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wl1251: remove copyright contact person
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blobedd4845c370754752daed1ab0b9c4a0db491f77a
1 /*
2 * This file is part of wl1251
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22 #include <linux/module.h>
23 #include <linux/interrupt.h>
24 #include <linux/firmware.h>
25 #include <linux/delay.h>
26 #include <linux/irq.h>
27 #include <linux/crc32.h>
28 #include <linux/etherdevice.h>
29 #include <linux/vmalloc.h>
30 #include <linux/slab.h>
31
32 #include "wl1251.h"
33 #include "wl12xx_80211.h"
34 #include "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 = vmalloc(wl->fw_len);
87
88 if (!wl->fw) {
89 wl1251_error("could not allocate memory for the firmware");
90 ret = -ENOMEM;
91 goto out;
92 }
93
94 memcpy(wl->fw, fw->data, wl->fw_len);
95
96 ret = 0;
97
98 out:
99 release_firmware(fw);
100
101 return ret;
102 }
103
104 static int wl1251_fetch_nvs(struct wl1251 *wl)
105 {
106 const struct firmware *fw;
107 struct device *dev = wiphy_dev(wl->hw->wiphy);
108 int ret;
109
110 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
111
112 if (ret < 0) {
113 wl1251_error("could not get nvs file: %d", ret);
114 return ret;
115 }
116
117 if (fw->size % 4) {
118 wl1251_error("nvs size is not multiple of 32 bits: %zu",
119 fw->size);
120 ret = -EILSEQ;
121 goto out;
122 }
123
124 wl->nvs_len = fw->size;
125 wl->nvs = kmemdup(fw->data, wl->nvs_len, GFP_KERNEL);
126
127 if (!wl->nvs) {
128 wl1251_error("could not allocate memory for the nvs file");
129 ret = -ENOMEM;
130 goto out;
131 }
132
133 ret = 0;
134
135 out:
136 release_firmware(fw);
137
138 return ret;
139 }
140
141 static void wl1251_fw_wakeup(struct wl1251 *wl)
142 {
143 u32 elp_reg;
144
145 elp_reg = ELPCTRL_WAKE_UP;
146 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
147 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
148
149 if (!(elp_reg & ELPCTRL_WLAN_READY))
150 wl1251_warning("WLAN not ready");
151 }
152
153 static int wl1251_chip_wakeup(struct wl1251 *wl)
154 {
155 int ret = 0;
156
157 wl1251_power_on(wl);
158 msleep(WL1251_POWER_ON_SLEEP);
159 wl->if_ops->reset(wl);
160
161 /* We don't need a real memory partition here, because we only want
162 * to use the registers at this point. */
163 wl1251_set_partition(wl,
164 0x00000000,
165 0x00000000,
166 REGISTERS_BASE,
167 REGISTERS_DOWN_SIZE);
168
169 /* ELP module wake up */
170 wl1251_fw_wakeup(wl);
171
172 /* whal_FwCtrl_BootSm() */
173
174 /* 0. read chip id from CHIP_ID */
175 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
176
177 /* 1. check if chip id is valid */
178
179 switch (wl->chip_id) {
180 case CHIP_ID_1251_PG12:
181 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
182 wl->chip_id);
183 break;
184 case CHIP_ID_1251_PG11:
185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
186 wl->chip_id);
187 break;
188 case CHIP_ID_1251_PG10:
189 default:
190 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
191 ret = -ENODEV;
192 goto out;
193 }
194
195 if (wl->fw == NULL) {
196 ret = wl1251_fetch_firmware(wl);
197 if (ret < 0)
198 goto out;
199 }
200
201 if (wl->nvs == NULL && !wl->use_eeprom) {
202 /* No NVS from netlink, try to get it from the filesystem */
203 ret = wl1251_fetch_nvs(wl);
204 if (ret < 0)
205 goto out;
206 }
207
208 out:
209 return ret;
210 }
211
212 #define WL1251_IRQ_LOOP_COUNT 10
213 static void wl1251_irq_work(struct work_struct *work)
214 {
215 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
216 struct wl1251 *wl =
217 container_of(work, struct wl1251, irq_work);
218 int ret;
219
220 mutex_lock(&wl->mutex);
221
222 wl1251_debug(DEBUG_IRQ, "IRQ work");
223
224 if (wl->state == WL1251_STATE_OFF)
225 goto out;
226
227 ret = wl1251_ps_elp_wakeup(wl);
228 if (ret < 0)
229 goto out;
230
231 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
232
233 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
234 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
235
236 do {
237 if (wl->data_path) {
238 wl->rx_counter = wl1251_mem_read32(
