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wl1251: Add IRQ looping support
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blobdad010d114f8a7820bd5d139e7a3fe96af1bd721
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 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
312
313 } while (intr && --ctr);
314
315 out_sleep:
316 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
317 wl1251_ps_elp_sleep(wl);
318
319 out:
320 mutex_unlock(&wl->mutex);
321 }
322
323 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
324 u16 beacon_interval, u8 dtim_period)
325 {
326 int ret;
327
328 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
329 DEFAULT_HW_GEN_MODULATION_TYPE,
330 wl->tx_mgmt_frm_rate,
331 wl->tx_mgmt_frm_mod);
332 if (ret < 0)
333 goto out;
334
335
336 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
337 dtim_period);
338 if (ret < 0)
339 goto out;
340
341 /*
342 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
343 * locking we just sleep instead, for now
344 */
345 msleep(10);
346
347 out:
348 return ret;
349 }
350
351 static void wl1251_filter_work(struct work_struct *work)
352 {
353 struct wl1251 *wl =
354 container_of(work, struct wl1251, filter_work);
355 int ret;
356
357 mutex_lock(&wl->mutex);
358
359 if (wl->state == WL1251_STATE_OFF)
360 goto out;
361
362 ret = wl1251_ps_elp_wakeup(wl);
363 if (ret < 0)
364 goto out;
365
366 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
367 wl->dtim_period);
368 if (ret < 0)
369 goto out_sleep;
370
371 out_sleep:
372 wl1251_ps_elp_sleep(wl);
373
374 out:
375 mutex_unlock(&wl->mutex);
376 }
377
378 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
379 {
380 struct wl1251 *wl = hw->priv;
381
382 skb_queue_tail(&wl->tx_queue, skb);
383
384 /*
385 * The chip specific setup must run before the first TX packet -
386 * before that, the tx_work will not be initialized!
387 */
388
389 ieee80211_queue_work(wl->hw, &wl->tx_work);
390
391 /*
392 * The workqueue is slow to process the tx_queue and we need stop
393 * the queue here, otherwise the queue will get too long.
394 */
395 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
396 ieee80211_stop_queues(wl->hw);
397
398 /*
399 * FIXME: this is racy, the variable is not properly
400 * protected. Maybe fix this by removing the stupid
401 * variable altogether and checking the real queue state?
402 */
403 wl->tx_queue_stopped = true;
404 }
405
406 return NETDEV_TX_OK;
407 }
408
409 static int wl1251_op_start(struct ieee80211_hw *hw)
410 {
411 struct wl1251 *wl = hw->priv;
412 int ret = 0;
413
414 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
415
416 mutex_lock(&wl->mutex);
417
418 if (wl->state != WL1251_STATE_OFF) {
419 wl1251_error("cannot start because not in off state: %d",
420 wl->state);
421 ret = -EBUSY;
422 goto out;
423 }
424
425 ret = wl1251_chip_wakeup(wl);
426 if (ret < 0)
427 goto out;
428
429 ret = wl1251_boot(wl);
430 if (ret < 0)
431 goto out;
432
433 ret = wl1251_hw_init(wl);
434 if (ret < 0)
435 goto out;
436
437 ret = wl1251_acx_station_id(wl);
438 if (ret < 0)
439 goto out;
440
441 wl->state = WL1251_STATE_ON;
442
443 wl1251_info("firmware booted (%s)", wl->fw_ver);
444
445 out:
446 if (ret < 0)
447 wl1251_power_off(wl);
448
449 mutex_unlock(&wl->mutex);
450
451 return ret;
452 }
453
454 static void wl1251_op_stop(struct ieee80211_hw *hw)
455 {
456 struct wl1251 *wl = hw->priv;
457
458 wl1251_info("down");
459
460 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
461
462 mutex_lock(&wl->mutex);
463
464 WARN_ON(wl->state != WL1251_STATE_ON);
465
466 if (wl->scanning) {
467 mutex_unlock(&wl->mutex);
468 ieee80211_scan_completed(wl->hw, true);
469 mutex_lock(&wl->mutex);
470 wl->scanning = false;
471 }
472
473 wl->state = WL1251_STATE_OFF;
474
475 wl1251_disable_interrupts(wl);
476
477 mutex_unlock(&wl->mutex);
478
479 cancel_work_sync(&wl->irq_work);
480 cancel_work_sync(&wl->tx_work);
481 cancel_work_sync(&wl->filter_work);
482
483 mutex_lock(&wl->mutex);
484
485 /* let's notify MAC80211 about the remaining pending TX frames */
486 wl1251_tx_flush(wl);
487 wl1251_power_off(wl);
488
489 memset(wl->bssid, 0, ETH_ALEN);
490 wl->listen_int = 1;
491 wl->bss_type = MAX_BSS_TYPE;
492
493 wl->data_in_count = 0;
494 wl->rx_counter = 0;
495 wl->rx_handled = 0;
496 wl->rx_current_buffer = 0;
497 wl->rx_last_id = 0;
498 wl->next_tx_complete = 0;
499 wl->elp = false;
500 wl->psm = 0;
501 wl->tx_queue_stopped = false;
502 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
503 wl->channel = WL1251_DEFAULT_CHANNEL;
504
505 wl1251_debugfs_reset(wl);
506
507 mutex_unlock(&wl->mutex);
508 }
509
510 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
511 struct ieee80211_if_init_conf *conf)
512 {
513 struct wl1251 *wl = hw->priv;
514 int ret = 0;
515
516 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
517 conf->type, conf->mac_addr);
518
519 mutex_lock(&wl->mutex);
520 if (wl->vif) {
521 ret = -EBUSY;
522 goto out;
523 }
524
525 wl->vif = conf->vif;
526
527 switch (conf->type) {
528 case NL80211_IFTYPE_STATION:
529 wl->bss_type = BSS_TYPE_STA_BSS;
530 break;
531 case NL80211_IFTYPE_ADHOC:
532 wl->bss_type = BSS_TYPE_IBSS;
533 break;
534 default:
535 ret = -EOPNOTSUPP;
536 goto out;
537 }
538
539 if (memcmp(wl->mac_addr, conf->mac_addr, ETH_ALEN)) {
540 memcpy(wl->mac_addr, conf->mac_addr, ETH_ALEN);
541 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
542 ret = wl1251_acx_station_id(wl);
543 if (ret < 0)
544 goto out;
545 }
546
547 out:
548 mutex_unlock(&wl->mutex);
549 return ret;
550 }
551
552 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
553 struct ieee80211_if_init_conf *conf)
554 {
555 struct wl1251 *wl = hw->priv;
556
557 mutex_lock(&wl->mutex);
558 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
559 wl->vif = NULL;
560 mutex_unlock(&wl->mutex);
561 }
562
563 static int wl1251_build_null_data(struct wl1251 *wl)
564 {
565 struct wl12xx_null_data_template template;
566
567 if (!is_zero_ether_addr(wl->bssid)) {
568 memcpy(template.header.da, wl->bssid, ETH_ALEN);
569 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
570 } else {
571 memset(template.header.da, 0xff, ETH_ALEN);
572 memset(template.header.bssid, 0xff, ETH_ALEN);
573 }
574
575 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
576 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
577 IEEE80211_STYPE_NULLFUNC);
578
579 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
580 sizeof(template));
581
582 }
583
584 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
585 {
586 struct wl12xx_ps_poll_template template;
587
588 memcpy(template.bssid, wl->bssid, ETH_ALEN);
589 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
590
591 /* aid in PS-Poll has its two MSBs each set to 1 */
592 template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
593
594 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
595
596 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
597 sizeof(template));
598
599 }
600
601 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
602 {
603 struct wl1251 *wl = hw->priv;
604 struct ieee80211_conf *conf = &hw->conf;
605 int channel, ret = 0;
606
607 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
608
609 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
610 channel,
611 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
612 conf->power_level);
613
614 mutex_lock(&wl->mutex);
615
616 ret = wl1251_ps_elp_wakeup(wl);
617 if (ret < 0)
618 goto out;
619
620 if (channel != wl->channel) {
621 wl->channel = channel;
622
623 ret = wl1251_join(wl, wl->bss_type, wl->channel,
624 wl->beacon_int, wl->dtim_period);
625 if (ret < 0)
626 goto out_sleep;
627 }
628
629 ret = wl1251_build_null_data(wl);
630 if (ret < 0)
631 goto out_sleep;
632
633 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
634 wl1251_debug(DEBUG_PSM, "psm enabled");
635
636 wl->psm_requested = true;
637
638 /*
639 * We enter PSM only if we're already associated.
