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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[mirror_ubuntu-hirsute-kernel.git] / drivers / net / wireless / ti / wl1251 / main.c
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 #include <linux/netdevice.h>
32
33 #include "wl1251.h"
34 #include "wl12xx_80211.h"
35 #include "reg.h"
36 #include "io.h"
37 #include "cmd.h"
38 #include "event.h"
39 #include "tx.h"
40 #include "rx.h"
41 #include "ps.h"
42 #include "init.h"
43 #include "debugfs.h"
44 #include "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 int wl1251_power_off(struct wl1251 *wl)
57 {
58 return wl->if_ops->power(wl, false);
59 }
60
61 static int wl1251_power_on(struct wl1251 *wl)
62 {
63 return wl->if_ops->power(wl, 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 = kmemdup(fw->data, 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 ret = 0;
135
136 out:
137 release_firmware(fw);
138
139 return ret;
140 }
141
142 static void wl1251_fw_wakeup(struct wl1251 *wl)
143 {
144 u32 elp_reg;
145
146 elp_reg = ELPCTRL_WAKE_UP;
147 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
148 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
149
150 if (!(elp_reg & ELPCTRL_WLAN_READY))
151 wl1251_warning("WLAN not ready");
152 }
153
154 static int wl1251_chip_wakeup(struct wl1251 *wl)
155 {
156 int ret;
157
158 ret = wl1251_power_on(wl);
159 if (ret < 0)
160 return ret;
161
162 msleep(WL1251_POWER_ON_SLEEP);
163 wl->if_ops->reset(wl);
164
165 /* We don't need a real memory partition here, because we only want
166 * to use the registers at this point. */
167 wl1251_set_partition(wl,
168 0x00000000,
169 0x00000000,
170 REGISTERS_BASE,
171 REGISTERS_DOWN_SIZE);
172
173 /* ELP module wake up */
174 wl1251_fw_wakeup(wl);
175
176 /* whal_FwCtrl_BootSm() */
177
178 /* 0. read chip id from CHIP_ID */
179 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
180
181 /* 1. check if chip id is valid */
182
183 switch (wl->chip_id) {
184 case CHIP_ID_1251_PG12:
185 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
186 wl->chip_id);
187 break;
188 case CHIP_ID_1251_PG11:
189 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
190 wl->chip_id);
191 break;
192 case CHIP_ID_1251_PG10:
193 default:
194 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
195 ret = -ENODEV;
196 goto out;
197 }
198
199 if (wl->fw == NULL) {
200 ret = wl1251_fetch_firmware(wl);
201 if (ret < 0)
202 goto out;
203 }
204
205 if (wl->nvs == NULL && !wl->use_eeprom) {
206 /* No NVS from netlink, try to get it from the filesystem */
207 ret = wl1251_fetch_nvs(wl);
208 if (ret < 0)
209 goto out;
210 }
211
212 out:
213 return ret;
214 }
215
216 #define WL1251_IRQ_LOOP_COUNT 10
217 static void wl1251_irq_work(struct work_struct *work)
218 {
219 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
220 struct wl1251 *wl =
221 container_of(work, struct wl1251, irq_work);
222 int ret;
223
224 mutex_lock(&wl->mutex);
225
226 wl1251_debug(DEBUG_IRQ, "IRQ work");
227
228 if (wl->state == WL1251_STATE_OFF)
229 goto out;
230
231 ret = wl1251_ps_elp_wakeup(wl);
232 if (ret < 0)
233 goto out;
234
235 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
236
237 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
238 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
239
240 do {
241 if (wl->data_path) {
242 wl->rx_counter = wl1251_mem_read32(
243 wl, wl->data_path->rx_control_addr);
244
245 /* We handle a frmware bug here */
246 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
247 case 0:
248 wl1251_debug(DEBUG_IRQ,
249 "RX: FW and host in sync");
250 intr &= ~WL1251_ACX_INTR_RX0_DATA;
251 intr &= ~WL1251_ACX_INTR_RX1_DATA;
252 break;
253 case 1:
254 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
255 intr |= WL1251_ACX_INTR_RX0_DATA;
256 intr &= ~WL1251_ACX_INTR_RX1_DATA;
257 break;
258 case 2:
259 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
260 intr |= WL1251_ACX_INTR_RX0_DATA;
261 intr |= WL1251_ACX_INTR_RX1_DATA;
262 break;
263 default:
264 wl1251_warning(
265 "RX: FW and host out of sync: %d",
266 wl->rx_counter - wl->rx_handled);
267 break;
268 }
269
270 wl->rx_handled = wl->rx_counter;
271
272 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
273 wl->rx_counter);
274 }
275
276 intr &= wl->intr_mask;
277
278 if (intr == 0) {
279 wl1251_debug(DEBUG_IRQ, "INTR is 0");
280 goto out_sleep;
281 }
282
283 if (intr & WL1251_ACX_INTR_RX0_DATA) {
284 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
285 wl1251_rx(wl);
286 }
287
288 if (intr & WL1251_ACX_INTR_RX1_DATA) {
289 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
290 wl1251_rx(wl);
291 }
292
293 if (intr & WL1251_ACX_INTR_TX_RESULT) {
294 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
295 wl1251_tx_complete(wl);
296 }
297
298 if (intr & WL1251_ACX_INTR_EVENT_A) {
299 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
300 wl1251_event_handle(wl, 0);
301 }
302
303 if (intr & WL1251_ACX_INTR_EVENT_B) {
304 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
305 wl1251_event_handle(wl, 1);
306 }
307
308 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
309 wl1251_debug(DEBUG_IRQ,
310 "WL1251_ACX_INTR_INIT_COMPLETE");
311
312 if (--ctr == 0)
313 break;
314
315 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
316 } while (intr);
317
318 out_sleep:
319 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
320 wl1251_ps_elp_sleep(wl);
321
322 out:
323 mutex_unlock(&wl->mutex);
324 }
325
326 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
327 u16 beacon_interval, u8 dtim_period)
328 {
329 int ret;
330
331 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
332 DEFAULT_HW_GEN_MODULATION_TYPE,
333 wl->tx_mgmt_frm_rate,
334 wl->tx_mgmt_frm_mod);
335 if (ret < 0)
336 goto out;
337
338 /*
339 * Join command applies filters, and if we are not associated,
340 * BSSID filter must be disabled for association to work.
341 */
342 if (is_zero_ether_addr(wl->bssid))
343 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
344
345 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
346 dtim_period);
347 if (ret < 0)
348 goto out;
349
350 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
351 if (ret < 0)
352 wl1251_warning("join timeout");
353
354 out:
355 return ret;
356 }
357
358 static void wl1251_op_tx(struct ieee80211_hw *hw,
359 struct ieee80211_tx_control *control,
360 struct sk_buff *skb)
361 {
362 struct wl1251 *wl = hw->priv;
363 unsigned long flags;
364
365 skb_queue_tail(&wl->tx_queue, skb);
366
367 /*
368 * The chip specific setup must run before the first TX packet -
369 * before that, the tx_work will not be initialized!
370 */
371
372 ieee80211_queue_work(wl->hw, &wl->tx_work);
373
374 /*
375 * The workqueue is slow to process the tx_queue and we need stop
376 * the queue here, otherwise the queue will get too long.
377 */
378 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
379 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
380
381 spin_lock_irqsave(&wl->wl_lock, flags);
382 ieee80211_stop_queues(wl->hw);
383 wl->tx_queue_stopped = true;
384 spin_unlock_irqrestore(&wl->wl_lock, flags);
385 }
386 }
387
388 static int wl1251_op_start(struct ieee80211_hw *hw)
389 {
390 struct wl1251 *wl = hw->priv;
391 struct wiphy *wiphy = hw->wiphy;
392 int ret = 0;
393
394 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
395
396 mutex_lock(&wl->mutex);
397
398 if (wl->state != WL1251_STATE_OFF) {
399 wl1251_error("cannot start because not in off state: %d",
400 wl->state);
401 ret = -EBUSY;
402 goto out;
403 }
404
405 ret = wl1251_chip_wakeup(wl);
406 if (ret < 0)
407 goto out;
408
409 ret = wl1251_boot(wl);
410 if (ret < 0)
411 goto out;
412
413 ret = wl1251_hw_init(wl);
414 if (ret < 0)
415 goto out;
416
417 ret = wl1251_acx_station_id(wl);
418 if (ret < 0)
419 goto out;
420
421 wl->state = WL1251_STATE_ON;
422
423 wl1251_info("firmware booted (%s)", wl->fw_ver);
424
425 /* update hw/fw version info in wiphy struct */
426 wiphy->hw_version = wl->chip_id;
427 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
428
429 out:
430 if (ret < 0)
431 wl1251_power_off(wl);
432
433 mutex_unlock(&wl->mutex);
434
435 return ret;
436 }
437
438 static void wl1251_op_stop(struct ieee80211_hw *hw)
439 {
440 struct wl1251 *wl = hw->priv;
441
442 wl1251_info("down");
443
444 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
445
446 mutex_lock(&wl->mutex);
447
448 WARN_ON(wl->state != WL1251_STATE_ON);
449
450 if (wl->scanning) {
451 ieee80211_scan_completed(wl->hw, true);
452 wl->scanning = false;
453 }
454
455 wl->state = WL1251_STATE_OFF;
456
457 wl1251_disable_interrupts(wl);
458
459 mutex_unlock(&wl->mutex);
460
461 cancel_work_sync(&wl->irq_work);
462 cancel_work_sync(&wl->tx_work);
463 cancel_delayed_work_sync(&wl->elp_work);
464
465 mutex_lock(&wl->mutex);
466
467 /* let's notify MAC80211 about the remaining pending TX frames */
468 wl1251_tx_flush(wl);
469 wl1251_power_off(wl);
470
471 eth_zero_addr(wl->bssid);
472 wl->listen_int = 1;
473 wl->bss_type = MAX_BSS_TYPE;
474
475 wl->data_in_count = 0;
476 wl->rx_counter = 0;
477 wl->rx_handled = 0;
478 wl->rx_current_buffer = 0;
479 wl->rx_last_id = 0;
480 wl->next_tx_complete = 0;
481 wl->elp = false;
482 wl->station_mode = STATION_ACTIVE_MODE;
483 wl->psm_entry_retry = 0;
484 wl->tx_queue_stopped = false;
485 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
486 wl->rssi_thold = 0;
487 wl->channel = WL1251_DEFAULT_CHANNEL;
488 wl->monitor_present = false;
489 wl->joined = false;
490
491 wl1251_debugfs_reset(wl);
492
493 mutex_unlock(&wl->mutex);
494 }
495
496 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
497 struct ieee80211_vif *vif)
498 {
499 struct wl1251 *wl = hw->priv;
500 int ret = 0;
501
502 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
503 IEEE80211_VIF_SUPPORTS_UAPSD |
504 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
505
506 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
507 vif->type, vif->addr);
508
509 mutex_lock(&wl->mutex);
510 if (wl->vif) {
511 ret = -EBUSY;
512 goto out;
513 }
514
515 wl->vif = vif;
516
517 switch (vif->type) {
518 case NL80211_IFTYPE_STATION:
519 wl->bss_type = BSS_TYPE_STA_BSS;
520 break;
521 case NL80211_IFTYPE_ADHOC:
522 wl->bss_type = BSS_TYPE_IBSS;
523 break;
524 default:
525 ret = -EOPNOTSUPP;
526 goto out;
527 }
528
529 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) {
530 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
531 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
532 ret = wl1251_acx_station_id(wl);
533 if (ret < 0)
534 goto out;
535 }
536
537 out:
538 mutex_unlock(&wl->mutex);
539 return ret;
540 }
541
542 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
543 struct ieee80211_vif *vif)
544 {
545 struct wl1251 *wl = hw->priv;
546
547 mutex_lock(&wl->mutex);
548 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
549 wl->vif = NULL;
550 eth_zero_addr(wl->bssid);
551 mutex_unlock(&wl->mutex);
552 }
553
554 static int wl1251_build_null_data(struct wl1251 *wl)
555 {
556 struct sk_buff *skb = NULL;
557 int size;
558 void *ptr;
559 int ret = -ENOMEM;
560
561 if (wl->bss_type == BSS_TYPE_IBSS) {
562 size = sizeof(struct wl12xx_null_data_template);
563 ptr = NULL;
564 } else {
565 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
566 if (!skb)
567 goto out;
568 size = skb->len;
569 ptr = skb->data;
570 }
571
572 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size);
573
574 out:
575 dev_kfree_skb(skb);
576 if (ret)
577 wl1251_warning("cmd buld null data failed: %d", ret);
578
579 return ret;
580 }
581
582 static int wl1251_build_qos_null_data(struct wl1251 *wl)
583 {
584 struct ieee80211_qos_hdr template;
585
586 memset(&template, 0, sizeof(template));
587
588 memcpy(template.addr1, wl->bssid, ETH_ALEN);
589 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
590 memcpy(template.addr3, wl->bssid, ETH_ALEN);
591
592 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
593 IEEE80211_STYPE_QOS_NULLFUNC |
594 IEEE80211_FCTL_TODS);
595
596 /* FIXME: not sure what priority to use here */
597 template.qos_ctrl = cpu_to_le16(0);
598
599 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
600 sizeof(template));
601 }
602
603 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl)
604 {
605 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present;
606 }
607
608 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
609 {
610 struct wl1251 *wl = hw->priv;
611 struct ieee80211_conf *conf = &hw->conf;
612 int channel, ret = 0;
613
614 channel = ieee80211_frequency_to_channel(
615 conf->chandef.chan->center_freq);
616
617 wl1251_debug(DEBUG_MAC80211,
618 "mac80211 config ch %d monitor %s psm %s power %d",
619 channel,
620 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off",
621 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
622 conf->power_level);
623
624 mutex_lock(&wl->mutex);
625
626 ret = wl1251_ps_elp_wakeup(wl);
627 if (ret < 0)
628 goto out;
629
630 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
631 u32 mode;
632
633 if (conf->flags & IEEE80211_CONF_MONITOR) {
634 wl->monitor_present = true;
635 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE;
636 } else {
637 wl->monitor_present = false;
638 mode = 0;
639 }
640
641 ret = wl1251_acx_feature_cfg(wl, mode);
642 if (ret < 0)
643 goto out_sleep;
644 }
645
646 if (channel != wl->channel) {
647 wl->channel = channel;
648
649 /*
650 * Use ENABLE_RX command for channel switching when no
651 * interface is present (monitor mode only).
652 * This leaves the tx path disabled in firmware, whereas
653 * the usual JOIN command seems to transmit some frames
654 * at firmware level.
655 */
656 if (wl->vif == NULL) {
657 wl->joined = false;
658 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
659 } else {
660 ret = wl1251_join(wl, wl->bss_type, wl->channel,
661 wl->beacon_int, wl->dtim_period);
662 }
663 if (ret < 0)
664 goto out_sleep;
665 }
666
667 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) {
668 wl1251_debug(DEBUG_PSM, "psm enabled");
669
670 wl->psm_requested = true;
671
672 wl->dtim_period = conf->ps_dtim_period;
673
674 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
675 wl->dtim_period);
676
677 /*
678 * mac80211 enables PSM only if we're already associated.
679 */
680 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
681 if (ret < 0)
682 goto out_sleep;
683 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) {
684 wl1251_debug(DEBUG_PSM, "psm disabled");
685
686 wl->psm_requested = false;
687
688 if (wl->station_mode != STATION_ACTIVE_MODE) {
689 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
690 if (ret < 0)
691 goto out_sleep;
692 }
693 }
694
695 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) {
696 if (conf->flags & IEEE80211_CONF_IDLE) {
697 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
698 if (ret < 0)
699 goto out_sleep;
700 } else {
701 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
702 if (ret < 0)
703 goto out_sleep;
704 ret = wl1251_join(wl, wl->bss_type, wl->channel,
705 wl->beacon_int, wl->dtim_period);
706 if (ret < 0)
707 goto out_sleep;
708 }
709 }
710
711 if (conf->power_level != wl->power_level) {
712 ret = wl1251_acx_tx_power(wl, conf->power_level);
713 if (ret < 0)
714 goto out_sleep;
715
716 wl->power_level = conf->power_level;
717 }
718
719 out_sleep:
720 wl1251_ps_elp_sleep(wl);
721
722 out:
723 mutex_unlock(&wl->mutex);
724
725 return ret;
726 }
727
728 struct wl1251_filter_params {
729 bool enabled;
730 int mc_list_length;
731 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
732 };
733
734 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw,
735 struct netdev_hw_addr_list *mc_list)
736 {
737 struct wl1251_filter_params *fp;
738 struct netdev_hw_addr *ha;
739 struct wl1251 *wl = hw->priv;
740
741 if (unlikely(wl->state == WL1251_STATE_OFF))
742 return 0;
743
744 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
745 if (!fp) {
746 wl1251_error("Out of memory setting filters.");
747 return 0;
748 }
749
750 /* update multicast filtering parameters */
751 fp->mc_list_length = 0;
752 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
753 fp->enabled = false;
754 } else {
755 fp->enabled = true;
756 netdev_hw_addr_list_for_each(ha, mc_list) {
757 memcpy(fp->mc_list[fp->mc_list_length],
758 ha->addr, ETH_ALEN);
759 fp->mc_list_length++;
760 }
761 }
762
763 return (u64)(unsigned long)fp;
764 }
765
766 #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \
767 FIF_FCSFAIL | \
768 FIF_BCN_PRBRESP_PROMISC | \
769 FIF_CONTROL | \
770 FIF_OTHER_BSS | \
771 FIF_PROBE_REQ)
772
773 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
774 unsigned int changed,
775 unsigned int *total, u64 multicast)
776 {
777 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast;
778 struct wl1251 *wl = hw->priv;
779 int ret;
780
781 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
782
783 *total &= WL1251_SUPPORTED_FILTERS;
784 changed &= WL1251_SUPPORTED_FILTERS;
785
786 if (changed == 0) {
787 /* no filters which we support changed */
788 kfree(fp);
789 return;
790 }
791
792 mutex_lock(&wl->mutex);
793
794 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
795 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
796
797 if (*total & FIF_ALLMULTI)
798 /*
799 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
800 * all multicast frames
801 */
802 wl->rx_config &= ~CFG_MC_FILTER_EN;
803 if (*total & FIF_FCSFAIL)
804 wl->rx_filter |= CFG_RX_FCS_ERROR;
805 if (*total & FIF_BCN_PRBRESP_PROMISC) {
806 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
807 wl->rx_config &= ~CFG_SSID_FILTER_EN;
808 }
809 if (*total & FIF_CONTROL)
810 wl->rx_filter |= CFG_RX_CTL_EN;
811 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
812 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
813 if (*total & FIF_PROBE_REQ)
814 wl->rx_filter |= CFG_RX_PREQ_EN;
815
816 if (wl->state == WL1251_STATE_OFF)
817 goto out;
818
819 ret = wl1251_ps_elp_wakeup(wl);
820 if (ret < 0)
821 goto out;
822
823 if (*total & FIF_ALLMULTI)
824 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0);
825 else if (fp)
826 ret = wl1251_acx_group_address_tbl(wl, fp->enabled,
827 fp->mc_list,
828 fp->mc_list_length);
829 if (ret < 0)
830 goto out;
831
832 /* send filters to firmware */
833 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
834
835 wl1251_ps_elp_sleep(wl);
836
837 out:
838 mutex_unlock(&wl->mutex);
839 kfree(fp);
840 }
841
842 /* HW encryption */
843 static int wl1251_set_key_type(struct wl1251 *wl,
844 struct wl1251_cmd_set_keys *key,
845 enum set_key_cmd cmd,
846 struct ieee80211_key_conf *mac80211_key,
847 const u8 *addr)
848 {
849 switch (mac80211_key->cipher) {
850 case WLAN_CIPHER_SUITE_WEP40:
851 case WLAN_CIPHER_SUITE_WEP104:
852 if (is_broadcast_ether_addr(addr))
853 key->key_type = KEY_WEP_DEFAULT;
854 else
855 key->key_type = KEY_WEP_ADDR;
856
857 mac80211_key->hw_key_idx = mac80211_key->keyidx;
858 break;
859 case WLAN_CIPHER_SUITE_TKIP:
860 if (is_broadcast_ether_addr(addr))
861 key->key_type = KEY_TKIP_MIC_GROUP;
862 else
863 key->key_type = KEY_TKIP_MIC_PAIRWISE;
864
865 mac80211_key->hw_key_idx = mac80211_key->keyidx;
866 break;
867 case WLAN_CIPHER_SUITE_CCMP:
868 if (is_broadcast_ether_addr(addr))
869 key->key_type = KEY_AES_GROUP;
870 else
871 key->key_type = KEY_AES_PAIRWISE;
872 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
873 break;
874 default:
875 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
876 return -EOPNOTSUPP;
877 }
878
879 return 0;
880 }
881
882 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
883 struct ieee80211_vif *vif,
884 struct ieee80211_sta *sta,
885 struct ieee80211_key_conf *key)
886 {
887 struct wl1251 *wl = hw->priv;
888 struct wl1251_cmd_set_keys *wl_cmd;
889 const u8 *addr;
890 int ret;
891
892 static const u8 bcast_addr[ETH_ALEN] =
893 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
894
895 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
896
897 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
898 if (!wl_cmd) {
899 ret = -ENOMEM;
900 goto out;
901 }
902
903 addr = sta ? sta->addr : bcast_addr;
904
905 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
906 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
907 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
908 key->cipher, key->keyidx, key->keylen, key->flags);
909 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
910
911 if (is_zero_ether_addr(addr)) {
912 /* We dont support TX only encryption */
913 ret = -EOPNOTSUPP;
914 goto out;
915 }
916
917 mutex_lock(&wl->mutex);
918
919 switch (cmd) {
920 case SET_KEY:
921 if (wl->monitor_present) {
922 ret = -EOPNOTSUPP;
923 goto out_unlock;
924 }
925 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
926 break;
927 case DISABLE_KEY:
928 wl_cmd->key_action = KEY_REMOVE;
929 break;
930 default:
931 wl1251_error("Unsupported key cmd 0x%x", cmd);
932 break;
933 }
934
935 ret = wl1251_ps_elp_wakeup(wl);
936 if (ret < 0)
937 goto out_unlock;
938
939 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
940 if (ret < 0) {
941 wl1251_error("Set KEY type failed");
942 goto out_sleep;
943 }
944
945 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
946 memcpy(wl_cmd->addr, addr, ETH_ALEN);
947
948 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
949 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
950 /*
951 * We get the key in the following form:
952 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
953 * but the target is expecting:
954 * TKIP - RX MIC - TX MIC
955 */
956 memcpy(wl_cmd->key, key->key, 16);
957 memcpy(wl_cmd->key + 16, key->key + 24, 8);
958 memcpy(wl_cmd->key + 24, key->key + 16, 8);
959
960 } else {
961 memcpy(wl_cmd->key, key->key, key->keylen);
962 }
963 wl_cmd->key_size = key->keylen;
964
965 wl_cmd->id = key->keyidx;
966 wl_cmd->ssid_profile = 0;
967
968 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
969
970 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
971 if (ret < 0) {
972 wl1251_warning("could not set keys");
973 goto out_sleep;
974 }
975
976 out_sleep:
977 wl1251_ps_elp_sleep(wl);
978
979 out_unlock:
980 mutex_unlock(&wl->mutex);
981
982 out:
983 kfree(wl_cmd);
984
985 return ret;
986 }
987
988 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
989 struct ieee80211_vif *vif,
990 struct ieee80211_scan_request *hw_req)
991 {
992 struct cfg80211_scan_request *req = &hw_req->req;
993 struct wl1251 *wl = hw->priv;
994 struct sk_buff *skb;
995 size_t ssid_len = 0;
996 u8 *ssid = NULL;
997 int ret;
998
999 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
1000
1001 if (req->n_ssids) {
1002 ssid = req->ssids[0].ssid;
1003 ssid_len = req->ssids[0].ssid_len;
1004 }
1005
1006 mutex_lock(&wl->mutex);
1007
1008 if (wl->scanning) {
1009 wl1251_debug(DEBUG_SCAN, "scan already in progress");
1010 ret = -EINVAL;
1011 goto out;
1012 }
1013
1014 ret = wl1251_ps_elp_wakeup(wl);
1015 if (ret < 0)
1016 goto out;
1017
1018 if (hw->conf.flags & IEEE80211_CONF_IDLE) {
1019 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
1020 if (ret < 0)
1021 goto out_sleep;
1022 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1023 wl->beacon_int, wl->dtim_period);
1024 if (ret < 0)
1025 goto out_sleep;
1026 }
1027
1028 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len,
1029 req->ie_len);
1030 if (!skb) {
1031 ret = -ENOMEM;
1032 goto out_idle;
1033 }
1034 if (req->ie_len)
1035 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
1036
1037 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
1038 skb->len);
1039 dev_kfree_skb(skb);
1040 if (ret < 0)
1041 goto out_idle;
1042
1043 ret = wl1251_cmd_trigger_scan_to(wl, 0);
1044 if (ret < 0)
1045 goto out_idle;
1046
1047 wl->scanning = true;
1048
1049 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
1050 req->n_channels, WL1251_SCAN_NUM_PROBES);
1051 if (ret < 0) {
1052 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
1053 wl->scanning = false;
1054 goto out_idle;
1055 }
1056 goto out_sleep;
1057
1058 out_idle:
1059 if (hw->conf.flags & IEEE80211_CONF_IDLE)
1060 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
1061 out_sleep:
1062 wl1251_ps_elp_sleep(wl);
1063
1064 out:
1065 mutex_unlock(&wl->mutex);
1066
1067 return ret;
1068 }
1069
1070 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1071 {
1072 struct wl1251 *wl = hw->priv;
1073 int ret;
1074
1075 mutex_lock(&wl->mutex);
1076
1077 ret = wl1251_ps_elp_wakeup(wl);
1078 if (ret < 0)
1079 goto out;
1080
1081 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1082 if (ret < 0)
1083 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1084
1085 wl1251_ps_elp_sleep(wl);
1086
1087 out:
1088 mutex_unlock(&wl->mutex);
1089
1090 return ret;
1091 }
1092
1093 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1094 struct ieee80211_vif *vif,
1095 struct ieee80211_bss_conf *bss_conf,
1096 u32 changed)
1097 {
1098 struct wl1251 *wl = hw->priv;
1099 struct sk_buff *beacon, *skb;
1100 bool enable;
1101 int ret;
1102
1103 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1104
1105 mutex_lock(&wl->mutex);
1106
1107 ret = wl1251_ps_elp_wakeup(wl);
1108 if (ret < 0)
1109 goto out;
1110
1111 if (changed & BSS_CHANGED_CQM) {
1112 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
1113 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
1114 WL1251_DEFAULT_LOW_RSSI_DEPTH,
1115 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
1116 if (ret < 0)
1117 goto out;
1118 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1119 }
1120
1121 if ((changed & BSS_CHANGED_BSSID) &&
1122 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1123 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1124
1125 if (!is_zero_ether_addr(wl->bssid)) {
1126 ret = wl1251_build_null_data(wl);
1127 if (ret < 0)
1128 goto out_sleep;
1129
1130 ret = wl1251_build_qos_null_data(wl);
1131 if (ret < 0)
1132 goto out_sleep;
1133
1134 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1135 wl->beacon_int, wl->dtim_period);
1136 if (ret < 0)
1137 goto out_sleep;
1138 }
1139 }
1140
1141 if (changed & BSS_CHANGED_ASSOC) {
1142 if (bss_conf->assoc) {
1143 wl->beacon_int = bss_conf->beacon_int;
1144
1145 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1146 if (!skb)
1147 goto out_sleep;
1148
1149 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1150 skb->data,
1151 skb->len);
1152 dev_kfree_skb(skb);
1153 if (ret < 0)
1154 goto out_sleep;
1155
1156 ret = wl1251_acx_aid(wl, bss_conf->aid);
1157 if (ret < 0)
1158 goto out_sleep;
1159 } else {
1160 /* use defaults when not associated */
1161 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1162 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1163 }
1164 }
1165 if (changed & BSS_CHANGED_ERP_SLOT) {
1166 if (bss_conf->use_short_slot)
1167 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1168 else
1169 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1170 if (ret < 0) {
1171 wl1251_warning("Set slot time failed %d", ret);
1172 goto out_sleep;
1173 }
1174 }
1175
1176 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1177 if (bss_conf->use_short_preamble)
1178 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1179 else
1180 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1181 }
1182
1183 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1184 if (bss_conf->use_cts_prot)
1185 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1186 else
1187 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1188 if (ret < 0) {
1189 wl1251_warning("Set ctsprotect failed %d", ret);
1190 goto out_sleep;
1191 }
1192 }
1193
1194 if (changed & BSS_CHANGED_ARP_FILTER) {
1195 __be32 addr = bss_conf->arp_addr_list[0];
1196 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
1197
1198 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
1199 wl1251_acx_arp_ip_filter(wl, enable, addr);
1200
1201 if (ret < 0)
1202 goto out_sleep;
1203 }
1204
1205 if (changed & BSS_CHANGED_BEACON) {
1206 beacon = ieee80211_beacon_get(hw, vif);
1207 if (!beacon)
1208 goto out_sleep;
1209
1210 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1211 beacon->len);
1212
1213 if (ret < 0) {
1214 dev_kfree_skb(beacon);
1215 goto out_sleep;
1216 }
1217
1218 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1219 beacon->len);
1220
1221 dev_kfree_skb(beacon);
1222
1223 if (ret < 0)
1224 goto out_sleep;
1225
1226 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1227 wl->beacon_int, wl->dtim_period);
1228
1229 if (ret < 0)
1230 goto out_sleep;
1231 }
1232
1233 out_sleep:
1234 wl1251_ps_elp_sleep(wl);
1235
1236 out:
1237 mutex_unlock(&wl->mutex);
1238 }
1239
1240
1241 /* can't be const, mac80211 writes to this */
1242 static struct ieee80211_rate wl1251_rates[] = {
1243 { .bitrate = 10,
1244 .hw_value = 0x1,
1245 .hw_value_short = 0x1, },
1246 { .bitrate = 20,
1247 .hw_value = 0x2,
1248 .hw_value_short = 0x2,
1249 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1250 { .bitrate = 55,
1251 .hw_value = 0x4,
1252 .hw_value_short = 0x4,
1253 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1254 { .bitrate = 110,
1255 .hw_value = 0x20,
1256 .hw_value_short = 0x20,
1257 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1258 { .bitrate = 60,
1259 .hw_value = 0x8,
1260 .hw_value_short = 0x8, },
1261 { .bitrate = 90,
1262 .hw_value = 0x10,
1263 .hw_value_short = 0x10, },
1264 { .bitrate = 120,
1265 .hw_value = 0x40,
1266 .hw_value_short = 0x40, },
1267 { .bitrate = 180,
1268 .hw_value = 0x80,
1269 .hw_value_short = 0x80, },
1270 { .bitrate = 240,
1271 .hw_value = 0x200,
1272 .hw_value_short = 0x200, },
1273 { .bitrate = 360,
1274 .hw_value = 0x400,
1275 .hw_value_short = 0x400, },
1276 { .bitrate = 480,
1277 .hw_value = 0x800,
1278 .hw_value_short = 0x800, },
1279 { .bitrate = 540,
1280 .hw_value = 0x1000,
1281 .hw_value_short = 0x1000, },
1282 };
1283
1284 /* can't be const, mac80211 writes to this */
1285 static struct ieee80211_channel wl1251_channels[] = {
1286 { .hw_value = 1, .center_freq = 2412},
1287 { .hw_value = 2, .center_freq = 2417},
1288 { .hw_value = 3, .center_freq = 2422},
1289 { .hw_value = 4, .center_freq = 2427},
1290 { .hw_value = 5, .center_freq = 2432},
1291 { .hw_value = 6, .center_freq = 2437},
1292 { .hw_value = 7, .center_freq = 2442},
1293 { .hw_value = 8, .center_freq = 2447},
1294 { .hw_value = 9, .center_freq = 2452},
1295 { .hw_value = 10, .center_freq = 2457},
1296 { .hw_value = 11, .center_freq = 2462},
1297 { .hw_value = 12, .center_freq = 2467},
1298 { .hw_value = 13, .center_freq = 2472},
1299 };
1300
1301 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1302 struct ieee80211_vif *vif, u16 queue,
1303 const struct ieee80211_tx_queue_params *params)
1304 {
1305 enum wl1251_acx_ps_scheme ps_scheme;
1306 struct wl1251 *wl = hw->priv;
1307 int ret;
1308
1309 mutex_lock(&wl->mutex);
1310
1311 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1312
1313 ret = wl1251_ps_elp_wakeup(wl);
1314 if (ret < 0)
1315 goto out;
1316
1317 /* mac80211 uses units of 32 usec */
1318 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1319 params->cw_min, params->cw_max,
1320 params->aifs, params->txop * 32);
1321 if (ret < 0)
1322 goto out_sleep;
1323
1324 if (params->uapsd)
1325 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1326 else
1327 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1328
1329 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1330 CHANNEL_TYPE_EDCF,
1331 wl1251_tx_get_queue(queue), ps_scheme,
1332 WL1251_ACX_ACK_POLICY_LEGACY);
1333 if (ret < 0)
1334 goto out_sleep;
1335
1336 out_sleep:
1337 wl1251_ps_elp_sleep(wl);
1338
1339 out:
1340 mutex_unlock(&wl->mutex);
1341
1342 return ret;
1343 }
1344
1345 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1346 struct survey_info *survey)
1347 {
1348 struct wl1251 *wl = hw->priv;
1349 struct ieee80211_conf *conf = &hw->conf;
1350
1351 if (idx != 0)
1352 return -ENOENT;
1353
1354 survey->channel = conf->chandef.chan;
1355 survey->filled = SURVEY_INFO_NOISE_DBM;
1356 survey->noise = wl->noise;
1357
1358 return 0;
1359 }
1360
1361 /* can't be const, mac80211 writes to this */
1362 static struct ieee80211_supported_band wl1251_band_2ghz = {
1363 .channels = wl1251_channels,
1364 .n_channels = ARRAY_SIZE(wl1251_channels),
1365 .bitrates = wl1251_rates,
1366 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1367 };
1368
1369 static const struct ieee80211_ops wl1251_ops = {
1370 .start = wl1251_op_start,
1371 .stop = wl1251_op_stop,
1372 .add_interface = wl1251_op_add_interface,
1373 .remove_interface = wl1251_op_remove_interface,
1374 .config = wl1251_op_config,
1375 .prepare_multicast = wl1251_op_prepare_multicast,
1376 .configure_filter = wl1251_op_configure_filter,
1377 .tx = wl1251_op_tx,
1378 .set_key = wl1251_op_set_key,
1379 .hw_scan = wl1251_op_hw_scan,
1380 .bss_info_changed = wl1251_op_bss_info_changed,
1381 .set_rts_threshold = wl1251_op_set_rts_threshold,
1382 .conf_tx = wl1251_op_conf_tx,
1383 .get_survey = wl1251_op_get_survey,
1384 };
1385
1386 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1387 {
1388 unsigned long timeout;
1389
1390 wl1251_reg_write32(wl, EE_ADDR, offset);
1391 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1392
1393 /* EE_CTL_READ clears when data is ready */
1394 timeout = jiffies + msecs_to_jiffies(100);
1395 while (1) {
1396 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1397 break;
1398
1399 if (time_after(jiffies, timeout))
1400 return -ETIMEDOUT;
1401
1402 msleep(1);
1403 }
1404
1405 *data = wl1251_reg_read32(wl, EE_DATA);
1406 return 0;
1407 }
1408
1409 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1410 u8 *data, size_t len)
1411 {
1412 size_t i;
1413 int ret;
1414
1415 wl1251_reg_write32(wl, EE_START, 0);
1416
1417 for (i = 0; i < len; i++) {
1418 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1419 if (ret < 0)
1420 return ret;
1421 }
1422
1423 return 0;
1424 }
1425
1426 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1427 {
1428 u8 mac[ETH_ALEN];
1429 int i, ret;
1430
1431 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1432
1433 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1434 if (ret < 0) {
1435 wl1251_warning("failed to read MAC address from EEPROM");
1436 return ret;
1437 }
1438
1439 /* MAC is stored in reverse order */
1440 for (i = 0; i < ETH_ALEN; i++)
1441 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1442
1443 return 0;
1444 }
1445
1446 static int wl1251_register_hw(struct wl1251 *wl)
1447 {
1448 int ret;
1449
1450 if (wl->mac80211_registered)
1451 return 0;
1452
1453 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1454
1455 ret = ieee80211_register_hw(wl->hw);
1456 if (ret < 0) {
1457 wl1251_error("unable to register mac80211 hw: %d", ret);
1458 return ret;
1459 }
1460
1461 wl->mac80211_registered = true;
1462
1463 wl1251_notice("loaded");
1464
1465 return 0;
1466 }
1467
1468 int wl1251_init_ieee80211(struct wl1251 *wl)
1469 {
1470 int ret;
1471
1472 /* The tx descriptor buffer and the TKIP space */
1473 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1474 + WL1251_TKIP_IV_SPACE;
1475
1476 /* unit us */
1477 /* FIXME: find a proper value */
1478
1479 ieee80211_hw_set(wl->hw, SIGNAL_DBM);
1480 ieee80211_hw_set(wl->hw, SUPPORTS_PS);
1481
1482 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1483 BIT(NL80211_IFTYPE_ADHOC);
1484 wl->hw->wiphy->max_scan_ssids = 1;
1485 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1486
1487 wl->hw->queues = 4;
1488
1489 if (wl->use_eeprom)
1490 wl1251_read_eeprom_mac(wl);
1491
1492 ret = wl1251_register_hw(wl);
1493 if (ret)
1494 goto out;
1495
1496 wl1251_debugfs_init(wl);
1497 wl1251_notice("initialized");
1498
1499 ret = 0;
1500
1501 out:
1502 return ret;
1503 }
1504 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1505
1506 struct ieee80211_hw *wl1251_alloc_hw(void)
1507 {
1508 struct ieee80211_hw *hw;
1509 struct wl1251 *wl;
1510 int i;
1511 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1512
1513 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1514 if (!hw) {
1515 wl1251_error("could not alloc ieee80211_hw");
1516 return ERR_PTR(-ENOMEM);
1517 }
1518
1519 wl = hw->priv;
1520 memset(wl, 0, sizeof(*wl));
1521
1522 wl->hw = hw;
1523
1524 wl->data_in_count = 0;
1525
1526 skb_queue_head_init(&wl->tx_queue);
1527
1528 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1529 wl->channel = WL1251_DEFAULT_CHANNEL;
1530 wl->monitor_present = false;
1531 wl->joined = false;
1532 wl->scanning = false;
1533 wl->bss_type = MAX_BSS_TYPE;
1534 wl->default_key = 0;
1535 wl->listen_int = 1;
1536 wl->rx_counter = 0;
1537 wl->rx_handled = 0;
1538 wl->rx_current_buffer = 0;
1539 wl->rx_last_id = 0;
1540 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1541 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1542 wl->elp = false;
1543 wl->station_mode = STATION_ACTIVE_MODE;
1544 wl->psm_requested = false;
1545 wl->psm_entry_retry = 0;
1546 wl->tx_queue_stopped = false;
1547 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1548 wl->rssi_thold = 0;
1549 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1550 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1551 wl->vif = NULL;
1552
1553 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1554 wl->tx_frames[i] = NULL;
1555
1556 wl->next_tx_complete = 0;
1557
1558 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1559 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1560
1561 /*
1562 * In case our MAC address is not correctly set,
1563 * we use a random but Nokia MAC.
1564 */
1565 memcpy(wl->mac_addr, nokia_oui, 3);
1566 get_random_bytes(wl->mac_addr + 3, 3);
1567
1568 wl->state = WL1251_STATE_OFF;
1569 mutex_init(&wl->mutex);
1570
1571 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1572 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1573
1574 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1575 if (!wl->rx_descriptor) {
1576 wl1251_error("could not allocate memory for rx descriptor");
1577 ieee80211_free_hw(hw);
1578 return ERR_PTR(-ENOMEM);
1579 }
1580
1581 return hw;
1582 }
1583 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1584
1585 int wl1251_free_hw(struct wl1251 *wl)
1586 {
1587 ieee80211_unregister_hw(wl->hw);
1588
1589 wl1251_debugfs_exit(wl);
1590
1591 kfree(wl->target_mem_map);
1592 kfree(wl->data_path);
1593 vfree(wl->fw);
1594 wl->fw = NULL;
1595 kfree(wl->nvs);
1596 wl->nvs = NULL;
1597
1598 kfree(wl->rx_descriptor);
1599 wl->rx_descriptor = NULL;
1600
1601 ieee80211_free_hw(wl->hw);
1602
1603 return 0;
1604 }
1605 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1606
1607 MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core");
1608 MODULE_LICENSE("GPL");
1609 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1610 MODULE_FIRMWARE(WL1251_FW_NAME);
1611 MODULE_FIRMWARE(WL1251_NVS_NAME);
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