239 wl, wl->data_path->rx_control_addr);
240
241 /* We handle a frmware bug here */
242 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
243 case 0:
244 wl1251_debug(DEBUG_IRQ,
245 "RX: FW and host in sync");
246 intr &= ~WL1251_ACX_INTR_RX0_DATA;
247 intr &= ~WL1251_ACX_INTR_RX1_DATA;
248 break;
249 case 1:
250 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
251 intr |= WL1251_ACX_INTR_RX0_DATA;
252 intr &= ~WL1251_ACX_INTR_RX1_DATA;
253 break;
254 case 2:
255 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
256 intr |= WL1251_ACX_INTR_RX0_DATA;
257 intr |= WL1251_ACX_INTR_RX1_DATA;
258 break;
259 default:
260 wl1251_warning(
261 "RX: FW and host out of sync: %d",
262 wl->rx_counter - wl->rx_handled);
263 break;
264 }
265
266 wl->rx_handled = wl->rx_counter;
267
268 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
269 wl->rx_counter);
270 }
271
272 intr &= wl->intr_mask;
273
274 if (intr == 0) {
275 wl1251_debug(DEBUG_IRQ, "INTR is 0");
276 goto out_sleep;
277 }
278
279 if (intr & WL1251_ACX_INTR_RX0_DATA) {
280 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
281 wl1251_rx(wl);
282 }
283
284 if (intr & WL1251_ACX_INTR_RX1_DATA) {
285 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
286 wl1251_rx(wl);
287 }
288
289 if (intr & WL1251_ACX_INTR_TX_RESULT) {
290 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
291 wl1251_tx_complete(wl);
292 }
293
294 if (intr & WL1251_ACX_INTR_EVENT_A) {
295 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
296 wl1251_event_handle(wl, 0);
297 }
298
299 if (intr & WL1251_ACX_INTR_EVENT_B) {
300 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
301 wl1251_event_handle(wl, 1);
302 }
303
304 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
305 wl1251_debug(DEBUG_IRQ,
306 "WL1251_ACX_INTR_INIT_COMPLETE");
307
308 if (--ctr == 0)
309 break;
310
311 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
312 } while (intr);
313
314 out_sleep:
315 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
316 wl1251_ps_elp_sleep(wl);
317
318 out:
319 mutex_unlock(&wl->mutex);
320 }
321
322 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
323 u16 beacon_interval, u8 dtim_period)
324 {
325 int ret;
326
327 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
328 DEFAULT_HW_GEN_MODULATION_TYPE,
329 wl->tx_mgmt_frm_rate,
330 wl->tx_mgmt_frm_mod);
331 if (ret < 0)
332 goto out;
333
334
335 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
336 dtim_period);
337 if (ret < 0)
338 goto out;
339
340 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
341 if (ret < 0)
342 wl1251_warning("join timeout");
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 /*
397 * FIXME: this is racy, the variable is not properly
398 * protected. Maybe fix this by removing the stupid
399 * variable altogether and checking the real queue state?
400 */
401 wl->tx_queue_stopped = true;
402 }
403
404 return NETDEV_TX_OK;
405 }
406
407 static int wl1251_op_start(struct ieee80211_hw *hw)
408 {
409 struct wl1251 *wl = hw->priv;
410 struct wiphy *wiphy = hw->wiphy;
411 int ret = 0;
412
413 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
414
415 mutex_lock(&wl->mutex);
416
417 if (wl->state != WL1251_STATE_OFF) {
418 wl1251_error("cannot start because not in off state: %d",
419 wl->state);
420 ret = -EBUSY;
421 goto out;
422 }
423
424 ret = wl1251_chip_wakeup(wl);
425 if (ret < 0)
426 goto out;
427
428 ret = wl1251_boot(wl);
429 if (ret < 0)
430 goto out;
431
432 ret = wl1251_hw_init(wl);
433 if (ret < 0)
434 goto out;
435
436 ret = wl1251_acx_station_id(wl);
437 if (ret < 0)
438 goto out;
439
440 wl->state = WL1251_STATE_ON;
441
442 wl1251_info("firmware booted (%s)", wl->fw_ver);
443
444 /* update hw/fw version info in wiphy struct */
445 wiphy->hw_version = wl->chip_id;
446 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
447
448 out:
449 if (ret < 0)
450 wl1251_power_off(wl);
451
452 mutex_unlock(&wl->mutex);
453
454 return ret;
455 }
456
457 static void wl1251_op_stop(struct ieee80211_hw *hw)
458 {
459 struct wl1251 *wl = hw->priv;
460
