1
2
3
4
5
6
7
8
9
10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
12#include <linux/hardirq.h>
13#include <linux/slab.h>
14
15#include <linux/etherdevice.h>
16#include <linux/module.h>
17#include "libertas_tf.h"
18
19
20#define LBTF_FW_VER_MIN 0x05840300
21#define LBTF_FW_VER_MAX 0x0584ffff
22#define QOS_CONTROL_LEN 2
23
24
25unsigned int lbtf_debug;
26EXPORT_SYMBOL_GPL(lbtf_debug);
27module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
28
29struct workqueue_struct *lbtf_wq;
30
31static const struct ieee80211_channel lbtf_channels[] = {
32 { .center_freq = 2412, .hw_value = 1 },
33 { .center_freq = 2417, .hw_value = 2 },
34 { .center_freq = 2422, .hw_value = 3 },
35 { .center_freq = 2427, .hw_value = 4 },
36 { .center_freq = 2432, .hw_value = 5 },
37 { .center_freq = 2437, .hw_value = 6 },
38 { .center_freq = 2442, .hw_value = 7 },
39 { .center_freq = 2447, .hw_value = 8 },
40 { .center_freq = 2452, .hw_value = 9 },
41 { .center_freq = 2457, .hw_value = 10 },
42 { .center_freq = 2462, .hw_value = 11 },
43 { .center_freq = 2467, .hw_value = 12 },
44 { .center_freq = 2472, .hw_value = 13 },
45 { .center_freq = 2484, .hw_value = 14 },
46};
47
48
49static const struct ieee80211_rate lbtf_rates[] = {
50 { .bitrate = 10,
51 .hw_value = 0, },
52 { .bitrate = 20,
53 .hw_value = 1,
54 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
55 { .bitrate = 55,
56 .hw_value = 2,
57 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
58 { .bitrate = 110,
59 .hw_value = 3,
60 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
61 { .bitrate = 60,
62 .hw_value = 5,
63 .flags = 0 },
64 { .bitrate = 90,
65 .hw_value = 6,
66 .flags = 0 },
67 { .bitrate = 120,
68 .hw_value = 7,
69 .flags = 0 },
70 { .bitrate = 180,
71 .hw_value = 8,
72 .flags = 0 },
73 { .bitrate = 240,
74 .hw_value = 9,
75 .flags = 0 },
76 { .bitrate = 360,
77 .hw_value = 10,
78 .flags = 0 },
79 { .bitrate = 480,
80 .hw_value = 11,
81 .flags = 0 },
82 { .bitrate = 540,
83 .hw_value = 12,
84 .flags = 0 },
85};
86
87static void lbtf_cmd_work(struct work_struct *work)
88{
89 struct lbtf_private *priv = container_of(work, struct lbtf_private,
90 cmd_work);
91
92 lbtf_deb_enter(LBTF_DEB_CMD);
93
94 spin_lock_irq(&priv->driver_lock);
95
96 if (priv->cmd_response_rxed) {
97 priv->cmd_response_rxed = 0;
98 spin_unlock_irq(&priv->driver_lock);
99 lbtf_process_rx_command(priv);
100 spin_lock_irq(&priv->driver_lock);
101 }
102
103 if (priv->cmd_timed_out && priv->cur_cmd) {
104 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
105
106 if (++priv->nr_retries > 10) {
107 lbtf_complete_command(priv, cmdnode,
108 -ETIMEDOUT);
109 priv->nr_retries = 0;
110 } else {
111 priv->cur_cmd = NULL;
112
113
114
115 list_add(&cmdnode->list, &priv->cmdpendingq);
116 }
117 }
118 priv->cmd_timed_out = 0;
119 spin_unlock_irq(&priv->driver_lock);
120
121 if (!priv->fw_ready) {
122 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
123 return;
124 }
125
126
127 if (!priv->cur_cmd)
128 lbtf_execute_next_command(priv);
129
130 lbtf_deb_leave(LBTF_DEB_CMD);
131}
132
133
134
135
136
137
138
139
140static int lbtf_setup_firmware(struct lbtf_private *priv)
141{
142 int ret = -1;
143
144 lbtf_deb_enter(LBTF_DEB_FW);
145
146
147
148 eth_broadcast_addr(priv->current_addr);
149 ret = lbtf_update_hw_spec(priv);
150 if (ret) {
151 ret = -1;
152 goto done;
153 }
154
155 lbtf_set_mac_control(priv);
156 lbtf_set_radio_control(priv);
157
158 ret = 0;
159done:
160 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
161 return ret;
162}
163
164
165
166
167
168static void command_timer_fn(struct timer_list *t)
169{
170 struct lbtf_private *priv = from_timer(priv, t, command_timer);
171 unsigned long flags;
172 lbtf_deb_enter(LBTF_DEB_CMD);
173
174 spin_lock_irqsave(&priv->driver_lock, flags);
175
176 if (!priv->cur_cmd) {
177 printk(KERN_DEBUG "libertastf: command timer expired; "
178 "no pending command\n");
179 goto out;
180 }
181
