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 "reg.h"
35 #include "io.h"
36 #include "cmd.h"
37 #include "event.h"
38 #include "tx.h"
39 #include "rx.h"
40 #include "ps.h"
41 #include "init.h"
42 #include "debugfs.h"
43 #include "boot.h"
44
wl1251_enable_interrupts(struct wl1251 * wl)45 void wl1251_enable_interrupts(struct wl1251 *wl)
46 {
47 wl->if_ops->enable_irq(wl);
48 }
49
wl1251_disable_interrupts(struct wl1251 * wl)50 void wl1251_disable_interrupts(struct wl1251 *wl)
51 {
52 wl->if_ops->disable_irq(wl);
53 }
54
wl1251_power_off(struct wl1251 * wl)55 static int wl1251_power_off(struct wl1251 *wl)
56 {
57 return wl->if_ops->power(wl, false);
58 }
59
wl1251_power_on(struct wl1251 * wl)60 static int wl1251_power_on(struct wl1251 *wl)
61 {
62 return wl->if_ops->power(wl, true);
63 }
64
wl1251_fetch_firmware(struct wl1251 * wl)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
wl1251_fetch_nvs(struct wl1251 * wl)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
wl1251_fw_wakeup(struct wl1251 * wl)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
wl1251_chip_wakeup(struct wl1251 * wl)153 static int wl1251_chip_wakeup(struct wl1251 *wl)
154 {
155 int ret;
156
157 ret = wl1251_power_on(wl);
158 if (ret < 0)
159 return ret;
160
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 if (wl->nvs == NULL && !wl->use_eeprom) {
205 /* No NVS from netlink, try to get it from the filesystem */
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
wl1251_irq_work(struct work_struct * work)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_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
299 wl1251_event_handle(wl, 0);
300 }
301
302 if (intr & WL1251_ACX_INTR_EVENT_B) {
303 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
304 wl1251_event_handle(wl, 1);
305 }
306
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
310
311 if (--ctr == 0)
312 break;
313
314 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
315 } while (intr);
316
317 out_sleep:
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
320
321 out:
322 mutex_unlock(&wl->mutex);
323 }
324
wl1251_join(struct wl1251 * wl,u8 bss_type,u8 channel,u16 beacon_interval,u8 dtim_period)325 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
326 u16 beacon_interval, u8 dtim_period)
327 {
328 int ret;
329
330 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
331 DEFAULT_HW_GEN_MODULATION_TYPE,
332 wl->tx_mgmt_frm_rate,
333 wl->tx_mgmt_frm_mod);
334 if (ret < 0)
335 goto out;
336
337
338 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
339 dtim_period);
340 if (ret < 0)
341 goto out;
342
343 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
344 if (ret < 0)
345 wl1251_warning("join timeout");
346
347 out:
348 return ret;
349 }
350
wl1251_filter_work(struct work_struct * work)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
wl1251_op_tx(struct ieee80211_hw * hw,struct sk_buff * skb)378 static void wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
379 {
380 struct wl1251 *wl = hw->priv;
381 unsigned long flags;
382
383 skb_queue_tail(&wl->tx_queue, skb);
384
385 /*
386 * The chip specific setup must run before the first TX packet -
387 * before that, the tx_work will not be initialized!
388 */
389
390 ieee80211_queue_work(wl->hw, &wl->tx_work);
391
392 /*
393 * The workqueue is slow to process the tx_queue and we need stop
394 * the queue here, otherwise the queue will get too long.
