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wl1251: Enable beacon filtering with the stack
[firewire-audio.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blob601c430702965ae5fbb9344753e8c3930161f0f9
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 "wl1251_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_PG11:
187 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
188 wl->chip_id);
189 break;
190 case CHIP_ID_1251_PG10:
191 default:
192 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
193 ret = -ENODEV;
194 goto out;
195 }
196
197 if (wl->fw == NULL) {
198 ret = wl1251_fetch_firmware(wl);
199 if (ret < 0)
200 goto out;
201 }
202
203 /* No NVS from netlink, try to get it from the filesystem */
204 if (wl->nvs == NULL) {
205 ret = wl1251_fetch_nvs(wl);
206 if (ret < 0)
207 goto out;
208 }
209
210 out:
211 return ret;
212 }
213
214 static void wl1251_irq_work(struct work_struct *work)
215 {
216 u32 intr;
217 struct wl1251 *wl =
218 container_of(work, struct wl1251, irq_work);
219 int ret;
220
221 mutex_lock(&wl->mutex);
222
223 wl1251_debug(DEBUG_IRQ, "IRQ work");
224
225 if (wl->state == WL1251_STATE_OFF)
226 goto out;
227
228 ret = wl1251_ps_elp_wakeup(wl);
229 if (ret < 0)
230 goto out;
231
232 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
233
234 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
235 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
236
237 if (wl->data_path) {
238 wl->rx_counter =
239 wl1251_mem_read32(wl, wl->data_path->rx_control_addr);
240
241 /* We handle a frmware bug here */
242 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
243 case 0:
244 wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync");
245 intr &= ~WL1251_ACX_INTR_RX0_DATA;
246 intr &= ~WL1251_ACX_INTR_RX1_DATA;
247 break;
248 case 1:
249 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
250 intr |= WL1251_ACX_INTR_RX0_DATA;
251 intr &= ~WL1251_ACX_INTR_RX1_DATA;
252 break;
253 case 2:
254 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
255 intr |= WL1251_ACX_INTR_RX0_DATA;
256 intr |= WL1251_ACX_INTR_RX1_DATA;
257 break;
258 default:
259 wl1251_warning("RX: FW and host out of sync: %d",
260 wl->rx_counter - wl->rx_handled);
261 break;
262 }
263
264 wl->rx_handled = wl->rx_counter;
265
266
267 wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter);
268 }
269
270 intr &= wl->intr_mask;
271
272 if (intr == 0) {
273 wl1251_debug(DEBUG_IRQ, "INTR is 0");
274 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
275 ~(wl->intr_mask));
276
277 goto out_sleep;
278 }
279
280 if (intr & WL1251_ACX_INTR_RX0_DATA) {
281 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
282 wl1251_rx(wl);
283 }
284
285 if (intr & WL1251_ACX_INTR_RX1_DATA) {
286 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
287 wl1251_rx(wl);
288 }
289
290 if (intr & WL1251_ACX_INTR_TX_RESULT) {
291 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
292 wl1251_tx_complete(wl);
293 }
294
295 if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) {
296 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr);
297 if (intr & WL1251_ACX_INTR_EVENT_A)
298 wl1251_event_handle(wl, 0);
299 else
300 wl1251_event_handle(wl, 1);
301 }
302
303 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE");
305
306 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
307
308 out_sleep:
309 wl1251_ps_elp_sleep(wl);
310
311 out:
312 mutex_unlock(&wl->mutex);
313 }
314
315 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
316 u16 beacon_interval, u8 dtim_period)
317 {
318 int ret;
319
320 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
321 DEFAULT_HW_GEN_MODULATION_TYPE,
322 wl->tx_mgmt_frm_rate,
323 wl->tx_mgmt_frm_mod);
324 if (ret < 0)
325 goto out;
326
327
328 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
329 dtim_period);
330 if (ret < 0)
331 goto out;
332
333 /*
334 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
335 * locking we just sleep instead, for now
336 */
337 msleep(10);
338
339 out:
340 return ret;
341 }
342
343 static void wl1251_filter_work(struct work_struct *work)
344 {
345 struct wl1251 *wl =
346 container_of(work, struct wl1251, filter_work);
347 int ret;
348
349 mutex_lock(&wl->mutex);
350
351 if (wl->state == WL1251_STATE_OFF)
352 goto out;
353
354 ret = wl1251_ps_elp_wakeup(wl);
355 if (ret < 0)
356 goto out;
357
358 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
359 wl->dtim_period);
360 if (ret < 0)
361 goto out_sleep;
362
363 out_sleep:
364 wl1251_ps_elp_sleep(wl);
365
366 out:
367 mutex_unlock(&wl->mutex);
368 }
369
370 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
371 {
372 struct wl1251 *wl = hw->priv;
373
374 skb_queue_tail(&wl->tx_queue, skb);
375
376 /*
377 * The chip specific setup must run before the first TX packet -
378 * before that, the tx_work will not be initialized!
