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Merge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuil...
[net-next-2.6.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 */
edfcba15
JL		 10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
11
5a0e3ad6
TH		 12#include <linux/slab.h>
13
edfcba15 14#include <linux/etherdevice.h>
06b16ae5 15#include "libertas_tf.h"
06b16ae5
LCC		 16
17#define DRIVER_RELEASE_VERSION "004.p0"
18/* thinfirm version: 5.132.X.pX */
19#define LBTF_FW_VER_MIN 0x05840300
20#define LBTF_FW_VER_MAX 0x0584ffff
21#define QOS_CONTROL_LEN 2
22
e9bd5bcd
S		 23/* Module parameters */
24unsigned int lbtf_debug;
25EXPORT_SYMBOL_GPL(lbtf_debug);
26module_param_named(libertas_tf_debug, lbtf_debug, int, 0644);
27
28static const char lbtf_driver_version[] = "THINFIRM-USB8388-" DRIVER_RELEASE_VERSION
29#ifdef DEBUG
30 "-dbg"
31#endif
32 "";
33
06b16ae5
LCC		 34struct workqueue_struct *lbtf_wq;
35
36static const struct ieee80211_channel lbtf_channels[] = {
37 { .center_freq = 2412, .hw_value = 1 },
38 { .center_freq = 2417, .hw_value = 2 },
39 { .center_freq = 2422, .hw_value = 3 },
40 { .center_freq = 2427, .hw_value = 4 },
41 { .center_freq = 2432, .hw_value = 5 },
42 { .center_freq = 2437, .hw_value = 6 },
43 { .center_freq = 2442, .hw_value = 7 },
44 { .center_freq = 2447, .hw_value = 8 },
45 { .center_freq = 2452, .hw_value = 9 },
46 { .center_freq = 2457, .hw_value = 10 },
47 { .center_freq = 2462, .hw_value = 11 },
48 { .center_freq = 2467, .hw_value = 12 },
49 { .center_freq = 2472, .hw_value = 13 },
50 { .center_freq = 2484, .hw_value = 14 },
51};
52
53/* This table contains the hardware specific values for the modulation rates. */
54static const struct ieee80211_rate lbtf_rates[] = {
55 { .bitrate = 10,
56 .hw_value = 0, },
57 { .bitrate = 20,
58 .hw_value = 1,
59 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
60 { .bitrate = 55,
61 .hw_value = 2,
62 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
63 { .bitrate = 110,
64 .hw_value = 3,
65 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
66 { .bitrate = 60,
67 .hw_value = 5,
68 .flags = 0 },
69 { .bitrate = 90,
70 .hw_value = 6,
71 .flags = 0 },
72 { .bitrate = 120,
73 .hw_value = 7,
74 .flags = 0 },
75 { .bitrate = 180,
76 .hw_value = 8,
77 .flags = 0 },
78 { .bitrate = 240,
79 .hw_value = 9,
80 .flags = 0 },
81 { .bitrate = 360,
82 .hw_value = 10,
83 .flags = 0 },
84 { .bitrate = 480,
85 .hw_value = 11,
86 .flags = 0 },
87 { .bitrate = 540,
88 .hw_value = 12,
89 .flags = 0 },
90};
91
92static void lbtf_cmd_work(struct work_struct *work)
93{
94 struct lbtf_private *priv = container_of(work, struct lbtf_private,
95 cmd_work);
e9bd5bcd
S		 96
97 lbtf_deb_enter(LBTF_DEB_CMD);
98
06b16ae5
LCC		 99 spin_lock_irq(&priv->driver_lock);
100 /* command response? */
101 if (priv->cmd_response_rxed) {
102 priv->cmd_response_rxed = 0;
103 spin_unlock_irq(&priv->driver_lock);
104 lbtf_process_rx_command(priv);
105 spin_lock_irq(&priv->driver_lock);
106 }
107
108 if (priv->cmd_timed_out && priv->cur_cmd) {
109 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
110
111 if (++priv->nr_retries > 10) {
112 lbtf_complete_command(priv, cmdnode,
113 -ETIMEDOUT);
114 priv->nr_retries = 0;
115 } else {
116 priv->cur_cmd = NULL;
117
118 /* Stick it back at the _top_ of the pending
119 * queue for immediate resubmission */
120 list_add(&cmdnode->list, &priv->cmdpendingq);
121 }
122 }
123 priv->cmd_timed_out = 0;
124 spin_unlock_irq(&priv->driver_lock);
125
e9bd5bcd
S		 126 if (!priv->fw_ready) {
127 lbtf_deb_leave_args(LBTF_DEB_CMD, "fw not ready");
06b16ae5 128 return;
e9bd5bcd
S		 129 }
130
06b16ae5
LCC		 131 /* Execute the next command */
132 if (!priv->cur_cmd)
133 lbtf_execute_next_command(priv);
e9bd5bcd
S		 134
135 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 136}
137
138/**
139 * lbtf_setup_firmware: initialize firmware.
