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ath9k: Replace ath9k_opmode with nl80211_iftype
[linux/fpc-iii.git] / drivers / net / wireless / libertas / main.c
blob241af7fe44bb6320485899f1ccca561f1a08ca60
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 #include <linux/ieee80211.h>
16 #include <net/iw_handler.h>
17
18 #include "host.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "wext.h"
22 #include "debugfs.h"
23 #include "scan.h"
24 #include "assoc.h"
25 #include "cmd.h"
26
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29 #ifdef DEBUG
30 "-dbg"
31 #endif
32 "";
33
34
35 /* Module parameters */
36 unsigned int lbs_debug;
37 EXPORT_SYMBOL_GPL(lbs_debug);
38 module_param_named(libertas_debug, lbs_debug, int, 0644);
39
40
41 /* This global structure is used to send the confirm_sleep command as
42 * fast as possible down to the firmware. */
43 struct cmd_confirm_sleep confirm_sleep;
44
45
46 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
47 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
48 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
49 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
50 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
51
52 /* Format { channel, frequency (MHz), maxtxpower } */
53 /* band: 'B/G', region: USA FCC/Canada IC */
54 static struct chan_freq_power channel_freq_power_US_BG[] = {
55 {1, 2412, LBS_TX_PWR_US_DEFAULT},
56 {2, 2417, LBS_TX_PWR_US_DEFAULT},
57 {3, 2422, LBS_TX_PWR_US_DEFAULT},
58 {4, 2427, LBS_TX_PWR_US_DEFAULT},
59 {5, 2432, LBS_TX_PWR_US_DEFAULT},
60 {6, 2437, LBS_TX_PWR_US_DEFAULT},
61 {7, 2442, LBS_TX_PWR_US_DEFAULT},
62 {8, 2447, LBS_TX_PWR_US_DEFAULT},
63 {9, 2452, LBS_TX_PWR_US_DEFAULT},
64 {10, 2457, LBS_TX_PWR_US_DEFAULT},
65 {11, 2462, LBS_TX_PWR_US_DEFAULT}
66 };
67
68 /* band: 'B/G', region: Europe ETSI */
69 static struct chan_freq_power channel_freq_power_EU_BG[] = {
70 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
71 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
72 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
73 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
74 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
75 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
76 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
77 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
78 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
79 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
80 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
81 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
82 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
83 };
84
85 /* band: 'B/G', region: Spain */
86 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
87 {10, 2457, LBS_TX_PWR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_DEFAULT}
89 };
90
91 /* band: 'B/G', region: France */
92 static struct chan_freq_power channel_freq_power_FR_BG[] = {
93 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
94 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
95 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
96 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
97 };
98
99 /* band: 'B/G', region: Japan */
100 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
101 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
102 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
103 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
104 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
105 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
106 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
107 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
108 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
109 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
110 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
111 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
112 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
113 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
114 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
115 };
116
117 /**
118 * the structure for channel, frequency and power
119 */
120 struct region_cfp_table {
121 u8 region;
122 struct chan_freq_power *cfp_BG;
123 int cfp_no_BG;
124 };
125
126 /**
127 * the structure for the mapping between region and CFP
128 */
129 static struct region_cfp_table region_cfp_table[] = {
130 {0x10, /*US FCC */
131 channel_freq_power_US_BG,
132 ARRAY_SIZE(channel_freq_power_US_BG),
133 }
134 ,
135 {0x20, /*CANADA IC */
136 channel_freq_power_US_BG,
137 ARRAY_SIZE(channel_freq_power_US_BG),
138 }
139 ,
140 {0x30, /*EU*/ channel_freq_power_EU_BG,
141 ARRAY_SIZE(channel_freq_power_EU_BG),
142 }
143 ,
144 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
145 ARRAY_SIZE(channel_freq_power_SPN_BG),
146 }
147 ,
148 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
149 ARRAY_SIZE(channel_freq_power_FR_BG),
150 }
151 ,
152 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
153 ARRAY_SIZE(channel_freq_power_JPN_BG),
154 }
155 ,
156 /*Add new region here */
157 };
158
159 /**
160 * the table to keep region code
161 */
162 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
163 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
164
165 /**
166 * 802.11b/g supported bitrates (in 500Kb/s units)
167 */
168 u8 lbs_bg_rates[MAX_RATES] =
169 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
170 0x00, 0x00 };
171
172 /**
173 * FW rate table. FW refers to rates by their index in this table, not by the
174 * rate value itself. Values of 0x00 are
175 * reserved positions.
