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06b16ae5 LCC |
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 | #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 | ||
19 | static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION; | |
20 | struct workqueue_struct *lbtf_wq; | |
21 | ||
22 | static 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. */ | |
40 | static 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 | ||
78 | static 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 | */ | |
123 | static 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; | |
141 | done: | |
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 | */ | |
149 | static 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); | |
167 | out: | |
168 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
169 | } | |
170 | ||
171 | static 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 | ||
192 | static void lbtf_free_adapter(struct lbtf_private *priv) | |
193 | { | |
194 | lbtf_free_cmd_buffer(priv); | |
195 | del_timer(&priv->command_timer); | |
196 | } | |
197 | ||
198 | static 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); | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static 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 | ||
222 | if ((priv->vif->type == IEEE80211_IF_TYPE_AP) && | |
223 | (!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 | ||
261 | static 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 | ||
289 | err_prog_firmware: | |
290 | priv->hw_reset_device(card); | |
291 | return ret; | |
292 | } | |
293 | ||
294 | static 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 | ||
320 | static int lbtf_op_add_interface(struct ieee80211_hw *hw, | |
321 | struct ieee80211_if_init_conf *conf) | |
322 | { | |
323 | struct lbtf_private *priv = hw->priv; | |
324 | if (priv->vif != NULL) | |
325 | return -EOPNOTSUPP; | |
326 | ||
327 | priv->vif = conf->vif; | |
328 | switch (conf->type) { | |
329 | case IEEE80211_IF_TYPE_MESH_POINT: | |
330 | case IEEE80211_IF_TYPE_AP: | |
331 | lbtf_set_mode(priv, LBTF_AP_MODE); | |
332 | break; | |
333 | case IEEE80211_IF_TYPE_STA: | |
334 | lbtf_set_mode(priv, LBTF_STA_MODE); | |
335 | break; | |
336 | default: | |
337 | priv->vif = NULL; | |
338 | return -EOPNOTSUPP; | |
339 | } | |
340 | lbtf_set_mac_address(priv, (u8 *) conf->mac_addr); | |
341 | return 0; | |
342 | } | |
343 | ||
344 | static void lbtf_op_remove_interface(struct ieee80211_hw *hw, | |
345 | struct ieee80211_if_init_conf *conf) | |
346 | { | |
347 | struct lbtf_private *priv = hw->priv; | |
348 | ||
349 | if (priv->vif->type == IEEE80211_IF_TYPE_AP || | |
350 | priv->vif->type == IEEE80211_IF_TYPE_MESH_POINT) | |
351 | 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 | ||
357 | static int lbtf_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
358 | { | |
359 | struct lbtf_private *priv = hw->priv; | |
360 | if (conf->channel->center_freq != priv->cur_freq) { | |
361 | priv->cur_freq = conf->channel->center_freq; | |
362 | lbtf_set_channel(priv, conf->channel->hw_value); | |
363 | } | |
364 | return 0; | |
365 | } | |
366 | ||
367 | static int lbtf_op_config_interface(struct ieee80211_hw *hw, | |
368 | struct ieee80211_vif *vif, | |
369 | struct ieee80211_if_conf *conf) | |
370 | { | |
371 | struct lbtf_private *priv = hw->priv; | |
372 | struct sk_buff *beacon; | |
373 | ||
