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mac80211: remove probe response temporary buffer allocation
[deliverable/linux.git] / drivers / net / wireless / ti / wl1251 / main.c
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 * Join command applies filters, and if we are not associated,
339 * BSSID filter must be disabled for association to work.
340 */
341 if (is_zero_ether_addr(wl->bssid))
342 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
343
344 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
345 dtim_period);
346 if (ret < 0)
347 goto out;
348
349 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
350 if (ret < 0)
351 wl1251_warning("join timeout");
352
353 out:
354 return ret;
355 }
356
357 static void wl1251_op_tx(struct ieee80211_hw *hw,
358 struct ieee80211_tx_control *control,
359 struct sk_buff *skb)
360 {
361 struct wl1251 *wl = hw->priv;
362 unsigned long flags;
363
364 skb_queue_tail(&wl->tx_queue, skb);
365
366 /*
367 * The chip specific setup must run before the first TX packet -
368 * before that, the tx_work will not be initialized!
369 */
370
371 ieee80211_queue_work(wl->hw, &wl->tx_work);
372
373 /*
374 * The workqueue is slow to process the tx_queue and we need stop
375 * the queue here, otherwise the queue will get too long.
376 */
377 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
378 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
379
380 spin_lock_irqsave(&wl->wl_lock, flags);
381 ieee80211_stop_queues(wl->hw);
382 wl->tx_queue_stopped = true;
383 spin_unlock_irqrestore(&wl->wl_lock, flags);
384 }
385 }
386
387 static int wl1251_op_start(struct ieee80211_hw *hw)
388 {
389 struct wl1251 *wl = hw->priv;
390 struct wiphy *wiphy = hw->wiphy;
391 int ret = 0;
392
393 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
394
395 mutex_lock(&wl->mutex);
396
397 if (wl->state != WL1251_STATE_OFF) {
398 wl1251_error("cannot start because not in off state: %d",
399 wl->state);
400 ret = -EBUSY;
401 goto out;
402 }
403
404 ret = wl1251_chip_wakeup(wl);
405 if (ret < 0)
406 goto out;
407
408 ret = wl1251_boot(wl);
409 if (ret < 0)
410 goto out;
411
412 ret = wl1251_hw_init(wl);
413 if (ret < 0)
414 goto out;
415
416 ret = wl1251_acx_station_id(wl);
417 if (ret < 0)
418 goto out;
419
420 wl->state = WL1251_STATE_ON;
421
422 wl1251_info("firmware booted (%s)", wl->fw_ver);
423
424 /* update hw/fw version info in wiphy struct */
425 wiphy->hw_version = wl->chip_id;
426 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
427
428 out:
429 if (ret < 0)
430 wl1251_power_off(wl);
431
432 mutex_unlock(&wl->mutex);
433
434 return ret;
435 }
436
437 static void wl1251_op_stop(struct ieee80211_hw *hw)
438 {
439 struct wl1251 *wl = hw->priv;
440
441 wl1251_info("down");
442
443 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
444
445 mutex_lock(&wl->mutex);
446
447 WARN_ON(wl->state != WL1251_STATE_ON);
448
449 if (wl->scanning) {
450 ieee80211_scan_completed(wl->hw, true);
451 wl->scanning = false;
452 }
453
454 wl->state = WL1251_STATE_OFF;
455
456 wl1251_disable_interrupts(wl);
457
458 mutex_unlock(&wl->mutex);
459
460 cancel_work_sync(&wl->irq_work);
461 cancel_work_sync(&wl->tx_work);
462 cancel_delayed_work_sync(&wl->elp_work);
463
464 mutex_lock(&wl->mutex);
465
466 /* let's notify MAC80211 about the remaining pending TX frames */
467 wl1251_tx_flush(wl);
468 wl1251_power_off(wl);
469
470 memset(wl->bssid, 0, ETH_ALEN);
471 wl->listen_int = 1;
472 wl->bss_type = MAX_BSS_TYPE;
473
474 wl->data_in_count = 0;
475 wl->rx_counter = 0;
476 wl->rx_handled = 0;
477 wl->rx_current_buffer = 0;
478 wl->rx_last_id = 0;
479 wl->next_tx_complete = 0;
480 wl->elp = false;
481 wl->station_mode = STATION_ACTIVE_MODE;
482 wl->tx_queue_stopped = false;
483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
484 wl->rssi_thold = 0;
485 wl->channel = WL1251_DEFAULT_CHANNEL;
486
487 wl1251_debugfs_reset(wl);
488
489 mutex_unlock(&wl->mutex);
490 }
491
492 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
493 struct ieee80211_vif *vif)
494 {
495 struct wl1251 *wl = hw->priv;
496 int ret = 0;
497
498 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
499 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
500
501 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
502 vif->type, vif->addr);
503
504 mutex_lock(&wl->mutex);
505 if (wl->vif) {
506 ret = -EBUSY;
507 goto out;
508 }
509
510 wl->vif = vif;
511
512 switch (vif->type) {
513 case NL80211_IFTYPE_STATION:
514 wl->bss_type = BSS_TYPE_STA_BSS;
515 break;
516 case NL80211_IFTYPE_ADHOC:
517 wl->bss_type = BSS_TYPE_IBSS;
518 break;
519 default:
520 ret = -EOPNOTSUPP;
521 goto out;
522 }
523
524 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
525 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
526 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
527 ret = wl1251_acx_station_id(wl);
528 if (ret < 0)
529 goto out;
530 }
531
532 out:
533 mutex_unlock(&wl->mutex);
534 return ret;
535 }
536
537 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
538 struct ieee80211_vif *vif)
539 {
540 struct wl1251 *wl = hw->priv;
541
542 mutex_lock(&wl->mutex);
543 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
544 wl->vif = NULL;
545 mutex_unlock(&wl->mutex);
546 }
547
548 static int wl1251_build_qos_null_data(struct wl1251 *wl)
549 {
550 struct ieee80211_qos_hdr template;
551
552 memset(&template, 0, sizeof(template));
553
554 memcpy(template.addr1, wl->bssid, ETH_ALEN);
555 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
556 memcpy(template.addr3, wl->bssid, ETH_ALEN);
557
558 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
559 IEEE80211_STYPE_QOS_NULLFUNC |
560 IEEE80211_FCTL_TODS);
561
562 /* FIXME: not sure what priority to use here */
563 template.qos_ctrl = cpu_to_le16(0);
564
565 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
566 sizeof(template));
567 }
568
569 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
570 {
571 struct wl1251 *wl = hw->priv;
572 struct ieee80211_conf *conf = &hw->conf;
573 int channel, ret = 0;
574
575 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
576
577 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
578 channel,
579 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
580 conf->power_level);
581
582 mutex_lock(&wl->mutex);
583
584 ret = wl1251_ps_elp_wakeup(wl);
585 if (ret < 0)
586 goto out;
587
588 if (channel != wl->channel) {
589 wl->channel = channel;
590
591 ret = wl1251_join(wl, wl->bss_type, wl->channel,
592 wl->beacon_int, wl->dtim_period);
593 if (ret < 0)
594 goto out_sleep;
595 }
596
597 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
598 wl1251_debug(DEBUG_PSM, "psm enabled");
599
600 wl->psm_requested = true;
601
602 wl->dtim_period = conf->ps_dtim_period;
603
604 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
605 wl->dtim_period);
606
607 /*
608 * mac80211 enables PSM only if we're already associated.
