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sfc: Don't use enums as a bitmask.
[zen-stable.git] / drivers / net / wireless / wl1251 / main.c
bloba14a48c99cdc73ff8e9c6182a2da7078d27c4550
1 /*
2 * This file is part of wl1251
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/firmware.h>
25 #include <linux/delay.h>
26 #include <linux/irq.h>
27 #include <linux/crc32.h>
28 #include <linux/etherdevice.h>
29 #include <linux/vmalloc.h>
30 #include <linux/slab.h>
31
32 #include "wl1251.h"
33 #include "wl12xx_80211.h"
34 #include "reg.h"
35 #include "io.h"
36 #include "cmd.h"
37 #include "event.h"
38 #include "tx.h"
39 #include "rx.h"
40 #include "ps.h"
41 #include "init.h"
42 #include "debugfs.h"
43 #include "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 int wl1251_power_off(struct wl1251 *wl)
56 {
57 return wl->if_ops->power(wl, false);
58 }
59
60 static int wl1251_power_on(struct wl1251 *wl)
61 {
62 return wl->if_ops->power(wl, 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 = vmalloc(wl->fw_len);
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 = kmemdup(fw->data, 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 ret = 0;
134
135 out:
136 release_firmware(fw);
137
138 return ret;
139 }
140
141 static void wl1251_fw_wakeup(struct wl1251 *wl)
142 {
143 u32 elp_reg;
144
145 elp_reg = ELPCTRL_WAKE_UP;
146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
148
149 if (!(elp_reg & ELPCTRL_WLAN_READY))
150 wl1251_warning("WLAN not ready");
151 }
152
153 static int wl1251_chip_wakeup(struct wl1251 *wl)
154 {
155 int ret;
156
157 ret = wl1251_power_on(wl);
158 if (ret < 0)
159 return ret;
160
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 if (wl->nvs == NULL && !wl->use_eeprom) {
205 /* No NVS from netlink, try to get it from the filesystem */
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_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl, 0);
300 }
301
302 if (intr & WL1251_ACX_INTR_EVENT_B) {
303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
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 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
344 if (ret < 0)
345 wl1251_warning("join timeout");
346
347 out:
348 return ret;
349 }
350
351 static void wl1251_filter_work(struct work_struct *work)
352 {
353 struct wl1251 *wl =
354 container_of(work, struct wl1251, filter_work);
355 int ret;
356
357 mutex_lock(&wl->mutex);
358
359 if (wl->state == WL1251_STATE_OFF)
360 goto out;
361
362 ret = wl1251_ps_elp_wakeup(wl);
363 if (ret < 0)
364 goto out;
365
366 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
367 wl->dtim_period);
368 if (ret < 0)
369 goto out_sleep;
370
371 out_sleep:
372 wl1251_ps_elp_sleep(wl);
373
374 out:
375 mutex_unlock(&wl->mutex);
376 }
377
378 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
379 {
380 struct wl1251 *wl = hw->priv;
381 unsigned long flags;
382
383 skb_queue_tail(&wl->tx_queue, skb);
384
385 /*
386 * The chip specific setup must run before the first TX packet -
387 * before that, the tx_work will not be initialized!
388 */
389
390 ieee80211_queue_work(wl->hw, &wl->tx_work);
391
392 /*
393 * The workqueue is slow to process the tx_queue and we need stop
394 * the queue here, otherwise the queue will get too long.
395 */
396 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
397 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
398
399 spin_lock_irqsave(&wl->wl_lock, flags);
400 ieee80211_stop_queues(wl->hw);
401 wl->tx_queue_stopped = true;
402 spin_unlock_irqrestore(&wl->wl_lock, flags);
403 }
404 }
405
406 static int wl1251_op_start(struct ieee80211_hw *hw)
407 {
408 struct wl1251 *wl = hw->priv;
409 struct wiphy *wiphy = hw->wiphy;
410 int ret = 0;
411
412 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
413
414 mutex_lock(&wl->mutex);
415
416 if (wl->state != WL1251_STATE_OFF) {
417 wl1251_error("cannot start because not in off state: %d",
418 wl->state);
419 ret = -EBUSY;
420 goto out;
421 }
422
423 ret = wl1251_chip_wakeup(wl);
424 if (ret < 0)
425 goto out;
426
427 ret = wl1251_boot(wl);
428 if (ret < 0)
429 goto out;
430
431 ret = wl1251_hw_init(wl);
432 if (ret < 0)
433 goto out;
434
435 ret = wl1251_acx_station_id(wl);
436 if (ret < 0)
437 goto out;
438
439 wl->state = WL1251_STATE_ON;
440
441 wl1251_info("firmware booted (%s)", wl->fw_ver);
442
443 /* update hw/fw version info in wiphy struct */
444 wiphy->hw_version = wl->chip_id;
445 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
446
447 out:
448 if (ret < 0)
449 wl1251_power_off(wl);
450
451 mutex_unlock(&wl->mutex);
452
453 return ret;
454 }
455
456 static void wl1251_op_stop(struct ieee80211_hw *hw)
457 {
458 struct wl1251 *wl = hw->priv;
459
460 wl1251_info("down");
461
462 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
463
464 mutex_lock(&wl->mutex);
465
466 WARN_ON(wl->state != WL1251_STATE_ON);
467
468 if (wl->scanning) {
469 ieee80211_scan_completed(wl->hw, true);
470 wl->scanning = false;
471 }
472
473 wl->state = WL1251_STATE_OFF;
474
475 wl1251_disable_interrupts(wl);
476
477 mutex_unlock(&wl->mutex);
478
479 cancel_work_sync(&wl->irq_work);
480 cancel_work_sync(&wl->tx_work);
481 cancel_work_sync(&wl->filter_work);
482
483 mutex_lock(&wl->mutex);
484
485 /* let's notify MAC80211 about the remaining pending TX frames */
486 wl1251_tx_flush(wl);
487 wl1251_power_off(wl);
488
489 memset(wl->bssid, 0, ETH_ALEN);
490 wl->listen_int = 1;
491 wl->bss_type = MAX_BSS_TYPE;
492
493 wl->data_in_count = 0;
494 wl->rx_counter = 0;
495 wl->rx_handled = 0;
496 wl->rx_current_buffer = 0;
497 wl->rx_last_id = 0;
498 wl->next_tx_complete = 0;
499 wl->elp = false;
500 wl->station_mode = STATION_ACTIVE_MODE;
501 wl->tx_queue_stopped = false;
502 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
503 wl->rssi_thold = 0;
504 wl->channel = WL1251_DEFAULT_CHANNEL;
505
506 wl1251_debugfs_reset(wl);
507
508 mutex_unlock(&wl->mutex);
509 }
510
511 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
512 struct ieee80211_vif *vif)
513 {
514 struct wl1251 *wl = hw->priv;
515 int ret = 0;
516
517 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
518 vif->type, vif->addr);
519
520 mutex_lock(&wl->mutex);
521 if (wl->vif) {
522 ret = -EBUSY;
523 goto out;
524 }
525
526 wl->vif = vif;
527
528 switch (vif->type) {
529 case NL80211_IFTYPE_STATION:
530 wl->bss_type = BSS_TYPE_STA_BSS;
531 break;
532 case NL80211_IFTYPE_ADHOC:
533 wl->bss_type = BSS_TYPE_IBSS;
534 break;
535 default:
536 ret = -EOPNOTSUPP;
537 goto out;
538 }
539
540 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
541 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
542 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
543 ret = wl1251_acx_station_id(wl);
544 if (ret < 0)
545 goto out;
546 }
547
548 out:
549 mutex_unlock(&wl->mutex);
550 return ret;
551 }
552
553 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
554 struct ieee80211_vif *vif)
555 {
556 struct wl1251 *wl = hw->priv;
557
558 mutex_lock(&wl->mutex);
559 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
560 wl->vif = NULL;
561 mutex_unlock(&wl->mutex);
562 }
563
564 static int wl1251_build_qos_null_data(struct wl1251 *wl)
565 {
566 struct ieee80211_qos_hdr template;
567
568 memset(&template, 0, sizeof(template));
569
570 memcpy(template.addr1, wl->bssid, ETH_ALEN);
571 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
572 memcpy(template.addr3, wl->bssid, ETH_ALEN);
573
574 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
575 IEEE80211_STYPE_QOS_NULLFUNC |
576 IEEE80211_FCTL_TODS);
577
578 /* FIXME: not sure what priority to use here */
579 template.qos_ctrl = cpu_to_le16(0);
580
581 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
582 sizeof(template));
583 }
584
585 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
586 {
587 struct wl1251 *wl = hw->priv;
588 struct ieee80211_conf *conf = &hw->conf;
589 int channel, ret = 0;
590
591 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
592
593 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
594 channel,
595 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
596 conf->power_level);
597
598 mutex_lock(&wl->mutex);
599
600 ret = wl1251_ps_elp_wakeup(wl);
601 if (ret < 0)
602 goto out;
603
604 if (channel != wl->channel) {
605 wl->channel = channel;
606
607 ret = wl1251_join(wl, wl->bss_type, wl->channel,
608 wl->beacon_int, wl->dtim_period);
609 if (ret < 0)
610 goto out_sleep;
611 }
612
613 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
614 wl1251_debug(DEBUG_PSM, "psm enabled");
615
616 wl->psm_requested = true;
617
618 wl->dtim_period = conf->ps_dtim_period;
619
620 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
621 wl->dtim_period);
622
623 /*
624 * mac80211 enables PSM only if we're already associated.
625 */
626 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
627 if (ret < 0)
628 goto out_sleep;
629 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
630 wl->psm_requested) {
631 wl1251_debug(DEBUG_PSM, "psm disabled");
632
633 wl->psm_requested = false;
634
635 if (wl->station_mode != STATION_ACTIVE_MODE) {
636 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
637 if (ret < 0)
638 goto out_sleep;
639 }
640 }
641
642 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
643 if (conf->flags & IEEE80211_CONF_IDLE) {
644 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
645 if (ret < 0)
646 goto out_sleep;
647 } else {
648 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
649 if (ret < 0)
650 goto out_sleep;
651 ret = wl1251_join(wl, wl->bss_type, wl->channel,
652 wl->beacon_int, wl->dtim_period);
653 if (ret < 0)
654 goto out_sleep;
655 }
656 }
657
658 if (conf->power_level != wl->power_level) {
659 ret = wl1251_acx_tx_power(wl, conf->power_level);
660 if (ret < 0)
661 goto out_sleep;
662
663 wl->power_level = conf->power_level;
664 }
665
666 out_sleep:
667 wl1251_ps_elp_sleep(wl);
668
669 out:
670 mutex_unlock(&wl->mutex);
671
672 return ret;
673 }
674
675 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
676 FIF_ALLMULTI | \
677 FIF_FCSFAIL | \
678 FIF_BCN_PRBRESP_PROMISC | \
679 FIF_CONTROL | \
680 FIF_OTHER_BSS)
681
682 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
683 unsigned int changed,
684 unsigned int *total,u64 multicast)
685 {
686 struct wl1251 *wl = hw->priv;
687
688 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
689
690 *total &= WL1251_SUPPORTED_FILTERS;
691 changed &= WL1251_SUPPORTED_FILTERS;
692
693 if (changed == 0)
694 /* no filters which we support changed */
695 return;
696
697 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
698
699 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
700 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
701
702 if (*total & FIF_PROMISC_IN_BSS) {
703 wl->rx_config |= CFG_BSSID_FILTER_EN;
704 wl->rx_config |= CFG_RX_ALL_GOOD;
705 }
706 if (*total & FIF_ALLMULTI)
707 /*
708 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
709 * all multicast frames
710 */
711 wl->rx_config &= ~CFG_MC_FILTER_EN;
712 if (*total & FIF_FCSFAIL)
713 wl->rx_filter |= CFG_RX_FCS_ERROR;
714 if (*total & FIF_BCN_PRBRESP_PROMISC) {
715 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
716 wl->rx_config &= ~CFG_SSID_FILTER_EN;
717 }
718 if (*total & FIF_CONTROL)
719 wl->rx_filter |= CFG_RX_CTL_EN;
720 if (*total & FIF_OTHER_BSS)
721 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
722
723 /*
724 * FIXME: workqueues need to be properly cancelled on stop(), for
725 * now let's just disable changing the filter settings. They will
726 * be updated any on config().
727 */
728 /* schedule_work(&wl->filter_work); */
729 }
730
731 /* HW encryption */
732 static int wl1251_set_key_type(struct wl1251 *wl,
733 struct wl1251_cmd_set_keys *key,
734 enum set_key_cmd cmd,
735 struct ieee80211_key_conf *mac80211_key,
736 const u8 *addr)
737 {
738 switch (mac80211_key->cipher) {
739 case WLAN_CIPHER_SUITE_WEP40:
740 case WLAN_CIPHER_SUITE_WEP104:
741 if (is_broadcast_ether_addr(addr))
742 key->key_type = KEY_WEP_DEFAULT;
743 else
744 key->key_type = KEY_WEP_ADDR;
745
746 mac80211_key->hw_key_idx = mac80211_key->keyidx;
747 break;
748 case WLAN_CIPHER_SUITE_TKIP:
749 if (is_broadcast_ether_addr(addr))
750 key->key_type = KEY_TKIP_MIC_GROUP;
751 else
752 key->key_type = KEY_TKIP_MIC_PAIRWISE;
753
754 mac80211_key->hw_key_idx = mac80211_key->keyidx;
755 break;
756 case WLAN_CIPHER_SUITE_CCMP:
757 if (is_broadcast_ether_addr(addr))
758 key->key_type = KEY_AES_GROUP;
759 else
760 key->key_type = KEY_AES_PAIRWISE;
761 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
762 break;
763 default:
764 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
765 return -EOPNOTSUPP;
766 }
767
768 return 0;
769 }
770
771 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
772 struct ieee80211_vif *vif,
773 struct ieee80211_sta *sta,
774 struct ieee80211_key_conf *key)
775 {
776 struct wl1251 *wl = hw->priv;
777 struct wl1251_cmd_set_keys *wl_cmd;
778 const u8 *addr;
779 int ret;
780
781 static const u8 bcast_addr[ETH_ALEN] =
782 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
783
784 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
785
786 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
787 if (!wl_cmd) {
788 ret = -ENOMEM;
789 goto out;
790 }
791
792 addr = sta ? sta->addr : bcast_addr;
793
794 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
795 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
796 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
797 key->cipher, key->keyidx, key->keylen, key->flags);
798 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
799
800 if (is_zero_ether_addr(addr)) {
801 /* We dont support TX only encryption */
802 ret = -EOPNOTSUPP;
803 goto out;
804 }
805
806 mutex_lock(&wl->mutex);
807
808 ret = wl1251_ps_elp_wakeup(wl);
809 if (ret < 0)
810 goto out_unlock;
811
812 switch (cmd) {
813 case SET_KEY:
814 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
815 break;
816 case DISABLE_KEY:
817 wl_cmd->key_action = KEY_REMOVE;
818 break;
819 default:
820 wl1251_error("Unsupported key cmd 0x%x", cmd);
821 break;
822 }
823
824 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
825 if (ret < 0) {
826 wl1251_error("Set KEY type failed");
827 goto out_sleep;
828 }
829
830 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
831 memcpy(wl_cmd->addr, addr, ETH_ALEN);
832
833 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
834 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
835 /*
836 * We get the key in the following form:
837 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
838 * but the target is expecting:
839 * TKIP - RX MIC - TX MIC
840 */
841 memcpy(wl_cmd->key, key->key, 16);
842 memcpy(wl_cmd->key + 16, key->key + 24, 8);
843 memcpy(wl_cmd->key + 24, key->key + 16, 8);
844
845 } else {
846 memcpy(wl_cmd->key, key->key, key->keylen);
847 }
848 wl_cmd->key_size = key->keylen;
849
850 wl_cmd->id = key->keyidx;
851 wl_cmd->ssid_profile = 0;
852
853 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
854
855 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
856 if (ret < 0) {
857 wl1251_warning("could not set keys");
858 goto out_sleep;
859 }
860
861 out_sleep:
862 wl1251_ps_elp_sleep(wl);
863
864 out_unlock:
865 mutex_unlock(&wl->mutex);
866
867 out:
868 kfree(wl_cmd);
869
870 return ret;
871 }
872
873 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
874 struct ieee80211_vif *vif,
875 struct cfg80211_scan_request *req)
876 {
877 struct wl1251 *wl = hw->priv;
878 struct sk_buff *skb;
879 size_t ssid_len = 0;
880 u8 *ssid = NULL;
881 int ret;
882
883 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
884
885 if (req->n_ssids) {
886 ssid = req->ssids[0].ssid;
887 ssid_len = req->ssids[0].ssid_len;
888 }
889
890 mutex_lock(&wl->mutex);
891
892 if (wl->scanning) {
893 wl1251_debug(DEBUG_SCAN, "scan already in progress");
894 ret = -EINVAL;
895 goto out;
896 }
897
898 ret = wl1251_ps_elp_wakeup(wl);
899 if (ret < 0)
900 goto out;
901
902 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
903 req->ie, req->ie_len);
904 if (!skb) {
905 ret = -ENOMEM;
906 goto out;
907 }
908
909 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
910 skb->len);
911 dev_kfree_skb(skb);
912 if (ret < 0)
913 goto out_sleep;
914
915 ret = wl1251_cmd_trigger_scan_to(wl, 0);
916 if (ret < 0)
917 goto out_sleep;
918
919 wl->scanning = true;
920
921 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
922 req->n_channels, WL1251_SCAN_NUM_PROBES);
923 if (ret < 0) {
924 wl->scanning = false;
925 goto out_sleep;
926 }
927
928 out_sleep:
929 wl1251_ps_elp_sleep(wl);
930
931 out:
932 mutex_unlock(&wl->mutex);
933
934 return ret;
935 }
936
937 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
938 {
939 struct wl1251 *wl = hw->priv;
940 int ret;
941
942 mutex_lock(&wl->mutex);
943
944 ret = wl1251_ps_elp_wakeup(wl);
945 if (ret < 0)
946 goto out;
947
948 ret = wl1251_acx_rts_threshold(wl, (u16) value);
949 if (ret < 0)
950 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
951
952 wl1251_ps_elp_sleep(wl);
953
954 out:
955 mutex_unlock(&wl->mutex);
956
957 return ret;
958 }
959
960 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
961 struct ieee80211_vif *vif,
962 struct ieee80211_bss_conf *bss_conf,
963 u32 changed)
964 {
965 struct wl1251 *wl = hw->priv;
966 struct sk_buff *beacon, *skb;
967 int ret;
968
969 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
970
971 mutex_lock(&wl->mutex);
972
973 ret = wl1251_ps_elp_wakeup(wl);
974 if (ret < 0)
975 goto out;
976
977 if (changed & BSS_CHANGED_CQM) {
978 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
979 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
980 WL1251_DEFAULT_LOW_RSSI_DEPTH,
981 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
982 if (ret < 0)
983 goto out;
984 wl->rssi_thold = bss_conf->cqm_rssi_thold;
985 }
986
987 if (changed & BSS_CHANGED_BSSID) {
988 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
989
990 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
991 if (!skb)
992 goto out_sleep;
993
994 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
995 skb->data, skb->len);
996 dev_kfree_skb(skb);
997 if (ret < 0)
998 goto out_sleep;
999
1000 ret = wl1251_build_qos_null_data(wl);
1001 if (ret < 0)
1002 goto out;
1003
1004 if (wl->bss_type != BSS_TYPE_IBSS) {
1005 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1006 wl->beacon_int, wl->dtim_period);
1007 if (ret < 0)
1008 goto out_sleep;
1009 }
1010 }
1011
1012 if (changed & BSS_CHANGED_ASSOC) {
1013 if (bss_conf->assoc) {
1014 wl->beacon_int = bss_conf->beacon_int;
1015
1016 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1017 if (!skb)
1018 goto out_sleep;
1019
1020 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1021 skb->data,
1022 skb->len);
1023 dev_kfree_skb(skb);
1024 if (ret < 0)
1025 goto out_sleep;
1026
1027 ret = wl1251_acx_aid(wl, bss_conf->aid);
1028 if (ret < 0)
1029 goto out_sleep;
1030 } else {
1031 /* use defaults when not associated */
1032 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1033 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1034 }
1035 }
1036 if (changed & BSS_CHANGED_ERP_SLOT) {
1037 if (bss_conf->use_short_slot)
1038 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1039 else
1040 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1041 if (ret < 0) {
1042 wl1251_warning("Set slot time failed %d", ret);
1043 goto out_sleep;
1044 }
1045 }
1046
1047 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1048 if (bss_conf->use_short_preamble)
1049 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1050 else
1051 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1052 }
1053
1054 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1055 if (bss_conf->use_cts_prot)
1056 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1057 else
1058 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1059 if (ret < 0) {
1060 wl1251_warning("Set ctsprotect failed %d", ret);
1061 goto out_sleep;
1062 }
1063 }
1064
1065 if (changed & BSS_CHANGED_BEACON) {
1066 beacon = ieee80211_beacon_get(hw, vif);
1067 if (!beacon)
1068 goto out_sleep;
1069
1070 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1071 beacon->len);
1072
1073 if (ret < 0) {
1074 dev_kfree_skb(beacon);
1075 goto out_sleep;
1076 }
1077
1078 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1079 beacon->len);
1080
1081 dev_kfree_skb(beacon);
1082
1083 if (ret < 0)
1084 goto out_sleep;
1085
1086 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1087 wl->channel, wl->dtim_period);
1088
1089 if (ret < 0)
1090 goto out_sleep;
1091 }
1092
1093 out_sleep:
1094 wl1251_ps_elp_sleep(wl);
1095
1096 out:
1097 mutex_unlock(&wl->mutex);
1098 }
1099
1100
1101 /* can't be const, mac80211 writes to this */
1102 static struct ieee80211_rate wl1251_rates[] = {
1103 { .bitrate = 10,
1104 .hw_value = 0x1,
1105 .hw_value_short = 0x1, },
1106 { .bitrate = 20,
1107 .hw_value = 0x2,
1108 .hw_value_short = 0x2,
1109 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1110 { .bitrate = 55,
1111 .hw_value = 0x4,
1112 .hw_value_short = 0x4,
1113 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1114 { .bitrate = 110,
1115 .hw_value = 0x20,
1116 .hw_value_short = 0x20,
1117 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1118 { .bitrate = 60,
1119 .hw_value = 0x8,
1120 .hw_value_short = 0x8, },
1121 { .bitrate = 90,
1122 .hw_value = 0x10,
1123 .hw_value_short = 0x10, },
1124 { .bitrate = 120,
1125 .hw_value = 0x40,
1126 .hw_value_short = 0x40, },
1127 { .bitrate = 180,
1128 .hw_value = 0x80,
1129 .hw_value_short = 0x80, },
1130 { .bitrate = 240,
1131 .hw_value = 0x200,
1132 .hw_value_short = 0x200, },
1133 { .bitrate = 360,
1134 .hw_value = 0x400,
1135 .hw_value_short = 0x400, },
1136 { .bitrate = 480,
1137 .hw_value = 0x800,
1138 .hw_value_short = 0x800, },
1139 { .bitrate = 540,
1140 .hw_value = 0x1000,
1141 .hw_value_short = 0x1000, },
1142 };
1143
1144 /* can't be const, mac80211 writes to this */
1145 static struct ieee80211_channel wl1251_channels[] = {
1146 { .hw_value = 1, .center_freq = 2412},
1147 { .hw_value = 2, .center_freq = 2417},
1148 { .hw_value = 3, .center_freq = 2422},
1149 { .hw_value = 4, .center_freq = 2427},
1150 { .hw_value = 5, .center_freq = 2432},
1151 { .hw_value = 6, .center_freq = 2437},
1152 { .hw_value = 7, .center_freq = 2442},
1153 { .hw_value = 8, .center_freq = 2447},
1154 { .hw_value = 9, .center_freq = 2452},
1155 { .hw_value = 10, .center_freq = 2457},
1156 { .hw_value = 11, .center_freq = 2462},
1157 { .hw_value = 12, .center_freq = 2467},
1158 { .hw_value = 13, .center_freq = 2472},
1159 };
1160
1161 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1162 const struct ieee80211_tx_queue_params *params)
1163 {
1164 enum wl1251_acx_ps_scheme ps_scheme;
1165 struct wl1251 *wl = hw->priv;
1166 int ret;
1167
1168 mutex_lock(&wl->mutex);
1169
1170 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1171
1172 ret = wl1251_ps_elp_wakeup(wl);
1173 if (ret < 0)
1174 goto out;
1175
1176 /* mac80211 uses units of 32 usec */
1177 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1178 params->cw_min, params->cw_max,
1179 params->aifs, params->txop * 32);
1180 if (ret < 0)
1181 goto out_sleep;
1182
1183 if (params->uapsd)
1184 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1185 else
1186 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1187
1188 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1189 CHANNEL_TYPE_EDCF,
1190 wl1251_tx_get_queue(queue), ps_scheme,
1191 WL1251_ACX_ACK_POLICY_LEGACY);
1192 if (ret < 0)
1193 goto out_sleep;
1194
1195 out_sleep:
1196 wl1251_ps_elp_sleep(wl);
1197
1198 out:
1199 mutex_unlock(&wl->mutex);
1200
1201 return ret;
1202 }
1203
1204 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1205 struct survey_info *survey)
1206 {
1207 struct wl1251 *wl = hw->priv;
1208 struct ieee80211_conf *conf = &hw->conf;
1209
1210 if (idx != 0)
1211 return -ENOENT;
1212
1213 survey->channel = conf->channel;
1214 survey->filled = SURVEY_INFO_NOISE_DBM;
1215 survey->noise = wl->noise;
1216
1217 return 0;
1218 }
1219
1220 /* can't be const, mac80211 writes to this */
1221 static struct ieee80211_supported_band wl1251_band_2ghz = {
1222 .channels = wl1251_channels,
1223 .n_channels = ARRAY_SIZE(wl1251_channels),
1224 .bitrates = wl1251_rates,
1225 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1226 };
1227
1228 static const struct ieee80211_ops wl1251_ops = {
1229 .start = wl1251_op_start,
1230 .stop = wl1251_op_stop,
1231 .add_interface = wl1251_op_add_interface,
1232 .remove_interface = wl1251_op_remove_interface,
1233 .config = wl1251_op_config,
1234 .configure_filter = wl1251_op_configure_filter,
1235 .tx = wl1251_op_tx,
1236 .set_key = wl1251_op_set_key,
1237 .hw_scan = wl1251_op_hw_scan,
1238 .bss_info_changed = wl1251_op_bss_info_changed,
1239 .set_rts_threshold = wl1251_op_set_rts_threshold,
1240 .conf_tx = wl1251_op_conf_tx,
1241 .get_survey = wl1251_op_get_survey,
1242 };
1243
1244 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1245 {
1246 unsigned long timeout;
1247
1248 wl1251_reg_write32(wl, EE_ADDR, offset);
1249 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1250
1251 /* EE_CTL_READ clears when data is ready */
1252 timeout = jiffies + msecs_to_jiffies(100);
1253 while (1) {
1254 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1255 break;
1256
1257 if (time_after(jiffies, timeout))
1258 return -ETIMEDOUT;
1259
1260 msleep(1);
1261 }
1262
1263 *data = wl1251_reg_read32(wl, EE_DATA);
1264 return 0;
1265 }
1266
1267 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1268 u8 *data, size_t len)
1269 {
1270 size_t i;
1271 int ret;
1272
1273 wl1251_reg_write32(wl, EE_START, 0);
1274
1275 for (i = 0; i < len; i++) {
1276 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1277 if (ret < 0)
1278 return ret;
1279 }
1280
1281 return 0;
1282 }
1283
1284 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1285 {
1286 u8 mac[ETH_ALEN];
1287 int i, ret;
1288
1289 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1290
1291 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1292 if (ret < 0) {
1293 wl1251_warning("failed to read MAC address from EEPROM");
1294 return ret;
1295 }
1296
1297 /* MAC is stored in reverse order */
1298 for (i = 0; i < ETH_ALEN; i++)
1299 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1300
1301 return 0;
1302 }
1303
1304 static int wl1251_register_hw(struct wl1251 *wl)
1305 {
1306 int ret;
1307
1308 if (wl->mac80211_registered)
1309 return 0;
1310
1311 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1312
1313 ret = ieee80211_register_hw(wl->hw);
1314 if (ret < 0) {
1315 wl1251_error("unable to register mac80211 hw: %d", ret);
1316 return ret;
1317 }
1318
1319 wl->mac80211_registered = true;
1320
1321 wl1251_notice("loaded");
1322
1323 return 0;
1324 }
1325
1326 int wl1251_init_ieee80211(struct wl1251 *wl)
1327 {
1328 int ret;
1329
1330 /* The tx descriptor buffer and the TKIP space */
1331 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1332 + WL1251_TKIP_IV_SPACE;
1333
1334 /* unit us */
1335 /* FIXME: find a proper value */
1336 wl->hw->channel_change_time = 10000;
1337
1338 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1339 IEEE80211_HW_SUPPORTS_PS |
1340 IEEE80211_HW_BEACON_FILTER |
1341 IEEE80211_HW_SUPPORTS_UAPSD |
1342 IEEE80211_HW_SUPPORTS_CQM_RSSI;
1343
1344 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1345 BIT(NL80211_IFTYPE_ADHOC);
1346 wl->hw->wiphy->max_scan_ssids = 1;
1347 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1348
1349 wl->hw->queues = 4;
1350
1351 if (wl->use_eeprom)
1352 wl1251_read_eeprom_mac(wl);
1353
1354 ret = wl1251_register_hw(wl);
1355 if (ret)
1356 goto out;
1357
1358 wl1251_debugfs_init(wl);
1359 wl1251_notice("initialized");
1360
1361 ret = 0;
1362
1363 out:
1364 return ret;
1365 }
1366 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1367
1368 struct ieee80211_hw *wl1251_alloc_hw(void)
1369 {
1370 struct ieee80211_hw *hw;
1371 struct wl1251 *wl;
1372 int i;
1373 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1374
1375 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1376 if (!hw) {
1377 wl1251_error("could not alloc ieee80211_hw");
1378 return ERR_PTR(-ENOMEM);
1379 }
1380
1381 wl = hw->priv;
1382 memset(wl, 0, sizeof(*wl));
1383
1384 wl->hw = hw;
1385
1386 wl->data_in_count = 0;
1387
1388 skb_queue_head_init(&wl->tx_queue);
1389
1390 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1391 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1392 wl->channel = WL1251_DEFAULT_CHANNEL;
1393 wl->scanning = false;
1394 wl->default_key = 0;
1395 wl->listen_int = 1;
1396 wl->rx_counter = 0;
1397 wl->rx_handled = 0;
1398 wl->rx_current_buffer = 0;
1399 wl->rx_last_id = 0;
1400 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1401 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1402 wl->elp = false;
1403 wl->station_mode = STATION_ACTIVE_MODE;
1404 wl->psm_requested = false;
1405 wl->tx_queue_stopped = false;
1406 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1407 wl->rssi_thold = 0;
1408 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1409 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1410 wl->vif = NULL;
1411
1412 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1413 wl->tx_frames[i] = NULL;
1414
1415 wl->next_tx_complete = 0;
1416
1417 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1418 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1419
1420 /*
1421 * In case our MAC address is not correctly set,
1422 * we use a random but Nokia MAC.
1423 */
1424 memcpy(wl->mac_addr, nokia_oui, 3);
1425 get_random_bytes(wl->mac_addr + 3, 3);
1426
1427 wl->state = WL1251_STATE_OFF;
1428 mutex_init(&wl->mutex);
1429
1430 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1431 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1432
1433 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1434 if (!wl->rx_descriptor) {
1435 wl1251_error("could not allocate memory for rx descriptor");
1436 ieee80211_free_hw(hw);
1437 return ERR_PTR(-ENOMEM);
1438 }
1439
1440 return hw;
1441 }
1442 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1443
1444 int wl1251_free_hw(struct wl1251 *wl)
1445 {
1446 ieee80211_unregister_hw(wl->hw);
1447
1448 wl1251_debugfs_exit(wl);
1449
1450 kfree(wl->target_mem_map);
1451 kfree(wl->data_path);
1452 vfree(wl->fw);
1453 wl->fw = NULL;
1454 kfree(wl->nvs);
1455 wl->nvs = NULL;
1456
1457 kfree(wl->rx_descriptor);
1458 wl->rx_descriptor = NULL;
1459
1460 ieee80211_free_hw(wl->hw);
1461
1462 return 0;
1463 }
1464 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1465
1466 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1467 MODULE_LICENSE("GPL");
1468 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1469 MODULE_FIRMWARE(WL1251_FW_NAME);