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wl1251: cleanup scanning code
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blobe038707294a5854a62928a18fd012c24fcbd4f7b
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 #include <linux/vmalloc.h>
32
33 #include "wl1251.h"
34 #include "wl12xx_80211.h"
35 #include "wl1251_reg.h"
36 #include "wl1251_io.h"
37 #include "wl1251_cmd.h"
38 #include "wl1251_event.h"
39 #include "wl1251_tx.h"
40 #include "wl1251_rx.h"
41 #include "wl1251_ps.h"
42 #include "wl1251_init.h"
43 #include "wl1251_debugfs.h"
44 #include "wl1251_boot.h"
45
46 void wl1251_enable_interrupts(struct wl1251 *wl)
47 {
48 wl->if_ops->enable_irq(wl);
49 }
50
51 void wl1251_disable_interrupts(struct wl1251 *wl)
52 {
53 wl->if_ops->disable_irq(wl);
54 }
55
56 static void wl1251_power_off(struct wl1251 *wl)
57 {
58 wl->set_power(false);
59 }
60
61 static void wl1251_power_on(struct wl1251 *wl)
62 {
63 wl->set_power(true);
64 }
65
66 static int wl1251_fetch_firmware(struct wl1251 *wl)
67 {
68 const struct firmware *fw;
69 struct device *dev = wiphy_dev(wl->hw->wiphy);
70 int ret;
71
72 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
73
74 if (ret < 0) {
75 wl1251_error("could not get firmware: %d", ret);
76 return ret;
77 }
78
79 if (fw->size % 4) {
80 wl1251_error("firmware size is not multiple of 32 bits: %zu",
81 fw->size);
82 ret = -EILSEQ;
83 goto out;
84 }
85
86 wl->fw_len = fw->size;
87 wl->fw = vmalloc(wl->fw_len);
88
89 if (!wl->fw) {
90 wl1251_error("could not allocate memory for the firmware");
91 ret = -ENOMEM;
92 goto out;
93 }
94
95 memcpy(wl->fw, fw->data, wl->fw_len);
96
97 ret = 0;
98
99 out:
100 release_firmware(fw);
101
102 return ret;
103 }
104
105 static int wl1251_fetch_nvs(struct wl1251 *wl)
106 {
107 const struct firmware *fw;
108 struct device *dev = wiphy_dev(wl->hw->wiphy);
109 int ret;
110
111 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
112
113 if (ret < 0) {
114 wl1251_error("could not get nvs file: %d", ret);
115 return ret;
116 }
117
118 if (fw->size % 4) {
119 wl1251_error("nvs size is not multiple of 32 bits: %zu",
120 fw->size);
121 ret = -EILSEQ;
122 goto out;
123 }
124
125 wl->nvs_len = fw->size;
126 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
127
128 if (!wl->nvs) {
129 wl1251_error("could not allocate memory for the nvs file");
130 ret = -ENOMEM;
131 goto out;
132 }
133
134 memcpy(wl->nvs, fw->data, wl->nvs_len);
135
136 ret = 0;
137
138 out:
139 release_firmware(fw);
140
141 return ret;
142 }
143
144 static void wl1251_fw_wakeup(struct wl1251 *wl)
145 {
146 u32 elp_reg;
147
148 elp_reg = ELPCTRL_WAKE_UP;
149 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
150 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
151
152 if (!(elp_reg & ELPCTRL_WLAN_READY))
153 wl1251_warning("WLAN not ready");
154 }
155
156 static int wl1251_chip_wakeup(struct wl1251 *wl)
157 {
158 int ret = 0;
159
160 wl1251_power_on(wl);
161 msleep(WL1251_POWER_ON_SLEEP);
162 wl->if_ops->reset(wl);
163
164 /* We don't need a real memory partition here, because we only want
165 * to use the registers at this point. */
166 wl1251_set_partition(wl,
167 0x00000000,
168 0x00000000,
169 REGISTERS_BASE,
170 REGISTERS_DOWN_SIZE);
171
172 /* ELP module wake up */
173 wl1251_fw_wakeup(wl);
174
175 /* whal_FwCtrl_BootSm() */
176
177 /* 0. read chip id from CHIP_ID */
178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
179
180 /* 1. check if chip id is valid */
181
182 switch (wl->chip_id) {
183 case CHIP_ID_1251_PG12:
184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
185 wl->chip_id);
186 break;
187 case CHIP_ID_1251_PG11:
188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
189 wl->chip_id);
190 break;
191 case CHIP_ID_1251_PG10:
192 default:
193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
194 ret = -ENODEV;
195 goto out;
196 }
197
198 if (wl->fw == NULL) {
199 ret = wl1251_fetch_firmware(wl);
200 if (ret < 0)
201 goto out;
202 }
203
204 /* No NVS from netlink, try to get it from the filesystem */
205 if (wl->nvs == NULL) {
206 ret = wl1251_fetch_nvs(wl);
207 if (ret < 0)