374 | switch (priv->vif->type) { | |
375 | case IEEE80211_IF_TYPE_AP: | |
376 | case IEEE80211_IF_TYPE_MESH_POINT: | |
377 | beacon = ieee80211_beacon_get(hw, vif); | |
378 | if (beacon) { | |
379 | lbtf_beacon_set(priv, beacon); | |
380 | kfree_skb(beacon); | |
381 | lbtf_beacon_ctrl(priv, 1, hw->conf.beacon_int); | |
382 | } | |
383 | break; | |
384 | default: | |
385 | break; | |
386 | } | |
387 | ||
388 | if (conf->bssid) { | |
389 | u8 null_bssid[ETH_ALEN] = {0}; | |
390 | bool activate = compare_ether_addr(conf->bssid, null_bssid); | |
391 | lbtf_set_bssid(priv, activate, conf->bssid); | |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | #define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI) | |
398 | static void lbtf_op_configure_filter(struct ieee80211_hw *hw, | |
399 | unsigned int changed_flags, | |
400 | unsigned int *new_flags, | |
401 | int mc_count, struct dev_mc_list *mclist) | |
402 | { | |
403 | struct lbtf_private *priv = hw->priv; | |
404 | int old_mac_control = priv->mac_control; | |
405 | int i; | |
406 | changed_flags &= SUPPORTED_FIF_FLAGS; | |
407 | *new_flags &= SUPPORTED_FIF_FLAGS; | |
408 | ||
409 | if (!changed_flags) | |
410 | return; | |
411 | ||
412 | if (*new_flags & (FIF_PROMISC_IN_BSS)) | |
413 | priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE; | |
414 | else | |
415 | priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE; | |
416 | if (*new_flags & (FIF_ALLMULTI) || | |
417 | mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE) { | |
418 | priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE; | |
419 | priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE; | |
420 | } else if (mc_count) { | |
421 | priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE; | |
422 | priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE; | |
423 | priv->nr_of_multicastmacaddr = mc_count; | |
424 | for (i = 0; i < mc_count; i++) { | |
425 | if (!mclist) | |
426 | break; | |
427 | memcpy(&priv->multicastlist[i], mclist->da_addr, | |
428 | ETH_ALEN); | |
429 | mclist = mclist->next; | |
430 | } | |
431 | lbtf_cmd_set_mac_multicast_addr(priv); | |
432 | } else { | |
433 | priv->mac_control &= ~(CMD_ACT_MAC_MULTICAST_ENABLE | | |
434 | CMD_ACT_MAC_ALL_MULTICAST_ENABLE); | |
435 | if (priv->nr_of_multicastmacaddr) { | |
436 | priv->nr_of_multicastmacaddr = 0; | |
437 | lbtf_cmd_set_mac_multicast_addr(priv); | |
438 | } | |
439 | } | |
440 | ||
441 | ||
442 | if (priv->mac_control != old_mac_control) | |
443 | lbtf_set_mac_control(priv); | |
444 | } | |
445 | ||
446 | static void lbtf_op_bss_info_changed(struct ieee80211_hw *hw, | |
447 | struct ieee80211_vif *vif, | |
448 | struct ieee80211_bss_conf *bss_conf, | |
449 | u32 changes) | |
450 | { | |
451 | struct lbtf_private *priv = hw->priv; | |
452 | ||
453 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { | |
454 | if (bss_conf->use_short_preamble) | |
455 | priv->preamble = CMD_TYPE_SHORT_PREAMBLE; | |
456 | else | |
457 | priv->preamble = CMD_TYPE_LONG_PREAMBLE; | |
458 | lbtf_set_radio_control(priv); | |
459 | } | |
460 | ||
461 | return; | |
462 | } | |
463 | ||
464 | static const struct ieee80211_ops lbtf_ops = { | |
465 | .tx = lbtf_op_tx, | |
466 | .start = lbtf_op_start, | |
467 | .stop = lbtf_op_stop, | |
468 | .add_interface = lbtf_op_add_interface, | |
469 | .remove_interface = lbtf_op_remove_interface, | |
470 | .config = lbtf_op_config, | |
