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rtl8180: fix tx status reporting
[deliverable/linux.git] / drivers / net / wireless / libertas_tf / main.c
CommitLineData
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 */
e9bd5bcd 10#include "deb_defs.h"
06b16ae5
LCC		 11#include "libertas_tf.h"
12#include "linux/etherdevice.h"
13
14#define DRIVER_RELEASE_VERSION "004.p0"
15/* thinfirm version: 5.132.X.pX */
16#define LBTF_FW_VER_MIN 0x05840300
17#define LBTF_FW_VER_MAX 0x0584ffff
18#define QOS_CONTROL_LEN 2
19
e9bd5bcd
S		 20/* Module parameters */
21unsigned int lbtf_debug;
22EXPORT_SYMBOL_GPL(lbtf_debug);
23module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
24
25static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
26#ifdef DEBUG
27 "-dbg"
28#endif
29 "";
30
06b16ae5
LCC		 31struct workqueue_struct *lbtf_wq;
32
33static const struct ieee80211_channel lbtf_channels[] = {
34 { .center_freq = 2412, .hw_value = 1 },
35 { .center_freq = 2417, .hw_value = 2 },
36 { .center_freq = 2422, .hw_value = 3 },
37 { .center_freq = 2427, .hw_value = 4 },
38 { .center_freq = 2432, .hw_value = 5 },
39 { .center_freq = 2437, .hw_value = 6 },
40 { .center_freq = 2442, .hw_value = 7 },
41 { .center_freq = 2447, .hw_value = 8 },
42 { .center_freq = 2452, .hw_value = 9 },
43 { .center_freq = 2457, .hw_value = 10 },
44 { .center_freq = 2462, .hw_value = 11 },
45 { .center_freq = 2467, .hw_value = 12 },
46 { .center_freq = 2472, .hw_value = 13 },
47 { .center_freq = 2484, .hw_value = 14 },
48};
49
50/* This table contains the hardware specific values for the modulation rates. */
51static const struct ieee80211_rate lbtf_rates[] = {
52 { .bitrate = 10,
53 .hw_value = 0, },
54 { .bitrate = 20,
55 .hw_value = 1,
56 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
57 { .bitrate = 55,
58 .hw_value = 2,
59 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
60 { .bitrate = 110,
61 .hw_value = 3,
62 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
63 { .bitrate = 60,
64 .hw_value = 5,
65 .flags = 0 },
66 { .bitrate = 90,
67 .hw_value = 6,
68 .flags = 0 },
69 { .bitrate = 120,
70 .hw_value = 7,
71 .flags = 0 },
72 { .bitrate = 180,
73 .hw_value = 8,
74 .flags = 0 },
75 { .bitrate = 240,
76 .hw_value = 9,
77 .flags = 0 },
78 { .bitrate = 360,
79 .hw_value = 10,
80 .flags = 0 },
81 { .bitrate = 480,
82 .hw_value = 11,
83 .flags = 0 },
84 { .bitrate = 540,
85 .hw_value = 12,
86 .flags = 0 },
87};
88
89static void lbtf_cmd_work(struct work_struct *work)
90{
91 struct lbtf_private *priv = container_of(work, struct lbtf_private,
92 cmd_work);
e9bd5bcd
S		 93
94 lbtf_deb_enter(LBTF_DEB_CMD);
95
06b16ae5
LCC		 96 spin_lock_irq(&priv->driver_lock);
97 /* command response? */
98 if (priv->cmd_response_rxed) {
99 priv->cmd_response_rxed = 0;
100 spin_unlock_irq(&priv->driver_lock);
101 lbtf_process_rx_command(priv);
102 spin_lock_irq(&priv->driver_lock);
103 }
104
105 if (priv->cmd_timed_out && priv->cur_cmd) {
106 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
107
108 if (++priv->nr_retries > 10) {
109 lbtf_complete_command(priv, cmdnode,
110 -ETIMEDOUT);
111 priv->nr_retries = 0;
112 } else {
113 priv->cur_cmd = NULL;
114
115 /* Stick it back at the _top_ of the pending
116 * queue for immediate resubmission */
117 list_add(&cmdnode->list, &priv->cmdpendingq);
118 }
119 }
120 priv->cmd_timed_out = 0;
121 spin_unlock_irq(&priv->driver_lock);
122
e9bd5bcd
S		 123 if (!priv->fw_ready) {
124 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
06b16ae5 125 return;
e9bd5bcd
S		 126 }
127
06b16ae5
LCC		 128 /* Execute the next command */
129 if (!priv->cur_cmd)
130 lbtf_execute_next_command(priv);
e9bd5bcd
S		 131
132 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 133}
134
135/**
136 * lbtf_setup_firmware: initialize firmware.
137 *
138 * @priv A pointer to struct lbtf_private structure
139 *
140 * Returns: 0 on success.
141 */
142static int lbtf_setup_firmware(struct lbtf_private *priv)
143{
144 int ret = -1;
145
e9bd5bcd 146 lbtf_deb_enter(LBTF_DEB_FW);
06b16ae5
LCC		 147 /*
148 * Read priv address from HW
149 */
150 memset(priv->current_addr, 0xff, ETH_ALEN);
151 ret = lbtf_update_hw_spec(priv);
152 if (ret) {
153 ret = -1;
154 goto done;
155 }
156
157 lbtf_set_mac_control(priv);
158 lbtf_set_radio_control(priv);
159
160 ret = 0;
161done:
e9bd5bcd 162 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
06b16ae5
LCC		 163 return ret;
164}
165
166/**
167 * This function handles the timeout of command sending.
168 * It will re-send the same command again.
169 */
170static void command_timer_fn(unsigned long data)
171{
172 struct lbtf_private *priv = (struct lbtf_private *)data;
173 unsigned long flags;
e9bd5bcd 174 lbtf_deb_enter(LBTF_DEB_CMD);
06b16ae5
LCC		 175
176 spin_lock_irqsave(&priv->driver_lock, flags);
177
178 if (!priv->cur_cmd) {
179 printk(KERN_DEBUG "libertastf: command timer expired; "
180 "no pending command\n");
181 goto out;
182 }
183
184 printk(KERN_DEBUG "libertas: command %x timed out\n",
185 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
186
187 priv->cmd_timed_out = 1;
188 queue_work(lbtf_wq, &priv->cmd_work);
189out:
190 spin_unlock_irqrestore(&priv->driver_lock, flags);
e9bd5bcd 191 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 192}
193
194static int lbtf_init_adapter(struct lbtf_private *priv)
195{
e9bd5bcd 196 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 197 memset(priv->current_addr, 0xff, ETH_ALEN);
198 mutex_init(&priv->lock);
199
200 priv->vif = NULL;
201 setup_timer(&priv->command_timer, command_timer_fn,
202 (unsigned long)priv);
203
204 INIT_LIST_HEAD(&priv->cmdfreeq);
205 INIT_LIST_HEAD(&priv->cmdpendingq);
206
207 spin_lock_init(&priv->driver_lock);
208
209 /* Allocate the command buffers */
210 if (lbtf_allocate_cmd_buffer(priv))
211 return -1;
212
e9bd5bcd 213 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 214 return 0;
215}
216
217static void lbtf_free_adapter(struct lbtf_private *priv)
218{
e9bd5bcd 219 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 220 lbtf_free_cmd_buffer(priv);
221 del_timer(&priv->command_timer);
e9bd5bcd 222 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 223}
224
225static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
226{
227 struct lbtf_private *priv = hw->priv;
228
229 priv->skb_to_tx = skb;
230 queue_work(lbtf_wq, &priv->tx_work);
231 /*
232 * queue will be restarted when we receive transmission feedback if
233 * there are no buffered multicast frames to send
234 */
235 ieee80211_stop_queues(priv->hw);
51e99158 236 return NETDEV_TX_OK;
06b16ae5
LCC		 237}
238
239static void lbtf_tx_work(struct work_struct *work)
240{
241 struct lbtf_private *priv = container_of(work, struct lbtf_private,
242 tx_work);
243 unsigned int len;
244 struct ieee80211_tx_info *info;
245 struct txpd *txpd;
246 struct sk_buff *skb = NULL;
247 int err;
248
e9bd5bcd
S		 249 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
250
05c914fe 251 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
06b16ae5
LCC		 252 (!skb_queue_empty(&priv->bc_ps_buf)))
253 skb = skb_dequeue(&priv->bc_ps_buf);
254 else if (priv->skb_to_tx) {
255 skb = priv->skb_to_tx;
256 priv->skb_to_tx = NULL;
e9bd5bcd
S		 257 } else {
258 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5 259 return;
e9bd5bcd 260 }
06b16ae5
LCC		 261
262 len = skb->len;
