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libertas: before sleeping, check for a command result
[firewire-audio.git] / drivers / net / wireless / libertas / main.c
blobfaa4db1838b6396d4b50ae824d694210a85ebe43
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13 #include <linux/kfifo.h>
14 #include <linux/stddef.h>
15
16 #include <net/iw_handler.h>
17 #include <net/ieee80211.h>
18
19 #include "host.h"
20 #include "decl.h"
21 #include "dev.h"
22 #include "wext.h"
23 #include "debugfs.h"
24 #include "scan.h"
25 #include "assoc.h"
26 #include "cmd.h"
27
28 #define DRIVER_RELEASE_VERSION "323.p0"
29 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
30 #ifdef DEBUG
31 "-dbg"
32 #endif
33 "";
34
35
36 /* Module parameters */
37 unsigned int lbs_debug;
38 EXPORT_SYMBOL_GPL(lbs_debug);
39 module_param_named(libertas_debug, lbs_debug, int, 0644);
40
41
42 /* This global structure is used to send the confirm_sleep command as
43 * fast as possible down to the firmware. */
44 struct cmd_confirm_sleep confirm_sleep;
45
46
47 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
48 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
49 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
50 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
51 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
52
53 /* Format { channel, frequency (MHz), maxtxpower } */
54 /* band: 'B/G', region: USA FCC/Canada IC */
55 static struct chan_freq_power channel_freq_power_US_BG[] = {
56 {1, 2412, LBS_TX_PWR_US_DEFAULT},
57 {2, 2417, LBS_TX_PWR_US_DEFAULT},
58 {3, 2422, LBS_TX_PWR_US_DEFAULT},
59 {4, 2427, LBS_TX_PWR_US_DEFAULT},
60 {5, 2432, LBS_TX_PWR_US_DEFAULT},
61 {6, 2437, LBS_TX_PWR_US_DEFAULT},
62 {7, 2442, LBS_TX_PWR_US_DEFAULT},
63 {8, 2447, LBS_TX_PWR_US_DEFAULT},
64 {9, 2452, LBS_TX_PWR_US_DEFAULT},
65 {10, 2457, LBS_TX_PWR_US_DEFAULT},
66 {11, 2462, LBS_TX_PWR_US_DEFAULT}
67 };
68
69 /* band: 'B/G', region: Europe ETSI */
70 static struct chan_freq_power channel_freq_power_EU_BG[] = {
71 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
72 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
73 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
74 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
75 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
76 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
77 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
78 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
79 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
80 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
81 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
82 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
83 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
84 };
85
86 /* band: 'B/G', region: Spain */
87 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
88 {10, 2457, LBS_TX_PWR_DEFAULT},
89 {11, 2462, LBS_TX_PWR_DEFAULT}
90 };
91
92 /* band: 'B/G', region: France */
93 static struct chan_freq_power channel_freq_power_FR_BG[] = {
94 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
95 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
96 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
97 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
98 };
99
100 /* band: 'B/G', region: Japan */
101 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
102 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
103 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
104 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
105 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
106 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
107 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
108 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
109 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
110 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
111 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
112 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
113 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
114 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
115 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
116 };
117
118 /**
119 * the structure for channel, frequency and power
120 */
121 struct region_cfp_table {
122 u8 region;
123 struct chan_freq_power *cfp_BG;
124 int cfp_no_BG;
125 };
126
127 /**
128 * the structure for the mapping between region and CFP
129 */
130 static struct region_cfp_table region_cfp_table[] = {
131 {0x10, /*US FCC */
132 channel_freq_power_US_BG,
133 ARRAY_SIZE(channel_freq_power_US_BG),
134 }
135 ,
136 {0x20, /*CANADA IC */
137 channel_freq_power_US_BG,
138 ARRAY_SIZE(channel_freq_power_US_BG),
139 }
140 ,
141 {0x30, /*EU*/ channel_freq_power_EU_BG,
142 ARRAY_SIZE(channel_freq_power_EU_BG),
143 }
144 ,
145 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
146 ARRAY_SIZE(channel_freq_power_SPN_BG),
147 }
148 ,
149 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
150 ARRAY_SIZE(channel_freq_power_FR_BG),
151 }
152 ,
153 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
154 ARRAY_SIZE(channel_freq_power_JPN_BG),
155 }
156 ,
157 /*Add new region here */
158 };
159
160 /**
161 * the table to keep region code
162 */
163 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
164 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
165
166 /**
167 * 802.11b/g supported bitrates (in 500Kb/s units)
168 */
169 u8 lbs_bg_rates[MAX_RATES] =
170 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
171 0x00, 0x00 };
172
173 /**
174 * FW rate table. FW refers to rates by their index in this table, not by the
175 * rate value itself. Values of 0x00 are
176 * reserved positions.
