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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / drivers / net / wireless / libertas / main.c
blob406f54d409563ec85ccecdd5e665dc44d21e01c1
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
15 #include <net/iw_handler.h>
16 #include <net/ieee80211.h>
17
18 #include "host.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "wext.h"
22 #include "debugfs.h"
23 #include "scan.h"
24 #include "assoc.h"
25 #include "cmd.h"
26
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29 #ifdef DEBUG
30 "-dbg"
31 #endif
32 "";
33
34
35 /* Module parameters */
36 unsigned int lbs_debug;
37 EXPORT_SYMBOL_GPL(lbs_debug);
38 module_param_named(libertas_debug, lbs_debug, int, 0644);
39
40
41 /* This global structure is used to send the confirm_sleep command as
42 * fast as possible down to the firmware. */
43 struct cmd_confirm_sleep confirm_sleep;
44
45
46 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
47 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
48 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
49 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
50 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
51
52 /* Format { channel, frequency (MHz), maxtxpower } */
53 /* band: 'B/G', region: USA FCC/Canada IC */
54 static struct chan_freq_power channel_freq_power_US_BG[] = {
55 {1, 2412, LBS_TX_PWR_US_DEFAULT},
56 {2, 2417, LBS_TX_PWR_US_DEFAULT},
57 {3, 2422, LBS_TX_PWR_US_DEFAULT},
58 {4, 2427, LBS_TX_PWR_US_DEFAULT},
59 {5, 2432, LBS_TX_PWR_US_DEFAULT},
60 {6, 2437, LBS_TX_PWR_US_DEFAULT},
61 {7, 2442, LBS_TX_PWR_US_DEFAULT},
62 {8, 2447, LBS_TX_PWR_US_DEFAULT},
63 {9, 2452, LBS_TX_PWR_US_DEFAULT},
64 {10, 2457, LBS_TX_PWR_US_DEFAULT},
65 {11, 2462, LBS_TX_PWR_US_DEFAULT}
66 };
67
68 /* band: 'B/G', region: Europe ETSI */
69 static struct chan_freq_power channel_freq_power_EU_BG[] = {
70 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
71 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
72 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
73 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
74 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
75 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
76 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
77 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
78 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
79 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
80 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
81 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
82 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
83 };
84
85 /* band: 'B/G', region: Spain */
86 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
87 {10, 2457, LBS_TX_PWR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_DEFAULT}
89 };
90
91 /* band: 'B/G', region: France */
92 static struct chan_freq_power channel_freq_power_FR_BG[] = {
93 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
94 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
95 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
96 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
97 };
98
99 /* band: 'B/G', region: Japan */
100 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
101 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
102 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
103 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
104 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
105 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
106 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
107 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
108 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
109 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
110 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
111 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
112 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
113 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
114 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
115 };
116
117 /**
118 * the structure for channel, frequency and power
119 */
120 struct region_cfp_table {
121 u8 region;
122 struct chan_freq_power *cfp_BG;
123 int cfp_no_BG;
124 };
125
126 /**
127 * the structure for the mapping between region and CFP
128 */
129 static struct region_cfp_table region_cfp_table[] = {
130 {0x10, /*US FCC */
131 channel_freq_power_US_BG,
132 ARRAY_SIZE(channel_freq_power_US_BG),
133 }
134 ,
135 {0x20, /*CANADA IC */
136 channel_freq_power_US_BG,
137 ARRAY_SIZE(channel_freq_power_US_BG),
138 }
139 ,
140 {0x30, /*EU*/ channel_freq_power_EU_BG,
141 ARRAY_SIZE(channel_freq_power_EU_BG),
142 }
143 ,
144 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
145 ARRAY_SIZE(channel_freq_power_SPN_BG),
146 }
147 ,
148 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
149 ARRAY_SIZE(channel_freq_power_FR_BG),
150 }
151 ,
152 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
153 ARRAY_SIZE(channel_freq_power_JPN_BG),
154 }
155 ,
156 /*Add new region here */
157 };
158
159 /**
160 * the table to keep region code
161 */
162 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
163 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
164
165 /**
166 * 802.11b/g supported bitrates (in 500Kb/s units)
167 */
168 u8 lbs_bg_rates[MAX_RATES] =
169 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
170 0x00, 0x00 };
171
172 /**
173 * FW rate table. FW refers to rates by their index in this table, not by the
174 * rate value itself. Values of 0x00 are
175 * reserved positions.