471 | .config_interface = lbtf_op_config_interface, | |
472 | .configure_filter = lbtf_op_configure_filter, | |
473 | .bss_info_changed = lbtf_op_bss_info_changed, | |
474 | }; | |
475 | ||
476 | int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb) | |
477 | { | |
478 | struct ieee80211_rx_status stats; | |
479 | struct rxpd *prxpd; | |
480 | bool is_qos, is_4addr, is_amsdu, need_padding; | |
481 | unsigned int flags; | |
482 | u16 fc, fc_le; | |
483 | ||
484 | prxpd = (struct rxpd *) skb->data; | |
485 | ||
486 | stats.flag = 0; | |
487 | if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK))) | |
488 | stats.flag |= RX_FLAG_FAILED_FCS_CRC; | |
489 | stats.freq = priv->cur_freq; | |
490 | stats.band = IEEE80211_BAND_2GHZ; | |
491 | stats.signal = prxpd->snr; | |
492 | stats.noise = prxpd->nf; | |
493 | stats.qual = prxpd->snr - prxpd->nf; | |
494 | /* Marvell rate index has a hole at value 4 */ | |
495 | if (prxpd->rx_rate > 4) | |
496 | --prxpd->rx_rate; | |
497 | stats.rate_idx = prxpd->rx_rate; | |
498 | skb_pull(skb, sizeof(struct rxpd)); | |
499 | ||
500 | fc_le = *((__le16 *) skb->data); | |
501 | fc = le16_to_cpu(fc_le); | |
502 | flags = le32_to_cpu(*(__le32 *)(skb->data + 4)); | |
503 | ||
504 | is_qos = ((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA) && | |
505 | (fc & IEEE80211_STYPE_QOS_DATA); | |
506 | is_4addr = (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) == | |
507 | (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS); | |
508 | is_amsdu = ((fc & 0x8C) == 0x88) && | |
509 | (*(skb->data + ieee80211_hdrlen(fc_le) - QOS_CONTROL_LEN) | |
510 | & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT); | |
511 | ||
512 | need_padding = is_qos ^ is_4addr ^ is_amsdu; | |
513 | if (need_padding) { | |
514 | memmove(skb->data + 2, skb->data, skb->len); | |
515 | skb_reserve(skb, 2); | |
516 | } | |
517 | ||
518 | ieee80211_rx_irqsafe(priv->hw, skb, &stats); | |
519 | return 0; | |
520 | } | |
521 | EXPORT_SYMBOL_GPL(lbtf_rx); | |
522 | ||
523 | /** | |
524 | * lbtf_add_card: Add and initialize the card, no fw upload yet. | |
525 | * | |
526 | * @card A pointer to card | |
527 | * | |
528 | * Returns: pointer to struct lbtf_priv. | |
529 | */ | |
530 | struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev) | |
531 | { | |
532 | struct ieee80211_hw *hw; | |
533 | struct lbtf_private *priv = NULL; | |
534 | ||
535 | hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops); | |
536 | if (!hw) | |
537 | goto done; | |
538 | ||
539 | priv = hw->priv; | |
540 | if (lbtf_init_adapter(priv)) | |
541 | goto err_init_adapter; | |
542 | ||
543 | priv->hw = hw; | |
544 | priv->card = card; | |
545 | priv->tx_skb = NULL; | |
546 | ||
547 | hw->queues = 1; | |
548 | hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING; | |
549 | hw->extra_tx_headroom = sizeof(struct txpd); | |
550 | memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels)); | |
551 | memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates)); | |
552 | priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates); | |
553 | priv->band.bitrates = priv->rates; | |
554 | priv->band.n_channels = ARRAY_SIZE(lbtf_channels); | |
555 | priv->band.channels = priv->channels; | |
556 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band; | |
557 | skb_queue_head_init(&priv->bc_ps_buf); | |
558 | ||
559 | SET_IEEE80211_DEV(hw, dmdev); | |