461 wl1251_info("down");
462
463 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
464
465 mutex_lock(&wl->mutex);
466
467 WARN_ON(wl->state != WL1251_STATE_ON);
468
469 if (wl->scanning) {
470 mutex_unlock(&wl->mutex);
471 ieee80211_scan_completed(wl->hw, true);
472 mutex_lock(&wl->mutex);
473 wl->scanning = false;
474 }
475
476 wl->state = WL1251_STATE_OFF;
477
478 wl1251_disable_interrupts(wl);
479
480 mutex_unlock(&wl->mutex);
481
482 cancel_work_sync(&wl->irq_work);
483 cancel_work_sync(&wl->tx_work);
484 cancel_work_sync(&wl->filter_work);
485
486 mutex_lock(&wl->mutex);
487
488 /* let's notify MAC80211 about the remaining pending TX frames */
489 wl1251_tx_flush(wl);
490 wl1251_power_off(wl);
491
492 memset(wl->bssid, 0, ETH_ALEN);
493 wl->listen_int = 1;
494 wl->bss_type = MAX_BSS_TYPE;
495
496 wl->data_in_count = 0;
497 wl->rx_counter = 0;
498 wl->rx_handled = 0;
499 wl->rx_current_buffer = 0;
500 wl->rx_last_id = 0;
501 wl->next_tx_complete = 0;
502 wl->elp = false;
503 wl->psm = 0;
504 wl->tx_queue_stopped = false;
505 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
506 wl->channel = WL1251_DEFAULT_CHANNEL;
507
508 wl1251_debugfs_reset(wl);
509
510 mutex_unlock(&wl->mutex);
511 }
512
513 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
514 struct ieee80211_vif *vif)
515 {
516 struct wl1251 *wl = hw->priv;
517 int ret = 0;
518
519 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
520 vif->type, vif->addr);
521
522 mutex_lock(&wl->mutex);
523 if (wl->vif) {
524 ret = -EBUSY;
525 goto out;
526 }
527
528 wl->vif = vif;
529
530 switch (vif->type) {
531 case NL80211_IFTYPE_STATION:
532 wl->bss_type = BSS_TYPE_STA_BSS;
533 break;
534 case NL80211_IFTYPE_ADHOC:
535 wl->bss_type = BSS_TYPE_IBSS;
536 break;
537 default:
538 ret = -EOPNOTSUPP;
539 goto out;
540 }
541
542 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
543 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
544 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
545 ret = wl1251_acx_station_id(wl);
546 if (ret < 0)
547 goto out;
548 }
549
550 out:
551 mutex_unlock(&wl->mutex);
552 return ret;
553 }
554
555 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
556 struct ieee80211_vif *vif)
557 {
558 struct wl1251 *wl = hw->priv;
559
560 mutex_lock(&wl->mutex);
561 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
562 wl->vif = NULL;
563 mutex_unlock(&wl->mutex);
564 }
565
566 static int wl1251_build_qos_null_data(struct wl1251 *wl)
567 {
568 struct ieee80211_qos_hdr template;
569
570 memset(&template, 0, sizeof(template));
571
572 memcpy(template.addr1, wl->bssid, ETH_ALEN);
573 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
574 memcpy(template.addr3, wl->bssid, ETH_ALEN);
575
576 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
577 IEEE80211_STYPE_QOS_NULLFUNC |
578 IEEE80211_FCTL_TODS);
579
580 /* FIXME: not sure what priority to use here */
581 template.qos_ctrl = cpu_to_le16(0);
582
583 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
584 sizeof(template));
585 }
586
587 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
588 {
589 struct wl1251 *wl = hw->priv;
590 struct ieee80211_conf *conf = &hw->conf;
591 int channel, ret = 0;
592
593 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
594
595 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
596 channel,
597 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
598 conf->power_level);
599
600 mutex_lock(&wl->mutex);
601
602 ret = wl1251_ps_elp_wakeup(wl);
603 if (ret < 0)
604 goto out;
605
606 if (channel != wl->channel) {
607 wl->channel = channel;
608
609 ret = wl1251_join(wl, wl->bss_type, wl->channel,
610 wl->beacon_int, wl->dtim_period);
611 if (ret < 0)
612 goto out_sleep;
613 }
614
615 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
616 wl1251_debug(DEBUG_PSM, "psm enabled");
617
618 wl->psm_requested = true;
619
620 wl->dtim_period = conf->ps_dtim_period;
621
622 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
623 wl->dtim_period);
624
625 /*
626 * mac80211 enables PSM only if we're already associated.
