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[deliverable/linux.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
32 #include "wl1251.h"
33 #include "wl12xx_80211.h"
34 #include "wl1251_reg.h"
35 #include "wl1251_io.h"
36 #include "wl1251_cmd.h"
37 #include "wl1251_event.h"
38 #include "wl1251_tx.h"
39 #include "wl1251_rx.h"
40 #include "wl1251_ps.h"
41 #include "wl1251_init.h"
42 #include "wl1251_debugfs.h"
43 #include "wl1251_boot.h"
44
45 void wl1251_enable_interrupts(struct wl1251 *wl)
46 {
47 wl->if_ops->enable_irq(wl);
48 }
49
50 void wl1251_disable_interrupts(struct wl1251 *wl)
51 {
52 wl->if_ops->disable_irq(wl);
53 }
54
55 static void wl1251_power_off(struct wl1251 *wl)
56 {
57 wl->set_power(false);
58 }
59
60 static void wl1251_power_on(struct wl1251 *wl)
61 {
62 wl->set_power(true);
63 }
64
65 static int wl1251_fetch_firmware(struct wl1251 *wl)
66 {
67 const struct firmware *fw;
68 struct device *dev = wiphy_dev(wl->hw->wiphy);
69 int ret;
70
71 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
72
73 if (ret < 0) {
74 wl1251_error("could not get firmware: %d", ret);
75 return ret;
76 }
77
78 if (fw->size % 4) {
79 wl1251_error("firmware size is not multiple of 32 bits: %zu",
80 fw->size);
81 ret = -EILSEQ;
82 goto out;
83 }
84
85 wl->fw_len = fw->size;
86 wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
87
88 if (!wl->fw) {
89 wl1251_error("could not allocate memory for the firmware");
90 ret = -ENOMEM;
91 goto out;
92 }
93
94 memcpy(wl->fw, fw->data, wl->fw_len);
95
96 ret = 0;
97
98 out:
99 release_firmware(fw);
100
101 return ret;
102 }
103
104 static int wl1251_fetch_nvs(struct wl1251 *wl)
105 {
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
108 int ret;
109
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
111
112 if (ret < 0) {
113 wl1251_error("could not get nvs file: %d", ret);
114 return ret;
115 }
116
117 if (fw->size % 4) {
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
119 fw->size);
120 ret = -EILSEQ;
121 goto out;
122 }
123
124 wl->nvs_len = fw->size;
125 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
126
127 if (!wl->nvs) {
128 wl1251_error("could not allocate memory for the nvs file");
129 ret = -ENOMEM;
130 goto out;
131 }
132
133 memcpy(wl->nvs, fw->data, wl->nvs_len);
134
135 ret = 0;
136
137 out:
138 release_firmware(fw);
139
140 return ret;
141 }
142
143 static void wl1251_fw_wakeup(struct wl1251 *wl)
144 {
145 u32 elp_reg;
146
147 elp_reg = ELPCTRL_WAKE_UP;
148 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
150
151 if (!(elp_reg & ELPCTRL_WLAN_READY))
152 wl1251_warning("WLAN not ready");
153 }
154
155 static int wl1251_chip_wakeup(struct wl1251 *wl)
156 {
157 int ret = 0;
158
159 wl1251_power_on(wl);
160 msleep(WL1251_POWER_ON_SLEEP);
161 wl->if_ops->reset(wl);
162
163 /* We don't need a real memory partition here, because we only want
164 * to use the registers at this point. */
165 wl1251_set_partition(wl,
166 0x00000000,
167 0x00000000,
168 REGISTERS_BASE,
169 REGISTERS_DOWN_SIZE);
170
171 /* ELP module wake up */
172 wl1251_fw_wakeup(wl);
173
174 /* whal_FwCtrl_BootSm() */
175
176 /* 0. read chip id from CHIP_ID */
177 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
178
179 /* 1. check if chip id is valid */
180
181 switch (wl->chip_id) {
182 case CHIP_ID_1251_PG12:
183 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
184 wl->chip_id);
185 break;
186 case CHIP_ID_1251_PG10:
187 case CHIP_ID_1251_PG11:
188 default:
189 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
190 ret = -ENODEV;
191 goto out;
192 }
193
194 if (wl->fw == NULL) {
195 ret = wl1251_fetch_firmware(wl);
196 if (ret < 0)
197 goto out;
198 }
199
200 /* No NVS from netlink, try to get it from the filesystem */
201 if (wl->nvs == NULL) {
202 ret = wl1251_fetch_nvs(wl);
203 if (ret < 0)
204 goto out;
205 }
206
207 out:
208 return ret;
209 }
210
211 static void wl1251_irq_work(struct work_struct *work)
212 {
213 u32 intr;
214 struct wl1251 *wl =
215 container_of(work, struct wl1251, irq_work);
216 int ret;
217
218 mutex_lock(&wl->mutex);
219
220 wl1251_debug(DEBUG_IRQ, "IRQ work");
221
222 if (wl->state == WL1251_STATE_OFF)