208 goto out;
209 }
210
211 out:
212 return ret;
213 }
214
215 #define WL1251_IRQ_LOOP_COUNT 10
216 static void wl1251_irq_work(struct work_struct *work)
217 {
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
219 struct wl1251 *wl =
220 container_of(work, struct wl1251, irq_work);
221 int ret;
222
223 mutex_lock(&wl->mutex);
224
225 wl1251_debug(DEBUG_IRQ, "IRQ work");
226
227 if (wl->state == WL1251_STATE_OFF)
228 goto out;
229
230 ret = wl1251_ps_elp_wakeup(wl);
231 if (ret < 0)
232 goto out;
233
234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
235
236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
238
239 do {
240 if (wl->data_path) {
241 wl->rx_counter = wl1251_mem_read32(
242 wl, wl->data_path->rx_control_addr);
243
244 /* We handle a frmware bug here */
245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
246 case 0:
247 wl1251_debug(DEBUG_IRQ,
248 "RX: FW and host in sync");
249 intr &= ~WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
251 break;
252 case 1:
253 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr &= ~WL1251_ACX_INTR_RX1_DATA;
256 break;
257 case 2:
258 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
259 intr |= WL1251_ACX_INTR_RX0_DATA;
260 intr |= WL1251_ACX_INTR_RX1_DATA;
261 break;
262 default:
263 wl1251_warning(
264 "RX: FW and host out of sync: %d",
265 wl->rx_counter - wl->rx_handled);
266 break;
267 }
268
269 wl->rx_handled = wl->rx_counter;
270
271 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
272 wl->rx_counter);
273 }
274
275 intr &= wl->intr_mask;
276
277 if (intr == 0) {
278 wl1251_debug(DEBUG_IRQ, "INTR is 0");
279 goto out_sleep;
280 }
281
282 if (intr & WL1251_ACX_INTR_RX0_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_RX1_DATA) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
289 wl1251_rx(wl);
290 }
291
292 if (intr & WL1251_ACX_INTR_TX_RESULT) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl);
295 }
296
297 if (intr & (WL1251_ACX_INTR_EVENT_A |
298 WL1251_ACX_INTR_EVENT_B)) {
299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
300 intr);
301 if (intr & WL1251_ACX_INTR_EVENT_A)
302 wl1251_event_handle(wl, 0);
303 else
304 wl1251_event_handle(wl, 1);
305 }
306
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
310
311 if (--ctr == 0)
312 break;
313
314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
315 } while (intr);
316
317 out_sleep:
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
320
321 out:
322 mutex_unlock(&wl->mutex);
323 }
324
325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
326 u16 beacon_interval, u8 dtim_period)
327 {
328 int ret;
329
330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
331 DEFAULT_HW_GEN_MODULATION_TYPE,
332 wl->tx_mgmt_frm_rate,
333 wl->tx_mgmt_frm_mod);
334 if (ret < 0)
335 goto out;
336
337
338 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
339 dtim_period);
340 if (ret < 0)
341 goto out;
342
343 /*
344 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
345 * locking we just sleep instead, for now
346 */
347 msleep(10);
348
349 out:
350 return ret;
351 }
352
353 static void wl1251_filter_work(struct work_struct *work)
354 {
355 struct wl1251 *wl =
356 container_of(work, struct wl1251, filter_work);
357 int ret;
358
359 mutex_lock(&wl->mutex);
360
361 if (wl->state == WL1251_STATE_OFF)
362 goto out;
363
364 ret = wl1251_ps_elp_wakeup(wl);
365 if (ret < 0)
366 goto out;
367
368 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
369 wl->dtim_period);
370 if (ret < 0)
371 goto out_sleep;
372
373 out_sleep:
374 wl1251_ps_elp_sleep(wl);
375
376 out:
377 mutex_unlock(&wl->mutex);
378 }
379
380 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
381 {
382 struct wl1251 *wl = hw->priv;
383
384 skb_queue_tail(&wl->tx_queue, skb);
385
386 /*
387 * The chip specific setup must run before the first TX packet -
388 * before that, the tx_work will not be initialized!
389 */
390
391 ieee80211_queue_work(wl->hw, &wl->tx_work);
392
393 /*
394 * The workqueue is slow to process the tx_queue and we need stop
395 * the queue here, otherwise the queue will get too long.