177 */
178 static u8 fw_data_rates[MAX_RATES] =
179 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
180 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
181 };
182
183 /**
184 * @brief use index to get the data rate
185 *
186 * @param idx The index of data rate
187 * @return data rate or 0
188 */
189 u32 lbs_fw_index_to_data_rate(u8 idx)
190 {
191 if (idx >= sizeof(fw_data_rates))
192 idx = 0;
193 return fw_data_rates[idx];
194 }
195
196 /**
197 * @brief use rate to get the index
198 *
199 * @param rate data rate
200 * @return index or 0
201 */
202 u8 lbs_data_rate_to_fw_index(u32 rate)
203 {
204 u8 i;
205
206 if (!rate)
207 return 0;
208
209 for (i = 0; i < sizeof(fw_data_rates); i++) {
210 if (rate == fw_data_rates[i])
211 return i;
212 }
213 return 0;
214 }
215
216 /**
217 * Attributes exported through sysfs
218 */
219
220 /**
221 * @brief Get function for sysfs attribute anycast_mask
222 */
223 static ssize_t lbs_anycast_get(struct device *dev,
224 struct device_attribute *attr, char * buf)
225 {
226 struct lbs_private *priv = to_net_dev(dev)->priv;
227 struct cmd_ds_mesh_access mesh_access;
228 int ret;
229
230 memset(&mesh_access, 0, sizeof(mesh_access));
231
232 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
233 if (ret)
234 return ret;
235
236 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
237 }
238
239 /**
240 * @brief Set function for sysfs attribute anycast_mask
241 */
242 static ssize_t lbs_anycast_set(struct device *dev,
243 struct device_attribute *attr, const char * buf, size_t count)
244 {
245 struct lbs_private *priv = to_net_dev(dev)->priv;
246 struct cmd_ds_mesh_access mesh_access;
247 uint32_t datum;
248 int ret;
249
250 memset(&mesh_access, 0, sizeof(mesh_access));
251 sscanf(buf, "%x", &datum);
252 mesh_access.data[0] = cpu_to_le32(datum);
253
254 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
255 if (ret)
256 return ret;
257
258 return strlen(buf);
259 }
260
261 static int lbs_add_rtap(struct lbs_private *priv);
262 static void lbs_remove_rtap(struct lbs_private *priv);
263 static int lbs_add_mesh(struct lbs_private *priv);
264 static void lbs_remove_mesh(struct lbs_private *priv);
265
266
267 /**
268 * Get function for sysfs attribute rtap
269 */
270 static ssize_t lbs_rtap_get(struct device *dev,
271 struct device_attribute *attr, char * buf)
272 {
273 struct lbs_private *priv = to_net_dev(dev)->priv;
274 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
275 }
276
277 /**
278 * Set function for sysfs attribute rtap
279 */
280 static ssize_t lbs_rtap_set(struct device *dev,
281 struct device_attribute *attr, const char * buf, size_t count)
282 {
283 int monitor_mode;
284 struct lbs_private *priv = to_net_dev(dev)->priv;
285
286 sscanf(buf, "%x", &monitor_mode);
287 if (monitor_mode) {
288 if (priv->monitormode == monitor_mode)
289 return strlen(buf);
290 if (!priv->monitormode) {
291 if (priv->infra_open || priv->mesh_open)
292 return -EBUSY;
293 if (priv->mode == IW_MODE_INFRA)
294 lbs_send_deauthentication(priv);
295 else if (priv->mode == IW_MODE_ADHOC)
296 lbs_stop_adhoc_network(priv);
297 lbs_add_rtap(priv);
298 }
299 priv->monitormode = monitor_mode;
300 }
301
302 else {
303 if (!priv->monitormode)
304 return strlen(buf);
305 priv->monitormode = 0;
306 lbs_remove_rtap(priv);
307
308 if (priv->currenttxskb) {
309 dev_kfree_skb_any(priv->currenttxskb);
310 priv->currenttxskb = NULL;
311 }
312
313 /* Wake queues, command thread, etc. */
314 lbs_host_to_card_done(priv);
315 }
316
317 lbs_prepare_and_send_command(priv,
318 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
319 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
320 return strlen(buf);
321 }
322
323 /**
324 * lbs_rtap attribute to be exported per ethX interface
325 * through sysfs (/sys/class/net/ethX/lbs_rtap)
326 */
327 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
328
329 /**
330 * Get function for sysfs attribute mesh
331 */
332 static ssize_t lbs_mesh_get(struct device *dev,
333 struct device_attribute *attr, char * buf)
334 {
335 struct lbs_private *priv = to_net_dev(dev)->priv;
336 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
337 }
338
339 /**
340 * Set function for sysfs attribute mesh
341 */
342 static ssize_t lbs_mesh_set(struct device *dev,
343 struct device_attribute *attr, const char * buf, size_t count)
344 {
345 struct lbs_private *priv = to_net_dev(dev)->priv;
346 int enable;
347 int ret, action = CMD_ACT_MESH_CONFIG_STOP;
348
349 sscanf(buf, "%x", &enable);
350 enable = !!enable;
351 if (enable == !!priv->mesh_dev)
352 return count;
353 if (enable)
354 action = CMD_ACT_MESH_CONFIG_START;
355 ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
356 if (ret)
357 return ret;
358
359 if (enable)
360 lbs_add_mesh(priv);
361 else
362 lbs_remove_mesh(priv);
363
364 return count;
365 }
366
367 /**
368 * lbs_mesh attribute to be exported per ethX interface
369 * through sysfs (/sys/class/net/ethX/lbs_mesh)
370 */
371 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
372
373 /**
374 * anycast_mask attribute to be exported per mshX interface
375 * through sysfs (/sys/class/net/mshX/anycast_mask)
376 */
377 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
378
379 static struct attribute *lbs_mesh_sysfs_entries[] = {
380 &dev_attr_anycast_mask.attr,
381 NULL,
382 };
383
384 static struct attribute_group lbs_mesh_attr_group = {
385 .attrs = lbs_mesh_sysfs_entries,
386 };
387
388 /**
389 * @brief This function opens the ethX or mshX interface
390 *
391 * @param dev A pointer to net_device structure
392 * @return 0 or -EBUSY if monitor mode active
393 */
394 static int lbs_dev_open(struct net_device *dev)
395 {
396 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
397 int ret = 0;
398
399 lbs_deb_enter(LBS_DEB_NET);
400
401 spin_lock_irq(&priv->driver_lock);
402
403 if (priv->monitormode) {
404 ret = -EBUSY;
405 goto out;
406 }
407
408 if (dev == priv->mesh_dev) {
409 priv->mesh_open = 1;
410 priv->mesh_connect_status = LBS_CONNECTED;
411 netif_carrier_on(dev);
412 } else {
413 priv->infra_open = 1;
414
415 if (priv->connect_status == LBS_CONNECTED)
416 netif_carrier_on(dev);
417 else
418 netif_carrier_off(dev);
419 }
420
421 if (!priv->tx_pending_len)
422 netif_wake_queue(dev);
423 out:
424
425 spin_unlock_irq(&priv->driver_lock);
426 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
427 return ret;
428 }
429
430 /**
431 * @brief This function closes the mshX interface
432 *
433 * @param dev A pointer to net_device structure
434 * @return 0
435 */
436 static int lbs_mesh_stop(struct net_device *dev)
437 {
438 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
439
440 lbs_deb_enter(LBS_DEB_MESH);
441 spin_lock_irq(&priv->driver_lock);
442
