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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / net / wireless / wl12xx / wl1251_main.c
blob5004d6c66bd8701e66df59ea1514741b1c52a092
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 #include <linux/slab.h>
33
34 #include "wl1251.h"
35 #include "wl12xx_80211.h"
36 #include "wl1251_reg.h"
37 #include "wl1251_io.h"
38 #include "wl1251_cmd.h"
39 #include "wl1251_event.h"
40 #include "wl1251_tx.h"
41 #include "wl1251_rx.h"
42 #include "wl1251_ps.h"
43 #include "wl1251_init.h"
44 #include "wl1251_debugfs.h"
45 #include "wl1251_boot.h"
46
47 void wl1251_enable_interrupts(struct wl1251 *wl)
48 {
49 wl->if_ops->enable_irq(wl);
50 }
51
52 void wl1251_disable_interrupts(struct wl1251 *wl)
53 {
54 wl->if_ops->disable_irq(wl);
55 }
56
57 static void wl1251_power_off(struct wl1251 *wl)
58 {
59 wl->set_power(false);
60 }
61
62 static void wl1251_power_on(struct wl1251 *wl)
63 {
64 wl->set_power(true);
65 }
66
67 static int wl1251_fetch_firmware(struct wl1251 *wl)
68 {
69 const struct firmware *fw;
70 struct device *dev = wiphy_dev(wl->hw->wiphy);
71 int ret;
72
73 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
74
75 if (ret < 0) {
76 wl1251_error("could not get firmware: %d", ret);
77 return ret;
78 }
79
80 if (fw->size % 4) {
81 wl1251_error("firmware size is not multiple of 32 bits: %zu",
82 fw->size);
83 ret = -EILSEQ;
84 goto out;
85 }
86
87 wl->fw_len = fw->size;
88 wl->fw = vmalloc(wl->fw_len);
89
90 if (!wl->fw) {
91 wl1251_error("could not allocate memory for the firmware");
92 ret = -ENOMEM;
93 goto out;
94 }
95
96 memcpy(wl->fw, fw->data, wl->fw_len);
97
98 ret = 0;
99
100 out:
101 release_firmware(fw);
102
103 return ret;
104 }
105
106 static int wl1251_fetch_nvs(struct wl1251 *wl)
107 {
108 const struct firmware *fw;
109 struct device *dev = wiphy_dev(wl->hw->wiphy);
110 int ret;
111
112 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
113
114 if (ret < 0) {
115 wl1251_error("could not get nvs file: %d", ret);
116 return ret;
117 }
118
119 if (fw->size % 4) {
120 wl1251_error("nvs size is not multiple of 32 bits: %zu",
121 fw->size);
122 ret = -EILSEQ;
123 goto out;
124 }
125
126 wl->nvs_len = fw->size;
127 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
128
129 if (!wl->nvs) {
130 wl1251_error("could not allocate memory for the nvs file");
131 ret = -ENOMEM;
132 goto out;
133 }
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_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read_elp(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_PG11:
187 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
188 wl->chip_id);
189 break;
190 case CHIP_ID_1251_PG10:
191 default:
192 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
193 ret = -ENODEV;
194 goto out;
195 }
196
197 if (wl->fw == NULL) {
198 ret = wl1251_fetch_firmware(wl);
199 if (ret < 0)
200 goto out;
201 }
202
203 if (wl->nvs == NULL && !wl->use_eeprom) {
204 /* No NVS from netlink, try to get it from the filesystem */
205 ret = wl1251_fetch_nvs(wl);
206 if (ret < 0)
207 goto out;
208 }
209
210 out:
211 return ret;
212 }
213
214 #define WL1251_IRQ_LOOP_COUNT 10
215 static void wl1251_irq_work(struct work_struct *work)
216 {
217 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
218 struct wl1251 *wl =
219 container_of(work, struct wl1251, irq_work);
220 int ret;
221
222 mutex_lock(&wl->mutex);
223
224 wl1251_debug(DEBUG_IRQ, "IRQ work");
225
226 if (wl->state == WL1251_STATE_OFF)
227 goto out;
228
229 ret = wl1251_ps_elp_wakeup(wl);
230 if (ret < 0)
231 goto out;
232
233 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
234
235 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