396 */
397 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
398 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
399 ieee80211_stop_queues(wl->hw);
400
401 /*
402 * FIXME: this is racy, the variable is not properly
403 * protected. Maybe fix this by removing the stupid
404 * variable altogether and checking the real queue state?
405 */
406 wl->tx_queue_stopped = true;
407 }
408
409 return NETDEV_TX_OK;
410 }
411
412 static int wl1251_op_start(struct ieee80211_hw *hw)
413 {
414 struct wl1251 *wl = hw->priv;
415 int ret = 0;
416
417 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
418
419 mutex_lock(&wl->mutex);
420
421 if (wl->state != WL1251_STATE_OFF) {
422 wl1251_error("cannot start because not in off state: %d",
423 wl->state);
424 ret = -EBUSY;
425 goto out;
426 }
427
428 ret = wl1251_chip_wakeup(wl);
429 if (ret < 0)
430 goto out;
431
432 ret = wl1251_boot(wl);
433 if (ret < 0)
434 goto out;
435
436 ret = wl1251_hw_init(wl);
437 if (ret < 0)
438 goto out;
439
440 ret = wl1251_acx_station_id(wl);
441 if (ret < 0)
442 goto out;
443
444 wl->state = WL1251_STATE_ON;
445
446 wl1251_info("firmware booted (%s)", wl->fw_ver);
447
448 out:
449 if (ret < 0)
450 wl1251_power_off(wl);
451
452 mutex_unlock(&wl->mutex);
453
454 return ret;
455 }
456
457 static void wl1251_op_stop(struct ieee80211_hw *hw)
458 {
459 struct wl1251 *wl = hw->priv;
460
461 wl1251_info("down");
462
463 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
464
465 mutex_lock(&wl->mutex);
466
467 WARN_ON(wl->state != WL1251_STATE_ON);
468
469 if (wl->scanning) {
470 mutex_unlock(&wl->mutex);
471 ieee80211_scan_completed(wl->hw, true);
472 mutex_lock(&wl->mutex);
473 wl->scanning = false;
474 }
475
476 wl->state = WL1251_STATE_OFF;
477
478 wl1251_disable_interrupts(wl);
479
480 mutex_unlock(&wl->mutex);
481
482 cancel_work_sync(&wl->irq_work);
483 cancel_work_sync(&wl->tx_work);
484 cancel_work_sync(&wl->filter_work);
485
486 mutex_lock(&wl->mutex);
487
488 /* let's notify MAC80211 about the remaining pending TX frames */
489 wl1251_tx_flush(wl);
490 wl1251_power_off(wl);
491
492 memset(wl->bssid, 0, ETH_ALEN);
493 wl->listen_int = 1;
494 wl->bss_type = MAX_BSS_TYPE;
495
496 wl->data_in_count = 0;
497 wl->rx_counter = 0;
498 wl->rx_handled = 0;
499 wl->rx_current_buffer = 0;
500 wl->rx_last_id = 0;
501 wl->next_tx_complete = 0;
502 wl->elp = false;
503 wl->psm = 0;
504 wl->tx_queue_stopped = false;
505 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
506 wl->channel = WL1251_DEFAULT_CHANNEL;
507
508 wl1251_debugfs_reset(wl);
509
510 mutex_unlock(&wl->mutex);
511 }
512
513 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
514 struct ieee80211_vif *vif)
515 {
516 struct wl1251 *wl = hw->priv;
517 int ret = 0;
518
519 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
520 vif->type, vif->addr);
521
522 mutex_lock(&wl->mutex);
523 if (wl->vif) {
524 ret = -EBUSY;
525 goto out;
526 }
527
528 wl->vif = vif;
529
530 switch (vif->type) {
531 case NL80211_IFTYPE_STATION:
532 wl->bss_type = BSS_TYPE_STA_BSS;
533 break;
534 case NL80211_IFTYPE_ADHOC:
535 wl->bss_type = BSS_TYPE_IBSS;
536 break;
537 default:
538 ret = -EOPNOTSUPP;
539 goto out;
540 }
541
542 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
543 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
544 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
545 ret = wl1251_acx_station_id(wl);
546 if (ret < 0)
547 goto out;
548 }
549
550 out:
551 mutex_unlock(&wl->mutex);
552 return ret;
553 }
554
555 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
556 struct ieee80211_vif *vif)
557 {
558 struct wl1251 *wl = hw->priv;
559
560 mutex_lock(&wl->mutex);
561 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
562 wl->vif = NULL;
563 mutex_unlock(&wl->mutex);
564 }
565
566 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
567 {
568 struct wl1251 *wl = hw->priv;
569 struct ieee80211_conf *conf = &hw->conf;
570 int channel, ret = 0;
571
572 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
573
574 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
575 channel,
576 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
577 conf->power_level);
578
579 mutex_lock(&wl->mutex);
580
581 ret = wl1251_ps_elp_wakeup(wl);
582 if (ret < 0)
583 goto out;
584
585 if (channel != wl->channel) {
586 wl->channel = channel;
587
588 ret = wl1251_join(wl, wl->bss_type, wl->channel,
589 wl->beacon_int, wl->dtim_period);
590 if (ret < 0)
591 goto out_sleep;
592 }
593
594 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
595 wl1251_debug(DEBUG_PSM, "psm enabled");
596
597 wl->psm_requested = true;
598
599 /*
600 * We enter PSM only if we're already associated.