443 priv->mesh_open = 0;
444 priv->mesh_connect_status = LBS_DISCONNECTED;
445
446 netif_stop_queue(dev);
447 netif_carrier_off(dev);
448
449 spin_unlock_irq(&priv->driver_lock);
450
451 schedule_work(&priv->mcast_work);
452
453 lbs_deb_leave(LBS_DEB_MESH);
454 return 0;
455 }
456
457 /**
458 * @brief This function closes the ethX interface
459 *
460 * @param dev A pointer to net_device structure
461 * @return 0
462 */
463 static int lbs_eth_stop(struct net_device *dev)
464 {
465 struct lbs_private *priv = (struct lbs_private *) dev->priv;
466
467 lbs_deb_enter(LBS_DEB_NET);
468
469 spin_lock_irq(&priv->driver_lock);
470 priv->infra_open = 0;
471 netif_stop_queue(dev);
472 spin_unlock_irq(&priv->driver_lock);
473
474 schedule_work(&priv->mcast_work);
475
476 lbs_deb_leave(LBS_DEB_NET);
477 return 0;
478 }
479
480 static void lbs_tx_timeout(struct net_device *dev)
481 {
482 struct lbs_private *priv = (struct lbs_private *) dev->priv;
483
484 lbs_deb_enter(LBS_DEB_TX);
485
486 lbs_pr_err("tx watch dog timeout\n");
487
488 dev->trans_start = jiffies;
489
490 if (priv->currenttxskb)
491 lbs_send_tx_feedback(priv, 0);
492
493 /* XX: Shouldn't we also call into the hw-specific driver
494 to kick it somehow? */
495 lbs_host_to_card_done(priv);
496
497 /* More often than not, this actually happens because the
498 firmware has crapped itself -- rather than just a very
499 busy medium. So send a harmless command, and if/when
500 _that_ times out, we'll kick it in the head. */
501 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
502 0, 0, NULL);
503
504 lbs_deb_leave(LBS_DEB_TX);
505 }
506
507 void lbs_host_to_card_done(struct lbs_private *priv)
508 {
509 unsigned long flags;
510
511 lbs_deb_enter(LBS_DEB_THREAD);
512
513 spin_lock_irqsave(&priv->driver_lock, flags);
514
515 priv->dnld_sent = DNLD_RES_RECEIVED;
516
517 /* Wake main thread if commands are pending */
518 if (!priv->cur_cmd || priv->tx_pending_len > 0)
519 wake_up_interruptible(&priv->waitq);
520
521 spin_unlock_irqrestore(&priv->driver_lock, flags);
522 lbs_deb_leave(LBS_DEB_THREAD);
523 }
524 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
525
526 /**
527 * @brief This function returns the network statistics
528 *
529 * @param dev A pointer to struct lbs_private structure
530 * @return A pointer to net_device_stats structure
531 */
532 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
533 {
534 struct lbs_private *priv = (struct lbs_private *) dev->priv;
535
536 lbs_deb_enter(LBS_DEB_NET);
537 return &priv->stats;
538 }
539
540 static int lbs_set_mac_address(struct net_device *dev, void *addr)
541 {
542 int ret = 0;
543 struct lbs_private *priv = (struct lbs_private *) dev->priv;
544 struct sockaddr *phwaddr = addr;
545 struct cmd_ds_802_11_mac_address cmd;
546
547 lbs_deb_enter(LBS_DEB_NET);
548
549 /* In case it was called from the mesh device */
550 dev = priv->dev;
551
552 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
553 cmd.action = cpu_to_le16(CMD_ACT_SET);
554 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
555
556 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
557 if (ret) {
558 lbs_deb_net("set MAC address failed\n");
559 goto done;
560 }
561
562 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
563 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
564 if (priv->mesh_dev)
565 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
566
567 done:
568 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
569 return ret;
570 }
571
572
573 static inline int mac_in_list(unsigned char *list, int list_len,
574 unsigned char *mac)
575 {
576 while (list_len) {
577 if (!memcmp(list, mac, ETH_ALEN))
578 return 1;
579 list += ETH_ALEN;
580 list_len--;
581 }
582 return 0;
583 }
584
585
586 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
587 struct net_device *dev, int nr_addrs)
588 {
589 int i = nr_addrs;
590 struct dev_mc_list *mc_list;
591 DECLARE_MAC_BUF(mac);
592
593 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
594 return nr_addrs;
595
596 netif_tx_lock_bh(dev);
597 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
598 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
599 lbs_deb_net("mcast address %s:%s skipped\n", dev->name,
600 print_mac(mac, mc_list->dmi_addr));
601 continue;
602 }
603
604 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
605 break;
606 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
607 lbs_deb_net("mcast address %s:%s added to filter\n", dev->name,
608 print_mac(mac, mc_list->dmi_addr));
609 i++;
610 }
611 netif_tx_unlock_bh(dev);
612 if (mc_list)
613 return -EOVERFLOW;
614
615 return i;
616 }
617
618 static void lbs_set_mcast_worker(struct work_struct *work)
619 {
620 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
621 struct cmd_ds_mac_multicast_adr mcast_cmd;
622 int dev_flags;
623 int nr_addrs;
624 int old_mac_control = priv->mac_control;
625
626 lbs_deb_enter(LBS_DEB_NET);
627
628 dev_flags = priv->dev->flags;
629 if (priv->mesh_dev)
630 dev_flags |= priv->mesh_dev->flags;
631
632 if (dev_flags & IFF_PROMISC) {
633 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
634 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
635 CMD_ACT_MAC_MULTICAST_ENABLE);
636 goto out_set_mac_control;
637 } else if (dev_flags & IFF_ALLMULTI) {
638 do_allmulti:
639 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
640 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
641 CMD_ACT_MAC_MULTICAST_ENABLE);
642 goto out_set_mac_control;
643 }
644
645 /* Once for priv->dev, again for priv->mesh_dev if it exists */
646 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
647 if (nr_addrs >= 0 && priv->mesh_dev)
648 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
649 if (nr_addrs < 0)
650 goto do_allmulti;
651
652 if (nr_addrs) {
653 int size = offsetof(struct cmd_ds_mac_multicast_adr,
654 maclist[6*nr_addrs]);
655
656 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
657 mcast_cmd.hdr.size = cpu_to_le16(size);
658 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
659
660 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
661
662 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
663 } else
664 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
665
666 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
667 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
668 out_set_mac_control:
669 if (priv->mac_control != old_mac_control)
670 lbs_set_mac_control(priv);
671
672 lbs_deb_leave(LBS_DEB_NET);
673 }
674
675 static void lbs_set_multicast_list(struct net_device *dev)
676 {
677 struct lbs_private *priv = dev->priv;
678
679 schedule_work(&priv->mcast_work);
680 }
681
682 /**
683 * @brief This function handles the major jobs in the LBS driver.
