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ARM: mm: Recreate kernel mappings in early_paging_init()
[linux/fpc-iii.git] / drivers / net / wireless / ti / wl1251 / main.c
blob3291ffa952736ac9f6ac2784c758db39b498d37c
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(
576 conf->chandef.chan->center_freq);
577
578 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
579 channel,
580 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
581 conf->power_level);
582
583 mutex_lock(&wl->mutex);
584
585 ret = wl1251_ps_elp_wakeup(wl);
586 if (ret < 0)
587 goto out;
588
589 if (channel != wl->channel) {
590 wl->channel = channel;
591
592 ret = wl1251_join(wl, wl->bss_type, wl->channel,
593 wl->beacon_int, wl->dtim_period);
594 if (ret < 0)
595 goto out_sleep;
596 }
597
598 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
599 wl1251_debug(DEBUG_PSM, "psm enabled");
600
601 wl->psm_requested = true;
602
603 wl->dtim_period = conf->ps_dtim_period;
604
605 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
606 wl->dtim_period);
607
608 /*
609 * mac80211 enables PSM only if we're already associated.
610 */
611 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
612 if (ret < 0)
613 goto out_sleep;
614 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
615 wl->psm_requested) {
616 wl1251_debug(DEBUG_PSM, "psm disabled");
617
618 wl->psm_requested = false;
619
620 if (wl->station_mode != STATION_ACTIVE_MODE) {
621 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
622 if (ret < 0)
623 goto out_sleep;
624 }
625 }
626
627 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) {
628 if (conf->flags & IEEE80211_CONF_IDLE) {
629 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
630 if (ret < 0)
631 goto out_sleep;
632 } else {
633 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
634 if (ret < 0)
635 goto out_sleep;
636 ret = wl1251_join(wl, wl->bss_type, wl->channel,
637 wl->beacon_int, wl->dtim_period);
638 if (ret < 0)
639 goto out_sleep;
640 }
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_sleep;
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 FIF_PROBE_REQ)
667
668 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
669 unsigned int changed,
670 unsigned int *total,u64 multicast)
671 {
672 struct wl1251 *wl = hw->priv;
673 int ret;
674
675 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
676
677 *total &= WL1251_SUPPORTED_FILTERS;
678 changed &= WL1251_SUPPORTED_FILTERS;
679
680 if (changed == 0)
681 /* no filters which we support changed */
682 return;
683
684 mutex_lock(&wl->mutex);
685
686 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
687 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
688
689 if (*total & FIF_PROMISC_IN_BSS) {
690 wl->rx_config |= CFG_BSSID_FILTER_EN;
691 wl->rx_config |= CFG_RX_ALL_GOOD;
692 }
693 if (*total & FIF_ALLMULTI)
694 /*
695 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
696 * all multicast frames
697 */
698 wl->rx_config &= ~CFG_MC_FILTER_EN;
699 if (*total & FIF_FCSFAIL)
700 wl->rx_filter |= CFG_RX_FCS_ERROR;
701 if (*total & FIF_BCN_PRBRESP_PROMISC) {
702 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
703 wl->rx_config &= ~CFG_SSID_FILTER_EN;
704 }
705 if (*total & FIF_CONTROL)
706 wl->rx_filter |= CFG_RX_CTL_EN;
707 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
708 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
709 if (*total & FIF_PROBE_REQ)
710 wl->rx_filter |= CFG_RX_PREQ_EN;
711
712 if (wl->state == WL1251_STATE_OFF)
713 goto out;
714
715 ret = wl1251_ps_elp_wakeup(wl);
716 if (ret < 0)
717 goto out;
718
719 /* send filters to firmware */
720 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
721
722 wl1251_ps_elp_sleep(wl);
723
724 out:
725 mutex_unlock(&wl->mutex);
726 }
727
728 /* HW encryption */
729 static int wl1251_set_key_type(struct wl1251 *wl,
730 struct wl1251_cmd_set_keys *key,
731 enum set_key_cmd cmd,