263 info = IEEE80211_SKB_CB(skb);
264 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
265
266 if (priv->surpriseremoved) {
267 dev_kfree_skb_any(skb);
e9bd5bcd 268 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 269 return;
270 }
271
272 memset(txpd, 0, sizeof(struct txpd));
273 /* Activate per-packet rate selection */
274 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
275 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
276
277 /* copy destination address from 802.11 header */
278 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
279 ETH_ALEN);
280 txpd->tx_packet_length = cpu_to_le16(len);
281 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
e9bd5bcd 282 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
06b16ae5
LCC		 283 BUG_ON(priv->tx_skb);
284 spin_lock_irq(&priv->driver_lock);
285 priv->tx_skb = skb;
286 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
287 spin_unlock_irq(&priv->driver_lock);
288 if (err) {
289 dev_kfree_skb_any(skb);
290 priv->tx_skb = NULL;
e9bd5bcd 291 pr_err("TX error: %d", err);
06b16ae5 292 }
e9bd5bcd 293 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 294}
295
296static int lbtf_op_start(struct ieee80211_hw *hw)
297{
298 struct lbtf_private *priv = hw->priv;
299 void *card = priv->card;
300 int ret = -1;
301
e9bd5bcd
S		 302 lbtf_deb_enter(LBTF_DEB_MACOPS);
303
06b16ae5
LCC		 304 if (!priv->fw_ready)
305 /* Upload firmware */
306 if (priv->hw_prog_firmware(card))
307 goto err_prog_firmware;
308
309 /* poke the firmware */
310 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
311 priv->radioon = RADIO_ON;
312 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
313 ret = lbtf_setup_firmware(priv);
314 if (ret)
315 goto err_prog_firmware;
316
317 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
318 (priv->fwrelease > LBTF_FW_VER_MAX)) {
319 ret = -1;
320 goto err_prog_firmware;
321 }
322
323 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
e9bd5bcd 324 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 325 return 0;
326
327err_prog_firmware:
328 priv->hw_reset_device(card);
e9bd5bcd 329 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret);
06b16ae5
LCC		 330 return ret;
331}
332
333static void lbtf_op_stop(struct ieee80211_hw *hw)
334{
335 struct lbtf_private *priv = hw->priv;
336 unsigned long flags;
337 struct sk_buff *skb;
338
339 struct cmd_ctrl_node *cmdnode;
e9bd5bcd
S		 340
341 lbtf_deb_enter(LBTF_DEB_MACOPS);
342
06b16ae5
LCC		 343 /* Flush pending command nodes */
344 spin_lock_irqsave(&priv->driver_lock, flags);
345 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
346 cmdnode->result = -ENOENT;
347 cmdnode->cmdwaitqwoken = 1;
348 wake_up_interruptible(&cmdnode->cmdwait_q);
349 }
350
351 spin_unlock_irqrestore(&priv->driver_lock, flags);
352 cancel_work_sync(&priv->cmd_work);
353 cancel_work_sync(&priv->tx_work);
354 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
355 dev_kfree_skb_any(skb);
356 priv->radioon = RADIO_OFF;
357 lbtf_set_radio_control(priv);
358
e9bd5bcd 359 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 360 return;
361}
362
363static int lbtf_op_add_interface(struct ieee80211_hw *hw,
1ed32e4f 364 struct ieee80211_vif *vif)
06b16ae5
LCC		 365{
366 struct lbtf_private *priv = hw->priv;
e9bd5bcd 367 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5
LCC		 368 if (priv->vif != NULL)
369 return -EOPNOTSUPP;
370
1ed32e4f
JB		 371 priv->vif = vif;
372 switch (vif->type) {
05c914fe
JB		 373 case NL80211_IFTYPE_MESH_POINT:
374 case NL80211_IFTYPE_AP:
06b16ae5
LCC		 375 lbtf_set_mode(priv, LBTF_AP_MODE);