176 */
177 static u8 fw_data_rates[MAX_RATES] =
178 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
179 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
180 };
181
182 /**
183 * @brief use index to get the data rate
184 *
185 * @param idx The index of data rate
186 * @return data rate or 0
187 */
188 u32 lbs_fw_index_to_data_rate(u8 idx)
189 {
190 if (idx >= sizeof(fw_data_rates))
191 idx = 0;
192 return fw_data_rates[idx];
193 }
194
195 /**
196 * @brief use rate to get the index
197 *
198 * @param rate data rate
199 * @return index or 0
200 */
201 u8 lbs_data_rate_to_fw_index(u32 rate)
202 {
203 u8 i;
204
205 if (!rate)
206 return 0;
207
208 for (i = 0; i < sizeof(fw_data_rates); i++) {
209 if (rate == fw_data_rates[i])
210 return i;
211 }
212 return 0;
213 }
214
215 /**
216 * Attributes exported through sysfs
217 */
218
219 /**
220 * @brief Get function for sysfs attribute anycast_mask
221 */
222 static ssize_t lbs_anycast_get(struct device *dev,
223 struct device_attribute *attr, char * buf)
224 {
225 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
226 struct cmd_ds_mesh_access mesh_access;
227 int ret;
228
229 memset(&mesh_access, 0, sizeof(mesh_access));
230
231 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
232 if (ret)
233 return ret;
234
235 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
236 }
237
238 /**
239 * @brief Set function for sysfs attribute anycast_mask
240 */
241 static ssize_t lbs_anycast_set(struct device *dev,
242 struct device_attribute *attr, const char * buf, size_t count)
243 {
244 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
245 struct cmd_ds_mesh_access mesh_access;
246 uint32_t datum;
247 int ret;
248
249 memset(&mesh_access, 0, sizeof(mesh_access));
250 sscanf(buf, "%x", &datum);
251 mesh_access.data[0] = cpu_to_le32(datum);
252
253 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
254 if (ret)
255 return ret;
256
257 return strlen(buf);
258 }
259
260 static int lbs_add_rtap(struct lbs_private *priv);
261 static void lbs_remove_rtap(struct lbs_private *priv);
262 static int lbs_add_mesh(struct lbs_private *priv);
263 static void lbs_remove_mesh(struct lbs_private *priv);
264
265
266 /**
267 * Get function for sysfs attribute rtap
268 */
269 static ssize_t lbs_rtap_get(struct device *dev,
270 struct device_attribute *attr, char * buf)
271 {
272 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
273 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
274 }
275
276 /**
277 * Set function for sysfs attribute rtap
278 */
279 static ssize_t lbs_rtap_set(struct device *dev,
280 struct device_attribute *attr, const char * buf, size_t count)
281 {
282 int monitor_mode;
283 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
284
285 sscanf(buf, "%x", &monitor_mode);
286 if (monitor_mode) {
287 if (priv->monitormode == monitor_mode)
288 return strlen(buf);
289 if (!priv->monitormode) {
290 if (priv->infra_open || priv->mesh_open)
291 return -EBUSY;
292 if (priv->mode == IW_MODE_INFRA)
293 lbs_cmd_80211_deauthenticate(priv,
294 priv->curbssparams.bssid,
295 WLAN_REASON_DEAUTH_LEAVING);
296 else if (priv->mode == IW_MODE_ADHOC)
297 lbs_adhoc_stop(priv);
298 lbs_add_rtap(priv);
299 }
300 priv->monitormode = monitor_mode;
301 } else {
302 if (!priv->monitormode)
303 return strlen(buf);
304 priv->monitormode = 0;
305 lbs_remove_rtap(priv);
306
307 if (priv->currenttxskb) {
308 dev_kfree_skb_any(priv->currenttxskb);
309 priv->currenttxskb = NULL;
310 }
311
312 /* Wake queues, command thread, etc. */
313 lbs_host_to_card_done(priv);
314 }
315
316 lbs_prepare_and_send_command(priv,
317 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
318 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
319 return strlen(buf);
320 }
321
322 /**
323 * lbs_rtap attribute to be exported per ethX interface
324 * through sysfs (/sys/class/net/ethX/lbs_rtap)
325 */
326 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
327
328 /**
329 * Get function for sysfs attribute mesh
330 */
331 static ssize_t lbs_mesh_get(struct device *dev,
332 struct device_attribute *attr, char * buf)
333 {
334 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
335 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
336 }
337
338 /**
339 * Set function for sysfs attribute mesh
340 */
341 static ssize_t lbs_mesh_set(struct device *dev,
342 struct device_attribute *attr, const char * buf, size_t count)
343 {
344 struct lbs_private *priv = netdev_priv(to_net_dev(dev));
345 int enable;
346 int ret, action = CMD_ACT_MESH_CONFIG_STOP;
347
348 sscanf(buf, "%x", &enable);
349 enable = !!enable;
350 if (enable == !!priv->mesh_dev)
351 return count;
352 if (enable)
353 action = CMD_ACT_MESH_CONFIG_START;
354 ret = lbs_mesh_config(priv, action, 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 = netdev_priv(dev) ;
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 = dev->ml_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 = netdev_priv(dev);
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 = netdev_priv(dev);
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 = netdev_priv(dev);
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 = netdev_priv(dev);
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
591 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
592 return nr_addrs;
593
594 netif_addr_lock_bh(dev);
595 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
596 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
597 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
598 mc_list->dmi_addr);
599 continue;
600 }
601
602 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
603 break;
604 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
605 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
606 mc_list->dmi_addr);
607 i++;
608 }
609 netif_addr_unlock_bh(dev);
610 if (mc_list)
611 return -EOVERFLOW;
612
613 return i;
614 }
615
616 static void lbs_set_mcast_worker(struct work_struct *work)
617 {
618 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
619 struct cmd_ds_mac_multicast_adr mcast_cmd;
620 int dev_flags;
621 int nr_addrs;
622 int old_mac_control = priv->mac_control;
623
624 lbs_deb_enter(LBS_DEB_NET);
625
626 dev_flags = priv->dev->flags;
627 if (priv->mesh_dev)
628 dev_flags |= priv->mesh_dev->flags;
629
630 if (dev_flags & IFF_PROMISC) {
631 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
632 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
633 CMD_ACT_MAC_MULTICAST_ENABLE);
634 goto out_set_mac_control;
635 } else if (dev_flags & IFF_ALLMULTI) {
636 do_allmulti:
637 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
638 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
639 CMD_ACT_MAC_MULTICAST_ENABLE);
640 goto out_set_mac_control;
641 }
642
643 /* Once for priv->dev, again for priv->mesh_dev if it exists */
644 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
645 if (nr_addrs >= 0 && priv->mesh_dev)
646 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
647 if (nr_addrs < 0)
648 goto do_allmulti;
649
650 if (nr_addrs) {
651 int size = offsetof(struct cmd_ds_mac_multicast_adr,
652 maclist[6*nr_addrs]);
653
654 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
655 mcast_cmd.hdr.size = cpu_to_le16(size);
656 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
657
658 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
659
660 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
661 } else
662 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
663
664 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
665 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
666 out_set_mac_control:
667 if (priv->mac_control != old_mac_control)
668 lbs_set_mac_control(priv);
669
670 lbs_deb_leave(LBS_DEB_NET);
671 }
672
673 static void lbs_set_multicast_list(struct net_device *dev)
674 {
675 struct lbs_private *priv = netdev_priv(dev);
676
677 schedule_work(&priv->mcast_work);
678 }
679
680 /**
681 * @brief This function handles the major jobs in the LBS driver.