379 */
380
381 ieee80211_queue_work(wl->hw, &wl->tx_work);
382
383 /*
384 * The workqueue is slow to process the tx_queue and we need stop
385 * the queue here, otherwise the queue will get too long.
386 */
387 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
388 ieee80211_stop_queues(wl->hw);
389
390 /*
391 * FIXME: this is racy, the variable is not properly
392 * protected. Maybe fix this by removing the stupid
393 * variable altogether and checking the real queue state?
394 */
395 wl->tx_queue_stopped = true;
396 }
397
398 return NETDEV_TX_OK;
399 }
400
401 static int wl1251_op_start(struct ieee80211_hw *hw)
402 {
403 struct wl1251 *wl = hw->priv;
404 int ret = 0;
405
406 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
407
408 mutex_lock(&wl->mutex);
409
410 if (wl->state != WL1251_STATE_OFF) {
411 wl1251_error("cannot start because not in off state: %d",
412 wl->state);
413 ret = -EBUSY;
414 goto out;
415 }
416
417 ret = wl1251_chip_wakeup(wl);
418 if (ret < 0)
419 goto out;
420
421 ret = wl1251_boot(wl);
422 if (ret < 0)
423 goto out;
424
425 ret = wl1251_hw_init(wl);
426 if (ret < 0)
427 goto out;
428
429 ret = wl1251_acx_station_id(wl);
430 if (ret < 0)
431 goto out;
432
433 wl->state = WL1251_STATE_ON;
434
435 wl1251_info("firmware booted (%s)", wl->fw_ver);
436
437 out:
438 if (ret < 0)
439 wl1251_power_off(wl);
440
441 mutex_unlock(&wl->mutex);
442
443 return ret;
444 }
445
446 static void wl1251_op_stop(struct ieee80211_hw *hw)
447 {
448 struct wl1251 *wl = hw->priv;
449
450 wl1251_info("down");
451
452 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
453
454 mutex_lock(&wl->mutex);
455
456 WARN_ON(wl->state != WL1251_STATE_ON);
457
458 if (wl->scanning) {
459 mutex_unlock(&wl->mutex);
460 ieee80211_scan_completed(wl->hw, true);
461 mutex_lock(&wl->mutex);
462 wl->scanning = false;
463 }
464
465 wl->state = WL1251_STATE_OFF;
466
467 wl1251_disable_interrupts(wl);
468
469 mutex_unlock(&wl->mutex);
470
471 cancel_work_sync(&wl->irq_work);
472 cancel_work_sync(&wl->tx_work);
473 cancel_work_sync(&wl->filter_work);
474
475 mutex_lock(&wl->mutex);
476
477 /* let's notify MAC80211 about the remaining pending TX frames */
478 wl1251_tx_flush(wl);
479 wl1251_power_off(wl);
480
481 memset(wl->bssid, 0, ETH_ALEN);
482 wl->listen_int = 1;
483 wl->bss_type = MAX_BSS_TYPE;
484
485 wl->data_in_count = 0;
486 wl->rx_counter = 0;
487 wl->rx_handled = 0;
488 wl->rx_current_buffer = 0;
489 wl->rx_last_id = 0;
490 wl->next_tx_complete = 0;
491 wl->elp = false;
492 wl->psm = 0;
493 wl->tx_queue_stopped = false;
494 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
495 wl->channel = WL1251_DEFAULT_CHANNEL;
496
497 wl1251_debugfs_reset(wl);
498
499 mutex_unlock(&wl->mutex);
500 }
501
502 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
503 struct ieee80211_if_init_conf *conf)
504 {
505 struct wl1251 *wl = hw->priv;
506 int ret = 0;
507
508 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
509 conf->type, conf->mac_addr);
510
511 mutex_lock(&wl->mutex);
512 if (wl->vif) {
513 ret = -EBUSY;
514 goto out;
515 }
516
517 wl->vif = conf->vif;
518
519 switch (conf->type) {
520 case NL80211_IFTYPE_STATION:
521 wl->bss_type = BSS_TYPE_STA_BSS;
522 break;
523 case NL80211_IFTYPE_ADHOC:
524 wl->bss_type = BSS_TYPE_IBSS;
525 break;
526 default:
527 ret = -EOPNOTSUPP;
528 goto out;
529 }
530
531 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
532 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
533 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
534 ret = wl1251_acx_station_id(wl);
535 if (ret < 0)
536 goto out;
537 }
538
539 out:
540 mutex_unlock(&wl->mutex);
541 return ret;
542 }
543
544 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
545 struct ieee80211_if_init_conf *conf)
546 {
547 struct wl1251 *wl = hw->priv;
548
549 mutex_lock(&wl->mutex);
550 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
551 wl->vif = NULL;
552 mutex_unlock(&wl->mutex);
553 }
554
555 static int wl1251_build_null_data(struct wl1251 *wl)
556 {
557 struct wl12xx_null_data_template template;
558
559 if (!is_zero_ether_addr(wl->bssid)) {
560 memcpy(template.header.da, wl->bssid, ETH_ALEN);