376 break;
05c914fe 377 case NL80211_IFTYPE_STATION:
06b16ae5
LCC		 378 lbtf_set_mode(priv, LBTF_STA_MODE);
379 break;
380 default:
381 priv->vif = NULL;
382 return -EOPNOTSUPP;
383 }
1ed32e4f 384 lbtf_set_mac_address(priv, (u8 *) vif->addr);
e9bd5bcd 385 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 386 return 0;
387}
388
389static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
1ed32e4f 390 struct ieee80211_vif *vif)
06b16ae5
LCC		 391{
392 struct lbtf_private *priv = hw->priv;
e9bd5bcd 393 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5 394
05c914fe
JB		 395 if (priv->vif->type == NL80211_IFTYPE_AP ||
396 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
06b16ae5
LCC		 397 lbtf_beacon_ctrl(priv, 0, 0);
398 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
399 lbtf_set_bssid(priv, 0, NULL);
400 priv->vif = NULL;
e9bd5bcd 401 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 402}
403
e8975581 404static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
06b16ae5
LCC		 405{
406 struct lbtf_private *priv = hw->priv;
e8975581 407 struct ieee80211_conf *conf = &hw->conf;
e9bd5bcd 408 lbtf_deb_enter(LBTF_DEB_MACOPS);
e8975581 409
06b16ae5
LCC		 410 if (conf->channel->center_freq != priv->cur_freq) {
411 priv->cur_freq = conf->channel->center_freq;
412 lbtf_set_channel(priv, conf->channel->hw_value);
413 }
e9bd5bcd 414 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 415 return 0;
416}
417
3ac64bee
JB		 418static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
419 int mc_count, struct dev_addr_list *mclist)
420{
421 struct lbtf_private *priv = hw->priv;
422 int i;
423
424 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
425 return mc_count;
426
427 priv->nr_of_multicastmacaddr = mc_count;
428 for (i = 0; i < mc_count; i++) {
429 if (!mclist)
430 break;
431 memcpy(&priv->multicastlist[i], mclist->da_addr,
432 ETH_ALEN);
433 mclist = mclist->next;
434 }
435
436 return mc_count;
437}
438
06b16ae5
LCC		 439#define SUPPORTED_FIF_FLAGS (FIF_PROMISC_IN_BSS | FIF_ALLMULTI)
440static void lbtf_op_configure_filter(struct ieee80211_hw *hw,
441 unsigned int changed_flags,
442 unsigned int *new_flags,
3ac64bee 443 u64 multicast)
06b16ae5
LCC		 444{
445 struct lbtf_private *priv = hw->priv;
446 int old_mac_control = priv->mac_control;
e9bd5bcd
S		 447
448 lbtf_deb_enter(LBTF_DEB_MACOPS);
449
06b16ae5
LCC		 450 changed_flags &= SUPPORTED_FIF_FLAGS;
451 *new_flags &= SUPPORTED_FIF_FLAGS;
452
e9bd5bcd
S		 453 if (!changed_flags) {
454 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5 455 return;
e9bd5bcd 456 }
06b16ae5
LCC		 457
458 if (*new_flags & (FIF_PROMISC_IN_BSS))
459 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
460 else
461 priv->mac_control &= ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
462 if (*new_flags & (FIF_ALLMULTI) ||
3ac64bee 463 multicast > MRVDRV_MAX_MULTICAST_LIST_SIZE) {
06b16ae5
LCC		 464 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
465 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
3ac64bee 466 } else if (multicast) {
06b16ae5
LCC		 467 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
468 priv->mac_control &= ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
06b16ae5
LCC		 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);
e9bd5bcd
S		 482
483 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 484}
485
486static 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;
2d0ddec5 492 struct sk_buff *beacon;
e9bd5bcd 493 lbtf_deb_enter(LBTF_DEB_MACOPS);
2d0ddec5