682 * It handles all events generated by firmware, RX data received
683 * from firmware and TX data sent from kernel.
684 *
685 * @param data A pointer to lbs_thread structure
686 * @return 0
687 */
688 static int lbs_thread(void *data)
689 {
690 struct net_device *dev = data;
691 struct lbs_private *priv = netdev_priv(dev);
692 wait_queue_t wait;
693
694 lbs_deb_enter(LBS_DEB_THREAD);
695
696 init_waitqueue_entry(&wait, current);
697
698 for (;;) {
699 int shouldsleep;
700 u8 resp_idx;
701
702 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
703 priv->currenttxskb, priv->dnld_sent);
704
705 add_wait_queue(&priv->waitq, &wait);
706 set_current_state(TASK_INTERRUPTIBLE);
707 spin_lock_irq(&priv->driver_lock);
708
709 if (kthread_should_stop())
710 shouldsleep = 0; /* Bye */
711 else if (priv->surpriseremoved)
712 shouldsleep = 1; /* We need to wait until we're _told_ to die */
713 else if (priv->psstate == PS_STATE_SLEEP)
714 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
715 else if (priv->cmd_timed_out)
716 shouldsleep = 0; /* Command timed out. Recover */
717 else if (!priv->fw_ready)
718 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
719 else if (priv->dnld_sent)
720 shouldsleep = 1; /* Something is en route to the device already */
721 else if (priv->tx_pending_len > 0)
722 shouldsleep = 0; /* We've a packet to send */
723 else if (priv->resp_len[priv->resp_idx])
724 shouldsleep = 0; /* We have a command response */
725 else if (priv->cur_cmd)
726 shouldsleep = 1; /* Can't send a command; one already running */
727 else if (!list_empty(&priv->cmdpendingq))
728 shouldsleep = 0; /* We have a command to send */
729 else if (__kfifo_len(priv->event_fifo))
730 shouldsleep = 0; /* We have an event to process */
731 else
732 shouldsleep = 1; /* No command */
733
734 if (shouldsleep) {
735 lbs_deb_thread("sleeping, connect_status %d, "
736 "psmode %d, psstate %d\n",
737 priv->connect_status,
738 priv->psmode, priv->psstate);
739 spin_unlock_irq(&priv->driver_lock);
740 schedule();
741 } else
742 spin_unlock_irq(&priv->driver_lock);
743
744 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
745 priv->currenttxskb, priv->dnld_sent);
746
747 set_current_state(TASK_RUNNING);
748 remove_wait_queue(&priv->waitq, &wait);
749
750 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
751 priv->currenttxskb, priv->dnld_sent);
752
753 if (kthread_should_stop()) {
754 lbs_deb_thread("break from main thread\n");
755 break;
756 }
757
758 if (priv->surpriseremoved) {
759 lbs_deb_thread("adapter removed; waiting to die...\n");
760 continue;
761 }
762
763 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
764 priv->currenttxskb, priv->dnld_sent);
765
766 /* Process any pending command response */
767 spin_lock_irq(&priv->driver_lock);
768 resp_idx = priv->resp_idx;
769 if (priv->resp_len[resp_idx]) {
770 spin_unlock_irq(&priv->driver_lock);
771 lbs_process_command_response(priv,
772 priv->resp_buf[resp_idx],
773 priv->resp_len[resp_idx]);
774 spin_lock_irq(&priv->driver_lock);
775 priv->resp_len[resp_idx] = 0;
776 }
777 spin_unlock_irq(&priv->driver_lock);
778
779 /* command timeout stuff */
780 if (priv->cmd_timed_out && priv->cur_cmd) {
781 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
782
783 if (++priv->nr_retries > 3) {
784 lbs_pr_info("Excessive timeouts submitting "
785 "command 0x%04x\n",
786 le16_to_cpu(cmdnode->cmdbuf->command));
787 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
788 priv->nr_retries = 0;
789 if (priv->reset_card)
790 priv->reset_card(priv);
791 } else {
792 priv->cur_cmd = NULL;
793 priv->dnld_sent = DNLD_RES_RECEIVED;
794 lbs_pr_info("requeueing command 0x%04x due "
795 "to timeout (#%d)\n",
796 le16_to_cpu(cmdnode->cmdbuf->command),
797 priv->nr_retries);
798
799 /* Stick it back at the _top_ of the pending queue
800 for immediate resubmission */
801 list_add(&cmdnode->list, &priv->cmdpendingq);
802 }
803 }
804 priv->cmd_timed_out = 0;
805
806 /* Process hardware events, e.g. card removed, link lost */
807 spin_lock_irq(&priv->driver_lock);
808 while (__kfifo_len(priv->event_fifo)) {
809 u32 event;
810
811 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
812 sizeof(event));
813 spin_unlock_irq(&priv->driver_lock);
814 lbs_process_event(priv, event);
815 spin_lock_irq(&priv->driver_lock);
816 }
817 spin_unlock_irq(&priv->driver_lock);
818
819 if (!priv->fw_ready)
820 continue;
821
