aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ti/wl1251/main.c
diff options
context:
space:
mode:
authorLuciano Coelho <coelho@ti.com>2011-11-20 14:40:41 -0500
committerLuciano Coelho <coelho@ti.com>2012-04-12 01:43:55 -0400
commit90921014608d91a03766d0025fa32662dc7c5062 (patch)
treeadba69dd7be20600cdec0cc856263dc2ca3bfdb1 /drivers/net/wireless/ti/wl1251/main.c
parent16f3eb530fb5e7eacbdaaf09c66edc273087a21d (diff)
wireless/wl12xx/wl1251: move TI WLAN modules to a common ti subdirectory
Move wl12xx and wl1251 modules into a new drivers/net/wireless/ti directory. Add a TI WLAN Kconfig option and Makefile to support this change. Signed-off-by: Luciano Coelho <coelho@ti.com> Cc: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ti/wl1251/main.c')
-rw-r--r--drivers/net/wireless/ti/wl1251/main.c1471
1 files changed, 1471 insertions, 0 deletions
diff --git a/drivers/net/wireless/ti/wl1251/main.c b/drivers/net/wireless/ti/wl1251/main.c
new file mode 100644
index 000000000000..41302c7b1ad0
--- /dev/null
+++ b/drivers/net/wireless/ti/wl1251/main.c
@@ -0,0 +1,1471 @@
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
45void wl1251_enable_interrupts(struct wl1251 *wl)
46{
47 wl->if_ops->enable_irq(wl);
48}
49
50void wl1251_disable_interrupts(struct wl1251 *wl)
51{
52 wl->if_ops->disable_irq(wl);
53}
54
55static int wl1251_power_off(struct wl1251 *wl)
56{
57 return wl->if_ops->power(wl, false);
58}
59
60static int wl1251_power_on(struct wl1251 *wl)
61{
62 return wl->if_ops->power(wl, true);
63}
64
65static 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
98out:
99 release_firmware(fw);
100
101 return ret;
102}
103
104static 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
135out:
136 release_firmware(fw);
137
138 return ret;
139}
140
141static 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
153static 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
211out:
212 return ret;
213}
214
215#define WL1251_IRQ_LOOP_COUNT 10
216static 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
317out_sleep:
318 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
319 wl1251_ps_elp_sleep(wl);
320
321out:
322 mutex_unlock(&wl->mutex);
323}
324
325static 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
347out:
348 return ret;
349}
350
351static 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
371out_sleep:
372 wl1251_ps_elp_sleep(wl);
373
374out:
375 mutex_unlock(&wl->mutex);
376}
377
378static 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
406static 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
447out:
448 if (ret < 0)
449 wl1251_power_off(wl);
450
451 mutex_unlock(&wl->mutex);
452
453 return ret;
454}
455
456static 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
483 mutex_lock(&wl->mutex);
484
485 /* let's notify MAC80211 about the remaining pending TX frames */
486 wl1251_tx_flush(wl);
487 wl1251_power_off(wl);
488
489 memset(wl->bssid, 0, ETH_ALEN);
490 wl->listen_int = 1;
491 wl->bss_type = MAX_BSS_TYPE;
492
493 wl->data_in_count = 0;
494 wl->rx_counter = 0;
495 wl->rx_handled = 0;
496 wl->rx_current_buffer = 0;
497 wl->rx_last_id = 0;
498 wl->next_tx_complete = 0;
499 wl->elp = false;
500 wl->station_mode = STATION_ACTIVE_MODE;
