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Linux 4.19.133
[linux/fpc-iii.git] / drivers / net / wireless / ti / wl1251 / main.c
blobbd8641ad953b95e830bf0f220fe82d1fc610cd12
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 = kmemdup(fw->data, fw->size, 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 wl->nvs_len = fw->size;
134
135 ret = 0;
136
137 out:
138 release_firmware(fw);
139
140 return ret;
141 }
142
143 static void wl1251_fw_wakeup(struct wl1251 *wl)
144 {
145 u32 elp_reg;
146
147 elp_reg = ELPCTRL_WAKE_UP;
148 wl1251_write_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR, elp_reg);
149 elp_reg = wl1251_read_elp(wl, HW_ACCESS_ELP_CTRL_REG_ADDR);
150
151 if (!(elp_reg & ELPCTRL_WLAN_READY))
152 wl1251_warning("WLAN not ready");
153 }
154
155 static int wl1251_chip_wakeup(struct wl1251 *wl)
156 {
157 int ret;
158
159 ret = wl1251_power_on(wl);
160 if (ret < 0)
161 return ret;
162
163 msleep(WL1251_POWER_ON_SLEEP);
164 wl->if_ops->reset(wl);
165
166 /* We don't need a real memory partition here, because we only want
167 * to use the registers at this point. */
168 wl1251_set_partition(wl,
169 0x00000000,
170 0x00000000,
171 REGISTERS_BASE,
172 REGISTERS_DOWN_SIZE);
173
174 /* ELP module wake up */
175 wl1251_fw_wakeup(wl);
176
177 /* whal_FwCtrl_BootSm() */
178
179 /* 0. read chip id from CHIP_ID */
180 wl->chip_id = wl1251_reg_read32(wl, CHIP_ID_B);
181
182 /* 1. check if chip id is valid */
183
184 switch (wl->chip_id) {
185 case CHIP_ID_1251_PG12:
186 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG12)",
187 wl->chip_id);
188 break;
189 case CHIP_ID_1251_PG11:
190 wl1251_debug(DEBUG_BOOT, "chip id 0x%x (1251 PG11)",
191 wl->chip_id);
192 break;
193 case CHIP_ID_1251_PG10:
194 default:
195 wl1251_error("unsupported chip id: 0x%x", wl->chip_id);
196 ret = -ENODEV;
197 goto out;
198 }
199
200 if (wl->fw == NULL) {
201 ret = wl1251_fetch_firmware(wl);
202 if (ret < 0)
203 goto out;
204 }
205
206 out:
207 return ret;
208 }
209
210 #define WL1251_IRQ_LOOP_COUNT 10
211 static void wl1251_irq_work(struct work_struct *work)
212 {
213 u32 intr, ctr = WL1251_IRQ_LOOP_COUNT;
214 struct wl1251 *wl =
215 container_of(work, struct wl1251, irq_work);
216 int ret;
217
218 mutex_lock(&wl->mutex);
219
220 wl1251_debug(DEBUG_IRQ, "IRQ work");
221
222 if (wl->state == WL1251_STATE_OFF)
223 goto out;
224
225 ret = wl1251_ps_elp_wakeup(wl);
226 if (ret < 0)
227 goto out;
228
229 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, WL1251_ACX_INTR_ALL);
230
231 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
232 wl1251_debug(DEBUG_IRQ, "intr: 0x%x", intr);
233
234 do {
235 if (wl->data_path) {
236 wl->rx_counter = wl1251_mem_read32(
237 wl, wl->data_path->rx_control_addr);
238
239 /* We handle a frmware bug here */
240 switch ((wl->rx_counter - wl->rx_handled) & 0xf) {
241 case 0:
242 wl1251_debug(DEBUG_IRQ,
243 "RX: FW and host in sync");
244 intr &= ~WL1251_ACX_INTR_RX0_DATA;
245 intr &= ~WL1251_ACX_INTR_RX1_DATA;
246 break;
247 case 1:
248 wl1251_debug(DEBUG_IRQ, "RX: FW +1");
249 intr |= WL1251_ACX_INTR_RX0_DATA;
250 intr &= ~WL1251_ACX_INTR_RX1_DATA;
251 break;
252 case 2:
253 wl1251_debug(DEBUG_IRQ, "RX: FW +2");
254 intr |= WL1251_ACX_INTR_RX0_DATA;
255 intr |= WL1251_ACX_INTR_RX1_DATA;
256 break;
257 default:
258 wl1251_warning(
259 "RX: FW and host out of sync: %d",
260 wl->rx_counter - wl->rx_handled);
261 break;
262 }
263
264 wl->rx_handled = wl->rx_counter;
265
266 wl1251_debug(DEBUG_IRQ, "RX counter: %d",
267 wl->rx_counter);
268 }
269
270 intr &= wl->intr_mask;
271
272 if (intr == 0) {
273 wl1251_debug(DEBUG_IRQ, "INTR is 0");
274 goto out_sleep;
275 }
276
277 if (intr & WL1251_ACX_INTR_RX0_DATA) {
278 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX0_DATA");
279 wl1251_rx(wl);
280 }
281
282 if (intr & WL1251_ACX_INTR_RX1_DATA) {
283 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_RX1_DATA");
284 wl1251_rx(wl);
285 }
286
287 if (intr & WL1251_ACX_INTR_TX_RESULT) {
288 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_TX_RESULT");
289 wl1251_tx_complete(wl);
290 }
291
292 if (intr & WL1251_ACX_INTR_EVENT_A) {
293 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_A");
294 wl1251_event_handle(wl, 0);
295 }
296
297 if (intr & WL1251_ACX_INTR_EVENT_B) {
298 wl1251_debug(DEBUG_IRQ, "WL1251_ACX_INTR_EVENT_B");
299 wl1251_event_handle(wl, 1);
300 }
301
302 if (intr & WL1251_ACX_INTR_INIT_COMPLETE)
303 wl1251_debug(DEBUG_IRQ,
304 "WL1251_ACX_INTR_INIT_COMPLETE");
305
306 if (--ctr == 0)
307 break;
308
309 intr = wl1251_reg_read32(wl, ACX_REG_INTERRUPT_CLEAR);
310 } while (intr);
311
312 out_sleep:
313 wl1251_reg_write32(wl, ACX_REG_INTERRUPT_MASK, ~(wl->intr_mask));
314 wl1251_ps_elp_sleep(wl);
315
316 out:
317 mutex_unlock(&wl->mutex);
318 }
319
320 static int wl1251_join(struct wl1251 *wl, u8 bss_type, u8 channel,
321 u16 beacon_interval, u8 dtim_period)
322 {
323 int ret;
324
325 ret = wl1251_acx_frame_rates(wl, DEFAULT_HW_GEN_TX_RATE,
326 DEFAULT_HW_GEN_MODULATION_TYPE,
327 wl->tx_mgmt_frm_rate,
328 wl->tx_mgmt_frm_mod);
329 if (ret < 0)
330 goto out;
331
332 /*
333 * Join command applies filters, and if we are not associated,
334 * BSSID filter must be disabled for association to work.