609 */
610 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
611 if (ret < 0)
612 goto out_sleep;
613 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
614 wl->psm_requested) {
615 wl1251_debug(DEBUG_PSM, "psm disabled");
616
617 wl->psm_requested = false;
618
619 if (wl->station_mode != STATION_ACTIVE_MODE) {
620 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
621 if (ret < 0)
622 goto out_sleep;
623 }
624 }
625
626 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
627 if (conf->flags & IEEE80211_CONF_IDLE) {
628 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
629 if (ret < 0)
630 goto out_sleep;
631 } else {
632 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
633 if (ret < 0)
634 goto out_sleep;
635 ret = wl1251_join(wl, wl->bss_type, wl->channel,
636 wl->beacon_int, wl->dtim_period);
637 if (ret < 0)
638 goto out_sleep;
639 }
640 }
641
642 if (conf->power_level != wl->power_level) {
643 ret = wl1251_acx_tx_power(wl, conf->power_level);
644 if (ret < 0)
645 goto out_sleep;
646
647 wl->power_level = conf->power_level;
648 }
649
650 out_sleep:
651 wl1251_ps_elp_sleep(wl);
652
653 out:
654 mutex_unlock(&wl->mutex);
655
656 return ret;
657 }
658
659 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
660 FIF_ALLMULTI | \
661 FIF_FCSFAIL | \
662 FIF_BCN_PRBRESP_PROMISC | \
663 FIF_CONTROL | \
664 FIF_OTHER_BSS | \
665 FIF_PROBE_REQ)
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 int ret;
673
674 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
675
676 *total &= WL1251_SUPPORTED_FILTERS;
677 changed &= WL1251_SUPPORTED_FILTERS;
678
679 if (changed == 0)
680 /* no filters which we support changed */
681 return;
682
683 mutex_lock(&wl->mutex);
684
685 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
686 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
687
688 if (*total & FIF_PROMISC_IN_BSS) {
689 wl->rx_config |= CFG_BSSID_FILTER_EN;
690 wl->rx_config |= CFG_RX_ALL_GOOD;
691 }
692 if (*total & FIF_ALLMULTI)
693 /*
694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
695 * all multicast frames
696 */
697 wl->rx_config &= ~CFG_MC_FILTER_EN;
698 if (*total & FIF_FCSFAIL)
699 wl->rx_filter |= CFG_RX_FCS_ERROR;
700 if (*total & FIF_BCN_PRBRESP_PROMISC) {
701 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
702 wl->rx_config &= ~CFG_SSID_FILTER_EN;
703 }
704 if (*total & FIF_CONTROL)
705 wl->rx_filter |= CFG_RX_CTL_EN;
706 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
707 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
708 if (*total & FIF_PROBE_REQ)
709 wl->rx_filter |= CFG_RX_PREQ_EN;
710
711 if (wl->state == WL1251_STATE_OFF)
712 goto out;
713
714 ret = wl1251_ps_elp_wakeup(wl);
715 if (ret < 0)
716 goto out;
717
718 /* send filters to firmware */
719 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
720
721 wl1251_ps_elp_sleep(wl);
722
723 out:
724 mutex_unlock(&wl->mutex);
725 }
726
727 /* HW encryption */
728 static int wl1251_set_key_type(struct wl1251 *wl,
729 struct wl1251_cmd_set_keys *key,
730 enum set_key_cmd cmd,
731 struct ieee80211_key_conf *mac80211_key,
732 const u8 *addr)
733 {
734 switch (mac80211_key->cipher) {
735 case WLAN_CIPHER_SUITE_WEP40:
736 case WLAN_CIPHER_SUITE_WEP104:
737 if (is_broadcast_ether_addr(addr))
738 key->key_type = KEY_WEP_DEFAULT;
739 else
740 key->key_type = KEY_WEP_ADDR;
741
742 mac80211_key->hw_key_idx = mac80211_key->keyidx;
743 break;
744 case WLAN_CIPHER_SUITE_TKIP:
745 if (is_broadcast_ether_addr(addr))
746 key->key_type = KEY_TKIP_MIC_GROUP;
747 else
748 key->key_type = KEY_TKIP_MIC_PAIRWISE;
749
750 mac80211_key->hw_key_idx = mac80211_key->keyidx;
751 break;
752 case WLAN_CIPHER_SUITE_CCMP:
753 if (is_broadcast_ether_addr(addr))
754 key->key_type = KEY_AES_GROUP;
755 else
756 key->key_type = KEY_AES_PAIRWISE;
757 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
758 break;
759 default:
760 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
761 return -EOPNOTSUPP;
762 }
763
764 return 0;
765 }
766
767 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
768 struct ieee80211_vif *vif,
769 struct ieee80211_sta *sta,
770 struct ieee80211_key_conf *key)
771 {
772 struct wl1251 *wl = hw->priv;
773 struct wl1251_cmd_set_keys *wl_cmd;
774 const u8 *addr;
775 int ret;
776
777 static const u8 bcast_addr[ETH_ALEN] =
778 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
779
780 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
781
782 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
783 if (!wl_cmd) {
784 ret = -ENOMEM;
785 goto out;
786 }
787
788 addr = sta ? sta->addr : bcast_addr;
789
790 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
791 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
792 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
793 key->cipher, key->keyidx, key->keylen, key->flags);
794 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
795
796 if (is_zero_ether_addr(addr)) {
797 /* We dont support TX only encryption */
798 ret = -EOPNOTSUPP;
799 goto out;
800 }
801
802 mutex_lock(&wl->mutex);
803
804 ret = wl1251_ps_elp_wakeup(wl);
805 if (ret < 0)
806 goto out_unlock;
807
808 switch (cmd) {
809 case SET_KEY:
810 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
811 break;
812 case DISABLE_KEY:
813 wl_cmd->key_action = KEY_REMOVE;
814 break;
815 default:
816 wl1251_error("Unsupported key cmd 0x%x", cmd);
817 break;
818 }
819
820 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
821 if (ret < 0) {
822 wl1251_error("Set KEY type failed");
823 goto out_sleep;
824 }
825
826 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
827 memcpy(wl_cmd->addr, addr, ETH_ALEN);
828
829 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
830 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
831 /*
832 * We get the key in the following form:
833 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
834 * but the target is expecting:
835 * TKIP - RX MIC - TX MIC
836 */
837 memcpy(wl_cmd->key, key->key, 16);
838 memcpy(wl_cmd->key + 16, key->key + 24, 8);
839 memcpy(wl_cmd->key + 24, key->key + 16, 8);
840
841 } else {
842 memcpy(wl_cmd->key, key->key, key->keylen);
843 }
844 wl_cmd->key_size = key->keylen;
845
846 wl_cmd->id = key->keyidx;
847 wl_cmd->ssid_profile = 0;
848
849 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
850
851 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
852 if (ret < 0) {
853 wl1251_warning("could not set keys");
854 goto out_sleep;
855 }
856
857 out_sleep:
858 wl1251_ps_elp_sleep(wl);
859
860 out_unlock:
861 mutex_unlock(&wl->mutex);
862
863 out:
864 kfree(wl_cmd);
865
866 return ret;
867 }
868
869 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
870 struct ieee80211_vif *vif,
871 struct cfg80211_scan_request *req)
872 {
873 struct wl1251 *wl = hw->priv;
874 struct sk_buff *skb;
875 size_t ssid_len = 0;
876 u8 *ssid = NULL;
877 int ret;
878
879 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
880
881 if (req->n_ssids) {
882 ssid = req->ssids[0].ssid;
883 ssid_len = req->ssids[0].ssid_len;
884 }
885
886 mutex_lock(&wl->mutex);
887
888 if (wl->scanning) {
889 wl1251_debug(DEBUG_SCAN, "scan already in progress");
890 ret = -EINVAL;
891 goto out;
892 }
893
894 ret = wl1251_ps_elp_wakeup(wl);
895 if (ret < 0)
896 goto out;
897
898 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
899 req->ie_len);
900 if (!skb) {
901 ret = -ENOMEM;
902 goto out;
903 }
904 if (req->ie_len)
905 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
906
907 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
908 skb->len);
909 dev_kfree_skb(skb);
910 if (ret < 0)
911 goto out_sleep;
912
913 ret = wl1251_cmd_trigger_scan_to(wl, 0);
914 if (ret < 0)
915 goto out_sleep;
916
917 wl->scanning = true;
918
919 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
920 req->n_channels, WL1251_SCAN_NUM_PROBES);
921 if (ret < 0) {
922 wl->scanning = false;
923 goto out_sleep;
924 }
925
926 out_sleep:
927 wl1251_ps_elp_sleep(wl);
928
929 out:
930 mutex_unlock(&wl->mutex);
931
932 return ret;
933 }
934
935 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
936 {
937 struct wl1251 *wl = hw->priv;
938 int ret;
939
940 mutex_lock(&wl->mutex);
941
942 ret = wl1251_ps_elp_wakeup(wl);
943 if (ret < 0)
944 goto out;
945
946 ret = wl1251_acx_rts_threshold(wl, (u16) value);
947 if (ret < 0)
948 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
949
950 wl1251_ps_elp_sleep(wl);
951
952 out:
953 mutex_unlock(&wl->mutex);
954
955 return ret;
956 }
957
958 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
959 struct ieee80211_vif *vif,
960 struct ieee80211_bss_conf *bss_conf,
961 u32 changed)
962 {
963 struct wl1251 *wl = hw->priv;
964 struct sk_buff *beacon, *skb;
965 int ret;
966
967 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
968
969 mutex_lock(&wl->mutex);
970
971 ret = wl1251_ps_elp_wakeup(wl);
972 if (ret < 0)
973 goto out;
974
975 if (changed & BSS_CHANGED_CQM) {
976 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
977 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
978 WL1251_DEFAULT_LOW_RSSI_DEPTH,
979 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
980 if (ret < 0)
981 goto out;
982 wl->rssi_thold = bss_conf->cqm_rssi_thold;
983 }
984
985 if (changed & BSS_CHANGED_BSSID) {
986 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
987
988 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
989 if (!skb)
990 goto out_sleep;
991
992 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
993 skb->data, skb->len);
994 dev_kfree_skb(skb);
995 if (ret < 0)
996 goto out_sleep;
997
998 ret = wl1251_build_qos_null_data(wl);
999 if (ret < 0)
1000 goto out;
1001
1002 if (wl->bss_type != BSS_TYPE_IBSS) {
1003 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1004 wl->beacon_int, wl->dtim_period);
1005 if (ret < 0)
1006 goto out_sleep;
1007 }
1008 }
1009
1010 if (changed & BSS_CHANGED_ASSOC) {
1011 if (bss_conf->assoc) {
1012 wl->beacon_int = bss_conf->beacon_int;
1013
1014 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1015 if (!skb)
1016 goto out_sleep;
1017
1018 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1019 skb->data,
1020 skb->len);
1021 dev_kfree_skb(skb);
1022 if (ret < 0)
1023 goto out_sleep;
1024
1025 ret = wl1251_acx_aid(wl, bss_conf->aid);
1026 if (ret < 0)
1027 goto out_sleep;
1028 } else {
1029 /* use defaults when not associated */
1030 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1031 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1032 }
1033 }
1034 if (changed & BSS_CHANGED_ERP_SLOT) {
1035 if (bss_conf->use_short_slot)
1036 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1037 else
1038 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1039 if (ret < 0) {
1040 wl1251_warning("Set slot time failed %d", ret);
1041 goto out_sleep;
1042 }
1043 }
1044
1045 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1046 if (bss_conf->use_short_preamble)
1047 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1048 else
1049 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1050 }
1051
1052 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1053 if (bss_conf->use_cts_prot)
1054 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1055 else
1056 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1057 if (ret < 0) {
1058 wl1251_warning("Set ctsprotect failed %d", ret);
1059 goto out_sleep;
1060 }
1061 }
1062
1063 if (changed & BSS_CHANGED_BEACON) {
1064 beacon = ieee80211_beacon_get(hw, vif);
1065 if (!beacon)
1066 goto out_sleep;
1067
1068 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1069 beacon->len);
1070
1071 if (ret < 0) {
1072 dev_kfree_skb(beacon);
1073 goto out_sleep;
1074 }
1075
1076 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1077 beacon->len);
1078
1079 dev_kfree_skb(beacon);
1080
1081 if (ret < 0)
1082 goto out_sleep;
1083
1084 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1085 wl->channel, wl->dtim_period);
1086
1087 if (ret < 0)
1088 goto out_sleep;
1089 }
1090
1091 out_sleep:
1092 wl1251_ps_elp_sleep(wl);
1093
1094 out:
1095 mutex_unlock(&wl->mutex);
1096 }
1097
1098
1099 /* can't be const, mac80211 writes to this */
1100 static struct ieee80211_rate wl1251_rates[] = {
1101 { .bitrate = 10,
1102 .hw_value = 0x1,
1103 .hw_value_short = 0x1, },
1104 { .bitrate = 20,
1105 .hw_value = 0x2,
1106 .hw_value_short = 0x2,
1107 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1108 { .bitrate = 55,
1109 .hw_value = 0x4,
1110 .hw_value_short = 0x4,
1111 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1112 { .bitrate = 110,
1113 .hw_value = 0x20,
1114 .hw_value_short = 0x20,
1115 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1116 { .bitrate = 60,
1117 .hw_value = 0x8,
1118 .hw_value_short = 0x8, },
1119 { .bitrate = 90,
1120 .hw_value = 0x10,
1121 .hw_value_short = 0x10, },
1122 { .bitrate = 120,
1123 .hw_value = 0x40,
1124 .hw_value_short = 0x40, },
1125 { .bitrate = 180,
1126 .hw_value = 0x80,
1127 .hw_value_short = 0x80, },
1128 { .bitrate = 240,
1129 .hw_value = 0x200,
1130 .hw_value_short = 0x200, },
1131 { .bitrate = 360,
1132 .hw_value = 0x400,
1133 .hw_value_short = 0x400, },
1134 { .bitrate = 480,
1135 .hw_value = 0x800,
1136 .hw_value_short = 0x800, },
1137 { .bitrate = 540,
1138 .hw_value = 0x1000,
1139 .hw_value_short = 0x1000, },
1140 };
1141
1142 /* can't be const, mac80211 writes to this */
1143 static struct ieee80211_channel wl1251_channels[] = {
1144 { .hw_value = 1, .center_freq = 2412},
1145 { .hw_value = 2, .center_freq = 2417},
1146 { .hw_value = 3, .center_freq = 2422},
1147 { .hw_value = 4, .center_freq = 2427},
1148 { .hw_value = 5, .center_freq = 2432},
1149 { .hw_value = 6, .center_freq = 2437},
1150 { .hw_value = 7, .center_freq = 2442},
1151 { .hw_value = 8, .center_freq = 2447},
1152 { .hw_value = 9, .center_freq = 2452},
1153 { .hw_value = 10, .center_freq = 2457},
1154 { .hw_value = 11, .center_freq = 2462},
1155 { .hw_value = 12, .center_freq = 2467},
1156 { .hw_value = 13, .center_freq = 2472},
1157 };
1158
1159 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1160 struct ieee80211_vif *vif, u16 queue,
1161 const struct ieee80211_tx_queue_params *params)
1162 {
1163 enum wl1251_acx_ps_scheme ps_scheme;
1164 struct wl1251 *wl = hw->priv;
1165 int ret;
1166
1167 mutex_lock(&wl->mutex);
1168
1169 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1170
1171 ret = wl1251_ps_elp_wakeup(wl);
1172 if (ret < 0)
1173 goto out;
1174
1175 /* mac80211 uses units of 32 usec */
1176 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1177 params->cw_min, params->cw_max,
1178 params->aifs, params->txop * 32);
1179 if (ret < 0)
1180 goto out_sleep;
1181
1182 if (params->uapsd)
1183 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1184 else
1185 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1186
1187 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1188 CHANNEL_TYPE_EDCF,
1189 wl1251_tx_get_queue(queue), ps_scheme,
1190 WL1251_ACX_ACK_POLICY_LEGACY);
1191 if (ret < 0)
1192 goto out_sleep;
1193
1194 out_sleep:
1195 wl1251_ps_elp_sleep(wl);
1196
1197 out:
1198 mutex_unlock(&wl->mutex);
1199
1200 return ret;
1201 }
1202
1203 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1204 struct survey_info *survey)
1205 {
1206 struct wl1251 *wl = hw->priv;
1207 struct ieee80211_conf *conf = &hw->conf;
1208
1209 if (idx != 0)
1210 return -ENOENT;
1211
1212 survey->channel = conf->channel;
1213 survey->filled = SURVEY_INFO_NOISE_DBM;
1214 survey->noise = wl->noise;
1215
1216 return 0;
1217 }
1218
1219 /* can't be const, mac80211 writes to this */
1220 static struct ieee80211_supported_band wl1251_band_2ghz = {
1221 .channels = wl1251_channels,
1222 .n_channels = ARRAY_SIZE(wl1251_channels),
1223 .bitrates = wl1251_rates,
1224 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1225 };
1226
1227 static const struct ieee80211_ops wl1251_ops = {
1228 .start = wl1251_op_start,
1229 .stop = wl1251_op_stop,
1230 .add_interface = wl1251_op_add_interface,
1231 .remove_interface = wl1251_op_remove_interface,
1232 .config = wl1251_op_config,
1233 .configure_filter = wl1251_op_configure_filter,
1234 .tx = wl1251_op_tx,
1235 .set_key = wl1251_op_set_key,
1236 .hw_scan = wl1251_op_hw_scan,
1237 .bss_info_changed = wl1251_op_bss_info_changed,
1238 .set_rts_threshold = wl1251_op_set_rts_threshold,
1239 .conf_tx = wl1251_op_conf_tx,
1240 .get_survey = wl1251_op_get_survey,
1241 };
1242
1243 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1244 {
1245 unsigned long timeout;
1246
1247 wl1251_reg_write32(wl, EE_ADDR, offset);
1248 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1249
1250 /* EE_CTL_READ clears when data is ready */
1251 timeout = jiffies + msecs_to_jiffies(100);
1252 while (1) {
1253 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1254 break;
1255
1256 if (time_after(jiffies, timeout))
1257 return -ETIMEDOUT;
1258
1259 msleep(1);
1260 }
1261
1262 *data = wl1251_reg_read32(wl, EE_DATA);
1263 return 0;
1264 }
1265
1266 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1267 u8 *data, size_t len)
1268 {
1269 size_t i;
1270 int ret;
1271
1272 wl1251_reg_write32(wl, EE_START, 0);
1273
1274 for (i = 0; i < len; i++) {
1275 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1276 if (ret < 0)
1277 return ret;
1278 }
1279
1280 return 0;
1281 }
1282
1283 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1284 {
1285 u8 mac[ETH_ALEN];
1286 int i, ret;
1287
1288 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1289
1290 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1291 if (ret < 0) {
1292 wl1251_warning("failed to read MAC address from EEPROM");
1293 return ret;
1294 }
1295
1296 /* MAC is stored in reverse order */
1297 for (i = 0; i < ETH_ALEN; i++)
1298 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1299
1300 return 0;
1301 }
1302
1303 static int wl1251_register_hw(struct wl1251 *wl)
1304 {
1305 int ret;
1306
1307 if (wl->mac80211_registered)
1308 return 0;
1309
1310 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1311
1312 ret = ieee80211_register_hw(wl->hw);
1313 if (ret < 0) {
1314 wl1251_error("unable to register mac80211 hw: %d", ret);
1315 return ret;
1316 }
1317
1318 wl->mac80211_registered = true;
1319
1320 wl1251_notice("loaded");
1321
1322 return 0;
1323 }
1324
1325 int wl1251_init_ieee80211(struct wl1251 *wl)
1326 {
1327 int ret;
1328
1329 /* The tx descriptor buffer and the TKIP space */
1330 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1331 + WL1251_TKIP_IV_SPACE;
1332
1333 /* unit us */
1334 /* FIXME: find a proper value */
1335 wl->hw->channel_change_time = 10000;
1336
1337 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1338 IEEE80211_HW_SUPPORTS_PS |
1339 IEEE80211_HW_SUPPORTS_UAPSD;
1340
1341 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1342 BIT(NL80211_IFTYPE_ADHOC);
1343 wl->hw->wiphy->max_scan_ssids = 1;
1344 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1345
1346 wl->hw->queues = 4;
1347
1348 if (wl->use_eeprom)
1349 wl1251_read_eeprom_mac(wl);
1350
1351 ret = wl1251_register_hw(wl);
1352 if (ret)
1353 goto out;
1354
1355 wl1251_debugfs_init(wl);
1356 wl1251_notice("initialized");
1357
1358 ret = 0;
1359
1360 out:
1361 return ret;
1362 }
1363 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1364
1365 struct ieee80211_hw *wl1251_alloc_hw(void)
1366 {
1367 struct ieee80211_hw *hw;
1368 struct wl1251 *wl;
1369 int i;
1370 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1371
1372 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1373 if (!hw) {
1374 wl1251_error("could not alloc ieee80211_hw");
1375 return ERR_PTR(-ENOMEM);
1376 }
1377
1378 wl = hw->priv;
1379 memset(wl, 0, sizeof(*wl));
1380
1381 wl->hw = hw;
1382
1383 wl->data_in_count = 0;
1384
1385 skb_queue_head_init(&wl->tx_queue);
1386
1387 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1388 wl->channel = WL1251_DEFAULT_CHANNEL;
1389 wl->scanning = false;
1390 wl->default_key = 0;
1391 wl->listen_int = 1;
1392 wl->rx_counter = 0;
1393 wl->rx_handled = 0;
1394 wl->rx_current_buffer = 0;
1395 wl->rx_last_id = 0;
1396 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1397 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1398 wl->elp = false;
1399 wl->station_mode = STATION_ACTIVE_MODE;
1400 wl->psm_requested = false;
1401 wl->tx_queue_stopped = false;
1402 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1403 wl->rssi_thold = 0;
1404 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1405 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1406 wl->vif = NULL;
1407
1408 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1409 wl->tx_frames[i] = NULL;
1410
1411 wl->next_tx_complete = 0;
1412
1413 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1414 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1415
1416 /*
1417 * In case our MAC address is not correctly set,
1418 * we use a random but Nokia MAC.
1419 */
1420 memcpy(wl->mac_addr, nokia_oui, 3);
1421 get_random_bytes(wl->mac_addr + 3, 3);
1422
1423 wl->state = WL1251_STATE_OFF;
1424 mutex_init(&wl->mutex);
1425
1426 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1427 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1428
1429 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1430 if (!wl->rx_descriptor) {
1431 wl1251_error("could not allocate memory for rx descriptor");
1432 ieee80211_free_hw(hw);
1433 return ERR_PTR(-ENOMEM);
1434 }
1435
1436 return hw;
1437 }
1438 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1439
1440 int wl1251_free_hw(struct wl1251 *wl)
1441 {
1442 ieee80211_unregister_hw(wl->hw);
1443
1444 wl1251_debugfs_exit(wl);
1445
1446 kfree(wl->target_mem_map);
1447 kfree(wl->data_path);
1448 vfree(wl->fw);
1449 wl->fw = NULL;
1450 kfree(wl->nvs);
1451 wl->nvs = NULL;
1452
1453 kfree(wl->rx_descriptor);
1454 wl->rx_descriptor = NULL;
1455
1456 ieee80211_free_hw(wl->hw);
1457
1458 return 0;
1459 }
1460 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1461
1462 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1463 MODULE_LICENSE("GPL");
1464 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1465 MODULE_FIRMWARE(WL1251_FW_NAME);
Linux kernel - Deliverables
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