;
1099 priv->infra_open = 0;
1100
1101 /* Setup the OS Interface to our functions */
1102 dev->open = lbs_dev_open;
1103 dev->hard_start_xmit = lbs_hard_start_xmit;
1104 dev->stop = lbs_eth_stop;
1105 dev->set_mac_address = lbs_set_mac_address;
1106 dev->tx_timeout = lbs_tx_timeout;
1107 dev->get_stats = lbs_get_stats;
1108 dev->watchdog_timeo = 5 * HZ;
1109 dev->ethtool_ops = &lbs_ethtool_ops;
1110 #ifdef WIRELESS_EXT
1111 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1112 #endif
1113 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1114 dev->set_multicast_list = lbs_set_multicast_list;
1115
1116 SET_NETDEV_DEV(dev, dmdev);
1117
1118 priv->rtap_net_dev = NULL;
1119
1120 lbs_deb_thread("Starting main thread...\n");
1121 init_waitqueue_head(&priv->waitq);
1122 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1123 if (IS_ERR(priv->main_thread)) {
1124 lbs_deb_thread("Error creating main thread.\n");
1125 goto err_init_adapter;
1126 }
1127
1128 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1129 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1130 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1131 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1132
1133 sprintf(priv->mesh_ssid, "mesh");
1134 priv->mesh_ssid_len = 4;
1135
1136 priv->wol_criteria = 0xffffffff;
1137 priv->wol_gpio = 0xff;
1138
1139 goto done;
1140
1141 err_init_adapter:
1142 lbs_free_adapter(priv);
1143 free_netdev(dev);
1144 priv = NULL;
1145
1146 done:
1147 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1148 return priv;
1149 }
1150 EXPORT_SYMBOL_GPL(lbs_add_card);
1151
1152
1153 int lbs_remove_card(struct lbs_private *priv)
1154 {
1155 struct net_device *dev = priv->dev;
1156 union iwreq_data wrqu;
1157
1158 lbs_deb_enter(LBS_DEB_MAIN);
1159
1160 lbs_remove_mesh(priv);
1161 lbs_remove_rtap(priv);
1162
1163 dev = priv->dev;
1164
1165 cancel_delayed_work(&priv->scan_work);
1166 cancel_delayed_work(&priv->assoc_work);
1167 destroy_workqueue(priv->work_thread);
1168
1169 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1170 priv->psmode = LBS802_11POWERMODECAM;
1171 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1172 }
1173
1174 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1175 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1176 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1177
1178 /* Stop the thread servicing the interrupts */
1179 priv->surpriseremoved = 1;
1180 kthread_stop(priv->main_thread);
1181
1182 lbs_free_adapter(priv);
1183
1184 priv->dev = NULL;
1185 free_netdev(dev);
1186
1187 lbs_deb_leave(LBS_DEB_MAIN);
1188 return 0;
1189 }
1190 EXPORT_SYMBOL_GPL(lbs_remove_card);
1191
1192
1193 int lbs_start_card(struct lbs_private *priv)
1194 {
1195 struct net_device *dev = priv->dev;
1196 int ret = -1;
1197
1198 lbs_deb_enter(LBS_DEB_MAIN);
1199
1200 /* poke the firmware */
1201 ret = lbs_setup_firmware(priv);
1202 if (ret)
1203 goto done;
1204
1205 /* init 802.11d */
1206 lbs_init_11d(priv);
1207
1208 if (register_netdev(dev)) {
1209 lbs_pr_err("cannot register ethX device\n");
1210 goto done;
1211 }
1212 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1213 lbs_pr_err("cannot register lbs_rtap attribute\n");
1214
1215 lbs_update_channel(priv);
1216
1217 /* 5.0.16p0 is known to NOT support any mesh */
1218 if (priv->fwrelease > 0x05001000) {
1219 /* Enable mesh, if supported, and work out which TLV it uses.
1220 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1221 0x100 + 37 is the official value used in 5.110.21.pXX
1222 but we check them in that order because 20.pXX doesn't
1223 give an error -- it just silently fails. */
1224
1225 /* 5.110.20.pXX firmware will fail the command if the channel
1226 doesn't match the existing channel. But only if the TLV
1227 is correct. If the channel is wrong, _BOTH_ versions will
1228 give an error to 0x100+291, and allow 0x100+37 to succeed.
