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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / wl12xx / wl1251_main.c
blob6aeffbe9e40187ce03a4451d518e3f30a9adae5e
1 /*
2 * This file is part of wl1251
3 *
4 * Copyright (C) 2008-2009 Nokia Corporation
5 *
6 * Contact: Kalle Valo <kalle.valo@nokia.com>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
21 *
22 */
23
24 #include <linux/module.h>
25 #include <linux/interrupt.h>
26 #include <linux/firmware.h>
27 #include <linux/delay.h>
28 #include <linux/irq.h>
29 #include <linux/crc32.h>
30 #include <linux/etherdevice.h>
31 #include <linux/vmalloc.h>
32
33 #include "wl1251.h"
34 #include "wl12xx_80211.h"
35 #include "wl1251_reg.h"
36 #include "wl1251_io.h"
37 #include "wl1251_cmd.h"
38 #include "wl1251_event.h"
39 #include "wl1251_tx.h"
40 #include "wl1251_rx.h"
41 #include "wl1251_ps.h"
42 #include "wl1251_init.h"
43 #include "wl1251_debugfs.h"
44 #include "wl1251_boot.h"
45
46 void wl1251_enable_interrupts(struct wl1251 *wl)
47 {
48 wl->if_ops->enable_irq(wl);
49 }
50
51 void wl1251_disable_interrupts(struct wl1251 *wl)
52 {
53 wl->if_ops->disable_irq(wl);
54 }
55
56 static void wl1251_power_off(struct wl1251 *wl)
57 {
58 wl->set_power(false);
59 }
60
61 static void wl1251_power_on(struct wl1251 *wl)
62 {
63 wl->set_power(true);
64 }
65
66 static int wl1251_fetch_firmware(struct wl1251 *wl)
67 {
68 const struct firmware *fw;
69 struct device *dev = wiphy_dev(wl->hw->wiphy);
70 int ret;
71
72 ret = request_firmware(&fw, WL1251_FW_NAME, dev);
73
74 if (ret < 0) {
75 wl1251_error("could not get firmware: %d", ret);
76 return ret;
77 }
78
79 if (fw->size % 4) {
80 wl1251_error("firmware size is not multiple of 32 bits: %zu",
81 fw->size);
82 ret = -EILSEQ;
83 goto out;
84 }
85
86 wl->fw_len = fw->size;
87 wl->fw = vmalloc(wl->fw_len);
88
89 if (!wl->fw) {
90 wl1251_error("could not allocate memory for the firmware");
91 ret = -ENOMEM;
92 goto out;
93 }
94
95 memcpy(wl->fw, fw->data, wl->fw_len);
96
97 ret = 0;
98
99 out:
100 release_firmware(fw);
101
102 return ret;
103 }
104
105 static int wl1251_fetch_nvs(struct wl1251 *wl)
106 {
107 const struct firmware *fw;
108 struct device *dev = wiphy_dev(wl->hw->wiphy);
109 int ret;
110
111 ret = request_firmware(&fw, WL1251_NVS_NAME, dev);
112
113 if (ret < 0) {
114 wl1251_error("could not get nvs file: %d", ret);
115 return ret;
116 }
117
118 if (fw->size % 4) {
119 wl1251_error("nvs size is not multiple of 32 bits: %zu",
120 fw->size);
121 ret = -EILSEQ;
122 goto out;
123 }
124
125 wl->nvs_len = fw->size;
126 wl->nvs = kmalloc(wl->nvs_len, GFP_KERNEL);
127
128 if (!wl->nvs) {
129 wl1251_error("could not allocate memory for the nvs file");
130 ret = -ENOMEM;
131 goto out;
132 }
133
134 memcpy(wl->nvs, fw->data, wl->nvs_len);
135
136 ret = 0;
137
138 out:
139 release_firmware(fw);
140
141 return ret;
142 }
143
144 static void wl1251_fw_wakeup(struct wl1251 *wl)
145 {
146 u32 elp_reg;
147
148 elp_reg = ELPCTRL_WAKE_UP;
149 wl1251_write32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
150 elp_reg = wl1251_read32(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
151
152 if (!(elp_reg & ELPCTRL_WLAN_READY))
153 wl1251_warning("WLAN not ready");
154 }
155
156 static int wl1251_chip_wakeup(struct wl1251 *wl)
157 {
158 int ret = 0;
159
160 wl1251_power_on(wl);
161 msleep(WL1251_POWER_ON_SLEEP);
162 wl->if_ops->reset(wl);
163
164 /* We don't need a real memory partition here, because we only want
165 * to use the registers at this point. */
166 wl1251_set_partition(wl,
167 0x00000000,
168 0x00000000,
169 REGISTERS_BASE,
170 REGISTERS_DOWN_SIZE);
171
172 /* ELP module wake up */
173 wl1251_fw_wakeup(wl);
174
175 /* whal_FwCtrl_BootSm() */
176
177 /* 0. read chip id from CHIP_ID */
178 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
179
180 /* 1. check if chip id is valid */
181
182 switch (wl->chip_id) {
183 case CHIP_ID_1251_PG12:
184 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
185 wl->chip_id);
186 break;
187 case CHIP_ID_1251_PG11:
188 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
189 wl->chip_id);
190 break;
191 case CHIP_ID_1251_PG10:
192 default:
193 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
194 ret = -ENODEV;
195 goto out;
196 }
197
198 if (wl->fw == NULL) {
199 ret = wl1251_fetch_firmware(wl);