395 */
396 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
397 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
398
399 spin_lock_irqsave(&wl->wl_lock, flags);
400 ieee80211_stop_queues(wl->hw);
401 wl->tx_queue_stopped = true;
402 spin_unlock_irqrestore(&wl->wl_lock, flags);
403 }
404 }
405
wl1251_op_start(struct ieee80211_hw * hw)406 static int wl1251_op_start(struct ieee80211_hw *hw)
407 {
408 struct wl1251 *wl = hw->priv;
409 struct wiphy *wiphy = hw->wiphy;
410 int ret = 0;
411
412 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
413
414 mutex_lock(&wl->mutex);
415
416 if (wl->state != WL1251_STATE_OFF) {
417 wl1251_error("cannot start because not in off state: %d",
418 wl->state);
419 ret = -EBUSY;
420 goto out;
421 }
422
423 ret = wl1251_chip_wakeup(wl);
424 if (ret < 0)
425 goto out;
426
427 ret = wl1251_boot(wl);
428 if (ret < 0)
429 goto out;
430
431 ret = wl1251_hw_init(wl);
432 if (ret < 0)
433 goto out;
434
435 ret = wl1251_acx_station_id(wl);
436 if (ret < 0)
437 goto out;
438
439 wl->state = WL1251_STATE_ON;
440
441 wl1251_info("firmware booted (%s)", wl->fw_ver);
442
443 /* update hw/fw version info in wiphy struct */
444 wiphy->hw_version = wl->chip_id;
445 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
446
447 out:
448 if (ret < 0)
449 wl1251_power_off(wl);
450
451 mutex_unlock(&wl->mutex);
452
453 return ret;
454 }
455
wl1251_op_stop(struct ieee80211_hw * hw)456 static void wl1251_op_stop(struct ieee80211_hw *hw)
457 {
458 struct wl1251 *wl = hw->priv;
459
460 wl1251_info("down");
461
462 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
463
464 mutex_lock(&wl->mutex);
465
466 WARN_ON(wl->state != WL1251_STATE_ON);
467
468 if (wl->scanning) {
469 ieee80211_scan_completed(wl->hw, true);
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 cancel_delayed_work_sync(&wl->elp_work);
483
484 mutex_lock(&wl->mutex);
485
486 /* let's notify MAC80211 about the remaining pending TX frames */
487 wl1251_tx_flush(wl);
488 wl1251_power_off(wl);
489
490 memset(wl->bssid, 0, ETH_ALEN);
491 wl->listen_int = 1;
492 wl->bss_type = MAX_BSS_TYPE;
493
494 wl->data_in_count = 0;
495 wl->rx_counter = 0;
496 wl->rx_handled = 0;
497 wl->rx_current_buffer = 0;
498 wl->rx_last_id = 0;
499 wl->next_tx_complete = 0;
500 wl->elp = false;
501 wl->station_mode = STATION_ACTIVE_MODE;
502 wl->tx_queue_stopped = false;
503 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
504 wl->rssi_thold = 0;
505 wl->channel = WL1251_DEFAULT_CHANNEL;
506
507 wl1251_debugfs_reset(wl);
508
509 mutex_unlock(&wl->mutex);
510 }
511
wl1251_op_add_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)512 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
513 struct ieee80211_vif *vif)
514 {
515 struct wl1251 *wl = hw->priv;
516 int ret = 0;
517
518 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
519 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
520
521 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
522 vif->type, vif->addr);
523
524 mutex_lock(&wl->mutex);
525 if (wl->vif) {
526 ret = -EBUSY;
527 goto out;
528 }
529
530 wl->vif = vif;
531
532 switch (vif->type) {
533 case NL80211_IFTYPE_STATION:
534 wl->bss_type = BSS_TYPE_STA_BSS;
535 break;
536 case NL80211_IFTYPE_ADHOC:
537 wl->bss_type = BSS_TYPE_IBSS;
538 break;
539 default:
540 ret = -EOPNOTSUPP;
541 goto out;
542 }
543
544 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
545 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
546 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
547 ret = wl1251_acx_station_id(wl);
548 if (ret < 0)
549 goto out;
550 }
551
552 out:
553 mutex_unlock(&wl->mutex);
554 return ret;
555 }
556
wl1251_op_remove_interface(struct ieee80211_hw * hw,struct ieee80211_vif * vif)557 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
558 struct ieee80211_vif *vif)
559 {
560 struct wl1251 *wl = hw->priv;
561
562 mutex_lock(&wl->mutex);
563 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
564 wl->vif = NULL;
565 mutex_unlock(&wl->mutex);
566 }
567
wl1251_build_qos_null_data(struct wl1251 * wl)568 static int wl1251_build_qos_null_data(struct wl1251 *wl)
569 {
570 struct ieee80211_qos_hdr template;
571
572 memset(&template, 0, sizeof(template));
573
574 memcpy(template.addr1, wl->bssid, ETH_ALEN);
575 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
576 memcpy(template.addr3, wl->bssid, ETH_ALEN);
577
578 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
579 IEEE80211_STYPE_QOS_NULLFUNC |
580 IEEE80211_FCTL_TODS);
581
582 /* FIXME: not sure what priority to use here */
583 template.qos_ctrl = cpu_to_le16(0);
584
585 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
586 sizeof(template));
587 }
588
wl1251_op_config(struct ieee80211_hw * hw,u32 changed)589 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
590 {
591 struct wl1251 *wl = hw->priv;
592 struct ieee80211_conf *conf = &hw->conf;
593 int channel, ret = 0;
594
595 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
596
597 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
598 channel,
599 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
600 conf->power_level);
601
602 mutex_lock(&wl->mutex);
603
604 ret = wl1251_ps_elp_wakeup(wl);
605 if (ret < 0)
606 goto out;
607
608 if (channel != wl->channel) {
609 wl->channel = channel;
610
611 ret = wl1251_join(wl, wl->bss_type, wl->channel,
612 wl->beacon_int, wl->dtim_period);
613 if (ret < 0)
614 goto out_sleep;
615 }
616
617 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
618 wl1251_debug(DEBUG_PSM, "psm enabled");
619
620 wl->psm_requested = true;
621
622 wl->dtim_period = conf->ps_dtim_period;
623
624 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
625 wl->dtim_period);
626
627 /*
628 * mac80211 enables PSM only if we're already associated.