182 printk(KERN_DEBUG "libertas: command %x timed out\n",
183 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
184
185 priv->cmd_timed_out = 1;
186 queue_work(lbtf_wq, &priv->cmd_work);
187out:
188 spin_unlock_irqrestore(&priv->driver_lock, flags);
189 lbtf_deb_leave(LBTF_DEB_CMD);
190}
191
192static int lbtf_init_adapter(struct lbtf_private *priv)
193{
194 lbtf_deb_enter(LBTF_DEB_MAIN);
195 eth_broadcast_addr(priv->current_addr);
196 mutex_init(&priv->lock);
197
198 priv->vif = NULL;
199 timer_setup(&priv->command_timer, command_timer_fn, 0);
200
201 INIT_LIST_HEAD(&priv->cmdfreeq);
202 INIT_LIST_HEAD(&priv->cmdpendingq);
203
204 spin_lock_init(&priv->driver_lock);
205
206
207 if (lbtf_allocate_cmd_buffer(priv))
208 return -1;
209
210 lbtf_deb_leave(LBTF_DEB_MAIN);
211 return 0;
212}
213
214static void lbtf_free_adapter(struct lbtf_private *priv)
215{
216 lbtf_deb_enter(LBTF_DEB_MAIN);
217 lbtf_free_cmd_buffer(priv);
218 del_timer(&priv->command_timer);
219 lbtf_deb_leave(LBTF_DEB_MAIN);
220}
221
222static void lbtf_op_tx(struct ieee80211_hw *hw,
223 struct ieee80211_tx_control *control,
224 struct sk_buff *skb)
225{
226 struct lbtf_private *priv = hw->priv;
227
228 priv->skb_to_tx = skb;
229 queue_work(lbtf_wq, &priv->tx_work);
230
231
232
233
234 ieee80211_stop_queues(priv->hw);
235}
236
237static void lbtf_tx_work(struct work_struct *work)
238{
239 struct lbtf_private *priv = container_of(work, struct lbtf_private,
240 tx_work);
241 unsigned int len;
242 struct ieee80211_tx_info *info;
243 struct txpd *txpd;
244 struct sk_buff *skb = NULL;
245 int err;
246
247 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
248
249 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
250 (!skb_queue_empty(&priv->bc_ps_buf)))
251 skb = skb_dequeue(&priv->bc_ps_buf);
252 else if (priv->skb_to_tx) {
253 skb = priv->skb_to_tx;
254 priv->skb_to_tx = NULL;
255 } else {
256 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
257 return;
258 }
259
260 len = skb->len;
261 info = IEEE80211_SKB_CB(skb);
262 txpd = skb_push(skb, sizeof(struct txpd));
263
264 if (priv->surpriseremoved) {
265 dev_kfree_skb_any(skb);
266 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
267 return;
268 }
269
270 memset(txpd, 0, sizeof(struct txpd));
271
272 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
273 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
274
275
276 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
277 ETH_ALEN);
278 txpd->tx_packet_length = cpu_to_le16(len);
279 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
280 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
281 BUG_ON(priv->tx_skb);
282 spin_lock_irq(&priv->driver_lock);
283 priv->tx_skb = skb;
284 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
285 spin_unlock_irq(&priv->driver_lock);
286 if (err) {
287 dev_kfree_skb_any(skb);
288 priv->tx_skb = NULL;
289 pr_err("TX error: %d", err);
290 }
291 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
292}
293
294static int lbtf_op_start(struct ieee80211_hw *hw)
295{
296 struct lbtf_private *priv = hw->priv;
297 void *card = priv->card;
298 int ret = -1;
299
300 lbtf_deb_enter(LBTF_DEB_MACOPS);
301
302 if (!priv->fw_ready)
303
304 if (priv->hw_prog_firmware(card))
305 goto err_prog_firmware;
306
307
308 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
309 priv->radioon = RADIO_ON;
310 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
311 ret = lbtf_setup_firmware(priv);
312 if (ret)
313 goto err_prog_firmware;
314
315 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
316 (priv->fwrelease > LBTF_FW_VER_MAX)) {
317 ret = -1;
318 goto err_prog_firmware;
319 }
320
321 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
322 lbtf_deb_leave(LBTF_DEB_MACOPS);
323 return 0;
324
325err_prog_firmware:
326 priv->hw_reset_device(card);
327 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programming fw; ret=%d", ret);
328 return ret;
329}
330