140 *
141 * @priv A pointer to struct lbtf_private structure
142 *
143 * Returns: 0 on success.
144 */
145static int lbtf_setup_firmware(struct lbtf_private *priv)
146{
147 int ret = -1;
148
e9bd5bcd 149 lbtf_deb_enter(LBTF_DEB_FW);
06b16ae5
LCC		 150 /*
151 * Read priv address from HW
152 */
153 memset(priv->current_addr, 0xff, ETH_ALEN);
154 ret = lbtf_update_hw_spec(priv);
155 if (ret) {
156 ret = -1;
157 goto done;
158 }
159
160 lbtf_set_mac_control(priv);
161 lbtf_set_radio_control(priv);
162
163 ret = 0;
164done:
e9bd5bcd 165 lbtf_deb_leave_args(LBTF_DEB_FW, "ret: %d", ret);
06b16ae5
LCC		 166 return ret;
167}
168
169/**
170 * This function handles the timeout of command sending.
171 * It will re-send the same command again.
172 */
173static void command_timer_fn(unsigned long data)
174{
175 struct lbtf_private *priv = (struct lbtf_private *)data;
176 unsigned long flags;
e9bd5bcd 177 lbtf_deb_enter(LBTF_DEB_CMD);
06b16ae5
LCC		 178
179 spin_lock_irqsave(&priv->driver_lock, flags);
180
181 if (!priv->cur_cmd) {
182 printk(KERN_DEBUG "libertastf: command timer expired; "
183 "no pending command\n");
184 goto out;
185 }
186
187 printk(KERN_DEBUG "libertas: command %x timed out\n",
188 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
189
190 priv->cmd_timed_out = 1;
191 queue_work(lbtf_wq, &priv->cmd_work);
192out:
193 spin_unlock_irqrestore(&priv->driver_lock, flags);
e9bd5bcd 194 lbtf_deb_leave(LBTF_DEB_CMD);
06b16ae5
LCC		 195}
196
197static int lbtf_init_adapter(struct lbtf_private *priv)
198{
e9bd5bcd 199 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 200 memset(priv->current_addr, 0xff, ETH_ALEN);
201 mutex_init(&priv->lock);
202
203 priv->vif = NULL;
204 setup_timer(&priv->command_timer, command_timer_fn,
205 (unsigned long)priv);
206
207 INIT_LIST_HEAD(&priv->cmdfreeq);
208 INIT_LIST_HEAD(&priv->cmdpendingq);
209
210 spin_lock_init(&priv->driver_lock);
211
212 /* Allocate the command buffers */
213 if (lbtf_allocate_cmd_buffer(priv))
214 return -1;
215
e9bd5bcd 216 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 217 return 0;
218}
219
220static void lbtf_free_adapter(struct lbtf_private *priv)
221{
e9bd5bcd 222 lbtf_deb_enter(LBTF_DEB_MAIN);
06b16ae5
LCC		 223 lbtf_free_cmd_buffer(priv);
224 del_timer(&priv->command_timer);
e9bd5bcd 225 lbtf_deb_leave(LBTF_DEB_MAIN);
06b16ae5
LCC		 226}
227
228static int lbtf_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
229{
230 struct lbtf_private *priv = hw->priv;
231
232 priv->skb_to_tx = skb;
233 queue_work(lbtf_wq, &priv->tx_work);
234 /*
235 * queue will be restarted when we receive transmission feedback if
236 * there are no buffered multicast frames to send
237 */
238 ieee80211_stop_queues(priv->hw);
51e99158 239 return NETDEV_TX_OK;
06b16ae5
LCC		 240}
241
242static void lbtf_tx_work(struct work_struct *work)
243{
244 struct lbtf_private *priv = container_of(work, struct lbtf_private,
245 tx_work);
246 unsigned int len;
247 struct ieee80211_tx_info *info;
248 struct txpd *txpd;
249 struct sk_buff *skb = NULL;
250 int err;
251
e9bd5bcd
S		 252 lbtf_deb_enter(LBTF_DEB_MACOPS | LBTF_DEB_TX);
253
