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wl1251: add wl1251 prefix to all 1251 files
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blob16cd46c7164bcee3ffdca9c13971c739b3edb8e9
1 /*
2 * This file is part of wl12xx
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/spi/spi.h>
30 #include <linux/crc32.h>
31 #include <linux/etherdevice.h>
32 #include <linux/spi/wl12xx.h>
33
34 #include "wl12xx.h"
35 #include "wl12xx_80211.h"
36 #include "reg.h"
37 #include "wl1251_ops.h"
38 #include "wl1251_spi.h"
39 #include "wl1251_event.h"
40 #include "wl1251_tx.h"
41 #include "wl1251_rx.h"
42 #include "wl1251_ps.h"
43 #include "wl1251_init.h"
44 #include "wl1251_debugfs.h"
45
46 static void wl12xx_disable_interrupts(struct wl12xx *wl)
47 {
48 disable_irq(wl->irq);
49 }
50
51 static void wl12xx_power_off(struct wl12xx *wl)
52 {
53 wl->set_power(false);
54 }
55
56 static void wl12xx_power_on(struct wl12xx *wl)
57 {
58 wl->set_power(true);
59 }
60
61 static irqreturn_t wl12xx_irq(int irq, void *cookie)
62 {
63 struct wl12xx *wl;
64
65 wl12xx_debug(DEBUG_IRQ, "IRQ");
66
67 wl = cookie;
68
69 schedule_work(&wl->irq_work);
70
71 return IRQ_HANDLED;
72 }
73
74 static int wl12xx_fetch_firmware(struct wl12xx *wl)
75 {
76 const struct firmware *fw;
77 int ret;
78
79 ret = request_firmware(&fw, wl->chip.fw_filename, &wl->spi->dev);
80
81 if (ret < 0) {
82 wl12xx_error("could not get firmware: %d", ret);
83 return ret;
84 }
85
86 if (fw->size % 4) {
87 wl12xx_error("firmware size is not multiple of 32 bits: %zu",
88 fw->size);
89 ret = -EILSEQ;
90 goto out;
91 }
92
93 wl->fw_len = fw->size;
94 wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
95
96 if (!wl->fw) {
97 wl12xx_error("could not allocate memory for the firmware");
98 ret = -ENOMEM;
99 goto out;
100 }
101
102 memcpy(wl->fw, fw->data, wl->fw_len);
103
104 ret = 0;
105
106 out:
107 release_firmware(fw);
108
109 return ret;
110 }
111
112 static int wl12xx_fetch_nvs(struct wl12xx *wl)
113 {
114 const struct firmware *fw;
115 int ret;
116
117 ret = request_firmware(&fw, wl->chip.nvs_filename, &wl->spi->dev);
118
119 if (ret < 0) {
120 wl12xx_error("could not get nvs file: %d", ret);
121 return ret;
122 }
123
124 if (fw->size % 4) {
125 wl12xx_error("nvs size is not multiple of 32 bits: %zu",
126 fw->size);
127 ret = -EILSEQ;
128 goto out;
129 }
130
131 wl->nvs_len = fw->size;
132 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
133
134 if (!wl->nvs) {
135 wl12xx_error("could not allocate memory for the nvs file");
136 ret = -ENOMEM;
137 goto out;
138 }
139
140 memcpy(wl->nvs, fw->data, wl->nvs_len);
141
142 ret = 0;
143
144 out:
145 release_firmware(fw);
146
147 return ret;
148 }
149
150 static void wl12xx_fw_wakeup(struct wl12xx *wl)
151 {
152 u32 elp_reg;
153
154 elp_reg = ELPCTRL_WAKE_UP;
155 wl12xx_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
156 elp_reg = wl12xx_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
157
158 if (!(elp_reg & ELPCTRL_WLAN_READY)) {
159 wl12xx_warning("WLAN not ready");
160 }
161 }
162
163 static int wl12xx_chip_wakeup(struct wl12xx *wl)
164 {
165 int ret = 0;
166
167 wl12xx_power_on(wl);
168 msleep(wl->chip.power_on_sleep);
169 wl12xx_spi_reset(wl);
170 wl12xx_spi_init(wl);
171
172 /* We don't need a real memory partition here, because we only want
173 * to use the registers at this point. */
174 wl12xx_set_partition(wl,
175 0x00000000,
176 0x00000000,
177 REGISTERS_BASE,
178 REGISTERS_DOWN_SIZE);
179
180 /* ELP module wake up */
181 wl12xx_fw_wakeup(wl);
182
183 /* whal_FwCtrl_BootSm() */
184
185 /* 0. read chip id from CHIP_ID */
186 wl->chip.id = wl12xx_reg_read32(wl, CHIP_ID_B);
187
188 /* 1. check if chip id is valid */
189
190 switch (wl->chip.id) {
191 case CHIP_ID_1251_PG12:
192 wl12xx_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
193 wl->chip.id);
194
195 wl1251_setup(wl);
196
197 break;
198 case CHIP_ID_1251_PG10:
199 case CHIP_ID_1251_PG11:
200 default:
201 wl12xx_error("unsupported chip id: 0x%x", wl->chip.id);
202 ret = -ENODEV;
203 goto out;
204 }
205
206 if (wl->fw == NULL) {
207 ret = wl12xx_fetch_firmware(wl);
208 if (ret < 0)
209 goto out;
210 }
211
212 /* No NVS from netlink, try to get it from the filesystem */
213 if (wl->nvs == NULL) {
214 ret = wl12xx_fetch_nvs(wl);
215 if (ret < 0)
216 goto out;
217 }
218
219 out:
220 return ret;
221 }
222
223 static void wl12xx_filter_work(struct work_struct *work)
224 {
225 struct wl12xx *wl =
226 container_of(work, struct wl12xx, filter_work);
227 int ret;
228
229 mutex_lock(&wl->mutex);
230
231 if (wl->state == WL12XX_STATE_OFF)
232 goto out;
233
234 ret = wl12xx_ps_elp_wakeup(wl);
235 if (ret < 0)
236 goto out;
237
238 /* FIXME: replace the magic numbers with proper definitions */
239 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
240 if (ret < 0)
241 goto out_sleep;