601 * If we're not, we'll enter it when joining an SSID,
602 * through the bss_info_changed() hook.
603 */
604 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
605 if (ret < 0)
606 goto out_sleep;
607 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
608 wl->psm_requested) {
609 wl1251_debug(DEBUG_PSM, "psm disabled");
610
611 wl->psm_requested = false;
612
613 if (wl->psm) {
614 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
615 if (ret < 0)
616 goto out_sleep;
617 }
618 }
619
620 if (conf->power_level != wl->power_level) {
621 ret = wl1251_acx_tx_power(wl, conf->power_level);
622 if (ret < 0)
623 goto out_sleep;
624
625 wl->power_level = conf->power_level;
626 }
627
628 out_sleep:
629 wl1251_ps_elp_sleep(wl);
630
631 out:
632 mutex_unlock(&wl->mutex);
633
634 return ret;
635 }
636
637 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
638 FIF_ALLMULTI | \
639 FIF_FCSFAIL | \
640 FIF_BCN_PRBRESP_PROMISC | \
641 FIF_CONTROL | \
642 FIF_OTHER_BSS)
643
644 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
645 unsigned int changed,
646 unsigned int *total,u64 multicast)
647 {
648 struct wl1251 *wl = hw->priv;
649
650 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
651
652 *total &= WL1251_SUPPORTED_FILTERS;
653 changed &= WL1251_SUPPORTED_FILTERS;
654
655 if (changed == 0)
656 /* no filters which we support changed */
657 return;
658
659 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
660
661 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
662 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
663
664 if (*total & FIF_PROMISC_IN_BSS) {
665 wl->rx_config |= CFG_BSSID_FILTER_EN;
666 wl->rx_config |= CFG_RX_ALL_GOOD;
667 }
668 if (*total & FIF_ALLMULTI)
669 /*
670 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
671 * all multicast frames
672 */
673 wl->rx_config &= ~CFG_MC_FILTER_EN;
674 if (*total & FIF_FCSFAIL)
675 wl->rx_filter |= CFG_RX_FCS_ERROR;
676 if (*total & FIF_BCN_PRBRESP_PROMISC) {
677 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
678 wl->rx_config &= ~CFG_SSID_FILTER_EN;
679 }
680 if (*total & FIF_CONTROL)
681 wl->rx_filter |= CFG_RX_CTL_EN;
682 if (*total & FIF_OTHER_BSS)
683 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
684
685 /*
686 * FIXME: workqueues need to be properly cancelled on stop(), for
687 * now let's just disable changing the filter settings. They will
688 * be updated any on config().
