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libertas: fix sleep confirmation
[linux-2.6.git] / drivers / net / wireless / libertas / main.c
blobacfc4bfcc26272e7e1184a24308e4bab70377a10
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 /* Process any pending command response */
736 spin_lock_irq(&priv->driver_lock);
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 priv->dnld_sent = DNLD_RES_RECEIVED;
760 lbs_pr_info("requeueing command %x due to timeout (#%d)\n",
761 le16_to_cpu(cmdnode->cmdbuf->command), priv->nr_retries);
762
763 /* Stick it back at the _top_ of the pending queue
764 for immediate resubmission */
765 list_add(&cmdnode->list, &priv->cmdpendingq);
766 }
767 }
768 priv->cmd_timed_out = 0;
769
770 /* Process hardware events, e.g. card removed, link lost */
771 spin_lock_irq(&priv->driver_lock);
772 while (__kfifo_len(priv->event_fifo)) {
773 u32 event;
774
775 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
776 sizeof(event));
777 spin_unlock_irq(&priv->driver_lock);
778 lbs_process_event(priv, event);
779 spin_lock_irq(&priv->driver_lock);
780 }
781 spin_unlock_irq(&priv->driver_lock);
782
783 if (!priv->fw_ready)
784 continue;
785
786 /* Check if we need to confirm Sleep Request received previously */
787 if (priv->psstate == PS_STATE_PRE_SLEEP &&
788 !priv->dnld_sent && !priv->cur_cmd) {
789 if (priv->connect_status == LBS_CONNECTED) {
790 lbs_deb_thread("pre-sleep, currenttxskb %p, "
791 "dnld_sent %d, cur_cmd %p\n",
792 priv->currenttxskb, priv->dnld_sent,
793 priv->cur_cmd);
794
795 lbs_ps_confirm_sleep(priv);
796 } else {
797 /* workaround for firmware sending
798 * deauth/linkloss event immediately
799 * after sleep request; remove this
800 * after firmware fixes it
801 */
802 priv->psstate = PS_STATE_AWAKE;
803 lbs_pr_alert("ignore PS_SleepConfirm in "
804 "non-connected state\n");
805 }
806 }
807
808 /* The PS state is changed during processing of Sleep Request
809 * event above
810 */
811 if ((priv->psstate == PS_STATE_SLEEP) ||
812 (priv->psstate == PS_STATE_PRE_SLEEP))
813 continue;
814
815 /* Execute the next command */
816 if (!priv->dnld_sent && !priv->cur_cmd)
817 lbs_execute_next_command(priv);
818
819 /* Wake-up command waiters which can't sleep in
820 * lbs_prepare_and_send_command
821 */
822 if (!list_empty(&priv->cmdpendingq))
823 wake_up_all(&priv->cmd_pending);
824
825 spin_lock_irq(&priv->driver_lock);
826 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
827 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
828 priv->tx_pending_buf,
829 priv->tx_pending_len);
830 if (ret) {
831 lbs_deb_tx("host_to_card failed %d\n", ret);
832 priv->dnld_sent = DNLD_RES_RECEIVED;
833 }
834 priv->tx_pending_len = 0;
835 if (!priv->currenttxskb) {
836 /* We can wake the queues immediately if we aren't
837 waiting for TX feedback */
838 if (priv->connect_status == LBS_CONNECTED)
839 netif_wake_queue(priv->dev);
840 if (priv->mesh_dev &&
841 priv->mesh_connect_status == LBS_CONNECTED)
842 netif_wake_queue(priv->mesh_dev);
843 }
844 }