501 wl->tx_queue_stopped = false;
502 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
503 wl->rssi_thold = 0;
504 wl->channel = WL1251_DEFAULT_CHANNEL;
505
506 wl1251_debugfs_reset(wl);
507
508 mutex_unlock(&wl->mutex);
509}
510
511static int wl1251_op_add_interface(struct ieee80211_hw *hw,
512 struct ieee80211_vif *vif)
513{
514 struct wl1251 *wl = hw->priv;
515 int ret = 0;
516
517 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
518 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
519
520 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
521 vif->type, vif->addr);
522
523 mutex_lock(&wl->mutex);
524 if (wl->vif) {
525 ret = -EBUSY;
526 goto out;
527 }
528
529 wl->vif = vif;
530
531 switch (vif->type) {
532 case NL80211_IFTYPE_STATION:
533 wl->bss_type = BSS_TYPE_STA_BSS;
534 break;
535 case NL80211_IFTYPE_ADHOC:
536 wl->bss_type = BSS_TYPE_IBSS;
537 break;
538 default:
539 ret = -EOPNOTSUPP;
540 goto out;
541 }
542
543 if (memcmp(wl->mac_addr, vif->addr, ETH_ALEN)) {
544 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
545 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
546 ret = wl1251_acx_station_id(wl);
547 if (ret < 0)
548 goto out;
549 }
550
551out:
552 mutex_unlock(&wl->mutex);
553 return ret;
554}
555
556static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
557 struct ieee80211_vif *vif)
558{
559 struct wl1251 *wl = hw->priv;
560
561 mutex_lock(&wl->mutex);
562 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
563 wl->vif = NULL;
564 mutex_unlock(&wl->mutex);
565}
566
567static int wl1251_build_qos_null_data(struct wl1251 *wl)
568{
569 struct ieee80211_qos_hdr template;
570
571 memset(&template, 0, sizeof(template));
572
573 memcpy(template.addr1, wl->bssid, ETH_ALEN);
574 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
575 memcpy(template.addr3, wl->bssid, ETH_ALEN);
576
577 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
578 IEEE80211_STYPE_QOS_NULLFUNC |
579 IEEE80211_FCTL_TODS);
580
581 /* FIXME: not sure what priority to use here */
582 template.qos_ctrl = cpu_to_le16(0);
583
584 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
585 sizeof(template));
586}
587
588static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
589{
590 struct wl1251 *wl = hw->priv;
591 struct ieee80211_conf *conf = &hw->conf;
592 int channel, ret = 0;
593
594 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
595
596 wl1251_debug(DEBUG_MAC80211, "mac80211 config ch %d psm %s power %d",
597 channel,
598 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
599 conf->power_level);
600
601 mutex_lock(&wl->mutex);
602
603 ret = wl1251_ps_elp_wakeup(wl);
604 if (ret < 0)
605 goto out;
606
607 if (channel != wl->channel) {
608 wl->channel = channel;
609
610 ret = wl1251_join(wl, wl->bss_type, wl->channel,
611 wl->beacon_int, wl->dtim_period);
612 if (ret < 0)
613 goto out_sleep;
614 }
615
616 if (conf->flags & IEEE80211_CONF_PS && !wl->psm_requested) {
617 wl1251_debug(DEBUG_PSM, "psm enabled");
618
619 wl->psm_requested = true;
620
621 wl->dtim_period = conf->ps_dtim_period;
622
623 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
624 wl->dtim_period);
625
626 /*
627 * mac80211 enables PSM only if we're already associated.
628 */
629 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
630 if (ret < 0)
631 goto out_sleep;
632 } else if (!(conf->flags & IEEE80211_CONF_PS) &&
633 wl->psm_requested) {
634 wl1251_debug(DEBUG_PSM, "psm disabled");
635
636 wl->psm_requested = false;
637
638 if (wl->station_mode != STATION_ACTIVE_MODE) {
639 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
640 if (ret < 0)
641 goto out_sleep;
642 }
643 }
644
645 if (changed & IEEE80211_CONF_CHANGE_IDLE) {
646 if (conf->flags & IEEE80211_CONF_IDLE) {
647 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
648 if (ret < 0)
649 goto out_sleep;
650 } else {
651 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
652 if (ret < 0)
653 goto out_sleep;
654 ret = wl1251_join(wl, wl->bss_type, wl->channel,
655 wl->beacon_int, wl->dtim_period);
656 if (ret < 0)
657 goto out_sleep;
658 }
659 }
660
661 if (conf->power_level != wl->power_level) {
662 ret = wl1251_acx_tx_power(wl, conf->power_level);
663 if (ret < 0)
664 goto out_sleep;
665
666 wl->power_level = conf->power_level;
667 }
668
669out_sleep:
670 wl1251_ps_elp_sleep(wl);
671
672out:
673 mutex_unlock(&wl->mutex);
674
675 return ret;
676}
677
678#define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
679 FIF_ALLMULTI | \
680 FIF_FCSFAIL | \
681 FIF_BCN_PRBRESP_PROMISC | \
682 FIF_CONTROL | \
683 FIF_OTHER_BSS)
684
685static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
686 unsigned int changed,
687 unsigned int *total,u64 multicast)
688{
689 struct wl1251 *wl = hw->priv;
690
691 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
692
693 *total &= WL1251_SUPPORTED_FILTERS;
694 changed &= WL1251_SUPPORTED_FILTERS;
695
696 if (changed == 0)
697 /* no filters which we support changed */
698 return;
699
700 /* FIXME: wl->rx_config and wl->rx_filter are not protected */
701
702 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
703 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
704
705 if (*total & FIF_PROMISC_IN_BSS) {
706 wl->rx_config |= CFG_BSSID_FILTER_EN;
707 wl->rx_config |= CFG_RX_ALL_GOOD;
708 }
709 if (*total & FIF_ALLMULTI)
710 /*
711 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
712 * all multicast frames
713 */
714 wl->rx_config &= ~CFG_MC_FILTER_EN;
715 if (*total & FIF_FCSFAIL)
716 wl->rx_filter |= CFG_RX_FCS_ERROR;
717 if (*total & FIF_BCN_PRBRESP_PROMISC) {
718 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
719 wl->rx_config &= ~CFG_SSID_FILTER_EN;
720 }
721 if (*total & FIF_CONTROL)
722 wl->rx_filter |= CFG_RX_CTL_EN;
723 if (*total & FIF_OTHER_BSS)
724 wl->rx_filter &= ~CFG_BSSID_FILTER_EN;
725
726 /*
727 * FIXME: workqueues need to be properly cancelled on stop(), for
728 * now let's just disable changing the filter settings. They will
729 * be updated any on config().
730 */
731 /* schedule_work(&wl->filter_work); */
732}
733
734/* HW encryption */
735static int wl1251_set_key_type(struct wl1251 *wl,
736 struct wl1251_cmd_set_keys *key,
737 enum set_key_cmd cmd,
738 struct ieee80211_key_conf *mac80211_key,
739 const u8 *addr)
740{
741 switch (mac80211_key->cipher) {
742 case WLAN_CIPHER_SUITE_WEP40:
743 case WLAN_CIPHER_SUITE_WEP104:
744 if (is_broadcast_ether_addr(addr))
745 key->key_type = KEY_WEP_DEFAULT;
746 else
747 key->key_type = KEY_WEP_ADDR;
748
749 mac80211_key->hw_key_idx = mac80211_key->keyidx;
750 break;
751 case WLAN_CIPHER_SUITE_TKIP:
752 if (is_broadcast_ether_addr(addr))
753 key->key_type = KEY_TKIP_MIC_GROUP;
754 else
755 key->key_type = KEY_TKIP_MIC_PAIRWISE;
756
757 mac80211_key->hw_key_idx = mac80211_key->keyidx;
758 break;
759 case WLAN_CIPHER_SUITE_CCMP:
760 if (is_broadcast_ether_addr(addr))
761 key->key_type = KEY_AES_GROUP;
762 else
763 key->key_type = KEY_AES_PAIRWISE;
764 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
765 break;
766 default:
767 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
768 return -EOPNOTSUPP;
769 }
770
771 return 0;
772}
773
774static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
775 struct ieee80211_vif *vif,
776 struct ieee80211_sta *sta,
777 struct ieee80211_key_conf *key)
778{
779 struct wl1251 *wl = hw->priv;
780 struct wl1251_cmd_set_keys *wl_cmd;
781 const u8 *addr;
782 int ret;
783
784 static const u8 bcast_addr[ETH_ALEN] =
785 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
786
787 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
788
789 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
790 if (!wl_cmd) {
791 ret = -ENOMEM;
792 goto out;
793 }
794
795 addr = sta ? sta->addr : bcast_addr;
796
797 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
798 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
799 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
800 key->cipher, key->keyidx, key->keylen, key->flags);
801 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
802
803 if (is_zero_ether_addr(addr)) {
804 /* We dont support TX only encryption */
805 ret = -EOPNOTSUPP;
806 goto out;
807 }
808
809 mutex_lock(&wl->mutex);
810
811 ret = wl1251_ps_elp_wakeup(wl);
812 if (ret < 0)
813 goto out_unlock;
814
815 switch (cmd) {
816 case SET_KEY:
817 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
818 break;
819 case DISABLE_KEY:
820 wl_cmd->key_action = KEY_REMOVE;
821 break;
822 default:
823 wl1251_error("Unsupported key cmd 0x%x", cmd);
824 break;
825 }
826
827 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
828 if (ret < 0) {
829 wl1251_error("Set KEY type failed");
830 goto out_sleep;
831 }
832
833 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
834 memcpy(wl_cmd->addr, addr, ETH_ALEN);
835
836 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
837 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
838 /*
839 * We get the key in the following form:
840 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
841 * but the target is expecting:
842 * TKIP - RX MIC - TX MIC
843 */
844 memcpy(wl_cmd->key, key->key, 16);
845 memcpy(wl_cmd->key + 16, key->key + 24, 8);
846 memcpy(wl_cmd->key + 24, key->key + 16, 8);
847
848 } else {
849 memcpy(wl_cmd->key, key->key, key->keylen);
850 }
851 wl_cmd->key_size = key->keylen;
852
853 wl_cmd->id = key->keyidx;
854 wl_cmd->ssid_profile = 0;
855
856 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
857
858 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
859 if (ret < 0) {
860 wl1251_warning("could not set keys");
861 goto out_sleep;
862 }
863
864out_sleep:
865 wl1251_ps_elp_sleep(wl);
866
867out_unlock:
868 mutex_unlock(&wl->mutex);
869
870out:
871 kfree(wl_cmd);
872
873 return ret;
874}
875
876static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
877 struct ieee80211_vif *vif,
878 struct cfg80211_scan_request *req)
879{
880 struct wl1251 *wl = hw->priv;
881 struct sk_buff *skb;
882 size_t ssid_len = 0;
883 u8 *ssid = NULL;
884 int ret;
885
886 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
887
888 if (req->n_ssids) {
889 ssid = req->ssids[0].ssid;
890 ssid_len = req->ssids[0].ssid_len;
891 }
892
893 mutex_lock(&wl->mutex);
894
895 if (wl->scanning) {
896 wl1251_debug(DEBUG_SCAN, "scan already in progress");
897 ret = -EINVAL;
898 goto out;
899 }
900
901 ret = wl1251_ps_elp_wakeup(wl);
902 if (ret < 0)
903 goto out;
904
905 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
906 req->ie, req->ie_len);
907 if (!skb) {
908 ret = -ENOMEM;
909 goto out;
910 }
911
912 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
913 skb->len);
914 dev_kfree_skb(skb);
915 if (ret < 0)
916 goto out_sleep;
917
918 ret = wl1251_cmd_trigger_scan_to(wl, 0);
919 if (ret < 0)
920 goto out_sleep;
921
922 wl->scanning = true;
923
924 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
925 req->n_channels, WL1251_SCAN_NUM_PROBES);
926 if (ret < 0) {
927 wl->scanning = false;
928 goto out_sleep;
929 }
930
931out_sleep:
932 wl1251_ps_elp_sleep(wl);
933
934out:
935 mutex_unlock(&wl->mutex);
936
937 return ret;
938}
939
940static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
941{
942 struct wl1251 *wl = hw->priv;
943 int ret;
944
945 mutex_lock(&wl->mutex);
946
947 ret = wl1251_ps_elp_wakeup(wl);
948 if (ret < 0)
949 goto out;
950
951 ret = wl1251_acx_rts_threshold(wl, (u16) value);
952 if (ret < 0)
953 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
954
955 wl1251_ps_elp_sleep(wl);
956
957out:
958 mutex_unlock(&wl->mutex);
959
960 return ret;
961}
962
963static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
964 struct ieee80211_vif *vif,
965 struct ieee80211_bss_conf *bss_conf,
966 u32 changed)
967{
968 struct wl1251 *wl = hw->priv;
969 struct sk_buff *beacon, *skb;
970 int ret;
971
972 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
973
974 mutex_lock(&wl->mutex);
975
976 ret = wl1251_ps_elp_wakeup(wl);
977 if (ret < 0)
978 goto out;
979
980 if (changed & BSS_CHANGED_CQM) {
981 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
982 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
983 WL1251_DEFAULT_LOW_RSSI_DEPTH,
984 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
985 if (ret < 0)
986 goto out;
987 wl->rssi_thold = bss_conf->cqm_rssi_thold;
988 }
989
990 if (changed & BSS_CHANGED_BSSID) {
991 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
992
993 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
994 if (!skb)
995 goto out_sleep;
996
997 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
998 skb->data, skb->len);
999 dev_kfree_skb(skb);
1000 if (ret < 0)
1001 goto out_sleep;
1002
1003 ret = wl1251_build_qos_null_data(wl);
1004 if (ret < 0)
1005 goto out;
1006
1007 if (wl->bss_type != BSS_TYPE_IBSS) {
1008 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1009 wl->beacon_int, wl->dtim_period);
1010 if (ret < 0)
1011 goto out_sleep;
1012 }
1013 }
1014
1015 if (changed & BSS_CHANGED_ASSOC) {
1016 if (bss_conf->assoc) {
1017 wl->beacon_int = bss_conf->beacon_int;
1018
1019 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1020 if (!skb)
1021 goto out_sleep;
1022
1023 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1024 skb->data,
1025 skb->len);
1026 dev_kfree_skb(skb);
1027 if (ret < 0)
1028 goto out_sleep;
1029
1030 ret = wl1251_acx_aid(wl, bss_conf->aid);
1031 if (ret < 0)
1032 goto out_sleep;
1033 } else {
1034 /* use defaults when not associated */
1035 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1036 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1037 }
1038 }
1039 if (changed & BSS_CHANGED_ERP_SLOT) {
1040 if (bss_conf->use_short_slot)
1041 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1042 else
1043 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1044 if (ret < 0) {
1045 wl1251_warning("Set slot time failed %d", ret);
1046 goto out_sleep;
1047 }
1048 }
1049
1050 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1051 if (bss_conf->use_short_preamble)
1052 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1053 else
1054 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1055 }
1056
1057 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1058 if (bss_conf->use_cts_prot)
1059 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1060 else
1061 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1062 if (ret < 0) {
1063 wl1251_warning("Set ctsprotect failed %d", ret);
1064 goto out_sleep;
1065 }
1066 }
1067
1068 if (changed & BSS_CHANGED_BEACON) {
1069 beacon = ieee80211_beacon_get(hw, vif);
1070 if (!beacon)
1071 goto out_sleep;
1072
1073 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1074 beacon->len);
1075
1076 if (ret < 0) {
1077 dev_kfree_skb(beacon);
1078 goto out_sleep;
1079 }
1080
1081 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1082 beacon->len);
1083
1084 dev_kfree_skb(beacon);
1085
1086 if (ret < 0)
1087 goto out_sleep;
1088
1089 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1090 wl->channel, wl->dtim_period);
1091
1092 if (ret < 0)
1093 goto out_sleep;
1094 }
1095
1096out_sleep:
1097 wl1251_ps_elp_sleep(wl);
1098
1099out:
1100 mutex_unlock(&wl->mutex);
1101}
1102
1103
1104/* can't be const, mac80211 writes to this */
1105static struct ieee80211_rate wl1251_rates[] = {
1106 { .bitrate = 10,
1107 .hw_value = 0x1,
1108 .hw_value_short = 0x1, },
1109 { .bitrate = 20,
1110 .hw_value = 0x2,
1111 .hw_value_short = 0x2,
1112 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1113 { .bitrate = 55,
1114 .hw_value = 0x4,
1115 .hw_value_short = 0x4,
1116 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1117 { .bitrate = 110,
1118 .hw_value = 0x20,
1119 .hw_value_short = 0x20,
1120 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1121 { .bitrate = 60,
1122 .hw_value = 0x8,
1123 .hw_value_short = 0x8, },
1124 { .bitrate = 90,
1125 .hw_value = 0x10,
1126 .hw_value_short = 0x10, },
1127 { .bitrate = 120,
1128 .hw_value = 0x40,
1129 .hw_value_short = 0x40, },
1130 { .bitrate = 180,
1131 .hw_value = 0x80,
1132 .hw_value_short = 0x80, },
1133 { .bitrate = 240,
1134 .hw_value = 0x200,
1135 .hw_value_short = 0x200, },
1136 { .bitrate = 360,
1137 .hw_value = 0x400,
1138 .hw_value_short = 0x400, },
1139 { .bitrate = 480,
1140 .hw_value = 0x800,
1141 .hw_value_short = 0x800, },
1142 { .bitrate = 540,
1143 .hw_value = 0x1000,
1144 .hw_value_short = 0x1000, },
1145};
1146
1147/* can't be const, mac80211 writes to this */
1148static struct ieee80211_channel wl1251_channels[] = {
1149 { .hw_value = 1, .center_freq = 2412},
1150 { .hw_value = 2, .center_freq = 2417},
1151 { .hw_value = 3, .center_freq = 2422},
1152 { .hw_value = 4, .center_freq = 2427},
1153 { .hw_value = 5, .center_freq = 2432},
1154 { .hw_value = 6, .center_freq = 2437},
1155 { .hw_value = 7, .center_freq = 2442},
1156 { .hw_value = 8, .center_freq = 2447},
1157 { .hw_value = 9, .center_freq = 2452},
1158 { .hw_value = 10, .center_freq = 2457},
1159 { .hw_value = 11, .center_freq = 2462},
1160 { .hw_value = 12, .center_freq = 2467},
1161 { .hw_value = 13, .center_freq = 2472},
1162};
1163
1164static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1165 struct ieee80211_vif *vif, u16 queue,
1166 const struct ieee80211_tx_queue_params *params)
1167{
1168 enum wl1251_acx_ps_scheme ps_scheme;
1169 struct wl1251 *wl = hw->priv;
1170 int ret;
1171
1172 mutex_lock(&wl->mutex);
1173
1174 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1175
1176 ret = wl1251_ps_elp_wakeup(wl);
1177 if (ret < 0)
1178 goto out;
1179
1180 /* mac80211 uses units of 32 usec */
1181 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1182 params->cw_min, params->cw_max,
1183 params->aifs, params->txop * 32);
1184 if (ret < 0)
1185 goto out_sleep;
1186
1187 if (params->uapsd)
1188 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1189 else
1190 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1191
1192 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1193 CHANNEL_TYPE_EDCF,
1194 wl1251_tx_get_queue(queue), ps_scheme,
1195 WL1251_ACX_ACK_POLICY_LEGACY);
1196 if (ret < 0)
1197 goto out_sleep;
1198
1199out_sleep:
1200 wl1251_ps_elp_sleep(wl);
1201
1202out:
1203 mutex_unlock(&wl->mutex);
1204
1205 return ret;
1206}
1207
1208static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1209 struct survey_info *survey)
1210{
1211 struct wl1251 *wl = hw->priv;
1212 struct ieee80211_conf *conf = &hw->conf;
1213
1214 if (idx != 0)
1215 return -ENOENT;
1216
1217 survey->channel = conf->channel;
1218 survey->filled = SURVEY_INFO_NOISE_DBM;
1219 survey->noise = wl->noise;
1220
1221 return 0;
1222}
1223
1224/* can't be const, mac80211 writes to this */
1225static struct ieee80211_supported_band wl1251_band_2ghz = {
1226 .channels = wl1251_channels,
1227 .n_channels = ARRAY_SIZE(wl1251_channels),
1228 .bitrates = wl1251_rates,
1229 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1230};
1231
1232static const struct ieee80211_ops wl1251_ops = {
1233 .start = wl1251_op_start,
1234 .stop = wl1251_op_stop,
1235 .add_interface = wl1251_op_add_interface,
1236 .remove_interface = wl1251_op_remove_interface,
1237 .config = wl1251_op_config,
1238 .configure_filter = wl1251_op_configure_filter,
1239 .tx = wl1251_op_tx,
1240 .set_key = wl1251_op_set_key,
1241 .hw_scan = wl1251_op_hw_scan,
1242 .bss_info_changed = wl1251_op_bss_info_changed,
1243 .set_rts_threshold = wl1251_op_set_rts_threshold,
1244 .conf_tx = wl1251_op_conf_tx,
1245 .get_survey = wl1251_op_get_survey,
1246};
1247
1248static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1249{
1250 unsigned long timeout;
1251
1252 wl1251_reg_write32(wl, EE_ADDR, offset);
1253 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1254
1255 /* EE_CTL_READ clears when data is ready */
1256 timeout = jiffies + msecs_to_jiffies(100);
1257 while (1) {
1258 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1259 break;
1260
1261 if (time_after(jiffies, timeout))
1262 return -ETIMEDOUT;
1263
1264 msleep(1);
1265 }
1266
1267 *data = wl1251_reg_read32(wl, EE_DATA);
1268 return 0;
1269}
1270
1271static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1272 u8 *data, size_t len)
1273{
1274 size_t i;
1275 int ret;
1276
1277 wl1251_reg_write32(wl, EE_START, 0);
1278
1279 for (i = 0; i < len; i++) {
1280 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1281 if (ret < 0)
1282 return ret;
1283 }
1284
1285 return 0;
1286}
1287
1288static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1289{
1290 u8 mac[ETH_ALEN];
1291 int i, ret;
1292
1293 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1294
1295 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1296 if (ret < 0) {
1297 wl1251_warning("failed to read MAC address from EEPROM");
1298 return ret;
1299 }
1300
1301 /* MAC is stored in reverse order */
1302 for (i = 0; i < ETH_ALEN; i++)
1303 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1304
1305 return 0;
1306}
1307
1308static int wl1251_register_hw(struct wl1251 *wl)
1309{
1310 int ret;
1311
1312 if (wl->mac80211_registered)
1313 return 0;
1314
1315 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1316
1317 ret = ieee80211_register_hw(wl->hw);
1318 if (ret < 0) {
1319 wl1251_error("unable to register mac80211 hw: %d", ret);
1320 return ret;
1321 }
1322
1323 wl->mac80211_registered = true;
1324
1325 wl1251_notice("loaded");
1326
1327 return 0;
1328}
1329
1330int wl1251_init_ieee80211(struct wl1251 *wl)
1331{
1332 int ret;
1333
1334 /* The tx descriptor buffer and the TKIP space */
1335 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1336 + WL1251_TKIP_IV_SPACE;
1337
1338 /* unit us */
1339 /* FIXME: find a proper value */
1340 wl->hw->channel_change_time = 10000;
1341
1342 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1343 IEEE80211_HW_SUPPORTS_PS |
1344 IEEE80211_HW_SUPPORTS_UAPSD;
1345
1346 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1347 BIT(NL80211_IFTYPE_ADHOC);
1348 wl->hw->wiphy->max_scan_ssids = 1;
1349 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1350
1351 wl->hw->queues = 4;
1352
1353 if (wl->use_eeprom)
1354 wl1251_read_eeprom_mac(wl);
1355
1356 ret = wl1251_register_hw(wl);
1357 if (ret)
1358 goto out;
1359
1360 wl1251_debugfs_init(wl);
1361 wl1251_notice("initialized");
1362
1363 ret = 0;
1364
1365out:
1366 return ret;
1367}
1368EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1369
1370struct ieee80211_hw *wl1251_alloc_hw(void)
1371{
1372 struct ieee80211_hw *hw;
1373 struct wl1251 *wl;
1374 int i;
1375 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1376
1377 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1378 if (!hw) {
1379 wl1251_error("could not alloc ieee80211_hw");
1380 return ERR_PTR(-ENOMEM);
1381 }
1382
1383 wl = hw->priv;
1384 memset(wl, 0, sizeof(*wl));
1385
1386 wl->hw = hw;
1387
1388 wl->data_in_count = 0;
1389
1390 skb_queue_head_init(&wl->tx_queue);
1391
1392 INIT_WORK(&wl->filter_work, wl1251_filter_work);
1393 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1394 wl->channel = WL1251_DEFAULT_CHANNEL;
1395 wl->scanning = false;
1396 wl->default_key = 0;
1397 wl->listen_int = 1;
1398 wl->rx_counter = 0;
1399 wl->rx_handled = 0;
1400 wl->rx_current_buffer = 0;
1401 wl->rx_last_id = 0;
1402 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1403 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1404 wl->elp = false;
1405 wl->station_mode = STATION_ACTIVE_MODE;
1406 wl->psm_requested = false;
1407 wl->tx_queue_stopped = false;
1408 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1409 wl->rssi_thold = 0;
1410 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1411 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1412 wl->vif = NULL;
1413
1414 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1415 wl->tx_frames[i] = NULL;
1416
1417 wl->next_tx_complete = 0;
1418
1419 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1420 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1421
1422 /*
1423 * In case our MAC address is not correctly set,
1424 * we use a random but Nokia MAC.
1425 */
1426 memcpy(wl->mac_addr, nokia_oui, 3);
1427 get_random_bytes(wl->mac_addr + 3, 3);
1428
1429 wl->state = WL1251_STATE_OFF;
1430 mutex_init(&wl->mutex);
1431
1432 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1433 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1434
1435 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1436 if (!wl->rx_descriptor) {
1437 wl1251_error("could not allocate memory for rx descriptor");
1438 ieee80211_free_hw(hw);
1439 return ERR_PTR(-ENOMEM);
1440 }
1441
1442 return hw;
1443}
1444EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1445
1446int wl1251_free_hw(struct wl1251 *wl)
1447{
1448 ieee80211_unregister_hw(wl->hw);
1449
1450 wl1251_debugfs_exit(wl);
1451
1452 kfree(wl->target_mem_map);
1453 kfree(wl->data_path);
1454 vfree(wl->fw);
1455 wl->fw = NULL;
1456 kfree(wl->nvs);
1457 wl->nvs = NULL;
1458
1459 kfree(wl->rx_descriptor);
1460 wl->rx_descriptor = NULL;
1461
1462 ieee80211_free_hw(wl->hw);
1463
1464 return 0;
1465}
1466EXPORT_SYMBOL_GPL(wl1251_free_hw);
1467
1468MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1469MODULE_LICENSE("GPL");
1470MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1471MODULE_FIRMWARE(WL1251_FW_NAME);
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-27 12:32:10 -0500