732 struct ieee80211_key_conf *mac80211_key,
733 const u8 *addr)
734 {
735 switch (mac80211_key->cipher) {
736 case WLAN_CIPHER_SUITE_WEP40:
737 case WLAN_CIPHER_SUITE_WEP104:
738 if (is_broadcast_ether_addr(addr))
739 key->key_type = KEY_WEP_DEFAULT;
740 else
741 key->key_type = KEY_WEP_ADDR;
742
743 mac80211_key->hw_key_idx = mac80211_key->keyidx;
744 break;
745 case WLAN_CIPHER_SUITE_TKIP:
746 if (is_broadcast_ether_addr(addr))
747 key->key_type = KEY_TKIP_MIC_GROUP;
748 else
749 key->key_type = KEY_TKIP_MIC_PAIRWISE;
750
751 mac80211_key->hw_key_idx = mac80211_key->keyidx;
752 break;
753 case WLAN_CIPHER_SUITE_CCMP:
754 if (is_broadcast_ether_addr(addr))
755 key->key_type = KEY_AES_GROUP;
756 else
757 key->key_type = KEY_AES_PAIRWISE;
758 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
759 break;
760 default:
761 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
762 return -EOPNOTSUPP;
763 }
764
765 return 0;
766 }
767
768 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
769 struct ieee80211_vif *vif,
770 struct ieee80211_sta *sta,
771 struct ieee80211_key_conf *key)
772 {
773 struct wl1251 *wl = hw->priv;
774 struct wl1251_cmd_set_keys *wl_cmd;
775 const u8 *addr;
776 int ret;
777
778 static const u8 bcast_addr[ETH_ALEN] =
779 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
780
781 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
782
783 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
784 if (!wl_cmd) {
785 ret = -ENOMEM;
786 goto out;
787 }
788
789 addr = sta ? sta->addr : bcast_addr;
790
791 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
792 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
793 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
794 key->cipher, key->keyidx, key->keylen, key->flags);
795 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
796
797 if (is_zero_ether_addr(addr)) {
798 /* We dont support TX only encryption */
799 ret = -EOPNOTSUPP;
800 goto out;
801 }
802
803 mutex_lock(&wl->mutex);
804
805 ret = wl1251_ps_elp_wakeup(wl);
806 if (ret < 0)
807 goto out_unlock;
808
809 switch (cmd) {
810 case SET_KEY:
811 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
812 break;
813 case DISABLE_KEY:
814 wl_cmd->key_action = KEY_REMOVE;
815 break;
816 default:
817 wl1251_error("Unsupported key cmd 0x%x", cmd);
818 break;
819 }
820
821 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
822 if (ret < 0) {
823 wl1251_error("Set KEY type failed");
824 goto out_sleep;
825 }
826
827 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
828 memcpy(wl_cmd->addr, addr, ETH_ALEN);
829
830 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
831 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
832 /*
833 * We get the key in the following form:
834 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
835 * but the target is expecting:
836 * TKIP - RX MIC - TX MIC
837 */
838 memcpy(wl_cmd->key, key->key, 16);
839 memcpy(wl_cmd->key + 16, key->key + 24, 8);
840 memcpy(wl_cmd->key + 24, key->key + 16, 8);
841
842 } else {
843 memcpy(wl_cmd->key, key->key, key->keylen);
844 }
845 wl_cmd->key_size = key->keylen;
846
847 wl_cmd->id = key->keyidx;
848 wl_cmd->ssid_profile = 0;
849
850 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
851
852 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
853 if (ret < 0) {
854 wl1251_warning("could not set keys");
855 goto out_sleep;
856 }
857
858 out_sleep:
859 wl1251_ps_elp_sleep(wl);
860
861 out_unlock:
862 mutex_unlock(&wl->mutex);
863
864 out:
865 kfree(wl_cmd);
866
867 return ret;
868 }
869
870 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
871 struct ieee80211_vif *vif,
872 struct cfg80211_scan_request *req)
873 {
874 struct wl1251 *wl = hw->priv;
875 struct sk_buff *skb;
876 size_t ssid_len = 0;
877 u8 *ssid = NULL;
878 int ret;
879
880 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
881
882 if (req->n_ssids) {
883 ssid = req->ssids[0].ssid;
884 ssid_len = req->ssids[0].ssid_len;
885 }
886
887 mutex_lock(&wl->mutex);
888
889 if (wl->scanning) {
890 wl1251_debug(DEBUG_SCAN, "scan already in progress");
891 ret = -EINVAL;
892 goto out;
893 }
894
895 ret = wl1251_ps_elp_wakeup(wl);
896 if (ret < 0)
897 goto out;
898
899 if (hw->conf.flags & IEEE80211_CONF_IDLE) {
900 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
901 if (ret < 0)
902 goto out_sleep;
903 ret = wl1251_join(wl, wl->bss_type, wl->channel,
904 wl->beacon_int, wl->dtim_period);
905 if (ret < 0)
906 goto out_sleep;
907 }
908
909 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
910 req->ie_len);
911 if (!skb) {
912 ret = -ENOMEM;
913 goto out_idle;
914 }
915 if (req->ie_len)
916 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
917
918 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
919 skb->len);
920 dev_kfree_skb(skb);
921 if (ret < 0)
922 goto out_idle;
923
924 ret = wl1251_cmd_trigger_scan_to(wl, 0);
925 if (ret < 0)
926 goto out_idle;
927
928 wl->scanning = true;
929
930 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
931 req->n_channels, WL1251_SCAN_NUM_PROBES);
932 if (ret < 0) {
933 wl->scanning = false;
934 goto out_idle;
935 }
936 goto out_sleep;
937
938 out_idle:
939 if (hw->conf.flags & IEEE80211_CONF_IDLE)
940 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
941 out_sleep:
942 wl1251_ps_elp_sleep(wl);
943
944 out:
945 mutex_unlock(&wl->mutex);
946
947 return ret;
948 }
949
950 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
951 {
952 struct wl1251 *wl = hw->priv;
953 int ret;
954
955 mutex_lock(&wl->mutex);
956
957 ret = wl1251_ps_elp_wakeup(wl);
958 if (ret < 0)
959 goto out;
960
961 ret = wl1251_acx_rts_threshold(wl, (u16) value);
962 if (ret < 0)
963 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
964
965 wl1251_ps_elp_sleep(wl);
966
967 out:
968 mutex_unlock(&wl->mutex);
969
970 return ret;
971 }
972
973 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
974 struct ieee80211_vif *vif,
975 struct ieee80211_bss_conf *bss_conf,
976 u32 changed)
977 {
978 struct wl1251 *wl = hw->priv;
979 struct sk_buff *beacon, *skb;
980 int ret;
981
982 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
983
984 mutex_lock(&wl->mutex);
985
986 ret = wl1251_ps_elp_wakeup(wl);
987 if (ret < 0)
988 goto out;
989
990 if (changed & BSS_CHANGED_CQM) {
991 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
992 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
993 WL1251_DEFAULT_LOW_RSSI_DEPTH,
994 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
995 if (ret < 0)
996 goto out;
997 wl->rssi_thold = bss_conf->cqm_rssi_thold;
998 }
999
1000 if (changed & BSS_CHANGED_BSSID) {
1001 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1002
1003 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1004 if (!skb)
1005 goto out_sleep;
1006
1007 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1008 skb->data, skb->len);
1009 dev_kfree_skb(skb);
1010 if (ret < 0)
1011 goto out_sleep;
1012
1013 ret = wl1251_build_qos_null_data(wl);
1014 if (ret < 0)
1015 goto out;
1016
1017 if (wl->bss_type != BSS_TYPE_IBSS) {
1018 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1019 wl->beacon_int, wl->dtim_period);
1020 if (ret < 0)
1021 goto out_sleep;
1022 }
1023 }
1024
1025 if (changed & BSS_CHANGED_ASSOC) {
1026 if (bss_conf->assoc) {
1027 wl->beacon_int = bss_conf->beacon_int;
1028
1029 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1030 if (!skb)
1031 goto out_sleep;
1032
1033 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1034 skb->data,
1035 skb->len);
1036 dev_kfree_skb(skb);
1037 if (ret < 0)
1038 goto out_sleep;
1039
1040 ret = wl1251_acx_aid(wl, bss_conf->aid);
1041 if (ret < 0)
1042 goto out_sleep;
1043 } else {
1044 /* use defaults when not associated */
1045 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1046 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1047 }
1048 }
1049 if (changed & BSS_CHANGED_ERP_SLOT) {
1050 if (bss_conf->use_short_slot)
1051 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1052 else
1053 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1054 if (ret < 0) {
1055 wl1251_warning("Set slot time failed %d", ret);
1056 goto out_sleep;
1057 }
1058 }
1059
1060 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1061 if (bss_conf->use_short_preamble)
1062 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1063 else
1064 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1065 }
1066
1067 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1068 if (bss_conf->use_cts_prot)
1069 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1070 else
1071 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1072 if (ret < 0) {
1073 wl1251_warning("Set ctsprotect failed %d", ret);
1074 goto out_sleep;
1075 }
1076 }
1077
1078 if (changed & BSS_CHANGED_BEACON) {
1079 beacon = ieee80211_beacon_get(hw, vif);
1080 if (!beacon)
1081 goto out_sleep;
1082
1083 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1084 beacon->len);
1085
1086 if (ret < 0) {
1087 dev_kfree_skb(beacon);
1088 goto out_sleep;
1089 }
1090
1091 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1092 beacon->len);
1093
1094 dev_kfree_skb(beacon);
1095
1096 if (ret < 0)
1097 goto out_sleep;
1098
1099 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1100 wl->channel, wl->dtim_period);
1101
1102 if (ret < 0)
1103 goto out_sleep;
1104 }
1105
1106 out_sleep:
1107 wl1251_ps_elp_sleep(wl);
1108
1109 out:
1110 mutex_unlock(&wl->mutex);
1111 }
1112
1113
1114 /* can't be const, mac80211 writes to this */
1115 static struct ieee80211_rate wl1251_rates[] = {
1116 { .bitrate = 10,
1117 .hw_value = 0x1,
1118 .hw_value_short = 0x1, },
1119 { .bitrate = 20,
1120 .hw_value = 0x2,
1121 .hw_value_short = 0x2,
1122 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1123 { .bitrate = 55,
1124 .hw_value = 0x4,
1125 .hw_value_short = 0x4,
1126 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1127 { .bitrate = 110,
1128 .hw_value = 0x20,
1129 .hw_value_short = 0x20,
1130 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1131 { .bitrate = 60,
1132 .hw_value = 0x8,
1133 .hw_value_short = 0x8, },
1134 { .bitrate = 90,
1135 .hw_value = 0x10,
1136 .hw_value_short = 0x10, },
1137 { .bitrate = 120,
1138 .hw_value = 0x40,
1139 .hw_value_short = 0x40, },
1140 { .bitrate = 180,
1141 .hw_value = 0x80,
1142 .hw_value_short = 0x80, },
1143 { .bitrate = 240,
1144 .hw_value = 0x200,
1145 .hw_value_short = 0x200, },
1146 { .bitrate = 360,
1147 .hw_value = 0x400,
1148 .hw_value_short = 0x400, },
1149 { .bitrate = 480,
1150 .hw_value = 0x800,
1151 .hw_value_short = 0x800, },
1152 { .bitrate = 540,
1153 .hw_value = 0x1000,
1154 .hw_value_short = 0x1000, },
1155 };
1156
1157 /* can't be const, mac80211 writes to this */
1158 static struct ieee80211_channel wl1251_channels[] = {
1159 { .hw_value = 1, .center_freq = 2412},
1160 { .hw_value = 2, .center_freq = 2417},
1161 { .hw_value = 3, .center_freq = 2422},
1162 { .hw_value = 4, .center_freq = 2427},
1163 { .hw_value = 5, .center_freq = 2432},
1164 { .hw_value = 6, .center_freq = 2437},
1165 { .hw_value = 7, .center_freq = 2442},
1166 { .hw_value = 8, .center_freq = 2447},
1167 { .hw_value = 9, .center_freq = 2452},
1168 { .hw_value = 10, .center_freq = 2457},
1169 { .hw_value = 11, .center_freq = 2462},
1170 { .hw_value = 12, .center_freq = 2467},
1171 { .hw_value = 13, .center_freq = 2472},
1172 };
1173
1174 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1175 struct ieee80211_vif *vif, u16 queue,
1176 const struct ieee80211_tx_queue_params *params)
1177 {
1178 enum wl1251_acx_ps_scheme ps_scheme;
1179 struct wl1251 *wl = hw->priv;
1180 int ret;
1181
1182 mutex_lock(&wl->mutex);
1183
1184 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1185
1186 ret = wl1251_ps_elp_wakeup(wl);
1187 if (ret < 0)
1188 goto out;
1189
1190 /* mac80211 uses units of 32 usec */
1191 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1192 params->cw_min, params->cw_max,
1193 params->aifs, params->txop * 32);
1194 if (ret < 0)
1195 goto out_sleep;
1196
1197 if (params->uapsd)
1198 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1199 else
1200 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1201
1202 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1203 CHANNEL_TYPE_EDCF,
1204 wl1251_tx_get_queue(queue), ps_scheme,
1205 WL1251_ACX_ACK_POLICY_LEGACY);
1206 if (ret < 0)
1207 goto out_sleep;
1208
1209 out_sleep:
1210 wl1251_ps_elp_sleep(wl);
1211
1212 out:
1213 mutex_unlock(&wl->mutex);
1214
1215 return ret;
1216 }
1217
1218 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1219 struct survey_info *survey)
1220 {
1221 struct wl1251 *wl = hw->priv;
1222 struct ieee80211_conf *conf = &hw->conf;
1223
1224 if (idx != 0)
1225 return -ENOENT;
1226
1227 survey->channel = conf->chandef.chan;
1228 survey->filled = SURVEY_INFO_NOISE_DBM;
1229 survey->noise = wl->noise;
1230
1231 return 0;
1232 }
1233
1234 /* can't be const, mac80211 writes to this */
1235 static struct ieee80211_supported_band wl1251_band_2ghz = {
1236 .channels = wl1251_channels,
1237 .n_channels = ARRAY_SIZE(wl1251_channels),
1238 .bitrates = wl1251_rates,
1239 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1240 };
1241
1242 static const struct ieee80211_ops wl1251_ops = {
1243 .start = wl1251_op_start,
1244 .stop = wl1251_op_stop,
1245 .add_interface = wl1251_op_add_interface,
1246 .remove_interface = wl1251_op_remove_interface,
1247 .config = wl1251_op_config,
1248 .configure_filter = wl1251_op_configure_filter,
1249 .tx = wl1251_op_tx,
1250 .set_key = wl1251_op_set_key,
1251 .hw_scan = wl1251_op_hw_scan,
1252 .bss_info_changed = wl1251_op_bss_info_changed,
1253 .set_rts_threshold = wl1251_op_set_rts_threshold,
1254 .conf_tx = wl1251_op_conf_tx,
1255 .get_survey = wl1251_op_get_survey,
1256 };
1257
1258 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1259 {
1260 unsigned long timeout;
1261
1262 wl1251_reg_write32(wl, EE_ADDR, offset);
1263 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1264
1265 /* EE_CTL_READ clears when data is ready */
1266 timeout = jiffies + msecs_to_jiffies(100);
1267 while (1) {
1268 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1269 break;
1270
1271 if (time_after(jiffies, timeout))
1272 return -ETIMEDOUT;
1273
1274 msleep(1);
1275 }
1276
1277 *data = wl1251_reg_read32(wl, EE_DATA);
1278 return 0;
1279 }
1280
1281 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1282 u8 *data, size_t len)
1283 {
1284 size_t i;
1285 int ret;
1286
1287 wl1251_reg_write32(wl, EE_START, 0);
1288
1289 for (i = 0; i < len; i++) {
1290 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1291 if (ret < 0)
1292 return ret;
1293 }
1294
1295 return 0;
1296 }
1297
1298 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1299 {
1300 u8 mac[ETH_ALEN];
1301 int i, ret;
1302
1303 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1304
1305 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1306 if (ret < 0) {
1307 wl1251_warning("failed to read MAC address from EEPROM");
1308 return ret;
1309 }
1310
1311 /* MAC is stored in reverse order */
1312 for (i = 0; i < ETH_ALEN; i++)
1313 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1314
1315 return 0;
1316 }
1317
1318 static int wl1251_register_hw(struct wl1251 *wl)
1319 {
1320 int ret;
1321
1322 if (wl->mac80211_registered)
1323 return 0;
1324
1325 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1326
1327 ret = ieee80211_register_hw(wl->hw);
1328 if (ret < 0) {
1329 wl1251_error("unable to register mac80211 hw: %d", ret);
1330 return ret;
1331 }
1332
1333 wl->mac80211_registered = true;
1334
1335 wl1251_notice("loaded");
1336
1337 return 0;
1338 }
1339
1340 int wl1251_init_ieee80211(struct wl1251 *wl)
1341 {
1342 int ret;
1343
1344 /* The tx descriptor buffer and the TKIP space */
1345 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1346 + WL1251_TKIP_IV_SPACE;
1347
1348 /* unit us */
1349 /* FIXME: find a proper value */
1350 wl->hw->channel_change_time = 10000;
1351
1352 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1353 IEEE80211_HW_SUPPORTS_PS |
1354 IEEE80211_HW_SUPPORTS_UAPSD;
1355
1356 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1357 BIT(NL80211_IFTYPE_ADHOC);
1358 wl->hw->wiphy->max_scan_ssids = 1;
1359 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1360
1361 wl->hw->queues = 4;
1362
1363 if (wl->use_eeprom)
1364 wl1251_read_eeprom_mac(wl);
1365
1366 ret = wl1251_register_hw(wl);
1367 if (ret)
1368 goto out;
1369
1370 wl1251_debugfs_init(wl);
1371 wl1251_notice("initialized");
1372
1373 ret = 0;
1374
1375 out:
1376 return ret;
1377 }
1378 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1379
1380 struct ieee80211_hw *wl1251_alloc_hw(void)
1381 {
1382 struct ieee80211_hw *hw;
1383 struct wl1251 *wl;
1384 int i;
1385 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1386
1387 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1388 if (!hw) {
1389 wl1251_error("could not alloc ieee80211_hw");
1390 return ERR_PTR(-ENOMEM);
1391 }
1392
1393 wl = hw->priv;
1394 memset(wl, 0, sizeof(*wl));
1395
1396 wl->hw = hw;
1397
1398 wl->data_in_count = 0;
1399
1400 skb_queue_head_init(&wl->tx_queue);
1401
1402 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1403 wl->channel = WL1251_DEFAULT_CHANNEL;
1404 wl->scanning = false;
1405 wl->default_key = 0;
1406 wl->listen_int = 1;
1407 wl->rx_counter = 0;
1408 wl->rx_handled = 0;
1409 wl->rx_current_buffer = 0;
1410 wl->rx_last_id = 0;
1411 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1412 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1413 wl->elp = false;
1414 wl->station_mode = STATION_ACTIVE_MODE;
1415 wl->psm_requested = false;
1416 wl->tx_queue_stopped = false;
1417 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1418 wl->rssi_thold = 0;
1419 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1420 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1421 wl->vif = NULL;
1422
1423 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1424 wl->tx_frames[i] = NULL;
1425
1426 wl->next_tx_complete = 0;
1427
1428 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1429 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1430
1431 /*
1432 * In case our MAC address is not correctly set,
1433 * we use a random but Nokia MAC.
1434 */
1435 memcpy(wl->mac_addr, nokia_oui, 3);
1436 get_random_bytes(wl->mac_addr + 3, 3);
1437
1438 wl->state = WL1251_STATE_OFF;
1439 mutex_init(&wl->mutex);
1440
1441 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1442 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1443
1444 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1445 if (!wl->rx_descriptor) {
1446 wl1251_error("could not allocate memory for rx descriptor");
1447 ieee80211_free_hw(hw);
1448 return ERR_PTR(-ENOMEM);
1449 }
1450
1451 return hw;
1452 }
1453 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1454
1455 int wl1251_free_hw(struct wl1251 *wl)
1456 {
1457 ieee80211_unregister_hw(wl->hw);
1458
1459 wl1251_debugfs_exit(wl);
1460
1461 kfree(wl->target_mem_map);
1462 kfree(wl->data_path);
1463 vfree(wl->fw);
1464 wl->fw = NULL;
1465 kfree(wl->nvs);
1466 wl->nvs = NULL;
1467
1468 kfree(wl->rx_descriptor);
1469 wl->rx_descriptor = NULL;
1470
1471 ieee80211_free_hw(wl->hw);
1472
1473 return 0;
1474 }
1475 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1476
1477 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1478 MODULE_LICENSE("GPL");
1479 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1480 MODULE_FIRMWARE(WL1251_FW_NAME);
Linux with added FPC-III support