845 spin_unlock_irq(&priv->driver_lock);
846 }
847
848 del_timer(&priv->command_timer);
849 wake_up_all(&priv->cmd_pending);
850
851 lbs_deb_leave(LBS_DEB_THREAD);
852 return 0;
853 }
854
855 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
856 struct cmd_header *cmd)
857 {
858 lbs_deb_enter(LBS_DEB_FW);
859
860 netif_device_detach(priv->dev);
861 if (priv->mesh_dev)
862 netif_device_detach(priv->mesh_dev);
863
864 priv->fw_ready = 0;
865 lbs_deb_leave(LBS_DEB_FW);
866 return 0;
867 }
868
869 int lbs_suspend(struct lbs_private *priv)
870 {
871 struct cmd_header cmd;
872 int ret;
873
874 lbs_deb_enter(LBS_DEB_FW);
875
876 if (priv->wol_criteria == 0xffffffff) {
877 lbs_pr_info("Suspend attempt without configuring wake params!\n");
878 return -EINVAL;
879 }
880
881 memset(&cmd, 0, sizeof(cmd));
882
883 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
884 sizeof(cmd), lbs_suspend_callback, 0);
885 if (ret)
886 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
887
888 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
889 return ret;
890 }
891 EXPORT_SYMBOL_GPL(lbs_suspend);
892
893 int lbs_resume(struct lbs_private *priv)
894 {
895 lbs_deb_enter(LBS_DEB_FW);
896
897 priv->fw_ready = 1;
898
899 /* Firmware doesn't seem to give us RX packets any more
900 until we send it some command. Might as well update */
901 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
902 0, 0, NULL);
903
904 netif_device_attach(priv->dev);
905 if (priv->mesh_dev)
906 netif_device_attach(priv->mesh_dev);
907
908 lbs_deb_leave(LBS_DEB_FW);
909 return 0;
910 }
911 EXPORT_SYMBOL_GPL(lbs_resume);
912
913 /**
914 * @brief This function downloads firmware image, gets
915 * HW spec from firmware and set basic parameters to
916 * firmware.
917 *
918 * @param priv A pointer to struct lbs_private structure
919 * @return 0 or -1
920 */
921 static int lbs_setup_firmware(struct lbs_private *priv)
922 {
923 int ret = -1;
924
925 lbs_deb_enter(LBS_DEB_FW);
926
927 /*
928 * Read MAC address from HW
929 */
930 memset(priv->current_addr, 0xff, ETH_ALEN);
931 ret = lbs_update_hw_spec(priv);
932 if (ret) {
933 ret = -1;
934 goto done;
935 }
936
937 lbs_set_mac_control(priv);
938
939 ret = lbs_get_data_rate(priv);
940 if (ret < 0) {
941 ret = -1;
942 goto done;
943 }
944
945 ret = 0;
946 done:
947 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
948 return ret;
949 }
950
951 /**
952 * This function handles the timeout of command sending.
953 * It will re-send the same command again.
954 */
955 static void command_timer_fn(unsigned long data)
956 {
957 struct lbs_private *priv = (struct lbs_private *)data;
958 unsigned long flags;
959
960 lbs_deb_enter(LBS_DEB_CMD);
961 spin_lock_irqsave(&priv->driver_lock, flags);
962
963 if (!priv->cur_cmd) {
964 lbs_pr_info("Command timer expired; no pending command\n");
965 goto out;
966 }
967
968 lbs_pr_info("Command %x timed out\n", le16_to_cpu(priv->cur_cmd->cmdbuf->command));
969
970 priv->cmd_timed_out = 1;
971 wake_up_interruptible(&priv->waitq);
972 out:
973 spin_unlock_irqrestore(&priv->driver_lock, flags);
974 lbs_deb_leave(LBS_DEB_CMD);
975 }
976
977 static void lbs_sync_channel_worker(struct work_struct *work)
978 {
979 struct lbs_private *priv = container_of(work, struct lbs_private,
980 sync_channel);
981
982 lbs_deb_enter(LBS_DEB_MAIN);
983 if (lbs_update_channel(priv))
984 lbs_pr_info("Channel synchronization failed.");
985 lbs_deb_leave(LBS_DEB_MAIN);
986 }
987
988
989 static int lbs_init_adapter(struct lbs_private *priv)
990 {
991 size_t bufsize;
992 int i, ret = 0;
993
994 lbs_deb_enter(LBS_DEB_MAIN);
995
996 /* Allocate buffer to store the BSSID list */
997 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
998 priv->networks = kzalloc(bufsize, GFP_KERNEL);
999 if (!priv->networks) {
1000 lbs_pr_err("Out of memory allocating beacons\n");
1001 ret = -1;
1002 goto out;
1003 }
1004
1005 /* Initialize scan result lists */
1006 INIT_LIST_HEAD(&priv->network_free_list);
1007 INIT_LIST_HEAD(&priv->network_list);
1008 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1009 list_add_tail(&priv->networks[i].list,
1010 &priv->network_free_list);
1011 }
1012
1013 memset(priv->current_addr, 0xff, ETH_ALEN);
1014
1015 priv->connect_status = LBS_DISCONNECTED;
1016 priv->mesh_connect_status = LBS_DISCONNECTED;
1017 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1018 priv->mode = IW_MODE_INFRA;
1019 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1020 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1021 priv->radioon = RADIO_ON;
1022 priv->auto_rate = 1;
1023 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1024 priv->psmode = LBS802_11POWERMODECAM;
1025 priv->psstate = PS_STATE_FULL_POWER;
1026
1027 mutex_init(&priv->lock);
1028
1029 setup_timer(&priv->command_timer, command_timer_fn,
1030 (unsigned long)priv);
1031
1032 INIT_LIST_HEAD(&priv->cmdfreeq);
1033 INIT_LIST_HEAD(&priv->cmdpendingq);
1034
1035 spin_lock_init(&priv->driver_lock);
1036 init_waitqueue_head(&priv->cmd_pending);
1037
1038 /* Allocate the command buffers */
1039 if (lbs_allocate_cmd_buffer(priv)) {
1040 lbs_pr_err("Out of memory allocating command buffers\n");
1041 ret = -ENOMEM;
1042 goto out;
1043 }
1044 priv->resp_idx = 0;
1045 priv->resp_len[0] = priv->resp_len[1] = 0;
1046
1047 /* Create the event FIFO */
1048 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1049 if (IS_ERR(priv->event_fifo)) {
1050 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1051 ret = -ENOMEM;
1052 goto out;
1053 }
1054
1055 out:
1056 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1057
1058 return ret;
1059 }
1060
1061 static void lbs_free_adapter(struct lbs_private *priv)
1062 {
1063 lbs_deb_enter(LBS_DEB_MAIN);
1064
1065 lbs_free_cmd_buffer(priv);
1066 if (priv->event_fifo)
1067 kfifo_free(priv->event_fifo);
1068 del_timer(&priv->command_timer);
1069 kfree(priv->networks);
1070 priv->networks = NULL;
1071
1072 lbs_deb_leave(LBS_DEB_MAIN);
1073 }
1074
1075 /**
1076 * @brief This function adds the card. it will probe the
1077 * card, allocate the lbs_priv and initialize the device.