200 if (ret < 0)
201 goto out;
202 }
203
204 /* No NVS from netlink, try to get it from the filesystem */
205 if (wl->nvs == NULL) {
206 ret = wl1251_fetch_nvs(wl);
207 if (ret < 0)
208 goto out;
209 }
210
211 out:
212 return ret;
213 }
214
215 #define WL1251_IRQ_LOOP_COUNT 10
216 static void wl1251_irq_work(struct work_struct *work)
217 {
218 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
219 struct wl1251 *wl =
220 container_of(work, struct wl1251, irq_work);
221 int ret;
222
223 mutex_lock(&wl->mutex);
224
225 wl1251_debug(DEBUG_IRQ, "IRQ work");
226
227 if (wl->state == WL1251_STATE_OFF)
228 goto out;
229
230 ret = wl1251_ps_elp_wakeup(wl);
231 if (ret < 0)
232 goto out;
233
234 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
235
236 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
237 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
238
239 do {
240 if (wl->data_path) {
241 wl->rx_counter = wl1251_mem_read32(
242 wl, wl->data_path->rx_control_addr);
243
244 /* We handle a frmware bug here */
245 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
246 case 0:
247 wl1251_debug(DEBUG_IRQ,
248 "RX: FW and host in sync");
249 intr &= ~WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
251 break;
252 case 1:
253 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr &= ~WL1251_ACX_INTR_RX1_DATA;
256 break;
257 case 2:
258 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
259 intr |= WL1251_ACX_INTR_RX0_DATA;
260 intr |= WL1251_ACX_INTR_RX1_DATA;
261 break;
262 default:
263 wl1251_warning(
264 "RX: FW and host out of sync: %d",
265 wl->rx_counter - wl->rx_handled);
266 break;
267 }
268
269 wl->rx_handled = wl->rx_counter;
270
271 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
272 wl->rx_counter);
273 }
274
275 intr &= wl->intr_mask;
276
277 if (intr == 0) {
278 wl1251_debug(DEBUG_IRQ, "INTR is 0");
279 goto out_sleep;
280 }
281
282 if (intr & WL1251_ACX_INTR_RX0_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_RX1_DATA) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
289 wl1251_rx(wl);
290 }
291
292 if (intr & WL1251_ACX_INTR_TX_RESULT) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
294 wl1251_tx_complete(wl);
295 }
296
297 if (intr & (WL1251_ACX_INTR_EVENT_A |
298 WL1251_ACX_INTR_EVENT_B)) {
299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT (0x%x)",
300 intr);
301 if (intr & WL1251_ACX_INTR_EVENT_A)
302 wl1251_event_handle(wl, 0);
303 else
304 wl1251_event_handle(wl, 1);
305 }
306
307 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
308 wl1251_debug(DEBUG_IRQ,
309 "WL1251_ACX_INTR_INIT_COMPLETE");
310
311 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
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 /*
344 * FIXME: we should wait for JOIN_EVENT_COMPLETE_ID but to simplify
345 * locking we just sleep instead, for now
346 */
347 msleep(10);
348
349 out:
350 return ret;
351 }
352
353 static void wl1251_filter_work(struct work_struct *work)
354 {
355 struct wl1251 *wl =
356 container_of(work, struct wl1251, filter_work);
357 int ret;
358
359 mutex_lock(&wl->mutex);
360
361 if (wl->state == WL1251_STATE_OFF)
362 goto out;
363
364 ret = wl1251_ps_elp_wakeup(wl);
365 if (ret < 0)
366 goto out;
367
368 ret = wl1251_join(wl, wl->bss_type, wl->channel, wl->beacon_int,
369 wl->dtim_period);
370 if (ret < 0)
371 goto out_sleep;
372
373 out_sleep:
374 wl1251_ps_elp_sleep(wl);
375
376 out:
377 mutex_unlock(&wl->mutex);
378 }
379
380 static int wl1251_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
381 {
382 struct wl1251 *wl = hw->priv;
383
384 skb_queue_tail(&wl->tx_queue, skb);
385
386 /*
387 * The chip specific setup must run before the first TX packet -
388 * before that, the tx_work will not be initialized!
389 */
390
391 ieee80211_queue_work(wl->hw, &wl->tx_work);
392
393 /*
394 * The workqueue is slow to process the tx_queue and we need stop
395 * the queue here, otherwise the queue will get too long.
396 */
397 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_MAX_LENGTH) {
398 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
399 ieee80211_stop_queues(wl->hw);
400
401 /*
402 * FIXME: this is racy, the variable is not properly
403 * protected. Maybe fix this by removing the stupid
404 * variable altogether and checking the real queue state?