1229 It's just that 5.110.20.pXX will not have done anything
1230 useful */
1231
1232 priv->mesh_tlv = 0x100 + 291;
1233 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1234 priv->mesh_tlv = 0x100 + 37;
1235 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1236 priv->mesh_tlv = 0;
1237 }
1238 if (priv->mesh_tlv) {
1239 lbs_add_mesh(priv);
1240
1241 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1242 lbs_pr_err("cannot register lbs_mesh attribute\n");
1243 }
1244 }
1245
1246 lbs_debugfs_init_one(priv, dev);
1247
1248 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1249
1250 ret = 0;
1251
1252 done:
1253 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1254 return ret;
1255 }
1256 EXPORT_SYMBOL_GPL(lbs_start_card);
1257
1258
1259 int lbs_stop_card(struct lbs_private *priv)
1260 {
1261 struct net_device *dev = priv->dev;
1262 int ret = -1;
1263 struct cmd_ctrl_node *cmdnode;
1264 unsigned long flags;
1265
1266 lbs_deb_enter(LBS_DEB_MAIN);
1267
1268 netif_stop_queue(priv->dev);
1269 netif_carrier_off(priv->dev);
1270
1271 lbs_debugfs_remove_one(priv);
1272 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1273 if (priv->mesh_tlv)
1274 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1275
1276 /* Flush pending command nodes */
1277 spin_lock_irqsave(&priv->driver_lock, flags);
1278 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1279 cmdnode->result = -ENOENT;
1280 cmdnode->cmdwaitqwoken = 1;
1281 wake_up_interruptible(&cmdnode->cmdwait_q);
1282 }
1283 spin_unlock_irqrestore(&priv->driver_lock, flags);
1284
1285 unregister_netdev(dev);
1286
1287 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1288 return ret;
1289 }
1290 EXPORT_SYMBOL_GPL(lbs_stop_card);
1291
1292
1293 /**
1294 * @brief This function adds mshX interface
1295 *
1296 * @param priv A pointer to the struct lbs_private structure
1297 * @return 0 if successful, -X otherwise
1298 */
1299 static int lbs_add_mesh(struct lbs_private *priv)
1300 {
1301 struct net_device *mesh_dev = NULL;
1302 int ret = 0;
1303
1304 lbs_deb_enter(LBS_DEB_MESH);
1305
1306 /* Allocate a virtual mesh device */
1307 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1308 lbs_deb_mesh("init mshX device failed\n");
1309 ret = -ENOMEM;
1310 goto done;
1311 }
1312 mesh_dev->priv = priv;
1313 priv->mesh_dev = mesh_dev;
1314
1315 mesh_dev->open = lbs_dev_open;
1316 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1317 mesh_dev->stop = lbs_mesh_stop;
1318 mesh_dev->get_stats = lbs_get_stats;
1319 mesh_dev->set_mac_address = lbs_set_mac_address;
1320 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1321 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1322 sizeof(priv->dev->dev_addr));
1323
1324 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1325
1326 #ifdef WIRELESS_EXT
1327 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1328 #endif
1329 /* Register virtual mesh interface */
1330 ret = register_netdev(mesh_dev);
1331 if (ret) {
1332 lbs_pr_err("cannot register mshX virtual interface\n");
1333 goto err_free;
1334 }
1335
1336 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1337 if (ret)
1338 goto err_unregister;
1339
1340 /* Everything successful */
1341 ret = 0;
1342 goto done;
1343
1344 err_unregister:
1345 unregister_netdev(mesh_dev);
1346
1347 err_free:
1348 free_netdev(mesh_dev);
1349
1350 done:
1351 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1352 return ret;
1353 }
1354
1355 static void lbs_remove_mesh(struct lbs_private *priv)
1356 {
1357 struct net_device *mesh_dev;
1358
1359
1360 mesh_dev = priv->mesh_dev;
1361 if (!mesh_dev)
1362 return;
1363
1364 lbs_deb_enter(LBS_DEB_MESH);
1365 netif_stop_queue(mesh_dev);
1366 netif_carrier_off(priv->mesh_dev);
1367 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1368 unregister_netdev(mesh_dev);
1369 priv->mesh_dev = NULL;
1370 free_netdev(mesh_dev);
1371 lbs_deb_leave(LBS_DEB_MESH);
1372 }
1373
1374 /**
1375 * @brief This function finds the CFP in
1376 * region_cfp_table based on region and band parameter.
1377 *
1378 * @param region The region code
1379 * @param band The band
1380 * @param cfp_no A pointer to CFP number
1381 * @return A pointer to CFP
1382 */
1383 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1384 {
1385 int i, end;
1386
1387 lbs_deb_enter(LBS_DEB_MAIN);
1388
1389 end = ARRAY_SIZE(region_cfp_table);
1390
1391 for (i = 0; i < end ; i++) {
1392 lbs_deb_main("region_cfp_table[i].region=%d\n",
1393 region_cfp_table[i].region);
1394 if (region_cfp_table[i].region == region) {
1395 *cfp_no = region_cfp_table[i].cfp_no_BG;
1396 lbs_deb_leave(LBS_DEB_MAIN);
1397 return region_cfp_table[i].cfp_BG;
1398 }
1399 }
1400
1401 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1402 return NULL;
1403 }
1404
1405 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1406 {
1407 int ret = 0;
1408 int i = 0;
1409
1410 struct chan_freq_power *cfp;
1411 int cfp_no;
1412
1413 lbs_deb_enter(LBS_DEB_MAIN);
1414
1415 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1416
1417 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1418 if (cfp != NULL) {
1419 priv->region_channel[i].nrcfp = cfp_no;
1420 priv->region_channel[i].CFP = cfp;
1421 } else {
1422 lbs_deb_main("wrong region code %#x in band B/G\n",
1423 region);
1424 ret = -1;
1425 goto out;
1426 }
1427 priv->region_channel[i].valid = 1;
1428 priv->region_channel[i].region = region;
1429 priv->region_channel[i].band = band;
1430 i++;
1431 out:
1432 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1433 return ret;
1434 }
1435
1436 /**
1437 * @brief This function handles the interrupt. it will change PS
1438 * state if applicable. it will wake up main_thread to handle
1439 * the interrupt event as well.