1078 *
1079 * @param card A pointer to card
1080 * @return A pointer to struct lbs_private structure
1081 */
1082 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1083 {
1084 struct net_device *dev = NULL;
1085 struct lbs_private *priv = NULL;
1086
1087 lbs_deb_enter(LBS_DEB_MAIN);
1088
1089 /* Allocate an Ethernet device and register it */
1090 dev = alloc_etherdev(sizeof(struct lbs_private));
1091 if (!dev) {
1092 lbs_pr_err("init ethX device failed\n");
1093 goto done;
1094 }
1095 priv = dev->priv;
1096
1097 if (lbs_init_adapter(priv)) {
1098 lbs_pr_err("failed to initialize adapter structure.\n");
1099 goto err_init_adapter;
1100 }
1101
1102 priv->dev = dev;
1103 priv->card = card;
1104 priv->mesh_open = 0;
1105 priv->infra_open = 0;
1106
1107 /* Setup the OS Interface to our functions */
1108 dev->open = lbs_dev_open;
1109 dev->hard_start_xmit = lbs_hard_start_xmit;
1110 dev->stop = lbs_eth_stop;
1111 dev->set_mac_address = lbs_set_mac_address;
1112 dev->tx_timeout = lbs_tx_timeout;
1113 dev->get_stats = lbs_get_stats;
1114 dev->watchdog_timeo = 5 * HZ;
1115 dev->ethtool_ops = &lbs_ethtool_ops;
1116 #ifdef WIRELESS_EXT
1117 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1118 #endif
1119 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1120 dev->set_multicast_list = lbs_set_multicast_list;
1121
1122 SET_NETDEV_DEV(dev, dmdev);
1123
1124 priv->rtap_net_dev = NULL;
1125
1126 lbs_deb_thread("Starting main thread...\n");
1127 init_waitqueue_head(&priv->waitq);
1128 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1129 if (IS_ERR(priv->main_thread)) {
1130 lbs_deb_thread("Error creating main thread.\n");
1131 goto err_init_adapter;
1132 }
1133
1134 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1135 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1136 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1137 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1138
1139 sprintf(priv->mesh_ssid, "mesh");
1140 priv->mesh_ssid_len = 4;
1141
1142 priv->wol_criteria = 0xffffffff;
1143 priv->wol_gpio = 0xff;
1144
1145 goto done;
1146
1147 err_init_adapter:
1148 lbs_free_adapter(priv);
1149 free_netdev(dev);
1150 priv = NULL;
1151
1152 done:
1153 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1154 return priv;
1155 }
1156 EXPORT_SYMBOL_GPL(lbs_add_card);
1157
1158
1159 int lbs_remove_card(struct lbs_private *priv)
1160 {
1161 struct net_device *dev = priv->dev;
1162 union iwreq_data wrqu;
1163
1164 lbs_deb_enter(LBS_DEB_MAIN);
1165
1166 lbs_remove_mesh(priv);
1167 lbs_remove_rtap(priv);
1168
1169 dev = priv->dev;
1170
1171 cancel_delayed_work(&priv->scan_work);
1172 cancel_delayed_work(&priv->assoc_work);
1173 destroy_workqueue(priv->work_thread);
1174
1175 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1176 priv->psmode = LBS802_11POWERMODECAM;
1177 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1178 }
1179
1180 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1181 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1182 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1183
1184 /* Stop the thread servicing the interrupts */
1185 priv->surpriseremoved = 1;
1186 kthread_stop(priv->main_thread);
1187
1188 lbs_free_adapter(priv);
1189
1190 priv->dev = NULL;
1191 free_netdev(dev);
1192
1193 lbs_deb_leave(LBS_DEB_MAIN);
1194 return 0;
1195 }
1196 EXPORT_SYMBOL_GPL(lbs_remove_card);
1197
1198
1199 int lbs_start_card(struct lbs_private *priv)
1200 {
1201 struct net_device *dev = priv->dev;
1202 int ret = -1;
1203
1204 lbs_deb_enter(LBS_DEB_MAIN);
1205
1206 /* poke the firmware */
1207 ret = lbs_setup_firmware(priv);
1208 if (ret)
1209 goto done;
1210
1211 /* init 802.11d */
1212 lbs_init_11d(priv);
1213
1214 if (register_netdev(dev)) {
1215 lbs_pr_err("cannot register ethX device\n");
1216 goto done;
1217 }
1218 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1219 lbs_pr_err("cannot register lbs_rtap attribute\n");
1220
1221 lbs_update_channel(priv);
1222
1223 /* 5.0.16p0 is known to NOT support any mesh */
1224 if (priv->fwrelease > 0x05001000) {
1225 /* Enable mesh, if supported, and work out which TLV it uses.
1226 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1227 0x100 + 37 is the official value used in 5.110.21.pXX
1228 but we check them in that order because 20.pXX doesn't
1229 give an error -- it just silently fails. */
1230
1231 /* 5.110.20.pXX firmware will fail the command if the channel
1232 doesn't match the existing channel. But only if the TLV
1233 is correct. If the channel is wrong, _BOTH_ versions will
1234 give an error to 0x100+291, and allow 0x100+37 to succeed.
1235 It's just that 5.110.20.pXX will not have done anything
1236 useful */
1237
1238 priv->mesh_tlv = 0x100 + 291;
1239 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1240 priv->mesh_tlv = 0x100 + 37;
1241 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1242 priv->mesh_tlv = 0;
1243 }
1244 if (priv->mesh_tlv) {
1245 lbs_add_mesh(priv);
1246
1247 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1248 lbs_pr_err("cannot register lbs_mesh attribute\n");
1249 }
1250 }
1251
1252 lbs_debugfs_init_one(priv, dev);
1253
1254 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1255
1256 ret = 0;
1257
1258 done:
1259 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1260 return ret;
1261 }
1262 EXPORT_SYMBOL_GPL(lbs_start_card);
1263
1264
1265 int lbs_stop_card(struct lbs_private *priv)
1266 {
1267 struct net_device *dev = priv->dev;
1268 int ret = -1;
1269 struct cmd_ctrl_node *cmdnode;
1270 unsigned long flags;
1271
1272 lbs_deb_enter(LBS_DEB_MAIN);
1273
1274 netif_stop_queue(priv->dev);
1275 netif_carrier_off(priv->dev);
1276
1277 lbs_debugfs_remove_one(priv);
1278 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1279 if (priv->mesh_tlv)
1280 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1281
1282 /* Flush pending command nodes */
1283 spin_lock_irqsave(&priv->driver_lock, flags);
1284 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1285 cmdnode->result = -ENOENT;
1286 cmdnode->cmdwaitqwoken = 1;
1287 wake_up_interruptible(&cmdnode->cmdwait_q);
1288 }
1289 spin_unlock_irqrestore(&priv->driver_lock, flags);
1290
1291 unregister_netdev(dev);
1292
1293 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1294 return ret;
1295 }
1296 EXPORT_SYMBOL_GPL(lbs_stop_card);
1297
1298
1299 /**
1300 * @brief This function adds mshX interface
1301 *
1302 * @param priv A pointer to the struct lbs_private structure
1303 * @return 0 if successful, -X otherwise
1304 */
1305 static int lbs_add_mesh(struct lbs_private *priv)
1306 {
1307 struct net_device *mesh_dev = NULL;
1308 int ret = 0;
1309
1310 lbs_deb_enter(LBS_DEB_MESH);
1311
1312 /* Allocate a virtual mesh device */
1313 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1314 lbs_deb_mesh("init mshX device failed\n");
1315 ret = -ENOMEM;
1316 goto done;
1317 }
1318 mesh_dev->priv = priv;
1319 priv->mesh_dev = mesh_dev;
1320
1321 mesh_dev->open = lbs_dev_open;
1322 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1323 mesh_dev->stop = lbs_mesh_stop;
1324 mesh_dev->get_stats = lbs_get_stats;
1325 mesh_dev->set_mac_address = lbs_set_mac_address;
1326 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1327 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1328 sizeof(priv->dev->dev_addr));
1329
1330 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1331
1332 #ifdef WIRELESS_EXT
1333 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1334 #endif
1335 /* Register virtual mesh interface */
1336 ret = register_netdev(mesh_dev);
1337 if (ret) {
1338 lbs_pr_err("cannot register mshX virtual interface\n");
1339 goto err_free;
1340 }
1341
1342 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1343 if (ret)
1344 goto err_unregister;
1345
1346 /* Everything successful */
1347 ret = 0;
1348 goto done;
1349
1350 err_unregister:
1351 unregister_netdev(mesh_dev);
1352
1353 err_free:
1354 free_netdev(mesh_dev);
1355
1356 done:
1357 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1358 return ret;
1359 }
1360
1361 static void lbs_remove_mesh(struct lbs_private *priv)
1362 {
1363 struct net_device *mesh_dev;
1364
1365
1366 mesh_dev = priv->mesh_dev;
1367 if (!mesh_dev)
1368 return;
1369
1370 lbs_deb_enter(LBS_DEB_MESH);
1371 netif_stop_queue(mesh_dev);
1372 netif_carrier_off(priv->mesh_dev);
1373 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1374 unregister_netdev(mesh_dev);
1375 priv->mesh_dev = NULL;
1376 free_netdev(mesh_dev);
1377 lbs_deb_leave(LBS_DEB_MESH);
1378 }
1379
1380 /**
1381 * @brief This function finds the CFP in
1382 * region_cfp_table based on region and band parameter.
1383 *
1384 * @param region The region code
1385 * @param band The band
1386 * @param cfp_no A pointer to CFP number
1387 * @return A pointer to CFP
1388 */
1389 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1390 {
1391 int i, end;
1392
1393 lbs_deb_enter(LBS_DEB_MAIN);
1394
1395 end = ARRAY_SIZE(region_cfp_table);
1396
1397 for (i = 0; i < end ; i++) {
1398 lbs_deb_main("region_cfp_table[i].region=%d\n",
1399 region_cfp_table[i].region);
1400 if (region_cfp_table[i].region == region) {
1401 *cfp_no = region_cfp_table[i].cfp_no_BG;
1402 lbs_deb_leave(LBS_DEB_MAIN);
1403 return region_cfp_table[i].cfp_BG;
1404 }
1405 }
1406
1407 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1408 return NULL;
1409 }
1410
1411 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1412 {
1413 int ret = 0;
1414 int i = 0;
1415
1416 struct chan_freq_power *cfp;
1417 int cfp_no;
1418
1419 lbs_deb_enter(LBS_DEB_MAIN);
1420
1421 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1422
1423 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1424 if (cfp != NULL) {
1425 priv->region_channel[i].nrcfp = cfp_no;
1426 priv->region_channel[i].CFP = cfp;
1427 } else {
1428 lbs_deb_main("wrong region code %#x in band B/G\n",
1429 region);
1430 ret = -1;
1431 goto out;
1432 }
1433 priv->region_channel[i].valid = 1;
1434 priv->region_channel[i].region = region;
1435 priv->region_channel[i].band = band;
1436 i++;
1437 out:
1438 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1439 return ret;
1440 }
1441
1442 void lbs_queue_event(struct lbs_private *priv, u32 event)
1443 {
1444 unsigned long flags;
1445
1446 lbs_deb_enter(LBS_DEB_THREAD);
1447 spin_lock_irqsave(&priv->driver_lock, flags);
1448
1449 if (priv->psstate == PS_STATE_SLEEP)
1450 priv->psstate = PS_STATE_AWAKE;
1451
1452 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1453
1454 wake_up_interruptible(&priv->waitq);
1455
1456 spin_unlock_irqrestore(&priv->driver_lock, flags);
1457 lbs_deb_leave(LBS_DEB_THREAD);
1458 }
1459 EXPORT_SYMBOL_GPL(lbs_queue_event);
1460
1461 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1462 {
1463 lbs_deb_enter(LBS_DEB_THREAD);
1464
1465 if (priv->psstate == PS_STATE_SLEEP)
1466 priv->psstate = PS_STATE_AWAKE;
1467
1468 /* Swap buffers by flipping the response index */
1469 BUG_ON(resp_idx > 1);
1470 priv->resp_idx = resp_idx;
1471
1472 wake_up_interruptible(&priv->waitq);
1473
1474 lbs_deb_leave(LBS_DEB_THREAD);
1475 }
1476 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1477
1478 static int __init lbs_init_module(void)
1479 {
1480 lbs_deb_enter(LBS_DEB_MAIN);
1481 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1482 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1483 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1484 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1485 lbs_debugfs_init();
1486 lbs_deb_leave(LBS_DEB_MAIN);
1487 return 0;
1488 }
1489
1490 static void __exit lbs_exit_module(void)
1491 {
1492 lbs_deb_enter(LBS_DEB_MAIN);
1493 lbs_debugfs_remove();
1494 lbs_deb_leave(LBS_DEB_MAIN);
1495 }
1496
1497 /*
1498 * rtap interface support fuctions
1499 */
1500
1501 static int lbs_rtap_open(struct net_device *dev)
1502 {
1503 /* Yes, _stop_ the queue. Because we don't support injection */
1504 lbs_deb_enter(LBS_DEB_MAIN);
1505 netif_carrier_off(dev);
1506 netif_stop_queue(dev);
1507 lbs_deb_leave(LBS_DEB_LEAVE);
1508 return 0;
1509 }
1510
1511 static int lbs_rtap_stop(struct net_device *dev)
1512 {
1513 lbs_deb_enter(LBS_DEB_MAIN);
1514 lbs_deb_leave(LBS_DEB_MAIN);
1515 return 0;
1516 }
1517
1518 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1519 {
1520 netif_stop_queue(dev);
1521 return NETDEV_TX_BUSY;
1522 }
1523
1524 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1525 {
1526 struct lbs_private *priv = dev->priv;
1527 lbs_deb_enter(LBS_DEB_NET);
1528 return &priv->stats;
1529 }
1530
1531
1532 static void lbs_remove_rtap(struct lbs_private *priv)
1533 {
1534 lbs_deb_enter(LBS_DEB_MAIN);
1535 if (priv->rtap_net_dev == NULL)
1536 return;
1537 unregister_netdev(priv->rtap_net_dev);
1538 free_netdev(priv->rtap_net_dev);
1539 priv->rtap_net_dev = NULL;
1540 lbs_deb_leave(LBS_DEB_MAIN);
1541 }
1542
1543 static int lbs_add_rtap(struct lbs_private *priv)
1544 {
1545 int ret = 0;
1546 struct net_device *rtap_dev;
1547
1548 lbs_deb_enter(LBS_DEB_MAIN);
1549 if (priv->rtap_net_dev) {
1550 ret = -EPERM;
1551 goto out;
1552 }
1553
1554 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1555 if (rtap_dev == NULL) {
1556 ret = -ENOMEM;
1557 goto out;
1558 }
1559
1560 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1561 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1562 rtap_dev->open = lbs_rtap_open;
1563 rtap_dev->stop = lbs_rtap_stop;
1564 rtap_dev->get_stats = lbs_rtap_get_stats;
1565 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1566 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1567 rtap_dev->priv = priv;
1568 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1569
1570 ret = register_netdev(rtap_dev);
1571 if (ret) {
1572 free_netdev(rtap_dev);
1573 goto out;
1574 }
1575 priv->rtap_net_dev = rtap_dev;
1576
1577 out:
1578 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1579 return ret;
1580 }
1581
1582 #ifndef CONFIG_IEEE80211
1583 const char *escape_essid(const char *essid, u8 essid_len)
1584 {
1585 static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
1586 const char *s = essid;
1587 char *d = escaped;
1588
1589 if (ieee80211_is_empty_essid(essid, essid_len)) {
1590 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
1591 return escaped;
1592 }
1593
1594 essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
1595 while (essid_len--) {
1596 if (*s == '\0') {
1597 *d++ = '\\';
1598 *d++ = '0';
1599 s++;
1600 } else {
1601 *d++ = *s++;
1602 }
1603 }
1604 *d = '\0';
1605 return escaped;
1606 }
1607 #endif
1608
1609 module_init(lbs_init_module);
1610 module_exit(lbs_exit_module);
1611
1612 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1613 MODULE_AUTHOR("Marvell International Ltd.");
1614 MODULE_LICENSE("GPL");
Linus' kernel tree