242
243 out_sleep:
244 wl12xx_ps_elp_sleep(wl);
245
246 out:
247 mutex_unlock(&wl->mutex);
248 }
249
250 int wl12xx_plt_start(struct wl12xx *wl)
251 {
252 int ret;
253
254 wl12xx_notice("power up");
255
256 if (wl->state != WL12XX_STATE_OFF) {
257 wl12xx_error("cannot go into PLT state because not "
258 "in off state: %d", wl->state);
259 return -EBUSY;
260 }
261
262 wl->state = WL12XX_STATE_PLT;
263
264 ret = wl12xx_chip_wakeup(wl);
265 if (ret < 0)
266 return ret;
267
268 ret = wl->chip.op_boot(wl);
269 if (ret < 0)
270 return ret;
271
272 wl12xx_notice("firmware booted in PLT mode (%s)", wl->chip.fw_ver);
273
274 ret = wl->chip.op_plt_init(wl);
275 if (ret < 0)
276 return ret;
277
278 return 0;
279 }
280
281 int wl12xx_plt_stop(struct wl12xx *wl)
282 {
283 wl12xx_notice("power down");
284
285 if (wl->state != WL12XX_STATE_PLT) {
286 wl12xx_error("cannot power down because not in PLT "
287 "state: %d", wl->state);
288 return -EBUSY;
289 }
290
291 wl12xx_disable_interrupts(wl);
292 wl12xx_power_off(wl);
293
294 wl->state = WL12XX_STATE_OFF;
295
296 return 0;
297 }
298
299
300 static int wl12xx_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
301 {
302 struct wl12xx *wl = hw->priv;
303
304 skb_queue_tail(&wl->tx_queue, skb);
305
306 /*
307 * The chip specific setup must run before the first TX packet -
308 * before that, the tx_work will not be initialized!
309 */
310
311 schedule_work(&wl->tx_work);
312
313 /*
314 * The workqueue is slow to process the tx_queue and we need stop
315 * the queue here, otherwise the queue will get too long.
316 */
317 if (skb_queue_len(&wl->tx_queue) >= WL12XX_TX_QUEUE_MAX_LENGTH) {
318 ieee80211_stop_queues(wl->hw);
319
320 /*
321 * FIXME: this is racy, the variable is not properly
322 * protected. Maybe fix this by removing the stupid
323 * variable altogether and checking the real queue state?
324 */
325 wl->tx_queue_stopped = true;
326 }
327
328 return NETDEV_TX_OK;
329 }
330
331 static int wl12xx_op_start(struct ieee80211_hw *hw)
332 {
333 struct wl12xx *wl = hw->priv;
334 int ret = 0;
335
336 wl12xx_debug(DEBUG_MAC80211, "mac80211 start");
337
338 mutex_lock(&wl->mutex);
339
340 if (wl->state != WL12XX_STATE_OFF) {
341 wl12xx_error("cannot start because not in off state: %d",
342 wl->state);
343 ret = -EBUSY;
344 goto out;
345 }
346
347 ret = wl12xx_chip_wakeup(wl);
348 if (ret < 0)
349 return ret;
350
351 ret = wl->chip.op_boot(wl);
352 if (ret < 0)
353 goto out;
354
355 ret = wl->chip.op_hw_init(wl);
356 if (ret < 0)
357 goto out;
358
359 ret = wl12xx_acx_station_id(wl);
360 if (ret < 0)
361 goto out;
362
363 wl->state = WL12XX_STATE_ON;
364
365 wl12xx_info("firmware booted (%s)", wl->chip.fw_ver);
366
367 out:
368 if (ret < 0)
369 wl12xx_power_off(wl);
370
371 mutex_unlock(&wl->mutex);
372
373 return ret;
374 }
375
376 static void wl12xx_op_stop(struct ieee80211_hw *hw)
377 {
378 struct wl12xx *wl = hw->priv;
379
380 wl12xx_info("down");
381
382 wl12xx_debug(DEBUG_MAC80211, "mac80211 stop");
383
384 mutex_lock(&wl->mutex);
385
386 WARN_ON(wl->state != WL12XX_STATE_ON);
387
388 if (wl->scanning) {
389 mutex_unlock(&wl->mutex);
390 ieee80211_scan_completed(wl->hw, true);
391 mutex_lock(&wl->mutex);
392 wl->scanning = false;
393 }
394
395 wl->state = WL12XX_STATE_OFF;
396
397 wl12xx_disable_interrupts(wl);
398
399 mutex_unlock(&wl->mutex);
400
401 cancel_work_sync(&wl->irq_work);
402 cancel_work_sync(&wl->tx_work);
403 cancel_work_sync(&wl->filter_work);
404
405 mutex_lock(&wl->mutex);
406
407 /* let's notify MAC80211 about the remaining pending TX frames */
408 wl->chip.op_tx_flush(wl);
409 wl12xx_power_off(wl);
410
411 memset(wl->bssid, 0, ETH_ALEN);
412 wl->listen_int = 1;
413 wl->bss_type = MAX_BSS_TYPE;
414
415 wl->data_in_count = 0;
416 wl->rx_counter = 0;
417 wl->rx_handled = 0;
418 wl->rx_current_buffer = 0;
419 wl->rx_last_id = 0;
420 wl->next_tx_complete = 0;
421 wl->elp = false;
422 wl->psm = 0;
423 wl->tx_queue_stopped = false;
424 wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
425
426 wl12xx_debugfs_reset(wl);
427
428 mutex_unlock(&wl->mutex);
429 }
430
431 static int wl12xx_op_add_interface(struct ieee80211_hw *hw,
432 struct ieee80211_if_init_conf *conf)
433 {
434 struct wl12xx *wl = hw->priv;
435 DECLARE_MAC_BUF(mac);
436 int ret = 0;
437
438 wl12xx_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
439 conf->type, print_mac(mac, conf->mac_addr));
440
441 mutex_lock(&wl->mutex);
442
443 switch (conf->type) {
444 case NL80211_IFTYPE_STATION:
445 wl->bss_type = BSS_TYPE_STA_BSS;
446 break;
447 case NL80211_IFTYPE_ADHOC:
448 wl->bss_type = BSS_TYPE_IBSS;
449 break;
450 default:
451 ret = -EOPNOTSUPP;
452 goto out;
453 }
454
455 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
456 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
