blob: 6ab30033c26c07fff18b1c54a0fc5d1bd19cca82 [file] [log] [blame]
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -07001/*
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#include "libertas_tf.h"
11#include "linux/etherdevice.h"
12
13#define DRIVER_RELEASE_VERSION "004.p0"
14/* thinfirm version: 5.132.X.pX */
15#define LBTF_FW_VER_MIN 0x05840300
16#define LBTF_FW_VER_MAX 0x0584ffff
17#define QOS_CONTROL_LEN 2
18
19static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION;
20struct workqueue_struct *lbtf_wq;
21
22static const struct ieee80211_channel lbtf_channels[] = {
23 { .center_freq = 2412, .hw_value = 1 },
24 { .center_freq = 2417, .hw_value = 2 },
25 { .center_freq = 2422, .hw_value = 3 },
26 { .center_freq = 2427, .hw_value = 4 },
27 { .center_freq = 2432, .hw_value = 5 },
28 { .center_freq = 2437, .hw_value = 6 },
29 { .center_freq = 2442, .hw_value = 7 },
30 { .center_freq = 2447, .hw_value = 8 },
31 { .center_freq = 2452, .hw_value = 9 },
32 { .center_freq = 2457, .hw_value = 10 },
33 { .center_freq = 2462, .hw_value = 11 },
34 { .center_freq = 2467, .hw_value = 12 },
35 { .center_freq = 2472, .hw_value = 13 },
36 { .center_freq = 2484, .hw_value = 14 },
37};
38
39/* This table contains the hardware specific values for the modulation rates. */
40static const struct ieee80211_rate lbtf_rates[] = {
41 { .bitrate = 10,
42 .hw_value = 0, },
43 { .bitrate = 20,
44 .hw_value = 1,
45 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
46 { .bitrate = 55,
47 .hw_value = 2,
48 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
49 { .bitrate = 110,
50 .hw_value = 3,
51 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
52 { .bitrate = 60,
53 .hw_value = 5,
54 .flags = 0 },
55 { .bitrate = 90,
56 .hw_value = 6,
57 .flags = 0 },
58 { .bitrate = 120,
59 .hw_value = 7,
60 .flags = 0 },
61 { .bitrate = 180,
62 .hw_value = 8,
63 .flags = 0 },
64 { .bitrate = 240,
65 .hw_value = 9,
66 .flags = 0 },
67 { .bitrate = 360,
68 .hw_value = 10,
69 .flags = 0 },
70 { .bitrate = 480,
71 .hw_value = 11,
72 .flags = 0 },
73 { .bitrate = 540,
74 .hw_value = 12,
75 .flags = 0 },
76};
77
78static void lbtf_cmd_work(struct work_struct *work)
79{
80 struct lbtf_private *priv = container_of(work, struct lbtf_private,
81 cmd_work);
82 spin_lock_irq(&priv->driver_lock);
83 /* command response? */
84 if (priv->cmd_response_rxed) {
85 priv->cmd_response_rxed = 0;
86 spin_unlock_irq(&priv->driver_lock);
87 lbtf_process_rx_command(priv);
88 spin_lock_irq(&priv->driver_lock);
89 }
90
91 if (priv->cmd_timed_out && priv->cur_cmd) {
92 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
93
94 if (++priv->nr_retries > 10) {
95 lbtf_complete_command(priv, cmdnode,
96 -ETIMEDOUT);
97 priv->nr_retries = 0;
98 } else {
99 priv->cur_cmd = NULL;
100
101 /* Stick it back at the _top_ of the pending
102 * queue for immediate resubmission */
103 list_add(&cmdnode->list, &priv->cmdpendingq);
104 }
105 }
106 priv->cmd_timed_out = 0;
107 spin_unlock_irq(&priv->driver_lock);
108
109 if (!priv->fw_ready)
110 return;
111 /* Execute the next command */
112 if (!priv->cur_cmd)
113 lbtf_execute_next_command(priv);
114}
115
116/**
117 * lbtf_setup_firmware: initialize firmware.
118 *
119 * @priv A pointer to struct lbtf_private structure
120 *
121 * Returns: 0 on success.
122 */
123static int lbtf_setup_firmware(struct lbtf_private *priv)
124{
125 int ret = -1;
126
127 /*
128 * Read priv address from HW
129 */
130 memset(priv->current_addr, 0xff, ETH_ALEN);
131 ret = lbtf_update_hw_spec(priv);
132 if (ret) {
133 ret = -1;
134 goto done;
135 }
136
137 lbtf_set_mac_control(priv);
138 lbtf_set_radio_control(priv);
139
140 ret = 0;
141done:
142 return ret;
143}
144
145/**
146 * This function handles the timeout of command sending.