822 /* Check if we need to confirm Sleep Request received previously */
823 if (priv->psstate == PS_STATE_PRE_SLEEP &&
824 !priv->dnld_sent && !priv->cur_cmd) {
825 if (priv->connect_status == LBS_CONNECTED) {
826 lbs_deb_thread("pre-sleep, currenttxskb %p, "
827 "dnld_sent %d, cur_cmd %p\n",
828 priv->currenttxskb, priv->dnld_sent,
829 priv->cur_cmd);
830
831 lbs_ps_confirm_sleep(priv);
832 } else {
833 /* workaround for firmware sending
834 * deauth/linkloss event immediately
835 * after sleep request; remove this
836 * after firmware fixes it
837 */
838 priv->psstate = PS_STATE_AWAKE;
839 lbs_pr_alert("ignore PS_SleepConfirm in "
840 "non-connected state\n");
841 }
842 }
843
844 /* The PS state is changed during processing of Sleep Request
845 * event above
846 */
847 if ((priv->psstate == PS_STATE_SLEEP) ||
848 (priv->psstate == PS_STATE_PRE_SLEEP))
849 continue;
850
851 /* Execute the next command */
852 if (!priv->dnld_sent && !priv->cur_cmd)
853 lbs_execute_next_command(priv);
854
855 /* Wake-up command waiters which can't sleep in
856 * lbs_prepare_and_send_command
857 */
858 if (!list_empty(&priv->cmdpendingq))
859 wake_up_all(&priv->cmd_pending);
860
861 spin_lock_irq(&priv->driver_lock);
862 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
863 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
864 priv->tx_pending_buf,
865 priv->tx_pending_len);
866 if (ret) {
867 lbs_deb_tx("host_to_card failed %d\n", ret);
868 priv->dnld_sent = DNLD_RES_RECEIVED;
869 }
870 priv->tx_pending_len = 0;
871 if (!priv->currenttxskb) {
872 /* We can wake the queues immediately if we aren't
873 waiting for TX feedback */
874 if (priv->connect_status == LBS_CONNECTED)
875 netif_wake_queue(priv->dev);
876 if (priv->mesh_dev &&
877 priv->mesh_connect_status == LBS_CONNECTED)
878 netif_wake_queue(priv->mesh_dev);
879 }
880 }
881 spin_unlock_irq(&priv->driver_lock);
882 }
883
884 del_timer(&priv->command_timer);
885 wake_up_all(&priv->cmd_pending);
886
887 lbs_deb_leave(LBS_DEB_THREAD);
888 return 0;
889 }
890
891 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
892 struct cmd_header *cmd)
893 {
894 lbs_deb_enter(LBS_DEB_FW);
895
896 netif_device_detach(priv->dev);
897 if (priv->mesh_dev)
898 netif_device_detach(priv->mesh_dev);
899
900 priv->fw_ready = 0;
901 lbs_deb_leave(LBS_DEB_FW);
902 return 0;
903 }
904
905 int lbs_suspend(struct lbs_private *priv)
906 {
907 struct cmd_header cmd;
908 int ret;
909
910 lbs_deb_enter(LBS_DEB_FW);
911
912 if (priv->wol_criteria == 0xffffffff) {
913 lbs_pr_info("Suspend attempt without configuring wake params!\n");
914 return -EINVAL;
915 }
916
917 memset(&cmd, 0, sizeof(cmd));
918
919 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
920 sizeof(cmd), lbs_suspend_callback, 0);
921 if (ret)
922 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
923
924 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
925 return ret;
926 }
927 EXPORT_SYMBOL_GPL(lbs_suspend);
928
929 void lbs_resume(struct lbs_private *priv)
930 {
931 lbs_deb_enter(LBS_DEB_FW);
932
933 priv->fw_ready = 1;
934
935 /* Firmware doesn't seem to give us RX packets any more
936 until we send it some command. Might as well update */
937 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
938 0, 0, NULL);
939
940 netif_device_attach(priv->dev);
941 if (priv->mesh_dev)
942 netif_device_attach(priv->mesh_dev);
943
944 lbs_deb_leave(LBS_DEB_FW);
945 }
946 EXPORT_SYMBOL_GPL(lbs_resume);
947
948 /**
949 * @brief This function downloads firmware image, gets
950 * HW spec from firmware and set basic parameters to
951 * firmware.
952 *
953 * @param priv A pointer to struct lbs_private structure
954 * @return 0 or -1
955 */
956 static int lbs_setup_firmware(struct lbs_private *priv)
957 {
958 int ret = -1;
959 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
960
961 lbs_deb_enter(LBS_DEB_FW);
962
963 /* Read MAC address from firmware */
964 memset(priv->current_addr, 0xff, ETH_ALEN);
965 ret = lbs_update_hw_spec(priv);
966 if (ret)
967 goto done;
968
969 /* Read power levels if available */
970 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
971 if (ret == 0) {
972 priv->txpower_cur = curlevel;
973 priv->txpower_min = minlevel;
974 priv->txpower_max = maxlevel;
975 }
976
977 lbs_set_mac_control(priv);
978 done:
979 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
980 return ret;
981 }
982
983 /**
984 * This function handles the timeout of command sending.