405 */
406 wl->tx_queue_stopped = true;
407 }
408
409 return NETDEV_TX_OK;
410 }
411
412 static int wl1251_op_start(struct ieee80211_hw *hw)
413 {
414 struct wl1251 *wl = hw->priv;
415 int ret = 0;
416
417 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
418
419 mutex_lock(&wl->mutex);
420
421 if (wl->state != WL1251_STATE_OFF) {
422 wl1251_error("cannot start because not in off state: %d",
423 wl->state);
424 ret = -EBUSY;
425 goto out;
426 }
427
428 ret = wl1251_chip_wakeup(wl);
429 if (ret < 0)
430 goto out;
431
432 ret = wl1251_boot(wl);
433 if (ret < 0)
434 goto out;
435
436 ret = wl1251_hw_init(wl);
437 if (ret < 0)
438 goto out;
439
440 ret = wl1251_acx_station_id(wl);
441 if (ret < 0)
442 goto out;
443
444 wl->state = WL1251_STATE_ON;
445
446 wl1251_info("firmware booted (%s)", wl->fw_ver);
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_if_init_conf *conf)
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 conf->type, conf->mac_addr);
521
522 mutex_lock(&wl->mutex);
523 if (wl->vif) {
524 ret = -EBUSY;
525 goto out;
526 }
527
528 wl->vif = conf->vif;
529
530 switch (conf->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, conf->mac_addr, ETH_ALEN)) {
543 memcpy(wl->mac_addr, conf->mac_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_if_init_conf *conf)
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_null_data(struct wl1251 *wl)
567 {
568 struct wl12xx_null_data_template template;
569
570 if (!is_zero_ether_addr(wl->bssid)) {
571 memcpy(template.header.da, wl->bssid, ETH_ALEN);
572 memcpy(template.header.bssid, wl->bssid, ETH_ALEN);
573 } else {
574 memset(template.header.da, 0xff, ETH_ALEN);
575 memset(template.header.bssid, 0xff, ETH_ALEN);
576 }
577
578 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
579 template.header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_DATA |
580 IEEE80211_STYPE_NULLFUNC |
581 IEEE80211_FCTL_TODS);
582
583 return wl1251_cmd_template_set(wl, CMD_NULL_DATA, &template,
584 sizeof(template));
585
586 }
587
588 static int wl1251_build_ps_poll(struct wl1251 *wl, u16 aid)
589 {
590 struct wl12xx_ps_poll_template template;
591
592 memcpy(template.bssid, wl->bssid, ETH_ALEN);
593 memcpy(template.ta, wl->mac_addr, ETH_ALEN);
594
595 /* aid in PS-Poll has its two MSBs each set to 1 */
596 template.aid = cpu_to_le16(1 << 15 | 1 << 14 | aid);
597
598 template.fc = cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
599
600 return wl1251_cmd_template_set(wl, CMD_PS_POLL, &template,
601 sizeof(template));
602
603 }
604
605 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
606 {
607 struct wl1251 *wl = hw->priv;
608 struct ieee80211_conf *conf = &hw->conf;
609 int channel, ret = 0;
610
611 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
612
613 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
614 channel,
615 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
616 conf->power_level);
617
618 mutex_lock(&wl->mutex);
619
620 ret = wl1251_ps_elp_wakeup(wl);
621 if (ret < 0)
622 goto out;
623
624 if (channel != wl->channel) {
625 wl->channel = channel;
626
627 ret = wl1251_join(wl, wl->bss_type, wl->channel,
628 wl->beacon_int, wl->dtim_period);
629 if (ret < 0)
630 goto out_sleep;
631 }
632
633 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
634 wl1251_debug(DEBUG_PSM, "psm enabled");
635
636 wl->psm_requested = true;
637
638 /*
639 * We enter PSM only if we're already associated.
640 * If we're not, we'll enter it when joining an SSID,
641 * through the bss_info_changed() hook.
642 */
643 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
644 if (ret < 0)
645 goto out_sleep;
646 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
647 wl->psm_requested) {
648 wl1251_debug(DEBUG_PSM, "psm disabled");
649
650 wl->psm_requested = false;
651
652 if (wl->psm) {
653 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
654 if (ret < 0)
655 goto out_sleep;
656 }
657 }
658
659 if (conf->power_level != wl->power_level) {
660 ret = wl1251_acx_tx_power(wl, conf->power_level);
661 if (ret < 0)
662 goto out_sleep;
663
664 wl->power_level = conf->power_level;
665 }
666
667 out_sleep:
668 wl1251_ps_elp_sleep(wl);
669
670 out:
671 mutex_unlock(&wl->mutex);
672
673 return ret;
674 }
675
676 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
677 FIF_ALLMULTI | \
678 FIF_FCSFAIL | \
679 FIF_BCN_PRBRESP_PROMISC | \
680 FIF_CONTROL | \
681 FIF_OTHER_BSS)
682
683 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
684 unsigned int changed,
685 unsigned int *total,u64 multicast)
686 {
687 struct wl1251 *wl = hw->priv;
688
689 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
690
691 *total &= WL1251_SUPPORTED_FILTERS;
692 changed &= WL1251_SUPPORTED_FILTERS;
693
694 if (changed == 0)
695 /* no filters which we support changed */
696 return;
697
698 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
699
700 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
701 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
702
703 if (*total & FIF_PROMISC_IN_BSS) {
704 wl->rx_config |= CFG_BSSID_FILTER_EN;
705 wl->rx_config |= CFG_RX_ALL_GOOD;
706 }
707 if (*total & FIF_ALLMULTI)
708 /*
709 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
710 * all multicast frames
711 */
712 wl->rx_config &= ~CFG_MC_FILTER_EN;
713 if (*total & FIF_FCSFAIL)
714 wl->rx_filter |= CFG_RX_FCS_ERROR;
715 if (*total & FIF_BCN_PRBRESP_PROMISC) {
716 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
717 wl->rx_config &= ~CFG_SSID_FILTER_EN;
718 }
719 if (*total & FIF_CONTROL)
720 wl->rx_filter |= CFG_RX_CTL_EN;
721 if (*total & FIF_OTHER_BSS)
722 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
723
724 /*
725 * FIXME: workqueues need to be properly cancelled on stop(), for
726 * now let's just disable changing the filter settings. They will
727 * be updated any on config().
