wl1251: fix error handling in wl1251_op_config()
[linux-2.6.git] / drivers / net / wireless / wl12xx / wl1251_main.c
1 /*
2  * This file is part of wl1251
3  *
4  * Copyright (C) 2008-2009 Nokia Corporation
5  *
6  * Contact: Kalle Valo <kalle.valo@nokia.com>
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * version 2 as published by the Free Software Foundation.
11  *
12  * This program is distributed in the hope that it will be useful, but
13  * WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20  * 02110-1301 USA
21  *
22  */
23
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/firmware.h>
27 #include <linux/delay.h>
28 #include <linux/irq.h>
29 #include <linux/crc32.h>
30 #include <linux/etherdevice.h>
31 #include <linux/vmalloc.h>
32
33 #include "wl1251.h"
34 #include "wl12xx_80211.h"
35 #include "wl1251_reg.h"
36 #include "wl1251_io.h"
37 #include "wl1251_cmd.h"
38 #include "wl1251_event.h"
39 #include "wl1251_tx.h"
40 #include "wl1251_rx.h"
41 #include "wl1251_ps.h"
42 #include "wl1251_init.h"
43 #include "wl1251_debugfs.h"
44 #include "wl1251_boot.h"
45
46 void wl1251_enable_interrupts(struct wl1251 *wl)
47 {
48         wl->if_ops->enable_irq(wl);
49 }
50
51 void wl1251_disable_interrupts(struct wl1251 *wl)
52 {
53         wl->if_ops->disable_irq(wl);
54 }
55
56 static void wl1251_power_off(struct wl1251 *wl)
57 {
58         wl->set_power(false);
59 }
60
61 static void wl1251_power_on(struct wl1251 *wl)
62 {
63         wl->set_power(true);
64 }
65
66 static int wl1251_fetch_firmware(struct wl1251 *wl)
67 {
68         const struct firmware *fw;
69         struct device *dev = wiphy_dev(wl->hw->wiphy);
70         int ret;
71
72         ret = request_firmware(&fw, WL1251_FW_NAME, dev);
73
74         if (ret < 0) {
75                 wl1251_error("could not get firmware: %d", ret);
76                 return ret;
77         }
78
79         if (fw->size % 4) {
80                 wl1251_error("firmware size is not multiple of 32 bits: %zu",
81                              fw->size);
82                 ret = -EILSEQ;
83                 goto out;
84         }
85
86         wl->fw_len = fw->size;
87         wl->fw = vmalloc(wl->fw_len);
88
89         if (!wl->fw) {
90                 wl1251_error("could not allocate memory for the firmware");
91                 ret = -ENOMEM;
92                 goto out;
93         }
94
95         memcpy(wl->fw, fw->data, wl->fw_len);
96
97         ret = 0;
98
99 out:
100         release_firmware(fw);
101
102         return ret;
103 }
104
105 static int wl1251_fetch_nvs(struct wl1251 *wl)
106 {
107         const struct firmware *fw;
108         struct device *dev = wiphy_dev(wl->hw->wiphy);
109         int ret;
110
111         ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
112
113         if (ret < 0) {
114                 wl1251_error("could not get nvs file: %d", ret);
115                 return ret;
116         }
117
118         if (fw->size % 4) {
119                 wl1251_error("nvs size is not multiple of 32 bits: %zu",
120                              fw->size);
121                 ret = -EILSEQ;
122                 goto out;
123         }
124
125         wl->nvs_len = fw->size;
126         wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
127
128         if (!wl->nvs) {
129                 wl1251_error("could not allocate memory for the nvs file");
130                 ret = -ENOMEM;
131                 goto out;
132         }
133
134         memcpy(wl->nvs, fw->data, wl->nvs_len);
135
136         ret = 0;
137
138 out:
139         release_firmware(fw);
140
141         return ret;
142 }
143
144 static void wl1251_fw_wakeup(struct wl1251 *wl)
145 {
146         u32 elp_reg;
147
148         elp_reg = ELPCTRL_WAKE_UP;
149         wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
150         elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
151
152         if (!(elp_reg & ELPCTRL_WLAN_READY))
153                 wl1251_warning("WLAN not ready");
154 }
155
156 static int wl1251_chip_wakeup(struct wl1251 *wl)
157 {
158         int ret = 0;
159
160         wl1251_power_on(wl);
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         /* No NVS from netlink, try to get it from the filesystem */
205         if (wl->nvs == NULL) {
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_ACX_INTR_EVENT_B)) {
299                         wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
300                                      intr);
301                         if (intr & WL1251_ACX_INTR_EVENT_A)
302                                 wl1251_event_handle(wl, 0);
303                         else
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         /*
344          * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
345          * locking we just sleep instead, for now
346          */
347         msleep(10);
348
349 out:
350         return ret;
351 }
352
353 static void wl1251_filter_work(struct work_struct *work)
354 {
355         struct wl1251 *wl =
356                 container_of(work, struct wl1251, filter_work);
357         int ret;
358
359         mutex_lock(&wl->mutex);
360
361         if (wl->state == WL1251_STATE_OFF)
362                 goto out;
363
364         ret = wl1251_ps_elp_wakeup(wl);
365         if (ret < 0)
366                 goto out;
367
368         ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
369                           wl->dtim_period);
370         if (ret < 0)
371                 goto out_sleep;
372
373 out_sleep:
374         wl1251_ps_elp_sleep(wl);
375
376 out:
377         mutex_unlock(&wl->mutex);
378 }
379
380 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
381 {
382         struct wl1251 *wl = hw->priv;
383
384         skb_queue_tail(&wl->tx_queue, skb);
385
386         /*
387          * The chip specific setup must run before the first TX packet -
388          * before that, the tx_work will not be initialized!
389          */
390
391         ieee80211_queue_work(wl->hw, &wl->tx_work);
392
393         /*
394          * The workqueue is slow to process the tx_queue and we need stop
395          * the queue here, otherwise the queue will get too long.
396          */
397         if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
398                 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
399                 ieee80211_stop_queues(wl->hw);
400
401                 /*
402                  * FIXME: this is racy, the variable is not properly
403                  * protected. Maybe fix this by removing the stupid
404                  * variable altogether and checking the real queue state?
405                  */
406                 wl->tx_queue_stopped = true;
407         }
408
409         return NETDEV_TX_OK;
410 }
411
412 static int wl1251_op_start(struct ieee80211_hw *hw)
413 {
414         struct wl1251 *wl = hw->priv;
415         int ret = 0;
416
417         wl1251_debug(DEBUG_MAC80211, "mac80211 start");
418
419         mutex_lock(&wl->mutex);
420
421         if (wl->state != WL1251_STATE_OFF) {
422                 wl1251_error("cannot start because not in off state: %d",
423                              wl->state);
424                 ret = -EBUSY;
425                 goto out;
426         }
427
428         ret = wl1251_chip_wakeup(wl);
429         if (ret < 0)
430                 goto out;
431
432         ret = wl1251_boot(wl);
433         if (ret < 0)
434                 goto out;
435
436         ret = wl1251_hw_init(wl);
437         if (ret < 0)
438                 goto out;
439
440         ret = wl1251_acx_station_id(wl);
441         if (ret < 0)
442                 goto out;
443
444         wl->state = WL1251_STATE_ON;
445
446         wl1251_info("firmware booted (%s)", wl->fw_ver);
447
448 out:
449         if (ret < 0)
450                 wl1251_power_off(wl);
451
452         mutex_unlock(&wl->mutex);
453
454         return ret;
455 }
456
457 static void wl1251_op_stop(struct ieee80211_hw *hw)
458 {
459         struct wl1251 *wl = hw->priv;
460
461         wl1251_info("down");
462
463         wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
464
465         mutex_lock(&wl->mutex);
466
467         WARN_ON(wl->state != WL1251_STATE_ON);
468
469         if (wl->scanning) {
470                 mutex_unlock(&wl->mutex);
471                 ieee80211_scan_completed(wl->hw, true);
472                 mutex_lock(&wl->mutex);
473                 wl->scanning = false;
474         }
475
476         wl->state = WL1251_STATE_OFF;
477
478         wl1251_disable_interrupts(wl);
479
480         mutex_unlock(&wl->mutex);
481
482         cancel_work_sync(&wl->irq_work);
483         cancel_work_sync(&wl->tx_work);
484         cancel_work_sync(&wl->filter_work);
485
486         mutex_lock(&wl->mutex);
487
488         /* let's notify MAC80211 about the remaining pending TX frames */
489         wl1251_tx_flush(wl);
490         wl1251_power_off(wl);
491
492         memset(wl->bssid, 0, ETH_ALEN);
493         wl->listen_int = 1;
494         wl->bss_type = MAX_BSS_TYPE;
495
496         wl->data_in_count = 0;
497         wl->rx_counter = 0;
498         wl->rx_handled = 0;
499         wl->rx_current_buffer = 0;
500         wl->rx_last_id = 0;
501         wl->next_tx_complete = 0;
502         wl->elp = false;
503         wl->psm = 0;
504         wl->tx_queue_stopped = false;
505         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
506         wl->channel = WL1251_DEFAULT_CHANNEL;
507
508         wl1251_debugfs_reset(wl);
509
510         mutex_unlock(&wl->mutex);
511 }
512
513 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
514                                    struct ieee80211_if_init_conf *conf)
515 {
516         struct wl1251 *wl = hw->priv;
517         int ret = 0;
518
519         wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
520                      conf->type, conf->mac_addr);
521
522         mutex_lock(&wl->mutex);
523         if (wl->vif) {
524                 ret = -EBUSY;
525                 goto out;
526         }
527
528         wl->vif = conf->vif;
529
530         switch (conf->type) {
531         case NL80211_IFTYPE_STATION:
532                 wl->bss_type = BSS_TYPE_STA_BSS;
533                 break;
534         case NL80211_IFTYPE_ADHOC:
535                 wl->bss_type = BSS_TYPE_IBSS;
536                 break;
537         default:
538                 ret = -EOPNOTSUPP;
539                 goto out;
540         }
541
542         if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
543                 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
544                 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
545                 ret = wl1251_acx_station_id(wl);
546                 if (ret < 0)
547                         goto out;
548         }
549
550 out:
551         mutex_unlock(&wl->mutex);
552         return ret;
553 }
554
555 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
556                                          struct ieee80211_if_init_conf *conf)
557 {
558         struct wl1251 *wl = hw->priv;
559
560         mutex_lock(&wl->mutex);
561         wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
562         wl->vif = NULL;
563         mutex_unlock(&wl->mutex);
564 }
565
566 static int wl1251_build_null_data(struct wl1251 *wl)
567 {
568         struct wl12xx_null_data_template template;
569
570         if (!is_zero_ether_addr(wl->bssid)) {
571                 memcpy(template.header.da, wl->bssid, ETH_ALEN);
572                 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
573         } else {
574                 memset(template.header.da, 0xff, ETH_ALEN);
575                 memset(template.header.bssid, 0xff, ETH_ALEN);
576         }
577
578         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
579         template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
580                                                 IEEE80211_STYPE_NULLFUNC |
581                                                 IEEE80211_FCTL_TODS);
582
583         return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
584                                        sizeof(template));
585
586 }
587
588 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
589 {
590         struct wl12xx_ps_poll_template template;
591
592         memcpy(template.bssid, wl->bssid, ETH_ALEN);
593         memcpy(template.ta, wl->mac_addr, ETH_ALEN);
594
595         /* aid in PS-Poll has its two MSBs each set to 1 */
596         template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
597
598         template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
599
600         return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
601                                        sizeof(template));
602
603 }
604
605 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
606 {
607         struct wl1251 *wl = hw->priv;
608         struct ieee80211_conf *conf = &hw->conf;
609         int channel, ret = 0;
610
611         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
612
613         wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
614                      channel,
615                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
616                      conf->power_level);
617
618         mutex_lock(&wl->mutex);
619
620         ret = wl1251_ps_elp_wakeup(wl);
621         if (ret < 0)
622                 goto out;
623
624         if (channel != wl->channel) {
625                 wl->channel = channel;
626
627                 ret = wl1251_join(wl, wl->bss_type, wl->channel,
628                                   wl->beacon_int, wl->dtim_period);
629                 if (ret < 0)
630                         goto out_sleep;
631         }
632
633         ret = wl1251_build_null_data(wl);
634         if (ret < 0)
635                 goto out_sleep;
636
637         if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
638                 wl1251_debug(DEBUG_PSM, "psm enabled");
639
640                 wl->psm_requested = true;
641
642                 /*
643                  * We enter PSM only if we're already associated.
644                  * If we're not, we'll enter it when joining an SSID,
645                  * through the bss_info_changed() hook.
646                  */
647                 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
648                 if (ret < 0)
649                         goto out_sleep;
650         } else if (!(conf->flags & IEEE80211_CONF_PS) &&
651                    wl->psm_requested) {
652                 wl1251_debug(DEBUG_PSM, "psm disabled");
653
654                 wl->psm_requested = false;
655
656                 if (wl->psm) {
657                         ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
658                         if (ret < 0)
659                                 goto out_sleep;
660                 }
661         }
662
663         if (conf->power_level != wl->power_level) {
664                 ret = wl1251_acx_tx_power(wl, conf->power_level);
665                 if (ret < 0)
666                         goto out_sleep;
667
668                 wl->power_level = conf->power_level;
669         }
670
671 out_sleep:
672         wl1251_ps_elp_sleep(wl);
673
674 out:
675         mutex_unlock(&wl->mutex);
676
677         return ret;
678 }
679
680 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
681                                   FIF_ALLMULTI | \
682                                   FIF_FCSFAIL | \
683                                   FIF_BCN_PRBRESP_PROMISC | \
684                                   FIF_CONTROL | \
685                                   FIF_OTHER_BSS)
686
687 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
688                                        unsigned int changed,
689                                        unsigned int *total,u64 multicast)
690 {
691         struct wl1251 *wl = hw->priv;
692
693         wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
694
695         *total &= WL1251_SUPPORTED_FILTERS;
696         changed &= WL1251_SUPPORTED_FILTERS;
697
698         if (changed == 0)
699                 /* no filters which we support changed */
700                 return;
701
702         /* FIXME: wl->rx_config and wl->rx_filter are not protected */
703
704         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
705         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
706
707         if (*total & FIF_PROMISC_IN_BSS) {
708                 wl->rx_config |= CFG_BSSID_FILTER_EN;
709                 wl->rx_config |= CFG_RX_ALL_GOOD;
710         }
711         if (*total & FIF_ALLMULTI)
712                 /*
713                  * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
714                  * all multicast frames
715                  */
716                 wl->rx_config &= ~CFG_MC_FILTER_EN;
717         if (*total & FIF_FCSFAIL)
718                 wl->rx_filter |= CFG_RX_FCS_ERROR;
719         if (*total & FIF_BCN_PRBRESP_PROMISC) {
720                 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
721                 wl->rx_config &= ~CFG_SSID_FILTER_EN;
722         }
723         if (*total & FIF_CONTROL)
724                 wl->rx_filter |= CFG_RX_CTL_EN;
725         if (*total & FIF_OTHER_BSS)
726                 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
727
728         /*
729          * FIXME: workqueues need to be properly cancelled on stop(), for
730          * now let's just disable changing the filter settings. They will
731          * be updated any on config().
732          */
733         /* schedule_work(&wl->filter_work); */
734 }
735
736 /* HW encryption */
737 static int wl1251_set_key_type(struct wl1251 *wl,
738                                struct wl1251_cmd_set_keys *key,
739                                enum set_key_cmd cmd,
740                                struct ieee80211_key_conf *mac80211_key,
741                                const u8 *addr)
742 {
743         switch (mac80211_key->alg) {
744         case ALG_WEP:
745                 if (is_broadcast_ether_addr(addr))
746                         key->key_type = KEY_WEP_DEFAULT;
747                 else
748                         key->key_type = KEY_WEP_ADDR;
749
750                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
751                 break;
752         case ALG_TKIP:
753                 if (is_broadcast_ether_addr(addr))
754                         key->key_type = KEY_TKIP_MIC_GROUP;
755                 else
756                         key->key_type = KEY_TKIP_MIC_PAIRWISE;
757
758                 mac80211_key->hw_key_idx = mac80211_key->keyidx;
759                 break;
760         case ALG_CCMP:
761                 if (is_broadcast_ether_addr(addr))
762                         key->key_type = KEY_AES_GROUP;
763                 else
764                         key->key_type = KEY_AES_PAIRWISE;
765                 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
766                 break;
767         default:
768                 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
769                 return -EOPNOTSUPP;
770         }
771
772         return 0;
773 }
774
775 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
776                              struct ieee80211_vif *vif,
777                              struct ieee80211_sta *sta,
778                              struct ieee80211_key_conf *key)
779 {
780         struct wl1251 *wl = hw->priv;
781         struct wl1251_cmd_set_keys *wl_cmd;
782         const u8 *addr;
783         int ret;
784
785         static const u8 bcast_addr[ETH_ALEN] =
786                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
787
788         wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
789
790         wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
791         if (!wl_cmd) {
792                 ret = -ENOMEM;
793                 goto out;
794         }
795
796         addr = sta ? sta->addr : bcast_addr;
797
798         wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
799         wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
800         wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
801                      key->alg, key->keyidx, key->keylen, key->flags);
802         wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
803
804         if (is_zero_ether_addr(addr)) {
805                 /* We dont support TX only encryption */
806                 ret = -EOPNOTSUPP;
807                 goto out;
808         }
809
810         mutex_lock(&wl->mutex);
811
812         ret = wl1251_ps_elp_wakeup(wl);
813         if (ret < 0)
814                 goto out_unlock;
815
816         switch (cmd) {
817         case SET_KEY:
818                 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
819                 break;
820         case DISABLE_KEY:
821                 wl_cmd->key_action = KEY_REMOVE;
822                 break;
823         default:
824                 wl1251_error("Unsupported key cmd 0x%x", cmd);
825                 break;
826         }
827
828         ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
829         if (ret < 0) {
830                 wl1251_error("Set KEY type failed");
831                 goto out_sleep;
832         }
833
834         if (wl_cmd->key_type != KEY_WEP_DEFAULT)
835                 memcpy(wl_cmd->addr, addr, ETH_ALEN);
836
837         if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
838             (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
839                 /*
840                  * We get the key in the following form:
841                  * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
842                  * but the target is expecting:
843                  * TKIP - RX MIC - TX MIC
844                  */
845                 memcpy(wl_cmd->key, key->key, 16);
846                 memcpy(wl_cmd->key + 16, key->key + 24, 8);
847                 memcpy(wl_cmd->key + 24, key->key + 16, 8);
848
849         } else {
850                 memcpy(wl_cmd->key, key->key, key->keylen);
851         }
852         wl_cmd->key_size = key->keylen;
853
854         wl_cmd->id = key->keyidx;
855         wl_cmd->ssid_profile = 0;
856
857         wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
858
859         ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
860         if (ret < 0) {
861                 wl1251_warning("could not set keys");
862                 goto out_sleep;
863         }
864
865 out_sleep:
866         wl1251_ps_elp_sleep(wl);
867
868 out_unlock:
869         mutex_unlock(&wl->mutex);
870
871 out:
872         kfree(wl_cmd);
873
874         return ret;
875 }
876
877 static int wl1251_build_basic_rates(char *rates)
878 {
879         u8 index = 0;
880
881         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
882         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
883         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
884         rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
885
886         return index;
887 }
888
889 static int wl1251_build_extended_rates(char *rates)
890 {
891         u8 index = 0;
892
893         rates[index++] = IEEE80211_OFDM_RATE_6MB;
894         rates[index++] = IEEE80211_OFDM_RATE_9MB;
895         rates[index++] = IEEE80211_OFDM_RATE_12MB;
896         rates[index++] = IEEE80211_OFDM_RATE_18MB;
897         rates[index++] = IEEE80211_OFDM_RATE_24MB;
898         rates[index++] = IEEE80211_OFDM_RATE_36MB;
899         rates[index++] = IEEE80211_OFDM_RATE_48MB;
900         rates[index++] = IEEE80211_OFDM_RATE_54MB;
901
902         return index;
903 }
904
905
906 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
907 {
908         struct wl12xx_probe_req_template template;
909         struct wl12xx_ie_rates *rates;
910         char *ptr;
911         u16 size;
912
913         ptr = (char *)&template;
914         size = sizeof(struct ieee80211_header);
915
916         memset(template.header.da, 0xff, ETH_ALEN);
917         memset(template.header.bssid, 0xff, ETH_ALEN);
918         memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
919         template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
920
921         /* IEs */
922         /* SSID */
923         template.ssid.header.id = WLAN_EID_SSID;
924         template.ssid.header.len = ssid_len;
925         if (ssid_len && ssid)
926                 memcpy(template.ssid.ssid, ssid, ssid_len);
927         size += sizeof(struct wl12xx_ie_header) + ssid_len;
928         ptr += size;
929
930         /* Basic Rates */
931         rates = (struct wl12xx_ie_rates *)ptr;
932         rates->header.id = WLAN_EID_SUPP_RATES;
933         rates->header.len = wl1251_build_basic_rates(rates->rates);
934         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
935         ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
936
937         /* Extended rates */
938         rates = (struct wl12xx_ie_rates *)ptr;
939         rates->header.id = WLAN_EID_EXT_SUPP_RATES;
940         rates->header.len = wl1251_build_extended_rates(rates->rates);
941         size += sizeof(struct wl12xx_ie_header) + rates->header.len;
942
943         wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
944
945         return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
946                                       size);
947 }
948
949 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
950                           u8 active_scan, u8 high_prio, u8 num_channels,
951                           u8 probe_requests)
952 {
953         struct wl1251_cmd_trigger_scan_to *trigger = NULL;
954         struct cmd_scan *params = NULL;
955         int i, ret;
956         u16 scan_options = 0;
957
958         if (wl->scanning)
959                 return -EINVAL;
960
961         params = kzalloc(sizeof(*params), GFP_KERNEL);
962         if (!params)
963                 return -ENOMEM;
964
965         params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
966         params->params.rx_filter_options =
967                 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
968
969         /* High priority scan */
970         if (!active_scan)
971                 scan_options |= SCAN_PASSIVE;
972         if (high_prio)
973                 scan_options |= SCAN_PRIORITY_HIGH;
974         params->params.scan_options = scan_options;
975
976         params->params.num_channels = num_channels;
977         params->params.num_probe_requests = probe_requests;
978         params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
979         params->params.tid_trigger = 0;
980
981         for (i = 0; i < num_channels; i++) {
982                 params->channels[i].min_duration = cpu_to_le32(30000);
983                 params->channels[i].max_duration = cpu_to_le32(60000);
984                 memset(&params->channels[i].bssid_lsb, 0xff, 4);
985                 memset(&params->channels[i].bssid_msb, 0xff, 2);
986                 params->channels[i].early_termination = 0;
987                 params->channels[i].tx_power_att = 0;
988                 params->channels[i].channel = i + 1;
989                 memset(params->channels[i].pad, 0, 3);
990         }
991
992         for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
993                 memset(&params->channels[i], 0,
994                        sizeof(struct basic_scan_channel_parameters));
995
996         if (len && ssid) {
997                 params->params.ssid_len = len;
998                 memcpy(params->params.ssid, ssid, len);
999         } else {
1000                 params->params.ssid_len = 0;
1001                 memset(params->params.ssid, 0, 32);
1002         }
1003
1004         ret = wl1251_build_probe_req(wl, ssid, len);
1005         if (ret < 0) {
1006                 wl1251_error("PROBE request template failed");
1007                 goto out;
1008         }
1009
1010         trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
1011         if (!trigger)
1012                 goto out;
1013
1014         trigger->timeout = 0;
1015
1016         ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
1017                               sizeof(*trigger));
1018         if (ret < 0) {
1019                 wl1251_error("trigger scan to failed for hw scan");
1020                 goto out;
1021         }
1022
1023         wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
1024
1025         wl->scanning = true;
1026
1027         ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
1028         if (ret < 0)
1029                 wl1251_error("SCAN failed");
1030
1031         wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
1032
1033         if (params->header.status != CMD_STATUS_SUCCESS) {
1034                 wl1251_error("TEST command answer error: %d",
1035                              params->header.status);
1036                 wl->scanning = false;
1037                 ret = -EIO;
1038                 goto out;
1039         }
1040
1041 out:
1042         kfree(params);
1043         return ret;
1044
1045 }
1046
1047 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1048                              struct cfg80211_scan_request *req)
1049 {
1050         struct wl1251 *wl = hw->priv;
1051         int ret;
1052         u8 *ssid = NULL;
1053         size_t ssid_len = 0;
1054
1055         wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1056
1057         if (req->n_ssids) {
1058                 ssid = req->ssids[0].ssid;
1059                 ssid_len = req->ssids[0].ssid_len;
1060         }
1061
1062         mutex_lock(&wl->mutex);
1063
1064         ret = wl1251_ps_elp_wakeup(wl);
1065         if (ret < 0)
1066                 goto out;
1067
1068         ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1069
1070         wl1251_ps_elp_sleep(wl);
1071
1072 out:
1073         mutex_unlock(&wl->mutex);
1074
1075         return ret;
1076 }
1077
1078 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1079 {
1080         struct wl1251 *wl = hw->priv;
1081         int ret;
1082
1083         mutex_lock(&wl->mutex);
1084
1085         ret = wl1251_ps_elp_wakeup(wl);
1086         if (ret < 0)
1087                 goto out;
1088
1089         ret = wl1251_acx_rts_threshold(wl, (u16) value);
1090         if (ret < 0)
1091                 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1092
1093         wl1251_ps_elp_sleep(wl);
1094
1095 out:
1096         mutex_unlock(&wl->mutex);
1097
1098         return ret;
1099 }
1100
1101 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1102                                        struct ieee80211_vif *vif,
1103                                        struct ieee80211_bss_conf *bss_conf,
1104                                        u32 changed)
1105 {
1106         enum wl1251_cmd_ps_mode mode;
1107         struct wl1251 *wl = hw->priv;
1108         struct sk_buff *beacon;
1109         int ret;
1110
1111         wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1112
1113         mutex_lock(&wl->mutex);
1114
1115         ret = wl1251_ps_elp_wakeup(wl);
1116         if (ret < 0)
1117                 goto out;
1118
1119         if (changed & BSS_CHANGED_ASSOC) {
1120                 if (bss_conf->assoc) {
1121                         wl->beacon_int = bss_conf->beacon_int;
1122                         wl->dtim_period = bss_conf->dtim_period;
1123
1124                         ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
1125                                                           wl->dtim_period);
1126                         wl->aid = bss_conf->aid;
1127
1128                         ret = wl1251_build_ps_poll(wl, wl->aid);
1129                         if (ret < 0)
1130                                 goto out_sleep;
1131
1132                         ret = wl1251_acx_aid(wl, wl->aid);
1133                         if (ret < 0)
1134                                 goto out_sleep;
1135
1136                         /* If we want to go in PSM but we're not there yet */
1137                         if (wl->psm_requested && !wl->psm) {
1138                                 mode = STATION_POWER_SAVE_MODE;
1139                                 ret = wl1251_ps_set_mode(wl, mode);
1140                                 if (ret < 0)
1141                                         goto out_sleep;
1142                         }
1143                 } else {
1144                         /* use defaults when not associated */
1145                         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1146                         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1147                 }
1148         }
1149         if (changed & BSS_CHANGED_ERP_SLOT) {
1150                 if (bss_conf->use_short_slot)
1151                         ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1152                 else
1153                         ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1154                 if (ret < 0) {
1155                         wl1251_warning("Set slot time failed %d", ret);
1156                         goto out_sleep;
1157                 }
1158         }
1159
1160         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1161                 if (bss_conf->use_short_preamble)
1162                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1163                 else
1164                         wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1165         }
1166
1167         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1168                 if (bss_conf->use_cts_prot)
1169                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1170                 else
1171                         ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1172                 if (ret < 0) {
1173                         wl1251_warning("Set ctsprotect failed %d", ret);
1174                         goto out;
1175                 }
1176         }
1177
1178         if (changed & BSS_CHANGED_BSSID) {
1179                 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1180
1181                 ret = wl1251_build_null_data(wl);
1182                 if (ret < 0)
1183                         goto out;
1184
1185                 if (wl->bss_type != BSS_TYPE_IBSS) {
1186                         ret = wl1251_join(wl, wl->bss_type, wl->channel,
1187                                           wl->beacon_int, wl->dtim_period);
1188                         if (ret < 0)
1189                                 goto out_sleep;
1190                         wl1251_warning("Set ctsprotect failed %d", ret);
1191                         goto out_sleep;
1192                 }
1193         }
1194
1195         if (changed & BSS_CHANGED_BEACON) {
1196                 beacon = ieee80211_beacon_get(hw, vif);
1197                 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1198                                               beacon->len);
1199
1200                 if (ret < 0) {
1201                         dev_kfree_skb(beacon);
1202                         goto out;
1203                 }
1204
1205                 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1206                                               beacon->len);
1207
1208                 dev_kfree_skb(beacon);
1209
1210                 if (ret < 0)
1211                         goto out;
1212
1213                 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1214                                   wl->channel, wl->dtim_period);
1215
1216                 if (ret < 0)
1217                         goto out;
1218         }
1219
1220 out_sleep:
1221         wl1251_ps_elp_sleep(wl);
1222
1223 out:
1224         mutex_unlock(&wl->mutex);
1225 }
1226
1227
1228 /* can't be const, mac80211 writes to this */
1229 static struct ieee80211_rate wl1251_rates[] = {
1230         { .bitrate = 10,
1231           .hw_value = 0x1,
1232           .hw_value_short = 0x1, },
1233         { .bitrate = 20,
1234           .hw_value = 0x2,
1235           .hw_value_short = 0x2,
1236           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1237         { .bitrate = 55,
1238           .hw_value = 0x4,
1239           .hw_value_short = 0x4,
1240           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1241         { .bitrate = 110,
1242           .hw_value = 0x20,
1243           .hw_value_short = 0x20,
1244           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1245         { .bitrate = 60,
1246           .hw_value = 0x8,
1247           .hw_value_short = 0x8, },
1248         { .bitrate = 90,
1249           .hw_value = 0x10,
1250           .hw_value_short = 0x10, },
1251         { .bitrate = 120,
1252           .hw_value = 0x40,
1253           .hw_value_short = 0x40, },
1254         { .bitrate = 180,
1255           .hw_value = 0x80,
1256           .hw_value_short = 0x80, },
1257         { .bitrate = 240,
1258           .hw_value = 0x200,
1259           .hw_value_short = 0x200, },
1260         { .bitrate = 360,
1261          .hw_value = 0x400,
1262          .hw_value_short = 0x400, },
1263         { .bitrate = 480,
1264           .hw_value = 0x800,
1265           .hw_value_short = 0x800, },
1266         { .bitrate = 540,
1267           .hw_value = 0x1000,
1268           .hw_value_short = 0x1000, },
1269 };
1270
1271 /* can't be const, mac80211 writes to this */
1272 static struct ieee80211_channel wl1251_channels[] = {
1273         { .hw_value = 1, .center_freq = 2412},
1274         { .hw_value = 2, .center_freq = 2417},
1275         { .hw_value = 3, .center_freq = 2422},
1276         { .hw_value = 4, .center_freq = 2427},
1277         { .hw_value = 5, .center_freq = 2432},
1278         { .hw_value = 6, .center_freq = 2437},
1279         { .hw_value = 7, .center_freq = 2442},
1280         { .hw_value = 8, .center_freq = 2447},
1281         { .hw_value = 9, .center_freq = 2452},
1282         { .hw_value = 10, .center_freq = 2457},
1283         { .hw_value = 11, .center_freq = 2462},
1284         { .hw_value = 12, .center_freq = 2467},
1285         { .hw_value = 13, .center_freq = 2472},
1286 };
1287
1288 /* can't be const, mac80211 writes to this */
1289 static struct ieee80211_supported_band wl1251_band_2ghz = {
1290         .channels = wl1251_channels,
1291         .n_channels = ARRAY_SIZE(wl1251_channels),
1292         .bitrates = wl1251_rates,
1293         .n_bitrates = ARRAY_SIZE(wl1251_rates),
1294 };
1295
1296 static const struct ieee80211_ops wl1251_ops = {
1297         .start = wl1251_op_start,
1298         .stop = wl1251_op_stop,
1299         .add_interface = wl1251_op_add_interface,
1300         .remove_interface = wl1251_op_remove_interface,
1301         .config = wl1251_op_config,
1302         .configure_filter = wl1251_op_configure_filter,
1303         .tx = wl1251_op_tx,
1304         .set_key = wl1251_op_set_key,
1305         .hw_scan = wl1251_op_hw_scan,
1306         .bss_info_changed = wl1251_op_bss_info_changed,
1307         .set_rts_threshold = wl1251_op_set_rts_threshold,
1308 };
1309
1310 static int wl1251_register_hw(struct wl1251 *wl)
1311 {
1312         int ret;
1313
1314         if (wl->mac80211_registered)
1315                 return 0;
1316
1317         SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1318
1319         ret = ieee80211_register_hw(wl->hw);
1320         if (ret < 0) {
1321                 wl1251_error("unable to register mac80211 hw: %d", ret);
1322                 return ret;
1323         }
1324
1325         wl->mac80211_registered = true;
1326
1327         wl1251_notice("loaded");
1328
1329         return 0;
1330 }
1331
1332 int wl1251_init_ieee80211(struct wl1251 *wl)
1333 {
1334         int ret;
1335
1336         /* The tx descriptor buffer and the TKIP space */
1337         wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1338                 + WL1251_TKIP_IV_SPACE;
1339
1340         /* unit us */
1341         /* FIXME: find a proper value */
1342         wl->hw->channel_change_time = 10000;
1343
1344         wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1345                 IEEE80211_HW_NOISE_DBM |
1346                 IEEE80211_HW_SUPPORTS_PS |
1347                 IEEE80211_HW_BEACON_FILTER;
1348
1349         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1350         wl->hw->wiphy->max_scan_ssids = 1;
1351         wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1352
1353         ret = wl1251_register_hw(wl);
1354         if (ret)
1355                 goto out;
1356
1357         wl1251_debugfs_init(wl);
1358         wl1251_notice("initialized");
1359
1360         ret = 0;
1361
1362 out:
1363         return ret;
1364 }
1365 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1366
1367 struct ieee80211_hw *wl1251_alloc_hw(void)
1368 {
1369         struct ieee80211_hw *hw;
1370         struct wl1251 *wl;
1371         int i;
1372         static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1373
1374         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1375         if (!hw) {
1376                 wl1251_error("could not alloc ieee80211_hw");
1377                 return ERR_PTR(-ENOMEM);
1378         }
1379
1380         wl = hw->priv;
1381         memset(wl, 0, sizeof(*wl));
1382
1383         wl->hw = hw;
1384
1385         wl->data_in_count = 0;
1386
1387         skb_queue_head_init(&wl->tx_queue);
1388
1389         INIT_WORK(&wl->filter_work, wl1251_filter_work);
1390         INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1391         wl->channel = WL1251_DEFAULT_CHANNEL;
1392         wl->scanning = false;
1393         wl->default_key = 0;
1394         wl->listen_int = 1;
1395         wl->rx_counter = 0;
1396         wl->rx_handled = 0;
1397         wl->rx_current_buffer = 0;
1398         wl->rx_last_id = 0;
1399         wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1400         wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1401         wl->elp = false;
1402         wl->psm = 0;
1403         wl->psm_requested = false;
1404         wl->tx_queue_stopped = false;
1405         wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1406         wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1407         wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1408         wl->vif = NULL;
1409
1410         for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1411                 wl->tx_frames[i] = NULL;
1412
1413         wl->next_tx_complete = 0;
1414
1415         INIT_WORK(&wl->irq_work, wl1251_irq_work);
1416         INIT_WORK(&wl->tx_work, wl1251_tx_work);
1417
1418         /*
1419          * In case our MAC address is not correctly set,
1420          * we use a random but Nokia MAC.
1421          */
1422         memcpy(wl->mac_addr, nokia_oui, 3);
1423         get_random_bytes(wl->mac_addr + 3, 3);
1424
1425         wl->state = WL1251_STATE_OFF;
1426         mutex_init(&wl->mutex);
1427
1428         wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1429         wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1430
1431         wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1432         if (!wl->rx_descriptor) {
1433                 wl1251_error("could not allocate memory for rx descriptor");
1434                 ieee80211_free_hw(hw);
1435                 return ERR_PTR(-ENOMEM);
1436         }
1437
1438         return hw;
1439 }
1440 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1441
1442 int wl1251_free_hw(struct wl1251 *wl)
1443 {
1444         ieee80211_unregister_hw(wl->hw);
1445
1446         wl1251_debugfs_exit(wl);
1447
1448         kfree(wl->target_mem_map);
1449         kfree(wl->data_path);
1450         vfree(wl->fw);
1451         wl->fw = NULL;
1452         kfree(wl->nvs);
1453         wl->nvs = NULL;
1454
1455         kfree(wl->rx_descriptor);
1456         wl->rx_descriptor = NULL;
1457
1458         ieee80211_free_hw(wl->hw);
1459
1460         return 0;
1461 }
1462 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1463
1464 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1465 MODULE_LICENSE("GPL");
1466 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1467 MODULE_ALIAS("spi:wl1251");
1468 MODULE_FIRMWARE(WL1251_FW_NAME);