985 * It will re-send the same command again.
986 */
987 static void command_timer_fn(unsigned long data)
988 {
989 struct lbs_private *priv = (struct lbs_private *)data;
990 unsigned long flags;
991
992 lbs_deb_enter(LBS_DEB_CMD);
993 spin_lock_irqsave(&priv->driver_lock, flags);
994
995 if (!priv->cur_cmd)
996 goto out;
997
998 lbs_pr_info("command 0x%04x timed out\n",
999 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
1000
1001 priv->cmd_timed_out = 1;
1002 wake_up_interruptible(&priv->waitq);
1003 out:
1004 spin_unlock_irqrestore(&priv->driver_lock, flags);
1005 lbs_deb_leave(LBS_DEB_CMD);
1006 }
1007
1008 static void lbs_sync_channel_worker(struct work_struct *work)
1009 {
1010 struct lbs_private *priv = container_of(work, struct lbs_private,
1011 sync_channel);
1012
1013 lbs_deb_enter(LBS_DEB_MAIN);
1014 if (lbs_update_channel(priv))
1015 lbs_pr_info("Channel synchronization failed.");
1016 lbs_deb_leave(LBS_DEB_MAIN);
1017 }
1018
1019
1020 static int lbs_init_adapter(struct lbs_private *priv)
1021 {
1022 size_t bufsize;
1023 int i, ret = 0;
1024
1025 lbs_deb_enter(LBS_DEB_MAIN);
1026
1027 /* Allocate buffer to store the BSSID list */
1028 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1029 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1030 if (!priv->networks) {
1031 lbs_pr_err("Out of memory allocating beacons\n");
1032 ret = -1;
1033 goto out;
1034 }
1035
1036 /* Initialize scan result lists */
1037 INIT_LIST_HEAD(&priv->network_free_list);
1038 INIT_LIST_HEAD(&priv->network_list);
1039 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1040 list_add_tail(&priv->networks[i].list,
1041 &priv->network_free_list);
1042 }
1043
1044 memset(priv->current_addr, 0xff, ETH_ALEN);
1045
1046 priv->connect_status = LBS_DISCONNECTED;
1047 priv->mesh_connect_status = LBS_DISCONNECTED;
1048 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1049 priv->mode = IW_MODE_INFRA;
1050 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1051 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1052 priv->radio_on = 1;
1053 priv->enablehwauto = 1;
1054 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1055 priv->psmode = LBS802_11POWERMODECAM;
1056 priv->psstate = PS_STATE_FULL_POWER;
1057
1058 mutex_init(&priv->lock);
1059
1060 setup_timer(&priv->command_timer, command_timer_fn,
1061 (unsigned long)priv);
1062
1063 INIT_LIST_HEAD(&priv->cmdfreeq);
1064 INIT_LIST_HEAD(&priv->cmdpendingq);
1065
1066 spin_lock_init(&priv->driver_lock);
1067 init_waitqueue_head(&priv->cmd_pending);
1068
1069 /* Allocate the command buffers */
1070 if (lbs_allocate_cmd_buffer(priv)) {
1071 lbs_pr_err("Out of memory allocating command buffers\n");
1072 ret = -ENOMEM;
1073 goto out;
1074 }
1075 priv->resp_idx = 0;
1076 priv->resp_len[0] = priv->resp_len[1] = 0;
1077
1078 /* Create the event FIFO */
1079 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1080 if (IS_ERR(priv->event_fifo)) {
1081 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1082 ret = -ENOMEM;
1083 goto out;
1084 }
1085
1086 out:
1087 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1088
1089 return ret;
1090 }
1091
1092 static void lbs_free_adapter(struct lbs_private *priv)
1093 {
1094 lbs_deb_enter(LBS_DEB_MAIN);
1095
1096 lbs_free_cmd_buffer(priv);
1097 if (priv->event_fifo)
1098 kfifo_free(priv->event_fifo);
1099 del_timer(&priv->command_timer);
1100 kfree(priv->networks);
1101 priv->networks = NULL;
1102
1103 lbs_deb_leave(LBS_DEB_MAIN);
1104 }
1105
1106 /**
1107 * @brief This function adds the card. it will probe the
1108 * card, allocate the lbs_priv and initialize the device.