629 */
630 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
631 if (ret < 0)
632 goto out_sleep;
633 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
634 wl->psm_requested) {
635 wl1251_debug(DEBUG_PSM, "psm disabled");
636
637 wl->psm_requested = false;
638
639 if (wl->station_mode != STATION_ACTIVE_MODE) {
640 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
641 if (ret < 0)
642 goto out_sleep;
643 }
644 }
645
646 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
647 if (conf->flags & IEEE80211_CONF_IDLE) {
648 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
649 if (ret < 0)
650 goto out_sleep;
651 } else {
652 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
653 if (ret < 0)
654 goto out_sleep;
655 ret = wl1251_join(wl, wl->bss_type, wl->channel,
656 wl->beacon_int, wl->dtim_period);
657 if (ret < 0)
658 goto out_sleep;
659 }
660 }
661
662 if (conf->power_level != wl->power_level) {
663 ret = wl1251_acx_tx_power(wl, conf->power_level);
664 if (ret < 0)
665 goto out_sleep;
666
667 wl->power_level = conf->power_level;
668 }
669
670 out_sleep:
671 wl1251_ps_elp_sleep(wl);
672
673 out:
674 mutex_unlock(&wl->mutex);
675
676 return ret;
677 }
678
679 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
680 FIF_ALLMULTI | \
681 FIF_FCSFAIL | \
682 FIF_BCN_PRBRESP_PROMISC | \
683 FIF_CONTROL | \
684 FIF_OTHER_BSS)
685
wl1251_op_configure_filter(struct ieee80211_hw * hw,unsigned int changed,unsigned int * total,u64 multicast)686 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
687 unsigned int changed,
688 unsigned int *total,u64 multicast)
689 {
690 struct wl1251 *wl = hw->priv;
691
692 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
693
694 *total &= WL1251_SUPPORTED_FILTERS;
695 changed &= WL1251_SUPPORTED_FILTERS;
696
697 if (changed == 0)
698 /* no filters which we support changed */
699 return;
700
701 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
702
703 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
704 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
705
706 if (*total & FIF_PROMISC_IN_BSS) {
707 wl->rx_config |= CFG_BSSID_FILTER_EN;
708 wl->rx_config |= CFG_RX_ALL_GOOD;
709 }
710 if (*total & FIF_ALLMULTI)
711 /*
712 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
713 * all multicast frames
714 */
715 wl->rx_config &= ~CFG_MC_FILTER_EN;
716 if (*total & FIF_FCSFAIL)
717 wl->rx_filter |= CFG_RX_FCS_ERROR;
718 if (*total & FIF_BCN_PRBRESP_PROMISC) {
719 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
720 wl->rx_config &= ~CFG_SSID_FILTER_EN;
721 }
722 if (*total & FIF_CONTROL)
723 wl->rx_filter |= CFG_RX_CTL_EN;
724 if (*total & FIF_OTHER_BSS)
725 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
726
727 /*
728 * FIXME: workqueues need to be properly cancelled on stop(), for
729 * now let's just disable changing the filter settings. They will
730 * be updated any on config().