684 * It handles all events generated by firmware, RX data received
685 * from firmware and TX data sent from kernel.
686 *
687 * @param data A pointer to lbs_thread structure
688 * @return 0
689 */
690 static int lbs_thread(void *data)
691 {
692 struct net_device *dev = data;
693 struct lbs_private *priv = dev->priv;
694 wait_queue_t wait;
695
696 lbs_deb_enter(LBS_DEB_THREAD);
697
698 init_waitqueue_entry(&wait, current);
699
700 for (;;) {
701 int shouldsleep;
702 u8 resp_idx;
703
704 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
705 priv->currenttxskb, priv->dnld_sent);
706
707 add_wait_queue(&priv->waitq, &wait);
708 set_current_state(TASK_INTERRUPTIBLE);
709 spin_lock_irq(&priv->driver_lock);
710
711 if (kthread_should_stop())
712 shouldsleep = 0; /* Bye */
713 else if (priv->surpriseremoved)
714 shouldsleep = 1; /* We need to wait until we're _told_ to die */
715 else if (priv->psstate == PS_STATE_SLEEP)
716 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
717 else if (priv->cmd_timed_out)
718 shouldsleep = 0; /* Command timed out. Recover */
719 else if (!priv->fw_ready)
720 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
721 else if (priv->dnld_sent)
722 shouldsleep = 1; /* Something is en route to the device already */
723 else if (priv->tx_pending_len > 0)
724 shouldsleep = 0; /* We've a packet to send */
725 else if (priv->resp_len[priv->resp_idx])
726 shouldsleep = 0; /* We have a command response */
727 else if (priv->cur_cmd)
728 shouldsleep = 1; /* Can't send a command; one already running */
729 else if (!list_empty(&priv->cmdpendingq))
730 shouldsleep = 0; /* We have a command to send */
731 else if (__kfifo_len(priv->event_fifo))
732 shouldsleep = 0; /* We have an event to process */
733 else
734 shouldsleep = 1; /* No command */
735
736 if (shouldsleep) {
737 lbs_deb_thread("sleeping, connect_status %d, "
738 "psmode %d, psstate %d\n",
739 priv->connect_status,
740 priv->psmode, priv->psstate);
741 spin_unlock_irq(&priv->driver_lock);
742 schedule();
743 } else
744 spin_unlock_irq(&priv->driver_lock);
745
746 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
747 priv->currenttxskb, priv->dnld_sent);
748
749 set_current_state(TASK_RUNNING);
750 remove_wait_queue(&priv->waitq, &wait);
751
752 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
753 priv->currenttxskb, priv->dnld_sent);
754
755 if (kthread_should_stop()) {
756 lbs_deb_thread("break from main thread\n");
757 break;
758 }
759
760 if (priv->surpriseremoved) {
761 lbs_deb_thread("adapter removed; waiting to die...\n");
762 continue;
763 }
764
765 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
766 priv->currenttxskb, priv->dnld_sent);
767
768 spin_lock_irq(&priv->driver_lock);
769 /* Process any pending command response */
770 resp_idx = priv->resp_idx;
771 if (priv->resp_len[resp_idx]) {
772 spin_unlock_irq(&priv->driver_lock);
773 lbs_process_command_response(priv,
774 priv->resp_buf[resp_idx],
775 priv->resp_len[resp_idx]);
776 spin_lock_irq(&priv->driver_lock);
777 priv->resp_len[resp_idx] = 0;
778 }
779 spin_unlock_irq(&priv->driver_lock);
780
781 /* command timeout stuff */
782 if (priv->cmd_timed_out && priv->cur_cmd) {
783 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
784
785 if (++priv->nr_retries > 3) {
786 lbs_pr_info("Excessive timeouts submitting "
787 "command 0x%04x\n",
788 le16_to_cpu(cmdnode->cmdbuf->command));
789 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
790 priv->nr_retries = 0;
791 if (priv->reset_card)
792 priv->reset_card(priv);
793 } else {
794 priv->cur_cmd = NULL;
795 lbs_pr_info("requeueing command 0x%04x due "
796 "to timeout (#%d)\n",
797 le16_to_cpu(cmdnode->cmdbuf->command),
798 priv->nr_retries);
799
800 /* Stick it back at the _top_ of the pending queue
801 for immediate resubmission */
802 list_add(&cmdnode->list, &priv->cmdpendingq);
803 }
804 }
805 priv->cmd_timed_out = 0;
806
807 /* Process hardware events, e.g. card removed, link lost */
808 spin_lock_irq(&priv->driver_lock);
809 while (__kfifo_len(priv->event_fifo)) {
810 u32 event;
811
812 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
813 sizeof(event));
814 spin_unlock_irq(&priv->driver_lock);
815 lbs_process_event(priv, event);
816 spin_lock_irq(&priv->driver_lock);
817 }
818 spin_unlock_irq(&priv->driver_lock);
819
820 if (!priv->fw_ready)
821 continue;
822
823 /* Check if we need to confirm Sleep Request received previously */
824 if (priv->psstate == PS_STATE_PRE_SLEEP &&
825 !priv->dnld_sent && !priv->cur_cmd) {
826 if (priv->connect_status == LBS_CONNECTED) {
827 lbs_deb_thread("pre-sleep, currenttxskb %p, "
828 "dnld_sent %d, cur_cmd %p\n",
829 priv->currenttxskb, priv->dnld_sent,
830 priv->cur_cmd);
831
832 lbs_ps_confirm_sleep(priv);
833 } else {
834 /* workaround for firmware sending
835 * deauth/linkloss event immediately
836 * after sleep request; remove this
837 * after firmware fixes it
838 */
839 priv->psstate = PS_STATE_AWAKE;
840 lbs_pr_alert("ignore PS_SleepConfirm in "
841 "non-connected state\n");
842 }
843 }
844
845 /* The PS state is changed during processing of Sleep Request
846 * event above
847 */
848 if ((priv->psstate == PS_STATE_SLEEP) ||
849 (priv->psstate == PS_STATE_PRE_SLEEP))
850 continue;
851
852 /* Execute the next command */
853 if (!priv->dnld_sent && !priv->cur_cmd)
854 lbs_execute_next_command(priv);
855
856 /* Wake-up command waiters which can't sleep in
857 * lbs_prepare_and_send_command
858 */
859 if (!list_empty(&priv->cmdpendingq))
860 wake_up_all(&priv->cmd_pending);
861
862 spin_lock_irq(&priv->driver_lock);
863 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
864 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
865 priv->tx_pending_buf,
866 priv->tx_pending_len);
867 if (ret) {
868 lbs_deb_tx("host_to_card failed %d\n", ret);
869 priv->dnld_sent = DNLD_RES_RECEIVED;
870 }
871 priv->tx_pending_len = 0;
872 if (!priv->currenttxskb) {
873 /* We can wake the queues immediately if we aren't
874 waiting for TX feedback */
875 if (priv->connect_status == LBS_CONNECTED)
876 netif_wake_queue(priv->dev);
877 if (priv->mesh_dev &&
878 priv->mesh_connect_status == LBS_CONNECTED)
879 netif_wake_queue(priv->mesh_dev);
880 }
881 }
882 spin_unlock_irq(&priv->driver_lock);
883 }
884
885 del_timer(&priv->command_timer);
886 wake_up_all(&priv->cmd_pending);
887
888 lbs_deb_leave(LBS_DEB_THREAD);
889 return 0;
890 }
891
892 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
893 struct cmd_header *cmd)
894 {
895 lbs_deb_enter(LBS_DEB_FW);
896
897 netif_device_detach(priv->dev);
898 if (priv->mesh_dev)
899 netif_device_detach(priv->mesh_dev);
900
901 priv->fw_ready = 0;
902 lbs_deb_leave(LBS_DEB_FW);
903 return 0;
904 }
905
906 int lbs_suspend(struct lbs_private *priv)
907 {
908 struct cmd_header cmd;
909 int ret;
910
911 lbs_deb_enter(LBS_DEB_FW);
912
913 if (priv->wol_criteria == 0xffffffff) {
914 lbs_pr_info("Suspend attempt without configuring wake params!\n");
915 return -EINVAL;
916 }
917
918 memset(&cmd, 0, sizeof(cmd));
919
920 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
921 sizeof(cmd), lbs_suspend_callback, 0);
922 if (ret)
923 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
924
925 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
926 return ret;
927 }
928 EXPORT_SYMBOL_GPL(lbs_suspend);
929
930 void lbs_resume(struct lbs_private *priv)
931 {
932 lbs_deb_enter(LBS_DEB_FW);
933
934 priv->fw_ready = 1;
935
936 /* Firmware doesn't seem to give us RX packets any more
937 until we send it some command. Might as well update */
938 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
939 0, 0, NULL);
940
941 netif_device_attach(priv->dev);
942 if (priv->mesh_dev)
943 netif_device_attach(priv->mesh_dev);
944
945 lbs_deb_leave(LBS_DEB_FW);
946 }
947 EXPORT_SYMBOL_GPL(lbs_resume);
948
949 /**
950 * @brief This function downloads firmware image, gets
951 * HW spec from firmware and set basic parameters to
952 * firmware.
953 *
954 * @param priv A pointer to struct lbs_private structure
955 * @return 0 or -1
956 */
957 static int lbs_setup_firmware(struct lbs_private *priv)
958 {
959 int ret = -1;
960
961 lbs_deb_enter(LBS_DEB_FW);
962
963 /*
964 * Read MAC address from HW
965 */
966 memset(priv->current_addr, 0xff, ETH_ALEN);
967 ret = lbs_update_hw_spec(priv);
968 if (ret)
969 goto done;
970
971 lbs_set_mac_control(priv);
972 done:
973 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
974 return ret;
975 }
976
977 /**
978 * This function handles the timeout of command sending.
979 * It will re-send the same command again.
980 */
981 static void command_timer_fn(unsigned long data)
982 {
983 struct lbs_private *priv = (struct lbs_private *)data;
984 unsigned long flags;
985
986 lbs_deb_enter(LBS_DEB_CMD);
987 spin_lock_irqsave(&priv->driver_lock, flags);
988
989 if (!priv->cur_cmd)
990 goto out;
991
992 lbs_pr_info("command 0x%04x timed out\n",
993 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
994
995 priv->cmd_timed_out = 1;
996 wake_up_interruptible(&priv->waitq);
997 out:
998 spin_unlock_irqrestore(&priv->driver_lock, flags);
999 lbs_deb_leave(LBS_DEB_CMD);
1000 }
1001
1002 static void lbs_sync_channel_worker(struct work_struct *work)
1003 {
1004 struct lbs_private *priv = container_of(work, struct lbs_private,
1005 sync_channel);
1006
1007 lbs_deb_enter(LBS_DEB_MAIN);
1008 if (lbs_update_channel(priv))
1009 lbs_pr_info("Channel synchronization failed.");
1010 lbs_deb_leave(LBS_DEB_MAIN);
1011 }
1012
1013
1014 static int lbs_init_adapter(struct lbs_private *priv)
1015 {
1016 size_t bufsize;
1017 int i, ret = 0;
1018
1019 lbs_deb_enter(LBS_DEB_MAIN);
1020
1021 /* Allocate buffer to store the BSSID list */
1022 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1023 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1024 if (!priv->networks) {
1025 lbs_pr_err("Out of memory allocating beacons\n");
1026 ret = -1;
1027 goto out;
1028 }
1029
1030 /* Initialize scan result lists */
1031 INIT_LIST_HEAD(&priv->network_free_list);
1032 INIT_LIST_HEAD(&priv->network_list);
1033 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1034 list_add_tail(&priv->networks[i].list,
1035 &priv->network_free_list);
1036 }
1037
1038 memset(priv->current_addr, 0xff, ETH_ALEN);
1039
1040 priv->connect_status = LBS_DISCONNECTED;
1041 priv->mesh_connect_status = LBS_DISCONNECTED;
1042 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1043 priv->mode = IW_MODE_INFRA;
1044 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1045 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1046 priv->radioon = RADIO_ON;
1047 priv->auto_rate = 1;
1048 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1049 priv->psmode = LBS802_11POWERMODECAM;
1050 priv->psstate = PS_STATE_FULL_POWER;
1051
1052 mutex_init(&priv->lock);
1053
1054 setup_timer(&priv->command_timer, command_timer_fn,
1055 (unsigned long)priv);
1056
1057 INIT_LIST_HEAD(&priv->cmdfreeq);
1058 INIT_LIST_HEAD(&priv->cmdpendingq);
1059
1060 spin_lock_init(&priv->driver_lock);
1061 init_waitqueue_head(&priv->cmd_pending);
1062
1063 /* Allocate the command buffers */
1064 if (lbs_allocate_cmd_buffer(priv)) {
1065 lbs_pr_err("Out of memory allocating command buffers\n");
1066 ret = -ENOMEM;
1067 goto out;
1068 }
1069 priv->resp_idx = 0;
1070 priv->resp_len[0] = priv->resp_len[1] = 0;
1071
1072 /* Create the event FIFO */
1073 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1074 if (IS_ERR(priv->event_fifo)) {
1075 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1076 ret = -ENOMEM;
1077 goto out;
1078 }
1079
1080 out:
1081 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1082
1083 return ret;
1084 }
1085
1086 static void lbs_free_adapter(struct lbs_private *priv)
1087 {
1088 lbs_deb_enter(LBS_DEB_MAIN);
1089
1090 lbs_free_cmd_buffer(priv);
1091 if (priv->event_fifo)
1092 kfifo_free(priv->event_fifo);
1093 del_timer(&priv->command_timer);
1094 kfree(priv->networks);
1095 priv->networks = NULL;
1096
1097 lbs_deb_leave(LBS_DEB_MAIN);
1098 }
1099
1100 /**
1101 * @brief This function adds the card. it will probe the
1102 * card, allocate the lbs_priv and initialize the device.
1103 *
1104 * @param card A pointer to card
1105 * @return A pointer to struct lbs_private structure
1106 */
1107 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1108 {
1109 struct net_device *dev = NULL;
1110 struct lbs_private *priv = NULL;
1111
1112 lbs_deb_enter(LBS_DEB_MAIN);
1113
1114 /* Allocate an Ethernet device and register it */
1115 dev = alloc_etherdev(sizeof(struct lbs_private));
1116 if (!dev) {
1117 lbs_pr_err("init ethX device failed\n");
1118 goto done;
1119 }
1120 priv = dev->priv;
1121
1122 if (lbs_init_adapter(priv)) {
1123 lbs_pr_err("failed to initialize adapter structure.\n");
1124 goto err_init_adapter;
1125 }
1126
1127 priv->dev = dev;
1128 priv->card = card;
1129 priv->mesh_open = 0;
1130 priv->infra_open = 0;
1131
1132 /* Setup the OS Interface to our functions */
1133 dev->open = lbs_dev_open;
1134 dev->hard_start_xmit = lbs_hard_start_xmit;
1135 dev->stop = lbs_eth_stop;
1136 dev->set_mac_address = lbs_set_mac_address;
1137 dev->tx_timeout = lbs_tx_timeout;
1138 dev->get_stats = lbs_get_stats;
1139 dev->watchdog_timeo = 5 * HZ;
1140 dev->ethtool_ops = &lbs_ethtool_ops;
1141 #ifdef WIRELESS_EXT
1142 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1143 #endif
1144 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1145 dev->set_multicast_list = lbs_set_multicast_list;
1146
1147 SET_NETDEV_DEV(dev, dmdev);
1148
1149 priv->rtap_net_dev = NULL;
1150
1151 lbs_deb_thread("Starting main thread...\n");
1152 init_waitqueue_head(&priv->waitq);
1153 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1154 if (IS_ERR(priv->main_thread)) {
1155 lbs_deb_thread("Error creating main thread.\n");
1156 goto err_init_adapter;
1157 }
1158
1159 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1160 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1161 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1162 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1163 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1164
1165 sprintf(priv->mesh_ssid, "mesh");
1166 priv->mesh_ssid_len = 4;
1167
1168 priv->wol_criteria = 0xffffffff;
1169 priv->wol_gpio = 0xff;
1170
1171 goto done;
1172
1173 err_init_adapter:
1174 lbs_free_adapter(priv);
1175 free_netdev(dev);
1176 priv = NULL;
1177
1178 done:
1179 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1180 return priv;
1181 }
1182 EXPORT_SYMBOL_GPL(lbs_add_card);
1183
1184
1185 void lbs_remove_card(struct lbs_private *priv)
1186 {
1187 struct net_device *dev = priv->dev;
1188 union iwreq_data wrqu;
1189
1190 lbs_deb_enter(LBS_DEB_MAIN);
1191
1192 lbs_remove_mesh(priv);
1193 lbs_remove_rtap(priv);
1194
1195 dev = priv->dev;
1196
1197 cancel_delayed_work_sync(&priv->scan_work);
1198 cancel_delayed_work_sync(&priv->assoc_work);
1199 cancel_work_sync(&priv->mcast_work);
1200 destroy_workqueue(priv->work_thread);
1201
1202 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1203 priv->psmode = LBS802_11POWERMODECAM;
1204 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1205 }
1206
1207 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1208 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1209 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1210
1211 /* Stop the thread servicing the interrupts */
1212 priv->surpriseremoved = 1;
1213 kthread_stop(priv->main_thread);
1214
1215 lbs_free_adapter(priv);
1216
1217 priv->dev = NULL;
1218 free_netdev(dev);
1219
1220 lbs_deb_leave(LBS_DEB_MAIN);
1221 }
1222 EXPORT_SYMBOL_GPL(lbs_remove_card);
1223
1224
1225 int lbs_start_card(struct lbs_private *priv)
1226 {
1227 struct net_device *dev = priv->dev;
1228 int ret = -1;
1229
1230 lbs_deb_enter(LBS_DEB_MAIN);
1231
1232 /* poke the firmware */
1233 ret = lbs_setup_firmware(priv);
1234 if (ret)
1235 goto done;
1236
1237 /* init 802.11d */
1238 lbs_init_11d(priv);
1239
1240 if (register_netdev(dev)) {
1241 lbs_pr_err("cannot register ethX device\n");
1242 goto done;
1243 }
1244 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1245 lbs_pr_err("cannot register lbs_rtap attribute\n");
1246
1247 lbs_update_channel(priv);
1248
1249 /* 5.0.16p0 is known to NOT support any mesh */
1250 if (priv->fwrelease > 0x05001000) {
1251 /* Enable mesh, if supported, and work out which TLV it uses.
1252 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1253 0x100 + 37 is the official value used in 5.110.21.pXX
1254 but we check them in that order because 20.pXX doesn't
1255 give an error -- it just silently fails. */
1256
1257 /* 5.110.20.pXX firmware will fail the command if the channel
1258 doesn't match the existing channel. But only if the TLV
1259 is correct. If the channel is wrong, _BOTH_ versions will
1260 give an error to 0x100+291, and allow 0x100+37 to succeed.
1261 It's just that 5.110.20.pXX will not have done anything
1262 useful */
1263
1264 priv->mesh_tlv = 0x100 + 291;
1265 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1266 priv->curbssparams.channel)) {
1267 priv->mesh_tlv = 0x100 + 37;
1268 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1269 priv->curbssparams.channel))
1270 priv->mesh_tlv = 0;
1271 }
1272 if (priv->mesh_tlv) {
1273 lbs_add_mesh(priv);
1274
1275 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1276 lbs_pr_err("cannot register lbs_mesh attribute\n");
1277 }
1278 }
1279
1280 lbs_debugfs_init_one(priv, dev);
1281
1282 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1283
1284 ret = 0;
1285
1286 done:
1287 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1288 return ret;
1289 }
1290 EXPORT_SYMBOL_GPL(lbs_start_card);
1291
1292
1293 void lbs_stop_card(struct lbs_private *priv)
1294 {
1295 struct net_device *dev = priv->dev;
1296 struct cmd_ctrl_node *cmdnode;
1297 unsigned long flags;
1298
1299 lbs_deb_enter(LBS_DEB_MAIN);
1300
1301 if (!priv)
1302 goto out;
1303
1304 netif_stop_queue(priv->dev);
1305 netif_carrier_off(priv->dev);
1306
1307 lbs_debugfs_remove_one(priv);
1308 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1309 if (priv->mesh_tlv) {
1310 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1311 }
1312
1313 /* Flush pending command nodes */
1314 del_timer_sync(&priv->command_timer);
1315 spin_lock_irqsave(&priv->driver_lock, flags);
1316 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1317 cmdnode->result = -ENOENT;
1318 cmdnode->cmdwaitqwoken = 1;
1319 wake_up_interruptible(&cmdnode->cmdwait_q);
1320 }
1321 spin_unlock_irqrestore(&priv->driver_lock, flags);
1322
1323 unregister_netdev(dev);
1324
1325 out:
1326 lbs_deb_leave(LBS_DEB_MAIN);
1327 }
1328 EXPORT_SYMBOL_GPL(lbs_stop_card);
1329
1330
1331 /**
1332 * @brief This function adds mshX interface
1333 *
1334 * @param priv A pointer to the struct lbs_private structure
1335 * @return 0 if successful, -X otherwise
1336 */
1337 static int lbs_add_mesh(struct lbs_private *priv)
1338 {
1339 struct net_device *mesh_dev = NULL;
1340 int ret = 0;
1341
1342 lbs_deb_enter(LBS_DEB_MESH);
1343
1344 /* Allocate a virtual mesh device */
1345 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1346 lbs_deb_mesh("init mshX device failed\n");
1347 ret = -ENOMEM;
1348 goto done;
1349 }
1350 mesh_dev->priv = priv;
1351 priv->mesh_dev = mesh_dev;
1352
1353 mesh_dev->open = lbs_dev_open;
1354 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1355 mesh_dev->stop = lbs_mesh_stop;
1356 mesh_dev->get_stats = lbs_get_stats;
1357 mesh_dev->set_mac_address = lbs_set_mac_address;
1358 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1359 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1360 sizeof(priv->dev->dev_addr));
1361
1362 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1363
1364 #ifdef WIRELESS_EXT
1365 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1366 #endif
1367 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1368 mesh_dev->set_multicast_list = lbs_set_multicast_list;
1369 /* Register virtual mesh interface */
1370 ret = register_netdev(mesh_dev);
1371 if (ret) {
1372 lbs_pr_err("cannot register mshX virtual interface\n");
1373 goto err_free;
1374 }
1375
1376 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1377 if (ret)
1378 goto err_unregister;
1379
1380 lbs_persist_config_init(mesh_dev);
1381
1382 /* Everything successful */
1383 ret = 0;
1384 goto done;
1385
1386 err_unregister:
1387 unregister_netdev(mesh_dev);
1388
1389 err_free:
1390 free_netdev(mesh_dev);
1391
1392 done:
1393 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1394 return ret;
1395 }
1396
1397 static void lbs_remove_mesh(struct lbs_private *priv)
1398 {
1399 struct net_device *mesh_dev;
1400
1401
1402 mesh_dev = priv->mesh_dev;
1403 if (!mesh_dev)
1404 return;
1405
1406 lbs_deb_enter(LBS_DEB_MESH);
1407 netif_stop_queue(mesh_dev);
1408 netif_carrier_off(mesh_dev);
1409 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1410 lbs_persist_config_remove(mesh_dev);
1411 unregister_netdev(mesh_dev);
1412 priv->mesh_dev = NULL;
1413 free_netdev(mesh_dev);
1414 lbs_deb_leave(LBS_DEB_MESH);
1415 }
1416
1417 /**
1418 * @brief This function finds the CFP in
1419 * region_cfp_table based on region and band parameter.
