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Linux 4.4.145
[linux/fpc-iii.git] / drivers / net / wireless / libertas_tf / main.c
bloba47f0acc099a581447dda6ca16b5eb4c561e25d7
1 /*
2 * Copyright (C) 2008, cozybit Inc.
3 * Copyright (C) 2003-2006, Marvell International Ltd.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
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 #define DRIVER_RELEASE_VERSION "004.p0"
20 /* thinfirm version: 5.132.X.pX */
21 #define LBTF_FW_VER_MIN 0x05840300
22 #define LBTF_FW_VER_MAX 0x0584ffff
23 #define QOS_CONTROL_LEN 2
24
25 /* Module parameters */
26 unsigned int lbtf_debug;
27 EXPORT_SYMBOL_GPL(lbtf_debug);
28 module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
29
30 static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
31 #ifdef DEBUG
32 "-dbg"
33 #endif
34 "";
35
36 struct workqueue_struct *lbtf_wq;
37
38 static const struct ieee80211_channel lbtf_channels[] = {
39 { .center_freq = 2412, .hw_value = 1 },
40 { .center_freq = 2417, .hw_value = 2 },
41 { .center_freq = 2422, .hw_value = 3 },
42 { .center_freq = 2427, .hw_value = 4 },
43 { .center_freq = 2432, .hw_value = 5 },
44 { .center_freq = 2437, .hw_value = 6 },
45 { .center_freq = 2442, .hw_value = 7 },
46 { .center_freq = 2447, .hw_value = 8 },
47 { .center_freq = 2452, .hw_value = 9 },
48 { .center_freq = 2457, .hw_value = 10 },
49 { .center_freq = 2462, .hw_value = 11 },
50 { .center_freq = 2467, .hw_value = 12 },
51 { .center_freq = 2472, .hw_value = 13 },
52 { .center_freq = 2484, .hw_value = 14 },
53 };
54
55 /* This table contains the hardware specific values for the modulation rates. */
56 static const struct ieee80211_rate lbtf_rates[] = {
57 { .bitrate = 10,
58 .hw_value = 0, },
59 { .bitrate = 20,
60 .hw_value = 1,
61 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
62 { .bitrate = 55,
63 .hw_value = 2,
64 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
65 { .bitrate = 110,
66 .hw_value = 3,
67 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
68 { .bitrate = 60,
69 .hw_value = 5,
70 .flags = 0 },
71 { .bitrate = 90,
72 .hw_value = 6,
73 .flags = 0 },
74 { .bitrate = 120,
75 .hw_value = 7,
76 .flags = 0 },
77 { .bitrate = 180,
78 .hw_value = 8,
79 .flags = 0 },
80 { .bitrate = 240,
81 .hw_value = 9,
82 .flags = 0 },
83 { .bitrate = 360,
84 .hw_value = 10,
85 .flags = 0 },
86 { .bitrate = 480,
87 .hw_value = 11,
88 .flags = 0 },
89 { .bitrate = 540,
90 .hw_value = 12,
91 .flags = 0 },
92 };
93
94 static void lbtf_cmd_work(struct work_struct *work)
95 {
96 struct lbtf_private *priv = container_of(work, struct lbtf_private,
97 cmd_work);
98
99 lbtf_deb_enter(LBTF_DEB_CMD);
100
101 spin_lock_irq(&priv->driver_lock);
102 /* command response? */
103 if (priv->cmd_response_rxed) {
104 priv->cmd_response_rxed = 0;
105 spin_unlock_irq(&priv->driver_lock);
106 lbtf_process_rx_command(priv);
107 spin_lock_irq(&priv->driver_lock);
108 }
109
110 if (priv->cmd_timed_out && priv->cur_cmd) {
111 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
112
113 if (++priv->nr_retries > 10) {
114 lbtf_complete_command(priv, cmdnode,
115 -ETIMEDOUT);
116 priv->nr_retries = 0;
117 } else {
118 priv->cur_cmd = NULL;
119
120 /* Stick it back at the _top_ of the pending
121 * queue for immediate resubmission */
122 list_add(&cmdnode->list, &priv->cmdpendingq);
123 }
124 }
125 priv->cmd_timed_out = 0;
126 spin_unlock_irq(&priv->driver_lock);
127
128 if (!priv->fw_ready) {
129 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
130 return;
131 }
132
133 /* Execute the next command */
134 if (!priv->cur_cmd)
135 lbtf_execute_next_command(priv);
136
137 lbtf_deb_leave(LBTF_DEB_CMD);
138 }
139
140 /**
141 * lbtf_setup_firmware: initialize firmware.
142 *
143 * @priv A pointer to struct lbtf_private structure
144 *
145 * Returns: 0 on success.
146 */
147 static int lbtf_setup_firmware(struct lbtf_private *priv)
148 {
149 int ret = -1;
150
151 lbtf_deb_enter(LBTF_DEB_FW);
152 /*
153 * Read priv address from HW
154 */
155 eth_broadcast_addr(priv->current_addr);
156 ret = lbtf_update_hw_spec(priv);
157 if (ret) {
158 ret = -1;
159 goto done;
160 }
161
162 lbtf_set_mac_control(priv);
163 lbtf_set_radio_control(priv);
164
165 ret = 0;
166 done:
167 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
168 return ret;
169 }
170
171 /**
172 * This function handles the timeout of command sending.
173 * It will re-send the same command again.
174 */
175 static void command_timer_fn(unsigned long data)
176 {
177 struct lbtf_private *priv = (struct lbtf_private *)data;
178 unsigned long flags;
179 lbtf_deb_enter(LBTF_DEB_CMD);
180
181 spin_lock_irqsave(&priv->driver_lock, flags);
182
183 if (!priv->cur_cmd) {
184 printk(KERN_DEBUG "libertastf: command timer expired; "
185 "no pending command\n");
186 goto out;
187 }
188
189 printk(KERN_DEBUG "libertas: command %x timed out\n",
190 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
191
192 priv->cmd_timed_out = 1;
193 queue_work(lbtf_wq, &priv->cmd_work);
194 out:
195 spin_unlock_irqrestore(&priv->driver_lock, flags);
196 lbtf_deb_leave(LBTF_DEB_CMD);
197 }
198
199 static int lbtf_init_adapter(struct lbtf_private *priv)
200 {
201 lbtf_deb_enter(LBTF_DEB_MAIN);
202 eth_broadcast_addr(priv->current_addr);
203 mutex_init(&priv->lock);
204
205 priv->vif = NULL;
206 setup_timer(&priv->command_timer, command_timer_fn,
207 (unsigned long)priv);
208
209 INIT_LIST_HEAD(&priv->cmdfreeq);
210 INIT_LIST_HEAD(&priv->cmdpendingq);
211
212 spin_lock_init(&priv->driver_lock);
213
214 /* Allocate the command buffers */
215 if (lbtf_allocate_cmd_buffer(priv))
216 return -1;
217
218 lbtf_deb_leave(LBTF_DEB_MAIN);
219 return 0;
220 }
221
222 static void lbtf_free_adapter(struct lbtf_private *priv)
223 {
224 lbtf_deb_enter(LBTF_DEB_MAIN);
225 lbtf_free_cmd_buffer(priv);
226 del_timer(&priv->command_timer);
227 lbtf_deb_leave(LBTF_DEB_MAIN);
228 }
229
230 static void lbtf_op_tx(struct ieee80211_hw *hw,
231 struct ieee80211_tx_control *control,
232 struct sk_buff *skb)
233 {
234 struct lbtf_private *priv = hw->priv;
235
236 priv->skb_to_tx = skb;
237 queue_work(lbtf_wq, &priv->tx_work);
238 /*
239 * queue will be restarted when we receive transmission feedback if
240 * there are no buffered multicast frames to send
241 */
242 ieee80211_stop_queues(priv->hw);
243 }
244
245 static void lbtf_tx_work(struct work_struct *work)
246 {
247 struct lbtf_private *priv = container_of(work, struct lbtf_private,
248 tx_work);
249 unsigned int len;
250 struct ieee80211_tx_info *info;
251 struct txpd *txpd;
252 struct sk_buff *skb = NULL;
253 int err;
254
255 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
256
257 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
258 (!skb_queue_empty(&priv->bc_ps_buf)))
259 skb = skb_dequeue(&priv->bc_ps_buf);
260 else if (priv->skb_to_tx) {
261 skb = priv->skb_to_tx;
262 priv->skb_to_tx = NULL;
263 } else {
264 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
265 return;
266 }
267
268 len = skb->len;
269 info = IEEE80211_SKB_CB(skb);
270 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
271
272 if (priv->surpriseremoved) {
273 dev_kfree_skb_any(skb);
274 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
275 return;
276 }
277
278 memset(txpd, 0, sizeof(struct txpd));
279 /* Activate per-packet rate selection */
280 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
281 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
282
283 /* copy destination address from 802.11 header */
284 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
285 ETH_ALEN);
286 txpd->tx_packet_length = cpu_to_le16(len);
287 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
288 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
289 BUG_ON(priv->tx_skb);
290 spin_lock_irq(&priv->driver_lock);
291 priv->tx_skb = skb;
292 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
293 spin_unlock_irq(&priv->driver_lock);
294 if (err) {
295 dev_kfree_skb_any(skb);
296 priv->tx_skb = NULL;
297 pr_err("TX error: %d", err);
298 }
299 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
300 }
301
302 static int lbtf_op_start(struct ieee80211_hw *hw)
303 {
304 struct lbtf_private *priv = hw->priv;
305 void *card = priv->card;
306 int ret = -1;
307
308 lbtf_deb_enter(LBTF_DEB_MACOPS);
309
310 if (!priv->fw_ready)
311 /* Upload firmware */
312 if (priv->hw_prog_firmware(card))
313 goto err_prog_firmware;
314
315 /* poke the firmware */
316 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
317 priv->radioon = RADIO_ON;
318 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
319 ret = lbtf_setup_firmware(priv);
320 if (ret)
321 goto err_prog_firmware;
322
323 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
324 (priv->fwrelease > LBTF_FW_VER_MAX)) {
325 ret = -1;
326 goto err_prog_firmware;
327 }
328
329 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
330 lbtf_deb_leave(LBTF_DEB_MACOPS);
331 return 0;
332
333 err_prog_firmware:
334 priv->hw_reset_device(card);
335 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programming fw; ret=%d", ret);
336 return ret;
337 }
338
339 static void lbtf_op_stop(struct ieee80211_hw *hw)
340 {
341 struct lbtf_private *priv = hw->priv;
342 unsigned long flags;
343 struct sk_buff *skb;
344
345 struct cmd_ctrl_node *cmdnode;
346
347 lbtf_deb_enter(LBTF_DEB_MACOPS);
348
349 /* Flush pending command nodes */
350 spin_lock_irqsave(&priv->driver_lock, flags);
351 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
352 cmdnode->result = -ENOENT;
353 cmdnode->cmdwaitqwoken = 1;
354 wake_up_interruptible(&cmdnode->cmdwait_q);
355 }
356
357 spin_unlock_irqrestore(&priv->driver_lock, flags);
358 cancel_work_sync(&priv->cmd_work);
359 cancel_work_sync(&priv->tx_work);
360 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
361 dev_kfree_skb_any(skb);
362 priv->radioon = RADIO_OFF;
363 lbtf_set_radio_control(priv);
364
365 lbtf_deb_leave(LBTF_DEB_MACOPS);
366 }
367
368 static int lbtf_op_add_interface(struct ieee80211_hw *hw,
369 struct ieee80211_vif *vif)
370 {
371 struct lbtf_private *priv = hw->priv;
372 lbtf_deb_enter(LBTF_DEB_MACOPS);
373 if (priv->vif != NULL)
374 return -EOPNOTSUPP;
375
376 priv->vif = vif;
377 switch (vif->type) {
378 case NL80211_IFTYPE_MESH_POINT:
379 case NL80211_IFTYPE_AP:
380 lbtf_set_mode(priv, LBTF_AP_MODE);
381 break;
382 case NL80211_IFTYPE_STATION:
383 lbtf_set_mode(priv, LBTF_STA_MODE);
384 break;
385 default:
386 priv->vif = NULL;
387 return -EOPNOTSUPP;
388 }
389 lbtf_set_mac_address(priv, (u8 *) vif->addr);
390 lbtf_deb_leave(LBTF_DEB_MACOPS);
391 return 0;
392 }
393
394 static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
395 struct ieee80211_vif *vif)
396 {
397 struct lbtf_private *priv = hw->priv;
398 lbtf_deb_enter(LBTF_DEB_MACOPS);
399
400 if (priv->vif->type == NL80211_IFTYPE_AP ||
401 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
402 lbtf_beacon_ctrl(priv, 0, 0);
403 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
404 lbtf_set_bssid(priv, 0, NULL);
405 priv->vif = NULL;
406 lbtf_deb_leave(LBTF_DEB_MACOPS);
407 }
408
409 static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
410 {
411 struct lbtf_private *priv = hw->priv;
412 struct ieee80211_conf *conf = &hw->conf;
413 lbtf_deb_enter(LBTF_DEB_MACOPS);
414
415 if (conf->chandef.chan->center_freq != priv->cur_freq) {
416 priv->cur_freq = conf->chandef.chan->center_freq;
417 lbtf_set_channel(priv, conf->chandef.chan->hw_value);
418 }
419 lbtf_deb_leave(LBTF_DEB_MACOPS);
420 return 0;
421 }
422
423 static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
424 struct netdev_hw_addr_list *mc_list)
425 {
426 struct lbtf_private *priv = hw->priv;
427 int i;
428 struct netdev_hw_addr *ha;
429 int mc_count = netdev_hw_addr_list_count(mc_list);
430
431 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
432 return mc_count;
433
434 priv->nr_of_multicastmacaddr = mc_count;
435 i = 0;
436 netdev_hw_addr_list_for_each(ha, mc_list)
437 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
438
439 return mc_count;
440 }
441
442 #define SUPPORTED_FIF_FLAGS FIF_ALLMULTI
443 static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
444 unsigned int changed_flags,
445 unsigned int *new_flags,
446 u64 multicast)
447 {
448 struct lbtf_private *priv = hw->priv;
449 int old_mac_control = priv->mac_control;
450
451 lbtf_deb_enter(LBTF_DEB_MACOPS);
452
453 changed_flags &= SUPPORTED_FIF_FLAGS;
454 *new_flags &= SUPPORTED_FIF_FLAGS;
455
456 if (!changed_flags) {
457 lbtf_deb_leave(LBTF_DEB_MACOPS);
458 return;
459 }
460
461 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
462 if (*new_flags & (FIF_ALLMULTI) ||
463 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
464 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
465 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
466 } else if (multicast) {
467 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
468 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
469 lbtf_cmd_set_mac_multicast_addr(priv);
470 } else {
471 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
472 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
473 if (priv->nr_of_multicastmacaddr) {
474 priv->nr_of_multicastmacaddr = 0;
475 lbtf_cmd_set_mac_multicast_addr(priv);
476 }
477 }
478
479
480 if (priv->mac_control != old_mac_control)
481 lbtf_set_mac_control(priv);
482
483 lbtf_deb_leave(LBTF_DEB_MACOPS);
484 }
485
486 static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
487 struct ieee80211_vif *vif,
488 struct ieee80211_bss_conf *bss_conf,
489 u32 changes)
490 {
491 struct lbtf_private *priv = hw->priv;
492 struct sk_buff *beacon;
493 lbtf_deb_enter(LBTF_DEB_MACOPS);
494
495 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
496 switch (priv->vif->type) {
497 case NL80211_IFTYPE_AP:
498 case NL80211_IFTYPE_MESH_POINT:
499 beacon = ieee80211_beacon_get(hw, vif);
500 if (beacon) {
501 lbtf_beacon_set(priv, beacon);
502 kfree_skb(beacon);
503 lbtf_beacon_ctrl(priv, 1,
504 bss_conf->beacon_int);
505 }
506 break;
507 default:
508 break;
509 }
510 }
511
512 if (changes & BSS_CHANGED_BSSID) {
513 bool activate = !is_zero_ether_addr(bss_conf->bssid);
514 lbtf_set_bssid(priv, activate, bss_conf->bssid);
515 }
516
517 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
518 if (bss_conf->use_short_preamble)
519 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
520 else
521 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
522 lbtf_set_radio_control(priv);
523 }
524
525 lbtf_deb_leave(LBTF_DEB_MACOPS);
526 }
527
528 static int lbtf_op_get_survey(struct ieee80211_hw *hw, int idx,
529 struct survey_info *survey)
530 {
531 struct lbtf_private *priv = hw->priv;
532 struct ieee80211_conf *conf = &hw->conf;
533
534 if (idx != 0)
535 return -ENOENT;
536
537 survey->channel = conf->chandef.chan;
538 survey->filled = SURVEY_INFO_NOISE_DBM;
539 survey->noise = priv->noise;
540
541 return 0;
542 }
543
544 static const struct ieee80211_ops lbtf_ops = {
545 .tx = lbtf_op_tx,
546 .start = lbtf_op_start,
547 .stop = lbtf_op_stop,
548 .add_interface = lbtf_op_add_interface,
549 .remove_interface = lbtf_op_remove_interface,
550 .config = lbtf_op_config,
551 .prepare_multicast = lbtf_op_prepare_multicast,
552 .configure_filter = lbtf_op_configure_filter,
553 .bss_info_changed = lbtf_op_bss_info_changed,
554 .get_survey = lbtf_op_get_survey,
555 };
556
557 int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
558 {
559 struct ieee80211_rx_status stats;
560 struct rxpd *prxpd;
561 int need_padding;
562 unsigned int flags;
563 struct ieee80211_hdr *hdr;
564
565 lbtf_deb_enter(LBTF_DEB_RX);
566
567 prxpd = (struct rxpd *) skb->data;
568
569 memset(&stats, 0, sizeof(stats));
570 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
571 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
572 stats.freq = priv->cur_freq;
573 stats.band = IEEE80211_BAND_2GHZ;
574 stats.signal = prxpd->snr;
575 priv->noise = prxpd->nf;
576 /* Marvell rate index has a hole at value 4 */
577 if (prxpd->rx_rate > 4)
578 --prxpd->rx_rate;
579 stats.rate_idx = prxpd->rx_rate;
580 skb_pull(skb, sizeof(struct rxpd));
581
582 hdr = (struct ieee80211_hdr *)skb->data;
583 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
584
585 need_padding = ieee80211_is_data_qos(hdr->frame_control);
586 need_padding ^= ieee80211_has_a4(hdr->frame_control);
587 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
588 (*ieee80211_get_qos_ctl(hdr) &
589 IEEE80211_QOS_CTL_A_MSDU_PRESENT);
590
591 if (need_padding) {
592 memmove(skb->data + 2, skb->data, skb->len);
593 skb_reserve(skb, 2);
594 }
595
596 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
597
598 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
599 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
600 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
601 min_t(unsigned int, skb->len, 100));
602
603 ieee80211_rx_irqsafe(priv->hw, skb);
604
605 lbtf_deb_leave(LBTF_DEB_RX);
606 return 0;
607 }
608 EXPORT_SYMBOL_GPL(lbtf_rx);
609
610 /**
611 * lbtf_add_card: Add and initialize the card, no fw upload yet.
612 *
613 * @card A pointer to card
614 *
615 * Returns: pointer to struct lbtf_priv.
616 */
617 struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
618 {
619 struct ieee80211_hw *hw;
620 struct lbtf_private *priv = NULL;
621
622 lbtf_deb_enter(LBTF_DEB_MAIN);
623
624 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
625 if (!hw)
626 goto done;
627
628 priv = hw->priv;
629 if (lbtf_init_adapter(priv))
630 goto err_init_adapter;
631
632 priv->hw = hw;
633 priv->card = card;
634 priv->tx_skb = NULL;
635
636 hw->queues = 1;
637 ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
638 hw->extra_tx_headroom = sizeof(struct txpd);
639 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
640 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
641 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
642 priv->band.bitrates = priv->rates;
643 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
644 priv->band.channels = priv->channels;
645 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
646 hw->wiphy->interface_modes =
647 BIT(NL80211_IFTYPE_STATION) |
648 BIT(NL80211_IFTYPE_ADHOC);
649 skb_queue_head_init(&priv->bc_ps_buf);
650
651 SET_IEEE80211_DEV(hw, dmdev);
652
653 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
654 INIT_WORK(&priv->tx_work, lbtf_tx_work);
655 if (ieee80211_register_hw(hw))
656 goto err_init_adapter;
657
658 goto done;
659
660 err_init_adapter:
661 lbtf_free_adapter(priv);
662 ieee80211_free_hw(hw);
663 priv = NULL;
664
665 done:
666 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
667 return priv;
668 }
669 EXPORT_SYMBOL_GPL(lbtf_add_card);
670
671
672 int lbtf_remove_card(struct lbtf_private *priv)
673 {
674 struct ieee80211_hw *hw = priv->hw;
675
676 lbtf_deb_enter(LBTF_DEB_MAIN);
677
678 priv->surpriseremoved = 1;
679 del_timer(&priv->command_timer);
680 lbtf_free_adapter(priv);
681 priv->hw = NULL;
682 ieee80211_unregister_hw(hw);
683 ieee80211_free_hw(hw);
684
685 lbtf_deb_leave(LBTF_DEB_MAIN);
686 return 0;
687 }
688 EXPORT_SYMBOL_GPL(lbtf_remove_card);
689
690 void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
691 {
692 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
693
694 ieee80211_tx_info_clear_status(info);
695 /*
696 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
697 * default pid rc algorithm.
698 *
699 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
700 */
701 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
702 info->flags |= IEEE80211_TX_STAT_ACK;
703 skb_pull(priv->tx_skb, sizeof(struct txpd));
704 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
705 priv->tx_skb = NULL;
706 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
707 ieee80211_wake_queues(priv->hw);
708 else
709 queue_work(lbtf_wq, &priv->tx_work);
710 }
711 EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
712
713 void lbtf_bcn_sent(struct lbtf_private *priv)
714 {
715 struct sk_buff *skb = NULL;
716
717 if (priv->vif->type != NL80211_IFTYPE_AP)
718 return;
719
720 if (skb_queue_empty(&priv->bc_ps_buf)) {
721 bool tx_buff_bc = false;
722
723 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
724 skb_queue_tail(&priv->bc_ps_buf, skb);
725 tx_buff_bc = true;
726 }
727 if (tx_buff_bc) {
728 ieee80211_stop_queues(priv->hw);
729 queue_work(lbtf_wq, &priv->tx_work);
730 }
731 }
732
733 skb = ieee80211_beacon_get(priv->hw, priv->vif);
734
735 if (skb) {
736 lbtf_beacon_set(priv, skb);
737 kfree_skb(skb);
738 }
739 }
740 EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
741
742 static int __init lbtf_init_module(void)
743 {
744 lbtf_deb_enter(LBTF_DEB_MAIN);
745 lbtf_wq = create_workqueue("libertastf");
746 if (lbtf_wq == NULL) {
747 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
748 return -ENOMEM;
749 }
750 lbtf_deb_leave(LBTF_DEB_MAIN);
751 return 0;
752 }
753
754 static void __exit lbtf_exit_module(void)
755 {
756 lbtf_deb_enter(LBTF_DEB_MAIN);
757 destroy_workqueue(lbtf_wq);
758 lbtf_deb_leave(LBTF_DEB_MAIN);
759 }
760
761 module_init(lbtf_init_module);
762 module_exit(lbtf_exit_module);
763
764 MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
765 MODULE_AUTHOR("Cozybit Inc.");
766 MODULE_LICENSE("GPL");
Linux with added FPC-III support