236 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
237
238 do {
239 if (wl->data_path) {
240 wl->rx_counter = wl1251_mem_read32(
241 wl, wl->data_path->rx_control_addr);
242
243 /* We handle a frmware bug here */
244 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
245 case 0:
246 wl1251_debug(DEBUG_IRQ,
247 "RX: FW and host in sync");
248 intr &= ~WL1251_ACX_INTR_RX0_DATA;
249 intr &= ~WL1251_ACX_INTR_RX1_DATA;
250 break;
251 case 1:
252 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
253 intr |= WL1251_ACX_INTR_RX0_DATA;
254 intr &= ~WL1251_ACX_INTR_RX1_DATA;
255 break;
256 case 2:
257 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
258 intr |= WL1251_ACX_INTR_RX0_DATA;
259 intr |= WL1251_ACX_INTR_RX1_DATA;
260 break;
261 default:
262 wl1251_warning(
263 "RX: FW and host out of sync: %d",
264 wl->rx_counter - wl->rx_handled);
265 break;
266 }
267
268 wl->rx_handled = wl->rx_counter;
269
270 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
271 wl->rx_counter);
272 }
273
274 intr &= wl->intr_mask;
275
276 if (intr == 0) {
277 wl1251_debug(DEBUG_IRQ, "INTR is 0");
278 goto out_sleep;
279 }
280
281 if (intr & WL1251_ACX_INTR_RX0_DATA) {
282 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
283 wl1251_rx(wl);
284 }
285
286 if (intr & WL1251_ACX_INTR_RX1_DATA) {
287 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
288 wl1251_rx(wl);
289 }
290
291 if (intr & WL1251_ACX_INTR_TX_RESULT) {
292 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
293 wl1251_tx_complete(wl);
294 }
295
296 if (intr & (WL1251_ACX_INTR_EVENT_A |
297 WL1251_ACX_INTR_EVENT_B)) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
299 intr);
300 if (intr & WL1251_ACX_INTR_EVENT_A)
301 wl1251_event_handle(wl, 0);
302 else
303 wl1251_event_handle(wl, 1);
304 }
305
306 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
307 wl1251_debug(DEBUG_IRQ,
308 "WL1251_ACX_INTR_INIT_COMPLETE");
309
310 if (--ctr == 0)
311 break;
312
313 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
314 } while (intr);
315
316 out_sleep:
317 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
318 wl1251_ps_elp_sleep(wl);
319
320 out:
321 mutex_unlock(&wl->mutex);
322 }
323
324 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
325 u16 beacon_interval, u8 dtim_period)
326 {
327 int ret;
328
329 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
330 DEFAULT_HW_GEN_MODULATION_TYPE,
331 wl->tx_mgmt_frm_rate,
332 wl->tx_mgmt_frm_mod);
333 if (ret < 0)
334 goto out;
335
336
337 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
338 dtim_period);
339 if (ret < 0)
340 goto out;
341
342 msleep(10);
343
344 out:
345 return ret;
346 }
347
348 static void wl1251_filter_work(struct work_struct *work)
349 {
350 struct wl1251 *wl =
351 container_of(work, struct wl1251, filter_work);
352 int ret;
353
354 mutex_lock(&wl->mutex);
355
356 if (wl->state == WL1251_STATE_OFF)
357 goto out;
358
359 ret = wl1251_ps_elp_wakeup(wl);
360 if (ret < 0)
361 goto out;
362
363 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
364 wl->dtim_period);
365 if (ret < 0)
366 goto out_sleep;
367
368 out_sleep:
369 wl1251_ps_elp_sleep(wl);
370
371 out:
372 mutex_unlock(&wl->mutex);
373 }
374
375 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
376 {
377 struct wl1251 *wl = hw->priv;
378
379 skb_queue_tail(&wl->tx_queue, skb);
380
381 /*
382 * The chip specific setup must run before the first TX packet -
383 * before that, the tx_work will not be initialized!
384 */
385
386 ieee80211_queue_work(wl->hw, &wl->tx_work);
387
388 /*
389 * The workqueue is slow to process the tx_queue and we need stop
390 * the queue here, otherwise the queue will get too long.