1420 *
1421 * @param region The region code
1422 * @param band The band
1423 * @param cfp_no A pointer to CFP number
1424 * @return A pointer to CFP
1425 */
1426 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1427 {
1428 int i, end;
1429
1430 lbs_deb_enter(LBS_DEB_MAIN);
1431
1432 end = ARRAY_SIZE(region_cfp_table);
1433
1434 for (i = 0; i < end ; i++) {
1435 lbs_deb_main("region_cfp_table[i].region=%d\n",
1436 region_cfp_table[i].region);
1437 if (region_cfp_table[i].region == region) {
1438 *cfp_no = region_cfp_table[i].cfp_no_BG;
1439 lbs_deb_leave(LBS_DEB_MAIN);
1440 return region_cfp_table[i].cfp_BG;
1441 }
1442 }
1443
1444 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1445 return NULL;
1446 }
1447
1448 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1449 {
1450 int ret = 0;
1451 int i = 0;
1452
1453 struct chan_freq_power *cfp;
1454 int cfp_no;
1455
1456 lbs_deb_enter(LBS_DEB_MAIN);
1457
1458 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1459
1460 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1461 if (cfp != NULL) {
1462 priv->region_channel[i].nrcfp = cfp_no;
1463 priv->region_channel[i].CFP = cfp;
1464 } else {
1465 lbs_deb_main("wrong region code %#x in band B/G\n",
1466 region);
1467 ret = -1;
1468 goto out;
1469 }
1470 priv->region_channel[i].valid = 1;
1471 priv->region_channel[i].region = region;
1472 priv->region_channel[i].band = band;
1473 i++;
1474 out:
1475 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1476 return ret;
1477 }
1478
1479 void lbs_queue_event(struct lbs_private *priv, u32 event)
1480 {
1481 unsigned long flags;
1482
1483 lbs_deb_enter(LBS_DEB_THREAD);
1484 spin_lock_irqsave(&priv->driver_lock, flags);
1485
1486 if (priv->psstate == PS_STATE_SLEEP)
1487 priv->psstate = PS_STATE_AWAKE;
1488
1489 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1490
1491 wake_up_interruptible(&priv->waitq);
1492
1493 spin_unlock_irqrestore(&priv->driver_lock, flags);
1494 lbs_deb_leave(LBS_DEB_THREAD);
1495 }
1496 EXPORT_SYMBOL_GPL(lbs_queue_event);
1497
1498 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1499 {
1500 lbs_deb_enter(LBS_DEB_THREAD);
1501
1502 if (priv->psstate == PS_STATE_SLEEP)
1503 priv->psstate = PS_STATE_AWAKE;
1504
1505 /* Swap buffers by flipping the response index */
1506 BUG_ON(resp_idx > 1);
1507 priv->resp_idx = resp_idx;
1508
1509 wake_up_interruptible(&priv->waitq);
1510
1511 lbs_deb_leave(LBS_DEB_THREAD);
1512 }
1513 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1514
1515 static int __init lbs_init_module(void)
1516 {
1517 lbs_deb_enter(LBS_DEB_MAIN);
1518 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1519 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1520 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1521 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1522 lbs_debugfs_init();
1523 lbs_deb_leave(LBS_DEB_MAIN);
1524 return 0;
1525 }
1526
1527 static void __exit lbs_exit_module(void)
1528 {
1529 lbs_deb_enter(LBS_DEB_MAIN);
1530 lbs_debugfs_remove();
1531 lbs_deb_leave(LBS_DEB_MAIN);
1532 }
1533
1534 /*
1535 * rtap interface support fuctions
1536 */
1537
1538 static int lbs_rtap_open(struct net_device *dev)
1539 {
1540 /* Yes, _stop_ the queue. Because we don't support injection */
1541 lbs_deb_enter(LBS_DEB_MAIN);
1542 netif_carrier_off(dev);
1543 netif_stop_queue(dev);
1544 lbs_deb_leave(LBS_DEB_LEAVE);
1545 return 0;
1546 }
1547
1548 static int lbs_rtap_stop(struct net_device *dev)
1549 {
1550 lbs_deb_enter(LBS_DEB_MAIN);
1551 lbs_deb_leave(LBS_DEB_MAIN);
1552 return 0;
1553 }
1554
1555 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1556 {
1557 netif_stop_queue(dev);
1558 return NETDEV_TX_BUSY;
1559 }
1560
1561 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1562 {
1563 struct lbs_private *priv = dev->priv;
1564 lbs_deb_enter(LBS_DEB_NET);
1565 return &priv->stats;
1566 }
1567
1568
1569 static void lbs_remove_rtap(struct lbs_private *priv)
1570 {
1571 lbs_deb_enter(LBS_DEB_MAIN);
1572 if (priv->rtap_net_dev == NULL)
1573 goto out;
1574 unregister_netdev(priv->rtap_net_dev);
1575 free_netdev(priv->rtap_net_dev);
1576 priv->rtap_net_dev = NULL;
1577 out:
1578 lbs_deb_leave(LBS_DEB_MAIN);
1579 }
1580
1581 static int lbs_add_rtap(struct lbs_private *priv)
1582 {
1583 int ret = 0;
1584 struct net_device *rtap_dev;
1585
1586 lbs_deb_enter(LBS_DEB_MAIN);
1587 if (priv->rtap_net_dev) {
1588 ret = -EPERM;
1589 goto out;
1590 }
1591
1592 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1593 if (rtap_dev == NULL) {
1594 ret = -ENOMEM;
1595 goto out;
1596 }
1597
1598 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1599 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1600 rtap_dev->open = lbs_rtap_open;
1601 rtap_dev->stop = lbs_rtap_stop;
1602 rtap_dev->get_stats = lbs_rtap_get_stats;
1603 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1604 rtap_dev->priv = priv;
1605
1606 ret = register_netdev(rtap_dev);
1607 if (ret) {
1608 free_netdev(rtap_dev);
1609 goto out;
1610 }
1611 priv->rtap_net_dev = rtap_dev;
1612
1613 out:
1614 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1615 return ret;
1616 }
1617
1618 #ifndef CONFIG_IEEE80211
1619 const char *escape_essid(const char *essid, u8 essid_len)
1620 {
1621 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1622 const char *s = essid;
1623 char *d = escaped;
1624
1625 if (ieee80211_is_empty_essid(essid, essid_len)) {
1626 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1627 return escaped;
1628 }
1629
1630 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1631 while (essid_len--) {
1632 if (*s == '\0') {
1633 *d++ = '\\';
1634 *d++ = '0';
1635 s++;
1636 } else {
1637 *d++ = *s++;
1638 }
1639 }
1640 *d = '\0';
1641 return escaped;
1642 }
1643 #endif
1644
1645 module_init(lbs_init_module);
1646 module_exit(lbs_exit_module);
1647
1648 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1649 MODULE_AUTHOR("Marvell International Ltd.");
1650 MODULE_LICENSE("GPL");
AMDTP streaming driver for the Linux FireWire stack (Juju)