1109 *
1110 * @param card A pointer to card
1111 * @return A pointer to struct lbs_private structure
1112 */
1113 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1114 {
1115 struct net_device *dev = NULL;
1116 struct lbs_private *priv = NULL;
1117
1118 lbs_deb_enter(LBS_DEB_MAIN);
1119
1120 /* Allocate an Ethernet device and register it */
1121 dev = alloc_etherdev(sizeof(struct lbs_private));
1122 if (!dev) {
1123 lbs_pr_err("init ethX device failed\n");
1124 goto done;
1125 }
1126 priv = netdev_priv(dev);
1127
1128 if (lbs_init_adapter(priv)) {
1129 lbs_pr_err("failed to initialize adapter structure.\n");
1130 goto err_init_adapter;
1131 }
1132
1133 priv->dev = dev;
1134 priv->card = card;
1135 priv->mesh_open = 0;
1136 priv->infra_open = 0;
1137
1138 /* Setup the OS Interface to our functions */
1139 dev->open = lbs_dev_open;
1140 dev->hard_start_xmit = lbs_hard_start_xmit;
1141 dev->stop = lbs_eth_stop;
1142 dev->set_mac_address = lbs_set_mac_address;
1143 dev->tx_timeout = lbs_tx_timeout;
1144 dev->get_stats = lbs_get_stats;
1145 dev->watchdog_timeo = 5 * HZ;
1146 dev->ethtool_ops = &lbs_ethtool_ops;
1147 #ifdef WIRELESS_EXT
1148 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1149 #endif
1150 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1151 dev->set_multicast_list = lbs_set_multicast_list;
1152
1153 SET_NETDEV_DEV(dev, dmdev);
1154
1155 priv->rtap_net_dev = NULL;
1156
1157 lbs_deb_thread("Starting main thread...\n");
1158 init_waitqueue_head(&priv->waitq);
1159 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1160 if (IS_ERR(priv->main_thread)) {
1161 lbs_deb_thread("Error creating main thread.\n");
1162 goto err_init_adapter;
1163 }
1164
1165 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1166 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1167 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1168 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1169 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1170
1171 sprintf(priv->mesh_ssid, "mesh");
1172 priv->mesh_ssid_len = 4;
1173
1174 priv->wol_criteria = 0xffffffff;
1175 priv->wol_gpio = 0xff;
1176
1177 goto done;
1178
1179 err_init_adapter:
1180 lbs_free_adapter(priv);
1181 free_netdev(dev);
1182 priv = NULL;
1183
1184 done:
1185 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1186 return priv;
1187 }
1188 EXPORT_SYMBOL_GPL(lbs_add_card);
1189
1190
1191 void lbs_remove_card(struct lbs_private *priv)
1192 {
1193 struct net_device *dev = priv->dev;
1194 union iwreq_data wrqu;
1195
1196 lbs_deb_enter(LBS_DEB_MAIN);
1197
1198 lbs_remove_mesh(priv);
1199 lbs_remove_rtap(priv);
1200
1201 dev = priv->dev;
1202
1203 cancel_delayed_work_sync(&priv->scan_work);
1204 cancel_delayed_work_sync(&priv->assoc_work);
1205 cancel_work_sync(&priv->mcast_work);
1206
1207 /* worker thread destruction blocks on the in-flight command which
1208 * should have been cleared already in lbs_stop_card().
1209 */
1210 lbs_deb_main("destroying worker thread\n");
1211 destroy_workqueue(priv->work_thread);
1212 lbs_deb_main("done destroying worker thread\n");
1213
1214 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1215 priv->psmode = LBS802_11POWERMODECAM;
1216 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1217 }
1218
1219 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1220 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1221 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1222
1223 /* Stop the thread servicing the interrupts */
1224 priv->surpriseremoved = 1;
1225 kthread_stop(priv->main_thread);
1226
1227 lbs_free_adapter(priv);
1228
1229 priv->dev = NULL;
1230 free_netdev(dev);
1231
1232 lbs_deb_leave(LBS_DEB_MAIN);
1233 }
1234 EXPORT_SYMBOL_GPL(lbs_remove_card);
1235
1236
1237 int lbs_start_card(struct lbs_private *priv)
1238 {
1239 struct net_device *dev = priv->dev;
1240 int ret = -1;
1241
1242 lbs_deb_enter(LBS_DEB_MAIN);
1243
1244 /* poke the firmware */
1245 ret = lbs_setup_firmware(priv);
1246 if (ret)
1247 goto done;
1248
1249 /* init 802.11d */
1250 lbs_init_11d(priv);
1251
1252 if (register_netdev(dev)) {
1253 lbs_pr_err("cannot register ethX device\n");
1254 goto done;
1255 }
1256
1257 lbs_update_channel(priv);
1258
1259 /* 5.0.16p0 is known to NOT support any mesh */
1260 if (priv->fwrelease > 0x05001000) {
1261 /* Enable mesh, if supported, and work out which TLV it uses.
1262 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1263 0x100 + 37 is the official value used in 5.110.21.pXX
1264 but we check them in that order because 20.pXX doesn't
1265 give an error -- it just silently fails. */
1266
1267 /* 5.110.20.pXX firmware will fail the command if the channel
1268 doesn't match the existing channel. But only if the TLV
1269 is correct. If the channel is wrong, _BOTH_ versions will
1270 give an error to 0x100+291, and allow 0x100+37 to succeed.
1271 It's just that 5.110.20.pXX will not have done anything
1272 useful */
1273
1274 priv->mesh_tlv = 0x100 + 291;
1275 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1276 priv->curbssparams.channel)) {
1277 priv->mesh_tlv = 0x100 + 37;
1278 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1279 priv->curbssparams.channel))
1280 priv->mesh_tlv = 0;
1281 }
1282 if (priv->mesh_tlv) {
1283 lbs_add_mesh(priv);
1284
1285 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1286 lbs_pr_err("cannot register lbs_mesh attribute\n");
1287
1288 /* While rtap isn't related to mesh, only mesh-enabled
1289 * firmware implements the rtap functionality via
1290 * CMD_802_11_MONITOR_MODE.
1291 */
1292 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1293 lbs_pr_err("cannot register lbs_rtap attribute\n");
1294 }
1295 }
1296
1297 lbs_debugfs_init_one(priv, dev);
1298
1299 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1300
1301 ret = 0;
1302
1303 done:
1304 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1305 return ret;
1306 }
1307 EXPORT_SYMBOL_GPL(lbs_start_card);
1308
1309
1310 void lbs_stop_card(struct lbs_private *priv)
1311 {
1312 struct net_device *dev = priv->dev;
1313 struct cmd_ctrl_node *cmdnode;
1314 unsigned long flags;
1315
1316 lbs_deb_enter(LBS_DEB_MAIN);
1317
1318 if (!priv)
1319 goto out;
1320
1321 netif_stop_queue(priv->dev);
1322 netif_carrier_off(priv->dev);
1323
1324 lbs_debugfs_remove_one(priv);
1325 if (priv->mesh_tlv) {
1326 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1327 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1328 }
1329
1330 /* Delete the timeout of the currently processing command */
1331 del_timer_sync(&priv->command_timer);
1332
1333 /* Flush pending command nodes */
1334 spin_lock_irqsave(&priv->driver_lock, flags);
1335 lbs_deb_main("clearing pending commands\n");
1336 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1337 cmdnode->result = -ENOENT;
1338 cmdnode->cmdwaitqwoken = 1;
1339 wake_up_interruptible(&cmdnode->cmdwait_q);
1340 }
1341
1342 /* Flush the command the card is currently processing */
1343 if (priv->cur_cmd) {
1344 lbs_deb_main("clearing current command\n");
1345 priv->cur_cmd->result = -ENOENT;
1346 priv->cur_cmd->cmdwaitqwoken = 1;
1347 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1348 }
1349 lbs_deb_main("done clearing commands\n");
1350 spin_unlock_irqrestore(&priv->driver_lock, flags);
1351
1352 unregister_netdev(dev);
1353
1354 out:
1355 lbs_deb_leave(LBS_DEB_MAIN);
1356 }
1357 EXPORT_SYMBOL_GPL(lbs_stop_card);
1358
1359
1360 /**
1361 * @brief This function adds mshX interface
1362 *
1363 * @param priv A pointer to the struct lbs_private structure
1364 * @return 0 if successful, -X otherwise
1365 */
1366 static int lbs_add_mesh(struct lbs_private *priv)
1367 {
1368 struct net_device *mesh_dev = NULL;
1369 int ret = 0;
1370
1371 lbs_deb_enter(LBS_DEB_MESH);
1372
1373 /* Allocate a virtual mesh device */
1374 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1375 lbs_deb_mesh("init mshX device failed\n");
1376 ret = -ENOMEM;
1377 goto done;
1378 }
1379 mesh_dev->ml_priv = priv;
1380 priv->mesh_dev = mesh_dev;
1381
1382 mesh_dev->open = lbs_dev_open;
1383 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1384 mesh_dev->stop = lbs_mesh_stop;
1385 mesh_dev->get_stats = lbs_get_stats;
1386 mesh_dev->set_mac_address = lbs_set_mac_address;
1387 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1388 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1389 sizeof(priv->dev->dev_addr));
1390
1391 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1392
1393 #ifdef WIRELESS_EXT
1394 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1395 #endif
1396 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1397 mesh_dev->set_multicast_list = lbs_set_multicast_list;
1398 /* Register virtual mesh interface */
1399 ret = register_netdev(mesh_dev);
1400 if (ret) {
1401 lbs_pr_err("cannot register mshX virtual interface\n");
1402 goto err_free;
1403 }
1404
1405 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1406 if (ret)
1407 goto err_unregister;
1408
1409 lbs_persist_config_init(mesh_dev);
1410
1411 /* Everything successful */
1412 ret = 0;
1413 goto done;
1414
1415 err_unregister:
1416 unregister_netdev(mesh_dev);
1417
1418 err_free:
1419 free_netdev(mesh_dev);
1420
1421 done:
1422 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1423 return ret;
1424 }
1425
1426 static void lbs_remove_mesh(struct lbs_private *priv)
1427 {
1428 struct net_device *mesh_dev;
1429
1430
1431 mesh_dev = priv->mesh_dev;
1432 if (!mesh_dev)
1433 return;
1434
1435 lbs_deb_enter(LBS_DEB_MESH);
1436 netif_stop_queue(mesh_dev);
1437 netif_carrier_off(mesh_dev);
1438 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1439 lbs_persist_config_remove(mesh_dev);
1440 unregister_netdev(mesh_dev);
1441 priv->mesh_dev = NULL;
1442 free_netdev(mesh_dev);
1443 lbs_deb_leave(LBS_DEB_MESH);
1444 }
1445
1446 /**
1447 * @brief This function finds the CFP in
1448 * region_cfp_table based on region and band parameter.
1449 *
1450 * @param region The region code
1451 * @param band The band
1452 * @param cfp_no A pointer to CFP number
1453 * @return A pointer to CFP
1454 */
1455 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1456 {
1457 int i, end;
1458
1459 lbs_deb_enter(LBS_DEB_MAIN);
1460
1461 end = ARRAY_SIZE(region_cfp_table);
1462
1463 for (i = 0; i < end ; i++) {
1464 lbs_deb_main("region_cfp_table[i].region=%d\n",
1465 region_cfp_table[i].region);
1466 if (region_cfp_table[i].region == region) {
1467 *cfp_no = region_cfp_table[i].cfp_no_BG;
1468 lbs_deb_leave(LBS_DEB_MAIN);
1469 return region_cfp_table[i].cfp_BG;
1470 }
1471 }
1472
1473 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1474 return NULL;
1475 }
1476
1477 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1478 {
1479 int ret = 0;
1480 int i = 0;
1481
1482 struct chan_freq_power *cfp;
1483 int cfp_no;
1484
1485 lbs_deb_enter(LBS_DEB_MAIN);
1486
1487 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1488
1489 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1490 if (cfp != NULL) {
1491 priv->region_channel[i].nrcfp = cfp_no;
1492 priv->region_channel[i].CFP = cfp;
1493 } else {
1494 lbs_deb_main("wrong region code %#x in band B/G\n",
1495 region);
1496 ret = -1;
1497 goto out;
1498 }
1499 priv->region_channel[i].valid = 1;
1500 priv->region_channel[i].region = region;
1501 priv->region_channel[i].band = band;
1502 i++;
1503 out:
1504 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1505 return ret;
1506 }
1507
1508 void lbs_queue_event(struct lbs_private *priv, u32 event)
1509 {
1510 unsigned long flags;
1511
1512 lbs_deb_enter(LBS_DEB_THREAD);
1513 spin_lock_irqsave(&priv->driver_lock, flags);
1514
1515 if (priv->psstate == PS_STATE_SLEEP)
1516 priv->psstate = PS_STATE_AWAKE;
1517
1518 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1519
1520 wake_up_interruptible(&priv->waitq);
1521
1522 spin_unlock_irqrestore(&priv->driver_lock, flags);
1523 lbs_deb_leave(LBS_DEB_THREAD);
1524 }
1525 EXPORT_SYMBOL_GPL(lbs_queue_event);
1526
1527 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1528 {
1529 lbs_deb_enter(LBS_DEB_THREAD);
1530
1531 if (priv->psstate == PS_STATE_SLEEP)
1532 priv->psstate = PS_STATE_AWAKE;
1533
1534 /* Swap buffers by flipping the response index */
1535 BUG_ON(resp_idx > 1);
1536 priv->resp_idx = resp_idx;
1537
1538 wake_up_interruptible(&priv->waitq);
1539
1540 lbs_deb_leave(LBS_DEB_THREAD);
1541 }
1542 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1543
1544 static int __init lbs_init_module(void)
1545 {
1546 lbs_deb_enter(LBS_DEB_MAIN);
1547 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1548 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1549 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1550 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1551 lbs_debugfs_init();
1552 lbs_deb_leave(LBS_DEB_MAIN);
1553 return 0;
1554 }
1555
1556 static void __exit lbs_exit_module(void)
1557 {
1558 lbs_deb_enter(LBS_DEB_MAIN);
1559 lbs_debugfs_remove();
1560 lbs_deb_leave(LBS_DEB_MAIN);
1561 }
1562
1563 /*
1564 * rtap interface support fuctions
1565 */
1566
1567 static int lbs_rtap_open(struct net_device *dev)
1568 {
1569 /* Yes, _stop_ the queue. Because we don't support injection */
1570 lbs_deb_enter(LBS_DEB_MAIN);
1571 netif_carrier_off(dev);
1572 netif_stop_queue(dev);
1573 lbs_deb_leave(LBS_DEB_LEAVE);
1574 return 0;
1575 }
1576
1577 static int lbs_rtap_stop(struct net_device *dev)
1578 {
1579 lbs_deb_enter(LBS_DEB_MAIN);
1580 lbs_deb_leave(LBS_DEB_MAIN);
1581 return 0;
1582 }
1583
1584 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1585 {
1586 netif_stop_queue(dev);
1587 return NETDEV_TX_BUSY;
1588 }
1589
1590 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1591 {
1592 struct lbs_private *priv = dev->ml_priv;
1593 lbs_deb_enter(LBS_DEB_NET);
1594 return &priv->stats;
1595 }
1596
1597
1598 static void lbs_remove_rtap(struct lbs_private *priv)
1599 {
1600 lbs_deb_enter(LBS_DEB_MAIN);
1601 if (priv->rtap_net_dev == NULL)
1602 goto out;
1603 unregister_netdev(priv->rtap_net_dev);
1604 free_netdev(priv->rtap_net_dev);
1605 priv->rtap_net_dev = NULL;
1606 out:
1607 lbs_deb_leave(LBS_DEB_MAIN);
1608 }
1609
1610 static int lbs_add_rtap(struct lbs_private *priv)
1611 {
1612 int ret = 0;
1613 struct net_device *rtap_dev;
1614
1615 lbs_deb_enter(LBS_DEB_MAIN);
1616 if (priv->rtap_net_dev) {
1617 ret = -EPERM;
1618 goto out;
1619 }
1620
1621 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1622 if (rtap_dev == NULL) {
1623 ret = -ENOMEM;
1624 goto out;
1625 }
1626
1627 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1628 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1629 rtap_dev->open = lbs_rtap_open;
1630 rtap_dev->stop = lbs_rtap_stop;
1631 rtap_dev->get_stats = lbs_rtap_get_stats;
1632 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1633 rtap_dev->ml_priv = priv;
1634 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1635
1636 ret = register_netdev(rtap_dev);
1637 if (ret) {
1638 free_netdev(rtap_dev);
1639 goto out;
1640 }
1641 priv->rtap_net_dev = rtap_dev;
1642
1643 out:
1644 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1645 return ret;
1646 }
1647
1648 module_init(lbs_init_module);
1649 module_exit(lbs_exit_module);
1650
1651 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1652 MODULE_AUTHOR("Marvell International Ltd.");
1653 MODULE_LICENSE("GPL");
Linux with added FPC-III support