335 */
336 if (is_zero_ether_addr(wl->bssid))
337 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
338
339 ret = wl1251_cmd_join(wl, bss_type, channel, beacon_interval,
340 dtim_period);
341 if (ret < 0)
342 goto out;
343
344 ret = wl1251_event_wait(wl, JOIN_EVENT_COMPLETE_ID, 100);
345 if (ret < 0)
346 wl1251_warning("join timeout");
347
348 out:
349 return ret;
350 }
351
352 static void wl1251_op_tx(struct ieee80211_hw *hw,
353 struct ieee80211_tx_control *control,
354 struct sk_buff *skb)
355 {
356 struct wl1251 *wl = hw->priv;
357 unsigned long flags;
358
359 skb_queue_tail(&wl->tx_queue, skb);
360
361 /*
362 * The chip specific setup must run before the first TX packet -
363 * before that, the tx_work will not be initialized!
364 */
365
366 ieee80211_queue_work(wl->hw, &wl->tx_work);
367
368 /*
369 * The workqueue is slow to process the tx_queue and we need stop
370 * the queue here, otherwise the queue will get too long.
371 */
372 if (skb_queue_len(&wl->tx_queue) >= WL1251_TX_QUEUE_HIGH_WATERMARK) {
373 wl1251_debug(DEBUG_TX, "op_tx: tx_queue full, stop queues");
374
375 spin_lock_irqsave(&wl->wl_lock, flags);
376 ieee80211_stop_queues(wl->hw);
377 wl->tx_queue_stopped = true;
378 spin_unlock_irqrestore(&wl->wl_lock, flags);
379 }
380 }
381
382 static int wl1251_op_start(struct ieee80211_hw *hw)
383 {
384 struct wl1251 *wl = hw->priv;
385 struct wiphy *wiphy = hw->wiphy;
386 int ret = 0;
387
388 wl1251_debug(DEBUG_MAC80211, "mac80211 start");
389
390 mutex_lock(&wl->mutex);
391
392 if (wl->state != WL1251_STATE_OFF) {
393 wl1251_error("cannot start because not in off state: %d",
394 wl->state);
395 ret = -EBUSY;
396 goto out;
397 }
398
399 ret = wl1251_chip_wakeup(wl);
400 if (ret < 0)
401 goto out;
402
403 ret = wl1251_boot(wl);
404 if (ret < 0)
405 goto out;
406
407 ret = wl1251_hw_init(wl);
408 if (ret < 0)
409 goto out;
410
411 ret = wl1251_acx_station_id(wl);
412 if (ret < 0)
413 goto out;
414
415 wl->state = WL1251_STATE_ON;
416
417 wl1251_info("firmware booted (%s)", wl->fw_ver);
418
419 /* update hw/fw version info in wiphy struct */
420 wiphy->hw_version = wl->chip_id;
421 strncpy(wiphy->fw_version, wl->fw_ver, sizeof(wiphy->fw_version));
422
423 out:
424 if (ret < 0)
425 wl1251_power_off(wl);
426
427 mutex_unlock(&wl->mutex);
428
429 return ret;
430 }
431
432 static void wl1251_op_stop(struct ieee80211_hw *hw)
433 {
434 struct wl1251 *wl = hw->priv;
435
436 wl1251_info("down");
437
438 wl1251_debug(DEBUG_MAC80211, "mac80211 stop");
439
440 mutex_lock(&wl->mutex);
441
442 WARN_ON(wl->state != WL1251_STATE_ON);
443
444 if (wl->scanning) {
445 struct cfg80211_scan_info info = {
446 .aborted = true,
447 };
448
449 ieee80211_scan_completed(wl->hw, &info);
450 wl->scanning = false;
451 }
452
453 wl->state = WL1251_STATE_OFF;
454
455 wl1251_disable_interrupts(wl);
456
457 mutex_unlock(&wl->mutex);
458
459 cancel_work_sync(&wl->irq_work);
460 cancel_work_sync(&wl->tx_work);
461 cancel_delayed_work_sync(&wl->elp_work);
462
463 mutex_lock(&wl->mutex);
464
465 /* let's notify MAC80211 about the remaining pending TX frames */
466 wl1251_tx_flush(wl);
467 wl1251_power_off(wl);
468
469 eth_zero_addr(wl->bssid);
470 wl->listen_int = 1;
471 wl->bss_type = MAX_BSS_TYPE;
472
473 wl->data_in_count = 0;
474 wl->rx_counter = 0;
475 wl->rx_handled = 0;
476 wl->rx_current_buffer = 0;
477 wl->rx_last_id = 0;
478 wl->next_tx_complete = 0;
479 wl->elp = false;
480 wl->station_mode = STATION_ACTIVE_MODE;
481 wl->psm_entry_retry = 0;
482 wl->tx_queue_stopped = false;
483 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
484 wl->rssi_thold = 0;
485 wl->channel = WL1251_DEFAULT_CHANNEL;
486 wl->monitor_present = false;
487 wl->joined = false;
488
489 wl1251_debugfs_reset(wl);
490
491 mutex_unlock(&wl->mutex);
492 }
493
494 static int wl1251_op_add_interface(struct ieee80211_hw *hw,
495 struct ieee80211_vif *vif)
496 {
497 struct wl1251 *wl = hw->priv;
498 int ret = 0;
499
500 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
501 IEEE80211_VIF_SUPPORTS_UAPSD |
502 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
503
504 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
505 vif->type, vif->addr);
506
507 mutex_lock(&wl->mutex);
508 if (wl->vif) {
509 ret = -EBUSY;
510 goto out;
511 }
512
513 wl->vif = vif;
514
515 switch (vif->type) {
516 case NL80211_IFTYPE_STATION:
517 wl->bss_type = BSS_TYPE_STA_BSS;
518 break;
519 case NL80211_IFTYPE_ADHOC:
520 wl->bss_type = BSS_TYPE_IBSS;
521 break;
522 default:
523 ret = -EOPNOTSUPP;
524 goto out;
525 }
526
527 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) {
528 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
529 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
530 ret = wl1251_acx_station_id(wl);
531 if (ret < 0)
532 goto out;
533 }
534
535 out:
536 mutex_unlock(&wl->mutex);
537 return ret;
538 }
539
540 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
541 struct ieee80211_vif *vif)
542 {
543 struct wl1251 *wl = hw->priv;
544
545 mutex_lock(&wl->mutex);
546 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
547 wl->vif = NULL;
548 eth_zero_addr(wl->bssid);
549 mutex_unlock(&wl->mutex);
550 }
551
552 static int wl1251_build_null_data(struct wl1251 *wl)
553 {
554 struct sk_buff *skb = NULL;
555 int size;
556 void *ptr;
557 int ret = -ENOMEM;
558
559 if (wl->bss_type == BSS_TYPE_IBSS) {
560 size = sizeof(struct wl12xx_null_data_template);
561 ptr = NULL;
562 } else {
563 skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false);
564 if (!skb)
565 goto out;
566 size = skb->len;
567 ptr = skb->data;
568 }
569
570 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA, ptr, size);
571
572 out:
573 dev_kfree_skb(skb);
574 if (ret)
575 wl1251_warning("cmd buld null data failed: %d", ret);
576
577 return ret;
578 }
579
580 static int wl1251_build_qos_null_data(struct wl1251 *wl)
581 {
582 struct ieee80211_qos_hdr template;
583
584 memset(&template, 0, sizeof(template));
585
586 memcpy(template.addr1, wl->bssid, ETH_ALEN);
587 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
588 memcpy(template.addr3, wl->bssid, ETH_ALEN);
589
590 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
591 IEEE80211_STYPE_QOS_NULLFUNC |
592 IEEE80211_FCTL_TODS);
593
594 /* FIXME: not sure what priority to use here */
595 template.qos_ctrl = cpu_to_le16(0);
596
597 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
598 sizeof(template));
599 }
600
601 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl)
602 {
603 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present;
604 }
605
606 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
607 {
608 struct wl1251 *wl = hw->priv;
609 struct ieee80211_conf *conf = &hw->conf;
610 int channel, ret = 0;
611
612 channel = ieee80211_frequency_to_channel(
613 conf->chandef.chan->center_freq);
614
615 wl1251_debug(DEBUG_MAC80211,
616 "mac80211 config ch %d monitor %s psm %s power %d",
617 channel,
618 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off",
619 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
620 conf->power_level);
621
622 mutex_lock(&wl->mutex);
623
624 ret = wl1251_ps_elp_wakeup(wl);
625 if (ret < 0)
626 goto out;
627
628 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
629 u32 mode;
630
631 if (conf->flags & IEEE80211_CONF_MONITOR) {
632 wl->monitor_present = true;
633 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE;
634 } else {
635 wl->monitor_present = false;
636 mode = 0;
637 }
638
639 ret = wl1251_acx_feature_cfg(wl, mode);
640 if (ret < 0)
641 goto out_sleep;
642 }
643
644 if (channel != wl->channel) {
645 wl->channel = channel;
646
647 /*
648 * Use ENABLE_RX command for channel switching when no
649 * interface is present (monitor mode only).
650 * This leaves the tx path disabled in firmware, whereas
651 * the usual JOIN command seems to transmit some frames
652 * at firmware level.
653 */
654 if (wl->vif == NULL) {
655 wl->joined = false;
656 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
657 } else {
658 ret = wl1251_join(wl, wl->bss_type, wl->channel,
659 wl->beacon_int, wl->dtim_period);
660 }
661 if (ret < 0)
662 goto out_sleep;
663 }
664
665 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) {
666 wl1251_debug(DEBUG_PSM, "psm enabled");
667
668 wl->psm_requested = true;
669
670 wl->dtim_period = conf->ps_dtim_period;
671
672 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
673 wl->dtim_period);
674
675 /*
676 * mac80211 enables PSM only if we're already associated.
677 */
678 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
679 if (ret < 0)
680 goto out_sleep;
681 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) {
682 wl1251_debug(DEBUG_PSM, "psm disabled");
683
684 wl->psm_requested = false;
685
686 if (wl->station_mode != STATION_ACTIVE_MODE) {
687 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
688 if (ret < 0)
689 goto out_sleep;
690 }
691 }
692
693 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) {
694 if (conf->flags & IEEE80211_CONF_IDLE) {
695 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
696 if (ret < 0)
697 goto out_sleep;
698 } else {
699 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
700 if (ret < 0)
701 goto out_sleep;
702 ret = wl1251_join(wl, wl->bss_type, wl->channel,
703 wl->beacon_int, wl->dtim_period);
704 if (ret < 0)
705 goto out_sleep;
706 }
707 }
708
709 if (conf->power_level != wl->power_level) {
710 ret = wl1251_acx_tx_power(wl, conf->power_level);
711 if (ret < 0)
712 goto out_sleep;
713
714 wl->power_level = conf->power_level;
715 }
716
717 out_sleep:
718 wl1251_ps_elp_sleep(wl);
719
720 out:
721 mutex_unlock(&wl->mutex);
722
723 return ret;
724 }
725
726 struct wl1251_filter_params {
727 bool enabled;
728 int mc_list_length;
729 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
730 };
731
732 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw,
733 struct netdev_hw_addr_list *mc_list)
734 {
735 struct wl1251_filter_params *fp;
736 struct netdev_hw_addr *ha;
737 struct wl1251 *wl = hw->priv;
738
739 if (unlikely(wl->state == WL1251_STATE_OFF))
740 return 0;
741
742 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
743 if (!fp) {
744 wl1251_error("Out of memory setting filters.");
745 return 0;
746 }
747
748 /* update multicast filtering parameters */
749 fp->mc_list_length = 0;
750 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
751 fp->enabled = false;
752 } else {
753 fp->enabled = true;
754 netdev_hw_addr_list_for_each(ha, mc_list) {
755 memcpy(fp->mc_list[fp->mc_list_length],
756 ha->addr, ETH_ALEN);
757 fp->mc_list_length++;
758 }
759 }
760
761 return (u64)(unsigned long)fp;
762 }
763
764 #define WL1251_SUPPORTED_FILTERS (FIF_ALLMULTI | \
765 FIF_FCSFAIL | \
766 FIF_BCN_PRBRESP_PROMISC | \
767 FIF_CONTROL | \
768 FIF_OTHER_BSS | \
769 FIF_PROBE_REQ)
770
771 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
772 unsigned int changed,
773 unsigned int *total, u64 multicast)
774 {
775 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast;
776 struct wl1251 *wl = hw->priv;
777 int ret;
778
779 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
780
781 *total &= WL1251_SUPPORTED_FILTERS;
782 changed &= WL1251_SUPPORTED_FILTERS;
783
784 if (changed == 0) {
785 /* no filters which we support changed */
786 kfree(fp);
787 return;
788 }
789
790 mutex_lock(&wl->mutex);
791
792 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
793 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
794
795 if (*total & FIF_ALLMULTI)
796 /*
797 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
798 * all multicast frames
799 */
800 wl->rx_config &= ~CFG_MC_FILTER_EN;
801 if (*total & FIF_FCSFAIL)
802 wl->rx_filter |= CFG_RX_FCS_ERROR;
803 if (*total & FIF_BCN_PRBRESP_PROMISC) {
804 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
805 wl->rx_config &= ~CFG_SSID_FILTER_EN;
806 }
807 if (*total & FIF_CONTROL)
808 wl->rx_filter |= CFG_RX_CTL_EN;
809 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
810 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
811 if (*total & FIF_PROBE_REQ)
812 wl->rx_filter |= CFG_RX_PREQ_EN;
813
814 if (wl->state == WL1251_STATE_OFF)
815 goto out;
816
817 ret = wl1251_ps_elp_wakeup(wl);
818 if (ret < 0)
819 goto out;
820
821 if (*total & FIF_ALLMULTI)
822 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0);
823 else if (fp)
824 ret = wl1251_acx_group_address_tbl(wl, fp->enabled,
825 fp->mc_list,
826 fp->mc_list_length);
827 if (ret < 0)
828 goto out;
829
830 /* send filters to firmware */
831 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
832
833 wl1251_ps_elp_sleep(wl);
834
835 out:
836 mutex_unlock(&wl->mutex);
837 kfree(fp);
838 }
839
840 /* HW encryption */
841 static int wl1251_set_key_type(struct wl1251 *wl,
842 struct wl1251_cmd_set_keys *key,
843 enum set_key_cmd cmd,
844 struct ieee80211_key_conf *mac80211_key,
845 const u8 *addr)
846 {
847 switch (mac80211_key->cipher) {
848 case WLAN_CIPHER_SUITE_WEP40:
849 case WLAN_CIPHER_SUITE_WEP104:
850 if (is_broadcast_ether_addr(addr))
851 key->key_type = KEY_WEP_DEFAULT;
852 else
853 key->key_type = KEY_WEP_ADDR;
854
855 mac80211_key->hw_key_idx = mac80211_key->keyidx;
856 break;
857 case WLAN_CIPHER_SUITE_TKIP:
858 if (is_broadcast_ether_addr(addr))
859 key->key_type = KEY_TKIP_MIC_GROUP;
860 else
861 key->key_type = KEY_TKIP_MIC_PAIRWISE;
862
863 mac80211_key->hw_key_idx = mac80211_key->keyidx;
864 break;
865 case WLAN_CIPHER_SUITE_CCMP:
866 if (is_broadcast_ether_addr(addr))
867 key->key_type = KEY_AES_GROUP;
868 else
869 key->key_type = KEY_AES_PAIRWISE;
870 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
871 break;
872 default:
873 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
874 return -EOPNOTSUPP;
875 }
876
877 return 0;
878 }
879
880 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
881 struct ieee80211_vif *vif,
882 struct ieee80211_sta *sta,
883 struct ieee80211_key_conf *key)
884 {
885 struct wl1251 *wl = hw->priv;
886 struct wl1251_cmd_set_keys *wl_cmd;
887 const u8 *addr;
888 int ret;
889
890 static const u8 bcast_addr[ETH_ALEN] =
891 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
892
893 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
894
895 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
896 if (!wl_cmd) {
897 ret = -ENOMEM;
898 goto out;
899 }
900
901 addr = sta ? sta->addr : bcast_addr;
902
903 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
904 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
905 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
906 key->cipher, key->keyidx, key->keylen, key->flags);
907 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
908
909 if (is_zero_ether_addr(addr)) {
910 /* We dont support TX only encryption */
911 ret = -EOPNOTSUPP;
912 goto out;
913 }
914
915 mutex_lock(&wl->mutex);
916
917 switch (cmd) {
918 case SET_KEY:
919 if (wl->monitor_present) {
920 ret = -EOPNOTSUPP;
921 goto out_unlock;
922 }
923 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
924 break;
925 case DISABLE_KEY:
926 wl_cmd->key_action = KEY_REMOVE;
927 break;
928 default:
929 wl1251_error("Unsupported key cmd 0x%x", cmd);
930 break;
931 }
932
933 ret = wl1251_ps_elp_wakeup(wl);
934 if (ret < 0)
935 goto out_unlock;
936
937 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
938 if (ret < 0) {
939 wl1251_error("Set KEY type failed");
940 goto out_sleep;
941 }
942
943 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
944 memcpy(wl_cmd->addr, addr, ETH_ALEN);
945
946 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
947 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
948 /*
949 * We get the key in the following form:
950 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
951 * but the target is expecting:
952 * TKIP - RX MIC - TX MIC
953 */
954 memcpy(wl_cmd->key, key->key, 16);
955 memcpy(wl_cmd->key + 16, key->key + 24, 8);
956 memcpy(wl_cmd->key + 24, key->key + 16, 8);
957
958 } else {
959 memcpy(wl_cmd->key, key->key, key->keylen);
960 }
961 wl_cmd->key_size = key->keylen;
962
963 wl_cmd->id = key->keyidx;
964 wl_cmd->ssid_profile = 0;
965
966 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
967
968 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
969 if (ret < 0) {
970 wl1251_warning("could not set keys");
971 goto out_sleep;
972 }
973
974 out_sleep:
975 wl1251_ps_elp_sleep(wl);
976
977 out_unlock:
978 mutex_unlock(&wl->mutex);
979
980 out:
981 kfree(wl_cmd);
982
983 return ret;
984 }
985
986 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
987 struct ieee80211_vif *vif,
988 struct ieee80211_scan_request *hw_req)
989 {
990 struct cfg80211_scan_request *req = &hw_req->req;
991 struct wl1251 *wl = hw->priv;
992 struct sk_buff *skb;
993 size_t ssid_len = 0;
994 u8 *ssid = NULL;
995 int ret;
996
997 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
998
999 if (req->n_ssids) {
1000 ssid = req->ssids[0].ssid;
1001 ssid_len = req->ssids[0].ssid_len;
1002 }
1003
1004 mutex_lock(&wl->mutex);
1005
1006 if (wl->scanning) {
1007 wl1251_debug(DEBUG_SCAN, "scan already in progress");
1008 ret = -EINVAL;
1009 goto out;
1010 }
1011
1012 ret = wl1251_ps_elp_wakeup(wl);
1013 if (ret < 0)
1014 goto out;
1015
1016 if (hw->conf.flags & IEEE80211_CONF_IDLE) {
1017 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
1018 if (ret < 0)
1019 goto out_sleep;
1020 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1021 wl->beacon_int, wl->dtim_period);
1022 if (ret < 0)
1023 goto out_sleep;
1024 }
1025
1026 skb = ieee80211_probereq_get(wl->hw, wl->vif->addr, ssid, ssid_len,
1027 req->ie_len);
1028 if (!skb) {
1029 ret = -ENOMEM;
1030 goto out_idle;
1031 }
1032 if (req->ie_len)
1033 skb_put_data(skb, req->ie, req->ie_len);
1034
1035 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
1036 skb->len);
1037 dev_kfree_skb(skb);
1038 if (ret < 0)
1039 goto out_idle;
1040
1041 ret = wl1251_cmd_trigger_scan_to(wl, 0);
1042 if (ret < 0)
1043 goto out_idle;
1044
1045 wl->scanning = true;
1046
1047 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
1048 req->n_channels, WL1251_SCAN_NUM_PROBES);
1049 if (ret < 0) {
1050 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
1051 wl->scanning = false;
1052 goto out_idle;
1053 }
1054 goto out_sleep;
1055
1056 out_idle:
1057 if (hw->conf.flags & IEEE80211_CONF_IDLE)
1058 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
1059 out_sleep:
1060 wl1251_ps_elp_sleep(wl);
1061
1062 out:
1063 mutex_unlock(&wl->mutex);
1064
1065 return ret;
1066 }
1067
1068 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1069 {
1070 struct wl1251 *wl = hw->priv;
1071 int ret;
1072
1073 mutex_lock(&wl->mutex);
1074
1075 ret = wl1251_ps_elp_wakeup(wl);
1076 if (ret < 0)
1077 goto out;
1078
1079 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1080 if (ret < 0)
1081 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1082
1083 wl1251_ps_elp_sleep(wl);
1084
1085 out:
1086 mutex_unlock(&wl->mutex);
1087
1088 return ret;
1089 }
1090
1091 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1092 struct ieee80211_vif *vif,
1093 struct ieee80211_bss_conf *bss_conf,
1094 u32 changed)
1095 {
1096 struct wl1251 *wl = hw->priv;
1097 struct sk_buff *beacon, *skb;
1098 bool enable;
1099 int ret;
1100
1101 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1102
1103 mutex_lock(&wl->mutex);
1104
1105 ret = wl1251_ps_elp_wakeup(wl);
1106 if (ret < 0)
1107 goto out;
1108
1109 if (changed & BSS_CHANGED_CQM) {
1110 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
1111 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
1112 WL1251_DEFAULT_LOW_RSSI_DEPTH,
1113 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
1114 if (ret < 0)
1115 goto out;
1116 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1117 }
1118
1119 if ((changed & BSS_CHANGED_BSSID) &&
1120 memcmp(wl->bssid, bss_conf->bssid, ETH_ALEN)) {
1121 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1122
1123 if (!is_zero_ether_addr(wl->bssid)) {
1124 ret = wl1251_build_null_data(wl);
1125 if (ret < 0)
1126 goto out_sleep;
1127
1128 ret = wl1251_build_qos_null_data(wl);
1129 if (ret < 0)
1130 goto out_sleep;
1131
1132 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1133 wl->beacon_int, wl->dtim_period);
1134 if (ret < 0)
1135 goto out_sleep;
1136 }
1137 }
1138
1139 if (changed & BSS_CHANGED_ASSOC) {
1140 if (bss_conf->assoc) {
1141 wl->beacon_int = bss_conf->beacon_int;
1142
1143 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1144 if (!skb)
1145 goto out_sleep;
1146
1147 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1148 skb->data,
1149 skb->len);
1150 dev_kfree_skb(skb);
1151 if (ret < 0)
1152 goto out_sleep;
1153
1154 ret = wl1251_acx_aid(wl, bss_conf->aid);
1155 if (ret < 0)
1156 goto out_sleep;
1157 } else {
1158 /* use defaults when not associated */
1159 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1160 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1161 }
1162 }
1163 if (changed & BSS_CHANGED_ERP_SLOT) {
1164 if (bss_conf->use_short_slot)
1165 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1166 else
1167 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1168 if (ret < 0) {
1169 wl1251_warning("Set slot time failed %d", ret);
1170 goto out_sleep;
1171 }
1172 }
1173
1174 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1175 if (bss_conf->use_short_preamble)
1176 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1177 else
1178 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1179 }
1180
1181 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1182 if (bss_conf->use_cts_prot)
1183 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1184 else
1185 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1186 if (ret < 0) {
1187 wl1251_warning("Set ctsprotect failed %d", ret);
1188 goto out_sleep;
1189 }
1190 }
1191
1192 if (changed & BSS_CHANGED_ARP_FILTER) {
1193 __be32 addr = bss_conf->arp_addr_list[0];
1194 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
1195
1196 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
1197 ret = wl1251_acx_arp_ip_filter(wl, enable, addr);
1198 if (ret < 0)
1199 goto out_sleep;
1200 }
1201
1202 if (changed & BSS_CHANGED_BEACON) {
1203 beacon = ieee80211_beacon_get(hw, vif);
1204 if (!beacon)
1205 goto out_sleep;
1206
1207 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1208 beacon->len);
1209
1210 if (ret < 0) {
1211 dev_kfree_skb(beacon);
1212 goto out_sleep;
1213 }
1214
1215 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1216 beacon->len);
1217
1218 dev_kfree_skb(beacon);
1219
1220 if (ret < 0)
1221 goto out_sleep;
1222
1223 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1224 wl->beacon_int, wl->dtim_period);
1225
1226 if (ret < 0)
1227 goto out_sleep;
1228 }
1229
1230 out_sleep:
1231 wl1251_ps_elp_sleep(wl);
1232
1233 out:
1234 mutex_unlock(&wl->mutex);
1235 }
1236
1237
1238 /* can't be const, mac80211 writes to this */
1239 static struct ieee80211_rate wl1251_rates[] = {
1240 { .bitrate = 10,
1241 .hw_value = 0x1,
1242 .hw_value_short = 0x1, },
1243 { .bitrate = 20,
1244 .hw_value = 0x2,
1245 .hw_value_short = 0x2,
1246 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1247 { .bitrate = 55,
1248 .hw_value = 0x4,
1249 .hw_value_short = 0x4,
1250 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1251 { .bitrate = 110,
1252 .hw_value = 0x20,
1253 .hw_value_short = 0x20,
1254 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1255 { .bitrate = 60,
1256 .hw_value = 0x8,
1257 .hw_value_short = 0x8, },
1258 { .bitrate = 90,
1259 .hw_value = 0x10,
1260 .hw_value_short = 0x10, },
1261 { .bitrate = 120,
1262 .hw_value = 0x40,
1263 .hw_value_short = 0x40, },
1264 { .bitrate = 180,
1265 .hw_value = 0x80,
1266 .hw_value_short = 0x80, },
1267 { .bitrate = 240,
1268 .hw_value = 0x200,
1269 .hw_value_short = 0x200, },
1270 { .bitrate = 360,
1271 .hw_value = 0x400,
1272 .hw_value_short = 0x400, },
1273 { .bitrate = 480,
1274 .hw_value = 0x800,
1275 .hw_value_short = 0x800, },
1276 { .bitrate = 540,
1277 .hw_value = 0x1000,
1278 .hw_value_short = 0x1000, },
1279 };
1280
1281 /* can't be const, mac80211 writes to this */
1282 static struct ieee80211_channel wl1251_channels[] = {
1283 { .hw_value = 1, .center_freq = 2412},
1284 { .hw_value = 2, .center_freq = 2417},
1285 { .hw_value = 3, .center_freq = 2422},
1286 { .hw_value = 4, .center_freq = 2427},
1287 { .hw_value = 5, .center_freq = 2432},
1288 { .hw_value = 6, .center_freq = 2437},
1289 { .hw_value = 7, .center_freq = 2442},
1290 { .hw_value = 8, .center_freq = 2447},
1291 { .hw_value = 9, .center_freq = 2452},
1292 { .hw_value = 10, .center_freq = 2457},
1293 { .hw_value = 11, .center_freq = 2462},
1294 { .hw_value = 12, .center_freq = 2467},
1295 { .hw_value = 13, .center_freq = 2472},
1296 };
1297
1298 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1299 struct ieee80211_vif *vif, u16 queue,
1300 const struct ieee80211_tx_queue_params *params)
1301 {
1302 enum wl1251_acx_ps_scheme ps_scheme;
1303 struct wl1251 *wl = hw->priv;
1304 int ret;
1305
1306 mutex_lock(&wl->mutex);
1307
1308 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1309
1310 ret = wl1251_ps_elp_wakeup(wl);
1311 if (ret < 0)
1312 goto out;
1313
1314 /* mac80211 uses units of 32 usec */
1315 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1316 params->cw_min, params->cw_max,
1317 params->aifs, params->txop * 32);
1318 if (ret < 0)
1319 goto out_sleep;
1320
1321 if (params->uapsd)
1322 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1323 else
1324 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1325
1326 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1327 CHANNEL_TYPE_EDCF,
1328 wl1251_tx_get_queue(queue), ps_scheme,
1329 WL1251_ACX_ACK_POLICY_LEGACY);
1330 if (ret < 0)
1331 goto out_sleep;
1332
1333 out_sleep:
1334 wl1251_ps_elp_sleep(wl);
1335
1336 out:
1337 mutex_unlock(&wl->mutex);
1338
1339 return ret;
1340 }
1341
1342 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1343 struct survey_info *survey)
1344 {
1345 struct wl1251 *wl = hw->priv;
1346 struct ieee80211_conf *conf = &hw->conf;
1347
1348 if (idx != 0)
1349 return -ENOENT;
1350
1351 survey->channel = conf->chandef.chan;
1352 survey->filled = SURVEY_INFO_NOISE_DBM;
1353 survey->noise = wl->noise;
1354
1355 return 0;
1356 }
1357
1358 /* can't be const, mac80211 writes to this */
1359 static struct ieee80211_supported_band wl1251_band_2ghz = {
1360 .channels = wl1251_channels,
1361 .n_channels = ARRAY_SIZE(wl1251_channels),
1362 .bitrates = wl1251_rates,
1363 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1364 };
1365
1366 static const struct ieee80211_ops wl1251_ops = {
1367 .start = wl1251_op_start,
1368 .stop = wl1251_op_stop,
1369 .add_interface = wl1251_op_add_interface,
1370 .remove_interface = wl1251_op_remove_interface,
1371 .config = wl1251_op_config,
1372 .prepare_multicast = wl1251_op_prepare_multicast,
1373 .configure_filter = wl1251_op_configure_filter,
1374 .tx = wl1251_op_tx,
1375 .set_key = wl1251_op_set_key,
1376 .hw_scan = wl1251_op_hw_scan,
1377 .bss_info_changed = wl1251_op_bss_info_changed,
1378 .set_rts_threshold = wl1251_op_set_rts_threshold,
1379 .conf_tx = wl1251_op_conf_tx,
1380 .get_survey = wl1251_op_get_survey,
1381 };
1382
1383 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1384 {
1385 unsigned long timeout;
1386
1387 wl1251_reg_write32(wl, EE_ADDR, offset);
1388 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1389
1390 /* EE_CTL_READ clears when data is ready */
1391 timeout = jiffies + msecs_to_jiffies(100);
1392 while (1) {
1393 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1394 break;
1395
1396 if (time_after(jiffies, timeout))
1397 return -ETIMEDOUT;
1398
1399 msleep(1);
1400 }
1401
1402 *data = wl1251_reg_read32(wl, EE_DATA);
1403 return 0;
1404 }
1405
1406 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1407 u8 *data, size_t len)
1408 {
1409 size_t i;
1410 int ret;
1411
1412 wl1251_reg_write32(wl, EE_START, 0);
1413
1414 for (i = 0; i < len; i++) {
1415 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1416 if (ret < 0)
1417 return ret;
1418 }
1419
1420 return 0;
1421 }
1422
1423 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1424 {
1425 u8 mac[ETH_ALEN];
1426 int i, ret;
1427
1428 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1429
1430 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1431 if (ret < 0) {
1432 wl1251_warning("failed to read MAC address from EEPROM");
1433 return ret;
1434 }
1435
1436 /* MAC is stored in reverse order */
1437 for (i = 0; i < ETH_ALEN; i++)
1438 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1439
1440 return 0;
1441 }
1442
1443 #define NVS_OFF_MAC_LEN 0x19
1444 #define NVS_OFF_MAC_ADDR_LO 0x1a
1445 #define NVS_OFF_MAC_ADDR_HI 0x1b
1446 #define NVS_OFF_MAC_DATA 0x1c
1447
1448 static int wl1251_check_nvs_mac(struct wl1251 *wl)
1449 {
1450 if (wl->nvs_len < 0x24)
1451 return -ENODATA;
1452
1453 /* length is 2 and data address is 0x546c (ANDed with 0xfffe) */
1454 if (wl->nvs[NVS_OFF_MAC_LEN] != 2 ||
1455 wl->nvs[NVS_OFF_MAC_ADDR_LO] != 0x6d ||
1456 wl->nvs[NVS_OFF_MAC_ADDR_HI] != 0x54)
1457 return -EINVAL;
1458
1459 return 0;
1460 }
1461
1462 static int wl1251_read_nvs_mac(struct wl1251 *wl)
1463 {
1464 u8 mac[ETH_ALEN];
1465 int i, ret;
1466
1467 ret = wl1251_check_nvs_mac(wl);
1468 if (ret)
1469 return ret;
1470
1471 /* MAC is stored in reverse order */
1472 for (i = 0; i < ETH_ALEN; i++)
1473 mac[i] = wl->nvs[NVS_OFF_MAC_DATA + ETH_ALEN - i - 1];
1474
1475 /* 00:00:20:07:03:09 is in example file wl1251-nvs.bin, so invalid */
1476 if (ether_addr_equal_unaligned(mac, "\x00\x00\x20\x07\x03\x09"))
1477 return -EINVAL;
1478
1479 memcpy(wl->mac_addr, mac, ETH_ALEN);
1480 return 0;
1481 }
1482
1483 static int wl1251_write_nvs_mac(struct wl1251 *wl)
1484 {
1485 int i, ret;
1486
1487 ret = wl1251_check_nvs_mac(wl);
1488 if (ret)
1489 return ret;
1490
1491 /* MAC is stored in reverse order */
1492 for (i = 0; i < ETH_ALEN; i++)
1493 wl->nvs[NVS_OFF_MAC_DATA + i] = wl->mac_addr[ETH_ALEN - i - 1];
1494
1495 return 0;
1496 }
1497
1498 static int wl1251_register_hw(struct wl1251 *wl)
1499 {
1500 int ret;
1501
1502 if (wl->mac80211_registered)
1503 return 0;
1504
1505 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1506
1507 ret = ieee80211_register_hw(wl->hw);
1508 if (ret < 0) {
1509 wl1251_error("unable to register mac80211 hw: %d", ret);
1510 return ret;
1511 }
1512
1513 wl->mac80211_registered = true;
1514
1515 wl1251_notice("loaded");
1516
1517 return 0;
1518 }
1519
1520 int wl1251_init_ieee80211(struct wl1251 *wl)
1521 {
1522 int ret;
1523
1524 /* The tx descriptor buffer and the TKIP space */
1525 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1526 + WL1251_TKIP_IV_SPACE;
1527
1528 /* unit us */
1529 /* FIXME: find a proper value */
1530
1531 ieee80211_hw_set(wl->hw, SIGNAL_DBM);
1532 ieee80211_hw_set(wl->hw, SUPPORTS_PS);
1533
1534 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1535 BIT(NL80211_IFTYPE_ADHOC);
1536 wl->hw->wiphy->max_scan_ssids = 1;
1537 wl->hw->wiphy->bands[NL80211_BAND_2GHZ] = &wl1251_band_2ghz;
1538
1539 wl->hw->queues = 4;
1540
1541 if (wl->nvs == NULL && !wl->use_eeprom) {
1542 ret = wl1251_fetch_nvs(wl);
1543 if (ret < 0)
1544 goto out;
1545 }
1546
1547 if (wl->use_eeprom)
1548 ret = wl1251_read_eeprom_mac(wl);
1549 else
1550 ret = wl1251_read_nvs_mac(wl);
1551
1552 if (ret == 0 && !is_valid_ether_addr(wl->mac_addr))
1553 ret = -EINVAL;
1554
1555 if (ret < 0) {
1556 /*
1557 * In case our MAC address is not correctly set,
1558 * we use a random but Nokia MAC.
1559 */
1560 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1561 memcpy(wl->mac_addr, nokia_oui, 3);
1562 get_random_bytes(wl->mac_addr + 3, 3);
1563 if (!wl->use_eeprom)
1564 wl1251_write_nvs_mac(wl);
1565 wl1251_warning("MAC address in eeprom or nvs data is not valid");
1566 wl1251_warning("Setting random MAC address: %pM", wl->mac_addr);
1567 }
1568
1569 ret = wl1251_register_hw(wl);
1570 if (ret)
1571 goto out;
1572
1573 wl1251_debugfs_init(wl);
1574 wl1251_notice("initialized");
1575
1576 ret = 0;
1577
1578 out:
1579 return ret;
1580 }
1581 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1582
1583 struct ieee80211_hw *wl1251_alloc_hw(void)
1584 {
1585 struct ieee80211_hw *hw;
1586 struct wl1251 *wl;
1587 int i;
1588
1589 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1590 if (!hw) {
1591 wl1251_error("could not alloc ieee80211_hw");
1592 return ERR_PTR(-ENOMEM);
1593 }
1594
1595 wl = hw->priv;
1596 memset(wl, 0, sizeof(*wl));
1597
1598 wl->hw = hw;
1599
1600 wl->data_in_count = 0;
1601
1602 skb_queue_head_init(&wl->tx_queue);
1603
1604 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1605 wl->channel = WL1251_DEFAULT_CHANNEL;
1606 wl->monitor_present = false;
1607 wl->joined = false;
1608 wl->scanning = false;
1609 wl->bss_type = MAX_BSS_TYPE;
1610 wl->default_key = 0;
1611 wl->listen_int = 1;
1612 wl->rx_counter = 0;
1613 wl->rx_handled = 0;
1614 wl->rx_current_buffer = 0;
1615 wl->rx_last_id = 0;
1616 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1617 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1618 wl->elp = false;
1619 wl->station_mode = STATION_ACTIVE_MODE;
1620 wl->psm_requested = false;
1621 wl->psm_entry_retry = 0;
1622 wl->tx_queue_stopped = false;
1623 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1624 wl->rssi_thold = 0;
1625 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1626 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1627 wl->vif = NULL;
1628
1629 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1630 wl->tx_frames[i] = NULL;
1631
1632 wl->next_tx_complete = 0;
1633
1634 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1635 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1636
1637 wl->state = WL1251_STATE_OFF;
1638 mutex_init(&wl->mutex);
1639 spin_lock_init(&wl->wl_lock);
1640
1641 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1642 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1643
1644 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1645 if (!wl->rx_descriptor) {
1646 wl1251_error("could not allocate memory for rx descriptor");
1647 ieee80211_free_hw(hw);
1648 return ERR_PTR(-ENOMEM);
1649 }
1650
1651 return hw;
1652 }
1653 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1654
1655 int wl1251_free_hw(struct wl1251 *wl)
1656 {
1657 ieee80211_unregister_hw(wl->hw);
1658
1659 wl1251_debugfs_exit(wl);
1660
1661 kfree(wl->target_mem_map);
1662 kfree(wl->data_path);
1663 vfree(wl->fw);
1664 wl->fw = NULL;
1665 kfree(wl->nvs);
1666 wl->nvs = NULL;
1667
1668 kfree(wl->rx_descriptor);
1669 wl->rx_descriptor = NULL;
1670
1671 ieee80211_free_hw(wl->hw);
1672
1673 return 0;
1674 }
1675 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1676
1677 MODULE_DESCRIPTION("TI wl1251 Wireless LAN Driver Core");
1678 MODULE_LICENSE("GPL");
1679 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1680 MODULE_FIRMWARE(WL1251_FW_NAME);
1681 MODULE_FIRMWARE(WL1251_NVS_NAME);
Linux with added FPC-III support