147 * It will re-send the same command again.
148 */
149static void command_timer_fn(unsigned long data)
150{
151 struct lbtf_private *priv = (struct lbtf_private *)data;
152 unsigned long flags;
153
154 spin_lock_irqsave(&priv->driver_lock, flags);
155
156 if (!priv->cur_cmd) {
157 printk(KERN_DEBUG "libertastf: command timer expired; "
158 "no pending command\n");
159 goto out;
160 }
161
162 printk(KERN_DEBUG "libertas: command %x timed out\n",
163 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
164
165 priv->cmd_timed_out = 1;
166 queue_work(lbtf_wq, &priv->cmd_work);
167out:
168 spin_unlock_irqrestore(&priv->driver_lock, flags);
169}
170
171static int lbtf_init_adapter(struct lbtf_private *priv)
172{
173 memset(priv->current_addr, 0xff, ETH_ALEN);
174 mutex_init(&priv->lock);
175
176 priv->vif = NULL;
177 setup_timer(&priv->command_timer, command_timer_fn,
178 (unsigned long)priv);
179
180 INIT_LIST_HEAD(&priv->cmdfreeq);
181 INIT_LIST_HEAD(&priv->cmdpendingq);
182
183 spin_lock_init(&priv->driver_lock);
184
185 /* Allocate the command buffers */
186 if (lbtf_allocate_cmd_buffer(priv))
187 return -1;
188
189 return 0;
190}
191
192static void lbtf_free_adapter(struct lbtf_private *priv)
193{
194 lbtf_free_cmd_buffer(priv);
195 del_timer(&priv->command_timer);
196}
197
198static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
199{
200 struct lbtf_private *priv = hw->priv;
201
202 priv->skb_to_tx = skb;
203 queue_work(lbtf_wq, &priv->tx_work);
204 /*
205 * queue will be restarted when we receive transmission feedback if
206 * there are no buffered multicast frames to send
207 */
208 ieee80211_stop_queues(priv->hw);
Andrey Yurovsky51e99152009-01-05 14:37:31 -0800209 return NETDEV_TX_OK;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700210}
211
212static void lbtf_tx_work(struct work_struct *work)
213{
214 struct lbtf_private *priv = container_of(work, struct lbtf_private,
215 tx_work);
216 unsigned int len;
217 struct ieee80211_tx_info *info;
218 struct txpd *txpd;
219 struct sk_buff *skb = NULL;
220 int err;
221
Johannes Berg05c914f2008-09-11 00:01:58 +0200222 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700223 (!skb_queue_empty(&priv->bc_ps_buf)))
224 skb = skb_dequeue(&priv->bc_ps_buf);
225 else if (priv->skb_to_tx) {
226 skb = priv->skb_to_tx;
227 priv->skb_to_tx = NULL;
228 } else
229 return;
230
231 len = skb->len;
232 info = IEEE80211_SKB_CB(skb);
233 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
234
235 if (priv->surpriseremoved) {
236 dev_kfree_skb_any(skb);
237 return;
238 }
239
240 memset(txpd, 0, sizeof(struct txpd));
241 /* Activate per-packet rate selection */
242 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
243 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
244
245 /* copy destination address from 802.11 header */
246 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
247 ETH_ALEN);
248 txpd->tx_packet_length = cpu_to_le16(len);
249 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
250 BUG_ON(priv->tx_skb);
251 spin_lock_irq(&priv->driver_lock);
252 priv->tx_skb = skb;
253 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
254 spin_unlock_irq(&priv->driver_lock);
255 if (err) {
256 dev_kfree_skb_any(skb);
257 priv->tx_skb = NULL;
258 }
259}
260
261static int lbtf_op_start(struct ieee80211_hw *hw)
262{
263 struct lbtf_private *priv = hw->priv;
264 void *card = priv->card;
265 int ret = -1;
266
267 if (!priv->fw_ready)
268 /* Upload firmware */
269 if (priv->hw_prog_firmware(card))
270 goto err_prog_firmware;
271
272 /* poke the firmware */
273 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
274 priv->radioon = RADIO_ON;
275 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
276 ret = lbtf_setup_firmware(priv);
277 if (ret)
278 goto err_prog_firmware;
279
280 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
281 (priv->fwrelease > LBTF_FW_VER_MAX)) {
282 ret = -1;
283 goto err_prog_firmware;
284 }
285
286 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
287 return 0;
288
289err_prog_firmware:
290 priv->hw_reset_device(card);
291 return ret;
292}
293
294static void lbtf_op_stop(struct ieee80211_hw *hw)
295{
296 struct lbtf_private *priv = hw->priv;
297 unsigned long flags;
298 struct sk_buff *skb;
299
300 struct cmd_ctrl_node *cmdnode;
301 /* Flush pending command nodes */
302 spin_lock_irqsave(&priv->driver_lock, flags);
303 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
304 cmdnode->result = -ENOENT;
305 cmdnode->cmdwaitqwoken = 1;
306 wake_up_interruptible(&cmdnode->cmdwait_q);
307 }
308
309 spin_unlock_irqrestore(&priv->driver_lock, flags);
310 cancel_work_sync(&priv->cmd_work);
311 cancel_work_sync(&priv->tx_work);
312 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
313 dev_kfree_skb_any(skb);
314 priv->radioon = RADIO_OFF;
315 lbtf_set_radio_control(priv);
316
317 return;
318}
319
320static int lbtf_op_add_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +0100321 struct ieee80211_vif *vif)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700322{
323 struct lbtf_private *priv = hw->priv;
324 if (priv->vif != NULL)
325 return -EOPNOTSUPP;
326
Johannes Berg1ed32e42009-12-23 13:15:45 +0100327 priv->vif = vif;
328 switch (vif->type) {
Johannes Berg05c914f2008-09-11 00:01:58 +0200329 case NL80211_IFTYPE_MESH_POINT:
330 case NL80211_IFTYPE_AP:
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700331 lbtf_set_mode(priv, LBTF_AP_MODE);
332 break;
Johannes Berg05c914f2008-09-11 00:01:58 +0200333 case NL80211_IFTYPE_STATION:
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700334 lbtf_set_mode(priv, LBTF_STA_MODE);
335 break;
336 default:
337 priv->vif = NULL;
338 return -EOPNOTSUPP;
339 }
Johannes Berg1ed32e42009-12-23 13:15:45 +0100340 lbtf_set_mac_address(priv, (u8 *) vif->addr);
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700341 return 0;
342}
343
344static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
Johannes Berg1ed32e42009-12-23 13:15:45 +0100345 struct ieee80211_vif *vif)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700346{
347 struct lbtf_private *priv = hw->priv;
348
Johannes Berg05c914f2008-09-11 00:01:58 +0200349 if (priv->vif->type == NL80211_IFTYPE_AP ||
350 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700351 lbtf_beacon_ctrl(priv, 0, 0);
352 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
353 lbtf_set_bssid(priv, 0, NULL);
354 priv->vif = NULL;
355}
356
Johannes Berge8975582008-10-09 12:18:51 +0200357static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700358{
359 struct lbtf_private *priv = hw->priv;
Johannes Berge8975582008-10-09 12:18:51 +0200360 struct ieee80211_conf *conf = &hw->conf;
361
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700362 if (conf->channel->center_freq != priv->cur_freq) {
363 priv->cur_freq = conf->channel->center_freq;
364 lbtf_set_channel(priv, conf->channel->hw_value);
365 }
366 return 0;
367}
368
Johannes Berg3ac64be2009-08-17 16:16:53 +0200369static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
370 int mc_count, struct dev_addr_list *mclist)
371{
372 struct lbtf_private *priv = hw->priv;
373 int i;
374
375 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
376 return mc_count;
377
378 priv->nr_of_multicastmacaddr = mc_count;
379 for (i = 0; i < mc_count; i++) {
380 if (!mclist)
381 break;
382 memcpy(&priv->multicastlist[i], mclist->da_addr,
383 ETH_ALEN);
384 mclist = mclist->next;
385 }
386
387 return mc_count;
388}
389
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700390#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
391static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
392 unsigned int changed_flags,
393 unsigned int *new_flags,
Johannes Berg3ac64be2009-08-17 16:16:53 +0200394 u64 multicast)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700395{
396 struct lbtf_private *priv = hw->priv;
397 int old_mac_control = priv->mac_control;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700398 changed_flags &= SUPPORTED_FIF_FLAGS;
399 *new_flags &= SUPPORTED_FIF_FLAGS;
400
401 if (!changed_flags)
402 return;
403
404 if (*new_flags & (FIF_PROMISC_IN_BSS))
405 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
406 else
407 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
408 if (*new_flags & (FIF_ALLMULTI) ||
Johannes Berg3ac64be2009-08-17 16:16:53 +0200409 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700410 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
411 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
Johannes Berg3ac64be2009-08-17 16:16:53 +0200412 } else if (multicast) {
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700413 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
414 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700415 lbtf_cmd_set_mac_multicast_addr(priv);
416 } else {
417 priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE |
418 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
419 if (priv->nr_of_multicastmacaddr) {
420 priv->nr_of_multicastmacaddr = 0;
421 lbtf_cmd_set_mac_multicast_addr(priv);
422 }
423 }
424
425
426 if (priv->mac_control != old_mac_control)
427 lbtf_set_mac_control(priv);
428}
429
430static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw,
431 struct ieee80211_vif *vif,
432 struct ieee80211_bss_conf *bss_conf,
433 u32 changes)
434{
435 struct lbtf_private *priv = hw->priv;
Johannes Berg2d0ddec2009-04-23 16:13:26 +0200436 struct sk_buff *beacon;
437
438 if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_INT)) {
439 switch (priv->vif->type) {
440 case NL80211_IFTYPE_AP:
441 case NL80211_IFTYPE_MESH_POINT:
442 beacon = ieee80211_beacon_get(hw, vif);
443 if (beacon) {
444 lbtf_beacon_set(priv, beacon);
445 kfree_skb(beacon);
446 lbtf_beacon_ctrl(priv, 1,
447 bss_conf->beacon_int);
448 }
449 break;
450 default:
451 break;
452 }
453 }
454
455 if (changes & BSS_CHANGED_BSSID) {
456 bool activate = !is_zero_ether_addr(bss_conf->bssid);
457 lbtf_set_bssid(priv, activate, bss_conf->bssid);
458 }
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700459
460 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
461 if (bss_conf->use_short_preamble)
462 priv->preamble = CMD_TYPE_SHORT_PREAMBLE;
463 else
464 priv->preamble = CMD_TYPE_LONG_PREAMBLE;
465 lbtf_set_radio_control(priv);
466 }
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700467}
468
469static const struct ieee80211_ops lbtf_ops = {
470 .tx = lbtf_op_tx,
471 .start = lbtf_op_start,
472 .stop = lbtf_op_stop,
473 .add_interface = lbtf_op_add_interface,
474 .remove_interface = lbtf_op_remove_interface,
475 .config = lbtf_op_config,
Johannes Berg3ac64be2009-08-17 16:16:53 +0200476 .prepare_multicast = lbtf_op_prepare_multicast,
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700477 .configure_filter = lbtf_op_configure_filter,
478 .bss_info_changed = lbtf_op_bss_info_changed,
479};
480
481int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
482{
483 struct ieee80211_rx_status stats;
484 struct rxpd *prxpd;
Harvey Harrisonde9cc7a2008-08-25 14:06:32 -0700485 int need_padding;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700486 unsigned int flags;
Harvey Harrisonde9cc7a2008-08-25 14:06:32 -0700487 struct ieee80211_hdr *hdr;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700488
489 prxpd = (struct rxpd *) skb->data;
490
491 stats.flag = 0;
492 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
493 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
494 stats.freq = priv->cur_freq;
495 stats.band = IEEE80211_BAND_2GHZ;
496 stats.signal = prxpd->snr;
497 stats.noise = prxpd->nf;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700498 /* Marvell rate index has a hole at value 4 */
499 if (prxpd->rx_rate > 4)
500 --prxpd->rx_rate;
501 stats.rate_idx = prxpd->rx_rate;
502 skb_pull(skb, sizeof(struct rxpd));
503
Harvey Harrisonde9cc7a2008-08-25 14:06:32 -0700504 hdr = (struct ieee80211_hdr *)skb->data;
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700505 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
506
Harvey Harrisonde9cc7a2008-08-25 14:06:32 -0700507 need_padding = ieee80211_is_data_qos(hdr->frame_control);
508 need_padding ^= ieee80211_has_a4(hdr->frame_control);
509 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
510 (*ieee80211_get_qos_ctl(hdr) &
511 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700512
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700513 if (need_padding) {
514 memmove(skb->data + 2, skb->data, skb->len);
515 skb_reserve(skb, 2);
516 }
517
Johannes Bergf1d58c22009-06-17 13:13:00 +0200518 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
519 ieee80211_rx_irqsafe(priv->hw, skb);
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700520 return 0;
521}
522EXPORT_SYMBOL_GPL(lbtf_rx);
523
524/**
525 * lbtf_add_card: Add and initialize the card, no fw upload yet.
526 *
527 * @card A pointer to card
528 *
529 * Returns: pointer to struct lbtf_priv.
530 */
531struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
532{
533 struct ieee80211_hw *hw;
534 struct lbtf_private *priv = NULL;
535
536 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
537 if (!hw)
538 goto done;
539
540 priv = hw->priv;
541 if (lbtf_init_adapter(priv))
542 goto err_init_adapter;
543
544 priv->hw = hw;
545 priv->card = card;
546 priv->tx_skb = NULL;
547
548 hw->queues = 1;
549 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
550 hw->extra_tx_headroom = sizeof(struct txpd);
551 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
552 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
553 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
554 priv->band.bitrates = priv->rates;
555 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
556 priv->band.channels = priv->channels;
557 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
Deepak Saxenaf3233832010-02-09 13:35:43 -0800558 hw->wiphy->interface_modes =
559 BIT(NL80211_IFTYPE_STATION) |
560 BIT(NL80211_IFTYPE_ADHOC);
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700561 skb_queue_head_init(&priv->bc_ps_buf);
562
563 SET_IEEE80211_DEV(hw, dmdev);
564
565 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
566 INIT_WORK(&priv->tx_work, lbtf_tx_work);
567 if (ieee80211_register_hw(hw))
568 goto err_init_adapter;
569
570 goto done;
571
572err_init_adapter:
573 lbtf_free_adapter(priv);
574 ieee80211_free_hw(hw);
575 priv = NULL;
576
577done:
578 return priv;
579}
580EXPORT_SYMBOL_GPL(lbtf_add_card);
581
582
583int lbtf_remove_card(struct lbtf_private *priv)
584{
585 struct ieee80211_hw *hw = priv->hw;
586
587 priv->surpriseremoved = 1;
588 del_timer(&priv->command_timer);
589 lbtf_free_adapter(priv);
590 priv->hw = NULL;
591 ieee80211_unregister_hw(hw);
592 ieee80211_free_hw(hw);
593
594 return 0;
595}
596EXPORT_SYMBOL_GPL(lbtf_remove_card);
597
598void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
599{
600 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
Johannes Berge6a98542008-10-21 12:40:02 +0200601
602 ieee80211_tx_info_clear_status(info);
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700603 /*
604 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
605 * default pid rc algorithm.
606 *
607 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
608 */
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700609 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
610 info->flags |= IEEE80211_TX_STAT_ACK;
611 skb_pull(priv->tx_skb, sizeof(struct txpd));
612 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
613 priv->tx_skb = NULL;
614 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
615 ieee80211_wake_queues(priv->hw);
616 else
617 queue_work(lbtf_wq, &priv->tx_work);
618}
619EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
620
621void lbtf_bcn_sent(struct lbtf_private *priv)
622{
623 struct sk_buff *skb = NULL;
624
Johannes Berg05c914f2008-09-11 00:01:58 +0200625 if (priv->vif->type != NL80211_IFTYPE_AP)
Luis Carlos Cobo06b16ae2008-08-14 10:40:57 -0700626 return;
627
628 if (skb_queue_empty(&priv->bc_ps_buf)) {
629 bool tx_buff_bc = 0;
630
631 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
632 skb_queue_tail(&priv->bc_ps_buf, skb);
633 tx_buff_bc = 1;
634 }
635 if (tx_buff_bc) {
636 ieee80211_stop_queues(priv->hw);
637 queue_work(lbtf_wq, &priv->tx_work);
638 }
639 }
640
641 skb = ieee80211_beacon_get(priv->hw, priv->vif);
642
643 if (skb) {
644 lbtf_beacon_set(priv, skb);
645 kfree_skb(skb);
646 }
647}
648EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
649
650static int __init lbtf_init_module(void)
651{
652 lbtf_wq = create_workqueue("libertastf");
653 if (lbtf_wq == NULL) {
654 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
655 return -ENOMEM;
656 }
657 return 0;
658}
659
660static void __exit lbtf_exit_module(void)
661{
662 destroy_workqueue(lbtf_wq);
663}
664
665module_init(lbtf_init_module);
666module_exit(lbtf_exit_module);
667
668MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
669MODULE_AUTHOR("Cozybit Inc.");
670MODULE_LICENSE("GPL");