JB		 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 }
06b16ae5
LCC		 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 }
e9bd5bcd
S		 524
525 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 526}
527
528static const struct ieee80211_ops lbtf_ops = {
529 .tx = lbtf_op_tx,
530 .start = lbtf_op_start,
531 .stop = lbtf_op_stop,
532 .add_interface = lbtf_op_add_interface,
533 .remove_interface = lbtf_op_remove_interface,
534 .config = lbtf_op_config,
3ac64bee 535 .prepare_multicast = lbtf_op_prepare_multicast,
06b16ae5
LCC		 536 .configure_filter = lbtf_op_configure_filter,
537 .bss_info_changed = lbtf_op_bss_info_changed,
538};
539
540int lbtf_rx(struct lbtf_private *priv, struct sk_buff *skb)
541{
542 struct ieee80211_rx_status stats;
543 struct rxpd *prxpd;
de9cc7a4 544 int need_padding;
06b16ae5 545 unsigned int flags;
de9cc7a4 546 struct ieee80211_hdr *hdr;
06b16ae5 547
e9bd5bcd
S		 548 lbtf_deb_enter(LBTF_DEB_RX);
549
06b16ae5
LCC		 550 prxpd = (struct rxpd *) skb->data;
551
552 stats.flag = 0;
553 if (!(prxpd->status & cpu_to_le16(MRVDRV_RXPD_STATUS_OK)))
554 stats.flag |= RX_FLAG_FAILED_FCS_CRC;
555 stats.freq = priv->cur_freq;
556 stats.band = IEEE80211_BAND_2GHZ;
557 stats.signal = prxpd->snr;
06b16ae5
LCC		 558 /* Marvell rate index has a hole at value 4 */
559 if (prxpd->rx_rate > 4)
560 --prxpd->rx_rate;
561 stats.rate_idx = prxpd->rx_rate;
562 skb_pull(skb, sizeof(struct rxpd));
563
de9cc7a4 564 hdr = (struct ieee80211_hdr *)skb->data;
06b16ae5
LCC		 565 flags = le32_to_cpu(*(__le32 *)(skb->data + 4));
566
de9cc7a4
HH		 567 need_padding = ieee80211_is_data_qos(hdr->frame_control);
568 need_padding ^= ieee80211_has_a4(hdr->frame_control);
569 need_padding ^= ieee80211_is_data_qos(hdr->frame_control) &&
570 (*ieee80211_get_qos_ctl(hdr) &
571 IEEE80211_QOS_CONTROL_A_MSDU_PRESENT);
06b16ae5 572
06b16ae5
LCC		 573 if (need_padding) {
574 memmove(skb->data + 2, skb->data, skb->len);
575 skb_reserve(skb, 2);
576 }
577
f1d58c25 578 memcpy(IEEE80211_SKB_RXCB(skb), &stats, sizeof(stats));
e9bd5bcd
S		 579
580 lbtf_deb_rx("rx data: skb->len-sizeof(RxPd) = %d-%zd = %zd\n",
581 skb->len, sizeof(struct rxpd), skb->len - sizeof(struct rxpd));
582 lbtf_deb_hex(LBTF_DEB_RX, "RX Data", skb->data,
583 min_t(unsigned int, skb->len, 100));
584
f1d58c25 585 ieee80211_rx_irqsafe(priv->hw, skb);
e9bd5bcd
S		 586
587 lbtf_deb_leave(LBTF_DEB_RX);
06b16ae5
LCC		 588 return 0;
589}
590EXPORT_SYMBOL_GPL(lbtf_rx);
591
592/**
593 * lbtf_add_card: Add and initialize the card, no fw upload yet.
594 *
595 * @card A pointer to card
596 *
597 * Returns: pointer to struct lbtf_priv.
598 */
599struct lbtf_private *lbtf_add_card(void *card, struct device *dmdev)
600{
601 struct ieee80211_hw *hw;
602 struct lbtf_private *priv = NULL;
603
e9bd5bcd
S		 604 lbtf_deb_enter(LBTF_DEB_MAIN);
605
06b16ae5
LCC		 606 hw = ieee80211_alloc_hw(sizeof(struct lbtf_private), &lbtf_ops);
607 if (!hw)
608 goto done;
609
610 priv = hw->priv;
611 if (lbtf_init_adapter(priv))
612 goto err_init_adapter;
613
614 priv->hw = hw;
615 priv->card = card;
616 priv->tx_skb = NULL;
617
618 hw->queues = 1;
619 hw->flags = IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING;
620 hw->extra_tx_headroom = sizeof(struct txpd);
621 memcpy(priv->channels, lbtf_channels, sizeof(lbtf_channels));
622 memcpy(priv->rates, lbtf_rates, sizeof(lbtf_rates));
623 priv->band.n_bitrates = ARRAY_SIZE(lbtf_rates);
624 priv->band.bitrates = priv->rates;
625 priv->band.n_channels = ARRAY_SIZE(lbtf_channels);
626 priv->band.channels = priv->channels;
627 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
f3233831
DS		 628 hw->wiphy->interface_modes =
629 BIT(NL80211_IFTYPE_STATION) |
630 BIT(NL80211_IFTYPE_ADHOC);
06b16ae5
LCC		 631 skb_queue_head_init(&priv->bc_ps_buf);
632
633 SET_IEEE80211_DEV(hw, dmdev);
634
635 INIT_WORK(&priv->cmd_work, lbtf_cmd_work);
636 INIT_WORK(&priv->tx_work, lbtf_tx_work);
637 if (ieee80211_register_hw(hw))
638 goto err_init_adapter;
639
640 goto done;
641
642err_init_adapter:
643 lbtf_free_adapter(priv);
644 ieee80211_free_hw(hw);
645 priv = NULL;
646
647done:
e9bd5bcd 648 lbtf_deb_leave_args(LBTF_DEB_MAIN, "priv %p", priv);
06b16ae5
LCC		 649 return priv;
650}
651EXPORT_SYMBOL_GPL(lbtf_add_card);
652
653
654int lbtf_remove_card(struct lbtf_private *priv)
655{
656 struct ieee80211_hw *hw = priv->hw;
657
e9bd5bcd
S		 658 lbtf_deb_enter(LBTF_DEB_MAIN);
659
06b16ae5
LCC		 660 priv->surpriseremoved = 1;
661 del_timer(&priv->command_timer);
662 lbtf_free_adapter(priv);
663 priv->hw = NULL;
664 ieee80211_unregister_hw(hw);
665 ieee80211_free_hw(hw);
666
e9bd5bcd 667 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 668 return 0;
669}
670EXPORT_SYMBOL_GPL(lbtf_remove_card);
671
672void lbtf_send_tx_feedback(struct lbtf_private *priv, u8 retrycnt, u8 fail)
673{
674 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(priv->tx_skb);
e6a9854b
JB		 675
676 ieee80211_tx_info_clear_status(info);
06b16ae5
LCC		 677 /*
678 * Commented out, otherwise we never go beyond 1Mbit/s using mac80211
679 * default pid rc algorithm.
680 *
681 * info->status.retry_count = MRVL_DEFAULT_RETRIES - retrycnt;
682 */
06b16ae5
LCC		 683 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) && !fail)
684 info->flags |= IEEE80211_TX_STAT_ACK;
685 skb_pull(priv->tx_skb, sizeof(struct txpd));
686 ieee80211_tx_status_irqsafe(priv->hw, priv->tx_skb);
687 priv->tx_skb = NULL;
688 if (!priv->skb_to_tx && skb_queue_empty(&priv->bc_ps_buf))
689 ieee80211_wake_queues(priv->hw);
690 else
691 queue_work(lbtf_wq, &priv->tx_work);
692}
693EXPORT_SYMBOL_GPL(lbtf_send_tx_feedback);
694
695void lbtf_bcn_sent(struct lbtf_private *priv)
696{
697 struct sk_buff *skb = NULL;
698
05c914fe 699 if (priv->vif->type != NL80211_IFTYPE_AP)
06b16ae5
LCC		 700 return;
701
702 if (skb_queue_empty(&priv->bc_ps_buf)) {
703 bool tx_buff_bc = 0;
704
705 while ((skb = ieee80211_get_buffered_bc(priv->hw, priv->vif))) {
706 skb_queue_tail(&priv->bc_ps_buf, skb);
707 tx_buff_bc = 1;
708 }
709 if (tx_buff_bc) {
710 ieee80211_stop_queues(priv->hw);
711 queue_work(lbtf_wq, &priv->tx_work);
712 }
713 }
714
715 skb = ieee80211_beacon_get(priv->hw, priv->vif);
716
717 if (skb) {
718 lbtf_beacon_set(priv, skb);
719 kfree_skb(skb);
720 }
721}
722EXPORT_SYMBOL_GPL(lbtf_bcn_sent);
723
724static int __init lbtf_init_module(void)
725{
e9bd5bcd 726 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 727 lbtf_wq = create_workqueue("libertastf");
728 if (lbtf_wq == NULL) {
729 printk(KERN_ERR "libertastf: couldn't create workqueue\n");
730 return -ENOMEM;
731 }
e9bd5bcd 732 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 733 return 0;
734}
735
736static void __exit lbtf_exit_module(void)
737{
e9bd5bcd 738 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5 739 destroy_workqueue(lbtf_wq);
e9bd5bcd 740 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 741}
742
743module_init(lbtf_init_module);
744module_exit(lbtf_exit_module);
745
746MODULE_DESCRIPTION("Libertas WLAN Thinfirm Driver Library");
747MODULE_AUTHOR("Cozybit Inc.");
748MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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