627 */
628 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
629 if (ret < 0)
630 goto out_sleep;
631 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
632 wl->psm_requested) {
633 wl1251_debug(DEBUG_PSM, "psm disabled");
634
635 wl->psm_requested = false;
636
637 if (wl->psm) {
638 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
639 if (ret < 0)
640 goto out_sleep;
641 }
642 }
643
644 if (conf->power_level != wl->power_level) {
645 ret = wl1251_acx_tx_power(wl, conf->power_level);
646 if (ret < 0)
647 goto out_sleep;
648
649 wl->power_level = conf->power_level;
650 }
651
652 out_sleep:
653 wl1251_ps_elp_sleep(wl);
654
655 out:
656 mutex_unlock(&wl->mutex);
657
658 return ret;
659 }
660
661 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
662 FIF_ALLMULTI | \
663 FIF_FCSFAIL | \
664 FIF_BCN_PRBRESP_PROMISC | \
665 FIF_CONTROL | \
666 FIF_OTHER_BSS)
667
668 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
669 unsigned int changed,
670 unsigned int *total,u64 multicast)
671 {
672 struct wl1251 *wl = hw->priv;
673
674 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
675
676 *total &= WL1251_SUPPORTED_FILTERS;
677 changed &= WL1251_SUPPORTED_FILTERS;
678
679 if (changed == 0)
680 /* no filters which we support changed */
681 return;
682
683 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
684
685 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
686 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
687
688 if (*total & FIF_PROMISC_IN_BSS) {
689 wl->rx_config |= CFG_BSSID_FILTER_EN;
690 wl->rx_config |= CFG_RX_ALL_GOOD;
691 }
692 if (*total & FIF_ALLMULTI)
693 /*
694 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
695 * all multicast frames
696 */
697 wl->rx_config &= ~CFG_MC_FILTER_EN;
698 if (*total & FIF_FCSFAIL)
699 wl->rx_filter |= CFG_RX_FCS_ERROR;
700 if (*total & FIF_BCN_PRBRESP_PROMISC) {
701 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
702 wl->rx_config &= ~CFG_SSID_FILTER_EN;
703 }
704 if (*total & FIF_CONTROL)
705 wl->rx_filter |= CFG_RX_CTL_EN;
706 if (*total & FIF_OTHER_BSS)
707 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
708
709 /*
710 * FIXME: workqueues need to be properly cancelled on stop(), for
711 * now let's just disable changing the filter settings. They will
712 * be updated any on config().
713 */
714 /* schedule_work(&wl->filter_work); */
715 }
716
717 /* HW encryption */
718 static int wl1251_set_key_type(struct wl1251 *wl,
719 struct wl1251_cmd_set_keys *key,
720 enum set_key_cmd cmd,
721 struct ieee80211_key_conf *mac80211_key,
722 const u8 *addr)
723 {
724 switch (mac80211_key->cipher) {
725 case WLAN_CIPHER_SUITE_WEP40:
726 case WLAN_CIPHER_SUITE_WEP104:
727 if (is_broadcast_ether_addr(addr))
728 key->key_type = KEY_WEP_DEFAULT;
729 else
730 key->key_type = KEY_WEP_ADDR;
731
732 mac80211_key->hw_key_idx = mac80211_key->keyidx;
733 break;
734 case WLAN_CIPHER_SUITE_TKIP:
735 if (is_broadcast_ether_addr(addr))
736 key->key_type = KEY_TKIP_MIC_GROUP;
737 else
738 key->key_type = KEY_TKIP_MIC_PAIRWISE;
739
740 mac80211_key->hw_key_idx = mac80211_key->keyidx;
741 break;
742 case WLAN_CIPHER_SUITE_CCMP:
743 if (is_broadcast_ether_addr(addr))
744 key->key_type = KEY_AES_GROUP;
745 else
746 key->key_type = KEY_AES_PAIRWISE;
747 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
748 break;
749 default:
750 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
751 return -EOPNOTSUPP;
752 }
753
754 return 0;
755 }
756
757 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
758 struct ieee80211_vif *vif,
759 struct ieee80211_sta *sta,
760 struct ieee80211_key_conf *key)
761 {
762 struct wl1251 *wl = hw->priv;
763 struct wl1251_cmd_set_keys *wl_cmd;
764 const u8 *addr;
765 int ret;
766
767 static const u8 bcast_addr[ETH_ALEN] =
768 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
769
770 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
771
772 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
773 if (!wl_cmd) {
774 ret = -ENOMEM;
775 goto out;
776 }
777
778 addr = sta ? sta->addr : bcast_addr;
779
780 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
781 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
782 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