560 | ||
561 | INIT_WORK(&priv->cmd_work, lbtf_cmd_work); | |
562 | INIT_WORK(&priv->tx_work, lbtf_tx_work); | |
563 | if (ieee80211_register_hw(hw)) | |
564 | goto err_init_adapter; | |
565 | ||
566 | goto done; | |
567 | ||
568 | err_init_adapter: | |
569 | lbtf_free_adapter(priv); | |
570 | ieee80211_free_hw(hw); | |
571 | priv = NULL; | |
572 | ||
573 | done: | |
574 | return priv; | |
575 | } | |
576 | EXPORT_SYMBOL_GPL(lbtf_add_card); | |
577 | ||
578 | ||
579 | int lbtf_remove_card(struct lbtf_private *priv) | |
580 | { | |
581 | struct ieee80211_hw *hw = priv->hw; | |
582 | ||
583 | priv->surpriseremoved = 1; | |
584 | del_timer(&priv->command_timer); | |
585 | lbtf_free_adapter(priv); | |
586 | priv->hw = NULL; | |
587 | ieee80211_unregister_hw(hw); | |
588 | ieee80211_free_hw(hw); | |
589 | ||
590 | return 0; | |
591 | } | |
592 | EXPORT_SYMBOL_GPL(lbtf_remove_card); | |
593 | ||
594 | void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail) | |
595 | { | |
596 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb); | |
597 | memset(&info->status, 0, sizeof(info->status)); | |
598 | /* | |
599 | * Commented out, otherwise we never go beyond 1Mbit/s using mac80211 | |
600 | * default pid rc algorithm. | |
601 | * | |
602 | * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt; | |
603 | */ | |
604 | info->status.excessive_retries = fail ? 1 : 0; | |
605 | if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail) | |
606 | info->flags |= IEEE80211_TX_STAT_ACK; | |
607 | skb_pull(priv->tx_skb, sizeof(struct txpd)); | |
608 | ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb); | |
609 | priv->tx_skb = NULL; | |
610 | if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf)) | |
611 | ieee80211_wake_queues(priv->hw); | |
612 | else | |
613 | queue_work(lbtf_wq, &priv->tx_work); | |
614 | } | |
615 | EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback); | |
616 | ||
617 | void lbtf_bcn_sent(struct lbtf_private *priv) | |
618 | { | |
619 | struct sk_buff *skb = NULL; | |
620 | ||
621 | if (priv->vif->type != IEEE80211_IF_TYPE_AP) | |
622 | return; | |
623 | ||
624 | if (skb_queue_empty(&priv->bc_ps_buf)) { | |
625 | bool tx_buff_bc = 0; | |
626 | ||
627 | while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) { | |
628 | skb_queue_tail(&priv->bc_ps_buf, skb); | |
629 | tx_buff_bc = 1; | |
630 | } | |
631 | if (tx_buff_bc) { | |
632 | ieee80211_stop_queues(priv->hw); | |
633 | queue_work(lbtf_wq, &priv->tx_work); | |
634 | } | |
635 | } | |
636 | ||
637 | skb = ieee80211_beacon_get(priv->hw, priv->vif); | |
638 | ||
639 | if (skb) { | |
640 | lbtf_beacon_set(priv, skb); | |
641 | kfree_skb(skb); | |
642 | } | |
643 | } | |
644 | EXPORT_SYMBOL_GPL(lbtf_bcn_sent); | |
645 | ||
646 | static int __init lbtf_init_module(void) | |
647 | { | |
648 | lbtf_wq = create_workqueue("libertastf"); | |
649 | if (lbtf_wq == NULL) { | |
650 | printk(KERN_ERR "libertastf: couldn't create workqueue\n"); | |
651 | return -ENOMEM; | |
652 | } | |
653 | return 0; | |
654 | } | |
655 | ||
656 | static void __exit lbtf_exit_module(void) | |
657 | { | |
658 | destroy_workqueue(lbtf_wq); | |
659 | } | |
660 | ||
661 | module_init(lbtf_init_module); | |
662 | module_exit(lbtf_exit_module); | |
663 | ||
664 | MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library"); | |
665 | MODULE_AUTHOR("Cozybit Inc."); | |
666 | MODULE_LICENSE("GPL"); |