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fix a kmap leak in virtio_console
[linux/fpc-iii.git] / drivers / net / wireless / ti / wl1251 / main.c
blob757e25784a8a22f503b3483c0b55cedca5a05d3f
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 memset(wl->bssid, 0, ETH_ALEN);
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_CQM_RSSI;
504
505 wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
506 vif->type, vif->addr);
507
508 mutex_lock(&wl->mutex);
509 if (wl->vif) {
510 ret = -EBUSY;
511 goto out;
512 }
513
514 wl->vif = vif;
515
516 switch (vif->type) {
517 case NL80211_IFTYPE_STATION:
518 wl->bss_type = BSS_TYPE_STA_BSS;
519 break;
520 case NL80211_IFTYPE_ADHOC:
521 wl->bss_type = BSS_TYPE_IBSS;
522 break;
523 default:
524 ret = -EOPNOTSUPP;
525 goto out;
526 }
527
528 if (!ether_addr_equal_unaligned(wl->mac_addr, vif->addr)) {
529 memcpy(wl->mac_addr, vif->addr, ETH_ALEN);
530 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
531 ret = wl1251_acx_station_id(wl);
532 if (ret < 0)
533 goto out;
534 }
535
536 out:
537 mutex_unlock(&wl->mutex);
538 return ret;
539 }
540
541 static void wl1251_op_remove_interface(struct ieee80211_hw *hw,
542 struct ieee80211_vif *vif)
543 {
544 struct wl1251 *wl = hw->priv;
545
546 mutex_lock(&wl->mutex);
547 wl1251_debug(DEBUG_MAC80211, "mac80211 remove interface");
548 wl->vif = NULL;
549 memset(wl->bssid, 0, ETH_ALEN);
550 mutex_unlock(&wl->mutex);
551 }
552
553 static int wl1251_build_qos_null_data(struct wl1251 *wl)
554 {
555 struct ieee80211_qos_hdr template;
556
557 memset(&template, 0, sizeof(template));
558
559 memcpy(template.addr1, wl->bssid, ETH_ALEN);
560 memcpy(template.addr2, wl->mac_addr, ETH_ALEN);
561 memcpy(template.addr3, wl->bssid, ETH_ALEN);
562
563 template.frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
564 IEEE80211_STYPE_QOS_NULLFUNC |
565 IEEE80211_FCTL_TODS);
566
567 /* FIXME: not sure what priority to use here */
568 template.qos_ctrl = cpu_to_le16(0);
569
570 return wl1251_cmd_template_set(wl, CMD_QOS_NULL_DATA, &template,
571 sizeof(template));
572 }
573
574 static bool wl1251_can_do_pm(struct ieee80211_conf *conf, struct wl1251 *wl)
575 {
576 return (conf->flags & IEEE80211_CONF_PS) && !wl->monitor_present;
577 }
578
579 static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
580 {
581 struct wl1251 *wl = hw->priv;
582 struct ieee80211_conf *conf = &hw->conf;
583 int channel, ret = 0;
584
585 channel = ieee80211_frequency_to_channel(
586 conf->chandef.chan->center_freq);
587
588 wl1251_debug(DEBUG_MAC80211,
589 "mac80211 config ch %d monitor %s psm %s power %d",
590 channel,
591 conf->flags & IEEE80211_CONF_MONITOR ? "on" : "off",
592 conf->flags & IEEE80211_CONF_PS ? "on" : "off",
593 conf->power_level);
594
595 mutex_lock(&wl->mutex);
596
597 ret = wl1251_ps_elp_wakeup(wl);
598 if (ret < 0)
599 goto out;
600
601 if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
602 u32 mode;
603
604 if (conf->flags & IEEE80211_CONF_MONITOR) {
605 wl->monitor_present = true;
606 mode = DF_SNIFF_MODE_ENABLE | DF_ENCRYPTION_DISABLE;
607 } else {
608 wl->monitor_present = false;
609 mode = 0;
610 }
611
612 ret = wl1251_acx_feature_cfg(wl, mode);
613 if (ret < 0)
614 goto out_sleep;
615 }
616
617 if (channel != wl->channel) {
618 wl->channel = channel;
619
620 /*
621 * Use ENABLE_RX command for channel switching when no
622 * interface is present (monitor mode only).
623 * This leaves the tx path disabled in firmware, whereas
624 * the usual JOIN command seems to transmit some frames
625 * at firmware level.
626 */
627 if (wl->vif == NULL) {
628 wl->joined = false;
629 ret = wl1251_cmd_data_path_rx(wl, wl->channel, 1);
630 } else {
631 ret = wl1251_join(wl, wl->bss_type, wl->channel,
632 wl->beacon_int, wl->dtim_period);
633 }
634 if (ret < 0)
635 goto out_sleep;
636 }
637
638 if (wl1251_can_do_pm(conf, wl) && !wl->psm_requested) {
639 wl1251_debug(DEBUG_PSM, "psm enabled");
640
641 wl->psm_requested = true;
642
643 wl->dtim_period = conf->ps_dtim_period;
644
645 ret = wl1251_acx_wr_tbtt_and_dtim(wl, wl->beacon_int,
646 wl->dtim_period);
647
648 /*
649 * mac80211 enables PSM only if we're already associated.