05c914fe 254 if ((priv->vif->type == NL80211_IFTYPE_AP) &&
06b16ae5
LCC		 255 (!skb_queue_empty(&priv->bc_ps_buf)))
256 skb = skb_dequeue(&priv->bc_ps_buf);
257 else if (priv->skb_to_tx) {
258 skb = priv->skb_to_tx;
259 priv->skb_to_tx = NULL;
e9bd5bcd
S		 260 } else {
261 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5 262 return;
e9bd5bcd 263 }
06b16ae5
LCC		 264
265 len = skb->len;
266 info = IEEE80211_SKB_CB(skb);
267 txpd = (struct txpd *) skb_push(skb, sizeof(struct txpd));
268
269 if (priv->surpriseremoved) {
270 dev_kfree_skb_any(skb);
e9bd5bcd 271 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 272 return;
273 }
274
275 memset(txpd, 0, sizeof(struct txpd));
276 /* Activate per-packet rate selection */
277 txpd->tx_control |= cpu_to_le32(MRVL_PER_PACKET_RATE |
278 ieee80211_get_tx_rate(priv->hw, info)->hw_value);
279
280 /* copy destination address from 802.11 header */
281 memcpy(txpd->tx_dest_addr_high, skb->data + sizeof(struct txpd) + 4,
282 ETH_ALEN);
283 txpd->tx_packet_length = cpu_to_le16(len);
284 txpd->tx_packet_location = cpu_to_le32(sizeof(struct txpd));
e9bd5bcd 285 lbtf_deb_hex(LBTF_DEB_TX, "TX Data", skb->data, min_t(unsigned int, skb->len, 100));
06b16ae5
LCC		 286 BUG_ON(priv->tx_skb);
287 spin_lock_irq(&priv->driver_lock);
288 priv->tx_skb = skb;
289 err = priv->hw_host_to_card(priv, MVMS_DAT, skb->data, skb->len);
290 spin_unlock_irq(&priv->driver_lock);
291 if (err) {
292 dev_kfree_skb_any(skb);
293 priv->tx_skb = NULL;
e9bd5bcd 294 pr_err("TX error: %d", err);
06b16ae5 295 }
e9bd5bcd 296 lbtf_deb_leave(LBTF_DEB_MACOPS | LBTF_DEB_TX);
06b16ae5
LCC		 297}
298
299static int lbtf_op_start(struct ieee80211_hw *hw)
300{
301 struct lbtf_private *priv = hw->priv;
302 void *card = priv->card;
303 int ret = -1;
304
e9bd5bcd
S		 305 lbtf_deb_enter(LBTF_DEB_MACOPS);
306
06b16ae5
LCC		 307 if (!priv->fw_ready)
308 /* Upload firmware */
309 if (priv->hw_prog_firmware(card))
310 goto err_prog_firmware;
311
312 /* poke the firmware */
313 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
314 priv->radioon = RADIO_ON;
315 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
316 ret = lbtf_setup_firmware(priv);
317 if (ret)
318 goto err_prog_firmware;
319
320 if ((priv->fwrelease < LBTF_FW_VER_MIN) ||
321 (priv->fwrelease > LBTF_FW_VER_MAX)) {
322 ret = -1;
323 goto err_prog_firmware;
324 }
325
326 printk(KERN_INFO "libertastf: Marvell WLAN 802.11 thinfirm adapter\n");
e9bd5bcd 327 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 328 return 0;
329
330err_prog_firmware:
331 priv->hw_reset_device(card);
e9bd5bcd 332 lbtf_deb_leave_args(LBTF_DEB_MACOPS, "error programing fw; ret=%d", ret);
06b16ae5
LCC		 333 return ret;
334}
335
336static void lbtf_op_stop(struct ieee80211_hw *hw)
337{
338 struct lbtf_private *priv = hw->priv;
339 unsigned long flags;
340 struct sk_buff *skb;
341
342 struct cmd_ctrl_node *cmdnode;
e9bd5bcd
S		 343
344 lbtf_deb_enter(LBTF_DEB_MACOPS);
345
06b16ae5
LCC		 346 /* Flush pending command nodes */
347 spin_lock_irqsave(&priv->driver_lock, flags);
348 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
349 cmdnode->result = -ENOENT;
350 cmdnode->cmdwaitqwoken = 1;
351 wake_up_interruptible(&cmdnode->cmdwait_q);
352 }
353
354 spin_unlock_irqrestore(&priv->driver_lock, flags);
355 cancel_work_sync(&priv->cmd_work);
356 cancel_work_sync(&priv->tx_work);
357 while ((skb = skb_dequeue(&priv->bc_ps_buf)))
358 dev_kfree_skb_any(skb);
359 priv->radioon = RADIO_OFF;
360 lbtf_set_radio_control(priv);
361
e9bd5bcd 362 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 363}
364
365static int lbtf_op_add_interface(struct ieee80211_hw *hw,
1ed32e4f 366 struct ieee80211_vif *vif)
06b16ae5
LCC		 367{
368 struct lbtf_private *priv = hw->priv;
e9bd5bcd 369 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5
LCC		 370 if (priv->vif != NULL)
371 return -EOPNOTSUPP;
372
1ed32e4f
JB		 373 priv->vif = vif;
374 switch (vif->type) {
05c914fe
JB		 375 case NL80211_IFTYPE_MESH_POINT:
376 case NL80211_IFTYPE_AP:
06b16ae5
LCC		 377 lbtf_set_mode(priv, LBTF_AP_MODE);
378 break;
05c914fe 379 case NL80211_IFTYPE_STATION:
06b16ae5
LCC		 380 lbtf_set_mode(priv, LBTF_STA_MODE);
381 break;
382 default:
383 priv->vif = NULL;
384 return -EOPNOTSUPP;
385 }
1ed32e4f 386 lbtf_set_mac_address(priv, (u8 *) vif->addr);
e9bd5bcd 387 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 388 return 0;
389}
390
391static void lbtf_op_remove_interface(struct ieee80211_hw *hw,
1ed32e4f 392 struct ieee80211_vif *vif)
06b16ae5
LCC		 393{
394 struct lbtf_private *priv = hw->priv;
e9bd5bcd 395 lbtf_deb_enter(LBTF_DEB_MACOPS);
06b16ae5 396
05c914fe
JB		 397 if (priv->vif->type == NL80211_IFTYPE_AP ||
398 priv->vif->type == NL80211_IFTYPE_MESH_POINT)
06b16ae5
LCC		 399 lbtf_beacon_ctrl(priv, 0, 0);
400 lbtf_set_mode(priv, LBTF_PASSIVE_MODE);
401 lbtf_set_bssid(priv, 0, NULL);
402 priv->vif = NULL;
e9bd5bcd 403 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 404}
405
e8975581 406static int lbtf_op_config(struct ieee80211_hw *hw, u32 changed)
06b16ae5
LCC		 407{
408 struct lbtf_private *priv = hw->priv;
e8975581 409 struct ieee80211_conf *conf = &hw->conf;
e9bd5bcd 410 lbtf_deb_enter(LBTF_DEB_MACOPS);
e8975581 411
06b16ae5
LCC		 412 if (conf->channel->center_freq != priv->cur_freq) {
413 priv->cur_freq = conf->channel->center_freq;
414 lbtf_set_channel(priv, conf->channel->hw_value);
415 }
e9bd5bcd 416 lbtf_deb_leave(LBTF_DEB_MACOPS);
06b16ae5
LCC		 417 return 0;
418}
419
3ac64bee 420static u64 lbtf_op_prepare_multicast(struct ieee80211_hw *hw,
22bedad3 421 struct netdev_hw_addr_list *mc_list)
3ac64bee
JB		 422{
423 struct lbtf_private *priv = hw->priv;
424 int i;
22bedad3
JP		 425 struct netdev_hw_addr *ha;
426 int mc_count = netdev_hw_addr_list_count(mc_list);
3ac64bee
JB		 427
428 if (!mc_count || mc_count > MRVDRV_MAX_MULTICAST_LIST_SIZE)
429 return mc_count;
430
431 priv->nr_of_multicastmacaddr = mc_count;
22bedad3
JP		 432 i = 0;
433 netdev_hw_addr_list_for_each(ha, mc_list)
434 memcpy(&priv->multicastlist[i++], ha->addr, ETH_ALEN);
3ac64bee
JB		 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
13deb23a 552 memset(&stats, 0, sizeof(stats));
06b16ae5
LCC		 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");
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