331static void lbtf_op_stop(struct ieee80211_hw *hw)
332{
333 struct lbtf_private *priv = hw->priv;
334 unsigned long flags;
335 struct sk_buff *skb;
336
337 struct cmd_ctrl_node *cmdnode;
338
339 lbtf_deb_enter(LBTF_DEB_MACOPS);
340
341
342 spin_lock_irqsave(&priv->driver_lock, flags);
343 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
344 cmdnode->result = -ENOENT;
345 cmdnode->cmdwaitqwoken = 1;
346 wake_up_interruptible(&cmdnode->cmdwait_q);
347 }
348
349 spin_unlock_irqrestore(&priv->driver_lock, flags);
350 cancel_work_sync(&priv->cmd_work);
351 cancel_work_sync(&priv->tx_work);
352 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
353 dev_kfree_skb_any(skb);
354 priv->radioon = RADIO_OFF;
355 lbtf_set_radio_control(priv);
356
357 lbtf_deb_leave(LBTF_DEB_MACOPS);
358}
359
360static int lbtf_op_add_interface(struct ieee80211_hw *hw,
361 struct ieee80211_vif *vif)
362{
363 struct lbtf_private *priv = hw->priv;
364 lbtf_deb_enter(LBTF_DEB_MACOPS);
365 if (priv->vif != NULL)
366 return -EOPNOTSUPP;
367
368 priv->vif = vif;
369 switch (vif->type) {
370 case NL80211_IFTYPE_MESH_POINT:
371 case NL80211_IFTYPE_AP:
372 lbtf_set_mode(priv, LBTF_AP_MODE);
373 break;
374 case NL80211_IFTYPE_STATION:
375 lbtf_set_mode(priv, LBTF_STA_MODE);
376 break;
377 default:
378 priv->vif = NULL;
379 return -EOPNOTSUPP;
380 }
381 lbtf_set_mac_address(priv, (u8 *) vif->addr);
382 lbtf_deb_leave(LBTF_DEB_MACOPS);
383 return 0;
384}
385
386static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
387 struct ieee80211_vif *vif)
388{
389 struct lbtf_private *priv = hw->priv;
390 lbtf_deb_enter(LBTF_DEB_MACOPS);
391
392 if (priv->vif->type == NL80211_IFTYPE_AP ||
393 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
394 lbtf_beacon_ctrl(priv, 0, 0);
395 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
396 lbtf_set_bssid(priv, 0, NULL);
397 priv->vif = NULL;
398 lbtf_deb_leave(LBTF_DEB_MACOPS);
399}
400
401static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
402{
403 struct lbtf_private *priv = hw->priv;
404 struct ieee80211_conf *conf = &hw->conf;
405 lbtf_deb_enter(LBTF_DEB_MACOPS);
406
407 if (conf->chandef.chan->center_freq != priv->cur_freq) {
408 priv->cur_freq = conf->chandef.chan->center_freq;
409 lbtf_set_channel(priv, conf->chandef.chan->hw_value);
410 }
411 lbtf_deb_leave(LBTF_DEB_MACOPS);
412 return 0;
413}
414
415static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
416 struct netdev_hw_addr_list *mc_list)
417{
418 struct lbtf_private *priv = hw->priv;
419 int i;
420 struct netdev_hw_addr *ha;
421 int mc_count = netdev_hw_addr_list_count(mc_list);
422
423 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
424 return mc_count;
425
426 priv->nr_of_multicastmacaddr = mc_count;
427 i = 0;
428 netdev_hw_addr_list_for_each(ha, mc_list)
429 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
430
431 return mc_count;
432}
433
434#define SUPPORTED_FIF_FLAGS FIF_ALLMULTI
435static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
436 unsigned int changed_flags,
437 unsigned int *new_flags,
438 u64 multicast)
439{
440 struct lbtf_private *priv = hw->priv;
441 int old_mac_control = priv->mac_control;
442
443 lbtf_deb_enter(LBTF_DEB_MACOPS);
444
445 changed_flags &= SUPPORTED_FIF_FLAGS;
446 *new_flags &= SUPPORTED_FIF_FLAGS;
447
448 if (!changed_flags) {
449 lbtf_deb_leave(LBTF_DEB_MACOPS);
450 return;
451 }
452
453 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
454 if (*new_flags & (FIF_ALLMULTI) ||
455 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
456 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
457 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
458 } else if (multicast) {
459 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
460 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
461 lbtf_cmd_set_mac_multicast_addr(priv);
462 } else {
463 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
464 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
465 if (priv->nr_of_multicastmacaddr) {
466 priv->nr_of_multicastmacaddr = 0;
467 lbtf_cmd_set_mac_multicast_addr(priv);
468 }
469 }
470
471
472 if (priv->mac_control != old_mac_control)
473 lbtf_set_mac_control(priv);
474
475 lbtf_deb_leave(LBTF_DEB_MACOPS);
476}
477
478static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
479 struct ieee80211_vif *vif,
480 struct ieee80211_bss_conf *bss_conf,
481 u32 changes)
482{
483 struct lbtf_private *priv = hw->priv;
484 struct sk_buff *beacon;
485 lbtf_deb_enter(LBTF_DEB_MACOPS);
486
487 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
488 switch (priv->vif->type) {
489 case NL80211_IFTYPE_AP:
490 case NL80211_IFTYPE_MESH_POINT:
491 beacon = ieee80211_beacon_get(hw, vif);
492 if (beacon) {
493 lbtf_beacon_set(priv, beacon);
494 kfree_skb(beacon);
495 lbtf_beacon_ctrl(priv, 1,
496 bss_conf->beacon_int);
497 }
498 break;
499 default:
500 break;
501 }
502 }
503
504 if (changes & BSS_CHANGED_BSSID) {
505 bool activate = !is_zero_ether_addr(bss_conf->bssid);
506 lbtf_set_bssid(priv, activate, bss_conf->bssid);
507 }
508
509 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
510 if (bss_conf->use_short_preamble)
511 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
512 else
513 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
514 lbtf_set_radio_control(priv);
515 }
516
517 lbtf_deb_leave(LBTF_DEB_MACOPS);
518}
519
520static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
521 struct survey_info *survey)
522{
523 struct lbtf_private *priv = hw->priv;
524 struct ieee80211_conf *conf = &hw->conf;
525
526 if (idx != 0)
527 return -ENOENT;
528
529 survey->channel = conf->chandef.chan;
530 survey->filled = SURVEY_INFO_NOISE_DBM;
531 survey->noise = priv->noise;
532
533 return 0;
534}
535
536static const struct ieee80211_ops lbtf_ops = {
537 .tx = lbtf_op_tx,
538 .start = lbtf_op_start,
539 .stop = lbtf_op_stop,
540 .add_interface = lbtf_op_add_interface,
541 .remove_interface = lbtf_op_remove_interface,
542 .config = lbtf_op_config,
543 .prepare_multicast = lbtf_op_prepare_multicast,
544 .configure_filter = lbtf_op_configure_filter,
545 .bss_info_changed = lbtf_op_bss_info_changed,
546 .get_survey = lbtf_op_get_survey,
547};
548
549int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
550{
551 struct ieee80211_rx_status stats;
552 struct rxpd *prxpd;
553 int need_padding;
554 unsigned int flags;
555 struct ieee80211_hdr *hdr;
556
557 lbtf_deb_enter(LBTF_DEB_RX);
558
559 prxpd = (struct rxpd *) skb->data;
560
561 memset(&stats, 0, sizeof(stats));
562 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
563 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
564 stats.freq = priv->cur_freq;
565 stats.band = NL80211_BAND_2GHZ;
566 stats.signal = prxpd->snr;
567 priv->noise = prxpd->nf;
568
569 if (prxpd->rx_rate > 4)
570 --prxpd->rx_rate;
571 stats.rate_idx = prxpd->rx_rate;
572 skb_pull(skb, sizeof(struct rxpd));
573
574 hdr = (struct ieee80211_hdr *)skb->data;
575 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
576
577 need_padding = ieee80211_is_data_qos(hdr->frame_control);
578 need_padding ^= ieee80211_has_a4(hdr->frame_control);
579 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
580 (*ieee80211_get_qos_ctl(hdr) &
581 IEEE80211_QOS_CTL_A_MSDU_PRESENT);
582
583 if (need_padding) {
584 memmove(skb->data + 2, skb->data, skb->len);
585 skb_reserve(skb, 2);
586 }
587
588 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
589
590 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
591 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
592 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
593 min_t(unsigned int, skb->len, 100));
594
595 ieee80211_rx_irqsafe(priv->hw, skb);
596
597 lbtf_deb_leave(LBTF_DEB_RX);
598 return 0;
599}
600EXPORT_SYMBOL_GPL(lbtf_rx);
601
602
603
604
605
606
607
608
609struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
610{
611 struct ieee80211_hw *hw;
612 struct lbtf_private *priv = NULL;
613
614 lbtf_deb_enter(LBTF_DEB_MAIN);
615
616 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
617 if (!hw)
618 goto done;
619
620 priv = hw->priv;
621 if (lbtf_init_adapter(priv))
622 goto err_init_adapter;
623
624 priv->hw = hw;
625 priv->card = card;
626 priv->tx_skb = NULL;
627
628 hw->queues = 1;
629 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
630 hw->extra_tx_headroom = sizeof(struct txpd);
631 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
632 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
633 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
634 priv->band.bitrates = priv->rates;
635 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
636 priv->band.channels = priv->channels;
637 hw->wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
638 hw->wiphy->interface_modes =
639 BIT(NL80211_IFTYPE_STATION) |
640 BIT(NL80211_IFTYPE_ADHOC);
641 skb_queue_head_init(&priv->bc_ps_buf);
642
643 wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
644
645 SET_IEEE80211_DEV(hw, dmdev);
646
647 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
648 INIT_WORK(&priv->tx_work, lbtf_tx_work);
649 if (ieee80211_register_hw(hw))
650 goto err_init_adapter;
651
652 goto done;
653
654err_init_adapter:
655 lbtf_free_adapter(priv);
656 ieee80211_free_hw(hw);
657 priv = NULL;
658
659done:
660 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
661 return priv;
662}
663EXPORT_SYMBOL_GPL(lbtf_add_card);
664
665
666int lbtf_remove_card(struct lbtf_private *priv)
667{
668 struct ieee80211_hw *hw = priv->hw;
669
670 lbtf_deb_enter(LBTF_DEB_MAIN);
671
672 priv->surpriseremoved = 1;
673 del_timer(&priv->command_timer);
674 lbtf_free_adapter(priv);
675 priv->hw = NULL;
676 ieee80211_unregister_hw(hw);
677 ieee80211_free_hw(hw);
678
679 lbtf_deb_leave(LBTF_DEB_MAIN);
680 return 0;
681}
682EXPORT_SYMBOL_GPL(lbtf_remove_card);
683
684void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
685{
686 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
687
688 ieee80211_tx_info_clear_status(info);
689
690
691
692
693
694
695 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
696 info->flags |= IEEE80211_TX_STAT_ACK;
697 skb_pull(priv->tx_skb, sizeof(struct txpd));
698 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
699 priv->tx_skb = NULL;
700 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
701 ieee80211_wake_queues(priv->hw);
702 else
703 queue_work(lbtf_wq, &priv->tx_work);
704}
705EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
706
707void lbtf_bcn_sent(struct lbtf_private *priv)
708{
709 struct sk_buff *skb = NULL;
710
711 if (priv->vif->type != NL80211_IFTYPE_AP)
712 return;
713
714 if (skb_queue_empty(&priv->bc_ps_buf)) {
715 bool tx_buff_bc = false;
716
717 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
718 skb_queue_tail(&priv->bc_ps_buf, skb);
719 tx_buff_bc = true;
720 }
721 if (tx_buff_bc) {
722 ieee80211_stop_queues(priv->hw);
723 queue_work(lbtf_wq, &priv->tx_work);
724 }
725 }
726
727 skb = ieee80211_beacon_get(priv->hw, priv->vif);
728
729 if (skb) {
730 lbtf_beacon_set(priv, skb);
731 kfree_skb(skb);
732 }
733}
734EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
735
736static int __init lbtf_init_module(void)
737{
738 lbtf_deb_enter(LBTF_DEB_MAIN);
739 lbtf_wq = alloc_workqueue("libertastf", WQ_MEM_RECLAIM, 0);
740 if (lbtf_wq == NULL) {
741 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
742 return -ENOMEM;
743 }
744 lbtf_deb_leave(LBTF_DEB_MAIN);
745 return 0;
746}
747
748static void __exit lbtf_exit_module(void)
749{
750 lbtf_deb_enter(LBTF_DEB_MAIN);
751 destroy_workqueue(lbtf_wq);
752 lbtf_deb_leave(LBTF_DEB_MAIN);
753}
754
755module_init(lbtf_init_module);
756module_exit(lbtf_exit_module);
757
758MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
759MODULE_AUTHOR("Cozybit Inc.");
760MODULE_LICENSE("GPL");
761
