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[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / libertas / main.c
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13 #include <linux/kfifo.h>
14 #include <linux/stddef.h>
15
16 #include <net/iw_handler.h>
17 #include <net/ieee80211.h>
18
19 #include "host.h"
20 #include "decl.h"
21 #include "dev.h"
22 #include "wext.h"
23 #include "debugfs.h"
24 #include "scan.h"
25 #include "assoc.h"
26 #include "cmd.h"
27
28 #define DRIVER_RELEASE_VERSION "323.p0"
29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
30 #ifdef DEBUG
31 "-dbg"
32 #endif
33 "";
34
35
36 /* Module parameters */
37 unsigned int lbs_debug;
38 EXPORT_SYMBOL_GPL(lbs_debug);
39 module_param_named(libertas_debug, lbs_debug, int, 0644);
40
41
42 /* This global structure is used to send the confirm_sleep command as
43 * fast as possible down to the firmware. */
44 struct cmd_confirm_sleep confirm_sleep;
45
46
47 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
48 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
49 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
50 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
51 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
52
53 /* Format { channel, frequency (MHz), maxtxpower } */
54 /* band: 'B/G', region: USA FCC/Canada IC */
55 static struct chan_freq_power channel_freq_power_US_BG[] = {
56 {1, 2412, LBS_TX_PWR_US_DEFAULT},
57 {2, 2417, LBS_TX_PWR_US_DEFAULT},
58 {3, 2422, LBS_TX_PWR_US_DEFAULT},
59 {4, 2427, LBS_TX_PWR_US_DEFAULT},
60 {5, 2432, LBS_TX_PWR_US_DEFAULT},
61 {6, 2437, LBS_TX_PWR_US_DEFAULT},
62 {7, 2442, LBS_TX_PWR_US_DEFAULT},
63 {8, 2447, LBS_TX_PWR_US_DEFAULT},
64 {9, 2452, LBS_TX_PWR_US_DEFAULT},
65 {10, 2457, LBS_TX_PWR_US_DEFAULT},
66 {11, 2462, LBS_TX_PWR_US_DEFAULT}
67 };
68
69 /* band: 'B/G', region: Europe ETSI */
70 static struct chan_freq_power channel_freq_power_EU_BG[] = {
71 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
72 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
73 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
74 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
75 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
76 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
77 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
78 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
79 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
80 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
81 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
82 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
83 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
84 };
85
86 /* band: 'B/G', region: Spain */
87 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
88 {10, 2457, LBS_TX_PWR_DEFAULT},
89 {11, 2462, LBS_TX_PWR_DEFAULT}
90 };
91
92 /* band: 'B/G', region: France */
93 static struct chan_freq_power channel_freq_power_FR_BG[] = {
94 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
95 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
96 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
97 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
98 };
99
100 /* band: 'B/G', region: Japan */
101 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
102 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
103 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
104 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
105 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
106 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
107 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
108 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
109 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
110 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
111 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
112 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
113 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
114 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
115 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
116 };
117
118 /**
119 * the structure for channel, frequency and power
120 */
121 struct region_cfp_table {
122 u8 region;
123 struct chan_freq_power *cfp_BG;
124 int cfp_no_BG;
125 };
126
127 /**
128 * the structure for the mapping between region and CFP
129 */
130 static struct region_cfp_table region_cfp_table[] = {
131 {0x10, /*US FCC */
132 channel_freq_power_US_BG,
133 ARRAY_SIZE(channel_freq_power_US_BG),
134 }
135 ,
136 {0x20, /*CANADA IC */
137 channel_freq_power_US_BG,
138 ARRAY_SIZE(channel_freq_power_US_BG),
139 }
140 ,
141 {0x30, /*EU*/ channel_freq_power_EU_BG,
142 ARRAY_SIZE(channel_freq_power_EU_BG),
143 }
144 ,
145 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
146 ARRAY_SIZE(channel_freq_power_SPN_BG),
147 }
148 ,
149 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
150 ARRAY_SIZE(channel_freq_power_FR_BG),
151 }
152 ,
153 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
154 ARRAY_SIZE(channel_freq_power_JPN_BG),
155 }
156 ,
157 /*Add new region here */
158 };
159
160 /**
161 * the table to keep region code
162 */
163 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
164 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
165
166 /**
167 * 802.11b/g supported bitrates (in 500Kb/s units)
168 */
169 u8 lbs_bg_rates[MAX_RATES] =
170 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
171 0x00, 0x00 };
172
173 /**
174 * FW rate table. FW refers to rates by their index in this table, not by the
175 * rate value itself. Values of 0x00 are
176 * reserved positions.
177 */
178 static u8 fw_data_rates[MAX_RATES] =
179 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
180 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
181 };
182
183 /**
184 * @brief use index to get the data rate
185 *
186 * @param idx The index of data rate
187 * @return data rate or 0
188 */
189 u32 lbs_fw_index_to_data_rate(u8 idx)
190 {
191 if (idx >= sizeof(fw_data_rates))
192 idx = 0;
193 return fw_data_rates[idx];
194 }
195
196 /**
197 * @brief use rate to get the index
198 *
199 * @param rate data rate
200 * @return index or 0
201 */
202 u8 lbs_data_rate_to_fw_index(u32 rate)
203 {
204 u8 i;
205
206 if (!rate)
207 return 0;
208
209 for (i = 0; i < sizeof(fw_data_rates); i++) {
210 if (rate == fw_data_rates[i])
211 return i;
212 }
213 return 0;
214 }
215
216 /**
217 * Attributes exported through sysfs
218 */
219
220 /**
221 * @brief Get function for sysfs attribute anycast_mask
222 */
223 static ssize_t lbs_anycast_get(struct device *dev,
224 struct device_attribute *attr, char * buf)
225 {
226 struct lbs_private *priv = to_net_dev(dev)->priv;
227 struct cmd_ds_mesh_access mesh_access;
228 int ret;
229
230 memset(&mesh_access, 0, sizeof(mesh_access));
231
232 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
233 if (ret)
234 return ret;
235
236 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
237 }
238
239 /**
240 * @brief Set function for sysfs attribute anycast_mask
241 */
242 static ssize_t lbs_anycast_set(struct device *dev,
243 struct device_attribute *attr, const char * buf, size_t count)
244 {
245 struct lbs_private *priv = to_net_dev(dev)->priv;
246 struct cmd_ds_mesh_access mesh_access;
247 uint32_t datum;
248 int ret;
249
250 memset(&mesh_access, 0, sizeof(mesh_access));
251 sscanf(buf, "%x", &datum);
252 mesh_access.data[0] = cpu_to_le32(datum);
253
254 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
255 if (ret)
256 return ret;
257
258 return strlen(buf);
259 }
260
261 static int lbs_add_rtap(struct lbs_private *priv);
262 static void lbs_remove_rtap(struct lbs_private *priv);
263 static int lbs_add_mesh(struct lbs_private *priv);
264 static void lbs_remove_mesh(struct lbs_private *priv);
265
266
267 /**
268 * Get function for sysfs attribute rtap
269 */
270 static ssize_t lbs_rtap_get(struct device *dev,
271 struct device_attribute *attr, char * buf)
272 {
273 struct lbs_private *priv = to_net_dev(dev)->priv;
274 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
275 }
276
277 /**
278 * Set function for sysfs attribute rtap
279 */
280 static ssize_t lbs_rtap_set(struct device *dev,
281 struct device_attribute *attr, const char * buf, size_t count)
282 {
283 int monitor_mode;
284 struct lbs_private *priv = to_net_dev(dev)->priv;
285
286 sscanf(buf, "%x", &monitor_mode);
287 if (monitor_mode) {
288 if (priv->monitormode == monitor_mode)
289 return strlen(buf);
290 if (!priv->monitormode) {
291 if (priv->infra_open || priv->mesh_open)
292 return -EBUSY;
293 if (priv->mode == IW_MODE_INFRA)
294 lbs_send_deauthentication(priv);
295 else if (priv->mode == IW_MODE_ADHOC)
296 lbs_stop_adhoc_network(priv);
297 lbs_add_rtap(priv);
298 }
299 priv->monitormode = monitor_mode;
300 }
301
302 else {
303 if (!priv->monitormode)
304 return strlen(buf);
305 priv->monitormode = 0;
306 lbs_remove_rtap(priv);
307
308 if (priv->currenttxskb) {
309 dev_kfree_skb_any(priv->currenttxskb);
310 priv->currenttxskb = NULL;
311 }
312
313 /* Wake queues, command thread, etc. */
314 lbs_host_to_card_done(priv);
315 }
316
317 lbs_prepare_and_send_command(priv,
318 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
319 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
320 return strlen(buf);
321 }
322
323 /**
324 * lbs_rtap attribute to be exported per ethX interface
325 * through sysfs (/sys/class/net/ethX/lbs_rtap)
326 */
327 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
328
329 /**
330 * Get function for sysfs attribute mesh
331 */
332 static ssize_t lbs_mesh_get(struct device *dev,
333 struct device_attribute *attr, char * buf)
334 {
335 struct lbs_private *priv = to_net_dev(dev)->priv;
336 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
337 }
338
339 /**
340 * Set function for sysfs attribute mesh
341 */
342 static ssize_t lbs_mesh_set(struct device *dev,
343 struct device_attribute *attr, const char * buf, size_t count)
344 {
345 struct lbs_private *priv = to_net_dev(dev)->priv;
346 int enable;
347 int ret;
348
349 sscanf(buf, "%x", &enable);
350 enable = !!enable;
351 if (enable == !!priv->mesh_dev)
352 return count;
353
354 ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
355 if (ret)
356 return ret;
357
358 if (enable)
359 lbs_add_mesh(priv);
360 else
361 lbs_remove_mesh(priv);
362
363 return count;
364 }
365
366 /**
367 * lbs_mesh attribute to be exported per ethX interface
368 * through sysfs (/sys/class/net/ethX/lbs_mesh)
369 */
370 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
371
372 /**
373 * anycast_mask attribute to be exported per mshX interface
374 * through sysfs (/sys/class/net/mshX/anycast_mask)
375 */
376 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
377
378 static struct attribute *lbs_mesh_sysfs_entries[] = {
379 &dev_attr_anycast_mask.attr,
380 NULL,
381 };
382
383 static struct attribute_group lbs_mesh_attr_group = {
384 .attrs = lbs_mesh_sysfs_entries,
385 };
386
387 /**
388 * @brief This function opens the ethX or mshX interface
389 *
390 * @param dev A pointer to net_device structure
391 * @return 0 or -EBUSY if monitor mode active
392 */
393 static int lbs_dev_open(struct net_device *dev)
394 {
395 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
396 int ret = 0;
397
398 lbs_deb_enter(LBS_DEB_NET);
399
400 spin_lock_irq(&priv->driver_lock);
401
402 if (priv->monitormode) {
403 ret = -EBUSY;
404 goto out;
405 }
406
407 if (dev == priv->mesh_dev) {
408 priv->mesh_open = 1;
409 priv->mesh_connect_status = LBS_CONNECTED;
410 netif_carrier_on(dev);
411 } else {
412 priv->infra_open = 1;
413
414 if (priv->connect_status == LBS_CONNECTED)
415 netif_carrier_on(dev);
416 else
417 netif_carrier_off(dev);
418 }
419
420 if (!priv->tx_pending_len)
421 netif_wake_queue(dev);
422 out:
423
424 spin_unlock_irq(&priv->driver_lock);
425 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
426 return ret;
427 }
428
429 /**
430 * @brief This function closes the mshX interface
431 *
432 * @param dev A pointer to net_device structure
433 * @return 0
434 */
435 static int lbs_mesh_stop(struct net_device *dev)
436 {
437 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
438
439 lbs_deb_enter(LBS_DEB_MESH);
440 spin_lock_irq(&priv->driver_lock);
441
442 priv->mesh_open = 0;
443 priv->mesh_connect_status = LBS_DISCONNECTED;
444
445 netif_stop_queue(dev);
446 netif_carrier_off(dev);
447
448 spin_unlock_irq(&priv->driver_lock);
449
450 schedule_work(&priv->mcast_work);
451
452 lbs_deb_leave(LBS_DEB_MESH);
453 return 0;
454 }
455
456 /**
457 * @brief This function closes the ethX interface
458 *
459 * @param dev A pointer to net_device structure
460 * @return 0
461 */
462 static int lbs_eth_stop(struct net_device *dev)
463 {
464 struct lbs_private *priv = (struct lbs_private *) dev->priv;
465
466 lbs_deb_enter(LBS_DEB_NET);
467
468 spin_lock_irq(&priv->driver_lock);
469 priv->infra_open = 0;
470 netif_stop_queue(dev);
471 spin_unlock_irq(&priv->driver_lock);
472
473 schedule_work(&priv->mcast_work);
474
475 lbs_deb_leave(LBS_DEB_NET);
476 return 0;
477 }
478
479 static void lbs_tx_timeout(struct net_device *dev)
480 {
481 struct lbs_private *priv = (struct lbs_private *) dev->priv;
482
483 lbs_deb_enter(LBS_DEB_TX);
484
485 lbs_pr_err("tx watch dog timeout\n");
486
487 dev->trans_start = jiffies;
488
489 if (priv->currenttxskb)
490 lbs_send_tx_feedback(priv, 0);
491
492 /* XX: Shouldn't we also call into the hw-specific driver
493 to kick it somehow? */
494 lbs_host_to_card_done(priv);
495
496 /* More often than not, this actually happens because the
497 firmware has crapped itself -- rather than just a very
498 busy medium. So send a harmless command, and if/when
499 _that_ times out, we'll kick it in the head. */
500 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
501 0, 0, NULL);
502
503 lbs_deb_leave(LBS_DEB_TX);
504 }
505
506 void lbs_host_to_card_done(struct lbs_private *priv)
507 {
508 unsigned long flags;
509
510 lbs_deb_enter(LBS_DEB_THREAD);
511
512 spin_lock_irqsave(&priv->driver_lock, flags);
513
514 priv->dnld_sent = DNLD_RES_RECEIVED;
515
516 /* Wake main thread if commands are pending */
517 if (!priv->cur_cmd || priv->tx_pending_len > 0)
518 wake_up_interruptible(&priv->waitq);
519
520 spin_unlock_irqrestore(&priv->driver_lock, flags);
521 lbs_deb_leave(LBS_DEB_THREAD);
522 }
523 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
524
525 /**
526 * @brief This function returns the network statistics
527 *
528 * @param dev A pointer to struct lbs_private structure
529 * @return A pointer to net_device_stats structure
530 */
531 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
532 {
533 struct lbs_private *priv = (struct lbs_private *) dev->priv;
534
535 lbs_deb_enter(LBS_DEB_NET);
536 return &priv->stats;
537 }
538
539 static int lbs_set_mac_address(struct net_device *dev, void *addr)
540 {
541 int ret = 0;
542 struct lbs_private *priv = (struct lbs_private *) dev->priv;
543 struct sockaddr *phwaddr = addr;
544 struct cmd_ds_802_11_mac_address cmd;
545
546 lbs_deb_enter(LBS_DEB_NET);
547
548 /* In case it was called from the mesh device */
549 dev = priv->dev;
550
551 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
552 cmd.action = cpu_to_le16(CMD_ACT_SET);
553 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
554
555 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
556 if (ret) {
557 lbs_deb_net("set MAC address failed\n");
558 goto done;
559 }
560
561 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
562 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
563 if (priv->mesh_dev)
564 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
565
566 done:
567 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
568 return ret;
569 }
570
571
572 static inline int mac_in_list(unsigned char *list, int list_len,
573 unsigned char *mac)
574 {
575 while (list_len) {
576 if (!memcmp(list, mac, ETH_ALEN))
577 return 1;
578 list += ETH_ALEN;
579 list_len--;
580 }
581 return 0;
582 }
583
584
585 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
586 struct net_device *dev, int nr_addrs)
587 {
588 int i = nr_addrs;
589 struct dev_mc_list *mc_list;
590 DECLARE_MAC_BUF(mac);
591
592 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
593 return nr_addrs;
594
595 netif_tx_lock_bh(dev);
596 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
597 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
598 lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
599 print_mac(mac, mc_list->dmi_addr));
600 continue;
601 }
602
603 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
604 break;
605 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
606 lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
607 print_mac(mac, mc_list->dmi_addr));
608 i++;
609 }
610 netif_tx_unlock_bh(dev);
611 if (mc_list)
612 return -EOVERFLOW;
613
614 return i;
615 }
616
617 static void lbs_set_mcast_worker(struct work_struct *work)
618 {
619 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
620 struct cmd_ds_mac_multicast_adr mcast_cmd;
621 int dev_flags;
622 int nr_addrs;
623 int old_mac_control = priv->mac_control;
624
625 lbs_deb_enter(LBS_DEB_NET);
626
627 dev_flags = priv->dev->flags;
628 if (priv->mesh_dev)
629 dev_flags |= priv->mesh_dev->flags;
630
631 if (dev_flags & IFF_PROMISC) {
632 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
633 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
634 CMD_ACT_MAC_MULTICAST_ENABLE);
635 goto out_set_mac_control;
636 } else if (dev_flags & IFF_ALLMULTI) {
637 do_allmulti:
638 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
639 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
640 CMD_ACT_MAC_MULTICAST_ENABLE);
641 goto out_set_mac_control;
642 }
643
644 /* Once for priv->dev, again for priv->mesh_dev if it exists */
645 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
646 if (nr_addrs >= 0 && priv->mesh_dev)
647 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
648 if (nr_addrs < 0)
649 goto do_allmulti;
650
651 if (nr_addrs) {
652 int size = offsetof(struct cmd_ds_mac_multicast_adr,
653 maclist[6*nr_addrs]);
654
655 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
656 mcast_cmd.hdr.size = cpu_to_le16(size);
657 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
658
659 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
660
661 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
662 } else
663 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
664
665 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
666 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
667 out_set_mac_control:
668 if (priv->mac_control != old_mac_control)
669 lbs_set_mac_control(priv);
670
671 lbs_deb_leave(LBS_DEB_NET);
672 }
673
674 static void lbs_set_multicast_list(struct net_device *dev)
675 {
676 struct lbs_private *priv = dev->priv;
677
678 schedule_work(&priv->mcast_work);
679 }
680
681 /**
682 * @brief This function handles the major jobs in the LBS driver.
683 * It handles all events generated by firmware, RX data received
684 * from firmware and TX data sent from kernel.
685 *
686 * @param data A pointer to lbs_thread structure
687 * @return 0
688 */
689 static int lbs_thread(void *data)
690 {
691 struct net_device *dev = data;
692 struct lbs_private *priv = dev->priv;
693 wait_queue_t wait;
694
695 lbs_deb_enter(LBS_DEB_THREAD);
696
697 init_waitqueue_entry(&wait, current);
698
699 for (;;) {
700 int shouldsleep;
701 u8 resp_idx;
702
703 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
704 priv->currenttxskb, priv->dnld_sent);
705
706 add_wait_queue(&priv->waitq, &wait);
707 set_current_state(TASK_INTERRUPTIBLE);
708 spin_lock_irq(&priv->driver_lock);
709
710 if (kthread_should_stop())
711 shouldsleep = 0; /* Bye */
712 else if (priv->surpriseremoved)
713 shouldsleep = 1; /* We need to wait until we're _told_ to die */
714 else if (priv->psstate == PS_STATE_SLEEP)
715 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
716 else if (priv->cmd_timed_out)
717 shouldsleep = 0; /* Command timed out. Recover */
718 else if (!priv->fw_ready)
719 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
720 else if (priv->dnld_sent)
721 shouldsleep = 1; /* Something is en route to the device already */
722 else if (priv->tx_pending_len > 0)
723 shouldsleep = 0; /* We've a packet to send */
724 else if (priv->cur_cmd)
725 shouldsleep = 1; /* Can't send a command; one already running */
726 else if (!list_empty(&priv->cmdpendingq))
727 shouldsleep = 0; /* We have a command to send */
728 else if (__kfifo_len(priv->event_fifo))
729 shouldsleep = 0; /* We have an event to process */
730 else if (priv->resp_len[priv->resp_idx])
731 shouldsleep = 0; /* We have a command response */
732 else
733 shouldsleep = 1; /* No command */
734
735 if (shouldsleep) {
736 lbs_deb_thread("sleeping, connect_status %d, "
737 "psmode %d, psstate %d\n",
738 priv->connect_status,
739 priv->psmode, priv->psstate);
740 spin_unlock_irq(&priv->driver_lock);
741 schedule();
742 } else
743 spin_unlock_irq(&priv->driver_lock);
744
745 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
746 priv->currenttxskb, priv->dnld_sent);
747
748 set_current_state(TASK_RUNNING);
749 remove_wait_queue(&priv->waitq, &wait);
750
751 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
752 priv->currenttxskb, priv->dnld_sent);
753
754 if (kthread_should_stop()) {
755 lbs_deb_thread("break from main thread\n");
756 break;
757 }
758
759 if (priv->surpriseremoved) {
760 lbs_deb_thread("adapter removed; waiting to die...\n");
761 continue;
762 }
763
764 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
765 priv->currenttxskb, priv->dnld_sent);
766
767 spin_lock_irq(&priv->driver_lock);
768 /* Process any pending command response */
769 resp_idx = priv->resp_idx;
770 if (priv->resp_len[resp_idx]) {
771 spin_unlock_irq(&priv->driver_lock);
772 lbs_process_command_response(priv,
773 priv->resp_buf[resp_idx],
774 priv->resp_len[resp_idx]);
775 spin_lock_irq(&priv->driver_lock);
776 priv->resp_len[resp_idx] = 0;
777 }
778 spin_unlock_irq(&priv->driver_lock);
779
780 /* command timeout stuff */
781 if (priv->cmd_timed_out && priv->cur_cmd) {
782 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
783
784 if (++priv->nr_retries > 10) {
785 lbs_pr_info("Excessive timeouts submitting command %x\n",
786 le16_to_cpu(cmdnode->cmdbuf->command));
787 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
788 priv->nr_retries = 0;
789 } else {
790 priv->cur_cmd = NULL;
791 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
792 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
793
794 /* Stick it back at the _top_ of the pending queue
795 for immediate resubmission */
796 list_add(&cmdnode->list, &priv->cmdpendingq);
797 }
798 }
799 priv->cmd_timed_out = 0;
800
801 /* Process hardware events, e.g. card removed, link lost */
802 spin_lock_irq(&priv->driver_lock);
803 while (__kfifo_len(priv->event_fifo)) {
804 u32 event;
805
806 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
807 sizeof(event));
808 spin_unlock_irq(&priv->driver_lock);
809 lbs_process_event(priv, event);
810 spin_lock_irq(&priv->driver_lock);
811 }
812 spin_unlock_irq(&priv->driver_lock);
813
814 if (!priv->fw_ready)
815 continue;
816
817 /* Check if we need to confirm Sleep Request received previously */
818 if (priv->psstate == PS_STATE_PRE_SLEEP &&
819 !priv->dnld_sent && !priv->cur_cmd) {
820 if (priv->connect_status == LBS_CONNECTED) {
821 lbs_deb_thread("pre-sleep, currenttxskb %p, "
822 "dnld_sent %d, cur_cmd %p\n",
823 priv->currenttxskb, priv->dnld_sent,
824 priv->cur_cmd);
825
826 lbs_ps_confirm_sleep(priv);
827 } else {
828 /* workaround for firmware sending
829 * deauth/linkloss event immediately
830 * after sleep request; remove this
831 * after firmware fixes it
832 */
833 priv->psstate = PS_STATE_AWAKE;
834 lbs_pr_alert("ignore PS_SleepConfirm in "
835 "non-connected state\n");
836 }
837 }
838
839 /* The PS state is changed during processing of Sleep Request
840 * event above
841 */
842 if ((priv->psstate == PS_STATE_SLEEP) ||
843 (priv->psstate == PS_STATE_PRE_SLEEP))
844 continue;
845
846 /* Execute the next command */
847 if (!priv->dnld_sent && !priv->cur_cmd)
848 lbs_execute_next_command(priv);
849
850 /* Wake-up command waiters which can't sleep in
851 * lbs_prepare_and_send_command
852 */
853 if (!list_empty(&priv->cmdpendingq))
854 wake_up_all(&priv->cmd_pending);
855
856 spin_lock_irq(&priv->driver_lock);
857 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
858 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
859 priv->tx_pending_buf,
860 priv->tx_pending_len);
861 if (ret) {
862 lbs_deb_tx("host_to_card failed %d\n", ret);
863 priv->dnld_sent = DNLD_RES_RECEIVED;
864 }
865 priv->tx_pending_len = 0;
866 if (!priv->currenttxskb) {
867 /* We can wake the queues immediately if we aren't
868 waiting for TX feedback */
869 if (priv->connect_status == LBS_CONNECTED)
870 netif_wake_queue(priv->dev);
871 if (priv->mesh_dev &&
872 priv->mesh_connect_status == LBS_CONNECTED)
873 netif_wake_queue(priv->mesh_dev);
874 }
875 }
876 spin_unlock_irq(&priv->driver_lock);
877 }
878
879 del_timer(&priv->command_timer);
880 wake_up_all(&priv->cmd_pending);
881
882 lbs_deb_leave(LBS_DEB_THREAD);
883 return 0;
884 }
885
886 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
887 struct cmd_header *cmd)
888 {
889 lbs_deb_enter(LBS_DEB_FW);
890
891 netif_device_detach(priv->dev);
892 if (priv->mesh_dev)
893 netif_device_detach(priv->mesh_dev);
894
895 priv->fw_ready = 0;
896 lbs_deb_leave(LBS_DEB_FW);
897 return 0;
898 }
899
900 int lbs_suspend(struct lbs_private *priv)
901 {
902 struct cmd_header cmd;
903 int ret;
904
905 lbs_deb_enter(LBS_DEB_FW);
906
907 if (priv->wol_criteria == 0xffffffff) {
908 lbs_pr_info("Suspend attempt without configuring wake params!\n");
909 return -EINVAL;
910 }
911
912 memset(&cmd, 0, sizeof(cmd));
913
914 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
915 sizeof(cmd), lbs_suspend_callback, 0);
916 if (ret)
917 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
918
919 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
920 return ret;
921 }
922 EXPORT_SYMBOL_GPL(lbs_suspend);
923
924 void lbs_resume(struct lbs_private *priv)
925 {
926 lbs_deb_enter(LBS_DEB_FW);
927
928 priv->fw_ready = 1;
929
930 /* Firmware doesn't seem to give us RX packets any more
931 until we send it some command. Might as well update */
932 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
933 0, 0, NULL);
934
935 netif_device_attach(priv->dev);
936 if (priv->mesh_dev)
937 netif_device_attach(priv->mesh_dev);
938
939 lbs_deb_leave(LBS_DEB_FW);
940 }
941 EXPORT_SYMBOL_GPL(lbs_resume);
942
943 /**
944 * @brief This function downloads firmware image, gets
945 * HW spec from firmware and set basic parameters to
946 * firmware.
947 *
948 * @param priv A pointer to struct lbs_private structure
949 * @return 0 or -1
950 */
951 static int lbs_setup_firmware(struct lbs_private *priv)
952 {
953 int ret = -1;
954
955 lbs_deb_enter(LBS_DEB_FW);
956
957 /*
958 * Read MAC address from HW
959 */
960 memset(priv->current_addr, 0xff, ETH_ALEN);
961 ret = lbs_update_hw_spec(priv);
962 if (ret)
963 goto done;
964
965 lbs_set_mac_control(priv);
966 done:
967 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
968 return ret;
969 }
970
971 /**
972 * This function handles the timeout of command sending.
973 * It will re-send the same command again.
974 */
975 static void command_timer_fn(unsigned long data)
976 {
977 struct lbs_private *priv = (struct lbs_private *)data;
978 unsigned long flags;
979
980 lbs_deb_enter(LBS_DEB_CMD);
981 spin_lock_irqsave(&priv->driver_lock, flags);
982
983 if (!priv->cur_cmd) {
984 lbs_pr_info("Command timer expired; no pending command\n");
985 goto out;
986 }
987
988 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
989
990 priv->cmd_timed_out = 1;
991 wake_up_interruptible(&priv->waitq);
992 out:
993 spin_unlock_irqrestore(&priv->driver_lock, flags);
994 lbs_deb_leave(LBS_DEB_CMD);
995 }
996
997 static void lbs_sync_channel_worker(struct work_struct *work)
998 {
999 struct lbs_private *priv = container_of(work, struct lbs_private,
1000 sync_channel);
1001
1002 lbs_deb_enter(LBS_DEB_MAIN);
1003 if (lbs_update_channel(priv))
1004 lbs_pr_info("Channel synchronization failed.");
1005 lbs_deb_leave(LBS_DEB_MAIN);
1006 }
1007
1008
1009 static int lbs_init_adapter(struct lbs_private *priv)
1010 {
1011 size_t bufsize;
1012 int i, ret = 0;
1013
1014 lbs_deb_enter(LBS_DEB_MAIN);
1015
1016 /* Allocate buffer to store the BSSID list */
1017 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1018 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1019 if (!priv->networks) {
1020 lbs_pr_err("Out of memory allocating beacons\n");
1021 ret = -1;
1022 goto out;
1023 }
1024
1025 /* Initialize scan result lists */
1026 INIT_LIST_HEAD(&priv->network_free_list);
1027 INIT_LIST_HEAD(&priv->network_list);
1028 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1029 list_add_tail(&priv->networks[i].list,
1030 &priv->network_free_list);
1031 }
1032
1033 memset(priv->current_addr, 0xff, ETH_ALEN);
1034
1035 priv->connect_status = LBS_DISCONNECTED;
1036 priv->mesh_connect_status = LBS_DISCONNECTED;
1037 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1038 priv->mode = IW_MODE_INFRA;
1039 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1040 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1041 priv->radioon = RADIO_ON;
1042 priv->auto_rate = 1;
1043 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1044 priv->psmode = LBS802_11POWERMODECAM;
1045 priv->psstate = PS_STATE_FULL_POWER;
1046
1047 mutex_init(&priv->lock);
1048
1049 setup_timer(&priv->command_timer, command_timer_fn,
1050 (unsigned long)priv);
1051
1052 INIT_LIST_HEAD(&priv->cmdfreeq);
1053 INIT_LIST_HEAD(&priv->cmdpendingq);
1054
1055 spin_lock_init(&priv->driver_lock);
1056 init_waitqueue_head(&priv->cmd_pending);
1057
1058 /* Allocate the command buffers */
1059 if (lbs_allocate_cmd_buffer(priv)) {
1060 lbs_pr_err("Out of memory allocating command buffers\n");
1061 ret = -ENOMEM;
1062 goto out;
1063 }
1064 priv->resp_idx = 0;
1065 priv->resp_len[0] = priv->resp_len[1] = 0;
1066
1067 /* Create the event FIFO */
1068 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1069 if (IS_ERR(priv->event_fifo)) {
1070 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1071 ret = -ENOMEM;
1072 goto out;
1073 }
1074
1075 out:
1076 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1077
1078 return ret;
1079 }
1080
1081 static void lbs_free_adapter(struct lbs_private *priv)
1082 {
1083 lbs_deb_enter(LBS_DEB_MAIN);
1084
1085 lbs_free_cmd_buffer(priv);
1086 if (priv->event_fifo)
1087 kfifo_free(priv->event_fifo);
1088 del_timer(&priv->command_timer);
1089 kfree(priv->networks);
1090 priv->networks = NULL;
1091
1092 lbs_deb_leave(LBS_DEB_MAIN);
1093 }
1094
1095 /**
1096 * @brief This function adds the card. it will probe the
1097 * card, allocate the lbs_priv and initialize the device.
1098 *
1099 * @param card A pointer to card
1100 * @return A pointer to struct lbs_private structure
1101 */
1102 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1103 {
1104 struct net_device *dev = NULL;
1105 struct lbs_private *priv = NULL;
1106
1107 lbs_deb_enter(LBS_DEB_MAIN);
1108
1109 /* Allocate an Ethernet device and register it */
1110 dev = alloc_etherdev(sizeof(struct lbs_private));
1111 if (!dev) {
1112 lbs_pr_err("init ethX device failed\n");
1113 goto done;
1114 }
1115 priv = dev->priv;
1116
1117 if (lbs_init_adapter(priv)) {
1118 lbs_pr_err("failed to initialize adapter structure.\n");
1119 goto err_init_adapter;
1120 }
1121
1122 priv->dev = dev;
1123 priv->card = card;
1124 priv->mesh_open = 0;
1125 priv->infra_open = 0;
1126
1127 /* Setup the OS Interface to our functions */
1128 dev->open = lbs_dev_open;
1129 dev->hard_start_xmit = lbs_hard_start_xmit;
1130 dev->stop = lbs_eth_stop;
1131 dev->set_mac_address = lbs_set_mac_address;
1132 dev->tx_timeout = lbs_tx_timeout;
1133 dev->get_stats = lbs_get_stats;
1134 dev->watchdog_timeo = 5 * HZ;
1135 dev->ethtool_ops = &lbs_ethtool_ops;
1136 #ifdef WIRELESS_EXT
1137 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1138 #endif
1139 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1140 dev->set_multicast_list = lbs_set_multicast_list;
1141
1142 SET_NETDEV_DEV(dev, dmdev);
1143
1144 priv->rtap_net_dev = NULL;
1145
1146 lbs_deb_thread("Starting main thread...\n");
1147 init_waitqueue_head(&priv->waitq);
1148 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1149 if (IS_ERR(priv->main_thread)) {
1150 lbs_deb_thread("Error creating main thread.\n");
1151 goto err_init_adapter;
1152 }
1153
1154 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1155 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1156 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1157 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1158 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1159
1160 sprintf(priv->mesh_ssid, "mesh");
1161 priv->mesh_ssid_len = 4;
1162
1163 priv->wol_criteria = 0xffffffff;
1164 priv->wol_gpio = 0xff;
1165
1166 goto done;
1167
1168 err_init_adapter:
1169 lbs_free_adapter(priv);
1170 free_netdev(dev);
1171 priv = NULL;
1172
1173 done:
1174 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1175 return priv;
1176 }
1177 EXPORT_SYMBOL_GPL(lbs_add_card);
1178
1179
1180 void lbs_remove_card(struct lbs_private *priv)
1181 {
1182 struct net_device *dev = priv->dev;
1183 union iwreq_data wrqu;
1184
1185 lbs_deb_enter(LBS_DEB_MAIN);
1186
1187 lbs_remove_mesh(priv);
1188 lbs_remove_rtap(priv);
1189
1190 dev = priv->dev;
1191
1192 cancel_delayed_work_sync(&priv->scan_work);
1193 cancel_delayed_work_sync(&priv->assoc_work);
1194 cancel_work_sync(&priv->mcast_work);
1195 destroy_workqueue(priv->work_thread);
1196
1197 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1198 priv->psmode = LBS802_11POWERMODECAM;
1199 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1200 }
1201
1202 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1203 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1204 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1205
1206 /* Stop the thread servicing the interrupts */
1207 priv->surpriseremoved = 1;
1208 kthread_stop(priv->main_thread);
1209
1210 lbs_free_adapter(priv);
1211
1212 priv->dev = NULL;
1213 free_netdev(dev);
1214
1215 lbs_deb_leave(LBS_DEB_MAIN);
1216 }
1217 EXPORT_SYMBOL_GPL(lbs_remove_card);
1218
1219
1220 int lbs_start_card(struct lbs_private *priv)
1221 {
1222 struct net_device *dev = priv->dev;
1223 int ret = -1;
1224
1225 lbs_deb_enter(LBS_DEB_MAIN);
1226
1227 /* poke the firmware */
1228 ret = lbs_setup_firmware(priv);
1229 if (ret)
1230 goto done;
1231
1232 /* init 802.11d */
1233 lbs_init_11d(priv);
1234
1235 if (register_netdev(dev)) {
1236 lbs_pr_err("cannot register ethX device\n");
1237 goto done;
1238 }
1239 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1240 lbs_pr_err("cannot register lbs_rtap attribute\n");
1241
1242 lbs_update_channel(priv);
1243
1244 /* 5.0.16p0 is known to NOT support any mesh */
1245 if (priv->fwrelease > 0x05001000) {
1246 /* Enable mesh, if supported, and work out which TLV it uses.
1247 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1248 0x100 + 37 is the official value used in 5.110.21.pXX
1249 but we check them in that order because 20.pXX doesn't
1250 give an error -- it just silently fails. */
1251
1252 /* 5.110.20.pXX firmware will fail the command if the channel
1253 doesn't match the existing channel. But only if the TLV
1254 is correct. If the channel is wrong, _BOTH_ versions will
1255 give an error to 0x100+291, and allow 0x100+37 to succeed.
1256 It's just that 5.110.20.pXX will not have done anything
1257 useful */
1258
1259 priv->mesh_tlv = 0x100 + 291;
1260 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1261 priv->mesh_tlv = 0x100 + 37;
1262 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1263 priv->mesh_tlv = 0;
1264 }
1265 if (priv->mesh_tlv) {
1266 lbs_add_mesh(priv);
1267
1268 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1269 lbs_pr_err("cannot register lbs_mesh attribute\n");
1270 }
1271 }
1272
1273 lbs_debugfs_init_one(priv, dev);
1274
1275 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1276
1277 ret = 0;
1278
1279 done:
1280 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1281 return ret;
1282 }
1283 EXPORT_SYMBOL_GPL(lbs_start_card);
1284
1285
1286 void lbs_stop_card(struct lbs_private *priv)
1287 {
1288 struct net_device *dev = priv->dev;
1289 struct cmd_ctrl_node *cmdnode;
1290 unsigned long flags;
1291
1292 lbs_deb_enter(LBS_DEB_MAIN);
1293
1294 if (!priv)
1295 goto out;
1296
1297 netif_stop_queue(priv->dev);
1298 netif_carrier_off(priv->dev);
1299
1300 lbs_debugfs_remove_one(priv);
1301 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1302 if (priv->mesh_tlv)
1303 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1304
1305 /* Flush pending command nodes */
1306 del_timer_sync(&priv->command_timer);
1307 spin_lock_irqsave(&priv->driver_lock, flags);
1308 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1309 cmdnode->result = -ENOENT;
1310 cmdnode->cmdwaitqwoken = 1;
1311 wake_up_interruptible(&cmdnode->cmdwait_q);
1312 }
1313 spin_unlock_irqrestore(&priv->driver_lock, flags);
1314
1315 unregister_netdev(dev);
1316
1317 out:
1318 lbs_deb_leave(LBS_DEB_MAIN);
1319 }
1320 EXPORT_SYMBOL_GPL(lbs_stop_card);
1321
1322
1323 /**
1324 * @brief This function adds mshX interface
1325 *
1326 * @param priv A pointer to the struct lbs_private structure
1327 * @return 0 if successful, -X otherwise
1328 */
1329 static int lbs_add_mesh(struct lbs_private *priv)
1330 {
1331 struct net_device *mesh_dev = NULL;
1332 int ret = 0;
1333
1334 lbs_deb_enter(LBS_DEB_MESH);
1335
1336 /* Allocate a virtual mesh device */
1337 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1338 lbs_deb_mesh("init mshX device failed\n");
1339 ret = -ENOMEM;
1340 goto done;
1341 }
1342 mesh_dev->priv = priv;
1343 priv->mesh_dev = mesh_dev;
1344
1345 mesh_dev->open = lbs_dev_open;
1346 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1347 mesh_dev->stop = lbs_mesh_stop;
1348 mesh_dev->get_stats = lbs_get_stats;
1349 mesh_dev->set_mac_address = lbs_set_mac_address;
1350 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1351 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1352 sizeof(priv->dev->dev_addr));
1353
1354 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1355
1356 #ifdef WIRELESS_EXT
1357 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1358 #endif
1359 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1360 mesh_dev->set_multicast_list = lbs_set_multicast_list;
1361 /* Register virtual mesh interface */
1362 ret = register_netdev(mesh_dev);
1363 if (ret) {
1364 lbs_pr_err("cannot register mshX virtual interface\n");
1365 goto err_free;
1366 }
1367
1368 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1369 if (ret)
1370 goto err_unregister;
1371
1372 /* Everything successful */
1373 ret = 0;
1374 goto done;
1375
1376 err_unregister:
1377 unregister_netdev(mesh_dev);
1378
1379 err_free:
1380 free_netdev(mesh_dev);
1381
1382 done:
1383 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1384 return ret;
1385 }
1386
1387 static void lbs_remove_mesh(struct lbs_private *priv)
1388 {
1389 struct net_device *mesh_dev;
1390
1391
1392 mesh_dev = priv->mesh_dev;
1393 if (!mesh_dev)
1394 return;
1395
1396 lbs_deb_enter(LBS_DEB_MESH);
1397 netif_stop_queue(mesh_dev);
1398 netif_carrier_off(priv->mesh_dev);
1399 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1400 unregister_netdev(mesh_dev);
1401 priv->mesh_dev = NULL;
1402 free_netdev(mesh_dev);
1403 lbs_deb_leave(LBS_DEB_MESH);
1404 }
1405
1406 /**
1407 * @brief This function finds the CFP in
1408 * region_cfp_table based on region and band parameter.
1409 *
1410 * @param region The region code
1411 * @param band The band
1412 * @param cfp_no A pointer to CFP number
1413 * @return A pointer to CFP
1414 */
1415 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1416 {
1417 int i, end;
1418
1419 lbs_deb_enter(LBS_DEB_MAIN);
1420
1421 end = ARRAY_SIZE(region_cfp_table);
1422
1423 for (i = 0; i < end ; i++) {
1424 lbs_deb_main("region_cfp_table[i].region=%d\n",
1425 region_cfp_table[i].region);
1426 if (region_cfp_table[i].region == region) {
1427 *cfp_no = region_cfp_table[i].cfp_no_BG;
1428 lbs_deb_leave(LBS_DEB_MAIN);
1429 return region_cfp_table[i].cfp_BG;
1430 }
1431 }
1432
1433 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1434 return NULL;
1435 }
1436
1437 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1438 {
1439 int ret = 0;
1440 int i = 0;
1441
1442 struct chan_freq_power *cfp;
1443 int cfp_no;
1444
1445 lbs_deb_enter(LBS_DEB_MAIN);
1446
1447 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1448
1449 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1450 if (cfp != NULL) {
1451 priv->region_channel[i].nrcfp = cfp_no;
1452 priv->region_channel[i].CFP = cfp;
1453 } else {
1454 lbs_deb_main("wrong region code %#x in band B/G\n",
1455 region);
1456 ret = -1;
1457 goto out;
1458 }
1459 priv->region_channel[i].valid = 1;
1460 priv->region_channel[i].region = region;
1461 priv->region_channel[i].band = band;
1462 i++;
1463 out:
1464 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1465 return ret;
1466 }
1467
1468 void lbs_queue_event(struct lbs_private *priv, u32 event)
1469 {
1470 unsigned long flags;
1471
1472 lbs_deb_enter(LBS_DEB_THREAD);
1473 spin_lock_irqsave(&priv->driver_lock, flags);
1474
1475 if (priv->psstate == PS_STATE_SLEEP)
1476 priv->psstate = PS_STATE_AWAKE;
1477
1478 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1479
1480 wake_up_interruptible(&priv->waitq);
1481
1482 spin_unlock_irqrestore(&priv->driver_lock, flags);
1483 lbs_deb_leave(LBS_DEB_THREAD);
1484 }
1485 EXPORT_SYMBOL_GPL(lbs_queue_event);
1486
1487 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1488 {
1489 lbs_deb_enter(LBS_DEB_THREAD);
1490
1491 if (priv->psstate == PS_STATE_SLEEP)
1492 priv->psstate = PS_STATE_AWAKE;
1493
1494 /* Swap buffers by flipping the response index */
1495 BUG_ON(resp_idx > 1);
1496 priv->resp_idx = resp_idx;
1497
1498 wake_up_interruptible(&priv->waitq);
1499
1500 lbs_deb_leave(LBS_DEB_THREAD);
1501 }
1502 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1503
1504 static int __init lbs_init_module(void)
1505 {
1506 lbs_deb_enter(LBS_DEB_MAIN);
1507 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1508 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1509 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1510 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1511 lbs_debugfs_init();
1512 lbs_deb_leave(LBS_DEB_MAIN);
1513 return 0;
1514 }
1515
1516 static void __exit lbs_exit_module(void)
1517 {
1518 lbs_deb_enter(LBS_DEB_MAIN);
1519 lbs_debugfs_remove();
1520 lbs_deb_leave(LBS_DEB_MAIN);
1521 }
1522
1523 /*
1524 * rtap interface support fuctions
1525 */
1526
1527 static int lbs_rtap_open(struct net_device *dev)
1528 {
1529 /* Yes, _stop_ the queue. Because we don't support injection */
1530 lbs_deb_enter(LBS_DEB_MAIN);
1531 netif_carrier_off(dev);
1532 netif_stop_queue(dev);
1533 lbs_deb_leave(LBS_DEB_LEAVE);
1534 return 0;
1535 }
1536
1537 static int lbs_rtap_stop(struct net_device *dev)
1538 {
1539 lbs_deb_enter(LBS_DEB_MAIN);
1540 lbs_deb_leave(LBS_DEB_MAIN);
1541 return 0;
1542 }
1543
1544 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1545 {
1546 netif_stop_queue(dev);
1547 return NETDEV_TX_BUSY;
1548 }
1549
1550 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1551 {
1552 struct lbs_private *priv = dev->priv;
1553 lbs_deb_enter(LBS_DEB_NET);
1554 return &priv->stats;
1555 }
1556
1557
1558 static void lbs_remove_rtap(struct lbs_private *priv)
1559 {
1560 lbs_deb_enter(LBS_DEB_MAIN);
1561 if (priv->rtap_net_dev == NULL)
1562 goto out;
1563 unregister_netdev(priv->rtap_net_dev);
1564 free_netdev(priv->rtap_net_dev);
1565 priv->rtap_net_dev = NULL;
1566 out:
1567 lbs_deb_leave(LBS_DEB_MAIN);
1568 }
1569
1570 static int lbs_add_rtap(struct lbs_private *priv)
1571 {
1572 int ret = 0;
1573 struct net_device *rtap_dev;
1574
1575 lbs_deb_enter(LBS_DEB_MAIN);
1576 if (priv->rtap_net_dev) {
1577 ret = -EPERM;
1578 goto out;
1579 }
1580
1581 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1582 if (rtap_dev == NULL) {
1583 ret = -ENOMEM;
1584 goto out;
1585 }
1586
1587 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1588 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1589 rtap_dev->open = lbs_rtap_open;
1590 rtap_dev->stop = lbs_rtap_stop;
1591 rtap_dev->get_stats = lbs_rtap_get_stats;
1592 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1593 rtap_dev->priv = priv;
1594
1595 ret = register_netdev(rtap_dev);
1596 if (ret) {
1597 free_netdev(rtap_dev);
1598 goto out;
1599 }
1600 priv->rtap_net_dev = rtap_dev;
1601
1602 out:
1603 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1604 return ret;
1605 }
1606
1607 #ifndef CONFIG_IEEE80211
1608 const char *escape_essid(const char *essid, u8 essid_len)
1609 {
1610 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1611 const char *s = essid;
1612 char *d = escaped;
1613
1614 if (ieee80211_is_empty_essid(essid, essid_len)) {
1615 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1616 return escaped;
1617 }
1618
1619 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1620 while (essid_len--) {
1621 if (*s == '\0') {
1622 *d++ = '\\';
1623 *d++ = '0';
1624 s++;
1625 } else {
1626 *d++ = *s++;
1627 }
1628 }
1629 *d = '\0';
1630 return escaped;
1631 }
1632 #endif
1633
1634 module_init(lbs_init_module);
1635 module_exit(lbs_exit_module);
1636
1637 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1638 MODULE_AUTHOR("Marvell International Ltd.");
1639 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)