650 */
651 ret = wl1251_ps_set_mode(wl, STATION_POWER_SAVE_MODE);
652 if (ret < 0)
653 goto out_sleep;
654 } else if (!wl1251_can_do_pm(conf, wl) && wl->psm_requested) {
655 wl1251_debug(DEBUG_PSM, "psm disabled");
656
657 wl->psm_requested = false;
658
659 if (wl->station_mode != STATION_ACTIVE_MODE) {
660 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
661 if (ret < 0)
662 goto out_sleep;
663 }
664 }
665
666 if (changed & IEEE80211_CONF_CHANGE_IDLE && !wl->scanning) {
667 if (conf->flags & IEEE80211_CONF_IDLE) {
668 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
669 if (ret < 0)
670 goto out_sleep;
671 } else {
672 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
673 if (ret < 0)
674 goto out_sleep;
675 ret = wl1251_join(wl, wl->bss_type, wl->channel,
676 wl->beacon_int, wl->dtim_period);
677 if (ret < 0)
678 goto out_sleep;
679 }
680 }
681
682 if (conf->power_level != wl->power_level) {
683 ret = wl1251_acx_tx_power(wl, conf->power_level);
684 if (ret < 0)
685 goto out_sleep;
686
687 wl->power_level = conf->power_level;
688 }
689
690 /*
691 * Tell stack that connection is lost because hw encryption isn't
692 * supported in monitor mode.
693 * This requires temporary enabling of the hw connection monitor flag
694 */
695 if ((changed & IEEE80211_CONF_CHANGE_MONITOR) && wl->vif) {
696 wl->hw->flags |= IEEE80211_HW_CONNECTION_MONITOR;
697 ieee80211_connection_loss(wl->vif);
698 }
699
700 out_sleep:
701 wl1251_ps_elp_sleep(wl);
702
703 out:
704 mutex_unlock(&wl->mutex);
705
706 return ret;
707 }
708
709 struct wl1251_filter_params {
710 bool enabled;
711 int mc_list_length;
712 u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
713 };
714
715 static u64 wl1251_op_prepare_multicast(struct ieee80211_hw *hw,
716 struct netdev_hw_addr_list *mc_list)
717 {
718 struct wl1251_filter_params *fp;
719 struct netdev_hw_addr *ha;
720 struct wl1251 *wl = hw->priv;
721
722 if (unlikely(wl->state == WL1251_STATE_OFF))
723 return 0;
724
725 fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
726 if (!fp) {
727 wl1251_error("Out of memory setting filters.");
728 return 0;
729 }
730
731 /* update multicast filtering parameters */
732 fp->mc_list_length = 0;
733 if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
734 fp->enabled = false;
735 } else {
736 fp->enabled = true;
737 netdev_hw_addr_list_for_each(ha, mc_list) {
738 memcpy(fp->mc_list[fp->mc_list_length],
739 ha->addr, ETH_ALEN);
740 fp->mc_list_length++;
741 }
742 }
743
744 return (u64)(unsigned long)fp;
745 }
746
747 #define WL1251_SUPPORTED_FILTERS (FIF_PROMISC_IN_BSS | \
748 FIF_ALLMULTI | \
749 FIF_FCSFAIL | \
750 FIF_BCN_PRBRESP_PROMISC | \
751 FIF_CONTROL | \
752 FIF_OTHER_BSS | \
753 FIF_PROBE_REQ)
754
755 static void wl1251_op_configure_filter(struct ieee80211_hw *hw,
756 unsigned int changed,
757 unsigned int *total, u64 multicast)
758 {
759 struct wl1251_filter_params *fp = (void *)(unsigned long)multicast;
760 struct wl1251 *wl = hw->priv;
761 int ret;
762
763 wl1251_debug(DEBUG_MAC80211, "mac80211 configure filter");
764
765 *total &= WL1251_SUPPORTED_FILTERS;
766 changed &= WL1251_SUPPORTED_FILTERS;
767
768 if (changed == 0) {
769 /* no filters which we support changed */
770 kfree(fp);
771 return;
772 }
773
774 mutex_lock(&wl->mutex);
775
776 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
777 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
778
779 if (*total & FIF_PROMISC_IN_BSS) {
780 wl->rx_config |= CFG_BSSID_FILTER_EN;
781 wl->rx_config |= CFG_RX_ALL_GOOD;
782 }
783 if (*total & FIF_ALLMULTI)
784 /*
785 * CFG_MC_FILTER_EN in rx_config needs to be 0 to receive