783 key->cipher, key->keyidx, key->keylen, key->flags);
784 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
785
786 if (is_zero_ether_addr(addr)) {
787 /* We dont support TX only encryption */
788 ret = -EOPNOTSUPP;
789 goto out;
790 }
791
792 mutex_lock(&wl->mutex);
793
794 ret = wl1251_ps_elp_wakeup(wl);
795 if (ret < 0)
796 goto out_unlock;
797
798 switch (cmd) {
799 case SET_KEY:
800 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
801 break;
802 case DISABLE_KEY:
803 wl_cmd->key_action = KEY_REMOVE;
804 break;
805 default:
806 wl1251_error("Unsupported key cmd 0x%x", cmd);
807 break;
808 }
809
810 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
811 if (ret < 0) {
812 wl1251_error("Set KEY type failed");
813 goto out_sleep;
814 }
815
816 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
817 memcpy(wl_cmd->addr, addr, ETH_ALEN);
818
819 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
820 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
821 /*
822 * We get the key in the following form:
823 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
824 * but the target is expecting:
825 * TKIP - RX MIC - TX MIC
826 */
827 memcpy(wl_cmd->key, key->key, 16);
828 memcpy(wl_cmd->key + 16, key->key + 24, 8);
829 memcpy(wl_cmd->key + 24, key->key + 16, 8);
830
831 } else {
832 memcpy(wl_cmd->key, key->key, key->keylen);
833 }
834 wl_cmd->key_size = key->keylen;
835
836 wl_cmd->id = key->keyidx;
837 wl_cmd->ssid_profile = 0;
838
839 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
840
841 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
842 if (ret < 0) {
843 wl1251_warning("could not set keys");
844 goto out_sleep;
845 }
846
847 out_sleep:
848 wl1251_ps_elp_sleep(wl);
849
850 out_unlock:
851 mutex_unlock(&wl->mutex);
852
853 out:
854 kfree(wl_cmd);
855
856 return ret;
857 }
858
859 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
860 struct ieee80211_vif *vif,
861 struct cfg80211_scan_request *req)
862 {
863 struct wl1251 *wl = hw->priv;
864 struct sk_buff *skb;
865 size_t ssid_len = 0;
866 u8 *ssid = NULL;
867 int ret;
868
869 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
870
871 if (req->n_ssids) {
872 ssid = req->ssids[0].ssid;
873 ssid_len = req->ssids[0].ssid_len;
874 }
875
876 mutex_lock(&wl->mutex);
877
878 if (wl->scanning) {
879 wl1251_debug(DEBUG_SCAN, "scan already in progress");
880 ret = -EINVAL;
881 goto out;
882 }
883
884 ret = wl1251_ps_elp_wakeup(wl);
885 if (ret < 0)
886 goto out;
887
888 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
889 req->ie, req->ie_len);
890 if (!skb) {
891 ret = -ENOMEM;
892 goto out;
893 }
894
895 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
896 skb->len);
897 dev_kfree_skb(skb);
898 if (ret < 0)
899 goto out_sleep;
900
901 ret = wl1251_cmd_trigger_scan_to(wl, 0);
902 if (ret < 0)
903 goto out_sleep;
904
905 wl->scanning = true;
906
907 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
908 req->n_channels, WL1251_SCAN_NUM_PROBES);
909 if (ret < 0) {
910 wl->scanning = false;
911 goto out_sleep;
912 }
913
914 out_sleep:
915 wl1251_ps_elp_sleep(wl);
916
917 out:
918 mutex_unlock(&wl->mutex);
919
920 return ret;
921 }
922
923 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
924 {
925 struct wl1251 *wl = hw->priv;
926 int ret;
927
928 mutex_lock(&wl->mutex);
929
930 ret = wl1251_ps_elp_wakeup(wl);
931 if (ret < 0)
932 goto out;
933
934 ret = wl1251_acx_rts_threshold(wl, (u16) value);
935 if (ret < 0)
936 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
937
938 wl1251_ps_elp_sleep(wl);
939
940 out:
941 mutex_unlock(&wl->mutex);
942
943 return ret;
944 }
945
946 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
947 struct ieee80211_vif *vif,
948 struct ieee80211_bss_conf *bss_conf,
949 u32 changed)
950 {
951 struct wl1251 *wl = hw->priv;
952 struct sk_buff *beacon, *skb;
953 int ret;
954
955 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
956
957 mutex_lock(&wl->mutex);
958
959 ret = wl1251_ps_elp_wakeup(wl);
960 if (ret < 0)
961 goto out;
962
963 if (changed & BSS_CHANGED_BSSID) {
964 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
965
966 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