731 */
732 /* schedule_work(&wl->filter_work); */
733 }
734
735 /* HW encryption */
wl1251_set_key_type(struct wl1251 * wl,struct wl1251_cmd_set_keys * key,enum set_key_cmd cmd,struct ieee80211_key_conf * mac80211_key,const u8 * addr)736 static int wl1251_set_key_type(struct wl1251 *wl,
737 struct wl1251_cmd_set_keys *key,
738 enum set_key_cmd cmd,
739 struct ieee80211_key_conf *mac80211_key,
740 const u8 *addr)
741 {
742 switch (mac80211_key->cipher) {
743 case WLAN_CIPHER_SUITE_WEP40:
744 case WLAN_CIPHER_SUITE_WEP104:
745 if (is_broadcast_ether_addr(addr))
746 key->key_type = KEY_WEP_DEFAULT;
747 else
748 key->key_type = KEY_WEP_ADDR;
749
750 mac80211_key->hw_key_idx = mac80211_key->keyidx;
751 break;
752 case WLAN_CIPHER_SUITE_TKIP:
753 if (is_broadcast_ether_addr(addr))
754 key->key_type = KEY_TKIP_MIC_GROUP;
755 else
756 key->key_type = KEY_TKIP_MIC_PAIRWISE;
757
758 mac80211_key->hw_key_idx = mac80211_key->keyidx;
759 break;
760 case WLAN_CIPHER_SUITE_CCMP:
761 if (is_broadcast_ether_addr(addr))
762 key->key_type = KEY_AES_GROUP;
763 else
764 key->key_type = KEY_AES_PAIRWISE;
765 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
766 break;
767 default:
768 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
769 return -EOPNOTSUPP;
770 }
771
772 return 0;
773 }
774
wl1251_op_set_key(struct ieee80211_hw * hw,enum set_key_cmd cmd,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_key_conf * key)775 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
776 struct ieee80211_vif *vif,
777 struct ieee80211_sta *sta,
778 struct ieee80211_key_conf *key)
779 {
780 struct wl1251 *wl = hw->priv;
781 struct wl1251_cmd_set_keys *wl_cmd;
782 const u8 *addr;
783 int ret;
784
785 static const u8 bcast_addr[ETH_ALEN] =
786 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
787
788 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
789
790 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
791 if (!wl_cmd) {
792 ret = -ENOMEM;
793 goto out;
794 }
795
796 addr = sta ? sta->addr : bcast_addr;
797
798 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
799 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
800 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
801 key->cipher, key->keyidx, key->keylen, key->flags);
802 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
803
804 if (is_zero_ether_addr(addr)) {
805 /* We dont support TX only encryption */
806 ret = -EOPNOTSUPP;
807 goto out;
808 }
809
810 mutex_lock(&wl->mutex);
811
812 ret = wl1251_ps_elp_wakeup(wl);
813 if (ret < 0)
814 goto out_unlock;
815
816 switch (cmd) {
817 case SET_KEY:
818 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
819 break;
820 case DISABLE_KEY:
821 wl_cmd->key_action = KEY_REMOVE;
822 break;
823 default:
824 wl1251_error("Unsupported key cmd 0x%x", cmd);
825 break;
826 }
827
828 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
829 if (ret < 0) {
830 wl1251_error("Set KEY type failed");
831 goto out_sleep;
832 }
833
834 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
835 memcpy(wl_cmd->addr, addr, ETH_ALEN);
836
837 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
838 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
839 /*
840 * We get the key in the following form:
841 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
842 * but the target is expecting:
843 * TKIP - RX MIC - TX MIC
844 */
845 memcpy(wl_cmd->key, key->key, 16);
846 memcpy(wl_cmd->key + 16, key->key + 24, 8);
847 memcpy(wl_cmd->key + 24, key->key + 16, 8);
848
849 } else {
850 memcpy(wl_cmd->key, key->key, key->keylen);
851 }
852 wl_cmd->key_size = key->keylen;
853
854 wl_cmd->id = key->keyidx;
855 wl_cmd->ssid_profile = 0;
856
857 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
858
859 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
860 if (ret < 0) {
861 wl1251_warning("could not set keys");
862 goto out_sleep;
863 }
864
865 out_sleep:
866 wl1251_ps_elp_sleep(wl);
867
868 out_unlock:
869 mutex_unlock(&wl->mutex);
870
871 out:
872 kfree(wl_cmd);
873
874 return ret;
875 }
876
wl1251_op_hw_scan(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct cfg80211_scan_request * req)877 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
878 struct ieee80211_vif *vif,
879 struct cfg80211_scan_request *req)
880 {
881 struct wl1251 *wl = hw->priv;
882 struct sk_buff *skb;
883 size_t ssid_len = 0;
884 u8 *ssid = NULL;
885 int ret;
886
887 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
888
889 if (req->n_ssids) {
890 ssid = req->ssids[0].ssid;
891 ssid_len = req->ssids[0].ssid_len;
892 }
893
894 mutex_lock(&wl->mutex);
895
896 if (wl->scanning) {
897 wl1251_debug(DEBUG_SCAN, "scan already in progress");
898 ret = -EINVAL;
899 goto out;
900 }
901
902 ret = wl1251_ps_elp_wakeup(wl);
903 if (ret < 0)
904 goto out;
905
906 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
907 req->ie, req->ie_len);
908 if (!skb) {
909 ret = -ENOMEM;
910 goto out;
911 }
912
913 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
914 skb->len);
915 dev_kfree_skb(skb);
916 if (ret < 0)
917 goto out_sleep;
918
919 ret = wl1251_cmd_trigger_scan_to(wl, 0);
920 if (ret < 0)
921 goto out_sleep;
922
923 wl->scanning = true;
924
925 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
926 req->n_channels, WL1251_SCAN_NUM_PROBES);
927 if (ret < 0) {
928 wl->scanning = false;
929 goto out_sleep;
930 }
931
932 out_sleep:
933 wl1251_ps_elp_sleep(wl);
934
935 out:
936 mutex_unlock(&wl->mutex);
937
938 return ret;
939 }
940
wl1251_op_set_rts_threshold(struct ieee80211_hw * hw,u32 value)941 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
942 {
943 struct wl1251 *wl = hw->priv;
944 int ret;
945
946 mutex_lock(&wl->mutex);
947
948 ret = wl1251_ps_elp_wakeup(wl);
949 if (ret < 0)
950 goto out;
951
952 ret = wl1251_acx_rts_threshold(wl, (u16) value);
953 if (ret < 0)
954 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
955
956 wl1251_ps_elp_sleep(wl);
957
958 out:
959 mutex_unlock(&wl->mutex);
960
961 return ret;
962 }
963
wl1251_op_bss_info_changed(struct ieee80211_hw * hw,struct ieee80211_vif * vif,struct ieee80211_bss_conf * bss_conf,u32 changed)964 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
965 struct ieee80211_vif *vif,
966 struct ieee80211_bss_conf *bss_conf,
967 u32 changed)
968 {
969 struct wl1251 *wl = hw->priv;
970 struct sk_buff *beacon, *skb;
971 int ret;
972
973 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
974
975 mutex_lock(&wl->mutex);
976
977 ret = wl1251_ps_elp_wakeup(wl);
978 if (ret < 0)
979 goto out;
980
981 if (changed & BSS_CHANGED_CQM) {
982 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
983 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
984 WL1251_DEFAULT_LOW_RSSI_DEPTH,
985 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
986 if (ret < 0)
987 goto out;
988 wl->rssi_thold = bss_conf->cqm_rssi_thold;
989 }
990
991 if (changed & BSS_CHANGED_BSSID) {
992 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
993
994 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
995 if (!skb)
996 goto out_sleep;
997
998 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
999 skb->data, skb->len);
1000 dev_kfree_skb(skb);
1001 if (ret < 0)
1002 goto out_sleep;
1003
1004 ret = wl1251_build_qos_null_data(wl);
1005 if (ret < 0)
1006 goto out;
1007
1008 if (wl->bss_type != BSS_TYPE_IBSS) {
1009 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1010 wl->beacon_int, wl->dtim_period);
1011 if (ret < 0)
1012 goto out_sleep;
1013 }
1014 }
1015
1016 if (changed & BSS_CHANGED_ASSOC) {
1017 if (bss_conf->assoc) {
1018 wl->beacon_int = bss_conf->beacon_int;
1019
1020 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1021 if (!skb)
1022 goto out_sleep;
1023
1024 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1025 skb->data,
1026 skb->len);
1027 dev_kfree_skb(skb);
1028 if (ret < 0)
1029 goto out_sleep;
1030
1031 ret = wl1251_acx_aid(wl, bss_conf->aid);
1032 if (ret < 0)
1033 goto out_sleep;
1034 } else {
1035 /* use defaults when not associated */
1036 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1037 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1038 }
1039 }