728 */
729 /* schedule_work(&wl->filter_work); */
730 }
731
732 /* HW encryption */
733 static int wl1251_set_key_type(struct wl1251 *wl,
734 struct wl1251_cmd_set_keys *key,
735 enum set_key_cmd cmd,
736 struct ieee80211_key_conf *mac80211_key,
737 const u8 *addr)
738 {
739 switch (mac80211_key->alg) {
740 case ALG_WEP:
741 if (is_broadcast_ether_addr(addr))
742 key->key_type = KEY_WEP_DEFAULT;
743 else
744 key->key_type = KEY_WEP_ADDR;
745
746 mac80211_key->hw_key_idx = mac80211_key->keyidx;
747 break;
748 case ALG_TKIP:
749 if (is_broadcast_ether_addr(addr))
750 key->key_type = KEY_TKIP_MIC_GROUP;
751 else
752 key->key_type = KEY_TKIP_MIC_PAIRWISE;
753
754 mac80211_key->hw_key_idx = mac80211_key->keyidx;
755 break;
756 case ALG_CCMP:
757 if (is_broadcast_ether_addr(addr))
758 key->key_type = KEY_AES_GROUP;
759 else
760 key->key_type = KEY_AES_PAIRWISE;
761 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
762 break;
763 default:
764 wl1251_error("Unknown key algo 0x%x", mac80211_key->alg);
765 return -EOPNOTSUPP;
766 }
767
768 return 0;
769 }
770
771 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
772 struct ieee80211_vif *vif,
773 struct ieee80211_sta *sta,
774 struct ieee80211_key_conf *key)
775 {
776 struct wl1251 *wl = hw->priv;
777 struct wl1251_cmd_set_keys *wl_cmd;
778 const u8 *addr;
779 int ret;
780
781 static const u8 bcast_addr[ETH_ALEN] =
782 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
783
784 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
785
786 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
787 if (!wl_cmd) {
788 ret = -ENOMEM;
789 goto out;
790 }
791
792 addr = sta ? sta->addr : bcast_addr;
793
794 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
795 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
796 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
797 key->alg, key->keyidx, key->keylen, key->flags);
798 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
799
800 if (is_zero_ether_addr(addr)) {
801 /* We dont support TX only encryption */
802 ret = -EOPNOTSUPP;
803 goto out;
804 }
805
806 mutex_lock(&wl->mutex);
807
808 ret = wl1251_ps_elp_wakeup(wl);
809 if (ret < 0)
810 goto out_unlock;
811
812 switch (cmd) {
813 case SET_KEY:
814 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
815 break;
816 case DISABLE_KEY:
817 wl_cmd->key_action = KEY_REMOVE;
818 break;
819 default:
820 wl1251_error("Unsupported key cmd 0x%x", cmd);
821 break;
822 }
823
824 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
825 if (ret < 0) {
826 wl1251_error("Set KEY type failed");
827 goto out_sleep;
828 }
829
830 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
831 memcpy(wl_cmd->addr, addr, ETH_ALEN);
832
833 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
834 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
835 /*
836 * We get the key in the following form:
837 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
838 * but the target is expecting:
839 * TKIP - RX MIC - TX MIC
840 */
841 memcpy(wl_cmd->key, key->key, 16);
842 memcpy(wl_cmd->key + 16, key->key + 24, 8);
843 memcpy(wl_cmd->key + 24, key->key + 16, 8);
844
845 } else {
846 memcpy(wl_cmd->key, key->key, key->keylen);
847 }
848 wl_cmd->key_size = key->keylen;
849
850 wl_cmd->id = key->keyidx;
851 wl_cmd->ssid_profile = 0;
852
853 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
854
855 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
856 if (ret < 0) {
857 wl1251_warning("could not set keys");
858 goto out_sleep;
859 }
860
861 out_sleep:
862 wl1251_ps_elp_sleep(wl);
863
864 out_unlock:
865 mutex_unlock(&wl->mutex);
866
867 out:
868 kfree(wl_cmd);
869
870 return ret;
871 }
872
873 static int wl1251_build_basic_rates(char *rates)
874 {
875 u8 index = 0;
876
877 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_1MB;
878 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_2MB;
879 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_5MB;
880 rates[index++] = IEEE80211_BASIC_RATE_MASK | IEEE80211_CCK_RATE_11MB;
881
882 return index;
883 }
884
885 static int wl1251_build_extended_rates(char *rates)
886 {
887 u8 index = 0;
888
889 rates[index++] = IEEE80211_OFDM_RATE_6MB;
890 rates[index++] = IEEE80211_OFDM_RATE_9MB;