967 if (!skb)
968 goto out_sleep;
969
970 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
971 skb->data, skb->len);
972 dev_kfree_skb(skb);
973 if (ret < 0)
974 goto out_sleep;
975
976 ret = wl1251_build_qos_null_data(wl);
977 if (ret < 0)
978 goto out;
979
980 if (wl->bss_type != BSS_TYPE_IBSS) {
981 ret = wl1251_join(wl, wl->bss_type, wl->channel,
982 wl->beacon_int, wl->dtim_period);
983 if (ret < 0)
984 goto out_sleep;
985 }
986 }
987
988 if (changed & BSS_CHANGED_ASSOC) {
989 if (bss_conf->assoc) {
990 wl->beacon_int = bss_conf->beacon_int;
991
992 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
993 if (!skb)
994 goto out_sleep;
995
996 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
997 skb->data,
998 skb->len);
999 dev_kfree_skb(skb);
1000 if (ret < 0)
1001 goto out_sleep;
1002
1003 ret = wl1251_acx_aid(wl, bss_conf->aid);
1004 if (ret < 0)
1005 goto out_sleep;
1006 } else {
1007 /* use defaults when not associated */
1008 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1009 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1010 }
1011 }
1012 if (changed & BSS_CHANGED_ERP_SLOT) {
1013 if (bss_conf->use_short_slot)
1014 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1015 else
1016 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1017 if (ret < 0) {
1018 wl1251_warning("Set slot time failed %d", ret);
1019 goto out_sleep;
1020 }
1021 }
1022
1023 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1024 if (bss_conf->use_short_preamble)
1025 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1026 else
1027 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1028 }
1029
1030 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1031 if (bss_conf->use_cts_prot)
1032 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1033 else
1034 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1035 if (ret < 0) {
1036 wl1251_warning("Set ctsprotect failed %d", ret);
1037 goto out_sleep;
1038 }
1039 }
1040
1041 if (changed & BSS_CHANGED_BEACON) {
1042 beacon = ieee80211_beacon_get(hw, vif);
1043 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1044 beacon->len);
1045
1046 if (ret < 0) {
1047 dev_kfree_skb(beacon);
1048 goto out_sleep;
1049 }
1050
1051 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1052 beacon->len);
1053
1054 dev_kfree_skb(beacon);
1055
1056 if (ret < 0)
1057 goto out_sleep;
1058
1059 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1060 wl->channel, wl->dtim_period);
1061
1062 if (ret < 0)
1063 goto out_sleep;
1064 }
1065
1066 out_sleep:
1067 wl1251_ps_elp_sleep(wl);
1068
1069 out:
1070 mutex_unlock(&wl->mutex);
1071 }
1072
1073
1074 /* can't be const, mac80211 writes to this */
1075 static struct ieee80211_rate wl1251_rates[] = {
1076 { .bitrate = 10,
1077 .hw_value = 0x1,
1078 .hw_value_short = 0x1, },
1079 { .bitrate = 20,
1080 .hw_value = 0x2,
1081 .hw_value_short = 0x2,
1082 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1083 { .bitrate = 55,
1084 .hw_value = 0x4,
1085 .hw_value_short = 0x4,
1086 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1087 { .bitrate = 110,
1088 .hw_value = 0x20,
1089 .hw_value_short = 0x20,
1090 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1091 { .bitrate = 60,
1092 .hw_value = 0x8,
1093 .hw_value_short = 0x8, },
1094 { .bitrate = 90,
1095 .hw_value = 0x10,
1096 .hw_value_short = 0x10, },
1097 { .bitrate = 120,
1098 .hw_value = 0x40,
1099 .hw_value_short = 0x40, },
1100 { .bitrate = 180,
1101 .hw_value = 0x80,
1102 .hw_value_short = 0x80, },
1103 { .bitrate = 240,
1104 .hw_value = 0x200,
1105 .hw_value_short = 0x200, },
1106 { .bitrate = 360,
1107 .hw_value = 0x400,
1108 .hw_value_short = 0x400, },
1109 { .bitrate = 480,
1110 .hw_value = 0x800,
1111 .hw_value_short = 0x800, },
1112 { .bitrate = 540,
1113 .hw_value = 0x1000,
1114 .hw_value_short = 0x1000, },
1115 };
1116
1117 /* can't be const, mac80211 writes to this */
1118 static struct ieee80211_channel wl1251_channels[] = {
1119 { .hw_value = 1, .center_freq = 2412},
1120 { .hw_value = 2, .center_freq = 2417},
1121 { .hw_value = 3, .center_freq = 2422},
1122 { .hw_value = 4, .center_freq = 2427},
1123 { .hw_value = 5, .center_freq = 2432},
1124 { .hw_value = 6, .center_freq = 2437},