457 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
458 ret = wl12xx_acx_station_id(wl);
459 if (ret < 0)
460 goto out;
461 }
462
463 out:
464 mutex_unlock(&wl->mutex);
465 return ret;
466 }
467
468 static void wl12xx_op_remove_interface(struct ieee80211_hw *hw,
469 struct ieee80211_if_init_conf *conf)
470 {
471 wl12xx_debug(DEBUG_MAC80211, "mac80211 remove interface");
472 }
473
474 static int wl12xx_build_null_data(struct wl12xx *wl)
475 {
476 struct wl12xx_null_data_template template;
477
478 if (!is_zero_ether_addr(wl->bssid)) {
479 memcpy(template.header.da, wl->bssid, ETH_ALEN);
480 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
481 } else {
482 memset(template.header.da, 0xff, ETH_ALEN);
483 memset(template.header.bssid, 0xff, ETH_ALEN);
484 }
485
486 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
487 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
488 IEEE80211_STYPE_NULLFUNC);
489
490 return wl12xx_cmd_template_set(wl, CMD_NULL_DATA, &template,
491 sizeof(template));
492
493 }
494
495 static int wl12xx_build_ps_poll(struct wl12xx *wl, u16 aid)
496 {
497 struct wl12xx_ps_poll_template template;
498
499 memcpy(template.bssid, wl->bssid, ETH_ALEN);
500 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
501 template.aid = aid;
502 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
503
504 return wl12xx_cmd_template_set(wl, CMD_PS_POLL, &template,
505 sizeof(template));
506
507 }
508
509 static int wl12xx_op_config(struct ieee80211_hw *hw, u32 changed)
510 {
511 struct wl12xx *wl = hw->priv;
512 struct ieee80211_conf *conf = &hw->conf;
513 int channel, ret = 0;
514
515 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
516
517 wl12xx_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
518 channel,
519 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
520 conf->power_level);
521
522 mutex_lock(&wl->mutex);
523
524 ret = wl12xx_ps_elp_wakeup(wl);
525 if (ret < 0)
526 goto out;
527
528 if (channel != wl->channel) {
529 /* FIXME: use beacon interval provided by mac80211 */
530 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
531 if (ret < 0)
532 goto out_sleep;
533
534 wl->channel = channel;
535 }
536
537 ret = wl12xx_build_null_data(wl);
538 if (ret < 0)
539 goto out_sleep;
540
541 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
542 wl12xx_info("psm enabled");
543
544 wl->psm_requested = true;
545
546 /*
547 * We enter PSM only if we're already associated.
548 * If we're not, we'll enter it when joining an SSID,
549 * through the bss_info_changed() hook.
550 */
551 ret = wl12xx_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
552 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
553 wl->psm_requested) {
554 wl12xx_info("psm disabled");
555
556 wl->psm_requested = false;
557
558 if (wl->psm)
559 ret = wl12xx_ps_set_mode(wl, STATION_ACTIVE_MODE);
560 }
561
562 if (conf->power_level != wl->power_level) {
563 ret = wl12xx_acx_tx_power(wl, conf->power_level);
564 if (ret < 0)
565 goto out;
566
567 wl->power_level = conf->power_level;
568 }
569
570 out_sleep:
571 wl12xx_ps_elp_sleep(wl);
572
573 out:
574 mutex_unlock(&wl->mutex);
575
576 return ret;
577 }
578
579 #define WL12XX_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
580 FIF_ALLMULTI | \
581 FIF_FCSFAIL | \
582 FIF_BCN_PRBRESP_PROMISC | \
583 FIF_CONTROL | \
584 FIF_OTHER_BSS)
585
586 static void wl12xx_op_configure_filter(struct ieee80211_hw *hw,
587 unsigned int changed,
588 unsigned int *total,
589 int mc_count,
590 struct dev_addr_list *mc_list)
591 {
592 struct wl12xx *wl = hw->priv;
593
594 wl12xx_debug(DEBUG_MAC80211, "mac80211 configure filter");
595
596 *total &= WL12XX_SUPPORTED_FILTERS;
597 changed &= WL12XX_SUPPORTED_FILTERS;
598
599 if (changed == 0)
600 /* no filters which we support changed */
601 return;
602
603 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
604
605 wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
606 wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
607
608 if (*total & FIF_PROMISC_IN_BSS) {
609 wl->rx_config |= CFG_BSSID_FILTER_EN;
610 wl->rx_config |= CFG_RX_ALL_GOOD;
611 }
612 if (*total & FIF_ALLMULTI)
613 /*
614 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
615 * all multicast frames
616 */
617 wl->rx_config &= ~CFG_MC_FILTER_EN;
618 if (*total & FIF_FCSFAIL)
619 wl->rx_filter |= CFG_RX_FCS_ERROR;
620 if (*total & FIF_BCN_PRBRESP_PROMISC) {
621 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
622 wl->rx_config &= ~CFG_SSID_FILTER_EN;
623 }
624 if (*total & FIF_CONTROL)
625 wl->rx_filter |= CFG_RX_CTL_EN;
626 if (*total & FIF_OTHER_BSS)
627 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
628
629 /*
630 * FIXME: workqueues need to be properly cancelled on stop(), for
631 * now let's just disable changing the filter settings. They will
632 * be updated any on config().
633 */
634 /* schedule_work(&wl->filter_work); */
635 }
636
637 /* HW encryption */
638 static int wl12xx_set_key_type(struct wl12xx *wl,
639 struct wl12xx_cmd_set_keys *key,
640 enum set_key_cmd cmd,
641 struct ieee80211_key_conf *mac80211_key,
642 const u8 *addr)
643 {
644 switch (mac80211_key->alg) {
645 case ALG_WEP:
646 if (is_broadcast_ether_addr(addr))
647 key->key_type = KEY_WEP_DEFAULT;
648 else
649 key->key_type = KEY_WEP_ADDR;
650
651 mac80211_key->hw_key_idx = mac80211_key->keyidx;
652 break;
653 case ALG_TKIP:
654 if (is_broadcast_ether_addr(addr))
655 key->key_type = KEY_TKIP_MIC_GROUP;
656 else
657 key->key_type = KEY_TKIP_MIC_PAIRWISE;
658
659 mac80211_key->hw_key_idx = mac80211_key->keyidx;
660 break;
661 case ALG_CCMP:
662 if (is_broadcast_ether_addr(addr))
663 key->key_type = KEY_AES_GROUP;
664 else
665 key->key_type = KEY_AES_PAIRWISE;
666 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
667 break;
668 default:
669 wl12xx_error("Unknown key algo 0x%x", mac80211_key->alg);
670 return -EOPNOTSUPP;
671 }
672
673 return 0;
674 }
675
676 static int wl12xx_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
677 struct ieee80211_vif *vif,
678 struct ieee80211_sta *sta,
679 struct ieee80211_key_conf *key)
680 {
681 struct wl12xx *wl = hw->priv;
682 struct wl12xx_cmd_set_keys *wl_cmd;
683 const u8 *addr;
684 int ret;
685
686 static const u8 bcast_addr[ETH_ALEN] =
687 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
688
689 wl12xx_debug(DEBUG_MAC80211, "mac80211 set key");
690
691 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
692 if (!wl_cmd) {
693 ret = -ENOMEM;
694 goto out;
695 }
696
697 addr = sta ? sta->addr : bcast_addr;
698
699 wl12xx_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
700 wl12xx_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
701 wl12xx_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
702 key->alg, key->keyidx, key->keylen, key->flags);
703 wl12xx_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
704
705 if (is_zero_ether_addr(addr)) {
706 /* We dont support TX only encryption */
707 ret = -EOPNOTSUPP;
708 goto out;
709 }
710
711 mutex_lock(&wl->mutex);
712
713 ret = wl12xx_ps_elp_wakeup(wl);
714 if (ret < 0)
715 goto out_unlock;
716
717 switch (cmd) {
718 case SET_KEY:
719 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
720 break;
721 case DISABLE_KEY:
722 wl_cmd->key_action = KEY_REMOVE;
723 break;
724 default:
725 wl12xx_error("Unsupported key cmd 0x%x", cmd);
726 break;
727 }
728
729 ret = wl12xx_set_key_type(wl, wl_cmd, cmd, key, addr);
730 if (ret < 0) {
731 wl12xx_error("Set KEY type failed");
732 goto out_sleep;
733 }
734
735 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
736 memcpy(wl_cmd->addr, addr, ETH_ALEN);
737
738 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
739 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
740 /*
741 * We get the key in the following form:
742 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
743 * but the target is expecting:
744 * TKIP - RX MIC - TX MIC
745 */
746 memcpy(wl_cmd->key, key->key, 16);
747 memcpy(wl_cmd->key + 16, key->key + 24, 8);
748 memcpy(wl_cmd->key + 24, key->key + 16, 8);
749
750 } else {
751 memcpy(wl_cmd->key, key->key, key->keylen);
752 }
753 wl_cmd->key_size = key->keylen;
754
755 wl_cmd->id = key->keyidx;
756 wl_cmd->ssid_profile = 0;
757
758 wl12xx_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
759
760 ret = wl12xx_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
761 if (ret < 0) {
762 wl12xx_warning("could not set keys");
763 goto out_sleep;
764 }
765
766 out_sleep:
767 wl12xx_ps_elp_sleep(wl);
768
769 out_unlock:
770 mutex_unlock(&wl->mutex);
771
772 out:
773 kfree(wl_cmd);
774
775 return ret;
776 }
777
778 static int wl12xx_build_basic_rates(char *rates)
779 {
780 u8 index = 0;
781
782 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
783 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
784 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
785 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
786
787 return index;
788 }
789
790 static int wl12xx_build_extended_rates(char *rates)
791 {
792 u8 index = 0;
793
794 rates[index++] = IEEE80211_OFDM_RATE_6MB;
795 rates[index++] = IEEE80211_OFDM_RATE_9MB;
796 rates[index++] = IEEE80211_OFDM_RATE_12MB;
797 rates[index++] = IEEE80211_OFDM_RATE_18MB;
798 rates[index++] = IEEE80211_OFDM_RATE_24MB;
799 rates[index++] = IEEE80211_OFDM_RATE_36MB;
800 rates[index++] = IEEE80211_OFDM_RATE_48MB;
801 rates[index++] = IEEE80211_OFDM_RATE_54MB;
802
803 return index;
804 }
805
806
807 static int wl12xx_build_probe_req(struct wl12xx *wl, u8 *ssid, size_t ssid_len)
808 {
809 struct wl12xx_probe_req_template template;
810 struct wl12xx_ie_rates *rates;
811 char *ptr;
812 u16 size;
813
814 ptr = (char *)&template;
815 size = sizeof(struct ieee80211_header);
816
817 memset(template.header.da, 0xff, ETH_ALEN);
818 memset(template.header.bssid, 0xff, ETH_ALEN);
819 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
820 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
821
822 /* IEs */
823 /* SSID */
824 template.ssid.header.id = WLAN_EID_SSID;
825 template.ssid.header.len = ssid_len;
826 if (ssid_len && ssid)
827 memcpy(template.ssid.ssid, ssid, ssid_len);
828 size += sizeof(struct wl12xx_ie_header) + ssid_len;
829 ptr += size;
830
831 /* Basic Rates */
832 rates = (struct wl12xx_ie_rates *)ptr;
833 rates->header.id = WLAN_EID_SUPP_RATES;
834 rates->header.len = wl12xx_build_basic_rates(rates->rates);
835 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
836 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
837
838 /* Extended rates */
839 rates = (struct wl12xx_ie_rates *)ptr;
840 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
841 rates->header.len = wl12xx_build_extended_rates(rates->rates);
842 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
843
844 wl12xx_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
845
846 return wl12xx_cmd_template_set(wl, CMD_PROBE_REQ, &template,
847 size);
848 }
849
850 static int wl12xx_hw_scan(struct wl12xx *wl, u8 *ssid, size_t len,
851 u8 active_scan, u8 high_prio, u8 num_channels,
852 u8 probe_requests)
853 {
854 struct wl12xx_cmd_trigger_scan_to *trigger = NULL;
855 struct cmd_scan *params = NULL;
856 int i, ret;
857 u16 scan_options = 0;
858
859 if (wl->scanning)
860 return -EINVAL;
861
862 params = kzalloc(sizeof(*params), GFP_KERNEL);
863 if (!params)
864 return -ENOMEM;
865
866 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
867 params->params.rx_filter_options =
868 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
869
870 /* High priority scan */
871 if (!active_scan)
872 scan_options |= SCAN_PASSIVE;
873 if (high_prio)
874 scan_options |= SCAN_PRIORITY_HIGH;
875 params->params.scan_options = scan_options;
876
877 params->params.num_channels = num_channels;
878 params->params.num_probe_requests = probe_requests;
879 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
880 params->params.tid_trigger = 0;
881
882 for (i = 0; i < num_channels; i++) {
883 params->channels[i].min_duration = cpu_to_le32(30000);
884 params->channels[i].max_duration = cpu_to_le32(60000);
885 memset(&params->channels[i].bssid_lsb, 0xff, 4);
886 memset(&params->channels[i].bssid_msb, 0xff, 2);
887 params->channels[i].early_termination = 0;
888 params->channels[i].tx_power_att = 0;
889 params->channels[i].channel = i + 1;
890 memset(params->channels[i].pad, 0, 3);
891 }
892
893 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
894 memset(&params->channels[i], 0,
895 sizeof(struct basic_scan_channel_parameters));
896
897 if (len && ssid) {
898 params->params.ssid_len = len;
899 memcpy(params->params.ssid, ssid, len);
900 } else {
901 params->params.ssid_len = 0;
902 memset(params->params.ssid, 0, 32);
903 }
904
905 ret = wl12xx_build_probe_req(wl, ssid, len);
906 if (ret < 0) {
907 wl12xx_error("PROBE request template failed");
908 goto out;
909 }
910
911 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
912 if (!trigger)
913 goto out;
914
915 trigger->timeout = 0;
916
917 ret = wl12xx_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
918 sizeof(*trigger));
919 if (ret < 0) {
920 wl12xx_error("trigger scan to failed for hw scan");
921 goto out;
922 }
923
924 wl12xx_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
925
926 wl->scanning = true;
927
928 ret = wl12xx_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
929 if (ret < 0)
930 wl12xx_error("SCAN failed");
931
932 wl12xx_spi_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
933
934 if (params->header.status != CMD_STATUS_SUCCESS) {
935 wl12xx_error("TEST command answer error: %d",
936 params->header.status);
937 wl->scanning = false;
938 ret = -EIO;
939 goto out;
940 }
941
942 out:
943 kfree(params);
944 return ret;
945
946 }
947
948 static int wl12xx_op_hw_scan(struct ieee80211_hw *hw,
949 struct cfg80211_scan_request *req)
950 {
951 struct wl12xx *wl = hw->priv;
952 int ret;
953 u8 *ssid = NULL;
954 size_t ssid_len = 0;
955
956 wl12xx_debug(DEBUG_MAC80211, "mac80211 hw scan");
957
958 if (req->n_ssids) {
959 ssid = req->ssids[0].ssid;
960 ssid_len = req->ssids[0].ssid_len;
961 }
962
963 mutex_lock(&wl->mutex);
964
965 ret = wl12xx_ps_elp_wakeup(wl);
966 if (ret < 0)
967 goto out;
968
969 ret = wl12xx_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
970
971 wl12xx_ps_elp_sleep(wl);
972
973 out:
974 mutex_unlock(&wl->mutex);
975
976 return ret;
977 }
978
979 static int wl12xx_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
980 {
981 struct wl12xx *wl = hw->priv;
982 int ret;
983
984 mutex_lock(&wl->mutex);
985
986 ret = wl12xx_ps_elp_wakeup(wl);
987 if (ret < 0)
988 goto out;
989
990 ret = wl12xx_acx_rts_threshold(wl, (u16) value);
991 if (ret < 0)
992 wl12xx_warning("wl12xx_op_set_rts_threshold failed: %d", ret);
993
994 wl12xx_ps_elp_sleep(wl);
995
996 out:
997 mutex_unlock(&wl->mutex);
998
999 return ret;
1000 }
1001
1002 static void wl12xx_op_bss_info_changed(struct ieee80211_hw *hw,
1003 struct ieee80211_vif *vif,
1004 struct ieee80211_bss_conf *bss_conf,
1005 u32 changed)
1006 {
1007 enum wl12xx_cmd_ps_mode mode;
1008 struct wl12xx *wl = hw->priv;
1009 struct sk_buff *beacon;
1010 int ret;
1011
1012 wl12xx_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1013
1014 mutex_lock(&wl->mutex);
1015
1016 ret = wl12xx_ps_elp_wakeup(wl);
1017 if (ret < 0)
1018 goto out;
1019
1020 if (changed & BSS_CHANGED_ASSOC) {
1021 if (bss_conf->assoc) {
1022 wl->aid = bss_conf->aid;
1023
1024 ret = wl12xx_build_ps_poll(wl, wl->aid);
1025 if (ret < 0)
1026 goto out_sleep;
1027
1028 ret = wl12xx_acx_aid(wl, wl->aid);
1029 if (ret < 0)
1030 goto out_sleep;
1031
1032 /* If we want to go in PSM but we're not there yet */
1033 if (wl->psm_requested && !wl->psm) {
1034 mode = STATION_POWER_SAVE_MODE;
1035 ret = wl12xx_ps_set_mode(wl, mode);
1036 if (ret < 0)
1037 goto out_sleep;
1038 }
1039 }
1040 }
1041 if (changed & BSS_CHANGED_ERP_SLOT) {
1042 if (bss_conf->use_short_slot)
1043 ret = wl12xx_acx_slot(wl, SLOT_TIME_SHORT);
1044 else
1045 ret = wl12xx_acx_slot(wl, SLOT_TIME_LONG);
1046 if (ret < 0) {
1047 wl12xx_warning("Set slot time failed %d", ret);
1048 goto out_sleep;
1049 }
1050 }
1051
1052 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1053 if (bss_conf->use_short_preamble)
1054 wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1055 else
1056 wl12xx_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1057 }
1058
1059 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1060 if (bss_conf->use_cts_prot)
1061 ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1062 else
1063 ret = wl12xx_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1064 if (ret < 0) {
1065 wl12xx_warning("Set ctsprotect failed %d", ret);
1066 goto out_sleep;
1067 }
1068 }
1069
1070 if (changed & BSS_CHANGED_BSSID) {
1071 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1072
1073 ret = wl12xx_build_null_data(wl);
1074 if (ret < 0)
1075 goto out;
1076
1077 if (wl->bss_type != BSS_TYPE_IBSS) {
1078 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 5, 100, 1);
1079 if (ret < 0)
1080 goto out;
1081 }
1082 }
1083
1084 if (changed & BSS_CHANGED_BEACON) {
1085 beacon = ieee80211_beacon_get(hw, vif);
1086 ret = wl12xx_cmd_template_set(wl, CMD_BEACON, beacon->data,
1087 beacon->len);
1088
1089 if (ret < 0) {
1090 dev_kfree_skb(beacon);
1091 goto out;
1092 }
1093
1094 ret = wl12xx_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1095 beacon->len);
1096
1097 dev_kfree_skb(beacon);
1098
1099 if (ret < 0)
1100 goto out;
1101
1102 ret = wl->chip.op_cmd_join(wl, wl->bss_type, 1, 100, 0);
1103
1104 if (ret < 0)
1105 goto out;
1106 }
1107
1108 out_sleep:
1109 wl12xx_ps_elp_sleep(wl);
1110
1111 out:
1112 mutex_unlock(&wl->mutex);
1113 }
1114
1115
1116 /* can't be const, mac80211 writes to this */
1117 static struct ieee80211_rate wl12xx_rates[] = {
1118 { .bitrate = 10,
1119 .hw_value = 0x1,
1120 .hw_value_short = 0x1, },
1121 { .bitrate = 20,
1122 .hw_value = 0x2,
1123 .hw_value_short = 0x2,
1124 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1125 { .bitrate = 55,
1126 .hw_value = 0x4,
1127 .hw_value_short = 0x4,
1128 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1129 { .bitrate = 110,
1130 .hw_value = 0x20,
1131 .hw_value_short = 0x20,
1132 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1133 { .bitrate = 60,
1134 .hw_value = 0x8,
1135 .hw_value_short = 0x8, },
1136 { .bitrate = 90,
1137 .hw_value = 0x10,
1138 .hw_value_short = 0x10, },
1139 { .bitrate = 120,
1140 .hw_value = 0x40,
1141 .hw_value_short = 0x40, },
1142 { .bitrate = 180,
1143 .hw_value = 0x80,
1144 .hw_value_short = 0x80, },
1145 { .bitrate = 240,
1146 .hw_value = 0x200,
1147 .hw_value_short = 0x200, },
1148 { .bitrate = 360,
1149 .hw_value = 0x400,
1150 .hw_value_short = 0x400, },
1151 { .bitrate = 480,
1152 .hw_value = 0x800,
1153 .hw_value_short = 0x800, },
1154 { .bitrate = 540,
1155 .hw_value = 0x1000,
1156 .hw_value_short = 0x1000, },
1157 };
1158
1159 /* can't be const, mac80211 writes to this */
1160 static struct ieee80211_channel wl12xx_channels[] = {
1161 { .hw_value = 1, .center_freq = 2412},
1162 { .hw_value = 2, .center_freq = 2417},
1163 { .hw_value = 3, .center_freq = 2422},
1164 { .hw_value = 4, .center_freq = 2427},
1165 { .hw_value = 5, .center_freq = 2432},
1166 { .hw_value = 6, .center_freq = 2437},
1167 { .hw_value = 7, .center_freq = 2442},
1168 { .hw_value = 8, .center_freq = 2447},
1169 { .hw_value = 9, .center_freq = 2452},
1170 { .hw_value = 10, .center_freq = 2457},
1171 { .hw_value = 11, .center_freq = 2462},
1172 { .hw_value = 12, .center_freq = 2467},
1173 { .hw_value = 13, .center_freq = 2472},
1174 };
1175
1176 /* can't be const, mac80211 writes to this */
1177 static struct ieee80211_supported_band wl12xx_band_2ghz = {
1178 .channels = wl12xx_channels,
1179 .n_channels = ARRAY_SIZE(wl12xx_channels),
1180 .bitrates = wl12xx_rates,
1181 .n_bitrates = ARRAY_SIZE(wl12xx_rates),
1182 };
1183
1184 static const struct ieee80211_ops wl12xx_ops = {
1185 .start = wl12xx_op_start,
1186 .stop = wl12xx_op_stop,
1187 .add_interface = wl12xx_op_add_interface,
1188 .remove_interface = wl12xx_op_remove_interface,
1189 .config = wl12xx_op_config,
1190 .configure_filter = wl12xx_op_configure_filter,
1191 .tx = wl12xx_op_tx,
1192 .set_key = wl12xx_op_set_key,
1193 .hw_scan = wl12xx_op_hw_scan,
1194 .bss_info_changed = wl12xx_op_bss_info_changed,
1195 .set_rts_threshold = wl12xx_op_set_rts_threshold,
1196 };
1197
1198 static int wl12xx_register_hw(struct wl12xx *wl)
1199 {
1200 int ret;
1201
1202 if (wl->mac80211_registered)
1203 return 0;
1204
1205 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1206
1207 ret = ieee80211_register_hw(wl->hw);
1208 if (ret < 0) {
1209 wl12xx_error("unable to register mac80211 hw: %d", ret);
1210 return ret;
1211 }
1212
1213 wl->mac80211_registered = true;
1214
1215 wl12xx_notice("loaded");
1216
1217 return 0;
1218 }
1219
1220 static int wl12xx_init_ieee80211(struct wl12xx *wl)
1221 {
1222 /* The tx descriptor buffer and the TKIP space */
1223 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1224 + WL1251_TKIP_IV_SPACE;
1225
1226 /* unit us */
1227 /* FIXME: find a proper value */
1228 wl->hw->channel_change_time = 10000;
1229
1230 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1231 IEEE80211_HW_NOISE_DBM;
1232
1233 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1234 wl->hw->wiphy->max_scan_ssids = 1;
1235 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl12xx_band_2ghz;
1236
1237 SET_IEEE80211_DEV(wl->hw, &wl->spi->dev);
1238
1239 return 0;
1240 }
1241
1242 #define WL12XX_DEFAULT_CHANNEL 1
1243 static int __devinit wl12xx_probe(struct spi_device *spi)
1244 {
1245 struct wl12xx_platform_data *pdata;
1246 struct ieee80211_hw *hw;
1247 struct wl12xx *wl;
1248 int ret, i;
1249 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1250
1251 pdata = spi->dev.platform_data;
1252 if (!pdata) {
1253 wl12xx_error("no platform data");
1254 return -ENODEV;
1255 }
1256
1257 hw = ieee80211_alloc_hw(sizeof(*wl), &wl12xx_ops);
1258 if (!hw) {
1259 wl12xx_error("could not alloc ieee80211_hw");
1260 return -ENOMEM;
1261 }
1262
1263 wl = hw->priv;
1264 memset(wl, 0, sizeof(*wl));
1265
1266 wl->hw = hw;
1267 dev_set_drvdata(&spi->dev, wl);
1268 wl->spi = spi;
1269
1270 wl->data_in_count = 0;
1271
1272 skb_queue_head_init(&wl->tx_queue);
1273
1274 INIT_WORK(&wl->filter_work, wl12xx_filter_work);
1275 wl->channel = WL12XX_DEFAULT_CHANNEL;
1276 wl->scanning = false;
1277 wl->default_key = 0;
1278 wl->listen_int = 1;
1279 wl->rx_counter = 0;
1280 wl->rx_handled = 0;
1281 wl->rx_current_buffer = 0;
1282 wl->rx_last_id = 0;
1283 wl->rx_config = WL12XX_DEFAULT_RX_CONFIG;
1284 wl->rx_filter = WL12XX_DEFAULT_RX_FILTER;
1285 wl->elp = false;
1286 wl->psm = 0;
1287 wl->psm_requested = false;
1288 wl->tx_queue_stopped = false;
1289 wl->power_level = WL12XX_DEFAULT_POWER_LEVEL;
1290
1291 /* We use the default power on sleep time until we know which chip
1292 * we're using */
1293 wl->chip.power_on_sleep = WL12XX_DEFAULT_POWER_ON_SLEEP;
1294
1295 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1296 wl->tx_frames[i] = NULL;
1297
1298 wl->next_tx_complete = 0;
1299
1300 /*
1301 * In case our MAC address is not correctly set,
1302 * we use a random but Nokia MAC.
1303 */
1304 memcpy(wl->mac_addr, nokia_oui, 3);
1305 get_random_bytes(wl->mac_addr + 3, 3);
1306
1307 wl->state = WL12XX_STATE_OFF;
1308 mutex_init(&wl->mutex);
1309
1310 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1311 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1312
1313 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1314 if (!wl->rx_descriptor) {
1315 wl12xx_error("could not allocate memory for rx descriptor");
1316 ret = -ENOMEM;
1317 goto out_free;
1318 }
1319
1320 /* This is the only SPI value that we need to set here, the rest
1321 * comes from the board-peripherals file */
1322 spi->bits_per_word = 32;
1323
1324 ret = spi_setup(spi);
1325 if (ret < 0) {
1326 wl12xx_error("spi_setup failed");
1327 goto out_free;
1328 }
1329
1330 wl->set_power = pdata->set_power;
1331 if (!wl->set_power) {
1332 wl12xx_error("set power function missing in platform data");
1333 ret = -ENODEV;
1334 goto out_free;
1335 }
1336
1337 wl->irq = spi->irq;
1338 if (wl->irq < 0) {
1339 wl12xx_error("irq missing in platform data");
1340 ret = -ENODEV;
1341 goto out_free;
1342 }
1343
1344 ret = request_irq(wl->irq, wl12xx_irq, 0, DRIVER_NAME, wl);
1345 if (ret < 0) {
1346 wl12xx_error("request_irq() failed: %d", ret);
1347 goto out_free;
1348 }
1349
1350 set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
1351
1352 disable_irq(wl->irq);
1353
1354 ret = wl12xx_init_ieee80211(wl);
1355 if (ret)
1356 goto out_irq;
1357
1358 ret = wl12xx_register_hw(wl);
1359 if (ret)
1360 goto out_irq;
1361
1362 wl12xx_debugfs_init(wl);
1363
1364 wl12xx_notice("initialized");
1365
1366 return 0;
1367
1368 out_irq:
1369 free_irq(wl->irq, wl);
1370
1371 out_free:
1372 kfree(wl->rx_descriptor);
1373 wl->rx_descriptor = NULL;
1374
1375 ieee80211_free_hw(hw);
1376
1377 return ret;
1378 }
1379
1380 static int __devexit wl12xx_remove(struct spi_device *spi)
1381 {
1382 struct wl12xx *wl = dev_get_drvdata(&spi->dev);
1383
1384 ieee80211_unregister_hw(wl->hw);
1385
1386 wl12xx_debugfs_exit(wl);
1387
1388 free_irq(wl->irq, wl);
1389 kfree(wl->target_mem_map);
1390 kfree(wl->data_path);
1391 kfree(wl->fw);
1392 wl->fw = NULL;
1393 kfree(wl->nvs);
1394 wl->nvs = NULL;
1395
1396 kfree(wl->rx_descriptor);
1397 wl->rx_descriptor = NULL;
1398
1399 ieee80211_free_hw(wl->hw);
1400
1401 return 0;
1402 }
1403
1404
1405 static struct spi_driver wl12xx_spi_driver = {
1406 .driver = {
1407 .name = "wl12xx",
1408 .bus = &spi_bus_type,
1409 .owner = THIS_MODULE,
1410 },
1411
1412 .probe = wl12xx_probe,
1413 .remove = __devexit_p(wl12xx_remove),
1414 };
1415
1416 static int __init wl12xx_init(void)
1417 {
1418 int ret;
1419
1420 ret = spi_register_driver(&wl12xx_spi_driver);
1421 if (ret < 0) {
1422 wl12xx_error("failed to register spi driver: %d", ret);
1423 goto out;
1424 }
1425
1426 out:
1427 return ret;
1428 }
1429
1430 static void __exit wl12xx_exit(void)
1431 {
1432 spi_unregister_driver(&wl12xx_spi_driver);
1433
1434 wl12xx_notice("unloaded");
1435 }
1436
1437 module_init(wl12xx_init);
1438 module_exit(wl12xx_exit);
1439
1440 MODULE_LICENSE("GPL");
1441 MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>, "
1442 "Luciano Coelho <luciano.coelho@nokia.com>");
(deprecated) Btrfs devel tree