891 rates[index++] = IEEE80211_OFDM_RATE_12MB;
892 rates[index++] = IEEE80211_OFDM_RATE_18MB;
893 rates[index++] = IEEE80211_OFDM_RATE_24MB;
894 rates[index++] = IEEE80211_OFDM_RATE_36MB;
895 rates[index++] = IEEE80211_OFDM_RATE_48MB;
896 rates[index++] = IEEE80211_OFDM_RATE_54MB;
897
898 return index;
899 }
900
901
902 static int wl1251_build_probe_req(struct wl1251 *wl, u8 *ssid, size_t ssid_len)
903 {
904 struct wl12xx_probe_req_template template;
905 struct wl12xx_ie_rates *rates;
906 char *ptr;
907 u16 size;
908
909 ptr = (char *)&template;
910 size = sizeof(struct ieee80211_header);
911
912 memset(template.header.da, 0xff, ETH_ALEN);
913 memset(template.header.bssid, 0xff, ETH_ALEN);
914 memcpy(template.header.sa, wl->mac_addr, ETH_ALEN);
915 template.header.frame_ctl = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
916
917 /* IEs */
918 /* SSID */
919 template.ssid.header.id = WLAN_EID_SSID;
920 template.ssid.header.len = ssid_len;
921 if (ssid_len && ssid)
922 memcpy(template.ssid.ssid, ssid, ssid_len);
923 size += sizeof(struct wl12xx_ie_header) + ssid_len;
924 ptr += size;
925
926 /* Basic Rates */
927 rates = (struct wl12xx_ie_rates *)ptr;
928 rates->header.id = WLAN_EID_SUPP_RATES;
929 rates->header.len = wl1251_build_basic_rates(rates->rates);
930 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
931 ptr += sizeof(struct wl12xx_ie_header) + rates->header.len;
932
933 /* Extended rates */
934 rates = (struct wl12xx_ie_rates *)ptr;
935 rates->header.id = WLAN_EID_EXT_SUPP_RATES;
936 rates->header.len = wl1251_build_extended_rates(rates->rates);
937 size += sizeof(struct wl12xx_ie_header) + rates->header.len;
938
939 wl1251_dump(DEBUG_SCAN, "PROBE REQ: ", &template, size);
940
941 return wl1251_cmd_template_set(wl, CMD_PROBE_REQ, &template,
942 size);
943 }
944
945 static int wl1251_hw_scan(struct wl1251 *wl, u8 *ssid, size_t len,
946 u8 active_scan, u8 high_prio, u8 num_channels,
947 u8 probe_requests)
948 {
949 struct wl1251_cmd_trigger_scan_to *trigger = NULL;
950 struct cmd_scan *params = NULL;
951 int i, ret;
952 u16 scan_options = 0;
953
954 if (wl->scanning)
955 return -EINVAL;
956
957 params = kzalloc(sizeof(*params), GFP_KERNEL);
958 if (!params)
959 return -ENOMEM;
960
961 params->params.rx_config_options = cpu_to_le32(CFG_RX_ALL_GOOD);
962 params->params.rx_filter_options =
963 cpu_to_le32(CFG_RX_PRSP_EN | CFG_RX_MGMT_EN | CFG_RX_BCN_EN);
964
965 /* High priority scan */
966 if (!active_scan)
967 scan_options |= SCAN_PASSIVE;
968 if (high_prio)
969 scan_options |= SCAN_PRIORITY_HIGH;
970 params->params.scan_options = scan_options;
971
972 params->params.num_channels = num_channels;
973 params->params.num_probe_requests = probe_requests;
974 params->params.tx_rate = cpu_to_le16(1 << 1); /* 2 Mbps */
975 params->params.tid_trigger = 0;
976
977 for (i = 0; i < num_channels; i++) {
978 params->channels[i].min_duration = cpu_to_le32(30000);
979 params->channels[i].max_duration = cpu_to_le32(60000);
980 memset(&params->channels[i].bssid_lsb, 0xff, 4);
981 memset(&params->channels[i].bssid_msb, 0xff, 2);
982 params->channels[i].early_termination = 0;
983 params->channels[i].tx_power_att = 0;
984 params->channels[i].channel = i + 1;
985 memset(params->channels[i].pad, 0, 3);
986 }
987
988 for (i = num_channels; i < SCAN_MAX_NUM_OF_CHANNELS; i++)
989 memset(&params->channels[i], 0,
990 sizeof(struct basic_scan_channel_parameters));
991
992 if (len && ssid) {
993 params->params.ssid_len = len;
994 memcpy(params->params.ssid, ssid, len);
995 } else {
996 params->params.ssid_len = 0;
997 memset(params->params.ssid, 0, 32);
998 }
999
1000 ret = wl1251_build_probe_req(wl, ssid, len);
1001 if (ret < 0) {
1002 wl1251_error("PROBE request template failed");
1003 goto out;
1004 }
1005
1006 trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
1007 if (!trigger)
1008 goto out;
1009
1010 trigger->timeout = 0;
1011
1012 ret = wl1251_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
1013 sizeof(*trigger));
1014 if (ret < 0) {
1015 wl1251_error("trigger scan to failed for hw scan");
1016 goto out;
1017 }
1018
1019 wl1251_dump(DEBUG_SCAN, "SCAN: ", params, sizeof(*params));
1020
1021 wl->scanning = true;
1022
1023 ret = wl1251_cmd_send(wl, CMD_SCAN, params, sizeof(*params));
1024 if (ret < 0)
1025 wl1251_error("SCAN failed");
1026
1027 wl1251_mem_read(wl, wl->cmd_box_addr, params, sizeof(*params));
1028
1029 if (params->header.status != CMD_STATUS_SUCCESS) {
1030 wl1251_error("TEST command answer error: %d",
1031 params->header.status);
1032 wl->scanning = false;
1033 ret = -EIO;
1034 goto out;
1035 }
1036
1037 out:
1038 kfree(params);
1039 return ret;
1040
1041 }
1042
1043 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
1044 struct cfg80211_scan_request *req)
1045 {
1046 struct wl1251 *wl = hw->priv;
1047 int ret;
1048 u8 *ssid = NULL;
1049 size_t ssid_len = 0;
1050
1051 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1052
1053 if (req->n_ssids) {
1054 ssid = req->ssids[0].ssid;
1055 ssid_len = req->ssids[0].ssid_len;
1056 }
1057
1058 mutex_lock(&wl->mutex);
1059
1060 ret = wl1251_ps_elp_wakeup(wl);
1061 if (ret < 0)
1062 goto out;
1063
1064 ret = wl1251_hw_scan(hw->priv, ssid, ssid_len, 1, 0, 13, 3);
1065
1066 wl1251_ps_elp_sleep(wl);
1067
1068 out:
1069 mutex_unlock(&wl->mutex);
1070
1071 return ret;
1072 }
1073
1074 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1075 {
1076 struct wl1251 *wl = hw->priv;
1077 int ret;
1078
1079 mutex_lock(&wl->mutex);
1080
1081 ret = wl1251_ps_elp_wakeup(wl);
1082 if (ret < 0)
1083 goto out;
1084
1085 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1086 if (ret < 0)
1087 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1088
1089 wl1251_ps_elp_sleep(wl);
1090
1091 out:
1092 mutex_unlock(&wl->mutex);
1093
1094 return ret;
1095 }
1096
1097 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1098 struct ieee80211_vif *vif,
1099 struct ieee80211_bss_conf *bss_conf,
1100 u32 changed)
1101 {
1102 enum wl1251_cmd_ps_mode mode;
1103 struct wl1251 *wl = hw->priv;
1104 struct sk_buff *beacon;
1105 int ret;
1106
1107 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1108
1109 mutex_lock(&wl->mutex);
1110
1111 ret = wl1251_ps_elp_wakeup(wl);
1112 if (ret < 0)
1113 goto out;
1114
1115 if (changed & BSS_CHANGED_BSSID) {
1116 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1117
1118 ret = wl1251_build_null_data(wl);
1119 if (ret < 0)
1120 goto out;
1121
1122 if (wl->bss_type != BSS_TYPE_IBSS) {
1123 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1124 wl->beacon_int, wl->dtim_period);
1125 if (ret < 0)
1126 goto out_sleep;
1127 }
1128 }
1129
1130 if (changed & BSS_CHANGED_ASSOC) {
1131 if (bss_conf->assoc) {
1132 wl->beacon_int = bss_conf->beacon_int;
1133 wl->dtim_period = bss_conf->dtim_period;
1134
1135 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
1136 wl->dtim_period);
1137 wl->aid = bss_conf->aid;
1138
1139 ret = wl1251_build_ps_poll(wl, wl->aid);
1140 if (ret < 0)
1141 goto out_sleep;
1142
1143 ret = wl1251_acx_aid(wl, wl->aid);
1144 if (ret < 0)
1145 goto out_sleep;
1146
1147 /* If we want to go in PSM but we're not there yet */
1148 if (wl->psm_requested && !wl->psm) {
1149 mode = STATION_POWER_SAVE_MODE;
1150 ret = wl1251_ps_set_mode(wl, mode);
1151 if (ret < 0)
1152 goto out_sleep;
1153 }
1154 } else {
1155 /* use defaults when not associated */
1156 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1157 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1158 }
1159 }
1160 if (changed & BSS_CHANGED_ERP_SLOT) {
1161 if (bss_conf->use_short_slot)
1162 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1163 else
1164 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1165 if (ret < 0) {
1166 wl1251_warning("Set slot time failed %d", ret);
1167 goto out_sleep;
1168 }
1169 }
1170
1171 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1172 if (bss_conf->use_short_preamble)
1173 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1174 else
1175 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1176 }
1177
1178 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1179 if (bss_conf->use_cts_prot)
1180 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1181 else
1182 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1183 if (ret < 0) {
1184 wl1251_warning("Set ctsprotect failed %d", ret);
1185 goto out;
1186 }
1187 }
1188
1189 if (changed & BSS_CHANGED_BEACON) {
1190 beacon = ieee80211_beacon_get(hw, vif);
1191 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1192 beacon->len);