223 goto out;
224
225 ret = wl1251_ps_elp_wakeup(wl);
226 if (ret < 0)
227 goto out;
228
229 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
230
231 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
232 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
233
234 if (wl->data_path) {
235 wl->rx_counter =
236 wl1251_mem_read32(wl, wl->data_path->rx_control_addr);
237
238 /* We handle a frmware bug here */
239 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
240 case 0:
241 wl1251_debug(DEBUG_IRQ, "RX: FW and host in sync");
242 intr &= ~WL1251_ACX_INTR_RX0_DATA;
243 intr &= ~WL1251_ACX_INTR_RX1_DATA;
244 break;
245 case 1:
246 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
247 intr |= WL1251_ACX_INTR_RX0_DATA;
248 intr &= ~WL1251_ACX_INTR_RX1_DATA;
249 break;
250 case 2:
251 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
252 intr |= WL1251_ACX_INTR_RX0_DATA;
253 intr |= WL1251_ACX_INTR_RX1_DATA;
254 break;
255 default:
256 wl1251_warning("RX: FW and host out of sync: %d",
257 wl->rx_counter - wl->rx_handled);
258 break;
259 }
260
261 wl->rx_handled = wl->rx_counter;
262
263
264 wl1251_debug(DEBUG_IRQ, "RX counter: %d", wl->rx_counter);
265 }
266
267 intr &= wl->intr_mask;
268
269 if (intr == 0) {
270 wl1251_debug(DEBUG_IRQ, "INTR is 0");
271 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK,
272 ~(wl->intr_mask));
273
274 goto out_sleep;
275 }
276
277 if (intr & WL1251_ACX_INTR_RX0_DATA) {
278 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
279 wl1251_rx(wl);
280 }
281
282 if (intr & WL1251_ACX_INTR_RX1_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_TX_RESULT) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
289 wl1251_tx_complete(wl);
290 }
291
292 if (intr & (WL1251_ACX_INTR_EVENT_A | WL1251_ACX_INTR_EVENT_B)) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)", intr);
294 if (intr & WL1251_ACX_INTR_EVENT_A)
295 wl1251_event_handle(wl, 0);
296 else
297 wl1251_event_handle(wl, 1);
298 }
299
300 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
301 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_INIT_COMPLETE");
302
303 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
304
305 out_sleep:
306 wl1251_ps_elp_sleep(wl);
307
308 out:
309 mutex_unlock(&wl->mutex);
310 }
311
312 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
313 u16 beacon_interval, u8 dtim_period)
314 {
315 int ret;
316
317 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
318 DEFAULT_HW_GEN_MODULATION_TYPE,
319 wl->tx_mgmt_frm_rate,
320 wl->tx_mgmt_frm_mod);
321 if (ret < 0)
322 goto out;
323
324
325 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
326 dtim_period);
327 if (ret < 0)
328 goto out;
329
330 /*
331 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
332 * locking we just sleep instead, for now
333 */
334 msleep(10);
335
336 out:
337 return ret;
338 }
339
340 static void wl1251_filter_work(struct work_struct *work)
341 {
342 struct wl1251 *wl =
343 container_of(work, struct wl1251, filter_work);
344 int ret;
345
346 mutex_lock(&wl->mutex);
347
348 if (wl->state == WL1251_STATE_OFF)
349 goto out;
350
351 ret = wl1251_ps_elp_wakeup(wl);
352 if (ret < 0)
353 goto out;
354
355 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
356 wl->dtim_period);
357 if (ret < 0)
358 goto out_sleep;
359
360 out_sleep:
361 wl1251_ps_elp_sleep(wl);
362
363 out:
364 mutex_unlock(&wl->mutex);
365 }
366
367 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
368 {
369 struct wl1251 *wl = hw->priv;
370
371 skb_queue_tail(&wl->tx_queue, skb);
372
373 /*
374 * The chip specific setup must run before the first TX packet -
375 * before that, the tx_work will not be initialized!
376 */
377
378 ieee80211_queue_work(wl->hw, &wl->tx_work);
379
380 /*
381 * The workqueue is slow to process the tx_queue and we need stop
382 * the queue here, otherwise the queue will get too long.
383 */
384 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
385 ieee80211_stop_queues(wl->hw);
386
387 /*
388 * FIXME: this is racy, the variable is not properly
389 * protected. Maybe fix this by removing the stupid
390 * variable altogether and checking the real queue state?
391 */
392 wl->tx_queue_stopped = true;
393 }
394
395 return NETDEV_TX_OK;
396 }
397
398 static int wl1251_op_start(struct ieee80211_hw *hw)
399 {
400 struct wl1251 *wl = hw->priv;
401 int ret = 0;
402
403 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
404
405 mutex_lock(&wl->mutex);
406
407 if (wl->state != WL1251_STATE_OFF) {
408 wl1251_error("cannot start because not in off state: %d",
409 wl->state);
410 ret = -EBUSY;
411 goto out;
412 }
413
414 ret = wl1251_chip_wakeup(wl);
415 if (ret < 0)
416 goto out;
417
418 ret = wl1251_boot(wl);
419 if (ret < 0)
420 goto out;
421
422 ret = wl1251_hw_init(wl);
423 if (ret < 0)
424 goto out;
425
426 ret = wl1251_acx_station_id(wl);
427 if (ret < 0)
428 goto out;
429
430 wl->state = WL1251_STATE_ON;
431
432 wl1251_info("firmware booted (%s)", wl->fw_ver);
433
434 out:
435 if (ret < 0)
436 wl1251_power_off(wl);
437
438 mutex_unlock(&wl->mutex);
439
440 return ret;
441 }
442
443 static void wl1251_op_stop(struct ieee80211_hw *hw)
444 {
445 struct wl1251 *wl = hw->priv;
446
447 wl1251_info("down");
448
449 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
450
451 mutex_lock(&wl->mutex);
452
453 WARN_ON(wl->state != WL1251_STATE_ON);
454
455 if (wl->scanning) {
456 mutex_unlock(&wl->mutex);
457 ieee80211_scan_completed(wl->hw, true);
458 mutex_lock(&wl->mutex);
459 wl->scanning = false;
460 }
461
462 wl->state = WL1251_STATE_OFF;
463
464 wl1251_disable_interrupts(wl);
465
466 mutex_unlock(&wl->mutex);
467
468 cancel_work_sync(&wl->irq_work);
469 cancel_work_sync(&wl->tx_work);
470 cancel_work_sync(&wl->filter_work);
471
472 mutex_lock(&wl->mutex);
473
474 /* let's notify MAC80211 about the remaining pending TX frames */
475 wl1251_tx_flush(wl);
476 wl1251_power_off(wl);
477
478 memset(wl->bssid, 0, ETH_ALEN);
479 wl->listen_int = 1;
480 wl->bss_type = MAX_BSS_TYPE;
481
482 wl->data_in_count = 0;
483 wl->rx_counter = 0;
484 wl->rx_handled = 0;
485 wl->rx_current_buffer = 0;
486 wl->rx_last_id = 0;
487 wl->next_tx_complete = 0;
488 wl->elp = false;
489 wl->psm = 0;
490 wl->tx_queue_stopped = false;
491 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
492 wl->channel = WL1251_DEFAULT_CHANNEL;
493
494 wl1251_debugfs_reset(wl);
495
496 mutex_unlock(&wl->mutex);
497 }
498
499 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
500 struct ieee80211_if_init_conf *conf)
501 {
502 struct wl1251 *wl = hw->priv;
503 int ret = 0;
504
505 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
506 conf->type, conf->mac_addr);
507
508 mutex_lock(&wl->mutex);
509
510 switch (conf->type) {
511 case NL80211_IFTYPE_STATION:
512 wl->bss_type = BSS_TYPE_STA_BSS;
513 break;
514 case NL80211_IFTYPE_ADHOC:
515 wl->bss_type = BSS_TYPE_IBSS;
516 break;
517 default:
518 ret = -EOPNOTSUPP;
519 goto out;
520 }
521
522 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
523 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
524 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
525 ret = wl1251_acx_station_id(wl);
526 if (ret < 0)
527 goto out;
528 }
529
530 out:
531 mutex_unlock(&wl->mutex);
532 return ret;
533 }
534
535 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
536 struct ieee80211_if_init_conf *conf)
537 {
538 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
539 }
540
541 static int wl1251_build_null_data(struct wl1251 *wl)
542 {
543 struct wl12xx_null_data_template template;
544
545 if (!is_zero_ether_addr(wl->bssid)) {
546 memcpy(template.header.da, wl->bssid, ETH_ALEN);
547 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
548 } else {
549 memset(template.header.da, 0xff, ETH_ALEN);
550 memset(template.header.bssid, 0xff, ETH_ALEN);
551 }
552
553 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
554 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
555 IEEE80211_STYPE_NULLFUNC);
556
557 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
558 sizeof(template));
559
560 }
561
562 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
563 {
564 struct wl12xx_ps_poll_template template;
565
566 memcpy(template.bssid, wl->bssid, ETH_ALEN);
567 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
568 template.aid = aid;
569 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
570
571 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
572 sizeof(template));
573
574 }
575
576 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
577 {
578 struct wl1251 *wl = hw->priv;
579 struct ieee80211_conf *conf = &hw->conf;
580 int channel, ret = 0;
581
582 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
583
584 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
585 channel,
586 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
587 conf->power_level);
588
589 mutex_lock(&wl->mutex);
590
591 ret = wl1251_ps_elp_wakeup(wl);
592 if (ret < 0)
593 goto out;
594
595 if (channel != wl->channel) {
596 wl->channel = channel;
597
598 ret = wl1251_join(wl, wl->bss_type, wl->channel,
599 wl->beacon_int, wl->dtim_period);
600 if (ret < 0)
601 goto out_sleep;
602 }
603
604 ret = wl1251_build_null_data(wl);
605 if (ret < 0)
606 goto out_sleep;
607
608 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
609 wl1251_debug(DEBUG_PSM, "psm enabled");
610
611 wl->psm_requested = true;
612
613 /*
614 * We enter PSM only if we're already associated.
615 * If we're not, we'll enter it when joining an SSID,
616 * through the bss_info_changed() hook.
617 */
618 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
619 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
620 wl->psm_requested) {
621 wl1251_debug(DEBUG_PSM, "psm disabled");
622
623 wl->psm_requested = false;
624
625 if (wl->psm)
626 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
627 }
628
629 if (conf->power_level != wl->power_level) {
630 ret = wl1251_acx_tx_power(wl, conf->power_level);
631 if (ret < 0)
632 goto out;
633
634 wl->power_level = conf->power_level;
635 }
636
637 out_sleep:
638 wl1251_ps_elp_sleep(wl);
639
640 out:
641 mutex_unlock(&wl->mutex);
642
643 return ret;
644 }
645
646 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
647 FIF_ALLMULTI | \
648 FIF_FCSFAIL | \
649 FIF_BCN_PRBRESP_PROMISC | \
650 FIF_CONTROL | \
651 FIF_OTHER_BSS)
652
653 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
654 unsigned int changed,
655 unsigned int *total,u64 multicast)
656 {
657 struct wl1251 *wl = hw->priv;
658
659 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
660
661 *total &= WL1251_SUPPORTED_FILTERS;
662 changed &= WL1251_SUPPORTED_FILTERS;
663
664 if (changed == 0)
665 /* no filters which we support changed */
666 return;
667
668 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
669
670 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
671 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
672
673 if (*total & FIF_PROMISC_IN_BSS) {
674 wl->rx_config |= CFG_BSSID_FILTER_EN;
675 wl->rx_config |= CFG_RX_ALL_GOOD;
676 }
677 if (*total & FIF_ALLMULTI)
678 /*
679 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
680 * all multicast frames
681 */
682 wl->rx_config &= ~CFG_MC_FILTER_EN;
683 if (*total & FIF_FCSFAIL)
684 wl->rx_filter |= CFG_RX_FCS_ERROR;
685 if (*total & FIF_BCN_PRBRESP_PROMISC) {
686 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
687 wl->rx_config &= ~CFG_SSID_FILTER_EN;
688 }
689 if (*total & FIF_CONTROL)
690 wl->rx_filter |= CFG_RX_CTL_EN;
691 if (*total & FIF_OTHER_BSS)
692 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
693
694 /*
695 * FIXME: workqueues need to be properly cancelled on stop(), for
696 * now let's just disable changing the filter settings. They will
697 * be updated any on config().
698 */
699 /* schedule_work(&wl->filter_work); */
700 }
701
702 /* HW encryption */
703 static int wl1251_set_key_type(struct wl1251 *wl,
704 struct wl1251_cmd_set_keys *key,
705 enum set_key_cmd cmd,
706 struct ieee80211_key_conf *mac80211_key,
707 const u8 *addr)
708 {
709 switch (mac80211_key->alg) {
710 case ALG_WEP:
711 if (is_broadcast_ether_addr(addr))
712 key->key_type = KEY_WEP_DEFAULT;
713 else
714 key->key_type = KEY_WEP_ADDR;
715
716 mac80211_key->hw_key_idx = mac80211_key->keyidx;
717 break;
718 case ALG_TKIP:
719 if (is_broadcast_ether_addr(addr))
720 key->key_type = KEY_TKIP_MIC_GROUP;
721 else
722 key->key_type = KEY_TKIP_MIC_PAIRWISE;
723
724 mac80211_key->hw_key_idx = mac80211_key->keyidx;
725 break;
726 case ALG_CCMP:
727 if (is_broadcast_ether_addr(addr))
728 key->key_type = KEY_AES_GROUP;
729 else
730 key->key_type = KEY_AES_PAIRWISE;
731 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
732 break;
733 default:
734 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
735 return -EOPNOTSUPP;
736 }
737
738 return 0;
739 }
740
741 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
742 struct ieee80211_vif *vif,
743 struct ieee80211_sta *sta,
744 struct ieee80211_key_conf *key)
745 {
746 struct wl1251 *wl = hw->priv;
747 struct wl1251_cmd_set_keys *wl_cmd;
748 const u8 *addr;
749 int ret;
750
751 static const u8 bcast_addr[ETH_ALEN] =
752 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
753
754 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
755
756 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
757 if (!wl_cmd) {
758 ret = -ENOMEM;
759 goto out;
760 }
761
762 addr = sta ? sta->addr : bcast_addr;
763
764 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
765 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
766 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
767 key->alg, key->keyidx, key->keylen, key->flags);
768 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
769
770 if (is_zero_ether_addr(addr)) {
771 /* We dont support TX only encryption */
772 ret = -EOPNOTSUPP;
773 goto out;
774 }
775
776 mutex_lock(&wl->mutex);
777
778 ret = wl1251_ps_elp_wakeup(wl);
779 if (ret < 0)
780 goto out_unlock;
781
782 switch (cmd) {
783 case SET_KEY:
784 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
785 break;
786 case DISABLE_KEY:
787 wl_cmd->key_action = KEY_REMOVE;
788 break;
789 default:
790 wl1251_error("Unsupported key cmd 0x%x", cmd);
791 break;
792 }
793
794 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
795 if (ret < 0) {
796 wl1251_error("Set KEY type failed");
797 goto out_sleep;
798 }
799
800 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
801 memcpy(wl_cmd->addr, addr, ETH_ALEN);
802
803 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
804 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
805 /*
806 * We get the key in the following form:
807 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
808 * but the target is expecting:
809 * TKIP - RX MIC - TX MIC
810 */
811 memcpy(wl_cmd->key, key->key, 16);
812 memcpy(wl_cmd->key + 16, key->key + 24, 8);
813 memcpy(wl_cmd->key + 24, key->key + 16, 8);
814
815 } else {
816 memcpy(wl_cmd->key, key->key, key->keylen);
817 }
818 wl_cmd->key_size = key->keylen;
819
820 wl_cmd->id = key->keyidx;
821 wl_cmd->ssid_profile = 0;
822
823 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
824
825 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
826 if (ret < 0) {
827 wl1251_warning("could not set keys");
828 goto out_sleep;
829 }
830
831 out_sleep:
832 wl1251_ps_elp_sleep(wl);
833
834 out_unlock:
835 mutex_unlock(&wl->mutex);
836
837 out:
838 kfree(wl_cmd);
839
840 return ret;
841 }
842
843 static int wl1251_build_basic_rates(char *rates)
844 {
845 u8 index = 0;
846
847 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
848 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
849 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
850 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
851
852 return index;
853 }
854
855 static int wl1251_build_extended_rates(char *rates)
856 {
857 u8 index = 0;
858
859 rates[index++] = IEEE80211_OFDM_RATE_6MB;
860 rates[index++] = IEEE80211_OFDM_RATE_9MB;
861 rates[index++] = IEEE80211_OFDM_RATE_12MB;
862 rates[index++] = IEEE80211_OFDM_RATE_18MB;
863 rates[index++] = IEEE80211_OFDM_RATE_24MB;
864 rates[index++] = IEEE80211_OFDM_RATE_36MB;
865 rates[index++] = IEEE80211_OFDM_RATE_48MB;
866 rates[index++] = IEEE80211_OFDM_RATE_54MB;
867
868 return index;
869 }
870
871
872 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
873 {
874 struct wl12xx_probe_req_template template;
875 struct wl12xx_ie_rates *rates;
876 char *ptr;
877 u16 size;
878
879 ptr = (char *)&template;
880 size = sizeof(struct ieee80211_header);
881
882 memset(template.header.da, 0xff, ETH_ALEN);
883 memset(template.header.bssid, 0xff, ETH_ALEN);
884 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
885 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
886
887 /* IEs */
888 /* SSID */
889 template.ssid.header.id = WLAN_EID_SSID;
890 template.ssid.header.len = ssid_len;
891 if (ssid_len && ssid)
892 memcpy(template.ssid.ssid, ssid, ssid_len);
893 size += sizeof(struct wl12xx_ie_header) + ssid_len;
894 ptr += size;
895
896 /* Basic Rates */
897 rates = (struct wl12xx_ie_rates *)ptr;
898 rates->header.id = WLAN_EID_SUPP_RATES;
899 rates->header.len = wl1251_build_basic_rates(rates->rates);
900 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
901 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
902
903 /* Extended rates */
904 rates = (struct wl12xx_ie_rates *)ptr;
905 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
906 rates->header.len = wl1251_build_extended_rates(rates->rates);
907 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
908
909 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
910
911 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
912 size);
913 }
914
915 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
916 u8 active_scan, u8 high_prio, u8 num_channels,
917 u8 probe_requests)
918 {
919 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
920 struct cmd_scan *params = NULL;
921 int i, ret;
922 u16 scan_options = 0;
923
924 if (wl->scanning)
925 return -EINVAL;
926
927 params = kzalloc(sizeof(*params), GFP_KERNEL);
928 if (!params)
929 return -ENOMEM;
930
931 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
932 params->params.rx_filter_options =
933 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
934
935 /* High priority scan */
936 if (!active_scan)