176 */
177 static u8 fw_data_rates[MAX_RATES] =
178 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
179 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
180 };
181
182 /**
183 * @brief use index to get the data rate
184 *
185 * @param idx The index of data rate
186 * @return data rate or 0
187 */
188 u32 lbs_fw_index_to_data_rate(u8 idx)
189 {
190 if (idx >= sizeof(fw_data_rates))
191 idx = 0;
192 return fw_data_rates[idx];
193 }
194
195 /**
196 * @brief use rate to get the index
197 *
198 * @param rate data rate
199 * @return index or 0
200 */
201 u8 lbs_data_rate_to_fw_index(u32 rate)
202 {
203 u8 i;
204
205 if (!rate)
206 return 0;
207
208 for (i = 0; i < sizeof(fw_data_rates); i++) {
209 if (rate == fw_data_rates[i])
210 return i;
211 }
212 return 0;
213 }
214
215 /**
216 * Attributes exported through sysfs
217 */
218
219 /**
220 * @brief Get function for sysfs attribute anycast_mask
221 */
222 static ssize_t lbs_anycast_get(struct device *dev,
223 struct device_attribute *attr, char * buf)
224 {
225 struct lbs_private *priv = to_net_dev(dev)->priv;
226 struct cmd_ds_mesh_access mesh_access;
227 int ret;
228
229 memset(&mesh_access, 0, sizeof(mesh_access));
230
231 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
232 if (ret)
233 return ret;
234
235 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
236 }
237
238 /**
239 * @brief Set function for sysfs attribute anycast_mask
240 */
241 static ssize_t lbs_anycast_set(struct device *dev,
242 struct device_attribute *attr, const char * buf, size_t count)
243 {
244 struct lbs_private *priv = to_net_dev(dev)->priv;
245 struct cmd_ds_mesh_access mesh_access;
246 uint32_t datum;
247 int ret;
248
249 memset(&mesh_access, 0, sizeof(mesh_access));
250 sscanf(buf, "%x", &datum);
251 mesh_access.data[0] = cpu_to_le32(datum);
252
253 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
254 if (ret)
255 return ret;
256
257 return strlen(buf);
258 }
259
260 static int lbs_add_rtap(struct lbs_private *priv);
261 static void lbs_remove_rtap(struct lbs_private *priv);
262 static int lbs_add_mesh(struct lbs_private *priv);
263 static void lbs_remove_mesh(struct lbs_private *priv);
264
265
266 /**
267 * Get function for sysfs attribute rtap
268 */
269 static ssize_t lbs_rtap_get(struct device *dev,
270 struct device_attribute *attr, char * buf)
271 {
272 struct lbs_private *priv = to_net_dev(dev)->priv;
273 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
274 }
275
276 /**
277 * Set function for sysfs attribute rtap
278 */
279 static ssize_t lbs_rtap_set(struct device *dev,
280 struct device_attribute *attr, const char * buf, size_t count)
281 {
282 int monitor_mode;
283 struct lbs_private *priv = to_net_dev(dev)->priv;
284
285 sscanf(buf, "%x", &monitor_mode);
286 if (monitor_mode) {
287 if (priv->monitormode == monitor_mode)
288 return strlen(buf);
289 if (!priv->monitormode) {
290 if (priv->infra_open || priv->mesh_open)
291 return -EBUSY;
292 if (priv->mode == IW_MODE_INFRA)
293 lbs_send_deauthentication(priv);
294 else if (priv->mode == IW_MODE_ADHOC)
295 lbs_stop_adhoc_network(priv);
296 lbs_add_rtap(priv);
297 }
298 priv->monitormode = monitor_mode;
299 }
300
301 else {
302 if (!priv->monitormode)
303 return strlen(buf);
304 priv->monitormode = 0;
305 lbs_remove_rtap(priv);
306
307 if (priv->currenttxskb) {
308 dev_kfree_skb_any(priv->currenttxskb);
309 priv->currenttxskb = NULL;
310 }
311
312 /* Wake queues, command thread, etc. */
313 lbs_host_to_card_done(priv);
314 }
315
316 lbs_prepare_and_send_command(priv,
317 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
318 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
319 return strlen(buf);
320 }
321
322 /**
323 * lbs_rtap attribute to be exported per ethX interface
324 * through sysfs (/sys/class/net/ethX/lbs_rtap)
325 */
326 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
327
328 /**
329 * Get function for sysfs attribute mesh
330 */
331 static ssize_t lbs_mesh_get(struct device *dev,
332 struct device_attribute *attr, char * buf)
333 {
334 struct lbs_private *priv = to_net_dev(dev)->priv;
335 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
336 }
337
338 /**
339 * Set function for sysfs attribute mesh
340 */
341 static ssize_t lbs_mesh_set(struct device *dev,
342 struct device_attribute *attr, const char * buf, size_t count)
343 {
344 struct lbs_private *priv = to_net_dev(dev)->priv;
345 int enable;
346 int ret;
347
348 sscanf(buf, "%x", &enable);
349 enable = !!enable;
350 if (enable == !!priv->mesh_dev)
351 return count;
352
353 ret = lbs_mesh_config(priv, enable, 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 lbs_deb_leave(LBS_DEB_MESH);
450 return 0;
451 }
452
453 /**
454 * @brief This function closes the ethX interface
455 *
456 * @param dev A pointer to net_device structure
457 * @return 0
458 */
459 static int lbs_eth_stop(struct net_device *dev)
460 {
461 struct lbs_private *priv = (struct lbs_private *) dev->priv;
462
463 lbs_deb_enter(LBS_DEB_NET);
464
465 spin_lock_irq(&priv->driver_lock);
466 priv->infra_open = 0;
467 netif_stop_queue(dev);
468 spin_unlock_irq(&priv->driver_lock);
469