561 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
562 } else {
563 memset(template.header.da, 0xff, ETH_ALEN);
564 memset(template.header.bssid, 0xff, ETH_ALEN);
565 }
566
567 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
568 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
569 IEEE80211_STYPE_NULLFUNC);
570
571 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
572 sizeof(template));
573
574 }
575
576 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
577 {
578 struct wl12xx_ps_poll_template template;
579
580 memcpy(template.bssid, wl->bssid, ETH_ALEN);
581 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
582 template.aid = aid;
583 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
584
585 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
586 sizeof(template));
587
588 }
589
590 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
591 {
592 struct wl1251 *wl = hw->priv;
593 struct ieee80211_conf *conf = &hw->conf;
594 int channel, ret = 0;
595
596 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
597
598 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
599 channel,
600 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
601 conf->power_level);
602
603 mutex_lock(&wl->mutex);
604
605 ret = wl1251_ps_elp_wakeup(wl);
606 if (ret < 0)
607 goto out;
608
609 if (channel != wl->channel) {
610 wl->channel = channel;
611
612 ret = wl1251_join(wl, wl->bss_type, wl->channel,
613 wl->beacon_int, wl->dtim_period);
614 if (ret < 0)
615 goto out_sleep;
616 }
617
618 ret = wl1251_build_null_data(wl);
619 if (ret < 0)
620 goto out_sleep;
621
622 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
623 wl1251_debug(DEBUG_PSM, "psm enabled");
624
625 wl->psm_requested = true;
626
627 /*
628 * We enter PSM only if we're already associated.
629 * If we're not, we'll enter it when joining an SSID,
630 * through the bss_info_changed() hook.
631 */
632 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
633 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
634 wl->psm_requested) {
635 wl1251_debug(DEBUG_PSM, "psm disabled");
636
637 wl->psm_requested = false;
638
639 if (wl->psm)
640 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
641 }
642
643 if (conf->power_level != wl->power_level) {
644 ret = wl1251_acx_tx_power(wl, conf->power_level);
645 if (ret < 0)
646 goto out;
647
648 wl->power_level = conf->power_level;
649 }
650
651 out_sleep:
652 wl1251_ps_elp_sleep(wl);
653
654 out:
655 mutex_unlock(&wl->mutex);
656
657 return ret;
658 }
659
660 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
661 FIF_ALLMULTI | \
662 FIF_FCSFAIL | \
663 FIF_BCN_PRBRESP_PROMISC | \
664 FIF_CONTROL | \
665 FIF_OTHER_BSS)
666
667 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
668 unsigned int changed,
669 unsigned int *total,u64 multicast)
670 {
671 struct wl1251 *wl = hw->priv;
672
673 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
674
675 *total &= WL1251_SUPPORTED_FILTERS;
676 changed &= WL1251_SUPPORTED_FILTERS;
677
678 if (changed == 0)
679 /* no filters which we support changed */
680 return;
681
682 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
683
684 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
685 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
686
687 if (*total & FIF_PROMISC_IN_BSS) {
688 wl->rx_config |= CFG_BSSID_FILTER_EN;
689 wl->rx_config |= CFG_RX_ALL_GOOD;
690 }
691 if (*total & FIF_ALLMULTI)
692 /*
693 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
694 * all multicast frames
695 */
696 wl->rx_config &= ~CFG_MC_FILTER_EN;
697 if (*total & FIF_FCSFAIL)
698 wl->rx_filter |= CFG_RX_FCS_ERROR;
699 if (*total & FIF_BCN_PRBRESP_PROMISC) {
700 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
701 wl->rx_config &= ~CFG_SSID_FILTER_EN;
702 }
703 if (*total & FIF_CONTROL)
704 wl->rx_filter |= CFG_RX_CTL_EN;
705 if (*total & FIF_OTHER_BSS)
706 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
707
708 /*
709 * FIXME: workqueues need to be properly cancelled on stop(), for
710 * now let's just disable changing the filter settings. They will
711 * be updated any on config().