1125 { .hw_value = 7, .center_freq = 2442},
1126 { .hw_value = 8, .center_freq = 2447},
1127 { .hw_value = 9, .center_freq = 2452},
1128 { .hw_value = 10, .center_freq = 2457},
1129 { .hw_value = 11, .center_freq = 2462},
1130 { .hw_value = 12, .center_freq = 2467},
1131 { .hw_value = 13, .center_freq = 2472},
1132 };
1133
1134 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1135 const struct ieee80211_tx_queue_params *params)
1136 {
1137 enum wl1251_acx_ps_scheme ps_scheme;
1138 struct wl1251 *wl = hw->priv;
1139 int ret;
1140
1141 mutex_lock(&wl->mutex);
1142
1143 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1144
1145 ret = wl1251_ps_elp_wakeup(wl);
1146 if (ret < 0)
1147 goto out;
1148
1149 /* mac80211 uses units of 32 usec */
1150 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1151 params->cw_min, params->cw_max,
1152 params->aifs, params->txop * 32);
1153 if (ret < 0)
1154 goto out_sleep;
1155
1156 if (params->uapsd)
1157 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1158 else
1159 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1160
1161 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1162 CHANNEL_TYPE_EDCF,
1163 wl1251_tx_get_queue(queue), ps_scheme,
1164 WL1251_ACX_ACK_POLICY_LEGACY);
1165 if (ret < 0)
1166 goto out_sleep;
1167
1168 out_sleep:
1169 wl1251_ps_elp_sleep(wl);
1170
1171 out:
1172 mutex_unlock(&wl->mutex);
1173
1174 return ret;
1175 }
1176
1177 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1178 struct survey_info *survey)
1179 {
1180 struct wl1251 *wl = hw->priv;
1181 struct ieee80211_conf *conf = &hw->conf;
1182
1183 if (idx != 0)
1184 return -ENOENT;
1185
1186 survey->channel = conf->channel;
1187 survey->filled = SURVEY_INFO_NOISE_DBM;
1188 survey->noise = wl->noise;
1189
1190 return 0;
1191 }
1192
1193 /* can't be const, mac80211 writes to this */
1194 static struct ieee80211_supported_band wl1251_band_2ghz = {
1195 .channels = wl1251_channels,
1196 .n_channels = ARRAY_SIZE(wl1251_channels),
1197 .bitrates = wl1251_rates,
1198 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1199 };
1200
1201 static const struct ieee80211_ops wl1251_ops = {
1202 .start = wl1251_op_start,
1203 .stop = wl1251_op_stop,
1204 .add_interface = wl1251_op_add_interface,
1205 .remove_interface = wl1251_op_remove_interface,
1206 .config = wl1251_op_config,
1207 .configure_filter = wl1251_op_configure_filter,
1208 .tx = wl1251_op_tx,
1209 .set_key = wl1251_op_set_key,
1210 .hw_scan = wl1251_op_hw_scan,
1211 .bss_info_changed = wl1251_op_bss_info_changed,
1212 .set_rts_threshold = wl1251_op_set_rts_threshold,
1213 .conf_tx = wl1251_op_conf_tx,
1214 .get_survey = wl1251_op_get_survey,
1215 };
1216
1217 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1218 {
1219 unsigned long timeout;
1220
1221 wl1251_reg_write32(wl, EE_ADDR, offset);
1222 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1223
1224 /* EE_CTL_READ clears when data is ready */
1225 timeout = jiffies + msecs_to_jiffies(100);
1226 while (1) {
1227 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1228 break;
1229
1230 if (time_after(jiffies, timeout))
1231 return -ETIMEDOUT;
1232
1233 msleep(1);
1234 }
1235
1236 *data = wl1251_reg_read32(wl, EE_DATA);
1237 return 0;
1238 }
1239
1240 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1241 u8 *data, size_t len)
1242 {
1243 size_t i;
1244 int ret;
1245
1246 wl1251_reg_write32(wl, EE_START, 0);
1247
1248 for (i = 0; i < len; i++) {
1249 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1250 if (ret < 0)
1251 return ret;
1252 }
1253
1254 return 0;
1255 }
1256
1257 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1258 {
1259 u8 mac[ETH_ALEN];
1260 int i, ret;
1261
1262 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1263
1264 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1265 if (ret < 0) {
1266 wl1251_warning("failed to read MAC address from EEPROM");
1267 return ret;
1268 }
1269
1270 /* MAC is stored in reverse order */
1271 for (i = 0; i < ETH_ALEN; i++)
1272 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1273
1274 return 0;
1275 }
1276
1277 static int wl1251_register_hw(struct wl1251 *wl)
1278 {
1279 int ret;
1280
1281 if (wl->mac80211_registered)
1282 return 0;
1283
1284 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1285
1286 ret = ieee80211_register_hw(wl->hw);
1287 if (ret < 0) {
1288 wl1251_error("unable to register mac80211 hw: %d", ret);
1289 return ret;
1290 }
1291
1292 wl->mac80211_registered = true;
1293
1294 wl1251_notice("loaded");
1295
1296 return 0;
1297 }
1298
1299 int wl1251_init_ieee80211(struct wl1251 *wl)
1300 {
1301 int ret;
1302
1303 /* The tx descriptor buffer and the TKIP space */
1304 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1305 + WL1251_TKIP_IV_SPACE;
1306
1307 /* unit us */
1308 /* FIXME: find a proper value */
1309 wl->hw->channel_change_time = 10000;
1310
1311 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1312 IEEE80211_HW_SUPPORTS_PS |
1313 IEEE80211_HW_BEACON_FILTER |
1314 IEEE80211_HW_SUPPORTS_UAPSD;
1315
1316 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1317 wl->hw->wiphy->max_scan_ssids = 1;
1318 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1319
1320 wl->hw->queues = 4;
1321
1322 if (wl->use_eeprom)
1323 wl1251_read_eeprom_mac(wl);
1324
1325 ret = wl1251_register_hw(wl);
1326 if (ret)
1327 goto out;
1328
1329 wl1251_debugfs_init(wl);
1330 wl1251_notice("initialized");
1331
1332 ret = 0;
1333
1334 out:
1335 return ret;
1336 }
1337 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1338
1339 struct ieee80211_hw *wl1251_alloc_hw(void)
1340 {
1341 struct ieee80211_hw *hw;
1342 struct wl1251 *wl;
1343 int i;
1344 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1345
1346 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1347 if (!hw) {
1348 wl1251_error("could not alloc ieee80211_hw");
1349 return ERR_PTR(-ENOMEM);
1350 }
1351
1352 wl = hw->priv;
1353 memset(wl, 0, sizeof(*wl));
1354
1355 wl->hw = hw;
1356
1357 wl->data_in_count = 0;
1358
1359 skb_queue_head_init(&wl->tx_queue);
1360
1361 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1362 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1363 wl->channel = WL1251_DEFAULT_CHANNEL;
1364 wl->scanning = false;
1365 wl->default_key = 0;
1366 wl->listen_int = 1;
1367 wl->rx_counter = 0;
1368 wl->rx_handled = 0;
1369 wl->rx_current_buffer = 0;
1370 wl->rx_last_id = 0;
1371 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1372 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1373 wl->elp = false;
1374 wl->psm = 0;
1375 wl->psm_requested = false;
1376 wl->tx_queue_stopped = false;
1377 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1378 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1379 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1380 wl->vif = NULL;
1381
1382 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1383 wl->tx_frames[i] = NULL;
1384
1385 wl->next_tx_complete = 0;
1386
1387 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1388 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1389
1390 /*
1391 * In case our MAC address is not correctly set,
1392 * we use a random but Nokia MAC.
1393 */
1394 memcpy(wl->mac_addr, nokia_oui, 3);
1395 get_random_bytes(wl->mac_addr + 3, 3);
1396
1397 wl->state = WL1251_STATE_OFF;
1398 mutex_init(&wl->mutex);
1399
1400 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1401 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1402
1403 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1404 if (!wl->rx_descriptor) {
1405 wl1251_error("could not allocate memory for rx descriptor");
1406 ieee80211_free_hw(hw);
1407 return ERR_PTR(-ENOMEM);
1408 }
1409
1410 return hw;
1411 }
1412 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1413
1414 int wl1251_free_hw(struct wl1251 *wl)
1415 {
1416 ieee80211_unregister_hw(wl->hw);
1417
1418 wl1251_debugfs_exit(wl);
1419
1420 kfree(wl->target_mem_map);
1421 kfree(wl->data_path);
1422 vfree(wl->fw);
1423 wl->fw = NULL;
1424 kfree(wl->nvs);
1425 wl->nvs = NULL;
1426
1427 kfree(wl->rx_descriptor);
1428 wl->rx_descriptor = NULL;
1429
1430 ieee80211_free_hw(wl->hw);
1431
1432 return 0;
1433 }
1434 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1435
1436 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1437 MODULE_LICENSE("GPL");
1438 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1439 MODULE_FIRMWARE(WL1251_FW_NAME);
(deprecated) Btrfs devel tree