937 scan_options |= SCAN_PASSIVE;
938 if (high_prio)
939 scan_options |= SCAN_PRIORITY_HIGH;
940 params->params.scan_options = scan_options;
941
942 params->params.num_channels = num_channels;
943 params->params.num_probe_requests = probe_requests;
944 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
945 params->params.tid_trigger = 0;
946
947 for (i = 0; i < num_channels; i++) {
948 params->channels[i].min_duration = cpu_to_le32(30000);
949 params->channels[i].max_duration = cpu_to_le32(60000);
950 memset(&params->channels[i].bssid_lsb, 0xff, 4);
951 memset(&params->channels[i].bssid_msb, 0xff, 2);
952 params->channels[i].early_termination = 0;
953 params->channels[i].tx_power_att = 0;
954 params->channels[i].channel = i + 1;
955 memset(params->channels[i].pad, 0, 3);
956 }
957
958 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
959 memset(&params->channels[i], 0,
960 sizeof(struct basic_scan_channel_parameters));
961
962 if (len && ssid) {
963 params->params.ssid_len = len;
964 memcpy(params->params.ssid, ssid, len);
965 } else {
966 params->params.ssid_len = 0;
967 memset(params->params.ssid, 0, 32);
968 }
969
970 ret = wl1251_build_probe_req(wl, ssid, len);
971 if (ret < 0) {
972 wl1251_error("PROBE request template failed");
973 goto out;
974 }
975
976 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
977 if (!trigger)
978 goto out;
979
980 trigger->timeout = 0;
981
982 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
983 sizeof(*trigger));
984 if (ret < 0) {
985 wl1251_error("trigger scan to failed for hw scan");
986 goto out;
987 }
988
989 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
990
991 wl->scanning = true;
992
993 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
994 if (ret < 0)
995 wl1251_error("SCAN failed");
996
997 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
998
999 if (params->header.status != CMD_STATUS_SUCCESS) {
1000 wl1251_error("TEST command answer error: %d",
1001 params->header.status);
1002 wl->scanning = false;
1003 ret = -EIO;
1004 goto out;
1005 }
1006
1007 out:
1008 kfree(params);
1009 return ret;
1010
1011 }
1012
1013 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1014 struct cfg80211_scan_request *req)
1015 {
1016 struct wl1251 *wl = hw->priv;
1017 int ret;
1018 u8 *ssid = NULL;
1019 size_t ssid_len = 0;
1020
1021 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1022
1023 if (req->n_ssids) {
1024 ssid = req->ssids[0].ssid;
1025 ssid_len = req->ssids[0].ssid_len;
1026 }
1027
1028 mutex_lock(&wl->mutex);
1029
1030 ret = wl1251_ps_elp_wakeup(wl);
1031 if (ret < 0)
1032 goto out;
1033
1034 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1035
1036 wl1251_ps_elp_sleep(wl);
1037
1038 out:
1039 mutex_unlock(&wl->mutex);
1040
1041 return ret;
1042 }
1043
1044 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1045 {
1046 struct wl1251 *wl = hw->priv;
1047 int ret;
1048
1049 mutex_lock(&wl->mutex);
1050
1051 ret = wl1251_ps_elp_wakeup(wl);
1052 if (ret < 0)
1053 goto out;
1054
1055 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1056 if (ret < 0)
1057 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1058
1059 wl1251_ps_elp_sleep(wl);
1060
1061 out:
1062 mutex_unlock(&wl->mutex);
1063
1064 return ret;
1065 }
1066
1067 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1068 struct ieee80211_vif *vif,
1069 struct ieee80211_bss_conf *bss_conf,
1070 u32 changed)
1071 {
1072 enum wl1251_cmd_ps_mode mode;
1073 struct wl1251 *wl = hw->priv;
1074 struct sk_buff *beacon;
1075 int ret;
1076
1077 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1078
1079 mutex_lock(&wl->mutex);
1080
1081 ret = wl1251_ps_elp_wakeup(wl);
1082 if (ret < 0)
1083 goto out;
1084
1085 if (changed & BSS_CHANGED_ASSOC) {
1086 if (bss_conf->assoc) {
1087 wl->beacon_int = bss_conf->beacon_int;
1088 wl->dtim_period = bss_conf->dtim_period;
1089
1090 /* FIXME: call join */
1091
1092 wl->aid = bss_conf->aid;
1093
1094 ret = wl1251_build_ps_poll(wl, wl->aid);
1095 if (ret < 0)
1096 goto out_sleep;
1097
1098 ret = wl1251_acx_aid(wl, wl->aid);
1099 if (ret < 0)
1100 goto out_sleep;
1101
1102 /* If we want to go in PSM but we're not there yet */
1103 if (wl->psm_requested && !wl->psm) {
1104 mode = STATION_POWER_SAVE_MODE;
1105 ret = wl1251_ps_set_mode(wl, mode);
1106 if (ret < 0)
1107 goto out_sleep;
1108 }
1109 } else {
1110 /* use defaults when not associated */
1111 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1112 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1113 }
1114 }
1115 if (changed & BSS_CHANGED_ERP_SLOT) {
1116 if (bss_conf->use_short_slot)
1117 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1118 else
1119 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1120 if (ret < 0) {
1121 wl1251_warning("Set slot time failed %d", ret);
1122 goto out_sleep;
1123 }
1124 }
1125
1126 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1127 if (bss_conf->use_short_preamble)
1128 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1129 else
1130 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1131 }
1132
1133 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1134 if (bss_conf->use_cts_prot)
1135 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1136 else
1137 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1138 if (ret < 0) {
1139 wl1251_warning("Set ctsprotect failed %d", ret);
1140 goto out;
1141 }
1142 }
1143
1144 if (changed & BSS_CHANGED_BSSID) {
1145 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1146
1147 ret = wl1251_build_null_data(wl);
1148 if (ret < 0)
1149 goto out;
1150
1151 if (wl->bss_type != BSS_TYPE_IBSS) {
1152 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1153 wl->beacon_int, wl->dtim_period);
1154 if (ret < 0)
1155 goto out_sleep;
1156 wl1251_warning("Set ctsprotect failed %d", ret);
1157 goto out_sleep;
1158 }
1159 }
1160
1161 if (changed & BSS_CHANGED_BEACON) {
1162 beacon = ieee80211_beacon_get(hw, vif);
1163 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1164 beacon->len);
1165
1166 if (ret < 0) {
1167 dev_kfree_skb(beacon);
1168 goto out;
1169 }
1170
1171 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1172 beacon->len);
1173
1174 dev_kfree_skb(beacon);
1175
1176 if (ret < 0)
1177 goto out;
1178
1179 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1180 wl->channel, wl->dtim_period);
1181
1182 if (ret < 0)
1183 goto out;
1184 }
1185
1186 out_sleep:
1187 wl1251_ps_elp_sleep(wl);
1188
1189 out:
1190 mutex_unlock(&wl->mutex);
1191 }
1192
1193
1194 /* can't be const, mac80211 writes to this */
1195 static struct ieee80211_rate wl1251_rates[] = {
1196 { .bitrate = 10,
1197 .hw_value = 0x1,
1198 .hw_value_short = 0x1, },
1199 { .bitrate = 20,
1200 .hw_value = 0x2,
1201 .hw_value_short = 0x2,
1202 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1203 { .bitrate = 55,
1204 .hw_value = 0x4,
1205 .hw_value_short = 0x4,
1206 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1207 { .bitrate = 110,
1208 .hw_value = 0x20,
1209 .hw_value_short = 0x20,
1210 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1211 { .bitrate = 60,
1212 .hw_value = 0x8,
1213 .hw_value_short = 0x8, },
1214 { .bitrate = 90,
1215 .hw_value = 0x10,
1216 .hw_value_short = 0x10, },
1217 { .bitrate = 120,
1218 .hw_value = 0x40,
1219 .hw_value_short = 0x40, },
1220 { .bitrate = 180,
1221 .hw_value = 0x80,
1222 .hw_value_short = 0x80, },
1223 { .bitrate = 240,
1224 .hw_value = 0x200,
1225 .hw_value_short = 0x200, },
1226 { .bitrate = 360,
1227 .hw_value = 0x400,
1228 .hw_value_short = 0x400, },
1229 { .bitrate = 480,
1230 .hw_value = 0x800,
1231 .hw_value_short = 0x800, },
1232 { .bitrate = 540,
1233 .hw_value = 0x1000,
1234 .hw_value_short = 0x1000, },
1235 };
1236
1237 /* can't be const, mac80211 writes to this */
1238 static struct ieee80211_channel wl1251_channels[] = {
1239 { .hw_value = 1, .center_freq = 2412},
1240 { .hw_value = 2, .center_freq = 2417},
1241 { .hw_value = 3, .center_freq = 2422},
1242 { .hw_value = 4, .center_freq = 2427},
1243 { .hw_value = 5, .center_freq = 2432},
1244 { .hw_value = 6, .center_freq = 2437},
1245 { .hw_value = 7, .center_freq = 2442},
1246 { .hw_value = 8, .center_freq = 2447},
1247 { .hw_value = 9, .center_freq = 2452},
1248 { .hw_value = 10, .center_freq = 2457},
1249 { .hw_value = 11, .center_freq = 2462},
1250 { .hw_value = 12, .center_freq = 2467},
1251 { .hw_value = 13, .center_freq = 2472},
1252 };
1253
1254 /* can't be const, mac80211 writes to this */
1255 static struct ieee80211_supported_band wl1251_band_2ghz = {
1256 .channels = wl1251_channels,
1257 .n_channels = ARRAY_SIZE(wl1251_channels),
1258 .bitrates = wl1251_rates,
1259 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1260 };
1261
1262 static const struct ieee80211_ops wl1251_ops = {
1263 .start = wl1251_op_start,
1264 .stop = wl1251_op_stop,
1265 .add_interface = wl1251_op_add_interface,
1266 .remove_interface = wl1251_op_remove_interface,
1267 .config = wl1251_op_config,
1268 .configure_filter = wl1251_op_configure_filter,
1269 .tx = wl1251_op_tx,
1270 .set_key = wl1251_op_set_key,
1271 .hw_scan = wl1251_op_hw_scan,
1272 .bss_info_changed = wl1251_op_bss_info_changed,
1273 .set_rts_threshold = wl1251_op_set_rts_threshold,
1274 };
1275
1276 static int wl1251_register_hw(struct wl1251 *wl)
1277 {
1278 int ret;
1279
1280 if (wl->mac80211_registered)
1281 return 0;
1282
1283 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1284
1285 ret = ieee80211_register_hw(wl->hw);
1286 if (ret < 0) {
1287 wl1251_error("unable to register mac80211 hw: %d", ret);
1288 return ret;
1289 }
1290
1291 wl->mac80211_registered = true;
1292
1293 wl1251_notice("loaded");
1294
1295 return 0;
1296 }
1297
1298 int wl1251_init_ieee80211(struct wl1251 *wl)
1299 {
1300 int ret;
1301
1302 /* The tx descriptor buffer and the TKIP space */
1303 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1304 + WL1251_TKIP_IV_SPACE;
1305
1306 /* unit us */
1307 /* FIXME: find a proper value */
1308 wl->hw->channel_change_time = 10000;
1309
1310 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1311 IEEE80211_HW_NOISE_DBM;
1312
1313 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1314 wl->hw->wiphy->max_scan_ssids = 1;
1315 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1316
1317 ret = wl1251_register_hw(wl);
1318 if (ret)
1319 goto out;
1320
1321 wl1251_debugfs_init(wl);
1322 wl1251_notice("initialized");
1323
1324 ret = 0;
1325
1326 out:
1327 return ret;
1328 }
1329 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1330
1331 struct ieee80211_hw *wl1251_alloc_hw(void)
1332 {
1333 struct ieee80211_hw *hw;
1334 struct wl1251 *wl;
1335 int i;
1336 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1337
1338 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1339 if (!hw) {
1340 wl1251_error("could not alloc ieee80211_hw");
1341 return ERR_PTR(-ENOMEM);
1342 }
1343
1344 wl = hw->priv;
1345 memset(wl, 0, sizeof(*wl));
1346
1347 wl->hw = hw;
1348
1349 wl->data_in_count = 0;
1350
1351 skb_queue_head_init(&wl->tx_queue);
1352
1353 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1354 wl->channel = WL1251_DEFAULT_CHANNEL;
1355 wl->scanning = false;
1356 wl->default_key = 0;
1357 wl->listen_int = 1;
1358 wl->rx_counter = 0;
1359 wl->rx_handled = 0;
1360 wl->rx_current_buffer = 0;
1361 wl->rx_last_id = 0;
1362 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1363 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1364 wl->elp = false;
1365 wl->psm = 0;
1366 wl->psm_requested = false;
1367 wl->tx_queue_stopped = false;
1368 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1369 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1370 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1371
1372 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1373 wl->tx_frames[i] = NULL;
1374
1375 wl->next_tx_complete = 0;
1376
1377 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1378 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1379
1380 /*
1381 * In case our MAC address is not correctly set,
1382 * we use a random but Nokia MAC.
1383 */
1384 memcpy(wl->mac_addr, nokia_oui, 3);
1385 get_random_bytes(wl->mac_addr + 3, 3);
1386
1387 wl->state = WL1251_STATE_OFF;
1388 mutex_init(&wl->mutex);
1389
1390 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1391 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1392
1393 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1394 if (!wl->rx_descriptor) {
1395 wl1251_error("could not allocate memory for rx descriptor");
1396 ieee80211_free_hw(hw);
1397 return ERR_PTR(-ENOMEM);
1398 }
1399
1400 return hw;
1401 }
1402 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1403
1404 int wl1251_free_hw(struct wl1251 *wl)
1405 {
1406 ieee80211_unregister_hw(wl->hw);
1407
1408 wl1251_debugfs_exit(wl);
1409
1410 kfree(wl->target_mem_map);
1411 kfree(wl->data_path);
1412 kfree(wl->fw);
1413 wl->fw = NULL;
1414 kfree(wl->nvs);
1415 wl->nvs = NULL;
1416
1417 kfree(wl->rx_descriptor);
1418 wl->rx_descriptor = NULL;
1419
1420 ieee80211_free_hw(wl->hw);
1421
1422 return 0;
1423 }
1424 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1425
1426 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1427 MODULE_LICENSE("GPL");
1428 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1429 MODULE_ALIAS("spi:wl12xx");
Linux kernel - Deliverables
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