786 * all multicast frames
787 */
788 wl->rx_config &= ~CFG_MC_FILTER_EN;
789 if (*total & FIF_FCSFAIL)
790 wl->rx_filter |= CFG_RX_FCS_ERROR;
791 if (*total & FIF_BCN_PRBRESP_PROMISC) {
792 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
793 wl->rx_config &= ~CFG_SSID_FILTER_EN;
794 }
795 if (*total & FIF_CONTROL)
796 wl->rx_filter |= CFG_RX_CTL_EN;
797 if (*total & FIF_OTHER_BSS || is_zero_ether_addr(wl->bssid))
798 wl->rx_config &= ~CFG_BSSID_FILTER_EN;
799 if (*total & FIF_PROBE_REQ)
800 wl->rx_filter |= CFG_RX_PREQ_EN;
801
802 if (wl->state == WL1251_STATE_OFF)
803 goto out;
804
805 ret = wl1251_ps_elp_wakeup(wl);
806 if (ret < 0)
807 goto out;
808
809 if (*total & FIF_ALLMULTI || *total & FIF_PROMISC_IN_BSS)
810 ret = wl1251_acx_group_address_tbl(wl, false, NULL, 0);
811 else if (fp)
812 ret = wl1251_acx_group_address_tbl(wl, fp->enabled,
813 fp->mc_list,
814 fp->mc_list_length);
815 if (ret < 0)
816 goto out;
817
818 /* send filters to firmware */
819 wl1251_acx_rx_config(wl, wl->rx_config, wl->rx_filter);
820
821 wl1251_ps_elp_sleep(wl);
822
823 out:
824 mutex_unlock(&wl->mutex);
825 kfree(fp);
826 }
827
828 /* HW encryption */
829 static int wl1251_set_key_type(struct wl1251 *wl,
830 struct wl1251_cmd_set_keys *key,
831 enum set_key_cmd cmd,
832 struct ieee80211_key_conf *mac80211_key,
833 const u8 *addr)
834 {
835 switch (mac80211_key->cipher) {
836 case WLAN_CIPHER_SUITE_WEP40:
837 case WLAN_CIPHER_SUITE_WEP104:
838 if (is_broadcast_ether_addr(addr))
839 key->key_type = KEY_WEP_DEFAULT;
840 else
841 key->key_type = KEY_WEP_ADDR;
842
843 mac80211_key->hw_key_idx = mac80211_key->keyidx;
844 break;
845 case WLAN_CIPHER_SUITE_TKIP:
846 if (is_broadcast_ether_addr(addr))
847 key->key_type = KEY_TKIP_MIC_GROUP;
848 else
849 key->key_type = KEY_TKIP_MIC_PAIRWISE;
850
851 mac80211_key->hw_key_idx = mac80211_key->keyidx;
852 break;
853 case WLAN_CIPHER_SUITE_CCMP:
854 if (is_broadcast_ether_addr(addr))
855 key->key_type = KEY_AES_GROUP;
856 else
857 key->key_type = KEY_AES_PAIRWISE;
858 mac80211_key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
859 break;
860 default:
861 wl1251_error("Unknown key cipher 0x%x", mac80211_key->cipher);
862 return -EOPNOTSUPP;
863 }
864
865 return 0;
866 }
867
868 static int wl1251_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
869 struct ieee80211_vif *vif,
870 struct ieee80211_sta *sta,
871 struct ieee80211_key_conf *key)
872 {
873 struct wl1251 *wl = hw->priv;
874 struct wl1251_cmd_set_keys *wl_cmd;
875 const u8 *addr;
876 int ret;
877
878 static const u8 bcast_addr[ETH_ALEN] =
879 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
880
881 wl1251_debug(DEBUG_MAC80211, "mac80211 set key");
882
883 wl_cmd = kzalloc(sizeof(*wl_cmd), GFP_KERNEL);
884 if (!wl_cmd) {
885 ret = -ENOMEM;
886 goto out;
887 }
888
889 addr = sta ? sta->addr : bcast_addr;
890
891 wl1251_debug(DEBUG_CRYPT, "CMD: 0x%x", cmd);
892 wl1251_dump(DEBUG_CRYPT, "ADDR: ", addr, ETH_ALEN);
893 wl1251_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
894 key->cipher, key->keyidx, key->keylen, key->flags);
895 wl1251_dump(DEBUG_CRYPT, "KEY: ", key->key, key->keylen);
896
897 if (is_zero_ether_addr(addr)) {
898 /* We dont support TX only encryption */
899 ret = -EOPNOTSUPP;
900 goto out;
901 }
902
903 mutex_lock(&wl->mutex);
904
905 switch (cmd) {
906 case SET_KEY:
907 if (wl->monitor_present) {
908 ret = -EOPNOTSUPP;
909 goto out_unlock;
910 }
911 wl_cmd->key_action = KEY_ADD_OR_REPLACE;
912 break;
913 case DISABLE_KEY:
914 wl_cmd->key_action = KEY_REMOVE;
915 break;
916 default:
917 wl1251_error("Unsupported key cmd 0x%x", cmd);
918 break;
919 }
920
921 ret = wl1251_ps_elp_wakeup(wl);
922 if (ret < 0)
923 goto out_unlock;
924
925 ret = wl1251_set_key_type(wl, wl_cmd, cmd, key, addr);
926 if (ret < 0) {
927 wl1251_error("Set KEY type failed");
928 goto out_sleep;
929 }
930
931 if (wl_cmd->key_type != KEY_WEP_DEFAULT)
932 memcpy(wl_cmd->addr, addr, ETH_ALEN);
933
934 if ((wl_cmd->key_type == KEY_TKIP_MIC_GROUP) ||
935 (wl_cmd->key_type == KEY_TKIP_MIC_PAIRWISE)) {
936 /*
937 * We get the key in the following form:
938 * TKIP (16 bytes) - TX MIC (8 bytes) - RX MIC (8 bytes)
939 * but the target is expecting:
940 * TKIP - RX MIC - TX MIC
941 */
942 memcpy(wl_cmd->key, key->key, 16);
943 memcpy(wl_cmd->key + 16, key->key + 24, 8);
944 memcpy(wl_cmd->key + 24, key->key + 16, 8);
945
946 } else {
947 memcpy(wl_cmd->key, key->key, key->keylen);
948 }
949 wl_cmd->key_size = key->keylen;
950
951 wl_cmd->id = key->keyidx;
952 wl_cmd->ssid_profile = 0;
953
954 wl1251_dump(DEBUG_CRYPT, "TARGET KEY: ", wl_cmd, sizeof(*wl_cmd));
955
956 ret = wl1251_cmd_send(wl, CMD_SET_KEYS, wl_cmd, sizeof(*wl_cmd));
957 if (ret < 0) {
958 wl1251_warning("could not set keys");
959 goto out_sleep;
960 }
961
962 out_sleep:
963 wl1251_ps_elp_sleep(wl);
964
965 out_unlock:
966 mutex_unlock(&wl->mutex);
967
968 out:
969 kfree(wl_cmd);
970
971 return ret;
972 }
973
974 static int wl1251_op_hw_scan(struct ieee80211_hw *hw,
975 struct ieee80211_vif *vif,
976 struct cfg80211_scan_request *req)
977 {
978 struct wl1251 *wl = hw->priv;
979 struct sk_buff *skb;
980 size_t ssid_len = 0;
981 u8 *ssid = NULL;
982 int ret;
983
984 wl1251_debug(DEBUG_MAC80211, "mac80211 hw scan");
985
986 if (req->n_ssids) {
987 ssid = req->ssids[0].ssid;
988 ssid_len = req->ssids[0].ssid_len;
989 }
990
991 mutex_lock(&wl->mutex);
992
993 if (wl->scanning) {
994 wl1251_debug(DEBUG_SCAN, "scan already in progress");
995 ret = -EINVAL;
996 goto out;
997 }
998
999 ret = wl1251_ps_elp_wakeup(wl);
1000 if (ret < 0)
1001 goto out;
1002
1003 if (hw->conf.flags & IEEE80211_CONF_IDLE) {
1004 ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
1005 if (ret < 0)
1006 goto out_sleep;
1007 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1008 wl->beacon_int, wl->dtim_period);
1009 if (ret < 0)
1010 goto out_sleep;
1011 }
1012
1013 skb = ieee80211_probereq_get(wl->hw, wl->vif, ssid, ssid_len,
1014 req->ie_len);
1015 if (!skb) {
1016 ret = -ENOMEM;
1017 goto out_idle;
1018 }
1019 if (req->ie_len)
1020 memcpy(skb_put(skb, req->ie_len), req->ie, req->ie_len);
1021
1022 ret = wl1251_cmd_template_set(wl, CMD_PROBE_REQ, skb->data,
1023 skb->len);
1024 dev_kfree_skb(skb);
1025 if (ret < 0)
1026 goto out_idle;
1027
1028 ret = wl1251_cmd_trigger_scan_to(wl, 0);
1029 if (ret < 0)
1030 goto out_idle;
1031
1032 wl->scanning = true;
1033
1034 ret = wl1251_cmd_scan(wl, ssid, ssid_len, req->channels,
1035 req->n_channels, WL1251_SCAN_NUM_PROBES);
1036 if (ret < 0) {
1037 wl1251_debug(DEBUG_SCAN, "scan failed %d", ret);
1038 wl->scanning = false;
1039 goto out_idle;
1040 }
1041 goto out_sleep;
1042
1043 out_idle:
1044 if (hw->conf.flags & IEEE80211_CONF_IDLE)
1045 ret = wl1251_ps_set_mode(wl, STATION_IDLE);
1046 out_sleep:
1047 wl1251_ps_elp_sleep(wl);
1048
1049 out:
1050 mutex_unlock(&wl->mutex);
1051
1052 return ret;
1053 }
1054
1055 static int wl1251_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1056 {
1057 struct wl1251 *wl = hw->priv;
1058 int ret;
1059
1060 mutex_lock(&wl->mutex);
1061
1062 ret = wl1251_ps_elp_wakeup(wl);
1063 if (ret < 0)
1064 goto out;
1065
1066 ret = wl1251_acx_rts_threshold(wl, (u16) value);
1067 if (ret < 0)
1068 wl1251_warning("wl1251_op_set_rts_threshold failed: %d", ret);
1069
1070 wl1251_ps_elp_sleep(wl);
1071
1072 out:
1073 mutex_unlock(&wl->mutex);
1074
1075 return ret;
1076 }
1077
1078 static void wl1251_op_bss_info_changed(struct ieee80211_hw *hw,
1079 struct ieee80211_vif *vif,
1080 struct ieee80211_bss_conf *bss_conf,
1081 u32 changed)
1082 {
1083 struct wl1251 *wl = hw->priv;
1084 struct sk_buff *beacon, *skb;
1085 bool enable;
1086 int ret;
1087
1088 wl1251_debug(DEBUG_MAC80211, "mac80211 bss info changed");
1089
1090 mutex_lock(&wl->mutex);
1091
1092 ret = wl1251_ps_elp_wakeup(wl);
1093 if (ret < 0)
1094 goto out;
1095
1096 if (changed & BSS_CHANGED_CQM) {
1097 ret = wl1251_acx_low_rssi(wl, bss_conf->cqm_rssi_thold,
1098 WL1251_DEFAULT_LOW_RSSI_WEIGHT,
1099 WL1251_DEFAULT_LOW_RSSI_DEPTH,
1100 WL1251_ACX_LOW_RSSI_TYPE_EDGE);
1101 if (ret < 0)
1102 goto out;
1103 wl->rssi_thold = bss_conf->cqm_rssi_thold;
1104 }
1105
1106 if (changed & BSS_CHANGED_BSSID) {
1107 memcpy(wl->bssid, bss_conf->bssid, ETH_ALEN);
1108
1109 skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
1110 if (!skb)
1111 goto out_sleep;
1112
1113 ret = wl1251_cmd_template_set(wl, CMD_NULL_DATA,
1114 skb->data, skb->len);
1115 dev_kfree_skb(skb);
1116 if (ret < 0)
1117 goto out_sleep;
1118
1119 ret = wl1251_build_qos_null_data(wl);
1120 if (ret < 0)
1121 goto out;
1122
1123 if (wl->bss_type != BSS_TYPE_IBSS) {
1124 ret = wl1251_join(wl, wl->bss_type, wl->channel,
1125 wl->beacon_int, wl->dtim_period);
1126 if (ret < 0)
1127 goto out_sleep;
1128 }
1129 }
1130
1131 if (changed & BSS_CHANGED_ASSOC) {
1132 /* Disable temporary enabled hw connection monitor flag */
1133 wl->hw->flags &= ~IEEE80211_HW_CONNECTION_MONITOR;
1134
1135 if (bss_conf->assoc) {
1136 wl->beacon_int = bss_conf->beacon_int;
1137
1138 skb = ieee80211_pspoll_get(wl->hw, wl->vif);
1139 if (!skb)
1140 goto out_sleep;
1141
1142 ret = wl1251_cmd_template_set(wl, CMD_PS_POLL,
1143 skb->data,
1144 skb->len);
1145 dev_kfree_skb(skb);
1146 if (ret < 0)
1147 goto out_sleep;
1148
1149 ret = wl1251_acx_aid(wl, bss_conf->aid);
1150 if (ret < 0)
1151 goto out_sleep;
1152 } else {
1153 /* use defaults when not associated */
1154 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1155 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1156 }
1157 }
1158 if (changed & BSS_CHANGED_ERP_SLOT) {
1159 if (bss_conf->use_short_slot)
1160 ret = wl1251_acx_slot(wl, SLOT_TIME_SHORT);
1161 else
1162 ret = wl1251_acx_slot(wl, SLOT_TIME_LONG);
1163 if (ret < 0) {
1164 wl1251_warning("Set slot time failed %d", ret);
1165 goto out_sleep;
1166 }
1167 }
1168
1169 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
1170 if (bss_conf->use_short_preamble)
1171 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_SHORT);
1172 else
1173 wl1251_acx_set_preamble(wl, ACX_PREAMBLE_LONG);
1174 }
1175
1176 if (changed & BSS_CHANGED_ERP_CTS_PROT) {
1177 if (bss_conf->use_cts_prot)
1178 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_ENABLE);
1179 else
1180 ret = wl1251_acx_cts_protect(wl, CTSPROTECT_DISABLE);
1181 if (ret < 0) {
1182 wl1251_warning("Set ctsprotect failed %d", ret);
1183 goto out_sleep;
1184 }
1185 }
1186
1187 if (changed & BSS_CHANGED_ARP_FILTER) {
1188 __be32 addr = bss_conf->arp_addr_list[0];
1189 WARN_ON(wl->bss_type != BSS_TYPE_STA_BSS);
1190
1191 enable = bss_conf->arp_addr_cnt == 1 && bss_conf->assoc;
1192 wl1251_acx_arp_ip_filter(wl, enable, addr);
1193
1194 if (ret < 0)
1195 goto out_sleep;
1196 }
1197
1198 if (changed & BSS_CHANGED_BEACON) {
1199 beacon = ieee80211_beacon_get(hw, vif);
1200 if (!beacon)
1201 goto out_sleep;