712 */
713 /* schedule_work(&wl->filter_work); */
714 }
715
716 /* HW encryption */
717 static int wl1251_set_key_type(struct wl1251 *wl,
718 struct wl1251_cmd_set_keys *key,
719 enum set_key_cmd cmd,
720 struct ieee80211_key_conf *mac80211_key,
721 const u8 *addr)
722 {
723 switch (mac80211_key->alg) {
724 case ALG_WEP:
725 if (is_broadcast_ether_addr(addr))
726 key->key_type = KEY_WEP_DEFAULT;
727 else
728 key->key_type = KEY_WEP_ADDR;
729
730 mac80211_key->hw_key_idx = mac80211_key->keyidx;
731 break;
732 case ALG_TKIP:
733 if (is_broadcast_ether_addr(addr))
734 key->key_type = KEY_TKIP_MIC_GROUP;
735 else
736 key->key_type = KEY_TKIP_MIC_PAIRWISE;
737
738 mac80211_key->hw_key_idx = mac80211_key->keyidx;
739 break;
740 case ALG_CCMP:
741 if (is_broadcast_ether_addr(addr))
742 key->key_type = KEY_AES_GROUP;
743 else
744 key->key_type = KEY_AES_PAIRWISE;
745 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
746 break;
747 default:
748 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
749 return -EOPNOTSUPP;
750 }
751
752 return 0;
753 }
754
755 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
756 struct ieee80211_vif *vif,
757 struct ieee80211_sta *sta,
758 struct ieee80211_key_conf *key)
759 {
760 struct wl1251 *wl = hw->priv;
761 struct wl1251_cmd_set_keys *wl_cmd;
762 const u8 *addr;
763 int ret;
764
765 static const u8 bcast_addr[ETH_ALEN] =
766 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
767
768 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
769
770 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
771 if (!wl_cmd) {
772 ret = -ENOMEM;
773 goto out;
774 }
775
776 addr = sta ? sta->addr : bcast_addr;
777
778 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
779 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
780 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
781 key->alg, key->keyidx, key->keylen, key->flags);
782 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
783
784 if (is_zero_ether_addr(addr)) {
785 /* We dont support TX only encryption */
786 ret = -EOPNOTSUPP;
787 goto out;
788 }
789
790 mutex_lock(&wl->mutex);
791
792 ret = wl1251_ps_elp_wakeup(wl);
793 if (ret < 0)
794 goto out_unlock;
795
796 switch (cmd) {
797 case SET_KEY:
798 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
799 break;
800 case DISABLE_KEY:
801 wl_cmd->key_action = KEY_REMOVE;
802 break;
803 default:
804 wl1251_error("Unsupported key cmd 0x%x", cmd);
805 break;
806 }
807
808 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
809 if (ret < 0) {
810 wl1251_error("Set KEY type failed");
811 goto out_sleep;
812 }
813
814 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
815 memcpy(wl_cmd->addr, addr, ETH_ALEN);
816
817 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
818 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
819 /*
820 * We get the key in the following form:
821 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
822 * but the target is expecting:
823 * TKIP - RX MIC - TX MIC
824 */
825 memcpy(wl_cmd->key, key->key, 16);
826 memcpy(wl_cmd->key + 16, key->key + 24, 8);
827 memcpy(wl_cmd->key + 24, key->key + 16, 8);
828
829 } else {
830 memcpy(wl_cmd->key, key->key, key->keylen);
831 }
832 wl_cmd->key_size = key->keylen;
833
834 wl_cmd->id = key->keyidx;
835 wl_cmd->ssid_profile = 0;
836
837 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
838
839 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
840 if (ret < 0) {
841 wl1251_warning("could not set keys");
842 goto out_sleep;
843 }
844
845 out_sleep:
846 wl1251_ps_elp_sleep(wl);
847
848 out_unlock:
849 mutex_unlock(&wl->mutex);
850
851 out:
852 kfree(wl_cmd);
853
854 return ret;
855 }
856
857 static int wl1251_build_basic_rates(char *rates)
858 {
859 u8 index = 0;
860
861 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
862 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
863 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
864 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
865
866 return index;
867 }
868
869 static int wl1251_build_extended_rates(char *rates)
870 {
871 u8 index = 0;
872
873 rates[index++] = IEEE80211_OFDM_RATE_6MB;
874 rates[index++] = IEEE80211_OFDM_RATE_9MB;
875 rates[index++] = IEEE80211_OFDM_RATE_12MB;
876 rates[index++] = IEEE80211_OFDM_RATE_18MB;
877 rates[index++] = IEEE80211_OFDM_RATE_24MB;
878 rates[index++] = IEEE80211_OFDM_RATE_36MB;
879 rates[index++] = IEEE80211_OFDM_RATE_48MB;
880 rates[index++] = IEEE80211_OFDM_RATE_54MB;
881
882 return index;
883 }
884
885
886 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
887 {
888 struct wl12xx_probe_req_template template;
889 struct wl12xx_ie_rates *rates;
890 char *ptr;
891 u16 size;
892
893 ptr = (char *)&template;
894 size = sizeof(struct ieee80211_header);
895
896 memset(template.header.da, 0xff, ETH_ALEN);
897 memset(template.header.bssid, 0xff, ETH_ALEN);
898 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
899 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
900
901 /* IEs */
902 /* SSID */
903 template.ssid.header.id = WLAN_EID_SSID;
904 template.ssid.header.len = ssid_len;
905 if (ssid_len && ssid)
906 memcpy(template.ssid.ssid, ssid, ssid_len);
907 size += sizeof(struct wl12xx_ie_header) + ssid_len;
908 ptr += size;
909
910 /* Basic Rates */
911 rates = (struct wl12xx_ie_rates *)ptr;
912 rates->header.id = WLAN_EID_SUPP_RATES;
913 rates->header.len = wl1251_build_basic_rates(rates->rates);
914 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
915 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
916
917 /* Extended rates */
918 rates = (struct wl12xx_ie_rates *)ptr;
919 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
920 rates->header.len = wl1251_build_extended_rates(rates->rates);
921 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
922
923 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
924
925 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
926 size);
927 }
928
929 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
930 u8 active_scan, u8 high_prio, u8 num_channels,
931 u8 probe_requests)
932 {
933 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
934 struct cmd_scan *params = NULL;
935 int i, ret;
936 u16 scan_options = 0;
937
938 if (wl->scanning)
939 return -EINVAL;
940
941 params = kzalloc(sizeof(*params), GFP_KERNEL);
942 if (!params)
943 return -ENOMEM;
944
945 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
946 params->params.rx_filter_options =
947 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
948
949 /* High priority scan */
950 if (!active_scan)
951 scan_options |= SCAN_PASSIVE;
952 if (high_prio)
953 scan_options |= SCAN_PRIORITY_HIGH;
954 params->params.scan_options = scan_options;
955
956 params->params.num_channels = num_channels;
957 params->params.num_probe_requests = probe_requests;
958 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
959 params->params.tid_trigger = 0;
960
961 for (i = 0; i < num_channels; i++) {
962 params->channels[i].min_duration = cpu_to_le32(30000);
963 params->channels[i].max_duration = cpu_to_le32(60000);
964 memset(&params->channels[i].bssid_lsb, 0xff, 4);
965 memset(&params->channels[i].bssid_msb, 0xff, 2);
966 params->channels[i].early_termination = 0;
967 params->channels[i].tx_power_att = 0;
968 params->channels[i].channel = i + 1;
969 memset(params->channels[i].pad, 0, 3);
970 }
971
972 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
973 memset(&params->channels[i], 0,
974 sizeof(struct basic_scan_channel_parameters));
975
976 if (len && ssid) {
977 params->params.ssid_len = len;
978 memcpy(params->params.ssid, ssid, len);
979 } else {
980 params->params.ssid_len = 0;
981 memset(params->params.ssid, 0, 32);
982 }
983
984 ret = wl1251_build_probe_req(wl, ssid, len);
985 if (ret < 0) {
986 wl1251_error("PROBE request template failed");
987 goto out;
988 }
989
990 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
991 if (!trigger)
992 goto out;
993
994 trigger->timeout = 0;
995
996 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
997 sizeof(*trigger));
998 if (ret < 0) {
999 wl1251_error("trigger scan to failed for hw scan");
1000 goto out;
1001 }
1002
1003 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
1004
1005 wl->scanning = true;
1006
1007 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
1008 if (ret < 0)
1009 wl1251_error("SCAN failed");
1010
1011 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
1012
1013 if (params->header.status != CMD_STATUS_SUCCESS) {
1014 wl1251_error("TEST command answer error: %d",
1015 params->header.status);
1016 wl->scanning = false;
1017 ret = -EIO;
1018 goto out;
1019 }
1020
1021 out:
1022 kfree(params);
1023 return ret;
1024
1025 }
1026
1027 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1028 struct cfg80211_scan_request *req)
1029 {
1030 struct wl1251 *wl = hw->priv;
1031 int ret;
1032 u8 *ssid = NULL;
1033 size_t ssid_len = 0;
1034
1035 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1036
1037 if (req->n_ssids) {
1038 ssid = req->ssids[0].ssid;
1039 ssid_len = req->ssids[0].ssid_len;
1040 }
1041
1042 mutex_lock(&wl->mutex);
1043
1044 ret = wl1251_ps_elp_wakeup(wl);
1045 if (ret < 0)
1046 goto out;
1047
1048 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1049
1050 wl1251_ps_elp_sleep(wl);
1051
1052 out:
1053 mutex_unlock(&wl->mutex);
1054
1055 return ret;
1056 }
1057
1058 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1059 {
1060 struct wl1251 *wl = hw->priv;
1061 int ret;
1062
1063 mutex_lock(&wl->mutex);
1064
1065 ret = wl1251_ps_elp_wakeup(wl);
1066 if (ret < 0)
1067 goto out;
1068
1069 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1070 if (ret < 0)
1071 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1072
1073 wl1251_ps_elp_sleep(wl);
1074
1075 out:
1076 mutex_unlock(&wl->mutex);
1077
1078 return ret;
1079 }
1080
1081 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1082 struct ieee80211_vif *vif,
1083 struct ieee80211_bss_conf *bss_conf,
1084 u32 changed)
1085 {
1086 enum wl1251_cmd_ps_mode mode;
1087 struct wl1251 *wl = hw->priv;
1088 struct sk_buff *beacon;
1089 int ret;
1090
1091 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1092
1093 mutex_lock(&wl->mutex);
1094
1095 ret = wl1251_ps_elp_wakeup(wl);
1096 if (ret < 0)
1097 goto out;
1098
1099 if (changed & BSS_CHANGED_ASSOC) {
1100 if (bss_conf->assoc) {
1101 wl->beacon_int = bss_conf->beacon_int;
1102 wl->dtim_period = bss_conf->dtim_period;
1103
1104 /* FIXME: call join */
1105
1106 wl->aid = bss_conf->aid;
1107
1108 ret = wl1251_build_ps_poll(wl, wl->aid);
1109 if (ret < 0)
1110 goto out_sleep;
1111
1112 ret = wl1251_acx_aid(wl, wl->aid);
1113 if (ret < 0)
1114 goto out_sleep;
1115
1116 /* If we want to go in PSM but we're not there yet */
1117 if (wl->psm_requested && !wl->psm) {
1118 mode = STATION_POWER_SAVE_MODE;
1119 ret = wl1251_ps_set_mode(wl, mode);
1120 if (ret < 0)
1121 goto out_sleep;
1122 }
1123 } else {
1124 /* use defaults when not associated */
1125 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1126 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1127 }
1128 }
1129 if (changed & BSS_CHANGED_ERP_SLOT) {
1130 if (bss_conf->use_short_slot)
1131 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1132 else
1133 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1134 if (ret < 0) {
1135 wl1251_warning("Set slot time failed %d", ret);
1136 goto out_sleep;
1137 }
1138 }
1139
1140 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1141 if (bss_conf->use_short_preamble)
1142 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1143 else
1144 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1145 }
1146
1147 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1148 if (bss_conf->use_cts_prot)
1149 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1150 else
1151 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1152 if (ret < 0) {
1153 wl1251_warning("Set ctsprotect failed %d", ret);
1154 goto out;
1155 }
1156 }
1157
1158 if (changed & BSS_CHANGED_BSSID) {
1159 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1160
1161 ret = wl1251_build_null_data(wl);
1162 if (ret < 0)
1163 goto out;
1164
1165 if (wl->bss_type != BSS_TYPE_IBSS) {
1166 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1167 wl->beacon_int, wl->dtim_period);
1168 if (ret < 0)
1169 goto out_sleep;
1170 wl1251_warning("Set ctsprotect failed %d", ret);
1171 goto out_sleep;
1172 }
1173 }
1174
1175 if (changed & BSS_CHANGED_BEACON) {
1176 beacon = ieee80211_beacon_get(hw, vif);
1177 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1178 beacon->len);
1179
1180 if (ret < 0) {
1181 dev_kfree_skb(beacon);
1182 goto out;
1183 }
1184
1185 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1186 beacon->len);
1187
1188 dev_kfree_skb(beacon);
1189
1190 if (ret < 0)
1191 goto out;
1192
1193 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1194 wl->channel, wl->dtim_period);
1195
1196 if (ret < 0)
1197 goto out;
1198 }
1199
1200 out_sleep:
1201 wl1251_ps_elp_sleep(wl);
1202
1203 out:
1204 mutex_unlock(&wl->mutex);
1205 }
1206
1207
1208 /* can't be const, mac80211 writes to this */
1209 static struct ieee80211_rate wl1251_rates[] = {
1210 { .bitrate = 10,
1211 .hw_value = 0x1,
1212 .hw_value_short = 0x1, },
1213 { .bitrate = 20,
1214 .hw_value = 0x2,
1215 .hw_value_short = 0x2,
1216 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1217 { .bitrate = 55,
1218 .hw_value = 0x4,
1219 .hw_value_short = 0x4,
1220 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1221 { .bitrate = 110,
1222 .hw_value = 0x20,
1223 .hw_value_short = 0x20,
1224 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1225 { .bitrate = 60,
1226 .hw_value = 0x8,
1227 .hw_value_short = 0x8, },
1228 { .bitrate = 90,
1229 .hw_value = 0x10,
1230 .hw_value_short = 0x10, },
1231 { .bitrate = 120,
1232 .hw_value = 0x40,
1233 .hw_value_short = 0x40, },
1234 { .bitrate = 180,
1235 .hw_value = 0x80,
1236 .hw_value_short = 0x80, },
1237 { .bitrate = 240,
1238 .hw_value = 0x200,
1239 .hw_value_short = 0x200, },
1240 { .bitrate = 360,
1241 .hw_value = 0x400,
1242 .hw_value_short = 0x400, },
1243 { .bitrate = 480,
1244 .hw_value = 0x800,
1245 .hw_value_short = 0x800, },
1246 { .bitrate = 540,
1247 .hw_value = 0x1000,
1248 .hw_value_short = 0x1000, },
1249 };
1250
1251 /* can't be const, mac80211 writes to this */
1252 static struct ieee80211_channel wl1251_channels[] = {
1253 { .hw_value = 1, .center_freq = 2412},
1254 { .hw_value = 2, .center_freq = 2417},
1255 { .hw_value = 3, .center_freq = 2422},
1256 { .hw_value = 4, .center_freq = 2427},
1257 { .hw_value = 5, .center_freq = 2432},
1258 { .hw_value = 6, .center_freq = 2437},
1259 { .hw_value = 7, .center_freq = 2442},
1260 { .hw_value = 8, .center_freq = 2447},
1261 { .hw_value = 9, .center_freq = 2452},
1262 { .hw_value = 10, .center_freq = 2457},
1263 { .hw_value = 11, .center_freq = 2462},
1264 { .hw_value = 12, .center_freq = 2467},
1265 { .hw_value = 13, .center_freq = 2472},
1266 };
1267
1268 /* can't be const, mac80211 writes to this */
1269 static struct ieee80211_supported_band wl1251_band_2ghz = {
1270 .channels = wl1251_channels,
1271 .n_channels = ARRAY_SIZE(wl1251_channels),
1272 .bitrates = wl1251_rates,
1273 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1274 };
1275
1276 static const struct ieee80211_ops wl1251_ops = {
1277 .start = wl1251_op_start,
1278 .stop = wl1251_op_stop,
1279 .add_interface = wl1251_op_add_interface,
1280 .remove_interface = wl1251_op_remove_interface,
1281 .config = wl1251_op_config,
1282 .configure_filter = wl1251_op_configure_filter,
1283 .tx = wl1251_op_tx,
1284 .set_key = wl1251_op_set_key,
1285 .hw_scan = wl1251_op_hw_scan,
1286 .bss_info_changed = wl1251_op_bss_info_changed,
1287 .set_rts_threshold = wl1251_op_set_rts_threshold,
1288 };
1289
1290 static int wl1251_register_hw(struct wl1251 *wl)
1291 {
1292 int ret;
1293
1294 if (wl->mac80211_registered)
1295 return 0;
1296
1297 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1298
1299 ret = ieee80211_register_hw(wl->hw);
1300 if (ret < 0) {
1301 wl1251_error("unable to register mac80211 hw: %d", ret);
1302 return ret;
1303 }
1304
1305 wl->mac80211_registered = true;
1306
1307 wl1251_notice("loaded");
1308
1309 return 0;
1310 }
1311
1312 int wl1251_init_ieee80211(struct wl1251 *wl)
1313 {
1314 int ret;
1315
1316 /* The tx descriptor buffer and the TKIP space */
1317 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1318 + WL1251_TKIP_IV_SPACE;
1319
1320 /* unit us */
1321 /* FIXME: find a proper value */
1322 wl->hw->channel_change_time = 10000;
1323
1324 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1325 IEEE80211_HW_NOISE_DBM |
1326 IEEE80211_HW_SUPPORTS_PS;
1327
1328 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1329 wl->hw->wiphy->max_scan_ssids = 1;
1330 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1331
1332 ret = wl1251_register_hw(wl);
1333 if (ret)
1334 goto out;
1335
1336 wl1251_debugfs_init(wl);
1337 wl1251_notice("initialized");
1338
1339 ret = 0;
1340
1341 out:
1342 return ret;
1343 }
1344 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1345
1346 struct ieee80211_hw *wl1251_alloc_hw(void)
1347 {
1348 struct ieee80211_hw *hw;
1349 struct wl1251 *wl;
1350 int i;
1351 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1352
1353 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1354 if (!hw) {
1355 wl1251_error("could not alloc ieee80211_hw");
1356 return ERR_PTR(-ENOMEM);
1357 }
1358
1359 wl = hw->priv;
1360 memset(wl, 0, sizeof(*wl));
1361
1362 wl->hw = hw;
1363
1364 wl->data_in_count = 0;
1365
1366 skb_queue_head_init(&wl->tx_queue);
1367
1368 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1369 wl->channel = WL1251_DEFAULT_CHANNEL;
1370 wl->scanning = false;
1371 wl->default_key = 0;
1372 wl->listen_int = 1;
1373 wl->rx_counter = 0;
1374 wl->rx_handled = 0;
1375 wl->rx_current_buffer = 0;
1376 wl->rx_last_id = 0;
1377 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1378 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1379 wl->elp = false;
1380 wl->psm = 0;
1381 wl->psm_requested = false;
1382 wl->tx_queue_stopped = false;
1383 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1384 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1385 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1386 wl->vif = NULL;
1387
1388 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1389 wl->tx_frames[i] = NULL;
1390
1391 wl->next_tx_complete = 0;
1392
1393 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1394 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1395
1396 /*
1397 * In case our MAC address is not correctly set,
1398 * we use a random but Nokia MAC.
1399 */
1400 memcpy(wl->mac_addr, nokia_oui, 3);
1401 get_random_bytes(wl->mac_addr + 3, 3);
1402
1403 wl->state = WL1251_STATE_OFF;
1404 mutex_init(&wl->mutex);
1405
1406 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1407 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1408
1409 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1410 if (!wl->rx_descriptor) {
1411 wl1251_error("could not allocate memory for rx descriptor");
1412 ieee80211_free_hw(hw);
1413 return ERR_PTR(-ENOMEM);
1414 }
1415
1416 return hw;
1417 }
1418 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1419
1420 int wl1251_free_hw(struct wl1251 *wl)
1421 {
1422 ieee80211_unregister_hw(wl->hw);
1423
1424 wl1251_debugfs_exit(wl);
1425
1426 kfree(wl->target_mem_map);
1427 kfree(wl->data_path);
1428 kfree(wl->fw);
1429 wl->fw = NULL;
1430 kfree(wl->nvs);
1431 wl->nvs = NULL;
1432
1433 kfree(wl->rx_descriptor);
1434 wl->rx_descriptor = NULL;
1435
1436 ieee80211_free_hw(wl->hw);
1437
1438 return 0;
1439 }
1440 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1441
1442 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1443 MODULE_LICENSE("GPL");
1444 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1445 MODULE_ALIAS("spi:wl1251");
1446 MODULE_FIRMWARE(WL1251_FW_NAME);
AMDTP streaming driver for the Linux FireWire stack (Juju)