391 */
392 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
393 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
394 ieee80211_stop_queues(wl->hw);
395
396 wl->tx_queue_stopped = true;
397 }
398
399 return NETDEV_TX_OK;
400 }
401
402 static int wl1251_op_start(struct ieee80211_hw *hw)
403 {
404 struct wl1251 *wl = hw->priv;
405 struct wiphy *wiphy = hw->wiphy;
406 int ret = 0;
407
408 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
409
410 mutex_lock(&wl->mutex);
411
412 if (wl->state != WL1251_STATE_OFF) {
413 wl1251_error("cannot start because not in off state: %d",
414 wl->state);
415 ret = -EBUSY;
416 goto out;
417 }
418
419 ret = wl1251_chip_wakeup(wl);
420 if (ret < 0)
421 goto out;
422
423 ret = wl1251_boot(wl);
424 if (ret < 0)
425 goto out;
426
427 ret = wl1251_hw_init(wl);
428 if (ret < 0)
429 goto out;
430
431 ret = wl1251_acx_station_id(wl);
432 if (ret < 0)
433 goto out;
434
435 wl->state = WL1251_STATE_ON;
436
437 wl1251_info("firmware booted (%s)", wl->fw_ver);
438
439 /* update hw/fw version info in wiphy struct */
440 wiphy->hw_version = wl->chip_id;
441 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
442
443 out:
444 if (ret < 0)
445 wl1251_power_off(wl);
446
447 mutex_unlock(&wl->mutex);
448
449 return ret;
450 }
451
452 static void wl1251_op_stop(struct ieee80211_hw *hw)
453 {
454 struct wl1251 *wl = hw->priv;
455
456 wl1251_info("down");
457
458 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
459
460 mutex_lock(&wl->mutex);
461
462 WARN_ON(wl->state != WL1251_STATE_ON);
463
464 if (wl->scanning) {
465 mutex_unlock(&wl->mutex);
466 ieee80211_scan_completed(wl->hw, true);
467 mutex_lock(&wl->mutex);
468 wl->scanning = false;
469 }
470
471 wl->state = WL1251_STATE_OFF;
472
473 wl1251_disable_interrupts(wl);
474
475 mutex_unlock(&wl->mutex);
476
477 cancel_work_sync(&wl->irq_work);
478 cancel_work_sync(&wl->tx_work);
479 cancel_work_sync(&wl->filter_work);
480
481 mutex_lock(&wl->mutex);
482
483 /* let's notify MAC80211 about the remaining pending TX frames */
484 wl1251_tx_flush(wl);
485 wl1251_power_off(wl);
486
487 memset(wl->bssid, 0, ETH_ALEN);
488 wl->listen_int = 1;
489 wl->bss_type = MAX_BSS_TYPE;
490
491 wl->data_in_count = 0;
492 wl->rx_counter = 0;
493 wl->rx_handled = 0;
494 wl->rx_current_buffer = 0;
495 wl->rx_last_id = 0;
496 wl->next_tx_complete = 0;
497 wl->elp = false;
498 wl->psm = 0;
499 wl->tx_queue_stopped = false;
500 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
501 wl->channel = WL1251_DEFAULT_CHANNEL;
502
503 wl1251_debugfs_reset(wl);
504
505 mutex_unlock(&wl->mutex);
506 }
507
508 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
509 struct ieee80211_vif *vif)
510 {
511 struct wl1251 *wl = hw->priv;
512 int ret = 0;
513
514 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
515 vif->type, vif->addr);
516
517 mutex_lock(&wl->mutex);
518 if (wl->vif) {
519 ret = -EBUSY;
520 goto out;
521 }
522
523 wl->vif = vif;
524
525 switch (vif->type) {
526 case NL80211_IFTYPE_STATION:
527 wl->bss_type = BSS_TYPE_STA_BSS;
528 break;
529 case NL80211_IFTYPE_ADHOC:
530 wl->bss_type = BSS_TYPE_IBSS;
531 break;
532 default:
533 ret = -EOPNOTSUPP;
534 goto out;
535 }
536
537 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
538 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
539 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
540 ret = wl1251_acx_station_id(wl);
541 if (ret < 0)
542 goto out;
543 }
544
545 out:
546 mutex_unlock(&wl->mutex);
547 return ret;
548 }
549
550 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
551 struct ieee80211_vif *vif)
552 {
553 struct wl1251 *wl = hw->priv;
554
555 mutex_lock(&wl->mutex);
556 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
557 wl->vif = NULL;
558 mutex_unlock(&wl->mutex);
559 }
560
561 static int wl1251_build_qos_null_data(struct wl1251 *wl)
562 {
563 struct ieee80211_qos_hdr template;
564
565 memset(&template, 0, sizeof(template));
566
567 memcpy(template.addr1, wl->bssid, ETH_ALEN);
568 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
569 memcpy(template.addr3, wl->bssid, ETH_ALEN);
570
571 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
572 IEEE80211_STYPE_QOS_NULLFUNC |
573 IEEE80211_FCTL_TODS);
574
575 template.qos_ctrl = cpu_to_le16(0);
576
577 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
578 sizeof(template));
579 }
580
581 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
582 {
583 struct wl1251 *wl = hw->priv;
584 struct ieee80211_conf *conf = &hw->conf;
585 int channel, ret = 0;
586
587 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
588
589 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
590 channel,
591 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
592 conf->power_level);
593
594 mutex_lock(&wl->mutex);
595
596 ret = wl1251_ps_elp_wakeup(wl);
597 if (ret < 0)
598 goto out;
599
600 if (channel != wl->channel) {
601 wl->channel = channel;
602
603 ret = wl1251_join(wl, wl->bss_type, wl->channel,
604 wl->beacon_int, wl->dtim_period);
605 if (ret < 0)
606 goto out_sleep;
607 }
608
609 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
610 wl1251_debug(DEBUG_PSM, "psm enabled");
611
612 wl->psm_requested = true;
613
614 wl->dtim_period = conf->ps_dtim_period;
615
616 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
617 wl->dtim_period);
618
619 /*
620 * mac80211 enables PSM only if we're already associated.