689 */
690 /* schedule_work(&wl->filter_work); */
691 }
692
693 /* HW encryption */
694 static int wl1251_set_key_type(struct wl1251 *wl,
695 struct wl1251_cmd_set_keys *key,
696 enum set_key_cmd cmd,
697 struct ieee80211_key_conf *mac80211_key,
698 const u8 *addr)
699 {
700 switch (mac80211_key->alg) {
701 case ALG_WEP:
702 if (is_broadcast_ether_addr(addr))
703 key->key_type = KEY_WEP_DEFAULT;
704 else
705 key->key_type = KEY_WEP_ADDR;
706
707 mac80211_key->hw_key_idx = mac80211_key->keyidx;
708 break;
709 case ALG_TKIP:
710 if (is_broadcast_ether_addr(addr))
711 key->key_type = KEY_TKIP_MIC_GROUP;
712 else
713 key->key_type = KEY_TKIP_MIC_PAIRWISE;
714
715 mac80211_key->hw_key_idx = mac80211_key->keyidx;
716 break;
717 case ALG_CCMP:
718 if (is_broadcast_ether_addr(addr))
719 key->key_type = KEY_AES_GROUP;
720 else
721 key->key_type = KEY_AES_PAIRWISE;
722 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
723 break;
724 default:
725 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
726 return -EOPNOTSUPP;
727 }
728
729 return 0;
730 }
731
732 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
733 struct ieee80211_vif *vif,
734 struct ieee80211_sta *sta,
735 struct ieee80211_key_conf *key)
736 {
737 struct wl1251 *wl = hw->priv;
738 struct wl1251_cmd_set_keys *wl_cmd;
739 const u8 *addr;
740 int ret;
741
742 static const u8 bcast_addr[ETH_ALEN] =
743 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
744
745 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
746
747 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
748 if (!wl_cmd) {
749 ret = -ENOMEM;
750 goto out;
751 }
752
753 addr = sta ? sta->addr : bcast_addr;
754
755 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
756 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
757 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
758 key->alg, key->keyidx, key->keylen, key->flags);
759 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
760
761 if (is_zero_ether_addr(addr)) {
762 /* We dont support TX only encryption */
763 ret = -EOPNOTSUPP;
764 goto out;
765 }
766
767 mutex_lock(&wl->mutex);
768
769 ret = wl1251_ps_elp_wakeup(wl);
770 if (ret < 0)
771 goto out_unlock;
772
773 switch (cmd) {
774 case SET_KEY:
775 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
776 break;
777 case DISABLE_KEY:
778 wl_cmd->key_action = KEY_REMOVE;
779 break;
780 default:
781 wl1251_error("Unsupported key cmd 0x%x", cmd);
782 break;
783 }
784
785 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
786 if (ret < 0) {
787 wl1251_error("Set KEY type failed");
788 goto out_sleep;
789 }
790
791 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
792 memcpy(wl_cmd->addr, addr, ETH_ALEN);
793
794 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
795 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
796 /*
797 * We get the key in the following form:
798 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
799 * but the target is expecting:
800 * TKIP - RX MIC - TX MIC
801 */
802 memcpy(wl_cmd->key, key->key, 16);
803 memcpy(wl_cmd->key + 16, key->key + 24, 8);
804 memcpy(wl_cmd->key + 24, key->key + 16, 8);
805
806 } else {
807 memcpy(wl_cmd->key, key->key, key->keylen);
808 }
809 wl_cmd->key_size = key->keylen;
810
811 wl_cmd->id = key->keyidx;
812 wl_cmd->ssid_profile = 0;
813
814 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
815
816 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
817 if (ret < 0) {
818 wl1251_warning("could not set keys");
819 goto out_sleep;
820 }
821
822 out_sleep:
823 wl1251_ps_elp_sleep(wl);
824
825 out_unlock:
826 mutex_unlock(&wl->mutex);
827
828 out:
829 kfree(wl_cmd);
830
831 return ret;
832 }
833
834 static int wl1251_build_basic_rates(char *rates)
835 {
836 u8 index = 0;
837
838 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
839 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
840 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
841 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
842
843 return index;
844 }
845
846 static int wl1251_build_extended_rates(char *rates)
847 {
848 u8 index = 0;
849
850 rates[index++] = IEEE80211_OFDM_RATE_6MB;
851 rates[index++] = IEEE80211_OFDM_RATE_9MB;
852 rates[index++] = IEEE80211_OFDM_RATE_12MB;
853 rates[index++] = IEEE80211_OFDM_RATE_18MB;
854 rates[index++] = IEEE80211_OFDM_RATE_24MB;
855 rates[index++] = IEEE80211_OFDM_RATE_36MB;
856 rates[index++] = IEEE80211_OFDM_RATE_48MB;
857 rates[index++] = IEEE80211_OFDM_RATE_54MB;
858
859 return index;
860 }
861
862
863 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
864 {
865 struct wl12xx_probe_req_template template;
866 struct wl12xx_ie_rates *rates;
867 char *ptr;
868 u16 size;
869
870 ptr = (char *)&template;
871 size = sizeof(struct ieee80211_header);
872
873 memset(template.header.da, 0xff, ETH_ALEN);
874 memset(template.header.bssid, 0xff, ETH_ALEN);
875 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
876 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
877
878 /* IEs */
879 /* SSID */
880 template.ssid.header.id = WLAN_EID_SSID;
881 template.ssid.header.len = ssid_len;
882 if (ssid_len && ssid)
883 memcpy(template.ssid.ssid, ssid, ssid_len);
884 size += sizeof(struct wl12xx_ie_header) + ssid_len;
885 ptr += size;
886
887 /* Basic Rates */
888 rates = (struct wl12xx_ie_rates *)ptr;
889 rates->header.id = WLAN_EID_SUPP_RATES;
890 rates->header.len = wl1251_build_basic_rates(rates->rates);
891 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
892 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
893
894 /* Extended rates */
895 rates = (struct wl12xx_ie_rates *)ptr;
896 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
897 rates->header.len = wl1251_build_extended_rates(rates->rates);
898 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
899
900 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
901
902 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
903 size);
904 }
905
906 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
907 struct cfg80211_scan_request *req)
908 {
909 struct wl1251 *wl = hw->priv;
910 size_t ssid_len = 0;
911 u8 *ssid = NULL;
912 int ret;
913
914 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
915
916 if (req->n_ssids) {
917 ssid = req->ssids[0].ssid;
918 ssid_len = req->ssids[0].ssid_len;
919 }
920
921 mutex_lock(&wl->mutex);
922
923 if (wl->scanning) {
924 wl1251_debug(DEBUG_SCAN, "scan already in progress");
925 ret = -EINVAL;
926 goto out;
927 }
928
929 ret = wl1251_ps_elp_wakeup(wl);
930 if (ret < 0)
931 goto out;
932
933 ret = wl1251_build_probe_req(wl, ssid, ssid_len);
934 if (ret < 0)
935 wl1251_error("probe request template build failed");
936
937 ret = wl1251_cmd_trigger_scan_to(wl, 0);
938 if (ret < 0)
939 goto out_sleep;
940
941 wl->scanning = true;
942
943 ret = wl1251_cmd_scan(wl, ssid, ssid_len, 13, 3);
944 if (ret < 0) {
945 wl->scanning = false;
946 goto out_sleep;
947 }
948
949 out_sleep:
950 wl1251_ps_elp_sleep(wl);
951
952 out:
953 mutex_unlock(&wl->mutex);
954
955 return ret;
956 }
957
958 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
959 {
960 struct wl1251 *wl = hw->priv;
961 int ret;
962
963 mutex_lock(&wl->mutex);
964
965 ret = wl1251_ps_elp_wakeup(wl);
966 if (ret < 0)
967 goto out;
968
969 ret = wl1251_acx_rts_threshold(wl, (u16) value);
970 if (ret < 0)
971 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
972
973 wl1251_ps_elp_sleep(wl);
974
975 out:
976 mutex_unlock(&wl->mutex);
977
978 return ret;
979 }
980
981 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
982 struct ieee80211_vif *vif,
983 struct ieee80211_bss_conf *bss_conf,
984 u32 changed)
985 {
986 enum wl1251_cmd_ps_mode mode;
987 struct wl1251 *wl = hw->priv;
988 struct sk_buff *beacon, *skb;
989 int ret;
990
991 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
992
993 mutex_lock(&wl->mutex);
994
995 ret = wl1251_ps_elp_wakeup(wl);
996 if (ret < 0)
997 goto out;
998
999 if (changed & BSS_CHANGED_BSSID) {
1000 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1001
1002 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1003 if (!skb)
1004 goto out_sleep;
1005
1006 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1007 skb->data, skb->len);
1008 dev_kfree_skb(skb);
1009 if (ret < 0)
1010 goto out;
1011
1012 if (wl->bss_type != BSS_TYPE_IBSS) {
1013 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1014 wl->beacon_int, wl->dtim_period);
1015 if (ret < 0)
1016 goto out_sleep;
1017 }
1018 }
1019
1020 if (changed & BSS_CHANGED_ASSOC) {
1021 if (bss_conf->assoc) {
1022 wl->beacon_int = bss_conf->beacon_int;
1023 wl->dtim_period = bss_conf->dtim_period;
1024
1025 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
1026 wl->dtim_period);
1027 wl->aid = bss_conf->aid;
1028
1029 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1030 if (!skb)
1031 goto out_sleep;
1032
1033 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1034 skb->data,
1035 skb->len);
1036 dev_kfree_skb(skb);
1037 if (ret < 0)
1038 goto out_sleep;
1039
1040 ret = wl1251_acx_aid(wl, wl->aid);
1041 if (ret < 0)
1042 goto out_sleep;
1043
1044 /* If we want to go in PSM but we're not there yet */
1045 if (wl->psm_requested && !wl->psm) {
1046 mode = STATION_POWER_SAVE_MODE;
1047 ret = wl1251_ps_set_mode(wl, mode);
1048 if (ret < 0)
1049 goto out_sleep;
1050 }
1051 } else {
1052 /* use defaults when not associated */
1053 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1054 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1055 }
1056 }
1057 if (changed & BSS_CHANGED_ERP_SLOT) {
1058 if (bss_conf->use_short_slot)
1059 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1060 else
1061 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1062 if (ret < 0) {
1063 wl1251_warning("Set slot time failed %d", ret);
1064 goto out_sleep;
1065 }
1066 }
1067
1068 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1069 if (bss_conf->use_short_preamble)
1070 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1071 else
1072 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1073 }
1074
1075 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1076 if (bss_conf->use_cts_prot)
1077 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1078 else
1079 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1080 if (ret < 0) {
1081 wl1251_warning("Set ctsprotect failed %d", ret);
1082 goto out;
1083 }
1084 }
1085
1086 if (changed & BSS_CHANGED_BEACON) {
1087 beacon = ieee80211_beacon_get(hw, vif);
1088 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1089 beacon->len);
1090
1091 if (ret < 0) {
1092 dev_kfree_skb(beacon);
1093 goto out;
1094 }
1095
1096 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1097 beacon->len);
1098
1099 dev_kfree_skb(beacon);
1100
1101 if (ret < 0)
1102 goto out;
1103
1104 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1105 wl->channel, wl->dtim_period);
1106
1107 if (ret < 0)
1108 goto out;
1109 }
1110
1111 out_sleep:
1112 wl1251_ps_elp_sleep(wl);
1113
1114 out:
1115 mutex_unlock(&wl->mutex);
1116 }
1117
1118
1119 /* can't be const, mac80211 writes to this */
1120 static struct ieee80211_rate wl1251_rates[] = {
1121 { .bitrate = 10,
1122 .hw_value = 0x1,
1123 .hw_value_short = 0x1, },
1124 { .bitrate = 20,
1125 .hw_value = 0x2,
1126 .hw_value_short = 0x2,
1127 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1128 { .bitrate = 55,
1129 .hw_value = 0x4,
1130 .hw_value_short = 0x4,
1131 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1132 { .bitrate = 110,
1133 .hw_value = 0x20,
1134 .hw_value_short = 0x20,
1135 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1136 { .bitrate = 60,
1137 .hw_value = 0x8,
1138 .hw_value_short = 0x8, },
1139 { .bitrate = 90,
1140 .hw_value = 0x10,
1141 .hw_value_short = 0x10, },
1142 { .bitrate = 120,
1143 .hw_value = 0x40,
1144 .hw_value_short = 0x40, },
1145 { .bitrate = 180,
1146 .hw_value = 0x80,
1147 .hw_value_short = 0x80, },
1148 { .bitrate = 240,
1149 .hw_value = 0x200,
1150 .hw_value_short = 0x200, },
1151 { .bitrate = 360,
1152 .hw_value = 0x400,
1153 .hw_value_short = 0x400, },
1154 { .bitrate = 480,
1155 .hw_value = 0x800,
1156 .hw_value_short = 0x800, },
1157 { .bitrate = 540,
1158 .hw_value = 0x1000,
1159 .hw_value_short = 0x1000, },
1160 };
1161
1162 /* can't be const, mac80211 writes to this */
1163 static struct ieee80211_channel wl1251_channels[] = {
1164 { .hw_value = 1, .center_freq = 2412},
1165 { .hw_value = 2, .center_freq = 2417},
1166 { .hw_value = 3, .center_freq = 2422},
1167 { .hw_value = 4, .center_freq = 2427},
1168 { .hw_value = 5, .center_freq = 2432},
1169 { .hw_value = 6, .center_freq = 2437},
1170 { .hw_value = 7, .center_freq = 2442},
1171 { .hw_value = 8, .center_freq = 2447},
1172 { .hw_value = 9, .center_freq = 2452},
1173 { .hw_value = 10, .center_freq = 2457},
1174 { .hw_value = 11, .center_freq = 2462},
1175 { .hw_value = 12, .center_freq = 2467},
1176 { .hw_value = 13, .center_freq = 2472},
1177 };
1178
1179 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1180 const struct ieee80211_tx_queue_params *params)
1181 {
1182 struct wl1251 *wl = hw->priv;
1183 int ret;
1184
1185 mutex_lock(&wl->mutex);
1186
1187 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1188
1189 ret = wl1251_ps_elp_wakeup(wl);
1190 if (ret < 0)
1191 goto out;
1192
1193 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1194 params->cw_min, params->cw_max,
1195 params->aifs, params->txop);
1196 if (ret < 0)
1197 goto out_sleep;
1198
1199 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1200 CHANNEL_TYPE_EDCF,
1201 wl1251_tx_get_queue(queue),
1202 WL1251_ACX_PS_SCHEME_LEGACY,
1203 WL1251_ACX_ACK_POLICY_LEGACY);
1204 if (ret < 0)
1205 goto out_sleep;
1206
1207 out_sleep:
1208 wl1251_ps_elp_sleep(wl);
1209
1210 out:
1211 mutex_unlock(&wl->mutex);
1212
1213 return ret;
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 .conf_tx = wl1251_op_conf_tx,
1237 };
1238
1239 static int wl1251_register_hw(struct wl1251 *wl)
1240 {
1241 int ret;
1242
1243 if (wl->mac80211_registered)
1244 return 0;
1245
1246 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1247
1248 ret = ieee80211_register_hw(wl->hw);
1249 if (ret < 0) {
1250 wl1251_error("unable to register mac80211 hw: %d", ret);
1251 return ret;
1252 }
1253
1254 wl->mac80211_registered = true;
1255
1256 wl1251_notice("loaded");
1257
1258 return 0;
1259 }
1260
1261 int wl1251_init_ieee80211(struct wl1251 *wl)
1262 {
1263 int ret;
1264
1265 /* The tx descriptor buffer and the TKIP space */
1266 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1267 + WL1251_TKIP_IV_SPACE;
1268
1269 /* unit us */
1270 /* FIXME: find a proper value */
1271 wl->hw->channel_change_time = 10000;
1272
1273 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1274 IEEE80211_HW_NOISE_DBM |
1275 IEEE80211_HW_SUPPORTS_PS |
1276 IEEE80211_HW_BEACON_FILTER;
1277
1278 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1279 wl->hw->wiphy->max_scan_ssids = 1;
1280 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1281
1282 wl->hw->queues = 4;
1283
1284 ret = wl1251_register_hw(wl);
1285 if (ret)
1286 goto out;
1287
1288 wl1251_debugfs_init(wl);
1289 wl1251_notice("initialized");
1290
1291 ret = 0;
1292
1293 out:
1294 return ret;
1295 }
1296 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1297
1298 struct ieee80211_hw *wl1251_alloc_hw(void)
1299 {
1300 struct ieee80211_hw *hw;
1301 struct wl1251 *wl;
1302 int i;
1303 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1304
1305 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1306 if (!hw) {
1307 wl1251_error("could not alloc ieee80211_hw");
1308 return ERR_PTR(-ENOMEM);
1309 }
1310
1311 wl = hw->priv;
1312 memset(wl, 0, sizeof(*wl));
1313
1314 wl->hw = hw;
1315
1316 wl->data_in_count = 0;
1317
1318 skb_queue_head_init(&wl->tx_queue);
1319
1320 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1321 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1322 wl->channel = WL1251_DEFAULT_CHANNEL;
1323 wl->scanning = false;
1324 wl->default_key = 0;
1325 wl->listen_int = 1;
1326 wl->rx_counter = 0;
1327 wl->rx_handled = 0;
1328 wl->rx_current_buffer = 0;
1329 wl->rx_last_id = 0;
1330 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1331 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1332 wl->elp = false;
1333 wl->psm = 0;
1334 wl->psm_requested = false;
1335 wl->tx_queue_stopped = false;
1336 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1337 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1338 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1339 wl->vif = NULL;
1340
1341 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1342 wl->tx_frames[i] = NULL;
1343
1344 wl->next_tx_complete = 0;
1345
1346 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1347 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1348
1349 /*
1350 * In case our MAC address is not correctly set,
1351 * we use a random but Nokia MAC.
1352 */
1353 memcpy(wl->mac_addr, nokia_oui, 3);
1354 get_random_bytes(wl->mac_addr + 3, 3);
1355
1356 wl->state = WL1251_STATE_OFF;
1357 mutex_init(&wl->mutex);
1358
1359 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1360 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1361
1362 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1363 if (!wl->rx_descriptor) {
1364 wl1251_error("could not allocate memory for rx descriptor");
1365 ieee80211_free_hw(hw);
1366 return ERR_PTR(-ENOMEM);
1367 }
1368
1369 return hw;
1370 }
1371 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1372
1373 int wl1251_free_hw(struct wl1251 *wl)
1374 {
1375 ieee80211_unregister_hw(wl->hw);
1376
1377 wl1251_debugfs_exit(wl);
1378
1379 kfree(wl->target_mem_map);
1380 kfree(wl->data_path);
1381 vfree(wl->fw);
1382 wl->fw = NULL;
1383 kfree(wl->nvs);
1384 wl->nvs = NULL;
1385
1386 kfree(wl->rx_descriptor);
1387 wl->rx_descriptor = NULL;
1388
1389 ieee80211_free_hw(wl->hw);
1390
1391 return 0;
1392 }
1393 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1394
1395 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1396 MODULE_LICENSE("GPL");
1397 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1398 MODULE_ALIAS("spi:wl1251");
1399 MODULE_FIRMWARE(WL1251_FW_NAME);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree