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wl1251: reorder wl1251_cmd_join() arguments
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blob47b82faac6975eb9b52fab7e24fb8e41b684892f
1 /*
2 * This file is part of wl1251
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Kalle Valo <kalle.valo@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/firmware.h>
27 #include <linux/delay.h>
28 #include <linux/irq.h>
29 #include <linux/crc32.h>
30 #include <linux/etherdevice.h>
31
32 #include "wl1251.h"
33 #include "wl12xx_80211.h"
34 #include "reg.h"
35 #include "wl1251_io.h"
36 #include "wl1251_cmd.h"
37 #include "wl1251_event.h"
38 #include "wl1251_tx.h"
39 #include "wl1251_rx.h"
40 #include "wl1251_ps.h"
41 #include "wl1251_init.h"
42 #include "wl1251_debugfs.h"
43 #include "wl1251_boot.h"
44
45 void wl1251_enable_interrupts(struct wl1251 *wl)
46 {
47 wl->if_ops->enable_irq(wl);
48 }
49
50 void wl1251_disable_interrupts(struct wl1251 *wl)
51 {
52 wl->if_ops->disable_irq(wl);
53 }
54
55 static void wl1251_power_off(struct wl1251 *wl)
56 {
57 wl->set_power(false);
58 }
59
60 static void wl1251_power_on(struct wl1251 *wl)
61 {
62 wl->set_power(true);
63 }
64
65 static int wl1251_fetch_firmware(struct wl1251 *wl)
66 {
67 const struct firmware *fw;
68 struct device *dev = wiphy_dev(wl->hw->wiphy);
69 int ret;
70
71 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
72
73 if (ret < 0) {
74 wl1251_error("could not get firmware: %d", ret);
75 return ret;
76 }
77
78 if (fw->size % 4) {
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
80 fw->size);
81 ret = -EILSEQ;
82 goto out;
83 }
84
85 wl->fw_len = fw->size;
86 wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
87
88 if (!wl->fw) {
89 wl1251_error("could not allocate memory for the firmware");
90 ret = -ENOMEM;
91 goto out;
92 }
93
94 memcpy(wl->fw, fw->data, wl->fw_len);
95
96 ret = 0;
97
98 out:
99 release_firmware(fw);
100
101 return ret;
102 }
103
104 static int wl1251_fetch_nvs(struct wl1251 *wl)
105 {
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
108 int ret;
109
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
111
112 if (ret < 0) {
113 wl1251_error("could not get nvs file: %d", ret);
114 return ret;
115 }
116
117 if (fw->size % 4) {
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
119 fw->size);
120 ret = -EILSEQ;
121 goto out;
122 }
123
124 wl->nvs_len = fw->size;
125 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
126
127 if (!wl->nvs) {
128 wl1251_error("could not allocate memory for the nvs file");
129 ret = -ENOMEM;
130 goto out;
131 }
132
133 memcpy(wl->nvs, fw->data, wl->nvs_len);
134
135 ret = 0;
136
137 out:
138 release_firmware(fw);
139
140 return ret;
141 }
142
143 static void wl1251_fw_wakeup(struct wl1251 *wl)
144 {
145 u32 elp_reg;
146
147 elp_reg = ELPCTRL_WAKE_UP;
148 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
150
151 if (!(elp_reg & ELPCTRL_WLAN_READY))
152 wl1251_warning("WLAN not ready");
153 }
154
155 static int wl1251_chip_wakeup(struct wl1251 *wl)
156 {
157 int ret = 0;
158
159 wl1251_power_on(wl);
160 msleep(WL1251_POWER_ON_SLEEP);
161 wl->if_ops->reset(wl);
162
163 /* We don't need a real memory partition here, because we only want
164 * to use the registers at this point. */
165 wl1251_set_partition(wl,
166 0x00000000,
167 0x00000000,
168 REGISTERS_BASE,
169 REGISTERS_DOWN_SIZE);
170
171 /* ELP module wake up */
172 wl1251_fw_wakeup(wl);
173
174 /* whal_FwCtrl_BootSm() */
175
176 /* 0. read chip id from CHIP_ID */
177 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
178
179 /* 1. check if chip id is valid */
180
181 switch (wl->chip_id) {
182 case CHIP_ID_1251_PG12:
183 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
184 wl->chip_id);
185 break;
186 case CHIP_ID_1251_PG10:
187 case CHIP_ID_1251_PG11:
188 default:
189 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
190 ret = -ENODEV;
191 goto out;
192 }
193
194 if (wl->fw == NULL) {
195 ret = wl1251_fetch_firmware(wl);
196 if (ret < 0)
197 goto out;
198 }
199
200 /* No NVS from netlink, try to get it from the filesystem */
201 if (wl->nvs == NULL) {
202 ret = wl1251_fetch_nvs(wl);
203 if (ret < 0)
204 goto out;
205 }
206
207 out:
208 return ret;
209 }
210
211 static void wl1251_irq_work(struct work_struct *work)
212 {
213 u32 intr;
214 struct wl1251 *wl =
215 container_of(work, struct wl1251, irq_work);
216 int ret;
217
218 mutex_lock(&wl->mutex);
219
220 wl1251_debug(DEBUG_IRQ, "IRQ work");
221
222 if (wl->state == WL1251_STATE_OFF)
223 goto out;
224
225 ret = wl1251_ps_elp_wakeup(wl);
226 if (ret < 0)
227 goto out;
228
229 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
230
231 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
232 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
233
234 if (wl->data_path) {
235 wl->rx_counter =
236 wl1251_mem_read32(wl, wl->data_path->rx_control_addr);
237
238 /* We handle a frmware bug here */
239 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
240 case 0:
241 wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync");
242 intr &= ~WL1251_ACX_INTR_RX0_DATA;
243 intr &= ~WL1251_ACX_INTR_RX1_DATA;
244 break;
245 case 1:
246 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
247 intr |= WL1251_ACX_INTR_RX0_DATA;
248 intr &= ~WL1251_ACX_INTR_RX1_DATA;
249 break;
250 case 2:
251 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
252 intr |= WL1251_ACX_INTR_RX0_DATA;
253 intr |= WL1251_ACX_INTR_RX1_DATA;
254 break;
255 default:
256 wl1251_warning("RX: FW and host out of sync: %d",
257 wl->rx_counter - wl->rx_handled);
258 break;
259 }
260
261 wl->rx_handled = wl->rx_counter;
262
263
264 wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter);
265 }
266
267 intr &= wl->intr_mask;
268
269 if (intr == 0) {
270 wl1251_debug(DEBUG_IRQ, "INTR is 0");
271 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
272 ~(wl->intr_mask));
273
274 goto out_sleep;
275 }
276
277 if (intr & WL1251_ACX_INTR_RX0_DATA) {
278 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
279 wl1251_rx(wl);
280 }
281
282 if (intr & WL1251_ACX_INTR_RX1_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_TX_RESULT) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
289 wl1251_tx_complete(wl);
290 }
291
292 if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr);
294 if (intr & WL1251_ACX_INTR_EVENT_A)
295 wl1251_event_handle(wl, 0);
296 else
297 wl1251_event_handle(wl, 1);
298 }
299
300 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
301 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE");
302
303 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
304
305 out_sleep:
306 wl1251_ps_elp_sleep(wl);
307
308 out:
309 mutex_unlock(&wl->mutex);
310 }
311
312 static void wl1251_filter_work(struct work_struct *work)
313 {
314 struct wl1251 *wl =
315 container_of(work, struct wl1251, filter_work);
316 int ret;
317
318 mutex_lock(&wl->mutex);
319
320 if (wl->state == WL1251_STATE_OFF)
321 goto out;
322
323 ret = wl1251_ps_elp_wakeup(wl);
324 if (ret < 0)
325 goto out;
326
327 /* FIXME: replace the magic numbers with proper definitions */
328 ret = wl1251_cmd_join(wl, wl->bss_type, 100, 1, false);
329 if (ret < 0)
330 goto out_sleep;
331
332 out_sleep:
333 wl1251_ps_elp_sleep(wl);
334
335 out:
336 mutex_unlock(&wl->mutex);
337 }
338
339 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
340 {
341 struct wl1251 *wl = hw->priv;
342
343 skb_queue_tail(&wl->tx_queue, skb);
344
345 /*
346 * The chip specific setup must run before the first TX packet -
347 * before that, the tx_work will not be initialized!
348 */
349
350 schedule_work(&wl->tx_work);
351
352 /*
353 * The workqueue is slow to process the tx_queue and we need stop
354 * the queue here, otherwise the queue will get too long.
355 */
356 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
357 ieee80211_stop_queues(wl->hw);
358
359 /*
360 * FIXME: this is racy, the variable is not properly
361 * protected. Maybe fix this by removing the stupid
362 * variable altogether and checking the real queue state?
363 */
364 wl->tx_queue_stopped = true;
365 }
366
367 return NETDEV_TX_OK;
368 }
369
370 static int wl1251_op_start(struct ieee80211_hw *hw)
371 {
372 struct wl1251 *wl = hw->priv;
373 int ret = 0;
374
375 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
376
377 mutex_lock(&wl->mutex);
378
379 if (wl->state != WL1251_STATE_OFF) {
380 wl1251_error("cannot start because not in off state: %d",
381 wl->state);
382 ret = -EBUSY;
383 goto out;
384 }
385
386 ret = wl1251_chip_wakeup(wl);
387 if (ret < 0)
388 goto out;
389
390 ret = wl1251_boot(wl);
391 if (ret < 0)
392 goto out;
393
394 ret = wl1251_hw_init(wl);
395 if (ret < 0)
396 goto out;
397
398 ret = wl1251_acx_station_id(wl);
399 if (ret < 0)
400 goto out;
401
402 wl->state = WL1251_STATE_ON;
403
404 wl1251_info("firmware booted (%s)", wl->fw_ver);
405
406 out:
407 if (ret < 0)
408 wl1251_power_off(wl);
409
410 mutex_unlock(&wl->mutex);
411
412 return ret;
413 }
414
415 static void wl1251_op_stop(struct ieee80211_hw *hw)
416 {
417 struct wl1251 *wl = hw->priv;
418
419 wl1251_info("down");
420
421 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
422
423 mutex_lock(&wl->mutex);
424
425 WARN_ON(wl->state != WL1251_STATE_ON);
426
427 if (wl->scanning) {
428 mutex_unlock(&wl->mutex);
429 ieee80211_scan_completed(wl->hw, true);
430 mutex_lock(&wl->mutex);
431 wl->scanning = false;
432 }
433
434 wl->state = WL1251_STATE_OFF;
435
436 wl1251_disable_interrupts(wl);
437
438 mutex_unlock(&wl->mutex);
439
440 cancel_work_sync(&wl->irq_work);
441 cancel_work_sync(&wl->tx_work);
442 cancel_work_sync(&wl->filter_work);
443
444 mutex_lock(&wl->mutex);
445
446 /* let's notify MAC80211 about the remaining pending TX frames */
447 wl1251_tx_flush(wl);
448 wl1251_power_off(wl);
449
450 memset(wl->bssid, 0, ETH_ALEN);
451 wl->listen_int = 1;
452 wl->bss_type = MAX_BSS_TYPE;
453
454 wl->data_in_count = 0;
455 wl->rx_counter = 0;
456 wl->rx_handled = 0;
457 wl->rx_current_buffer = 0;
458 wl->rx_last_id = 0;
459 wl->next_tx_complete = 0;
460 wl->elp = false;
461 wl->psm = 0;
462 wl->tx_queue_stopped = false;
463 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
464
465 wl1251_debugfs_reset(wl);
466
467 mutex_unlock(&wl->mutex);
468 }
469
470 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
471 struct ieee80211_if_init_conf *conf)
472 {
473 struct wl1251 *wl = hw->priv;
474 int ret = 0;
475
476 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
477 conf->type, conf->mac_addr);
478
479 mutex_lock(&wl->mutex);
480
481 switch (conf->type) {
482 case NL80211_IFTYPE_STATION:
483 wl->bss_type = BSS_TYPE_STA_BSS;
484 break;
485 case NL80211_IFTYPE_ADHOC:
486 wl->bss_type = BSS_TYPE_IBSS;
487 break;
488 default:
489 ret = -EOPNOTSUPP;
490 goto out;
491 }
492
493 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
494 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
495 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
496 ret = wl1251_acx_station_id(wl);
497 if (ret < 0)
498 goto out;
499 }
500
501 out:
502 mutex_unlock(&wl->mutex);
503 return ret;
504 }
505
506 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
507 struct ieee80211_if_init_conf *conf)
508 {
509 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
510 }
511
512 static int wl1251_build_null_data(struct wl1251 *wl)
513 {
514 struct wl12xx_null_data_template template;
515
516 if (!is_zero_ether_addr(wl->bssid)) {
517 memcpy(template.header.da, wl->bssid, ETH_ALEN);
518 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
519 } else {
520 memset(template.header.da, 0xff, ETH_ALEN);
521 memset(template.header.bssid, 0xff, ETH_ALEN);
522 }
523
524 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
525 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
526 IEEE80211_STYPE_NULLFUNC);
527
528 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
529 sizeof(template));
530
531 }
532
533 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
534 {
535 struct wl12xx_ps_poll_template template;
536
537 memcpy(template.bssid, wl->bssid, ETH_ALEN);
538 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
539 template.aid = aid;
540 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
541
542 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
543 sizeof(template));
544
545 }
546
547 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
548 {
549 struct wl1251 *wl = hw->priv;
550 struct ieee80211_conf *conf = &hw->conf;
551 int channel, ret = 0;
552
553 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
554
555 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
556 channel,
557 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
558 conf->power_level);
559
560 mutex_lock(&wl->mutex);
561
562 ret = wl1251_ps_elp_wakeup(wl);
563 if (ret < 0)
564 goto out;
565
566 if (channel != wl->channel) {
567 /* FIXME: use beacon interval provided by mac80211 */
568 ret = wl1251_cmd_join(wl, wl->bss_type, 100, 1, false);
569 if (ret < 0)
570 goto out_sleep;
571
572 wl->channel = channel;
573 }
574
575 ret = wl1251_build_null_data(wl);
576 if (ret < 0)
577 goto out_sleep;
578
579 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
580 wl1251_debug(DEBUG_PSM, "psm enabled");
581
582 wl->psm_requested = true;
583
584 /*
585 * We enter PSM only if we're already associated.
586 * If we're not, we'll enter it when joining an SSID,
587 * through the bss_info_changed() hook.
588 */
589 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
590 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
591 wl->psm_requested) {
592 wl1251_debug(DEBUG_PSM, "psm disabled");
593
594 wl->psm_requested = false;
595
596 if (wl->psm)
597 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
598 }
599
600 if (conf->power_level != wl->power_level) {
601 ret = wl1251_acx_tx_power(wl, conf->power_level);
602 if (ret < 0)
603 goto out;
604
605 wl->power_level = conf->power_level;
606 }
607
608 out_sleep:
609 wl1251_ps_elp_sleep(wl);
610
611 out:
612 mutex_unlock(&wl->mutex);
613
614 return ret;
615 }
616
617 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
618 FIF_ALLMULTI | \
619 FIF_FCSFAIL | \
620 FIF_BCN_PRBRESP_PROMISC | \
621 FIF_CONTROL | \
622 FIF_OTHER_BSS)
623
624 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
625 unsigned int changed,
626 unsigned int *total,
627 int mc_count,
628 struct dev_addr_list *mc_list)
629 {
630 struct wl1251 *wl = hw->priv;
631
632 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
633
634 *total &= WL1251_SUPPORTED_FILTERS;
635 changed &= WL1251_SUPPORTED_FILTERS;
636
637 if (changed == 0)
638 /* no filters which we support changed */
639 return;
640
641 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
642
643 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
644 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
645
646 if (*total & FIF_PROMISC_IN_BSS) {
647 wl->rx_config |= CFG_BSSID_FILTER_EN;
648 wl->rx_config |= CFG_RX_ALL_GOOD;
649 }
650 if (*total & FIF_ALLMULTI)
651 /*
652 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
653 * all multicast frames
654 */
655 wl->rx_config &= ~CFG_MC_FILTER_EN;
656 if (*total & FIF_FCSFAIL)
657 wl->rx_filter |= CFG_RX_FCS_ERROR;
658 if (*total & FIF_BCN_PRBRESP_PROMISC) {
659 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
660 wl->rx_config &= ~CFG_SSID_FILTER_EN;
661 }
662 if (*total & FIF_CONTROL)
663 wl->rx_filter |= CFG_RX_CTL_EN;
664 if (*total & FIF_OTHER_BSS)
665 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
666
667 /*
668 * FIXME: workqueues need to be properly cancelled on stop(), for
669 * now let's just disable changing the filter settings. They will
670 * be updated any on config().
671 */
672 /* schedule_work(&wl->filter_work); */
673 }
674
675 /* HW encryption */
676 static int wl1251_set_key_type(struct wl1251 *wl,
677 struct wl1251_cmd_set_keys *key,
678 enum set_key_cmd cmd,
679 struct ieee80211_key_conf *mac80211_key,
680 const u8 *addr)
681 {
682 switch (mac80211_key->alg) {
683 case ALG_WEP:
684 if (is_broadcast_ether_addr(addr))
685 key->key_type = KEY_WEP_DEFAULT;
686 else
687 key->key_type = KEY_WEP_ADDR;
688
689 mac80211_key->hw_key_idx = mac80211_key->keyidx;
690 break;
691 case ALG_TKIP:
692 if (is_broadcast_ether_addr(addr))
693 key->key_type = KEY_TKIP_MIC_GROUP;
694 else
695 key->key_type = KEY_TKIP_MIC_PAIRWISE;
696
697 mac80211_key->hw_key_idx = mac80211_key->keyidx;
698 break;
699 case ALG_CCMP:
700 if (is_broadcast_ether_addr(addr))
701 key->key_type = KEY_AES_GROUP;
702 else
703 key->key_type = KEY_AES_PAIRWISE;
704 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
705 break;
706 default:
707 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
708 return -EOPNOTSUPP;
709 }
710
711 return 0;
712 }
713
714 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
715 struct ieee80211_vif *vif,
716 struct ieee80211_sta *sta,
717 struct ieee80211_key_conf *key)
718 {
719 struct wl1251 *wl = hw->priv;
720 struct wl1251_cmd_set_keys *wl_cmd;
721 const u8 *addr;
722 int ret;
723
724 static const u8 bcast_addr[ETH_ALEN] =
725 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
726
727 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
728
729 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
730 if (!wl_cmd) {
731 ret = -ENOMEM;
732 goto out;
733 }
734
735 addr = sta ? sta->addr : bcast_addr;
736
737 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
738 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
739 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
740 key->alg, key->keyidx, key->keylen, key->flags);
741 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
742
743 if (is_zero_ether_addr(addr)) {
744 /* We dont support TX only encryption */
745 ret = -EOPNOTSUPP;
746 goto out;
747 }
748
749 mutex_lock(&wl->mutex);
750
751 ret = wl1251_ps_elp_wakeup(wl);
752 if (ret < 0)
753 goto out_unlock;
754
755 switch (cmd) {
756 case SET_KEY:
757 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
758 break;
759 case DISABLE_KEY:
760 wl_cmd->key_action = KEY_REMOVE;
761 break;
762 default:
763 wl1251_error("Unsupported key cmd 0x%x", cmd);
764 break;
765 }
766
767 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
768 if (ret < 0) {
769 wl1251_error("Set KEY type failed");
770 goto out_sleep;
771 }
772
773 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
774 memcpy(wl_cmd->addr, addr, ETH_ALEN);
775
776 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
777 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
778 /*
779 * We get the key in the following form:
780 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
781 * but the target is expecting:
782 * TKIP - RX MIC - TX MIC
783 */
784 memcpy(wl_cmd->key, key->key, 16);
785 memcpy(wl_cmd->key + 16, key->key + 24, 8);
786 memcpy(wl_cmd->key + 24, key->key + 16, 8);
787
788 } else {
789 memcpy(wl_cmd->key, key->key, key->keylen);
790 }
791 wl_cmd->key_size = key->keylen;
792
793 wl_cmd->id = key->keyidx;
794 wl_cmd->ssid_profile = 0;
795
796 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
797
798 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
799 if (ret < 0) {
800 wl1251_warning("could not set keys");
801 goto out_sleep;
802 }
803
804 out_sleep:
805 wl1251_ps_elp_sleep(wl);
806
807 out_unlock:
808 mutex_unlock(&wl->mutex);
809
810 out:
811 kfree(wl_cmd);
812
813 return ret;
814 }
815
816 static int wl1251_build_basic_rates(char *rates)
817 {
818 u8 index = 0;
819
820 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
821 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
822 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
823 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
824
825 return index;
826 }
827
828 static int wl1251_build_extended_rates(char *rates)
829 {
830 u8 index = 0;
831
832 rates[index++] = IEEE80211_OFDM_RATE_6MB;
833 rates[index++] = IEEE80211_OFDM_RATE_9MB;
834 rates[index++] = IEEE80211_OFDM_RATE_12MB;
835 rates[index++] = IEEE80211_OFDM_RATE_18MB;
836 rates[index++] = IEEE80211_OFDM_RATE_24MB;
837 rates[index++] = IEEE80211_OFDM_RATE_36MB;
838 rates[index++] = IEEE80211_OFDM_RATE_48MB;
839 rates[index++] = IEEE80211_OFDM_RATE_54MB;
840
841 return index;
842 }
843
844
845 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
846 {
847 struct wl12xx_probe_req_template template;
848 struct wl12xx_ie_rates *rates;
849 char *ptr;
850 u16 size;
851
852 ptr = (char *)&template;
853 size = sizeof(struct ieee80211_header);
854
855 memset(template.header.da, 0xff, ETH_ALEN);
856 memset(template.header.bssid, 0xff, ETH_ALEN);
857 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
858 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
859
860 /* IEs */
861 /* SSID */
862 template.ssid.header.id = WLAN_EID_SSID;
863 template.ssid.header.len = ssid_len;
864 if (ssid_len && ssid)
865 memcpy(template.ssid.ssid, ssid, ssid_len);
866 size += sizeof(struct wl12xx_ie_header) + ssid_len;
867 ptr += size;
868
869 /* Basic Rates */
870 rates = (struct wl12xx_ie_rates *)ptr;
871 rates->header.id = WLAN_EID_SUPP_RATES;
872 rates->header.len = wl1251_build_basic_rates(rates->rates);
873 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
874 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
875
876 /* Extended rates */
877 rates = (struct wl12xx_ie_rates *)ptr;
878 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
879 rates->header.len = wl1251_build_extended_rates(rates->rates);
880 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
881
882 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
883
884 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
885 size);
886 }
887
888 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
889 u8 active_scan, u8 high_prio, u8 num_channels,
890 u8 probe_requests)
891 {
892 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
893 struct cmd_scan *params = NULL;
894 int i, ret;
895 u16 scan_options = 0;
896
897 if (wl->scanning)
898 return -EINVAL;
899
900 params = kzalloc(sizeof(*params), GFP_KERNEL);
901 if (!params)
902 return -ENOMEM;
903
904 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
905 params->params.rx_filter_options =
906 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
907
908 /* High priority scan */
909 if (!active_scan)
910 scan_options |= SCAN_PASSIVE;
911 if (high_prio)
912 scan_options |= SCAN_PRIORITY_HIGH;
913 params->params.scan_options = scan_options;
914
915 params->params.num_channels = num_channels;
916 params->params.num_probe_requests = probe_requests;
917 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
918 params->params.tid_trigger = 0;
919
920 for (i = 0; i < num_channels; i++) {
921 params->channels[i].min_duration = cpu_to_le32(30000);
922 params->channels[i].max_duration = cpu_to_le32(60000);
923 memset(&params->channels[i].bssid_lsb, 0xff, 4);
924 memset(&params->channels[i].bssid_msb, 0xff, 2);
925 params->channels[i].early_termination = 0;
926 params->channels[i].tx_power_att = 0;
927 params->channels[i].channel = i + 1;
928 memset(params->channels[i].pad, 0, 3);
929 }
930
931 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
932 memset(&params->channels[i], 0,
933 sizeof(struct basic_scan_channel_parameters));
934
935 if (len && ssid) {
936 params->params.ssid_len = len;
937 memcpy(params->params.ssid, ssid, len);
938 } else {
939 params->params.ssid_len = 0;
940 memset(params->params.ssid, 0, 32);
941 }
942
943 ret = wl1251_build_probe_req(wl, ssid, len);
944 if (ret < 0) {
945 wl1251_error("PROBE request template failed");
946 goto out;
947 }
948
949 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
950 if (!trigger)
951 goto out;
952
953 trigger->timeout = 0;
954
955 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
956 sizeof(*trigger));
957 if (ret < 0) {
958 wl1251_error("trigger scan to failed for hw scan");
959 goto out;
960 }
961
962 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
963
964 wl->scanning = true;
965
966 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
967 if (ret < 0)
968 wl1251_error("SCAN failed");
969
970 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
971
972 if (params->header.status != CMD_STATUS_SUCCESS) {
973 wl1251_error("TEST command answer error: %d",
974 params->header.status);
975 wl->scanning = false;
976 ret = -EIO;
977 goto out;
978 }
979
980 out:
981 kfree(params);
982 return ret;
983
984 }
985
986 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
987 struct cfg80211_scan_request *req)
988 {
989 struct wl1251 *wl = hw->priv;
990 int ret;
991 u8 *ssid = NULL;
992 size_t ssid_len = 0;
993
994 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
995
996 if (req->n_ssids) {
997 ssid = req->ssids[0].ssid;
998 ssid_len = req->ssids[0].ssid_len;
999 }
1000
1001 mutex_lock(&wl->mutex);
1002
1003 ret = wl1251_ps_elp_wakeup(wl);
1004 if (ret < 0)
1005 goto out;
1006
1007 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1008
1009 wl1251_ps_elp_sleep(wl);
1010
1011 out:
1012 mutex_unlock(&wl->mutex);
1013
1014 return ret;
1015 }
1016
1017 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1018 {
1019 struct wl1251 *wl = hw->priv;
1020 int ret;
1021
1022 mutex_lock(&wl->mutex);
1023
1024 ret = wl1251_ps_elp_wakeup(wl);
1025 if (ret < 0)
1026 goto out;
1027
1028 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1029 if (ret < 0)
1030 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1031
1032 wl1251_ps_elp_sleep(wl);
1033
1034 out:
1035 mutex_unlock(&wl->mutex);
1036
1037 return ret;
1038 }
1039
1040 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1041 struct ieee80211_vif *vif,
1042 struct ieee80211_bss_conf *bss_conf,
1043 u32 changed)
1044 {
1045 enum wl1251_cmd_ps_mode mode;
1046 struct wl1251 *wl = hw->priv;
1047 struct sk_buff *beacon;
1048 int ret;
1049
1050 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1051
1052 mutex_lock(&wl->mutex);
1053
1054 ret = wl1251_ps_elp_wakeup(wl);
1055 if (ret < 0)
1056 goto out;
1057
1058 if (changed & BSS_CHANGED_ASSOC) {
1059 if (bss_conf->assoc) {
1060 wl->aid = bss_conf->aid;
1061
1062 ret = wl1251_build_ps_poll(wl, wl->aid);
1063 if (ret < 0)
1064 goto out_sleep;
1065
1066 ret = wl1251_acx_aid(wl, wl->aid);
1067 if (ret < 0)
1068 goto out_sleep;
1069
1070 /* If we want to go in PSM but we're not there yet */
1071 if (wl->psm_requested && !wl->psm) {
1072 mode = STATION_POWER_SAVE_MODE;
1073 ret = wl1251_ps_set_mode(wl, mode);
1074 if (ret < 0)
1075 goto out_sleep;
1076 }
1077 }
1078 }
1079 if (changed & BSS_CHANGED_ERP_SLOT) {
1080 if (bss_conf->use_short_slot)
1081 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1082 else
1083 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1084 if (ret < 0) {
1085 wl1251_warning("Set slot time failed %d", ret);
1086 goto out_sleep;
1087 }
1088 }
1089
1090 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1091 if (bss_conf->use_short_preamble)
1092 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1093 else
1094 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1095 }
1096
1097 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1098 if (bss_conf->use_cts_prot)
1099 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1100 else
1101 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1102 if (ret < 0) {
1103 wl1251_warning("Set ctsprotect failed %d", ret);
1104 goto out;
1105 }
1106 }
1107
1108 if (changed & BSS_CHANGED_BSSID) {
1109 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1110
1111 ret = wl1251_build_null_data(wl);
1112 if (ret < 0)
1113 goto out;
1114
1115 if (wl->bss_type != BSS_TYPE_IBSS) {
1116 ret = wl1251_cmd_join(wl, wl->bss_type, 100, 5, true);
1117 if (ret < 0)
1118 goto out_sleep;
1119 wl1251_warning("Set ctsprotect failed %d", ret);
1120 goto out_sleep;
1121 }
1122 }
1123
1124 if (changed & BSS_CHANGED_BEACON) {
1125 beacon = ieee80211_beacon_get(hw, vif);
1126 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1127 beacon->len);
1128
1129 if (ret < 0) {
1130 dev_kfree_skb(beacon);
1131 goto out;
1132 }
1133
1134 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1135 beacon->len);
1136
1137 dev_kfree_skb(beacon);
1138
1139 if (ret < 0)
1140 goto out;
1141
1142 ret = wl1251_cmd_join(wl, wl->bss_type, 100, 1, false);
1143
1144 if (ret < 0)
1145 goto out;
1146 }
1147
1148 out_sleep:
1149 wl1251_ps_elp_sleep(wl);
1150
1151 out:
1152 mutex_unlock(&wl->mutex);
1153 }
1154
1155
1156 /* can't be const, mac80211 writes to this */
1157 static struct ieee80211_rate wl1251_rates[] = {
1158 { .bitrate = 10,
1159 .hw_value = 0x1,
1160 .hw_value_short = 0x1, },
1161 { .bitrate = 20,
1162 .hw_value = 0x2,
1163 .hw_value_short = 0x2,
1164 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1165 { .bitrate = 55,
1166 .hw_value = 0x4,
1167 .hw_value_short = 0x4,
1168 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1169 { .bitrate = 110,
1170 .hw_value = 0x20,
1171 .hw_value_short = 0x20,
1172 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1173 { .bitrate = 60,
1174 .hw_value = 0x8,
1175 .hw_value_short = 0x8, },
1176 { .bitrate = 90,
1177 .hw_value = 0x10,
1178 .hw_value_short = 0x10, },
1179 { .bitrate = 120,
1180 .hw_value = 0x40,
1181 .hw_value_short = 0x40, },
1182 { .bitrate = 180,
1183 .hw_value = 0x80,
1184 .hw_value_short = 0x80, },
1185 { .bitrate = 240,
1186 .hw_value = 0x200,
1187 .hw_value_short = 0x200, },
1188 { .bitrate = 360,
1189 .hw_value = 0x400,
1190 .hw_value_short = 0x400, },
1191 { .bitrate = 480,
1192 .hw_value = 0x800,
1193 .hw_value_short = 0x800, },
1194 { .bitrate = 540,
1195 .hw_value = 0x1000,
1196 .hw_value_short = 0x1000, },
1197 };
1198
1199 /* can't be const, mac80211 writes to this */
1200 static struct ieee80211_channel wl1251_channels[] = {
1201 { .hw_value = 1, .center_freq = 2412},
1202 { .hw_value = 2, .center_freq = 2417},
1203 { .hw_value = 3, .center_freq = 2422},
1204 { .hw_value = 4, .center_freq = 2427},
1205 { .hw_value = 5, .center_freq = 2432},
1206 { .hw_value = 6, .center_freq = 2437},
1207 { .hw_value = 7, .center_freq = 2442},
1208 { .hw_value = 8, .center_freq = 2447},
1209 { .hw_value = 9, .center_freq = 2452},
1210 { .hw_value = 10, .center_freq = 2457},
1211 { .hw_value = 11, .center_freq = 2462},
1212 { .hw_value = 12, .center_freq = 2467},
1213 { .hw_value = 13, .center_freq = 2472},
1214 };
1215
1216 /* can't be const, mac80211 writes to this */
1217 static struct ieee80211_supported_band wl1251_band_2ghz = {
1218 .channels = wl1251_channels,
1219 .n_channels = ARRAY_SIZE(wl1251_channels),
1220 .bitrates = wl1251_rates,
1221 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1222 };
1223
1224 static const struct ieee80211_ops wl1251_ops = {
1225 .start = wl1251_op_start,
1226 .stop = wl1251_op_stop,
1227 .add_interface = wl1251_op_add_interface,
1228 .remove_interface = wl1251_op_remove_interface,
1229 .config = wl1251_op_config,
1230 .configure_filter = wl1251_op_configure_filter,
1231 .tx = wl1251_op_tx,
1232 .set_key = wl1251_op_set_key,
1233 .hw_scan = wl1251_op_hw_scan,
1234 .bss_info_changed = wl1251_op_bss_info_changed,
1235 .set_rts_threshold = wl1251_op_set_rts_threshold,
1236 };
1237
1238 static int wl1251_register_hw(struct wl1251 *wl)
1239 {
1240 int ret;
1241
1242 if (wl->mac80211_registered)
1243 return 0;
1244
1245 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1246
1247 ret = ieee80211_register_hw(wl->hw);
1248 if (ret < 0) {
1249 wl1251_error("unable to register mac80211 hw: %d", ret);
1250 return ret;
1251 }
1252
1253 wl->mac80211_registered = true;
1254
1255 wl1251_notice("loaded");
1256
1257 return 0;
1258 }
1259
1260 int wl1251_init_ieee80211(struct wl1251 *wl)
1261 {
1262 int ret;
1263
1264 /* The tx descriptor buffer and the TKIP space */
1265 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1266 + WL1251_TKIP_IV_SPACE;
1267
1268 /* unit us */
1269 /* FIXME: find a proper value */
1270 wl->hw->channel_change_time = 10000;
1271
1272 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1273 IEEE80211_HW_NOISE_DBM;
1274
1275 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1276 wl->hw->wiphy->max_scan_ssids = 1;
1277 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1278
1279 ret = wl1251_register_hw(wl);
1280 if (ret)
1281 goto out;
1282
1283 wl1251_debugfs_init(wl);
1284 wl1251_notice("initialized");
1285
1286 ret = 0;
1287
1288 out:
1289 return ret;
1290 }
1291 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1292
1293 #define WL1251_DEFAULT_CHANNEL 1
1294 struct ieee80211_hw *wl1251_alloc_hw(void)
1295 {
1296 struct ieee80211_hw *hw;
1297 struct wl1251 *wl;
1298 int i;
1299 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1300
1301 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1302 if (!hw) {
1303 wl1251_error("could not alloc ieee80211_hw");
1304 return ERR_PTR(-ENOMEM);
1305 }
1306
1307 wl = hw->priv;
1308 memset(wl, 0, sizeof(*wl));
1309
1310 wl->hw = hw;
1311
1312 wl->data_in_count = 0;
1313
1314 skb_queue_head_init(&wl->tx_queue);
1315
1316 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1317 wl->channel = WL1251_DEFAULT_CHANNEL;
1318 wl->scanning = false;
1319 wl->default_key = 0;
1320 wl->listen_int = 1;
1321 wl->rx_counter = 0;
1322 wl->rx_handled = 0;
1323 wl->rx_current_buffer = 0;
1324 wl->rx_last_id = 0;
1325 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1326 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1327 wl->elp = false;
1328 wl->psm = 0;
1329 wl->psm_requested = false;
1330 wl->tx_queue_stopped = false;
1331 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1332
1333 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1334 wl->tx_frames[i] = NULL;
1335
1336 wl->next_tx_complete = 0;
1337
1338 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1339 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1340
1341 /*
1342 * In case our MAC address is not correctly set,
1343 * we use a random but Nokia MAC.
1344 */
1345 memcpy(wl->mac_addr, nokia_oui, 3);
1346 get_random_bytes(wl->mac_addr + 3, 3);
1347
1348 wl->state = WL1251_STATE_OFF;
1349 mutex_init(&wl->mutex);
1350
1351 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1352 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1353
1354 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1355 if (!wl->rx_descriptor) {
1356 wl1251_error("could not allocate memory for rx descriptor");
1357 ieee80211_free_hw(hw);
1358 return ERR_PTR(-ENOMEM);
1359 }
1360
1361 return hw;
1362 }
1363 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1364
1365 int wl1251_free_hw(struct wl1251 *wl)
1366 {
1367 ieee80211_unregister_hw(wl->hw);
1368
1369 wl1251_debugfs_exit(wl);
1370
1371 kfree(wl->target_mem_map);
1372 kfree(wl->data_path);
1373 kfree(wl->fw);
1374 wl->fw = NULL;
1375 kfree(wl->nvs);
1376 wl->nvs = NULL;
1377
1378 kfree(wl->rx_descriptor);
1379 wl->rx_descriptor = NULL;
1380
1381 ieee80211_free_hw(wl->hw);
1382
1383 return 0;
1384 }
1385 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1386
1387 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1388 MODULE_LICENSE("GPL");
1389 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>");
1390 MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
(deprecated) Btrfs devel tree