621 */
622 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
623 if (ret < 0)
624 goto out_sleep;
625 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
626 wl->psm_requested) {
627 wl1251_debug(DEBUG_PSM, "psm disabled");
628
629 wl->psm_requested = false;
630
631 if (wl->psm) {
632 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
633 if (ret < 0)
634 goto out_sleep;
635 }
636 }
637
638 if (conf->power_level != wl->power_level) {
639 ret = wl1251_acx_tx_power(wl, conf->power_level);
640 if (ret < 0)
641 goto out_sleep;
642
643 wl->power_level = conf->power_level;
644 }
645
646 out_sleep:
647 wl1251_ps_elp_sleep(wl);
648
649 out:
650 mutex_unlock(&wl->mutex);
651
652 return ret;
653 }
654
655 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
656 FIF_ALLMULTI | \
657 FIF_FCSFAIL | \
658 FIF_BCN_PRBRESP_PROMISC | \
659 FIF_CONTROL | \
660 FIF_OTHER_BSS)
661
662 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
663 unsigned int changed,
664 unsigned int *total,u64 multicast)
665 {
666 struct wl1251 *wl = hw->priv;
667
668 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
669
670 *total &= WL1251_SUPPORTED_FILTERS;
671 changed &= WL1251_SUPPORTED_FILTERS;
672
673 if (changed == 0)
674 /* no filters which we support changed */
675 return;
676
677
678 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
679 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
680
681 if (*total & FIF_PROMISC_IN_BSS) {
682 wl->rx_config |= CFG_BSSID_FILTER_EN;
683 wl->rx_config |= CFG_RX_ALL_GOOD;
684 }
685 if (*total & FIF_ALLMULTI)
686 /*
687 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
688 * all multicast frames
689 */
690 wl->rx_config &= ~CFG_MC_FILTER_EN;
691 if (*total & FIF_FCSFAIL)
692 wl->rx_filter |= CFG_RX_FCS_ERROR;
693 if (*total & FIF_BCN_PRBRESP_PROMISC) {
694 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
695 wl->rx_config &= ~CFG_SSID_FILTER_EN;
696 }
697 if (*total & FIF_CONTROL)
698 wl->rx_filter |= CFG_RX_CTL_EN;
699 if (*total & FIF_OTHER_BSS)
700 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
701
702 /* schedule_work(&wl->filter_work); */
703 }
704
705 /* HW encryption */
706 static int wl1251_set_key_type(struct wl1251 *wl,
707 struct wl1251_cmd_set_keys *key,
708 enum set_key_cmd cmd,
709 struct ieee80211_key_conf *mac80211_key,
710 const u8 *addr)
711 {
712 switch (mac80211_key->alg) {
713 case ALG_WEP:
714 if (is_broadcast_ether_addr(addr))
715 key->key_type = KEY_WEP_DEFAULT;
716 else
717 key->key_type = KEY_WEP_ADDR;
718
719 mac80211_key->hw_key_idx = mac80211_key->keyidx;
720 break;
721 case ALG_TKIP:
722 if (is_broadcast_ether_addr(addr))
723 key->key_type = KEY_TKIP_MIC_GROUP;
724 else
725 key->key_type = KEY_TKIP_MIC_PAIRWISE;
726
727 mac80211_key->hw_key_idx = mac80211_key->keyidx;
728 break;
729 case ALG_CCMP:
730 if (is_broadcast_ether_addr(addr))
731 key->key_type = KEY_AES_GROUP;
732 else
733 key->key_type = KEY_AES_PAIRWISE;
734 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
735 break;
736 default:
737 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
738 return -EOPNOTSUPP;
739 }
740
741 return 0;
742 }
743
744 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
745 struct ieee80211_vif *vif,
746 struct ieee80211_sta *sta,
747 struct ieee80211_key_conf *key)
748 {
749 struct wl1251 *wl = hw->priv;
750 struct wl1251_cmd_set_keys *wl_cmd;
751 const u8 *addr;
752 int ret;
753
754 static const u8 bcast_addr[ETH_ALEN] =
755 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
756
757 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
758
759 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
760 if (!wl_cmd) {
761 ret = -ENOMEM;
762 goto out;
763 }
764
765 addr = sta ? sta->addr : bcast_addr;
766
767 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
768 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
769 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
770 key->alg, key->keyidx, key->keylen, key->flags);
771 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
772
773 if (is_zero_ether_addr(addr)) {
774 /* We dont support TX only encryption */
775 ret = -EOPNOTSUPP;
776 goto out;
777 }
778
779 mutex_lock(&wl->mutex);
780
781 ret = wl1251_ps_elp_wakeup(wl);
782 if (ret < 0)
783 goto out_unlock;
784
785 switch (cmd) {
786 case SET_KEY:
787 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
788 break;
789 case DISABLE_KEY:
790 wl_cmd->key_action = KEY_REMOVE;
791 break;
792 default:
793 wl1251_error("Unsupported key cmd 0x%x", cmd);
794 break;
795 }
796
797 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
798 if (ret < 0) {
799 wl1251_error("Set KEY type failed");
800 goto out_sleep;
801 }
802
803 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
804 memcpy(wl_cmd->addr, addr, ETH_ALEN);
805
806 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
807 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
808 /*
809 * We get the key in the following form:
810 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
811 * but the target is expecting:
812 * TKIP - RX MIC - TX MIC
813 */
814 memcpy(wl_cmd->key, key->key, 16);
815 memcpy(wl_cmd->key + 16, key->key + 24, 8);
816 memcpy(wl_cmd->key + 24, key->key + 16, 8);
817
818 } else {
819 memcpy(wl_cmd->key, key->key, key->keylen);
820 }
821 wl_cmd->key_size = key->keylen;
822
823 wl_cmd->id = key->keyidx;
824 wl_cmd->ssid_profile = 0;
825
826 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
827
828 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
829 if (ret < 0) {
830 wl1251_warning("could not set keys");
831 goto out_sleep;
832 }
833
834 out_sleep:
835 wl1251_ps_elp_sleep(wl);
836
837 out_unlock:
838 mutex_unlock(&wl->mutex);
839
840 out:
841 kfree(wl_cmd);
842
843 return ret;
844 }
845
846 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
847 struct ieee80211_vif *vif,
848 struct cfg80211_scan_request *req)
849 {
850 struct wl1251 *wl = hw->priv;
851 struct sk_buff *skb;
852 size_t ssid_len = 0;
853 u8 *ssid = NULL;
854 int ret;
855
856 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
857
858 if (req->n_ssids) {
859 ssid = req->ssids[0].ssid;
860 ssid_len = req->ssids[0].ssid_len;
861 }
862
863 mutex_lock(&wl->mutex);
864
865 if (wl->scanning) {
866 wl1251_debug(DEBUG_SCAN, "scan already in progress");
867 ret = -EINVAL;
868 goto out;
869 }
870
871 ret = wl1251_ps_elp_wakeup(wl);
872 if (ret < 0)
873 goto out;
874
875 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
876 req->ie, req->ie_len);
877 if (!skb) {
878 ret = -ENOMEM;
879 goto out;
880 }
881
882 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
883 skb->len);
884 dev_kfree_skb(skb);
885 if (ret < 0)
886 goto out_sleep;
887
888 ret = wl1251_cmd_trigger_scan_to(wl, 0);
889 if (ret < 0)
890 goto out_sleep;
891
892 wl->scanning = true;
893
894 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
895 req->n_channels, WL1251_SCAN_NUM_PROBES);
896 if (ret < 0) {
897 wl->scanning = false;
898 goto out_sleep;
899 }
900
901 out_sleep:
902 wl1251_ps_elp_sleep(wl);
903
904 out:
905 mutex_unlock(&wl->mutex);
906
907 return ret;
908 }
909
910 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
911 {
912 struct wl1251 *wl = hw->priv;
913 int ret;
914
915 mutex_lock(&wl->mutex);
916
917 ret = wl1251_ps_elp_wakeup(wl);
918 if (ret < 0)
919 goto out;
920
921 ret = wl1251_acx_rts_threshold(wl, (u16) value);
922 if (ret < 0)
923 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
924
925 wl1251_ps_elp_sleep(wl);
926
927 out:
928 mutex_unlock(&wl->mutex);
929
930 return ret;
931 }
932
933 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
934 struct ieee80211_vif *vif,
935 struct ieee80211_bss_conf *bss_conf,
936 u32 changed)
937 {
938 struct wl1251 *wl = hw->priv;
939 struct sk_buff *beacon, *skb;
940 int ret;
941
942 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
943
944 mutex_lock(&wl->mutex);
945
946 ret = wl1251_ps_elp_wakeup(wl);
947 if (ret < 0)
948 goto out;
949
950 if (changed & BSS_CHANGED_BSSID) {
951 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
952
953 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
954 if (!skb)
955 goto out_sleep;
956
957 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
958 skb->data, skb->len);
959 dev_kfree_skb(skb);
960 if (ret < 0)
961 goto out_sleep;
962
963 ret = wl1251_build_qos_null_data(wl);
964 if (ret < 0)
965 goto out;
966
967 if (wl->bss_type != BSS_TYPE_IBSS) {
968 ret = wl1251_join(wl, wl->bss_type, wl->channel,
969 wl->beacon_int, wl->dtim_period);
970 if (ret < 0)
971 goto out_sleep;
972 }
973 }
974
975 if (changed & BSS_CHANGED_ASSOC) {
976 if (bss_conf->assoc) {
977 wl->beacon_int = bss_conf->beacon_int;
978
979 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
980 if (!skb)
981 goto out_sleep;
982
983 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
984 skb->data,
985 skb->len);
986 dev_kfree_skb(skb);
987 if (ret < 0)
988 goto out_sleep;
989
990 ret = wl1251_acx_aid(wl, bss_conf->aid);
991 if (ret < 0)
992 goto out_sleep;
993 } else {
994 /* use defaults when not associated */
995 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
996 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
997 }
998 }
999 if (changed & BSS_CHANGED_ERP_SLOT) {
1000 if (bss_conf->use_short_slot)
1001 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1002 else
1003 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1004 if (ret < 0) {
1005 wl1251_warning("Set slot time failed %d", ret);
1006 goto out_sleep;
1007 }
1008 }
1009
1010 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1011 if (bss_conf->use_short_preamble)
1012 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1013 else
1014 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1015 }
1016
1017 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1018 if (bss_conf->use_cts_prot)
1019 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1020 else
1021 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1022 if (ret < 0) {
1023 wl1251_warning("Set ctsprotect failed %d", ret);
1024 goto out_sleep;
1025 }
1026 }
1027
1028 if (changed & BSS_CHANGED_BEACON) {
1029 beacon = ieee80211_beacon_get(hw, vif);
1030 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1031 beacon->len);
1032
1033 if (ret < 0) {
1034 dev_kfree_skb(beacon);
1035 goto out_sleep;
1036 }
1037
1038 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1039 beacon->len);
1040
1041 dev_kfree_skb(beacon);
1042
1043 if (ret < 0)
1044 goto out_sleep;
1045
1046 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1047 wl->channel, wl->dtim_period);
1048
1049 if (ret < 0)
1050 goto out_sleep;
1051 }
1052
1053 out_sleep:
1054 wl1251_ps_elp_sleep(wl);
1055
1056 out:
1057 mutex_unlock(&wl->mutex);
1058 }
1059
1060
1061 /* can't be const, mac80211 writes to this */
1062 static struct ieee80211_rate wl1251_rates[] = {
1063 { .bitrate = 10,
1064 .hw_value = 0x1,
1065 .hw_value_short = 0x1, },
1066 { .bitrate = 20,
1067 .hw_value = 0x2,
1068 .hw_value_short = 0x2,
1069 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1070 { .bitrate = 55,
1071 .hw_value = 0x4,
1072 .hw_value_short = 0x4,
1073 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1074 { .bitrate = 110,
1075 .hw_value = 0x20,
1076 .hw_value_short = 0x20,
1077 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1078 { .bitrate = 60,
1079 .hw_value = 0x8,
1080 .hw_value_short = 0x8, },
1081 { .bitrate = 90,
1082 .hw_value = 0x10,
1083 .hw_value_short = 0x10, },
1084 { .bitrate = 120,
1085 .hw_value = 0x40,
1086 .hw_value_short = 0x40, },
1087 { .bitrate = 180,
1088 .hw_value = 0x80,
1089 .hw_value_short = 0x80, },
1090 { .bitrate = 240,
1091 .hw_value = 0x200,
1092 .hw_value_short = 0x200, },
1093 { .bitrate = 360,
1094 .hw_value = 0x400,
1095 .hw_value_short = 0x400, },
1096 { .bitrate = 480,
1097 .hw_value = 0x800,
1098 .hw_value_short = 0x800, },
1099 { .bitrate = 540,
1100 .hw_value = 0x1000,
1101 .hw_value_short = 0x1000, },
1102 };
1103
1104 /* can't be const, mac80211 writes to this */
1105 static struct ieee80211_channel wl1251_channels[] = {
1106 { .hw_value = 1, .center_freq = 2412},
1107 { .hw_value = 2, .center_freq = 2417},
1108 { .hw_value = 3, .center_freq = 2422},
1109 { .hw_value = 4, .center_freq = 2427},
1110 { .hw_value = 5, .center_freq = 2432},
1111 { .hw_value = 6, .center_freq = 2437},
1112 { .hw_value = 7, .center_freq = 2442},
1113 { .hw_value = 8, .center_freq = 2447},
1114 { .hw_value = 9, .center_freq = 2452},
1115 { .hw_value = 10, .center_freq = 2457},
1116 { .hw_value = 11, .center_freq = 2462},
1117 { .hw_value = 12, .center_freq = 2467},
1118 { .hw_value = 13, .center_freq = 2472},
1119 };
1120
1121 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1122 const struct ieee80211_tx_queue_params *params)
1123 {
1124 enum wl1251_acx_ps_scheme ps_scheme;
1125 struct wl1251 *wl = hw->priv;
1126 int ret;
1127
1128 mutex_lock(&wl->mutex);
1129
1130 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1131
1132 ret = wl1251_ps_elp_wakeup(wl);
1133 if (ret < 0)
1134 goto out;
1135
1136 /* mac80211 uses units of 32 usec */
1137 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1138 params->cw_min, params->cw_max,
1139 params->aifs, params->txop * 32);
1140 if (ret < 0)
1141 goto out_sleep;
1142
1143 if (params->uapsd)
1144 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1145 else
1146 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1147
1148 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1149 CHANNEL_TYPE_EDCF,
1150 wl1251_tx_get_queue(queue), ps_scheme,
1151 WL1251_ACX_ACK_POLICY_LEGACY);
1152 if (ret < 0)
1153 goto out_sleep;
1154
1155 out_sleep:
1156 wl1251_ps_elp_sleep(wl);
1157
1158 out:
1159 mutex_unlock(&wl->mutex);
1160
1161 return ret;
1162 }
1163
1164 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1165 struct survey_info *survey)
1166 {
1167 struct wl1251 *wl = hw->priv;
1168 struct ieee80211_conf *conf = &hw->conf;
1169
1170 if (idx != 0)
1171 return -ENOENT;
1172
1173 survey->channel = conf->channel;
1174 survey->filled = SURVEY_INFO_NOISE_DBM;
1175 survey->noise = wl->noise;
1176
1177 return 0;
1178 }
1179
1180 /* can't be const, mac80211 writes to this */
1181 static struct ieee80211_supported_band wl1251_band_2ghz = {
1182 .channels = wl1251_channels,
1183 .n_channels = ARRAY_SIZE(wl1251_channels),
1184 .bitrates = wl1251_rates,
1185 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1186 };
1187
1188 static const struct ieee80211_ops wl1251_ops = {
1189 .start = wl1251_op_start,
1190 .stop = wl1251_op_stop,
1191 .add_interface = wl1251_op_add_interface,
1192 .remove_interface = wl1251_op_remove_interface,
1193 .config = wl1251_op_config,
1194 .configure_filter = wl1251_op_configure_filter,
1195 .tx = wl1251_op_tx,
1196 .set_key = wl1251_op_set_key,
1197 .hw_scan = wl1251_op_hw_scan,
1198 .bss_info_changed = wl1251_op_bss_info_changed,
1199 .set_rts_threshold = wl1251_op_set_rts_threshold,
1200 .conf_tx = wl1251_op_conf_tx,
1201 .get_survey = wl1251_op_get_survey,
1202 };
1203
1204 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1205 {
1206 unsigned long timeout;
1207
1208 wl1251_reg_write32(wl, EE_ADDR, offset);
1209 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1210
1211 /* EE_CTL_READ clears when data is ready */
1212 timeout = jiffies + msecs_to_jiffies(100);
1213 while (1) {
1214 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1215 break;
1216
1217 if (time_after(jiffies, timeout))
1218 return -ETIMEDOUT;
1219
1220 msleep(1);
1221 }
1222
1223 *data = wl1251_reg_read32(wl, EE_DATA);
1224 return 0;
1225 }
1226
1227 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1228 u8 *data, size_t len)
1229 {
1230 size_t i;
1231 int ret;
1232
1233 wl1251_reg_write32(wl, EE_START, 0);
1234
1235 for (i = 0; i < len; i++) {
1236 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1237 if (ret < 0)
1238 return ret;
1239 }
1240
1241 return 0;
1242 }
1243
1244 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1245 {
1246 u8 mac[ETH_ALEN];
1247 int i, ret;
1248
1249 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1250
1251 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1252 if (ret < 0) {
1253 wl1251_warning("failed to read MAC address from EEPROM");
1254 return ret;
1255 }
1256
1257 /* MAC is stored in reverse order */
1258 for (i = 0; i < ETH_ALEN; i++)
1259 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1260
1261 return 0;
1262 }
1263
1264 static int wl1251_register_hw(struct wl1251 *wl)
1265 {
1266 int ret;
1267
1268 if (wl->mac80211_registered)
1269 return 0;
1270
1271 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1272
1273 ret = ieee80211_register_hw(wl->hw);
1274 if (ret < 0) {
1275 wl1251_error("unable to register mac80211 hw: %d", ret);
1276 return ret;
1277 }
1278
1279 wl->mac80211_registered = true;
1280
1281 wl1251_notice("loaded");
1282
1283 return 0;
1284 }
1285
1286 int wl1251_init_ieee80211(struct wl1251 *wl)
1287 {
1288 int ret;
1289
1290 /* The tx descriptor buffer and the TKIP space */
1291 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1292 + WL1251_TKIP_IV_SPACE;
1293
1294 /* unit us */
1295 wl->hw->channel_change_time = 10000;
1296
1297 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1298 IEEE80211_HW_SUPPORTS_PS |
1299 IEEE80211_HW_BEACON_FILTER |
1300 IEEE80211_HW_SUPPORTS_UAPSD;
1301
1302 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1303 wl->hw->wiphy->max_scan_ssids = 1;
1304 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1305
1306 wl->hw->queues = 4;
1307
1308 if (wl->use_eeprom)
1309 wl1251_read_eeprom_mac(wl);
1310
1311 ret = wl1251_register_hw(wl);
1312 if (ret)
1313 goto out;
1314
1315 wl1251_debugfs_init(wl);
1316 wl1251_notice("initialized");
1317
1318 ret = 0;
1319
1320 out:
1321 return ret;
1322 }
1323 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1324
1325 struct ieee80211_hw *wl1251_alloc_hw(void)
1326 {
1327 struct ieee80211_hw *hw;
1328 struct wl1251 *wl;
1329 int i;
1330 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1331
1332 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1333 if (!hw) {
1334 wl1251_error("could not alloc ieee80211_hw");
1335 return ERR_PTR(-ENOMEM);
1336 }
1337
1338 wl = hw->priv;
1339 memset(wl, 0, sizeof(*wl));
1340
1341 wl->hw = hw;
1342
1343 wl->data_in_count = 0;
1344
1345 skb_queue_head_init(&wl->tx_queue);
1346
1347 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1348 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1349 wl->channel = WL1251_DEFAULT_CHANNEL;
1350 wl->scanning = false;
1351 wl->default_key = 0;
1352 wl->listen_int = 1;
1353 wl->rx_counter = 0;
1354 wl->rx_handled = 0;
1355 wl->rx_current_buffer = 0;
1356 wl->rx_last_id = 0;
1357 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1358 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1359 wl->elp = false;
1360 wl->psm = 0;
1361 wl->psm_requested = false;
1362 wl->tx_queue_stopped = false;
1363 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1364 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1365 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1366 wl->vif = NULL;
1367
1368 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1369 wl->tx_frames[i] = NULL;
1370
1371 wl->next_tx_complete = 0;
1372
1373 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1374 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1375
1376 /*
1377 * In case our MAC address is not correctly set,
1378 * we use a random but Nokia MAC.
1379 */
1380 memcpy(wl->mac_addr, nokia_oui, 3);
1381 get_random_bytes(wl->mac_addr + 3, 3);
1382
1383 wl->state = WL1251_STATE_OFF;
1384 mutex_init(&wl->mutex);
1385
1386 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1387 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1388
1389 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1390 if (!wl->rx_descriptor) {
1391 wl1251_error("could not allocate memory for rx descriptor");
1392 ieee80211_free_hw(hw);
1393 return ERR_PTR(-ENOMEM);
1394 }
1395
1396 return hw;
1397 }
1398 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1399
1400 int wl1251_free_hw(struct wl1251 *wl)
1401 {
1402 ieee80211_unregister_hw(wl->hw);
1403
1404 wl1251_debugfs_exit(wl);
1405
1406 kfree(wl->target_mem_map);
1407 kfree(wl->data_path);
1408 vfree(wl->fw);
1409 wl->fw = NULL;
1410 kfree(wl->nvs);
1411 wl->nvs = NULL;
1412
1413 kfree(wl->rx_descriptor);
1414 wl->rx_descriptor = NULL;
1415
1416 ieee80211_free_hw(wl->hw);
1417
1418 return 0;
1419 }
1420 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1421
1422 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1423 MODULE_LICENSE("GPL");
1424 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1425 MODULE_FIRMWARE(WL1251_FW_NAME);
Tomato firmware and modifications.