470 lbs_deb_leave(LBS_DEB_NET);
471 return 0;
472 }
473
474 static void lbs_tx_timeout(struct net_device *dev)
475 {
476 struct lbs_private *priv = (struct lbs_private *) dev->priv;
477
478 lbs_deb_enter(LBS_DEB_TX);
479
480 lbs_pr_err("tx watch dog timeout\n");
481
482 dev->trans_start = jiffies;
483
484 if (priv->currenttxskb)
485 lbs_send_tx_feedback(priv, 0);
486
487 /* XX: Shouldn't we also call into the hw-specific driver
488 to kick it somehow? */
489 lbs_host_to_card_done(priv);
490
491 /* More often than not, this actually happens because the
492 firmware has crapped itself -- rather than just a very
493 busy medium. So send a harmless command, and if/when
494 _that_ times out, we'll kick it in the head. */
495 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
496 0, 0, NULL);
497
498 lbs_deb_leave(LBS_DEB_TX);
499 }
500
501 void lbs_host_to_card_done(struct lbs_private *priv)
502 {
503 unsigned long flags;
504
505 lbs_deb_enter(LBS_DEB_THREAD);
506
507 spin_lock_irqsave(&priv->driver_lock, flags);
508
509 priv->dnld_sent = DNLD_RES_RECEIVED;
510
511 /* Wake main thread if commands are pending */
512 if (!priv->cur_cmd || priv->tx_pending_len > 0)
513 wake_up_interruptible(&priv->waitq);
514
515 spin_unlock_irqrestore(&priv->driver_lock, flags);
516 lbs_deb_leave(LBS_DEB_THREAD);
517 }
518 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
519
520 /**
521 * @brief This function returns the network statistics
522 *
523 * @param dev A pointer to struct lbs_private structure
524 * @return A pointer to net_device_stats structure
525 */
526 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
527 {
528 struct lbs_private *priv = (struct lbs_private *) dev->priv;
529
530 lbs_deb_enter(LBS_DEB_NET);
531 return &priv->stats;
532 }
533
534 static int lbs_set_mac_address(struct net_device *dev, void *addr)
535 {
536 int ret = 0;
537 struct lbs_private *priv = (struct lbs_private *) dev->priv;
538 struct sockaddr *phwaddr = addr;
539 struct cmd_ds_802_11_mac_address cmd;
540
541 lbs_deb_enter(LBS_DEB_NET);
542
543 /* In case it was called from the mesh device */
544 dev = priv->dev;
545
546 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
547 cmd.action = cpu_to_le16(CMD_ACT_SET);
548 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
549
550 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
551 if (ret) {
552 lbs_deb_net("set MAC address failed\n");
553 goto done;
554 }
555
556 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
557 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
558 if (priv->mesh_dev)
559 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
560
561 done:
562 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
563 return ret;
564 }
565
566 static int lbs_copy_multicast_address(struct lbs_private *priv,
567 struct net_device *dev)
568 {
569 int i = 0;
570 struct dev_mc_list *mcptr = dev->mc_list;
571
572 for (i = 0; i < dev->mc_count; i++) {
573 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
574 mcptr = mcptr->next;
575 }
576 return i;
577 }
578
579 static void lbs_set_multicast_list(struct net_device *dev)
580 {
581 struct lbs_private *priv = dev->priv;
582 int old_mac_control;
583 DECLARE_MAC_BUF(mac);
584
585 lbs_deb_enter(LBS_DEB_NET);
586
587 old_mac_control = priv->mac_control;
588
589 if (dev->flags & IFF_PROMISC) {
590 lbs_deb_net("enable promiscuous mode\n");
591 priv->mac_control |=
592 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
593 priv->mac_control &=
594 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
595 CMD_ACT_MAC_MULTICAST_ENABLE);
596 } else {
597 /* Multicast */
598 priv->mac_control &=
599 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
600
601 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
602 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
603 lbs_deb_net( "enabling all multicast\n");
604 priv->mac_control |=
605 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
606 priv->mac_control &=
607 ~CMD_ACT_MAC_MULTICAST_ENABLE;
608 } else {
609 priv->mac_control &=
610 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
611
612 if (!dev->mc_count) {
613 lbs_deb_net("no multicast addresses, "
614 "disabling multicast\n");
615 priv->mac_control &=
616 ~CMD_ACT_MAC_MULTICAST_ENABLE;
617 } else {
618 int i;
619
620 priv->mac_control |=
621 CMD_ACT_MAC_MULTICAST_ENABLE;
622
623 priv->nr_of_multicastmacaddr =
624 lbs_copy_multicast_address(priv, dev);
625
626 lbs_deb_net("multicast addresses: %d\n",
627 dev->mc_count);
628
629 for (i = 0; i < dev->mc_count; i++) {
630 lbs_deb_net("Multicast address %d: %s\n",
631 i, print_mac(mac,
632 priv->multicastlist[i]));
633 }
634 /* send multicast addresses to firmware */
635 lbs_prepare_and_send_command(priv,
636 CMD_MAC_MULTICAST_ADR,
637 CMD_ACT_SET, 0, 0,
638 NULL);
639 }
640 }
641 }
642
643 if (priv->mac_control != old_mac_control)
644 lbs_set_mac_control(priv);
645
646 lbs_deb_leave(LBS_DEB_NET);
647 }
648
649 /**
650 * @brief This function handles the major jobs in the LBS driver.
651 * It handles all events generated by firmware, RX data received
652 * from firmware and TX data sent from kernel.