640 * If we're not, we'll enter it when joining an SSID,
641 * through the bss_info_changed() hook.
642 */
643 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
644 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
645 wl->psm_requested) {
646 wl1251_debug(DEBUG_PSM, "psm disabled");
647
648 wl->psm_requested = false;
649
650 if (wl->psm)
651 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
652 }
653
654 if (conf->power_level != wl->power_level) {
655 ret = wl1251_acx_tx_power(wl, conf->power_level);
656 if (ret < 0)
657 goto out;
658
659 wl->power_level = conf->power_level;
660 }
661
662 out_sleep:
663 wl1251_ps_elp_sleep(wl);
664
665 out:
666 mutex_unlock(&wl->mutex);
667
668 return ret;
669 }
670
671 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
672 FIF_ALLMULTI | \
673 FIF_FCSFAIL | \
674 FIF_BCN_PRBRESP_PROMISC | \
675 FIF_CONTROL | \
676 FIF_OTHER_BSS)
677
678 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
679 unsigned int changed,
680 unsigned int *total,u64 multicast)
681 {
682 struct wl1251 *wl = hw->priv;
683
684 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
685
686 *total &= WL1251_SUPPORTED_FILTERS;
687 changed &= WL1251_SUPPORTED_FILTERS;
688
689 if (changed == 0)
690 /* no filters which we support changed */
691 return;
692
693 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
694
695 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
696 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
697
698 if (*total & FIF_PROMISC_IN_BSS) {
699 wl->rx_config |= CFG_BSSID_FILTER_EN;
700 wl->rx_config |= CFG_RX_ALL_GOOD;
701 }
702 if (*total & FIF_ALLMULTI)
703 /*
704 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
705 * all multicast frames
706 */
707 wl->rx_config &= ~CFG_MC_FILTER_EN;
708 if (*total & FIF_FCSFAIL)
709 wl->rx_filter |= CFG_RX_FCS_ERROR;
710 if (*total & FIF_BCN_PRBRESP_PROMISC) {
711 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
712 wl->rx_config &= ~CFG_SSID_FILTER_EN;
713 }
714 if (*total & FIF_CONTROL)
715 wl->rx_filter |= CFG_RX_CTL_EN;
716 if (*total & FIF_OTHER_BSS)
717 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
718
719 /*
720 * FIXME: workqueues need to be properly cancelled on stop(), for
721 * now let's just disable changing the filter settings. They will
722 * be updated any on config().
723 */
724 /* schedule_work(&wl->filter_work); */
725 }
726
727 /* HW encryption */
728 static int wl1251_set_key_type(struct wl1251 *wl,
729 struct wl1251_cmd_set_keys *key,
730 enum set_key_cmd cmd,
731 struct ieee80211_key_conf *mac80211_key,
732 const u8 *addr)
733 {
734 switch (mac80211_key->alg) {
735 case ALG_WEP:
736 if (is_broadcast_ether_addr(addr))
737 key->key_type = KEY_WEP_DEFAULT;
738 else
739 key->key_type = KEY_WEP_ADDR;
740
741 mac80211_key->hw_key_idx = mac80211_key->keyidx;
742 break;
743 case ALG_TKIP:
744 if (is_broadcast_ether_addr(addr))
745 key->key_type = KEY_TKIP_MIC_GROUP;
746 else
747 key->key_type = KEY_TKIP_MIC_PAIRWISE;
748
749 mac80211_key->hw_key_idx = mac80211_key->keyidx;
750 break;
751 case ALG_CCMP:
752 if (is_broadcast_ether_addr(addr))
753 key->key_type = KEY_AES_GROUP;
754 else
755 key->key_type = KEY_AES_PAIRWISE;
756 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
757 break;
758 default:
759 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
760 return -EOPNOTSUPP;
761 }
762
763 return 0;
764 }
765
766 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
767 struct ieee80211_vif *vif,
768 struct ieee80211_sta *sta,
769 struct ieee80211_key_conf *key)
770 {
771 struct wl1251 *wl = hw->priv;
772 struct wl1251_cmd_set_keys *wl_cmd;
773 const u8 *addr;
774 int ret;
775
776 static const u8 bcast_addr[ETH_ALEN] =
777 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
778
779 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
780
781 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
782 if (!wl_cmd) {
783 ret = -ENOMEM;
784 goto out;
785 }
786
787 addr = sta ? sta->addr : bcast_addr;
788
789 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
790 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
791 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
792 key->alg, key->keyidx, key->keylen, key->flags);
793 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
794
795 if (is_zero_ether_addr(addr)) {
796 /* We dont support TX only encryption */
797 ret = -EOPNOTSUPP;
798 goto out;
799 }
800
801 mutex_lock(&wl->mutex);
802
803 ret = wl1251_ps_elp_wakeup(wl);
804 if (ret < 0)
805 goto out_unlock;
806
807 switch (cmd) {
808 case SET_KEY:
809 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
810 break;
811 case DISABLE_KEY:
812 wl_cmd->key_action = KEY_REMOVE;
813 break;
814 default:
815 wl1251_error("Unsupported key cmd 0x%x", cmd);
816 break;
817 }
818
819 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
820 if (ret < 0) {
821 wl1251_error("Set KEY type failed");
822 goto out_sleep;
823 }
824
825 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
826 memcpy(wl_cmd->addr, addr, ETH_ALEN);
827
828 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
829 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
830 /*
831 * We get the key in the following form:
832 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
833 * but the target is expecting:
834 * TKIP - RX MIC - TX MIC
835 */
836 memcpy(wl_cmd->key, key->key, 16);
837 memcpy(wl_cmd->key + 16, key->key + 24, 8);
838 memcpy(wl_cmd->key + 24, key->key + 16, 8);
839
840 } else {
841 memcpy(wl_cmd->key, key->key, key->keylen);
842 }
843 wl_cmd->key_size = key->keylen;
844
845 wl_cmd->id = key->keyidx;
846 wl_cmd->ssid_profile = 0;
847
848 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
849
850 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
851 if (ret < 0) {
852 wl1251_warning("could not set keys");
853 goto out_sleep;
854 }
855
856 out_sleep:
857 wl1251_ps_elp_sleep(wl);
858
859 out_unlock:
860 mutex_unlock(&wl->mutex);
861
862 out:
863 kfree(wl_cmd);
864
865 return ret;
866 }
867
868 static int wl1251_build_basic_rates(char *rates)
869 {
870 u8 index = 0;
871
872 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
873 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
874 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
875 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
876
877 return index;
878 }
879
880 static int wl1251_build_extended_rates(char *rates)
881 {
882 u8 index = 0;
883
884 rates[index++] = IEEE80211_OFDM_RATE_6MB;
885 rates[index++] = IEEE80211_OFDM_RATE_9MB;
886 rates[index++] = IEEE80211_OFDM_RATE_12MB;
887 rates[index++] = IEEE80211_OFDM_RATE_18MB;
888 rates[index++] = IEEE80211_OFDM_RATE_24MB;
889 rates[index++] = IEEE80211_OFDM_RATE_36MB;
890 rates[index++] = IEEE80211_OFDM_RATE_48MB;
891 rates[index++] = IEEE80211_OFDM_RATE_54MB;
892
893 return index;
894 }
895
896
897 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
898 {
899 struct wl12xx_probe_req_template template;
900 struct wl12xx_ie_rates *rates;
901 char *ptr;
902 u16 size;
903
904 ptr = (char *)&template;
905 size = sizeof(struct ieee80211_header);
906
907 memset(template.header.da, 0xff, ETH_ALEN);
908 memset(template.header.bssid, 0xff, ETH_ALEN);
909 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
910 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
911
912 /* IEs */
913 /* SSID */
914 template.ssid.header.id = WLAN_EID_SSID;
915 template.ssid.header.len = ssid_len;
916 if (ssid_len && ssid)
917 memcpy(template.ssid.ssid, ssid, ssid_len);
918 size += sizeof(struct wl12xx_ie_header) + ssid_len;
919 ptr += size;
920
921 /* Basic Rates */
922 rates = (struct wl12xx_ie_rates *)ptr;
923 rates->header.id = WLAN_EID_SUPP_RATES;
924 rates->header.len = wl1251_build_basic_rates(rates->rates);
925 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
926 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
927
928 /* Extended rates */
929 rates = (struct wl12xx_ie_rates *)ptr;
930 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
931 rates->header.len = wl1251_build_extended_rates(rates->rates);
932 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
933
934 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
935
936 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
937 size);
938 }
939
940 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
941 u8 active_scan, u8 high_prio, u8 num_channels,
942 u8 probe_requests)
943 {
944 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
945 struct cmd_scan *params = NULL;
946 int i, ret;
947 u16 scan_options = 0;
948
949 if (wl->scanning)
950 return -EINVAL;
951
952 params = kzalloc(sizeof(*params), GFP_KERNEL);
953 if (!params)
954 return -ENOMEM;
955
956 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
957 params->params.rx_filter_options =
958 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
959
960 /* High priority scan */
961 if (!active_scan)
962 scan_options |= SCAN_PASSIVE;
963 if (high_prio)
964 scan_options |= SCAN_PRIORITY_HIGH;
965 params->params.scan_options = scan_options;
966
967 params->params.num_channels = num_channels;
968 params->params.num_probe_requests = probe_requests;
969 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
970 params->params.tid_trigger = 0;
971
972 for (i = 0; i < num_channels; i++) {
973 params->channels[i].min_duration = cpu_to_le32(30000);
974 params->channels[i].max_duration = cpu_to_le32(60000);
975 memset(&params->channels[i].bssid_lsb, 0xff, 4);
976 memset(&params->channels[i].bssid_msb, 0xff, 2);
977 params->channels[i].early_termination = 0;
978 params->channels[i].tx_power_att = 0;
979 params->channels[i].channel = i + 1;
980 memset(params->channels[i].pad, 0, 3);
981 }
982
983 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
984 memset(&params->channels[i], 0,
985 sizeof(struct basic_scan_channel_parameters));
986
987 if (len && ssid) {
988 params->params.ssid_len = len;
989 memcpy(params->params.ssid, ssid, len);
990 } else {
991 params->params.ssid_len = 0;
992 memset(params->params.ssid, 0, 32);
993 }
994
995 ret = wl1251_build_probe_req(wl, ssid, len);
996 if (ret < 0) {
997 wl1251_error("PROBE request template failed");
998 goto out;
999 }
1000
1001 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
1002 if (!trigger)
1003 goto out;
1004
1005 trigger->timeout = 0;
1006
1007 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
1008 sizeof(*trigger));
1009 if (ret < 0) {
1010 wl1251_error("trigger scan to failed for hw scan");
1011 goto out;
1012 }
1013
1014 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
1015
1016 wl->scanning = true;
1017
1018 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
1019 if (ret < 0)
1020 wl1251_error("SCAN failed");
1021
1022 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
1023
1024 if (params->header.status != CMD_STATUS_SUCCESS) {
1025 wl1251_error("TEST command answer error: %d",
1026 params->header.status);
1027 wl->scanning = false;
1028 ret = -EIO;
1029 goto out;
1030 }
1031
1032 out:
1033 kfree(params);
1034 return ret;
1035
1036 }
1037
1038 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1039 struct cfg80211_scan_request *req)
1040 {
1041 struct wl1251 *wl = hw->priv;
1042 int ret;
1043 u8 *ssid = NULL;
1044 size_t ssid_len = 0;
1045
1046 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1047
1048 if (req->n_ssids) {
1049 ssid = req->ssids[0].ssid;
1050 ssid_len = req->ssids[0].ssid_len;
1051 }
1052
1053 mutex_lock(&wl->mutex);
1054
1055 ret = wl1251_ps_elp_wakeup(wl);
1056 if (ret < 0)
1057 goto out;
1058
1059 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1060
1061 wl1251_ps_elp_sleep(wl);
1062
1063 out:
1064 mutex_unlock(&wl->mutex);
1065
1066 return ret;
1067 }
1068
1069 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1070 {
1071 struct wl1251 *wl = hw->priv;
1072 int ret;
1073
1074 mutex_lock(&wl->mutex);
1075
1076 ret = wl1251_ps_elp_wakeup(wl);
1077 if (ret < 0)
1078 goto out;
1079
1080 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1081 if (ret < 0)
1082 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1083
1084 wl1251_ps_elp_sleep(wl);
1085
1086 out:
1087 mutex_unlock(&wl->mutex);
1088
1089 return ret;
1090 }
1091
1092 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1093 struct ieee80211_vif *vif,
1094 struct ieee80211_bss_conf *bss_conf,
1095 u32 changed)
1096 {
1097 enum wl1251_cmd_ps_mode mode;
1098 struct wl1251 *wl = hw->priv;
1099 struct sk_buff *beacon;
1100 int ret;
1101
1102 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1103
1104 mutex_lock(&wl->mutex);
1105
1106 ret = wl1251_ps_elp_wakeup(wl);
1107 if (ret < 0)
1108 goto out;
1109
1110 if (changed & BSS_CHANGED_ASSOC) {
1111 if (bss_conf->assoc) {
1112 wl->beacon_int = bss_conf->beacon_int;
1113 wl->dtim_period = bss_conf->dtim_period;
1114
1115 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
1116 wl->dtim_period);
1117 wl->aid = bss_conf->aid;
1118
1119 ret = wl1251_build_ps_poll(wl, wl->aid);
1120 if (ret < 0)
1121 goto out_sleep;
1122
1123 ret = wl1251_acx_aid(wl, wl->aid);
1124 if (ret < 0)
1125 goto out_sleep;
1126
1127 /* If we want to go in PSM but we're not there yet */
1128 if (wl->psm_requested && !wl->psm) {
1129 mode = STATION_POWER_SAVE_MODE;
1130 ret = wl1251_ps_set_mode(wl, mode);
1131 if (ret < 0)
1132 goto out_sleep;
1133 }
1134 } else {
1135 /* use defaults when not associated */
1136 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1137 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1138 }
1139 }
1140 if (changed & BSS_CHANGED_ERP_SLOT) {
1141 if (bss_conf->use_short_slot)
1142 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1143 else
1144 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1145 if (ret < 0) {
1146 wl1251_warning("Set slot time failed %d", ret);
1147 goto out_sleep;
1148 }
1149 }
1150
1151 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1152 if (bss_conf->use_short_preamble)
1153 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1154 else
1155 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1156 }
1157
1158 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1159 if (bss_conf->use_cts_prot)
1160 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1161 else
1162 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1163 if (ret < 0) {
1164 wl1251_warning("Set ctsprotect failed %d", ret);
1165 goto out;
1166 }
1167 }
1168
1169 if (changed & BSS_CHANGED_BSSID) {
1170 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1171
1172 ret = wl1251_build_null_data(wl);
1173 if (ret < 0)
1174 goto out;
1175
1176 if (wl->bss_type != BSS_TYPE_IBSS) {
1177 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1178 wl->beacon_int, wl->dtim_period);
1179 if (ret < 0)
1180 goto out_sleep;
1181 wl1251_warning("Set ctsprotect failed %d", ret);
1182 goto out_sleep;
1183 }
1184 }
1185
1186 if (changed & BSS_CHANGED_BEACON) {
1187 beacon = ieee80211_beacon_get(hw, vif);
1188 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1189 beacon->len);
1190
1191 if (ret < 0) {
1192 dev_kfree_skb(beacon);
1193 goto out;
1194 }
1195
1196 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1197 beacon->len);
1198
1199 dev_kfree_skb(beacon);
1200
1201 if (ret < 0)
1202 goto out;
1203
1204 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1205 wl->channel, wl->dtim_period);
1206
1207 if (ret < 0)
1208 goto out;
1209 }
1210
1211 out_sleep:
1212 wl1251_ps_elp_sleep(wl);
1213
1214 out:
1215 mutex_unlock(&wl->mutex);
1216 }
1217
1218
1219 /* can't be const, mac80211 writes to this */
1220 static struct ieee80211_rate wl1251_rates[] = {
1221 { .bitrate = 10,
1222 .hw_value = 0x1,
1223 .hw_value_short = 0x1, },
1224 { .bitrate = 20,
1225 .hw_value = 0x2,
1226 .hw_value_short = 0x2,
1227 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1228 { .bitrate = 55,
1229 .hw_value = 0x4,
1230 .hw_value_short = 0x4,
1231 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1232 { .bitrate = 110,
1233 .hw_value = 0x20,
1234 .hw_value_short = 0x20,
1235 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1236 { .bitrate = 60,
1237 .hw_value = 0x8,
1238 .hw_value_short = 0x8, },
1239 { .bitrate = 90,
1240 .hw_value = 0x10,
1241 .hw_value_short = 0x10, },
1242 { .bitrate = 120,
1243 .hw_value = 0x40,
1244 .hw_value_short = 0x40, },
1245 { .bitrate = 180,
1246 .hw_value = 0x80,
1247 .hw_value_short = 0x80, },
1248 { .bitrate = 240,
1249 .hw_value = 0x200,
1250 .hw_value_short = 0x200, },
1251 { .bitrate = 360,
1252 .hw_value = 0x400,
1253 .hw_value_short = 0x400, },
1254 { .bitrate = 480,
1255 .hw_value = 0x800,
1256 .hw_value_short = 0x800, },
1257 { .bitrate = 540,
1258 .hw_value = 0x1000,
1259 .hw_value_short = 0x1000, },
1260 };
1261
1262 /* can't be const, mac80211 writes to this */
1263 static struct ieee80211_channel wl1251_channels[] = {
1264 { .hw_value = 1, .center_freq = 2412},
1265 { .hw_value = 2, .center_freq = 2417},
1266 { .hw_value = 3, .center_freq = 2422},
1267 { .hw_value = 4, .center_freq = 2427},
1268 { .hw_value = 5, .center_freq = 2432},
1269 { .hw_value = 6, .center_freq = 2437},
1270 { .hw_value = 7, .center_freq = 2442},
1271 { .hw_value = 8, .center_freq = 2447},
1272 { .hw_value = 9, .center_freq = 2452},
1273 { .hw_value = 10, .center_freq = 2457},
1274 { .hw_value = 11, .center_freq = 2462},
1275 { .hw_value = 12, .center_freq = 2467},
1276 { .hw_value = 13, .center_freq = 2472},
1277 };
1278
1279 /* can't be const, mac80211 writes to this */
1280 static struct ieee80211_supported_band wl1251_band_2ghz = {
1281 .channels = wl1251_channels,
1282 .n_channels = ARRAY_SIZE(wl1251_channels),
1283 .bitrates = wl1251_rates,
1284 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1285 };
1286
1287 static const struct ieee80211_ops wl1251_ops = {
1288 .start = wl1251_op_start,
1289 .stop = wl1251_op_stop,
1290 .add_interface = wl1251_op_add_interface,
1291 .remove_interface = wl1251_op_remove_interface,
1292 .config = wl1251_op_config,
1293 .configure_filter = wl1251_op_configure_filter,
1294 .tx = wl1251_op_tx,
1295 .set_key = wl1251_op_set_key,
1296 .hw_scan = wl1251_op_hw_scan,
1297 .bss_info_changed = wl1251_op_bss_info_changed,
1298 .set_rts_threshold = wl1251_op_set_rts_threshold,
1299 };
1300
1301 static int wl1251_register_hw(struct wl1251 *wl)
1302 {
1303 int ret;
1304
1305 if (wl->mac80211_registered)
1306 return 0;
1307
1308 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1309
1310 ret = ieee80211_register_hw(wl->hw);
1311 if (ret < 0) {
1312 wl1251_error("unable to register mac80211 hw: %d", ret);
1313 return ret;
1314 }
1315
1316 wl->mac80211_registered = true;
1317
1318 wl1251_notice("loaded");
1319
1320 return 0;
1321 }
1322
1323 int wl1251_init_ieee80211(struct wl1251 *wl)
1324 {
1325 int ret;
1326
1327 /* The tx descriptor buffer and the TKIP space */
1328 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1329 + WL1251_TKIP_IV_SPACE;
1330
1331 /* unit us */
1332 /* FIXME: find a proper value */
1333 wl->hw->channel_change_time = 10000;
1334
1335 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1336 IEEE80211_HW_NOISE_DBM |
1337 IEEE80211_HW_SUPPORTS_PS |
1338 IEEE80211_HW_BEACON_FILTER;
1339
1340 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1341 wl->hw->wiphy->max_scan_ssids = 1;
1342 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1343
1344 ret = wl1251_register_hw(wl);
1345 if (ret)
1346 goto out;
1347
1348 wl1251_debugfs_init(wl);
1349 wl1251_notice("initialized");
1350
1351 ret = 0;
1352
1353 out:
1354 return ret;
1355 }
1356 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1357
1358 struct ieee80211_hw *wl1251_alloc_hw(void)
1359 {
1360 struct ieee80211_hw *hw;
1361 struct wl1251 *wl;
1362 int i;
1363 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1364
1365 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1366 if (!hw) {
1367 wl1251_error("could not alloc ieee80211_hw");
1368 return ERR_PTR(-ENOMEM);
1369 }
1370
1371 wl = hw->priv;
1372 memset(wl, 0, sizeof(*wl));
1373
1374 wl->hw = hw;
1375
1376 wl->data_in_count = 0;
1377
1378 skb_queue_head_init(&wl->tx_queue);
1379
1380 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1381 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1382 wl->channel = WL1251_DEFAULT_CHANNEL;
1383 wl->scanning = false;
1384 wl->default_key = 0;
1385 wl->listen_int = 1;
1386 wl->rx_counter = 0;
1387 wl->rx_handled = 0;
1388 wl->rx_current_buffer = 0;
1389 wl->rx_last_id = 0;
1390 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1391 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1392 wl->elp = false;
1393 wl->psm = 0;
1394 wl->psm_requested = false;
1395 wl->tx_queue_stopped = false;
1396 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1397 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1398 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1399 wl->vif = NULL;
1400
1401 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1402 wl->tx_frames[i] = NULL;
1403
1404 wl->next_tx_complete = 0;
1405
1406 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1407 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1408
1409 /*
1410 * In case our MAC address is not correctly set,
1411 * we use a random but Nokia MAC.
1412 */
1413 memcpy(wl->mac_addr, nokia_oui, 3);
1414 get_random_bytes(wl->mac_addr + 3, 3);
1415
1416 wl->state = WL1251_STATE_OFF;
1417 mutex_init(&wl->mutex);
1418
1419 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1420 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1421
1422 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1423 if (!wl->rx_descriptor) {
1424 wl1251_error("could not allocate memory for rx descriptor");
1425 ieee80211_free_hw(hw);
1426 return ERR_PTR(-ENOMEM);
1427 }
1428
1429 return hw;
1430 }
1431 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1432
1433 int wl1251_free_hw(struct wl1251 *wl)
1434 {
1435 ieee80211_unregister_hw(wl->hw);
1436
1437 wl1251_debugfs_exit(wl);
1438
1439 kfree(wl->target_mem_map);
1440 kfree(wl->data_path);
1441 vfree(wl->fw);
1442 wl->fw = NULL;
1443 kfree(wl->nvs);
1444 wl->nvs = NULL;
1445
1446 kfree(wl->rx_descriptor);
1447 wl->rx_descriptor = NULL;
1448
1449 ieee80211_free_hw(wl->hw);
1450
1451 return 0;
1452 }
1453 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1454
1455 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1456 MODULE_LICENSE("GPL");
1457 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1458 MODULE_ALIAS("spi:wl1251");
1459 MODULE_FIRMWARE(WL1251_FW_NAME);
(deprecated) Btrfs devel tree