1193
1194 if (ret < 0) {
1195 dev_kfree_skb(beacon);
1196 goto out;
1197 }
1198
1199 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1200 beacon->len);
1201
1202 dev_kfree_skb(beacon);
1203
1204 if (ret < 0)
1205 goto out;
1206
1207 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1208 wl->channel, wl->dtim_period);
1209
1210 if (ret < 0)
1211 goto out;
1212 }
1213
1214 out_sleep:
1215 wl1251_ps_elp_sleep(wl);
1216
1217 out:
1218 mutex_unlock(&wl->mutex);
1219 }
1220
1221
1222 /* can't be const, mac80211 writes to this */
1223 static struct ieee80211_rate wl1251_rates[] = {
1224 { .bitrate = 10,
1225 .hw_value = 0x1,
1226 .hw_value_short = 0x1, },
1227 { .bitrate = 20,
1228 .hw_value = 0x2,
1229 .hw_value_short = 0x2,
1230 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1231 { .bitrate = 55,
1232 .hw_value = 0x4,
1233 .hw_value_short = 0x4,
1234 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1235 { .bitrate = 110,
1236 .hw_value = 0x20,
1237 .hw_value_short = 0x20,
1238 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1239 { .bitrate = 60,
1240 .hw_value = 0x8,
1241 .hw_value_short = 0x8, },
1242 { .bitrate = 90,
1243 .hw_value = 0x10,
1244 .hw_value_short = 0x10, },
1245 { .bitrate = 120,
1246 .hw_value = 0x40,
1247 .hw_value_short = 0x40, },
1248 { .bitrate = 180,
1249 .hw_value = 0x80,
1250 .hw_value_short = 0x80, },
1251 { .bitrate = 240,
1252 .hw_value = 0x200,
1253 .hw_value_short = 0x200, },
1254 { .bitrate = 360,
1255 .hw_value = 0x400,
1256 .hw_value_short = 0x400, },
1257 { .bitrate = 480,
1258 .hw_value = 0x800,
1259 .hw_value_short = 0x800, },
1260 { .bitrate = 540,
1261 .hw_value = 0x1000,
1262 .hw_value_short = 0x1000, },
1263 };
1264
1265 /* can't be const, mac80211 writes to this */
1266 static struct ieee80211_channel wl1251_channels[] = {
1267 { .hw_value = 1, .center_freq = 2412},
1268 { .hw_value = 2, .center_freq = 2417},
1269 { .hw_value = 3, .center_freq = 2422},
1270 { .hw_value = 4, .center_freq = 2427},
1271 { .hw_value = 5, .center_freq = 2432},
1272 { .hw_value = 6, .center_freq = 2437},
1273 { .hw_value = 7, .center_freq = 2442},
1274 { .hw_value = 8, .center_freq = 2447},
1275 { .hw_value = 9, .center_freq = 2452},
1276 { .hw_value = 10, .center_freq = 2457},
1277 { .hw_value = 11, .center_freq = 2462},
1278 { .hw_value = 12, .center_freq = 2467},
1279 { .hw_value = 13, .center_freq = 2472},
1280 };
1281
1282 static int wl1251_op_conf_tx(struct ieee80211_hw *hw, u16 queue,
1283 const struct ieee80211_tx_queue_params *params)
1284 {
1285 struct wl1251 *wl = hw->priv;
1286 int ret;
1287
1288 mutex_lock(&wl->mutex);
1289
1290 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1291
1292 ret = wl1251_ps_elp_wakeup(wl);
1293 if (ret < 0)
1294 goto out;
1295
1296 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1297 params->cw_min, params->cw_max,
1298 params->aifs, params->txop);
1299 if (ret < 0)
1300 goto out_sleep;
1301
1302 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1303 CHANNEL_TYPE_EDCF,
1304 wl1251_tx_get_queue(queue),
1305 WL1251_ACX_PS_SCHEME_LEGACY,
1306 WL1251_ACX_ACK_POLICY_LEGACY);
1307 if (ret < 0)
1308 goto out_sleep;
1309
1310 out_sleep:
1311 wl1251_ps_elp_sleep(wl);
1312
1313 out:
1314 mutex_unlock(&wl->mutex);
1315
1316 return ret;
1317 }
1318
1319 /* can't be const, mac80211 writes to this */
1320 static struct ieee80211_supported_band wl1251_band_2ghz = {
1321 .channels = wl1251_channels,
1322 .n_channels = ARRAY_SIZE(wl1251_channels),
1323 .bitrates = wl1251_rates,
1324 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1325 };
1326
1327 static const struct ieee80211_ops wl1251_ops = {
1328 .start = wl1251_op_start,
1329 .stop = wl1251_op_stop,
1330 .add_interface = wl1251_op_add_interface,
1331 .remove_interface = wl1251_op_remove_interface,
1332 .config = wl1251_op_config,
1333 .configure_filter = wl1251_op_configure_filter,
1334 .tx = wl1251_op_tx,
1335 .set_key = wl1251_op_set_key,
1336 .hw_scan = wl1251_op_hw_scan,
1337 .bss_info_changed = wl1251_op_bss_info_changed,
1338 .set_rts_threshold = wl1251_op_set_rts_threshold,
1339 .conf_tx = wl1251_op_conf_tx,
1340 };
1341
1342 static int wl1251_register_hw(struct wl1251 *wl)
1343 {
1344 int ret;
1345