653 *
654 * @param data A pointer to lbs_thread structure
655 * @return 0
656 */
657 static int lbs_thread(void *data)
658 {
659 struct net_device *dev = data;
660 struct lbs_private *priv = dev->priv;
661 wait_queue_t wait;
662
663 lbs_deb_enter(LBS_DEB_THREAD);
664
665 init_waitqueue_entry(&wait, current);
666
667 for (;;) {
668 int shouldsleep;
669 u8 resp_idx;
670
671 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
672 priv->currenttxskb, priv->dnld_sent);
673
674 add_wait_queue(&priv->waitq, &wait);
675 set_current_state(TASK_INTERRUPTIBLE);
676 spin_lock_irq(&priv->driver_lock);
677
678 if (kthread_should_stop())
679 shouldsleep = 0; /* Bye */
680 else if (priv->surpriseremoved)
681 shouldsleep = 1; /* We need to wait until we're _told_ to die */
682 else if (priv->psstate == PS_STATE_SLEEP)
683 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
684 else if (priv->cmd_timed_out)
685 shouldsleep = 0; /* Command timed out. Recover */
686 else if (!priv->fw_ready)
687 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
688 else if (priv->dnld_sent)
689 shouldsleep = 1; /* Something is en route to the device already */
690 else if (priv->tx_pending_len > 0)
691 shouldsleep = 0; /* We've a packet to send */
692 else if (priv->cur_cmd)
693 shouldsleep = 1; /* Can't send a command; one already running */
694 else if (!list_empty(&priv->cmdpendingq))
695 shouldsleep = 0; /* We have a command to send */
696 else if (__kfifo_len(priv->event_fifo))
697 shouldsleep = 0; /* We have an event to process */
698 else if (priv->resp_len[priv->resp_idx])
699 shouldsleep = 0; /* We have a command response */
700 else
701 shouldsleep = 1; /* No command */
702
703 if (shouldsleep) {
704 lbs_deb_thread("sleeping, connect_status %d, "
705 "ps_mode %d, ps_state %d\n",
706 priv->connect_status,
707 priv->psmode, priv->psstate);
708 spin_unlock_irq(&priv->driver_lock);
709 schedule();
710 } else
711 spin_unlock_irq(&priv->driver_lock);
712
713 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
714 priv->currenttxskb, priv->dnld_sent);
715
716 set_current_state(TASK_RUNNING);
717 remove_wait_queue(&priv->waitq, &wait);
718
719 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
720 priv->currenttxskb, priv->dnld_sent);
721
722 if (kthread_should_stop()) {
723 lbs_deb_thread("break from main thread\n");
724 break;
725 }
726
727 if (priv->surpriseremoved) {
728 lbs_deb_thread("adapter removed; waiting to die...\n");
729 continue;
730 }
731
732 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
733 priv->currenttxskb, priv->dnld_sent);
734
735 spin_lock_irq(&priv->driver_lock);
736 /* Process any pending command response */
737 resp_idx = priv->resp_idx;
738 if (priv->resp_len[resp_idx]) {
739 spin_unlock_irq(&priv->driver_lock);
740 lbs_process_command_response(priv,
741 priv->resp_buf[resp_idx],
742 priv->resp_len[resp_idx]);
743 spin_lock_irq(&priv->driver_lock);
744 priv->resp_len[resp_idx] = 0;
745 }
746 spin_unlock_irq(&priv->driver_lock);
747
748 /* command timeout stuff */
749 if (priv->cmd_timed_out && priv->cur_cmd) {
750 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
751
752 if (++priv->nr_retries > 10) {
753 lbs_pr_info("Excessive timeouts submitting command %x\n",
754 le16_to_cpu(cmdnode->cmdbuf->command));
755 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
756 priv->nr_retries = 0;
757 } else {
758 priv->cur_cmd = NULL;
759 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
760 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
761
762 /* Stick it back at the _top_ of the pending queue
763 for immediate resubmission */
764 list_add(&cmdnode->list, &priv->cmdpendingq);
765 }
766 }
767 priv->cmd_timed_out = 0;
768
769 /* Process hardware events, e.g. card removed, link lost */
770 spin_lock_irq(&priv->driver_lock);
771 while (__kfifo_len(priv->event_fifo)) {
772 u32 event;
773
774 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
775 sizeof(event));
776 spin_unlock_irq(&priv->driver_lock);
777 lbs_process_event(priv, event);
778 spin_lock_irq(&priv->driver_lock);
779 }
780 spin_unlock_irq(&priv->driver_lock);
781
782 if (!priv->fw_ready)
783 continue;
784
785 /* Check if we need to confirm Sleep Request received previously */
786 if (priv->psstate == PS_STATE_PRE_SLEEP &&
787 !priv->dnld_sent && !priv->cur_cmd) {
788 if (priv->connect_status == LBS_CONNECTED) {
789 lbs_deb_thread("pre-sleep, currenttxskb %p, "
790 "dnld_sent %d, cur_cmd %p\n",
791 priv->currenttxskb, priv->dnld_sent,
792 priv->cur_cmd);
793
794 lbs_ps_confirm_sleep(priv);
795 } else {
796 /* workaround for firmware sending
797 * deauth/linkloss event immediately
798 * after sleep request; remove this
799 * after firmware fixes it
800 */
801 priv->psstate = PS_STATE_AWAKE;
802 lbs_pr_alert("ignore PS_SleepConfirm in "
803 "non-connected state\n");
804 }
805 }
806
807 /* The PS state is changed during processing of Sleep Request
808 * event above
809 */
810 if ((priv->psstate == PS_STATE_SLEEP) ||
811 (priv->psstate == PS_STATE_PRE_SLEEP))
812 continue;
813
814 /* Execute the next command */
815 if (!priv->dnld_sent && !priv->cur_cmd)
816 lbs_execute_next_command(priv);
817
818 /* Wake-up command waiters which can't sleep in
819 * lbs_prepare_and_send_command
820 */
821 if (!list_empty(&priv->cmdpendingq))
822 wake_up_all(&priv->cmd_pending);
823
824 spin_lock_irq(&priv->driver_lock);
825 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
826 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
827 priv->tx_pending_buf,
828 priv->tx_pending_len);
829 if (ret) {
830 lbs_deb_tx("host_to_card failed %d\n", ret);
831 priv->dnld_sent = DNLD_RES_RECEIVED;
832 }
833 priv->tx_pending_len = 0;
834 if (!priv->currenttxskb) {
835 /* We can wake the queues immediately if we aren't
836 waiting for TX feedback */
837 if (priv->connect_status == LBS_CONNECTED)
838 netif_wake_queue(priv->dev);
839 if (priv->mesh_dev &&
840 priv->mesh_connect_status == LBS_CONNECTED)
841 netif_wake_queue(priv->mesh_dev);
842 }
843 }
844 spin_unlock_irq(&priv->driver_lock);
845 }
846
847 del_timer(&priv->command_timer);
848 wake_up_all(&priv->cmd_pending);
849
850 lbs_deb_leave(LBS_DEB_THREAD);
851 return 0;
852 }
853
854 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
855 struct cmd_header *cmd)
856 {
857 lbs_deb_enter(LBS_DEB_FW);
858
859 netif_device_detach(priv->dev);
860 if (priv->mesh_dev)
861 netif_device_detach(priv->mesh_dev);
862
863 priv->fw_ready = 0;
864 lbs_deb_leave(LBS_DEB_FW);
865 return 0;
866 }
867
868 int lbs_suspend(struct lbs_private *priv)
869 {
870 struct cmd_header cmd;
871 int ret;
872
873 lbs_deb_enter(LBS_DEB_FW);
874
875 if (priv->wol_criteria == 0xffffffff) {
876 lbs_pr_info("Suspend attempt without configuring wake params!\n");
877 return -EINVAL;
878 }
879
880 memset(&cmd, 0, sizeof(cmd));
881
882 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
883 sizeof(cmd), lbs_suspend_callback, 0);
884 if (ret)
885 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
886
887 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
888 return ret;
889 }
890 EXPORT_SYMBOL_GPL(lbs_suspend);
891
892 int lbs_resume(struct lbs_private *priv)
893 {
894 lbs_deb_enter(LBS_DEB_FW);
895
896 priv->fw_ready = 1;
897
898 /* Firmware doesn't seem to give us RX packets any more
899 until we send it some command. Might as well update */
900 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
901 0, 0, NULL);
902
903 netif_device_attach(priv->dev);
904 if (priv->mesh_dev)
905 netif_device_attach(priv->mesh_dev);
906
907 lbs_deb_leave(LBS_DEB_FW);
908 return 0;
909 }
910 EXPORT_SYMBOL_GPL(lbs_resume);
911
912 /**
913 * @brief This function downloads firmware image, gets
914 * HW spec from firmware and set basic parameters to
915 * firmware.