1040 if (changed & BSS_CHANGED_ERP_SLOT) {
1041 if (bss_conf->use_short_slot)
1042 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1043 else
1044 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1045 if (ret < 0) {
1046 wl1251_warning("Set slot time failed %d", ret);
1047 goto out_sleep;
1048 }
1049 }
1050
1051 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1052 if (bss_conf->use_short_preamble)
1053 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1054 else
1055 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1056 }
1057
1058 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1059 if (bss_conf->use_cts_prot)
1060 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1061 else
1062 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1063 if (ret < 0) {
1064 wl1251_warning("Set ctsprotect failed %d", ret);
1065 goto out_sleep;
1066 }
1067 }
1068
1069 if (changed & BSS_CHANGED_BEACON) {
1070 beacon = ieee80211_beacon_get(hw, vif);
1071 if (!beacon)
1072 goto out_sleep;
1073
1074 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1075 beacon->len);
1076
1077 if (ret < 0) {
1078 dev_kfree_skb(beacon);
1079 goto out_sleep;
1080 }
1081
1082 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1083 beacon->len);
1084
1085 dev_kfree_skb(beacon);
1086
1087 if (ret < 0)
1088 goto out_sleep;
1089
1090 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1091 wl->channel, wl->dtim_period);
1092
1093 if (ret < 0)
1094 goto out_sleep;
1095 }
1096
1097 out_sleep:
1098 wl1251_ps_elp_sleep(wl);
1099
1100 out:
1101 mutex_unlock(&wl->mutex);
1102 }
1103
1104
1105 /* can't be const, mac80211 writes to this */
1106 static struct ieee80211_rate wl1251_rates[] = {
1107 { .bitrate = 10,
1108 .hw_value = 0x1,
1109 .hw_value_short = 0x1, },
1110 { .bitrate = 20,
1111 .hw_value = 0x2,
1112 .hw_value_short = 0x2,
1113 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1114 { .bitrate = 55,
1115 .hw_value = 0x4,
1116 .hw_value_short = 0x4,
1117 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1118 { .bitrate = 110,
1119 .hw_value = 0x20,
1120 .hw_value_short = 0x20,
1121 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1122 { .bitrate = 60,
1123 .hw_value = 0x8,
1124 .hw_value_short = 0x8, },
1125 { .bitrate = 90,
1126 .hw_value = 0x10,
1127 .hw_value_short = 0x10, },
1128 { .bitrate = 120,
1129 .hw_value = 0x40,
1130 .hw_value_short = 0x40, },
1131 { .bitrate = 180,
1132 .hw_value = 0x80,
1133 .hw_value_short = 0x80, },
1134 { .bitrate = 240,
1135 .hw_value = 0x200,
1136 .hw_value_short = 0x200, },
1137 { .bitrate = 360,
1138 .hw_value = 0x400,
1139 .hw_value_short = 0x400, },
1140 { .bitrate = 480,
1141 .hw_value = 0x800,
1142 .hw_value_short = 0x800, },
1143 { .bitrate = 540,
1144 .hw_value = 0x1000,
1145 .hw_value_short = 0x1000, },
1146 };
1147
1148 /* can't be const, mac80211 writes to this */
1149 static struct ieee80211_channel wl1251_channels[] = {
1150 { .hw_value = 1, .center_freq = 2412},
1151 { .hw_value = 2, .center_freq = 2417},
1152 { .hw_value = 3, .center_freq = 2422},
1153 { .hw_value = 4, .center_freq = 2427},
1154 { .hw_value = 5, .center_freq = 2432},
1155 { .hw_value = 6, .center_freq = 2437},
1156 { .hw_value = 7, .center_freq = 2442},
1157 { .hw_value = 8, .center_freq = 2447},
1158 { .hw_value = 9, .center_freq = 2452},
1159 { .hw_value = 10, .center_freq = 2457},
1160 { .hw_value = 11, .center_freq = 2462},
1161 { .hw_value = 12, .center_freq = 2467},
1162 { .hw_value = 13, .center_freq = 2472},
1163 };
1164
wl1251_op_conf_tx(struct ieee80211_hw * hw,struct ieee80211_vif * vif,u16 queue,const struct ieee80211_tx_queue_params * params)1165 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1166 struct ieee80211_vif *vif, u16 queue,
1167 const struct ieee80211_tx_queue_params *params)
1168 {
1169 enum wl1251_acx_ps_scheme ps_scheme;
1170 struct wl1251 *wl = hw->priv;
1171 int ret;
1172
1173 mutex_lock(&wl->mutex);
1174
1175 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1176
1177 ret = wl1251_ps_elp_wakeup(wl);
1178 if (ret < 0)
1179 goto out;
1180
1181 /* mac80211 uses units of 32 usec */
1182 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1183 params->cw_min, params->cw_max,
1184 params->aifs, params->txop * 32);
1185 if (ret < 0)
1186 goto out_sleep;
1187
1188 if (params->uapsd)
1189 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1190 else
1191 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1192
1193 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1194 CHANNEL_TYPE_EDCF,
1195 wl1251_tx_get_queue(queue), ps_scheme,
1196 WL1251_ACX_ACK_POLICY_LEGACY);
1197 if (ret < 0)
1198 goto out_sleep;
1199
1200 out_sleep:
1201 wl1251_ps_elp_sleep(wl);
1202
1203 out:
1204 mutex_unlock(&wl->mutex);
1205
1206 return ret;
1207 }
1208
wl1251_op_get_survey(struct ieee80211_hw * hw,int idx,struct survey_info * survey)1209 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1210 struct survey_info *survey)
1211 {
1212 struct wl1251 *wl = hw->priv;
1213 struct ieee80211_conf *conf = &hw->conf;
1214
1215 if (idx != 0)
1216 return -ENOENT;
1217
1218 survey->channel = conf->channel;
1219 survey->filled = SURVEY_INFO_NOISE_DBM;
1220 survey->noise = wl->noise;
1221
1222 return 0;
1223 }
1224
1225 /* can't be const, mac80211 writes to this */
1226 static struct ieee80211_supported_band wl1251_band_2ghz = {
1227 .channels = wl1251_channels,
1228 .n_channels = ARRAY_SIZE(wl1251_channels),
1229 .bitrates = wl1251_rates,
1230 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1231 };
1232
1233 static const struct ieee80211_ops wl1251_ops = {
1234 .start = wl1251_op_start,
1235 .stop = wl1251_op_stop,
1236 .add_interface = wl1251_op_add_interface,
1237 .remove_interface = wl1251_op_remove_interface,
1238 .config = wl1251_op_config,
1239 .configure_filter = wl1251_op_configure_filter,
1240 .tx = wl1251_op_tx,
1241 .set_key = wl1251_op_set_key,
1242 .hw_scan = wl1251_op_hw_scan,
1243 .bss_info_changed = wl1251_op_bss_info_changed,
1244 .set_rts_threshold = wl1251_op_set_rts_threshold,
1245 .conf_tx = wl1251_op_conf_tx,
1246 .get_survey = wl1251_op_get_survey,
1247 };
1248
wl1251_read_eeprom_byte(struct wl1251 * wl,off_t offset,u8 * data)1249 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1250 {
1251 unsigned long timeout;
1252
1253 wl1251_reg_write32(wl, EE_ADDR, offset);
1254 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1255
1256 /* EE_CTL_READ clears when data is ready */
1257 timeout = jiffies + msecs_to_jiffies(100);
1258 while (1) {
1259 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1260 break;
1261
1262 if (time_after(jiffies, timeout))
1263 return -ETIMEDOUT;
1264
1265 msleep(1);
1266 }
1267
1268 *data = wl1251_reg_read32(wl, EE_DATA);
1269 return 0;
1270 }
1271
wl1251_read_eeprom(struct wl1251 * wl,off_t offset,u8 * data,size_t len)1272 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1273 u8 *data, size_t len)
1274 {
1275 size_t i;
1276 int ret;
1277
1278 wl1251_reg_write32(wl, EE_START, 0);
1279
1280 for (i = 0; i < len; i++) {
1281 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1282 if (ret < 0)
1283 return ret;
1284 }
1285
1286 return 0;
1287 }
1288
wl1251_read_eeprom_mac(struct wl1251 * wl)1289 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1290 {
1291 u8 mac[ETH_ALEN];
1292 int i, ret;
1293
1294 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1295
1296 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1297 if (ret < 0) {
1298 wl1251_warning("failed to read MAC address from EEPROM");
1299 return ret;
1300 }
1301
1302 /* MAC is stored in reverse order */
1303 for (i = 0; i < ETH_ALEN; i++)
1304 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1305
1306 return 0;
1307 }
1308
wl1251_register_hw(struct wl1251 * wl)1309 static int wl1251_register_hw(struct wl1251 *wl)
1310 {
1311 int ret;
1312
1313 if (wl->mac80211_registered)
1314 return 0;
1315
1316 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1317
1318 ret = ieee80211_register_hw(wl->hw);
1319 if (ret < 0) {
1320 wl1251_error("unable to register mac80211 hw: %d", ret);
1321 return ret;
1322 }
1323
1324 wl->mac80211_registered = true;
1325
1326 wl1251_notice("loaded");
1327
1328 return 0;
1329 }
1330
wl1251_init_ieee80211(struct wl1251 * wl)1331 int wl1251_init_ieee80211(struct wl1251 *wl)
1332 {
1333 int ret;
1334
1335 /* The tx descriptor buffer and the TKIP space */
1336 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1337 + WL1251_TKIP_IV_SPACE;
1338
1339 /* unit us */
1340 /* FIXME: find a proper value */
1341 wl->hw->channel_change_time = 10000;
1342
1343 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1344 IEEE80211_HW_SUPPORTS_PS |
1345 IEEE80211_HW_SUPPORTS_UAPSD;
1346
1347 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1348 BIT(NL80211_IFTYPE_ADHOC);
1349 wl->hw->wiphy->max_scan_ssids = 1;
1350 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1351
1352 wl->hw->queues = 4;
1353
1354 if (wl->use_eeprom)
1355 wl1251_read_eeprom_mac(wl);
1356
1357 ret = wl1251_register_hw(wl);
1358 if (ret)
1359 goto out;
1360
1361 wl1251_debugfs_init(wl);
1362 wl1251_notice("initialized");
1363
1364 ret = 0;
1365
1366 out:
1367 return ret;
1368 }
1369 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1370
wl1251_alloc_hw(void)1371 struct ieee80211_hw *wl1251_alloc_hw(void)
1372 {
1373 struct ieee80211_hw *hw;
1374 struct wl1251 *wl;
1375 int i;
1376 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1377
1378 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1379 if (!hw) {
1380 wl1251_error("could not alloc ieee80211_hw");
1381 return ERR_PTR(-ENOMEM);
1382 }
1383
1384 wl = hw->priv;
1385 memset(wl, 0, sizeof(*wl));
1386
1387 wl->hw = hw;
1388
1389 wl->data_in_count = 0;
1390
1391 skb_queue_head_init(&wl->tx_queue);
1392
1393 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1394 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1395 wl->channel = WL1251_DEFAULT_CHANNEL;
1396 wl->scanning = false;
1397 wl->default_key = 0;
1398 wl->listen_int = 1;
1399 wl->rx_counter = 0;
1400 wl->rx_handled = 0;
1401 wl->rx_current_buffer = 0;
1402 wl->rx_last_id = 0;
1403 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1404 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1405 wl->elp = false;
1406 wl->station_mode = STATION_ACTIVE_MODE;
1407 wl->psm_requested = false;
1408 wl->tx_queue_stopped = false;
1409 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1410 wl->rssi_thold = 0;
1411 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1412 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1413 wl->vif = NULL;
1414
1415 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1416 wl->tx_frames[i] = NULL;
1417
1418 wl->next_tx_complete = 0;
1419
1420 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1421 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1422
1423 /*
1424 * In case our MAC address is not correctly set,
1425 * we use a random but Nokia MAC.
1426 */
1427 memcpy(wl->mac_addr, nokia_oui, 3);
1428 get_random_bytes(wl->mac_addr + 3, 3);
1429
1430 wl->state = WL1251_STATE_OFF;
1431 mutex_init(&wl->mutex);
1432
1433 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1434 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1435
1436 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1437 if (!wl->rx_descriptor) {
1438 wl1251_error("could not allocate memory for rx descriptor");
1439 ieee80211_free_hw(hw);
1440 return ERR_PTR(-ENOMEM);
1441 }
1442
1443 return hw;
1444 }
1445 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1446
wl1251_free_hw(struct wl1251 * wl)1447 int wl1251_free_hw(struct wl1251 *wl)
1448 {
1449 ieee80211_unregister_hw(wl->hw);
1450
1451 wl1251_debugfs_exit(wl);
1452
1453 kfree(wl->target_mem_map);
1454 kfree(wl->data_path);
1455 vfree(wl->fw);
1456 wl->fw = NULL;
1457 kfree(wl->nvs);
1458 wl->nvs = NULL;
1459
1460 kfree(wl->rx_descriptor);
1461 wl->rx_descriptor = NULL;
1462
1463 ieee80211_free_hw(wl->hw);
1464
1465 return 0;
1466 }
1467 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1468
1469 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1470 MODULE_LICENSE("GPL");
1471 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1472 MODULE_FIRMWARE(WL1251_FW_NAME);
1473