1440 *
1441 * @param dev A pointer to net_device structure
1442 * @return n/a
1443 */
1444 void lbs_interrupt(struct lbs_private *priv)
1445 {
1446 lbs_deb_enter(LBS_DEB_THREAD);
1447
1448 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1449 priv->intcounter++;
1450 if (priv->psstate == PS_STATE_SLEEP)
1451 priv->psstate = PS_STATE_AWAKE;
1452 wake_up_interruptible(&priv->waitq);
1453
1454 lbs_deb_leave(LBS_DEB_THREAD);
1455 }
1456 EXPORT_SYMBOL_GPL(lbs_interrupt);
1457
1458 static int __init lbs_init_module(void)
1459 {
1460 lbs_deb_enter(LBS_DEB_MAIN);
1461 lbs_debugfs_init();
1462 lbs_deb_leave(LBS_DEB_MAIN);
1463 return 0;
1464 }
1465
1466 static void __exit lbs_exit_module(void)
1467 {
1468 lbs_deb_enter(LBS_DEB_MAIN);
1469 lbs_debugfs_remove();
1470 lbs_deb_leave(LBS_DEB_MAIN);
1471 }
1472
1473 /*
1474 * rtap interface support fuctions
1475 */
1476
1477 static int lbs_rtap_open(struct net_device *dev)
1478 {
1479 /* Yes, _stop_ the queue. Because we don't support injection */
1480 lbs_deb_enter(LBS_DEB_MAIN);
1481 netif_carrier_off(dev);
1482 netif_stop_queue(dev);
1483 lbs_deb_leave(LBS_DEB_LEAVE);
1484 return 0;
1485 }
1486
1487 static int lbs_rtap_stop(struct net_device *dev)
1488 {
1489 lbs_deb_enter(LBS_DEB_MAIN);
1490 lbs_deb_leave(LBS_DEB_MAIN);
1491 return 0;
1492 }
1493
1494 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1495 {
1496 netif_stop_queue(dev);
1497 return NETDEV_TX_BUSY;
1498 }
1499
1500 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1501 {
1502 struct lbs_private *priv = dev->priv;
1503 lbs_deb_enter(LBS_DEB_NET);
1504 return &priv->stats;
1505 }
1506
1507
1508 static void lbs_remove_rtap(struct lbs_private *priv)
1509 {
1510 lbs_deb_enter(LBS_DEB_MAIN);
1511 if (priv->rtap_net_dev == NULL)
1512 return;
1513 unregister_netdev(priv->rtap_net_dev);
1514 free_netdev(priv->rtap_net_dev);
1515 priv->rtap_net_dev = NULL;
1516 lbs_deb_leave(LBS_DEB_MAIN);
1517 }
1518
1519 static int lbs_add_rtap(struct lbs_private *priv)
1520 {
1521 int ret = 0;
1522 struct net_device *rtap_dev;
1523
1524 lbs_deb_enter(LBS_DEB_MAIN);
1525 if (priv->rtap_net_dev) {
1526 ret = -EPERM;
1527 goto out;
1528 }
1529
1530 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1531 if (rtap_dev == NULL) {
1532 ret = -ENOMEM;
1533 goto out;
1534 }
1535
1536 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1537 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1538 rtap_dev->open = lbs_rtap_open;
1539 rtap_dev->stop = lbs_rtap_stop;
1540 rtap_dev->get_stats = lbs_rtap_get_stats;
1541 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1542 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1543 rtap_dev->priv = priv;
1544
1545 ret = register_netdev(rtap_dev);
1546 if (ret) {
1547 free_netdev(rtap_dev);
1548 goto out;
1549 }
1550 priv->rtap_net_dev = rtap_dev;
1551
1552 out:
1553 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1554 return ret;
1555 }
1556
1557
1558 module_init(lbs_init_module);
1559 module_exit(lbs_exit_module);
1560
1561 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1562 MODULE_AUTHOR("Marvell International Ltd.");
1563 MODULE_LICENSE("GPL");
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