1346 if (wl->mac80211_registered)
1347 return 0;
1348
1349 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1350
1351 ret = ieee80211_register_hw(wl->hw);
1352 if (ret < 0) {
1353 wl1251_error("unable to register mac80211 hw: %d", ret);
1354 return ret;
1355 }
1356
1357 wl->mac80211_registered = true;
1358
1359 wl1251_notice("loaded");
1360
1361 return 0;
1362 }
1363
1364 int wl1251_init_ieee80211(struct wl1251 *wl)
1365 {
1366 int ret;
1367
1368 /* The tx descriptor buffer and the TKIP space */
1369 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1370 + WL1251_TKIP_IV_SPACE;
1371
1372 /* unit us */
1373 /* FIXME: find a proper value */
1374 wl->hw->channel_change_time = 10000;
1375
1376 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1377 IEEE80211_HW_NOISE_DBM |
1378 IEEE80211_HW_SUPPORTS_PS |
1379 IEEE80211_HW_BEACON_FILTER;
1380
1381 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
1382 wl->hw->wiphy->max_scan_ssids = 1;
1383 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1384
1385 wl->hw->queues = 4;
1386
1387 ret = wl1251_register_hw(wl);
1388 if (ret)
1389 goto out;
1390
1391 wl1251_debugfs_init(wl);
1392 wl1251_notice("initialized");
1393
1394 ret = 0;
1395
1396 out:
1397 return ret;
1398 }
1399 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1400
1401 struct ieee80211_hw *wl1251_alloc_hw(void)
1402 {
1403 struct ieee80211_hw *hw;
1404 struct wl1251 *wl;
1405 int i;
1406 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1407
1408 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1409 if (!hw) {
1410 wl1251_error("could not alloc ieee80211_hw");
1411 return ERR_PTR(-ENOMEM);
1412 }
1413
1414 wl = hw->priv;
1415 memset(wl, 0, sizeof(*wl));
1416
1417 wl->hw = hw;
1418
1419 wl->data_in_count = 0;
1420
1421 skb_queue_head_init(&wl->tx_queue);
1422
1423 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1424 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1425 wl->channel = WL1251_DEFAULT_CHANNEL;
1426 wl->scanning = false;
1427 wl->default_key = 0;
1428 wl->listen_int = 1;
1429 wl->rx_counter = 0;
1430 wl->rx_handled = 0;
1431 wl->rx_current_buffer = 0;
1432 wl->rx_last_id = 0;
1433 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1434 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1435 wl->elp = false;
1436 wl->psm = 0;
1437 wl->psm_requested = false;
1438 wl->tx_queue_stopped = false;
1439 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1440 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1441 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1442 wl->vif = NULL;
1443
1444 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1445 wl->tx_frames[i] = NULL;
1446
1447 wl->next_tx_complete = 0;
1448
1449 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1450 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1451
1452 /*
1453 * In case our MAC address is not correctly set,
1454 * we use a random but Nokia MAC.
1455 */
1456 memcpy(wl->mac_addr, nokia_oui, 3);
1457 get_random_bytes(wl->mac_addr + 3, 3);
1458
1459 wl->state = WL1251_STATE_OFF;
1460 mutex_init(&wl->mutex);
1461
1462 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1463 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1464
1465 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1466 if (!wl->rx_descriptor) {
1467 wl1251_error("could not allocate memory for rx descriptor");
1468 ieee80211_free_hw(hw);
1469 return ERR_PTR(-ENOMEM);
1470 }
1471
1472 return hw;
1473 }
1474 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1475
1476 int wl1251_free_hw(struct wl1251 *wl)
1477 {
1478 ieee80211_unregister_hw(wl->hw);
1479
1480 wl1251_debugfs_exit(wl);
1481
1482 kfree(wl->target_mem_map);
1483 kfree(wl->data_path);
1484 vfree(wl->fw);
1485 wl->fw = NULL;
1486 kfree(wl->nvs);
1487 wl->nvs = NULL;
1488
1489 kfree(wl->rx_descriptor);
1490 wl->rx_descriptor = NULL;
1491
1492 ieee80211_free_hw(wl->hw);
1493
1494 return 0;
1495 }
1496 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1497
1498 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1499 MODULE_LICENSE("GPL");
1500 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
1501 MODULE_ALIAS("spi:wl1251");
1502 MODULE_FIRMWARE(WL1251_FW_NAME);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree