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libertas: convert CMD_802_11_RF_TX_POWER to a direct command
[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 } else {
301 if (!priv->monitormode)
302 return strlen(buf);
303 priv->monitormode = 0;
304 lbs_remove_rtap(priv);
305
306 if (priv->currenttxskb) {
307 dev_kfree_skb_any(priv->currenttxskb);
308 priv->currenttxskb = NULL;
309 }
310
311 /* Wake queues, command thread, etc. */
312 lbs_host_to_card_done(priv);
313 }
314
315 lbs_prepare_and_send_command(priv,
316 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
317 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
318 return strlen(buf);
319 }
320
321 /**
322 * lbs_rtap attribute to be exported per ethX interface
323 * through sysfs (/sys/class/net/ethX/lbs_rtap)
324 */
325 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
326
327 /**
328 * Get function for sysfs attribute mesh
329 */
330 static ssize_t lbs_mesh_get(struct device *dev,
331 struct device_attribute *attr, char * buf)
332 {
333 struct lbs_private *priv = to_net_dev(dev)->priv;
334 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
335 }
336
337 /**
338 * Set function for sysfs attribute mesh
339 */
340 static ssize_t lbs_mesh_set(struct device *dev,
341 struct device_attribute *attr, const char * buf, size_t count)
342 {
343 struct lbs_private *priv = to_net_dev(dev)->priv;
344 int enable;
345 int ret, action = CMD_ACT_MESH_CONFIG_STOP;
346
347 sscanf(buf, "%x", &enable);
348 enable = !!enable;
349 if (enable == !!priv->mesh_dev)
350 return count;
351 if (enable)
352 action = CMD_ACT_MESH_CONFIG_START;
353 ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
354 if (ret)
355 return ret;
356
357 if (enable)
358 lbs_add_mesh(priv);
359 else
360 lbs_remove_mesh(priv);
361
362 return count;
363 }
364
365 /**
366 * lbs_mesh attribute to be exported per ethX interface
367 * through sysfs (/sys/class/net/ethX/lbs_mesh)
368 */
369 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
370
371 /**
372 * anycast_mask attribute to be exported per mshX interface
373 * through sysfs (/sys/class/net/mshX/anycast_mask)
374 */
375 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
376
377 static struct attribute *lbs_mesh_sysfs_entries[] = {
378 &dev_attr_anycast_mask.attr,
379 NULL,
380 };
381
382 static struct attribute_group lbs_mesh_attr_group = {
383 .attrs = lbs_mesh_sysfs_entries,
384 };
385
386 /**
387 * @brief This function opens the ethX or mshX interface
388 *
389 * @param dev A pointer to net_device structure
390 * @return 0 or -EBUSY if monitor mode active
391 */
392 static int lbs_dev_open(struct net_device *dev)
393 {
394 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
395 int ret = 0;
396
397 lbs_deb_enter(LBS_DEB_NET);
398
399 spin_lock_irq(&priv->driver_lock);
400
401 if (priv->monitormode) {
402 ret = -EBUSY;
403 goto out;
404 }
405
406 if (dev == priv->mesh_dev) {
407 priv->mesh_open = 1;
408 priv->mesh_connect_status = LBS_CONNECTED;
409 netif_carrier_on(dev);
410 } else {
411 priv->infra_open = 1;
412
413 if (priv->connect_status == LBS_CONNECTED)
414 netif_carrier_on(dev);
415 else
416 netif_carrier_off(dev);
417 }
418
419 if (!priv->tx_pending_len)
420 netif_wake_queue(dev);
421 out:
422
423 spin_unlock_irq(&priv->driver_lock);
424 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
425 return ret;
426 }
427
428 /**
429 * @brief This function closes the mshX interface
430 *
431 * @param dev A pointer to net_device structure
432 * @return 0
433 */
434 static int lbs_mesh_stop(struct net_device *dev)
435 {
436 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
437
438 lbs_deb_enter(LBS_DEB_MESH);
439 spin_lock_irq(&priv->driver_lock);
440
441 priv->mesh_open = 0;
442 priv->mesh_connect_status = LBS_DISCONNECTED;
443
444 netif_stop_queue(dev);
445 netif_carrier_off(dev);
446
447 spin_unlock_irq(&priv->driver_lock);
448
449 schedule_work(&priv->mcast_work);
450
451 lbs_deb_leave(LBS_DEB_MESH);
452 return 0;
453 }
454
455 /**
456 * @brief This function closes the ethX interface
457 *
458 * @param dev A pointer to net_device structure
459 * @return 0
460 */
461 static int lbs_eth_stop(struct net_device *dev)
462 {
463 struct lbs_private *priv = (struct lbs_private *) dev->priv;
464
465 lbs_deb_enter(LBS_DEB_NET);
466
467 spin_lock_irq(&priv->driver_lock);
468 priv->infra_open = 0;
469 netif_stop_queue(dev);
470 spin_unlock_irq(&priv->driver_lock);
471
472 schedule_work(&priv->mcast_work);
473
474 lbs_deb_leave(LBS_DEB_NET);
475 return 0;
476 }
477
478 static void lbs_tx_timeout(struct net_device *dev)
479 {
480 struct lbs_private *priv = (struct lbs_private *) dev->priv;
481
482 lbs_deb_enter(LBS_DEB_TX);
483
484 lbs_pr_err("tx watch dog timeout\n");
485
486 dev->trans_start = jiffies;
487
488 if (priv->currenttxskb)
489 lbs_send_tx_feedback(priv, 0);
490
491 /* XX: Shouldn't we also call into the hw-specific driver
492 to kick it somehow? */
493 lbs_host_to_card_done(priv);
494
495 /* More often than not, this actually happens because the
496 firmware has crapped itself -- rather than just a very
497 busy medium. So send a harmless command, and if/when
498 _that_ times out, we'll kick it in the head. */
499 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
500 0, 0, NULL);
501
502 lbs_deb_leave(LBS_DEB_TX);
503 }
504
505 void lbs_host_to_card_done(struct lbs_private *priv)
506 {
507 unsigned long flags;
508
509 lbs_deb_enter(LBS_DEB_THREAD);
510
511 spin_lock_irqsave(&priv->driver_lock, flags);
512
513 priv->dnld_sent = DNLD_RES_RECEIVED;
514
515 /* Wake main thread if commands are pending */
516 if (!priv->cur_cmd || priv->tx_pending_len > 0)
517 wake_up_interruptible(&priv->waitq);
518
519 spin_unlock_irqrestore(&priv->driver_lock, flags);
520 lbs_deb_leave(LBS_DEB_THREAD);
521 }
522 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
523
524 /**
525 * @brief This function returns the network statistics
526 *
527 * @param dev A pointer to struct lbs_private structure
528 * @return A pointer to net_device_stats structure
529 */
530 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
531 {
532 struct lbs_private *priv = (struct lbs_private *) dev->priv;
533
534 lbs_deb_enter(LBS_DEB_NET);
535 return &priv->stats;
536 }
537
538 static int lbs_set_mac_address(struct net_device *dev, void *addr)
539 {
540 int ret = 0;
541 struct lbs_private *priv = (struct lbs_private *) dev->priv;
542 struct sockaddr *phwaddr = addr;
543 struct cmd_ds_802_11_mac_address cmd;
544
545 lbs_deb_enter(LBS_DEB_NET);
546
547 /* In case it was called from the mesh device */
548 dev = priv->dev;
549
550 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
551 cmd.action = cpu_to_le16(CMD_ACT_SET);
552 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
553
554 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
555 if (ret) {
556 lbs_deb_net("set MAC address failed\n");
557 goto done;
558 }
559
560 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
561 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
562 if (priv->mesh_dev)
563 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
564
565 done:
566 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
567 return ret;
568 }
569
570
571 static inline int mac_in_list(unsigned char *list, int list_len,
572 unsigned char *mac)
573 {
574 while (list_len) {
575 if (!memcmp(list, mac, ETH_ALEN))
576 return 1;
577 list += ETH_ALEN;
578 list_len--;
579 }
580 return 0;
581 }
582
583
584 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
585 struct net_device *dev, int nr_addrs)
586 {
587 int i = nr_addrs;
588 struct dev_mc_list *mc_list;
589 DECLARE_MAC_BUF(mac);
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:%s skipped\n", dev->name,
598 print_mac(mac, 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:%s added to filter\n", dev->name,
606 print_mac(mac, 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 = dev->priv;
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 = dev->priv;
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->radioon = RADIO_ON;
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 = dev->priv;
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 destroy_workqueue(priv->work_thread);
1207
1208 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1209 priv->psmode = LBS802_11POWERMODECAM;
1210 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1211 }
1212
1213 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1214 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1215 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1216
1217 /* Stop the thread servicing the interrupts */
1218 priv->surpriseremoved = 1;
1219 kthread_stop(priv->main_thread);
1220
1221 lbs_free_adapter(priv);
1222
1223 priv->dev = NULL;
1224 free_netdev(dev);
1225
1226 lbs_deb_leave(LBS_DEB_MAIN);
1227 }
1228 EXPORT_SYMBOL_GPL(lbs_remove_card);
1229
1230
1231 int lbs_start_card(struct lbs_private *priv)
1232 {
1233 struct net_device *dev = priv->dev;
1234 int ret = -1;
1235
1236 lbs_deb_enter(LBS_DEB_MAIN);
1237
1238 /* poke the firmware */
1239 ret = lbs_setup_firmware(priv);
1240 if (ret)
1241 goto done;
1242
1243 /* init 802.11d */
1244 lbs_init_11d(priv);
1245
1246 if (register_netdev(dev)) {
1247 lbs_pr_err("cannot register ethX device\n");
1248 goto done;
1249 }
1250
1251 lbs_update_channel(priv);
1252
1253 /* 5.0.16p0 is known to NOT support any mesh */
1254 if (priv->fwrelease > 0x05001000) {
1255 /* Enable mesh, if supported, and work out which TLV it uses.
1256 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1257 0x100 + 37 is the official value used in 5.110.21.pXX
1258 but we check them in that order because 20.pXX doesn't
1259 give an error -- it just silently fails. */
1260
1261 /* 5.110.20.pXX firmware will fail the command if the channel
1262 doesn't match the existing channel. But only if the TLV
1263 is correct. If the channel is wrong, _BOTH_ versions will
1264 give an error to 0x100+291, and allow 0x100+37 to succeed.
1265 It's just that 5.110.20.pXX will not have done anything
1266 useful */
1267
1268 priv->mesh_tlv = 0x100 + 291;
1269 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1270 priv->curbssparams.channel)) {
1271 priv->mesh_tlv = 0x100 + 37;
1272 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1273 priv->curbssparams.channel))
1274 priv->mesh_tlv = 0;
1275 }
1276 if (priv->mesh_tlv) {
1277 lbs_add_mesh(priv);
1278
1279 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1280 lbs_pr_err("cannot register lbs_mesh attribute\n");
1281
1282 /* While rtap isn't related to mesh, only mesh-enabled
1283 * firmware implements the rtap functionality via
1284 * CMD_802_11_MONITOR_MODE.
1285 */
1286 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1287 lbs_pr_err("cannot register lbs_rtap attribute\n");
1288 }
1289 }
1290
1291 lbs_debugfs_init_one(priv, dev);
1292
1293 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1294
1295 ret = 0;
1296
1297 done:
1298 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1299 return ret;
1300 }
1301 EXPORT_SYMBOL_GPL(lbs_start_card);
1302
1303
1304 void lbs_stop_card(struct lbs_private *priv)
1305 {
1306 struct net_device *dev = priv->dev;
1307 struct cmd_ctrl_node *cmdnode;
1308 unsigned long flags;
1309
1310 lbs_deb_enter(LBS_DEB_MAIN);
1311
1312 if (!priv)
1313 goto out;
1314
1315 netif_stop_queue(priv->dev);
1316 netif_carrier_off(priv->dev);
1317
1318 lbs_debugfs_remove_one(priv);
1319 if (priv->mesh_tlv) {
1320 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1321 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1322 }
1323
1324 /* Flush pending command nodes */
1325 del_timer_sync(&priv->command_timer);
1326 spin_lock_irqsave(&priv->driver_lock, flags);
1327 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1328 cmdnode->result = -ENOENT;
1329 cmdnode->cmdwaitqwoken = 1;
1330 wake_up_interruptible(&cmdnode->cmdwait_q);
1331 }
1332 spin_unlock_irqrestore(&priv->driver_lock, flags);
1333
1334 unregister_netdev(dev);
1335
1336 out:
1337 lbs_deb_leave(LBS_DEB_MAIN);
1338 }
1339 EXPORT_SYMBOL_GPL(lbs_stop_card);
1340
1341
1342 /**
1343 * @brief This function adds mshX interface
1344 *
1345 * @param priv A pointer to the struct lbs_private structure
1346 * @return 0 if successful, -X otherwise
1347 */
1348 static int lbs_add_mesh(struct lbs_private *priv)
1349 {
1350 struct net_device *mesh_dev = NULL;
1351 int ret = 0;
1352
1353 lbs_deb_enter(LBS_DEB_MESH);
1354
1355 /* Allocate a virtual mesh device */
1356 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1357 lbs_deb_mesh("init mshX device failed\n");
1358 ret = -ENOMEM;
1359 goto done;
1360 }
1361 mesh_dev->priv = priv;
1362 priv->mesh_dev = mesh_dev;
1363
1364 mesh_dev->open = lbs_dev_open;
1365 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1366 mesh_dev->stop = lbs_mesh_stop;
1367 mesh_dev->get_stats = lbs_get_stats;
1368 mesh_dev->set_mac_address = lbs_set_mac_address;
1369 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1370 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1371 sizeof(priv->dev->dev_addr));
1372
1373 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1374
1375 #ifdef WIRELESS_EXT
1376 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1377 #endif
1378 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1379 mesh_dev->set_multicast_list = lbs_set_multicast_list;
1380 /* Register virtual mesh interface */
1381 ret = register_netdev(mesh_dev);
1382 if (ret) {
1383 lbs_pr_err("cannot register mshX virtual interface\n");
1384 goto err_free;
1385 }
1386
1387 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1388 if (ret)
1389 goto err_unregister;
1390
1391 lbs_persist_config_init(mesh_dev);
1392
1393 /* Everything successful */
1394 ret = 0;
1395 goto done;
1396
1397 err_unregister:
1398 unregister_netdev(mesh_dev);
1399
1400 err_free:
1401 free_netdev(mesh_dev);
1402
1403 done:
1404 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1405 return ret;
1406 }
1407
1408 static void lbs_remove_mesh(struct lbs_private *priv)
1409 {
1410 struct net_device *mesh_dev;
1411
1412
1413 mesh_dev = priv->mesh_dev;
1414 if (!mesh_dev)
1415 return;
1416
1417 lbs_deb_enter(LBS_DEB_MESH);
1418 netif_stop_queue(mesh_dev);
1419 netif_carrier_off(mesh_dev);
1420 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1421 lbs_persist_config_remove(mesh_dev);
1422 unregister_netdev(mesh_dev);
1423 priv->mesh_dev = NULL;
1424 free_netdev(mesh_dev);
1425 lbs_deb_leave(LBS_DEB_MESH);
1426 }
1427
1428 /**
1429 * @brief This function finds the CFP in
1430 * region_cfp_table based on region and band parameter.
1431 *
1432 * @param region The region code
1433 * @param band The band
1434 * @param cfp_no A pointer to CFP number
1435 * @return A pointer to CFP
1436 */
1437 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1438 {
1439 int i, end;
1440
1441 lbs_deb_enter(LBS_DEB_MAIN);
1442
1443 end = ARRAY_SIZE(region_cfp_table);
1444
1445 for (i = 0; i < end ; i++) {
1446 lbs_deb_main("region_cfp_table[i].region=%d\n",
1447 region_cfp_table[i].region);
1448 if (region_cfp_table[i].region == region) {
1449 *cfp_no = region_cfp_table[i].cfp_no_BG;
1450 lbs_deb_leave(LBS_DEB_MAIN);
1451 return region_cfp_table[i].cfp_BG;
1452 }
1453 }
1454
1455 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1456 return NULL;
1457 }
1458
1459 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1460 {
1461 int ret = 0;
1462 int i = 0;
1463
1464 struct chan_freq_power *cfp;
1465 int cfp_no;
1466
1467 lbs_deb_enter(LBS_DEB_MAIN);
1468
1469 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1470
1471 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1472 if (cfp != NULL) {
1473 priv->region_channel[i].nrcfp = cfp_no;
1474 priv->region_channel[i].CFP = cfp;
1475 } else {
1476 lbs_deb_main("wrong region code %#x in band B/G\n",
1477 region);
1478 ret = -1;
1479 goto out;
1480 }
1481 priv->region_channel[i].valid = 1;
1482 priv->region_channel[i].region = region;
1483 priv->region_channel[i].band = band;
1484 i++;
1485 out:
1486 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1487 return ret;
1488 }
1489
1490 void lbs_queue_event(struct lbs_private *priv, u32 event)
1491 {
1492 unsigned long flags;
1493
1494 lbs_deb_enter(LBS_DEB_THREAD);
1495 spin_lock_irqsave(&priv->driver_lock, flags);
1496
1497 if (priv->psstate == PS_STATE_SLEEP)
1498 priv->psstate = PS_STATE_AWAKE;
1499
1500 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1501
1502 wake_up_interruptible(&priv->waitq);
1503
1504 spin_unlock_irqrestore(&priv->driver_lock, flags);
1505 lbs_deb_leave(LBS_DEB_THREAD);
1506 }
1507 EXPORT_SYMBOL_GPL(lbs_queue_event);
1508
1509 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1510 {
1511 lbs_deb_enter(LBS_DEB_THREAD);
1512
1513 if (priv->psstate == PS_STATE_SLEEP)
1514 priv->psstate = PS_STATE_AWAKE;
1515
1516 /* Swap buffers by flipping the response index */
1517 BUG_ON(resp_idx > 1);
1518 priv->resp_idx = resp_idx;
1519
1520 wake_up_interruptible(&priv->waitq);
1521
1522 lbs_deb_leave(LBS_DEB_THREAD);
1523 }
1524 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1525
1526 static int __init lbs_init_module(void)
1527 {
1528 lbs_deb_enter(LBS_DEB_MAIN);
1529 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1530 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1531 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1532 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1533 lbs_debugfs_init();
1534 lbs_deb_leave(LBS_DEB_MAIN);
1535 return 0;
1536 }
1537
1538 static void __exit lbs_exit_module(void)
1539 {
1540 lbs_deb_enter(LBS_DEB_MAIN);
1541 lbs_debugfs_remove();
1542 lbs_deb_leave(LBS_DEB_MAIN);
1543 }
1544
1545 /*
1546 * rtap interface support fuctions
1547 */
1548
1549 static int lbs_rtap_open(struct net_device *dev)
1550 {
1551 /* Yes, _stop_ the queue. Because we don't support injection */
1552 lbs_deb_enter(LBS_DEB_MAIN);
1553 netif_carrier_off(dev);
1554 netif_stop_queue(dev);
1555 lbs_deb_leave(LBS_DEB_LEAVE);
1556 return 0;
1557 }
1558
1559 static int lbs_rtap_stop(struct net_device *dev)
1560 {
1561 lbs_deb_enter(LBS_DEB_MAIN);
1562 lbs_deb_leave(LBS_DEB_MAIN);
1563 return 0;
1564 }
1565
1566 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1567 {
1568 netif_stop_queue(dev);
1569 return NETDEV_TX_BUSY;
1570 }
1571
1572 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1573 {
1574 struct lbs_private *priv = dev->priv;
1575 lbs_deb_enter(LBS_DEB_NET);
1576 return &priv->stats;
1577 }
1578
1579
1580 static void lbs_remove_rtap(struct lbs_private *priv)
1581 {
1582 lbs_deb_enter(LBS_DEB_MAIN);
1583 if (priv->rtap_net_dev == NULL)
1584 goto out;
1585 unregister_netdev(priv->rtap_net_dev);
1586 free_netdev(priv->rtap_net_dev);
1587 priv->rtap_net_dev = NULL;
1588 out:
1589 lbs_deb_leave(LBS_DEB_MAIN);
1590 }
1591
1592 static int lbs_add_rtap(struct lbs_private *priv)
1593 {
1594 int ret = 0;
1595 struct net_device *rtap_dev;
1596
1597 lbs_deb_enter(LBS_DEB_MAIN);
1598 if (priv->rtap_net_dev) {
1599 ret = -EPERM;
1600 goto out;
1601 }
1602
1603 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1604 if (rtap_dev == NULL) {
1605 ret = -ENOMEM;
1606 goto out;
1607 }
1608
1609 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1610 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1611 rtap_dev->open = lbs_rtap_open;
1612 rtap_dev->stop = lbs_rtap_stop;
1613 rtap_dev->get_stats = lbs_rtap_get_stats;
1614 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1615 rtap_dev->priv = priv;
1616 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1617
1618 ret = register_netdev(rtap_dev);
1619 if (ret) {
1620 free_netdev(rtap_dev);
1621 goto out;
1622 }
1623 priv->rtap_net_dev = rtap_dev;
1624
1625 out:
1626 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1627 return ret;
1628 }
1629
1630 #ifndef CONFIG_IEEE80211
1631 const char *escape_essid(const char *essid, u8 essid_len)
1632 {
1633 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1634 const char *s = essid;
1635 char *d = escaped;
1636
1637 if (ieee80211_is_empty_essid(essid, essid_len)) {
1638 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1639 return escaped;
1640 }
1641
1642 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1643 while (essid_len--) {
1644 if (*s == '\0') {
1645 *d++ = '\\';
1646 *d++ = '0';
1647 s++;
1648 } else {
1649 *d++ = *s++;
1650 }
1651 }
1652 *d = '\0';
1653 return escaped;
1654 }
1655 #endif
1656
1657 module_init(lbs_init_module);
1658 module_exit(lbs_exit_module);
1659
1660 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1661 MODULE_AUTHOR("Marvell International Ltd.");
1662 MODULE_LICENSE("GPL");
kernel source for telekom puls (alcatel/mediatek)