1202
1203 ret = wl1251_cmd_template_set(wl, CMD_BEACON, beacon->data,
1204 beacon->len);
1205
1206 if (ret < 0) {
1207 dev_kfree_skb(beacon);
1208 goto out_sleep;
1209 }
1210
1211 ret = wl1251_cmd_template_set(wl, CMD_PROBE_RESP, beacon->data,
1212 beacon->len);
1213
1214 dev_kfree_skb(beacon);
1215
1216 if (ret < 0)
1217 goto out_sleep;
1218
1219 ret = wl1251_join(wl, wl->bss_type, wl->beacon_int,
1220 wl->channel, wl->dtim_period);
1221
1222 if (ret < 0)
1223 goto out_sleep;
1224 }
1225
1226 out_sleep:
1227 wl1251_ps_elp_sleep(wl);
1228
1229 out:
1230 mutex_unlock(&wl->mutex);
1231 }
1232
1233
1234 /* can't be const, mac80211 writes to this */
1235 static struct ieee80211_rate wl1251_rates[] = {
1236 { .bitrate = 10,
1237 .hw_value = 0x1,
1238 .hw_value_short = 0x1, },
1239 { .bitrate = 20,
1240 .hw_value = 0x2,
1241 .hw_value_short = 0x2,
1242 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1243 { .bitrate = 55,
1244 .hw_value = 0x4,
1245 .hw_value_short = 0x4,
1246 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1247 { .bitrate = 110,
1248 .hw_value = 0x20,
1249 .hw_value_short = 0x20,
1250 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
1251 { .bitrate = 60,
1252 .hw_value = 0x8,
1253 .hw_value_short = 0x8, },
1254 { .bitrate = 90,
1255 .hw_value = 0x10,
1256 .hw_value_short = 0x10, },
1257 { .bitrate = 120,
1258 .hw_value = 0x40,
1259 .hw_value_short = 0x40, },
1260 { .bitrate = 180,
1261 .hw_value = 0x80,
1262 .hw_value_short = 0x80, },
1263 { .bitrate = 240,
1264 .hw_value = 0x200,
1265 .hw_value_short = 0x200, },
1266 { .bitrate = 360,
1267 .hw_value = 0x400,
1268 .hw_value_short = 0x400, },
1269 { .bitrate = 480,
1270 .hw_value = 0x800,
1271 .hw_value_short = 0x800, },
1272 { .bitrate = 540,
1273 .hw_value = 0x1000,
1274 .hw_value_short = 0x1000, },
1275 };
1276
1277 /* can't be const, mac80211 writes to this */
1278 static struct ieee80211_channel wl1251_channels[] = {
1279 { .hw_value = 1, .center_freq = 2412},
1280 { .hw_value = 2, .center_freq = 2417},
1281 { .hw_value = 3, .center_freq = 2422},
1282 { .hw_value = 4, .center_freq = 2427},
1283 { .hw_value = 5, .center_freq = 2432},
1284 { .hw_value = 6, .center_freq = 2437},
1285 { .hw_value = 7, .center_freq = 2442},
1286 { .hw_value = 8, .center_freq = 2447},
1287 { .hw_value = 9, .center_freq = 2452},
1288 { .hw_value = 10, .center_freq = 2457},
1289 { .hw_value = 11, .center_freq = 2462},
1290 { .hw_value = 12, .center_freq = 2467},
1291 { .hw_value = 13, .center_freq = 2472},
1292 };
1293
1294 static int wl1251_op_conf_tx(struct ieee80211_hw *hw,
1295 struct ieee80211_vif *vif, u16 queue,
1296 const struct ieee80211_tx_queue_params *params)
1297 {
1298 enum wl1251_acx_ps_scheme ps_scheme;
1299 struct wl1251 *wl = hw->priv;
1300 int ret;
1301
1302 mutex_lock(&wl->mutex);
1303
1304 wl1251_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
1305
1306 ret = wl1251_ps_elp_wakeup(wl);
1307 if (ret < 0)
1308 goto out;
1309
1310 /* mac80211 uses units of 32 usec */
1311 ret = wl1251_acx_ac_cfg(wl, wl1251_tx_get_queue(queue),
1312 params->cw_min, params->cw_max,
1313 params->aifs, params->txop * 32);
1314 if (ret < 0)
1315 goto out_sleep;
1316
1317 if (params->uapsd)
1318 ps_scheme = WL1251_ACX_PS_SCHEME_UPSD_TRIGGER;
1319 else
1320 ps_scheme = WL1251_ACX_PS_SCHEME_LEGACY;
1321
1322 ret = wl1251_acx_tid_cfg(wl, wl1251_tx_get_queue(queue),
1323 CHANNEL_TYPE_EDCF,
1324 wl1251_tx_get_queue(queue), ps_scheme,
1325 WL1251_ACX_ACK_POLICY_LEGACY);
1326 if (ret < 0)
1327 goto out_sleep;
1328
1329 out_sleep:
1330 wl1251_ps_elp_sleep(wl);
1331
1332 out:
1333 mutex_unlock(&wl->mutex);
1334
1335 return ret;
1336 }
1337
1338 static int wl1251_op_get_survey(struct ieee80211_hw *hw, int idx,
1339 struct survey_info *survey)
1340 {
1341 struct wl1251 *wl = hw->priv;
1342 struct ieee80211_conf *conf = &hw->conf;
1343
1344 if (idx != 0)
1345 return -ENOENT;
1346
1347 survey->channel = conf->chandef.chan;
1348 survey->filled = SURVEY_INFO_NOISE_DBM;
1349 survey->noise = wl->noise;
1350
1351 return 0;
1352 }
1353
1354 /* can't be const, mac80211 writes to this */
1355 static struct ieee80211_supported_band wl1251_band_2ghz = {
1356 .channels = wl1251_channels,
1357 .n_channels = ARRAY_SIZE(wl1251_channels),
1358 .bitrates = wl1251_rates,
1359 .n_bitrates = ARRAY_SIZE(wl1251_rates),
1360 };
1361
1362 static const struct ieee80211_ops wl1251_ops = {
1363 .start = wl1251_op_start,
1364 .stop = wl1251_op_stop,
1365 .add_interface = wl1251_op_add_interface,
1366 .remove_interface = wl1251_op_remove_interface,
1367 .config = wl1251_op_config,
1368 .prepare_multicast = wl1251_op_prepare_multicast,
1369 .configure_filter = wl1251_op_configure_filter,
1370 .tx = wl1251_op_tx,
1371 .set_key = wl1251_op_set_key,
1372 .hw_scan = wl1251_op_hw_scan,
1373 .bss_info_changed = wl1251_op_bss_info_changed,
1374 .set_rts_threshold = wl1251_op_set_rts_threshold,
1375 .conf_tx = wl1251_op_conf_tx,
1376 .get_survey = wl1251_op_get_survey,
1377 };
1378
1379 static int wl1251_read_eeprom_byte(struct wl1251 *wl, off_t offset, u8 *data)
1380 {
1381 unsigned long timeout;
1382
1383 wl1251_reg_write32(wl, EE_ADDR, offset);
1384 wl1251_reg_write32(wl, EE_CTL, EE_CTL_READ);
1385
1386 /* EE_CTL_READ clears when data is ready */
1387 timeout = jiffies + msecs_to_jiffies(100);
1388 while (1) {
1389 if (!(wl1251_reg_read32(wl, EE_CTL) & EE_CTL_READ))
1390 break;
1391
1392 if (time_after(jiffies, timeout))
1393 return -ETIMEDOUT;
1394
1395 msleep(1);
1396 }
1397
1398 *data = wl1251_reg_read32(wl, EE_DATA);
1399 return 0;
1400 }
1401
1402 static int wl1251_read_eeprom(struct wl1251 *wl, off_t offset,
1403 u8 *data, size_t len)
1404 {
1405 size_t i;
1406 int ret;
1407
1408 wl1251_reg_write32(wl, EE_START, 0);
1409
1410 for (i = 0; i < len; i++) {
1411 ret = wl1251_read_eeprom_byte(wl, offset + i, &data[i]);
1412 if (ret < 0)
1413 return ret;
1414 }
1415
1416 return 0;
1417 }
1418
1419 static int wl1251_read_eeprom_mac(struct wl1251 *wl)
1420 {
1421 u8 mac[ETH_ALEN];
1422 int i, ret;
1423
1424 wl1251_set_partition(wl, 0, 0, REGISTERS_BASE, REGISTERS_DOWN_SIZE);
1425
1426 ret = wl1251_read_eeprom(wl, 0x1c, mac, sizeof(mac));
1427 if (ret < 0) {
1428 wl1251_warning("failed to read MAC address from EEPROM");
1429 return ret;
1430 }
1431
1432 /* MAC is stored in reverse order */
1433 for (i = 0; i < ETH_ALEN; i++)
1434 wl->mac_addr[i] = mac[ETH_ALEN - i - 1];
1435
1436 return 0;
1437 }
1438
1439 static int wl1251_register_hw(struct wl1251 *wl)
1440 {
1441 int ret;
1442
1443 if (wl->mac80211_registered)
1444 return 0;
1445
1446 SET_IEEE80211_PERM_ADDR(wl->hw, wl->mac_addr);
1447
1448 ret = ieee80211_register_hw(wl->hw);
1449 if (ret < 0) {
1450 wl1251_error("unable to register mac80211 hw: %d", ret);
1451 return ret;
1452 }
1453
1454 wl->mac80211_registered = true;
1455
1456 wl1251_notice("loaded");
1457
1458 return 0;
1459 }
1460
1461 int wl1251_init_ieee80211(struct wl1251 *wl)
1462 {
1463 int ret;
1464
1465 /* The tx descriptor buffer and the TKIP space */
1466 wl->hw->extra_tx_headroom = sizeof(struct tx_double_buffer_desc)
1467 + WL1251_TKIP_IV_SPACE;
1468
1469 /* unit us */
1470 /* FIXME: find a proper value */
1471
1472 wl->hw->flags = IEEE80211_HW_SIGNAL_DBM |