916 *
917 * @param priv A pointer to struct lbs_private structure
918 * @return 0 or -1
919 */
920 static int lbs_setup_firmware(struct lbs_private *priv)
921 {
922 int ret = -1;
923
924 lbs_deb_enter(LBS_DEB_FW);
925
926 /*
927 * Read MAC address from HW
928 */
929 memset(priv->current_addr, 0xff, ETH_ALEN);
930 ret = lbs_update_hw_spec(priv);
931 if (ret) {
932 ret = -1;
933 goto done;
934 }
935
936 lbs_set_mac_control(priv);
937
938 ret = lbs_get_data_rate(priv);
939 if (ret < 0) {
940 ret = -1;
941 goto done;
942 }
943
944 ret = 0;
945 done:
946 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
947 return ret;
948 }
949
950 /**
951 * This function handles the timeout of command sending.
952 * It will re-send the same command again.
953 */
954 static void command_timer_fn(unsigned long data)
955 {
956 struct lbs_private *priv = (struct lbs_private *)data;
957 unsigned long flags;
958
959 lbs_deb_enter(LBS_DEB_CMD);
960 spin_lock_irqsave(&priv->driver_lock, flags);
961
962 if (!priv->cur_cmd) {
963 lbs_pr_info("Command timer expired; no pending command\n");
964 goto out;
965 }
966
967 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
968
969 priv->cmd_timed_out = 1;
970 wake_up_interruptible(&priv->waitq);
971 out:
972 spin_unlock_irqrestore(&priv->driver_lock, flags);
973 lbs_deb_leave(LBS_DEB_CMD);
974 }
975
976 static void lbs_sync_channel_worker(struct work_struct *work)
977 {
978 struct lbs_private *priv = container_of(work, struct lbs_private,
979 sync_channel);
980
981 lbs_deb_enter(LBS_DEB_MAIN);
982 if (lbs_update_channel(priv))
983 lbs_pr_info("Channel synchronization failed.");
984 lbs_deb_leave(LBS_DEB_MAIN);
985 }
986
987
988 static int lbs_init_adapter(struct lbs_private *priv)
989 {
990 size_t bufsize;
991 int i, ret = 0;
992
993 lbs_deb_enter(LBS_DEB_MAIN);
994
995 /* Allocate buffer to store the BSSID list */
996 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
997 priv->networks = kzalloc(bufsize, GFP_KERNEL);
998 if (!priv->networks) {
999 lbs_pr_err("Out of memory allocating beacons\n");
1000 ret = -1;
1001 goto out;
1002 }
1003
1004 /* Initialize scan result lists */
1005 INIT_LIST_HEAD(&priv->network_free_list);
1006 INIT_LIST_HEAD(&priv->network_list);
1007 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1008 list_add_tail(&priv->networks[i].list,
1009 &priv->network_free_list);
1010 }
1011
1012 memset(priv->current_addr, 0xff, ETH_ALEN);
1013
1014 priv->connect_status = LBS_DISCONNECTED;
1015 priv->mesh_connect_status = LBS_DISCONNECTED;
1016 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1017 priv->mode = IW_MODE_INFRA;
1018 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1019 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1020 priv->radioon = RADIO_ON;
1021 priv->auto_rate = 1;
1022 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1023 priv->psmode = LBS802_11POWERMODECAM;
1024 priv->psstate = PS_STATE_FULL_POWER;
1025
1026 mutex_init(&priv->lock);
1027
1028 setup_timer(&priv->command_timer, command_timer_fn,
1029 (unsigned long)priv);
1030
1031 INIT_LIST_HEAD(&priv->cmdfreeq);
1032 INIT_LIST_HEAD(&priv->cmdpendingq);
1033
1034 spin_lock_init(&priv->driver_lock);
1035 init_waitqueue_head(&priv->cmd_pending);
1036
1037 /* Allocate the command buffers */
1038 if (lbs_allocate_cmd_buffer(priv)) {
1039 lbs_pr_err("Out of memory allocating command buffers\n");
1040 ret = -ENOMEM;
1041 goto out;
1042 }
1043 priv->resp_idx = 0;
1044 priv->resp_len[0] = priv->resp_len[1] = 0;
1045
1046 /* Create the event FIFO */
1047 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1048 if (IS_ERR(priv->event_fifo)) {
1049 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1050 ret = -ENOMEM;
1051 goto out;
1052 }
1053
1054 out:
1055 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1056
1057 return ret;
1058 }
1059
1060 static void lbs_free_adapter(struct lbs_private *priv)
1061 {
1062 lbs_deb_enter(LBS_DEB_MAIN);
1063
1064 lbs_free_cmd_buffer(priv);
1065 if (priv->event_fifo)
1066 kfifo_free(priv->event_fifo);
1067 del_timer(&priv->command_timer);
1068 kfree(priv->networks);
1069 priv->networks = NULL;
1070
1071 lbs_deb_leave(LBS_DEB_MAIN);
1072 }
1073
1074 /**
1075 * @brief This function adds the card. it will probe the
1076 * card, allocate the lbs_priv and initialize the device.
1077 *
1078 * @param card A pointer to card
1079 * @return A pointer to struct lbs_private structure
1080 */
1081 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1082 {
1083 struct net_device *dev = NULL;
1084 struct lbs_private *priv = NULL;
1085
1086 lbs_deb_enter(LBS_DEB_MAIN);
1087
1088 /* Allocate an Ethernet device and register it */
1089 dev = alloc_etherdev(sizeof(struct lbs_private));
1090 if (!dev) {
1091 lbs_pr_err("init ethX device failed\n");
1092 goto done;
1093 }
1094 priv = dev->priv;
1095
1096 if (lbs_init_adapter(priv)) {
1097 lbs_pr_err("failed to initialize adapter structure.\n");
1098 goto err_init_adapter;
1099 }
1100
1101 priv->dev = dev;
1102 priv->card = card;
1103 priv->mesh_open = 0;
1104 priv->infra_open = 0;
1105
1106 /* Setup the OS Interface to our functions */
1107 dev->open = lbs_dev_open;
1108 dev->hard_start_xmit = lbs_hard_start_xmit;
1109 dev->stop = lbs_eth_stop;
1110 dev->set_mac_address = lbs_set_mac_address;
1111 dev->tx_timeout = lbs_tx_timeout;
1112 dev->get_stats = lbs_get_stats;
1113 dev->watchdog_timeo = 5 * HZ;
1114 dev->ethtool_ops = &lbs_ethtool_ops;
1115 #ifdef WIRELESS_EXT
1116 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1117 #endif
1118 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1119 dev->set_multicast_list = lbs_set_multicast_list;
1120
1121 SET_NETDEV_DEV(dev, dmdev);
1122
1123 priv->rtap_net_dev = NULL;
1124
1125 lbs_deb_thread("Starting main thread...\n");
1126 init_waitqueue_head(&priv->waitq);
1127 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1128 if (IS_ERR(priv->main_thread)) {
1129 lbs_deb_thread("Error creating main thread.\n");
1130 goto err_init_adapter;
1131 }
1132
1133 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1134 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1135 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1136 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1137
1138 sprintf(priv->mesh_ssid, "mesh");
1139 priv->mesh_ssid_len = 4;
1140
1141 priv->wol_criteria = 0xffffffff;
1142 priv->wol_gpio = 0xff;
1143
1144 goto done;
1145
1146 err_init_adapter:
1147 lbs_free_adapter(priv);
1148 free_netdev(dev);
1149 priv = NULL;
1150
1151 done:
1152 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1153 return priv;
1154 }
1155 EXPORT_SYMBOL_GPL(lbs_add_card);
1156
1157
1158 int lbs_remove_card(struct lbs_private *priv)
1159 {
1160 struct net_device *dev = priv->dev;
1161 union iwreq_data wrqu;
1162
1163 lbs_deb_enter(LBS_DEB_MAIN);
1164
1165 lbs_remove_mesh(priv);
1166 lbs_remove_rtap(priv);
1167
1168 dev = priv->dev;
1169
1170 cancel_delayed_work(&priv->scan_work);
1171 cancel_delayed_work(&priv->assoc_work);
1172 destroy_workqueue(priv->work_thread);
1173
1174 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1175 priv->psmode = LBS802_11POWERMODECAM;
1176 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1177 }
1178
1179 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1180 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1181 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1182
1183 /* Stop the thread servicing the interrupts */
1184 priv->surpriseremoved = 1;
1185 kthread_stop(priv->main_thread);
1186
1187 lbs_free_adapter(priv);
1188
1189 priv->dev = NULL;
1190 free_netdev(dev);
1191
1192 lbs_deb_leave(LBS_DEB_MAIN);
1193 return 0;
1194 }
1195 EXPORT_SYMBOL_GPL(lbs_remove_card);
1196
1197
1198 int lbs_start_card(struct lbs_private *priv)
1199 {
1200 struct net_device *dev = priv->dev;
1201 int ret = -1;
1202
1203 lbs_deb_enter(LBS_DEB_MAIN);
1204
1205 /* poke the firmware */
1206 ret = lbs_setup_firmware(priv);
1207 if (ret)
1208 goto done;
1209
1210 /* init 802.11d */
1211 lbs_init_11d(priv);
1212
1213 if (register_netdev(dev)) {
1214 lbs_pr_err("cannot register ethX device\n");
1215 goto done;
1216 }
1217 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1218 lbs_pr_err("cannot register lbs_rtap attribute\n");
1219
1220 lbs_update_channel(priv);
1221
1222 /* 5.0.16p0 is known to NOT support any mesh */
1223 if (priv->fwrelease > 0x05001000) {
1224 /* Enable mesh, if supported, and work out which TLV it uses.
1225 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1226 0x100 + 37 is the official value used in 5.110.21.pXX
1227 but we check them in that order because 20.pXX doesn't
1228 give an error -- it just silently fails. */
1229
1230 /* 5.110.20.pXX firmware will fail the command if the channel
1231 doesn't match the existing channel. But only if the TLV
1232 is correct. If the channel is wrong, _BOTH_ versions will
1233 give an error to 0x100+291, and allow 0x100+37 to succeed.
1234 It's just that 5.110.20.pXX will not have done anything
1235 useful */
1236
1237 priv->mesh_tlv = 0x100 + 291;
1238 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1239 priv->mesh_tlv = 0x100 + 37;
1240 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1241 priv->mesh_tlv = 0;
1242 }
1243 if (priv->mesh_tlv) {
1244 lbs_add_mesh(priv);
1245
1246 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1247 lbs_pr_err("cannot register lbs_mesh attribute\n");
1248 }
1249 }
1250
1251 lbs_debugfs_init_one(priv, dev);
1252
1253 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1254
1255 ret = 0;
1256
1257 done:
1258 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1259 return ret;
1260 }
1261 EXPORT_SYMBOL_GPL(lbs_start_card);
1262
1263
1264 int lbs_stop_card(struct lbs_private *priv)
1265 {
1266 struct net_device *dev = priv->dev;
1267 int ret = -1;
1268 struct cmd_ctrl_node *cmdnode;
1269 unsigned long flags;
1270
1271 lbs_deb_enter(LBS_DEB_MAIN);
1272
1273 netif_stop_queue(priv->dev);
1274 netif_carrier_off(priv->dev);
1275
1276 lbs_debugfs_remove_one(priv);
1277 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1278 if (priv->mesh_tlv)
1279 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1280
1281 /* Flush pending command nodes */
1282 spin_lock_irqsave(&priv->driver_lock, flags);
1283 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1284 cmdnode->result = -ENOENT;
1285 cmdnode->cmdwaitqwoken = 1;
1286 wake_up_interruptible(&cmdnode->cmdwait_q);
1287 }
1288 spin_unlock_irqrestore(&priv->driver_lock, flags);
1289
1290 unregister_netdev(dev);
1291
1292 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1293 return ret;
1294 }
1295 EXPORT_SYMBOL_GPL(lbs_stop_card);
1296
1297
1298 /**
1299 * @brief This function adds mshX interface
1300 *
1301 * @param priv A pointer to the struct lbs_private structure
1302 * @return 0 if successful, -X otherwise
1303 */
1304 static int lbs_add_mesh(struct lbs_private *priv)
1305 {
1306 struct net_device *mesh_dev = NULL;
1307 int ret = 0;
1308
1309 lbs_deb_enter(LBS_DEB_MESH);
1310
1311 /* Allocate a virtual mesh device */
1312 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1313 lbs_deb_mesh("init mshX device failed\n");
1314 ret = -ENOMEM;
1315 goto done;
1316 }
1317 mesh_dev->priv = priv;
1318 priv->mesh_dev = mesh_dev;
1319
1320 mesh_dev->open = lbs_dev_open;
1321 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1322 mesh_dev->stop = lbs_mesh_stop;
1323 mesh_dev->get_stats = lbs_get_stats;
1324 mesh_dev->set_mac_address = lbs_set_mac_address;
1325 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1326 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1327 sizeof(priv->dev->dev_addr));
1328
1329 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1330
1331 #ifdef WIRELESS_EXT
1332 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1333 #endif
1334 /* Register virtual mesh interface */
1335 ret = register_netdev(mesh_dev);
1336 if (ret) {
1337 lbs_pr_err("cannot register mshX virtual interface\n");
1338 goto err_free;
1339 }
1340
1341 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1342 if (ret)
1343 goto err_unregister;
1344
1345 /* Everything successful */
1346 ret = 0;
1347 goto done;
1348
1349 err_unregister:
1350 unregister_netdev(mesh_dev);
1351
1352 err_free:
1353 free_netdev(mesh_dev);
1354
1355 done:
1356 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1357 return ret;
1358 }
1359
1360 static void lbs_remove_mesh(struct lbs_private *priv)
1361 {
1362 struct net_device *mesh_dev;
1363
1364
1365 mesh_dev = priv->mesh_dev;
1366 if (!mesh_dev)
1367 return;
1368
1369 lbs_deb_enter(LBS_DEB_MESH);
1370 netif_stop_queue(mesh_dev);
1371 netif_carrier_off(priv->mesh_dev);
1372 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1373 unregister_netdev(mesh_dev);
1374 priv->mesh_dev = NULL;
1375 free_netdev(mesh_dev);
1376 lbs_deb_leave(LBS_DEB_MESH);
1377 }
1378
1379 /**
1380 * @brief This function finds the CFP in
1381 * region_cfp_table based on region and band parameter.
1382 *
1383 * @param region The region code
1384 * @param band The band
1385 * @param cfp_no A pointer to CFP number
1386 * @return A pointer to CFP
1387 */
1388 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1389 {
1390 int i, end;
1391
1392 lbs_deb_enter(LBS_DEB_MAIN);
1393
1394 end = ARRAY_SIZE(region_cfp_table);
1395
1396 for (i = 0; i < end ; i++) {
1397 lbs_deb_main("region_cfp_table[i].region=%d\n",
1398 region_cfp_table[i].region);
1399 if (region_cfp_table[i].region == region) {
1400 *cfp_no = region_cfp_table[i].cfp_no_BG;
1401 lbs_deb_leave(LBS_DEB_MAIN);
1402 return region_cfp_table[i].cfp_BG;
1403 }
1404 }
1405
1406 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1407 return NULL;
1408 }
1409
1410 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1411 {
1412 int ret = 0;
1413 int i = 0;
1414
1415 struct chan_freq_power *cfp;
1416 int cfp_no;
1417
1418 lbs_deb_enter(LBS_DEB_MAIN);
1419
1420 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1421
1422 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1423 if (cfp != NULL) {
1424 priv->region_channel[i].nrcfp = cfp_no;
1425 priv->region_channel[i].CFP = cfp;
1426 } else {
1427 lbs_deb_main("wrong region code %#x in band B/G\n",
1428 region);
1429 ret = -1;
1430 goto out;
1431 }
1432 priv->region_channel[i].valid = 1;
1433 priv->region_channel[i].region = region;
1434 priv->region_channel[i].band = band;
1435 i++;
1436 out:
1437 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1438 return ret;
1439 }
1440
1441 void lbs_queue_event(struct lbs_private *priv, u32 event)
1442 {
1443 unsigned long flags;
1444
1445 lbs_deb_enter(LBS_DEB_THREAD);
1446 spin_lock_irqsave(&priv->driver_lock, flags);
1447
1448 if (priv->psstate == PS_STATE_SLEEP)
1449 priv->psstate = PS_STATE_AWAKE;
1450
1451 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1452
1453 wake_up_interruptible(&priv->waitq);
1454
1455 spin_unlock_irqrestore(&priv->driver_lock, flags);
1456 lbs_deb_leave(LBS_DEB_THREAD);
1457 }
1458 EXPORT_SYMBOL_GPL(lbs_queue_event);
1459
1460 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1461 {
1462 lbs_deb_enter(LBS_DEB_THREAD);
1463
1464 if (priv->psstate == PS_STATE_SLEEP)
1465 priv->psstate = PS_STATE_AWAKE;
1466
1467 /* Swap buffers by flipping the response index */
1468 BUG_ON(resp_idx > 1);
1469 priv->resp_idx = resp_idx;
1470
1471 wake_up_interruptible(&priv->waitq);
1472
1473 lbs_deb_leave(LBS_DEB_THREAD);
1474 }
1475 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1476
1477 static int __init lbs_init_module(void)
1478 {
1479 lbs_deb_enter(LBS_DEB_MAIN);
1480 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1481 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1482 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1483 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1484 lbs_debugfs_init();
1485 lbs_deb_leave(LBS_DEB_MAIN);
1486 return 0;
1487 }
1488
1489 static void __exit lbs_exit_module(void)
1490 {
1491 lbs_deb_enter(LBS_DEB_MAIN);
1492 lbs_debugfs_remove();
1493 lbs_deb_leave(LBS_DEB_MAIN);
1494 }
1495
1496 /*
1497 * rtap interface support fuctions
1498 */
1499
1500 static int lbs_rtap_open(struct net_device *dev)
1501 {
1502 /* Yes, _stop_ the queue. Because we don't support injection */
1503 lbs_deb_enter(LBS_DEB_MAIN);
1504 netif_carrier_off(dev);
1505 netif_stop_queue(dev);
1506 lbs_deb_leave(LBS_DEB_LEAVE);
1507 return 0;
1508 }
1509
1510 static int lbs_rtap_stop(struct net_device *dev)
1511 {
1512 lbs_deb_enter(LBS_DEB_MAIN);
1513 lbs_deb_leave(LBS_DEB_MAIN);
1514 return 0;
1515 }
1516
1517 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1518 {
1519 netif_stop_queue(dev);
1520 return NETDEV_TX_BUSY;
1521 }
1522
1523 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1524 {
1525 struct lbs_private *priv = dev->priv;
1526 lbs_deb_enter(LBS_DEB_NET);
1527 return &priv->stats;
1528 }
1529
1530
1531 static void lbs_remove_rtap(struct lbs_private *priv)
1532 {
1533 lbs_deb_enter(LBS_DEB_MAIN);
1534 if (priv->rtap_net_dev == NULL)
1535 return;
1536 unregister_netdev(priv->rtap_net_dev);
1537 free_netdev(priv->rtap_net_dev);
1538 priv->rtap_net_dev = NULL;
1539 lbs_deb_leave(LBS_DEB_MAIN);
1540 }
1541
1542 static int lbs_add_rtap(struct lbs_private *priv)
1543 {
1544 int ret = 0;
1545 struct net_device *rtap_dev;
1546
1547 lbs_deb_enter(LBS_DEB_MAIN);
1548 if (priv->rtap_net_dev) {
1549 ret = -EPERM;
1550 goto out;
1551 }
1552
1553 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1554 if (rtap_dev == NULL) {
1555 ret = -ENOMEM;
1556 goto out;
1557 }
1558
1559 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1560 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1561 rtap_dev->open = lbs_rtap_open;
1562 rtap_dev->stop = lbs_rtap_stop;
1563 rtap_dev->get_stats = lbs_rtap_get_stats;
1564 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1565 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1566 rtap_dev->priv = priv;
1567
1568 ret = register_netdev(rtap_dev);
1569 if (ret) {
1570 free_netdev(rtap_dev);
1571 goto out;
1572 }
1573 priv->rtap_net_dev = rtap_dev;
1574
1575 out:
1576 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1577 return ret;
1578 }
1579
1580 #ifndef CONFIG_IEEE80211
1581 const char *escape_essid(const char *essid, u8 essid_len)
1582 {
1583 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1584 const char *s = essid;
1585 char *d = escaped;
1586
1587 if (ieee80211_is_empty_essid(essid, essid_len)) {
1588 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1589 return escaped;
1590 }
1591
1592 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1593 while (essid_len--) {
1594 if (*s == '\0') {
1595 *d++ = '\\';
1596 *d++ = '0';
1597 s++;
1598 } else {
1599 *d++ = *s++;
1600 }
1601 }
1602 *d = '\0';
1603 return escaped;
1604 }
1605 #endif
1606
1607 module_init(lbs_init_module);
1608 module_exit(lbs_exit_module);
1609
1610 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1611 MODULE_AUTHOR("Marvell International Ltd.");
1612 MODULE_LICENSE("GPL");
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