1473 IEEE80211_HW_SUPPORTS_PS |
1474 IEEE80211_HW_SUPPORTS_UAPSD;
1475
1476 wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1477 BIT(NL80211_IFTYPE_ADHOC);
1478 wl->hw->wiphy->max_scan_ssids = 1;
1479 wl->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &wl1251_band_2ghz;
1480
1481 wl->hw->queues = 4;
1482
1483 if (wl->use_eeprom)
1484 wl1251_read_eeprom_mac(wl);
1485
1486 ret = wl1251_register_hw(wl);
1487 if (ret)
1488 goto out;
1489
1490 wl1251_debugfs_init(wl);
1491 wl1251_notice("initialized");
1492
1493 ret = 0;
1494
1495 out:
1496 return ret;
1497 }
1498 EXPORT_SYMBOL_GPL(wl1251_init_ieee80211);
1499
1500 struct ieee80211_hw *wl1251_alloc_hw(void)
1501 {
1502 struct ieee80211_hw *hw;
1503 struct wl1251 *wl;
1504 int i;
1505 static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
1506
1507 hw = ieee80211_alloc_hw(sizeof(*wl), &wl1251_ops);
1508 if (!hw) {
1509 wl1251_error("could not alloc ieee80211_hw");
1510 return ERR_PTR(-ENOMEM);
1511 }
1512
1513 wl = hw->priv;
1514 memset(wl, 0, sizeof(*wl));
1515
1516 wl->hw = hw;
1517
1518 wl->data_in_count = 0;
1519
1520 skb_queue_head_init(&wl->tx_queue);
1521
1522 INIT_DELAYED_WORK(&wl->elp_work, wl1251_elp_work);
1523 wl->channel = WL1251_DEFAULT_CHANNEL;
1524 wl->monitor_present = false;
1525 wl->joined = false;
1526 wl->scanning = false;
1527 wl->bss_type = MAX_BSS_TYPE;
1528 wl->default_key = 0;
1529 wl->listen_int = 1;
1530 wl->rx_counter = 0;
1531 wl->rx_handled = 0;
1532 wl->rx_current_buffer = 0;
1533 wl->rx_last_id = 0;
1534 wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
1535 wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
1536 wl->elp = false;
1537 wl->station_mode = STATION_ACTIVE_MODE;
1538 wl->psm_requested = false;
1539 wl->psm_entry_retry = 0;
1540 wl->tx_queue_stopped = false;
1541 wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
1542 wl->rssi_thold = 0;
1543 wl->beacon_int = WL1251_DEFAULT_BEACON_INT;
1544 wl->dtim_period = WL1251_DEFAULT_DTIM_PERIOD;
1545 wl->vif = NULL;
1546
1547 for (i = 0; i < FW_TX_CMPLT_BLOCK_SIZE; i++)
1548 wl->tx_frames[i] = NULL;
1549
1550 wl->next_tx_complete = 0;
1551
1552 INIT_WORK(&wl->irq_work, wl1251_irq_work);
1553 INIT_WORK(&wl->tx_work, wl1251_tx_work);
1554
1555 /*
1556 * In case our MAC address is not correctly set,
1557 * we use a random but Nokia MAC.
1558 */
1559 memcpy(wl->mac_addr, nokia_oui, 3);
1560 get_random_bytes(wl->mac_addr + 3, 3);
1561
1562 wl->state = WL1251_STATE_OFF;
1563 mutex_init(&wl->mutex);
1564
1565 wl->tx_mgmt_frm_rate = DEFAULT_HW_GEN_TX_RATE;
1566 wl->tx_mgmt_frm_mod = DEFAULT_HW_GEN_MODULATION_TYPE;
1567
1568 wl->rx_descriptor = kmalloc(sizeof(*wl->rx_descriptor), GFP_KERNEL);
1569 if (!wl->rx_descriptor) {
1570 wl1251_error("could not allocate memory for rx descriptor");
1571 ieee80211_free_hw(hw);
1572 return ERR_PTR(-ENOMEM);
1573 }
1574
1575 return hw;
1576 }
1577 EXPORT_SYMBOL_GPL(wl1251_alloc_hw);
1578
1579 int wl1251_free_hw(struct wl1251 *wl)
1580 {
1581 ieee80211_unregister_hw(wl->hw);
1582
1583 wl1251_debugfs_exit(wl);
1584
1585 kfree(wl->target_mem_map);
1586 kfree(wl->data_path);
1587 vfree(wl->fw);
1588 wl->fw = NULL;
1589 kfree(wl->nvs);
1590 wl->nvs = NULL;
1591
1592 kfree(wl->rx_descriptor);
1593 wl->rx_descriptor = NULL;
1594
1595 ieee80211_free_hw(wl->hw);
1596
1597 return 0;
1598 }
1599 EXPORT_SYMBOL_GPL(wl1251_free_hw);
1600
1601 MODULE_DESCRIPTION("TI wl1251 Wireles LAN Driver Core");
1602 MODULE_LICENSE("GPL");
1603 MODULE_AUTHOR("Kalle Valo <kvalo@adurom.com>");
1604 MODULE_FIRMWARE(WL1251_FW_NAME);
1605 MODULE_FIRMWARE(WL1251_NVS_NAME);
Linux with added FPC-III support