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fe8ee9ad CL |
1 | /* |
2 | * Atheros CARL9170 driver | |
3 | * | |
4 | * mac80211 interaction code | |
5 | * | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; see the file COPYING. If not, see | |
21 | * http://www.gnu.org/licenses/. | |
22 | * | |
23 | * This file incorporates work covered by the following copyright and | |
24 | * permission notice: | |
25 | * Copyright (c) 2007-2008 Atheros Communications, Inc. | |
26 | * | |
27 | * Permission to use, copy, modify, and/or distribute this software for any | |
28 | * purpose with or without fee is hereby granted, provided that the above | |
29 | * copyright notice and this permission notice appear in all copies. | |
30 | * | |
31 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
32 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
33 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
34 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
35 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
36 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
37 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
38 | */ | |
39 | ||
40 | #include <linux/init.h> | |
41 | #include <linux/slab.h> | |
42 | #include <linux/module.h> | |
43 | #include <linux/etherdevice.h> | |
44 | #include <linux/random.h> | |
45 | #include <net/mac80211.h> | |
46 | #include <net/cfg80211.h> | |
47 | #include "hw.h" | |
48 | #include "carl9170.h" | |
49 | #include "cmd.h" | |
50 | ||
51 | static int modparam_nohwcrypt; | |
52 | module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); | |
53 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware crypto offload."); | |
54 | ||
55 | int modparam_noht; | |
56 | module_param_named(noht, modparam_noht, int, S_IRUGO); | |
57 | MODULE_PARM_DESC(noht, "Disable MPDU aggregation."); | |
58 | ||
59 | #define RATE(_bitrate, _hw_rate, _txpidx, _flags) { \ | |
60 | .bitrate = (_bitrate), \ | |
61 | .flags = (_flags), \ | |
62 | .hw_value = (_hw_rate) | (_txpidx) << 4, \ | |
63 | } | |
64 | ||
65 | struct ieee80211_rate __carl9170_ratetable[] = { | |
66 | RATE(10, 0, 0, 0), | |
67 | RATE(20, 1, 1, IEEE80211_RATE_SHORT_PREAMBLE), | |
68 | RATE(55, 2, 2, IEEE80211_RATE_SHORT_PREAMBLE), | |
69 | RATE(110, 3, 3, IEEE80211_RATE_SHORT_PREAMBLE), | |
70 | RATE(60, 0xb, 0, 0), | |
71 | RATE(90, 0xf, 0, 0), | |
72 | RATE(120, 0xa, 0, 0), | |
73 | RATE(180, 0xe, 0, 0), | |
74 | RATE(240, 0x9, 0, 0), | |
75 | RATE(360, 0xd, 1, 0), | |
76 | RATE(480, 0x8, 2, 0), | |
77 | RATE(540, 0xc, 3, 0), | |
78 | }; | |
79 | #undef RATE | |
80 | ||
81 | #define carl9170_g_ratetable (__carl9170_ratetable + 0) | |
82 | #define carl9170_g_ratetable_size 12 | |
83 | #define carl9170_a_ratetable (__carl9170_ratetable + 4) | |
84 | #define carl9170_a_ratetable_size 8 | |
85 | ||
86 | /* | |
87 | * NB: The hw_value is used as an index into the carl9170_phy_freq_params | |
88 | * array in phy.c so that we don't have to do frequency lookups! | |
89 | */ | |
90 | #define CHAN(_freq, _idx) { \ | |
91 | .center_freq = (_freq), \ | |
92 | .hw_value = (_idx), \ | |
93 | .max_power = 18, /* XXX */ \ | |
94 | } | |
95 | ||
96 | static struct ieee80211_channel carl9170_2ghz_chantable[] = { | |
97 | CHAN(2412, 0), | |
98 | CHAN(2417, 1), | |
99 | CHAN(2422, 2), | |
100 | CHAN(2427, 3), | |
101 | CHAN(2432, 4), | |
102 | CHAN(2437, 5), | |
103 | CHAN(2442, 6), | |
104 | CHAN(2447, 7), | |
105 | CHAN(2452, 8), | |
106 | CHAN(2457, 9), | |
107 | CHAN(2462, 10), | |
108 | CHAN(2467, 11), | |
109 | CHAN(2472, 12), | |
110 | CHAN(2484, 13), | |
111 | }; | |
112 | ||
113 | static struct ieee80211_channel carl9170_5ghz_chantable[] = { | |
114 | CHAN(4920, 14), | |
115 | CHAN(4940, 15), | |
116 | CHAN(4960, 16), | |
117 | CHAN(4980, 17), | |
118 | CHAN(5040, 18), | |
119 | CHAN(5060, 19), | |
120 | CHAN(5080, 20), | |
121 | CHAN(5180, 21), | |
122 | CHAN(5200, 22), | |
123 | CHAN(5220, 23), | |
124 | CHAN(5240, 24), | |
125 | CHAN(5260, 25), | |
126 | CHAN(5280, 26), | |
127 | CHAN(5300, 27), | |
128 | CHAN(5320, 28), | |
129 | CHAN(5500, 29), | |
130 | CHAN(5520, 30), | |
131 | CHAN(5540, 31), | |
132 | CHAN(5560, 32), | |
133 | CHAN(5580, 33), | |
134 | CHAN(5600, 34), | |
135 | CHAN(5620, 35), | |
136 | CHAN(5640, 36), | |
137 | CHAN(5660, 37), | |
138 | CHAN(5680, 38), | |
139 | CHAN(5700, 39), | |
140 | CHAN(5745, 40), | |
141 | CHAN(5765, 41), | |
142 | CHAN(5785, 42), | |
143 | CHAN(5805, 43), | |
144 | CHAN(5825, 44), | |
145 | CHAN(5170, 45), | |
146 | CHAN(5190, 46), | |
147 | CHAN(5210, 47), | |
148 | CHAN(5230, 48), | |
149 | }; | |
150 | #undef CHAN | |
151 | ||
152 | #define CARL9170_HT_CAP \ | |
153 | { \ | |
154 | .ht_supported = true, \ | |
155 | .cap = IEEE80211_HT_CAP_MAX_AMSDU | \ | |
156 | IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \ | |
157 | IEEE80211_HT_CAP_SGI_40 | \ | |
158 | IEEE80211_HT_CAP_DSSSCCK40 | \ | |
159 | IEEE80211_HT_CAP_SM_PS, \ | |
160 | .ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K, \ | |
161 | .ampdu_density = IEEE80211_HT_MPDU_DENSITY_8, \ | |
162 | .mcs = { \ | |
163 | .rx_mask = { 0xff, 0xff, 0, 0, 0x1, 0, 0, 0, 0, 0, }, \ | |
164 | .rx_highest = cpu_to_le16(300), \ | |
165 | .tx_params = IEEE80211_HT_MCS_TX_DEFINED, \ | |
166 | }, \ | |
167 | } | |
168 | ||
169 | static struct ieee80211_supported_band carl9170_band_2GHz = { | |
170 | .channels = carl9170_2ghz_chantable, | |
171 | .n_channels = ARRAY_SIZE(carl9170_2ghz_chantable), | |
172 | .bitrates = carl9170_g_ratetable, | |
173 | .n_bitrates = carl9170_g_ratetable_size, | |
174 | .ht_cap = CARL9170_HT_CAP, | |
175 | }; | |
176 | ||
177 | static struct ieee80211_supported_band carl9170_band_5GHz = { | |
178 | .channels = carl9170_5ghz_chantable, | |
179 | .n_channels = ARRAY_SIZE(carl9170_5ghz_chantable), | |
180 | .bitrates = carl9170_a_ratetable, | |
181 | .n_bitrates = carl9170_a_ratetable_size, | |
182 | .ht_cap = CARL9170_HT_CAP, | |
183 | }; | |
184 | ||
185 | static void carl9170_ampdu_gc(struct ar9170 *ar) | |
186 | { | |
187 | struct carl9170_sta_tid *tid_info; | |
188 | LIST_HEAD(tid_gc); | |
189 | ||
190 | rcu_read_lock(); | |
191 | list_for_each_entry_rcu(tid_info, &ar->tx_ampdu_list, list) { | |
192 | spin_lock_bh(&ar->tx_ampdu_list_lock); | |
193 | if (tid_info->state == CARL9170_TID_STATE_SHUTDOWN) { | |
194 | tid_info->state = CARL9170_TID_STATE_KILLED; | |
195 | list_del_rcu(&tid_info->list); | |
196 | ar->tx_ampdu_list_len--; | |
197 | list_add_tail(&tid_info->tmp_list, &tid_gc); | |
198 | } | |
199 | spin_unlock_bh(&ar->tx_ampdu_list_lock); | |
200 | ||
201 | } | |
202 | rcu_assign_pointer(ar->tx_ampdu_iter, tid_info); | |
203 | rcu_read_unlock(); | |
204 | ||
205 | synchronize_rcu(); | |
206 | ||
207 | while (!list_empty(&tid_gc)) { | |
208 | struct sk_buff *skb; | |
209 | tid_info = list_first_entry(&tid_gc, struct carl9170_sta_tid, | |
210 | tmp_list); | |
211 | ||
212 | while ((skb = __skb_dequeue(&tid_info->queue))) | |
213 | carl9170_tx_status(ar, skb, false); | |
214 | ||
215 | list_del_init(&tid_info->tmp_list); | |
216 | kfree(tid_info); | |
217 | } | |
218 | } | |
219 | ||
220 | static void carl9170_flush(struct ar9170 *ar, bool drop_queued) | |
221 | { | |
222 | if (drop_queued) { | |
223 | int i; | |
224 | ||
225 | /* | |
226 | * We can only drop frames which have not been uploaded | |
227 | * to the device yet. | |
228 | */ | |
229 | ||
230 | for (i = 0; i < ar->hw->queues; i++) { | |
231 | struct sk_buff *skb; | |
232 | ||
cb139ecc CL |
233 | while ((skb = skb_dequeue(&ar->tx_pending[i]))) { |
234 | struct ieee80211_tx_info *info; | |
235 | ||
236 | info = IEEE80211_SKB_CB(skb); | |
237 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
238 | atomic_dec(&ar->tx_ampdu_upload); | |
239 | ||
fe8ee9ad | 240 | carl9170_tx_status(ar, skb, false); |
cb139ecc | 241 | } |
fe8ee9ad CL |
242 | } |
243 | } | |
244 | ||
245 | /* Wait for all other outstanding frames to timeout. */ | |
246 | if (atomic_read(&ar->tx_total_queued)) | |
247 | WARN_ON(wait_for_completion_timeout(&ar->tx_flush, HZ) == 0); | |
248 | } | |
249 | ||
250 | static void carl9170_flush_ba(struct ar9170 *ar) | |
251 | { | |
252 | struct sk_buff_head free; | |
253 | struct carl9170_sta_tid *tid_info; | |
254 | struct sk_buff *skb; | |
255 | ||
256 | __skb_queue_head_init(&free); | |
257 | ||
258 | rcu_read_lock(); | |
259 | spin_lock_bh(&ar->tx_ampdu_list_lock); | |
260 | list_for_each_entry_rcu(tid_info, &ar->tx_ampdu_list, list) { | |
261 | if (tid_info->state > CARL9170_TID_STATE_SUSPEND) { | |
262 | tid_info->state = CARL9170_TID_STATE_SUSPEND; | |
263 | ||
264 | spin_lock(&tid_info->lock); | |
265 | while ((skb = __skb_dequeue(&tid_info->queue))) | |
266 | __skb_queue_tail(&free, skb); | |
267 | spin_unlock(&tid_info->lock); | |
268 | } | |
269 | } | |
270 | spin_unlock_bh(&ar->tx_ampdu_list_lock); | |
271 | rcu_read_unlock(); | |
272 | ||
273 | while ((skb = __skb_dequeue(&free))) | |
274 | carl9170_tx_status(ar, skb, false); | |
275 | } | |
276 | ||
277 | static void carl9170_zap_queues(struct ar9170 *ar) | |
278 | { | |
279 | struct carl9170_vif_info *cvif; | |
280 | unsigned int i; | |
281 | ||
282 | carl9170_ampdu_gc(ar); | |
283 | ||
284 | carl9170_flush_ba(ar); | |
285 | carl9170_flush(ar, true); | |
286 | ||
287 | for (i = 0; i < ar->hw->queues; i++) { | |
288 | spin_lock_bh(&ar->tx_status[i].lock); | |
289 | while (!skb_queue_empty(&ar->tx_status[i])) { | |
290 | struct sk_buff *skb; | |
291 | ||
292 | skb = skb_peek(&ar->tx_status[i]); | |
293 | carl9170_tx_get_skb(skb); | |
294 | spin_unlock_bh(&ar->tx_status[i].lock); | |
295 | carl9170_tx_drop(ar, skb); | |
296 | spin_lock_bh(&ar->tx_status[i].lock); | |
297 | carl9170_tx_put_skb(skb); | |
298 | } | |
299 | spin_unlock_bh(&ar->tx_status[i].lock); | |
300 | } | |
301 | ||
302 | BUILD_BUG_ON(CARL9170_NUM_TX_LIMIT_SOFT < 1); | |
303 | BUILD_BUG_ON(CARL9170_NUM_TX_LIMIT_HARD < CARL9170_NUM_TX_LIMIT_SOFT); | |
304 | BUILD_BUG_ON(CARL9170_NUM_TX_LIMIT_HARD >= CARL9170_BAW_BITS); | |
305 | ||
306 | /* reinitialize queues statistics */ | |
307 | memset(&ar->tx_stats, 0, sizeof(ar->tx_stats)); | |
308 | for (i = 0; i < ar->hw->queues; i++) | |
309 | ar->tx_stats[i].limit = CARL9170_NUM_TX_LIMIT_HARD; | |
310 | ||
311 | for (i = 0; i < DIV_ROUND_UP(ar->fw.mem_blocks, BITS_PER_LONG); i++) | |
312 | ar->mem_bitmap[i] = 0; | |
313 | ||
314 | rcu_read_lock(); | |
315 | list_for_each_entry_rcu(cvif, &ar->vif_list, list) { | |
316 | spin_lock_bh(&ar->beacon_lock); | |
317 | dev_kfree_skb_any(cvif->beacon); | |
318 | cvif->beacon = NULL; | |
319 | spin_unlock_bh(&ar->beacon_lock); | |
320 | } | |
321 | rcu_read_unlock(); | |
322 | ||
323 | atomic_set(&ar->tx_ampdu_upload, 0); | |
324 | atomic_set(&ar->tx_ampdu_scheduler, 0); | |
325 | atomic_set(&ar->tx_total_pending, 0); | |
326 | atomic_set(&ar->tx_total_queued, 0); | |
327 | atomic_set(&ar->mem_free_blocks, ar->fw.mem_blocks); | |
328 | } | |
329 | ||
330 | #define CARL9170_FILL_QUEUE(queue, ai_fs, cwmin, cwmax, _txop) \ | |
331 | do { \ | |
332 | queue.aifs = ai_fs; \ | |
333 | queue.cw_min = cwmin; \ | |
334 | queue.cw_max = cwmax; \ | |
335 | queue.txop = _txop; \ | |
336 | } while (0) | |
337 | ||
338 | static int carl9170_op_start(struct ieee80211_hw *hw) | |
339 | { | |
340 | struct ar9170 *ar = hw->priv; | |
341 | int err, i; | |
342 | ||
343 | mutex_lock(&ar->mutex); | |
344 | ||
345 | carl9170_zap_queues(ar); | |
346 | ||
347 | /* reset QoS defaults */ | |
348 | CARL9170_FILL_QUEUE(ar->edcf[0], 3, 15, 1023, 0); /* BEST EFFORT */ | |
349 | CARL9170_FILL_QUEUE(ar->edcf[1], 2, 7, 15, 94); /* VIDEO */ | |
350 | CARL9170_FILL_QUEUE(ar->edcf[2], 2, 3, 7, 47); /* VOICE */ | |
351 | CARL9170_FILL_QUEUE(ar->edcf[3], 7, 15, 1023, 0); /* BACKGROUND */ | |
352 | CARL9170_FILL_QUEUE(ar->edcf[4], 2, 3, 7, 0); /* SPECIAL */ | |
353 | ||
354 | ar->current_factor = ar->current_density = -1; | |
355 | /* "The first key is unique." */ | |
356 | ar->usedkeys = 1; | |
357 | ar->filter_state = 0; | |
358 | ar->ps.last_action = jiffies; | |
359 | ar->ps.last_slept = jiffies; | |
360 | ar->erp_mode = CARL9170_ERP_AUTO; | |
361 | ar->rx_software_decryption = false; | |
362 | ar->disable_offload = false; | |
363 | ||
364 | for (i = 0; i < ar->hw->queues; i++) { | |
365 | ar->queue_stop_timeout[i] = jiffies; | |
366 | ar->max_queue_stop_timeout[i] = 0; | |
367 | } | |
368 | ||
369 | atomic_set(&ar->mem_allocs, 0); | |
370 | ||
371 | err = carl9170_usb_open(ar); | |
372 | if (err) | |
373 | goto out; | |
374 | ||
375 | err = carl9170_init_mac(ar); | |
376 | if (err) | |
377 | goto out; | |
378 | ||
379 | err = carl9170_set_qos(ar); | |
380 | if (err) | |
381 | goto out; | |
382 | ||
5c895691 CL |
383 | if (ar->fw.rx_filter) { |
384 | err = carl9170_rx_filter(ar, CARL9170_RX_FILTER_OTHER_RA | | |
385 | CARL9170_RX_FILTER_CTL_OTHER | CARL9170_RX_FILTER_BAD); | |
386 | if (err) | |
387 | goto out; | |
388 | } | |
389 | ||
fe8ee9ad CL |
390 | err = carl9170_write_reg(ar, AR9170_MAC_REG_DMA_TRIGGER, |
391 | AR9170_DMA_TRIGGER_RXQ); | |
392 | if (err) | |
393 | goto out; | |
394 | ||
395 | /* Clear key-cache */ | |
396 | for (i = 0; i < AR9170_CAM_MAX_USER + 4; i++) { | |
397 | err = carl9170_upload_key(ar, i, NULL, AR9170_ENC_ALG_NONE, | |
398 | 0, NULL, 0); | |
399 | if (err) | |
400 | goto out; | |
401 | ||
402 | err = carl9170_upload_key(ar, i, NULL, AR9170_ENC_ALG_NONE, | |
403 | 1, NULL, 0); | |
404 | if (err) | |
405 | goto out; | |
406 | ||
407 | if (i < AR9170_CAM_MAX_USER) { | |
408 | err = carl9170_disable_key(ar, i); | |
409 | if (err) | |
410 | goto out; | |
411 | } | |
412 | } | |
413 | ||
414 | carl9170_set_state_when(ar, CARL9170_IDLE, CARL9170_STARTED); | |
415 | ||
416 | ieee80211_wake_queues(ar->hw); | |
417 | err = 0; | |
418 | ||
419 | out: | |
420 | mutex_unlock(&ar->mutex); | |
421 | return err; | |
422 | } | |
423 | ||
424 | static void carl9170_cancel_worker(struct ar9170 *ar) | |
425 | { | |
426 | cancel_delayed_work_sync(&ar->tx_janitor); | |
427 | #ifdef CONFIG_CARL9170_LEDS | |
428 | cancel_delayed_work_sync(&ar->led_work); | |
429 | #endif /* CONFIG_CARL9170_LEDS */ | |
430 | cancel_work_sync(&ar->ps_work); | |
e4a668c5 | 431 | cancel_work_sync(&ar->ping_work); |
fe8ee9ad CL |
432 | cancel_work_sync(&ar->ampdu_work); |
433 | } | |
434 | ||
435 | static void carl9170_op_stop(struct ieee80211_hw *hw) | |
436 | { | |
437 | struct ar9170 *ar = hw->priv; | |
438 | ||
439 | carl9170_set_state_when(ar, CARL9170_STARTED, CARL9170_IDLE); | |
440 | ||
441 | ieee80211_stop_queues(ar->hw); | |
442 | ||
443 | mutex_lock(&ar->mutex); | |
444 | if (IS_ACCEPTING_CMD(ar)) { | |
445 | rcu_assign_pointer(ar->beacon_iter, NULL); | |
446 | ||
447 | carl9170_led_set_state(ar, 0); | |
448 | ||
449 | /* stop DMA */ | |
450 | carl9170_write_reg(ar, AR9170_MAC_REG_DMA_TRIGGER, 0); | |
451 | carl9170_usb_stop(ar); | |
452 | } | |
453 | ||
454 | carl9170_zap_queues(ar); | |
455 | mutex_unlock(&ar->mutex); | |
456 | ||
457 | carl9170_cancel_worker(ar); | |
458 | } | |
459 | ||
460 | static void carl9170_restart_work(struct work_struct *work) | |
461 | { | |
462 | struct ar9170 *ar = container_of(work, struct ar9170, | |
463 | restart_work); | |
464 | int err; | |
465 | ||
466 | ar->usedkeys = 0; | |
467 | ar->filter_state = 0; | |
468 | carl9170_cancel_worker(ar); | |
469 | ||
470 | mutex_lock(&ar->mutex); | |
471 | err = carl9170_usb_restart(ar); | |
472 | if (net_ratelimit()) { | |
473 | if (err) { | |
474 | dev_err(&ar->udev->dev, "Failed to restart device " | |
475 | " (%d).\n", err); | |
476 | } else { | |
477 | dev_info(&ar->udev->dev, "device restarted " | |
478 | "successfully.\n"); | |
479 | } | |
480 | } | |
481 | ||
482 | carl9170_zap_queues(ar); | |
483 | mutex_unlock(&ar->mutex); | |
484 | if (!err) { | |
485 | ar->restart_counter++; | |
486 | atomic_set(&ar->pending_restarts, 0); | |
487 | ||
488 | ieee80211_restart_hw(ar->hw); | |
489 | } else { | |
490 | /* | |
491 | * The reset was unsuccessful and the device seems to | |
492 | * be dead. But there's still one option: a low-level | |
493 | * usb subsystem reset... | |
494 | */ | |
495 | ||
496 | carl9170_usb_reset(ar); | |
497 | } | |
498 | } | |
499 | ||
500 | void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r) | |
501 | { | |
502 | carl9170_set_state_when(ar, CARL9170_STARTED, CARL9170_IDLE); | |
503 | ||
504 | /* | |
505 | * Sometimes, an error can trigger several different reset events. | |
506 | * By ignoring these *surplus* reset events, the device won't be | |
507 | * killed again, right after it has recovered. | |
508 | */ | |
509 | if (atomic_inc_return(&ar->pending_restarts) > 1) { | |
510 | dev_dbg(&ar->udev->dev, "ignoring restart (%d)\n", r); | |
511 | return; | |
512 | } | |
513 | ||
514 | ieee80211_stop_queues(ar->hw); | |
515 | ||
516 | dev_err(&ar->udev->dev, "restart device (%d)\n", r); | |
517 | ||
518 | if (!WARN_ON(r == CARL9170_RR_NO_REASON) || | |
519 | !WARN_ON(r >= __CARL9170_RR_LAST)) | |
520 | ar->last_reason = r; | |
521 | ||
522 | if (!ar->registered) | |
523 | return; | |
524 | ||
525 | if (IS_ACCEPTING_CMD(ar) && !ar->needs_full_reset) | |
526 | ieee80211_queue_work(ar->hw, &ar->restart_work); | |
527 | else | |
528 | carl9170_usb_reset(ar); | |
529 | ||
530 | /* | |
531 | * At this point, the device instance might have vanished/disabled. | |
532 | * So, don't put any code which access the ar9170 struct | |
533 | * without proper protection. | |
534 | */ | |
535 | } | |
536 | ||
e4a668c5 CL |
537 | static void carl9170_ping_work(struct work_struct *work) |
538 | { | |
539 | struct ar9170 *ar = container_of(work, struct ar9170, ping_work); | |
540 | int err; | |
541 | ||
542 | if (!IS_STARTED(ar)) | |
543 | return; | |
544 | ||
545 | mutex_lock(&ar->mutex); | |
546 | err = carl9170_echo_test(ar, 0xdeadbeef); | |
547 | if (err) | |
548 | carl9170_restart(ar, CARL9170_RR_UNRESPONSIVE_DEVICE); | |
549 | mutex_unlock(&ar->mutex); | |
550 | } | |
551 | ||
fe8ee9ad CL |
552 | static int carl9170_init_interface(struct ar9170 *ar, |
553 | struct ieee80211_vif *vif) | |
554 | { | |
555 | struct ath_common *common = &ar->common; | |
556 | int err; | |
557 | ||
558 | if (!vif) { | |
559 | WARN_ON_ONCE(IS_STARTED(ar)); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | memcpy(common->macaddr, vif->addr, ETH_ALEN); | |
564 | ||
565 | if (modparam_nohwcrypt || | |
566 | ((vif->type != NL80211_IFTYPE_STATION) && | |
567 | (vif->type != NL80211_IFTYPE_AP))) { | |
568 | ar->rx_software_decryption = true; | |
569 | ar->disable_offload = true; | |
570 | } | |
571 | ||
572 | err = carl9170_set_operating_mode(ar); | |
573 | return err; | |
574 | } | |
575 | ||
576 | static int carl9170_op_add_interface(struct ieee80211_hw *hw, | |
577 | struct ieee80211_vif *vif) | |
578 | { | |
579 | struct carl9170_vif_info *vif_priv = (void *) vif->drv_priv; | |
580 | struct ieee80211_vif *main_vif; | |
581 | struct ar9170 *ar = hw->priv; | |
582 | int vif_id = -1, err = 0; | |
583 | ||
584 | mutex_lock(&ar->mutex); | |
585 | rcu_read_lock(); | |
586 | if (vif_priv->active) { | |
587 | /* | |
588 | * Skip the interface structure initialization, | |
589 | * if the vif survived the _restart call. | |
590 | */ | |
591 | vif_id = vif_priv->id; | |
592 | vif_priv->enable_beacon = false; | |
593 | ||
594 | spin_lock_bh(&ar->beacon_lock); | |
595 | dev_kfree_skb_any(vif_priv->beacon); | |
596 | vif_priv->beacon = NULL; | |
597 | spin_unlock_bh(&ar->beacon_lock); | |
598 | ||
599 | goto init; | |
600 | } | |
601 | ||
602 | main_vif = carl9170_get_main_vif(ar); | |
603 | ||
604 | if (main_vif) { | |
605 | switch (main_vif->type) { | |
606 | case NL80211_IFTYPE_STATION: | |
607 | if (vif->type == NL80211_IFTYPE_STATION) | |
608 | break; | |
609 | ||
610 | err = -EBUSY; | |
611 | rcu_read_unlock(); | |
612 | ||
613 | goto unlock; | |
614 | ||
615 | case NL80211_IFTYPE_AP: | |
616 | if ((vif->type == NL80211_IFTYPE_STATION) || | |
617 | (vif->type == NL80211_IFTYPE_WDS) || | |
618 | (vif->type == NL80211_IFTYPE_AP)) | |
619 | break; | |
620 | ||
621 | err = -EBUSY; | |
622 | rcu_read_unlock(); | |
623 | goto unlock; | |
624 | ||
625 | default: | |
626 | rcu_read_unlock(); | |
627 | goto unlock; | |
628 | } | |
629 | } | |
630 | ||
631 | vif_id = bitmap_find_free_region(&ar->vif_bitmap, ar->fw.vif_num, 0); | |
632 | ||
633 | if (vif_id < 0) { | |
634 | rcu_read_unlock(); | |
635 | ||
636 | err = -ENOSPC; | |
637 | goto unlock; | |
638 | } | |
639 | ||
640 | BUG_ON(ar->vif_priv[vif_id].id != vif_id); | |
641 | ||
642 | vif_priv->active = true; | |
643 | vif_priv->id = vif_id; | |
644 | vif_priv->enable_beacon = false; | |
645 | ar->vifs++; | |
646 | list_add_tail_rcu(&vif_priv->list, &ar->vif_list); | |
647 | rcu_assign_pointer(ar->vif_priv[vif_id].vif, vif); | |
648 | ||
649 | init: | |
650 | if (carl9170_get_main_vif(ar) == vif) { | |
651 | rcu_assign_pointer(ar->beacon_iter, vif_priv); | |
652 | rcu_read_unlock(); | |
653 | ||
654 | err = carl9170_init_interface(ar, vif); | |
655 | if (err) | |
656 | goto unlock; | |
657 | } else { | |
fe8ee9ad | 658 | rcu_read_unlock(); |
dafeac38 | 659 | err = carl9170_mod_virtual_mac(ar, vif_id, vif->addr); |
fe8ee9ad CL |
660 | |
661 | if (err) | |
662 | goto unlock; | |
663 | } | |
664 | ||
aa32452d CL |
665 | if (ar->fw.tx_seq_table) { |
666 | err = carl9170_write_reg(ar, ar->fw.tx_seq_table + vif_id * 4, | |
667 | 0); | |
668 | if (err) | |
669 | goto unlock; | |
670 | } | |
671 | ||
fe8ee9ad | 672 | unlock: |
b397492a | 673 | if (err && (vif_id >= 0)) { |
fe8ee9ad CL |
674 | vif_priv->active = false; |
675 | bitmap_release_region(&ar->vif_bitmap, vif_id, 0); | |
676 | ar->vifs--; | |
677 | rcu_assign_pointer(ar->vif_priv[vif_id].vif, NULL); | |
678 | list_del_rcu(&vif_priv->list); | |
679 | mutex_unlock(&ar->mutex); | |
680 | synchronize_rcu(); | |
681 | } else { | |
682 | if (ar->vifs > 1) | |
683 | ar->ps.off_override |= PS_OFF_VIF; | |
684 | ||
685 | mutex_unlock(&ar->mutex); | |
686 | } | |
687 | ||
688 | return err; | |
689 | } | |
690 | ||
691 | static void carl9170_op_remove_interface(struct ieee80211_hw *hw, | |
692 | struct ieee80211_vif *vif) | |
693 | { | |
694 | struct carl9170_vif_info *vif_priv = (void *) vif->drv_priv; | |
695 | struct ieee80211_vif *main_vif; | |
696 | struct ar9170 *ar = hw->priv; | |
697 | unsigned int id; | |
698 | ||
699 | mutex_lock(&ar->mutex); | |
700 | ||
701 | if (WARN_ON_ONCE(!vif_priv->active)) | |
702 | goto unlock; | |
703 | ||
704 | ar->vifs--; | |
705 | ||
706 | rcu_read_lock(); | |
707 | main_vif = carl9170_get_main_vif(ar); | |
708 | ||
709 | id = vif_priv->id; | |
710 | ||
711 | vif_priv->active = false; | |
712 | WARN_ON(vif_priv->enable_beacon); | |
713 | vif_priv->enable_beacon = false; | |
714 | list_del_rcu(&vif_priv->list); | |
715 | rcu_assign_pointer(ar->vif_priv[id].vif, NULL); | |
716 | ||
717 | if (vif == main_vif) { | |
718 | rcu_read_unlock(); | |
719 | ||
720 | if (ar->vifs) { | |
721 | WARN_ON(carl9170_init_interface(ar, | |
722 | carl9170_get_main_vif(ar))); | |
723 | } else { | |
724 | carl9170_set_operating_mode(ar); | |
725 | } | |
726 | } else { | |
727 | rcu_read_unlock(); | |
728 | ||
729 | WARN_ON(carl9170_mod_virtual_mac(ar, id, NULL)); | |
730 | } | |
731 | ||
732 | carl9170_update_beacon(ar, false); | |
733 | carl9170_flush_cab(ar, id); | |
734 | ||
735 | spin_lock_bh(&ar->beacon_lock); | |
736 | dev_kfree_skb_any(vif_priv->beacon); | |
737 | vif_priv->beacon = NULL; | |
738 | spin_unlock_bh(&ar->beacon_lock); | |
739 | ||
740 | bitmap_release_region(&ar->vif_bitmap, id, 0); | |
741 | ||
742 | carl9170_set_beacon_timers(ar); | |
743 | ||
744 | if (ar->vifs == 1) | |
745 | ar->ps.off_override &= ~PS_OFF_VIF; | |
746 | ||
747 | unlock: | |
748 | mutex_unlock(&ar->mutex); | |
749 | ||
750 | synchronize_rcu(); | |
751 | } | |
752 | ||
753 | void carl9170_ps_check(struct ar9170 *ar) | |
754 | { | |
755 | ieee80211_queue_work(ar->hw, &ar->ps_work); | |
756 | } | |
757 | ||
758 | /* caller must hold ar->mutex */ | |
759 | static int carl9170_ps_update(struct ar9170 *ar) | |
760 | { | |
761 | bool ps = false; | |
762 | int err = 0; | |
763 | ||
764 | if (!ar->ps.off_override) | |
765 | ps = (ar->hw->conf.flags & IEEE80211_CONF_PS); | |
766 | ||
767 | if (ps != ar->ps.state) { | |
768 | err = carl9170_powersave(ar, ps); | |
769 | if (err) | |
770 | return err; | |
771 | ||
772 | if (ar->ps.state && !ps) { | |
773 | ar->ps.sleep_ms = jiffies_to_msecs(jiffies - | |
774 | ar->ps.last_action); | |
775 | } | |
776 | ||
777 | if (ps) | |
778 | ar->ps.last_slept = jiffies; | |
779 | ||
780 | ar->ps.last_action = jiffies; | |
781 | ar->ps.state = ps; | |
782 | } | |
783 | ||
784 | return 0; | |
785 | } | |
786 | ||
787 | static void carl9170_ps_work(struct work_struct *work) | |
788 | { | |
789 | struct ar9170 *ar = container_of(work, struct ar9170, | |
790 | ps_work); | |
791 | mutex_lock(&ar->mutex); | |
792 | if (IS_STARTED(ar)) | |
793 | WARN_ON_ONCE(carl9170_ps_update(ar) != 0); | |
794 | mutex_unlock(&ar->mutex); | |
795 | } | |
796 | ||
797 | ||
798 | static int carl9170_op_config(struct ieee80211_hw *hw, u32 changed) | |
799 | { | |
800 | struct ar9170 *ar = hw->priv; | |
801 | int err = 0; | |
802 | ||
803 | mutex_lock(&ar->mutex); | |
804 | if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { | |
805 | /* TODO */ | |
806 | err = 0; | |
807 | } | |
808 | ||
809 | if (changed & IEEE80211_CONF_CHANGE_PS) { | |
810 | err = carl9170_ps_update(ar); | |
811 | if (err) | |
812 | goto out; | |
813 | } | |
814 | ||
815 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
816 | /* TODO */ | |
817 | err = 0; | |
818 | } | |
819 | ||
820 | if (changed & IEEE80211_CONF_CHANGE_SMPS) { | |
821 | /* TODO */ | |
822 | err = 0; | |
823 | } | |
824 | ||
825 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
826 | /* adjust slot time for 5 GHz */ | |
827 | err = carl9170_set_slot_time(ar); | |
828 | if (err) | |
829 | goto out; | |
830 | ||
831 | err = carl9170_set_channel(ar, hw->conf.channel, | |
832 | hw->conf.channel_type, CARL9170_RFI_NONE); | |
833 | if (err) | |
834 | goto out; | |
835 | ||
836 | err = carl9170_set_dyn_sifs_ack(ar); | |
837 | if (err) | |
838 | goto out; | |
839 | ||
840 | err = carl9170_set_rts_cts_rate(ar); | |
841 | if (err) | |
842 | goto out; | |
843 | } | |
844 | ||
845 | out: | |
846 | mutex_unlock(&ar->mutex); | |
847 | return err; | |
848 | } | |
849 | ||
850 | static u64 carl9170_op_prepare_multicast(struct ieee80211_hw *hw, | |
851 | struct netdev_hw_addr_list *mc_list) | |
852 | { | |
853 | struct netdev_hw_addr *ha; | |
854 | u64 mchash; | |
855 | ||
856 | /* always get broadcast frames */ | |
857 | mchash = 1ULL << (0xff >> 2); | |
858 | ||
859 | netdev_hw_addr_list_for_each(ha, mc_list) | |
860 | mchash |= 1ULL << (ha->addr[5] >> 2); | |
861 | ||
862 | return mchash; | |
863 | } | |
864 | ||
865 | static void carl9170_op_configure_filter(struct ieee80211_hw *hw, | |
866 | unsigned int changed_flags, | |
867 | unsigned int *new_flags, | |
868 | u64 multicast) | |
869 | { | |
870 | struct ar9170 *ar = hw->priv; | |
871 | ||
872 | /* mask supported flags */ | |
5c895691 | 873 | *new_flags &= FIF_ALLMULTI | ar->rx_filter_caps; |
fe8ee9ad CL |
874 | |
875 | if (!IS_ACCEPTING_CMD(ar)) | |
876 | return; | |
877 | ||
878 | mutex_lock(&ar->mutex); | |
879 | ||
880 | ar->filter_state = *new_flags; | |
881 | /* | |
882 | * We can support more by setting the sniffer bit and | |
883 | * then checking the error flags, later. | |
884 | */ | |
885 | ||
886 | if (changed_flags & FIF_ALLMULTI && *new_flags & FIF_ALLMULTI) | |
887 | multicast = ~0ULL; | |
888 | ||
889 | if (multicast != ar->cur_mc_hash) | |
890 | WARN_ON(carl9170_update_multicast(ar, multicast)); | |
891 | ||
892 | if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) { | |
893 | ar->sniffer_enabled = !!(*new_flags & | |
894 | (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)); | |
895 | ||
896 | WARN_ON(carl9170_set_operating_mode(ar)); | |
897 | } | |
898 | ||
5c895691 CL |
899 | if (ar->fw.rx_filter && changed_flags & ar->rx_filter_caps) { |
900 | u32 rx_filter = 0; | |
901 | ||
902 | if (!(*new_flags & (FIF_FCSFAIL | FIF_PLCPFAIL))) | |
903 | rx_filter |= CARL9170_RX_FILTER_BAD; | |
904 | ||
905 | if (!(*new_flags & FIF_CONTROL)) | |
906 | rx_filter |= CARL9170_RX_FILTER_CTL_OTHER; | |
907 | ||
908 | if (!(*new_flags & FIF_PSPOLL)) | |
909 | rx_filter |= CARL9170_RX_FILTER_CTL_PSPOLL; | |
910 | ||
911 | if (!(*new_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))) { | |
912 | rx_filter |= CARL9170_RX_FILTER_OTHER_RA; | |
913 | rx_filter |= CARL9170_RX_FILTER_DECRY_FAIL; | |
914 | } | |
915 | ||
916 | WARN_ON(carl9170_rx_filter(ar, rx_filter)); | |
917 | } | |
918 | ||
fe8ee9ad CL |
919 | mutex_unlock(&ar->mutex); |
920 | } | |
921 | ||
922 | ||
923 | static void carl9170_op_bss_info_changed(struct ieee80211_hw *hw, | |
924 | struct ieee80211_vif *vif, | |
925 | struct ieee80211_bss_conf *bss_conf, | |
926 | u32 changed) | |
927 | { | |
928 | struct ar9170 *ar = hw->priv; | |
929 | struct ath_common *common = &ar->common; | |
930 | int err = 0; | |
931 | struct carl9170_vif_info *vif_priv; | |
932 | struct ieee80211_vif *main_vif; | |
933 | ||
934 | mutex_lock(&ar->mutex); | |
935 | vif_priv = (void *) vif->drv_priv; | |
936 | main_vif = carl9170_get_main_vif(ar); | |
937 | if (WARN_ON(!main_vif)) | |
938 | goto out; | |
939 | ||
940 | if (changed & BSS_CHANGED_BEACON_ENABLED) { | |
941 | struct carl9170_vif_info *iter; | |
942 | int i = 0; | |
943 | ||
944 | vif_priv->enable_beacon = bss_conf->enable_beacon; | |
945 | rcu_read_lock(); | |
946 | list_for_each_entry_rcu(iter, &ar->vif_list, list) { | |
947 | if (iter->active && iter->enable_beacon) | |
948 | i++; | |
949 | ||
950 | } | |
951 | rcu_read_unlock(); | |
952 | ||
953 | ar->beacon_enabled = i; | |
954 | } | |
955 | ||
956 | if (changed & BSS_CHANGED_BEACON) { | |
957 | err = carl9170_update_beacon(ar, false); | |
958 | if (err) | |
959 | goto out; | |
960 | } | |
961 | ||
962 | if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON | | |
963 | BSS_CHANGED_BEACON_INT)) { | |
964 | ||
965 | if (main_vif != vif) { | |
966 | bss_conf->beacon_int = main_vif->bss_conf.beacon_int; | |
967 | bss_conf->dtim_period = main_vif->bss_conf.dtim_period; | |
968 | } | |
969 | ||
970 | /* | |
971 | * Therefore a hard limit for the broadcast traffic should | |
972 | * prevent false alarms. | |
973 | */ | |
974 | if (vif->type != NL80211_IFTYPE_STATION && | |
975 | (bss_conf->beacon_int * bss_conf->dtim_period >= | |
976 | (CARL9170_QUEUE_STUCK_TIMEOUT / 2))) { | |
977 | err = -EINVAL; | |
978 | goto out; | |
979 | } | |
980 | ||
981 | err = carl9170_set_beacon_timers(ar); | |
982 | if (err) | |
983 | goto out; | |
984 | } | |
985 | ||
986 | if (changed & BSS_CHANGED_HT) { | |
987 | /* TODO */ | |
988 | err = 0; | |
989 | if (err) | |
990 | goto out; | |
991 | } | |
992 | ||
993 | if (main_vif != vif) | |
994 | goto out; | |
995 | ||
996 | /* | |
997 | * The following settings can only be changed by the | |
998 | * master interface. | |
999 | */ | |
1000 | ||
1001 | if (changed & BSS_CHANGED_BSSID) { | |
1002 | memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); | |
1003 | err = carl9170_set_operating_mode(ar); | |
1004 | if (err) | |
1005 | goto out; | |
1006 | } | |
1007 | ||
1008 | if (changed & BSS_CHANGED_ASSOC) { | |
1009 | ar->common.curaid = bss_conf->aid; | |
1010 | err = carl9170_set_beacon_timers(ar); | |
1011 | if (err) | |
1012 | goto out; | |
1013 | } | |
1014 | ||
1015 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
1016 | err = carl9170_set_slot_time(ar); | |
1017 | if (err) | |
1018 | goto out; | |
1019 | } | |
1020 | ||
1021 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
1022 | err = carl9170_set_mac_rates(ar); | |
1023 | if (err) | |
1024 | goto out; | |
1025 | } | |
1026 | ||
1027 | out: | |
1028 | WARN_ON_ONCE(err && IS_STARTED(ar)); | |
1029 | mutex_unlock(&ar->mutex); | |
1030 | } | |
1031 | ||
1032 | static u64 carl9170_op_get_tsf(struct ieee80211_hw *hw) | |
1033 | { | |
1034 | struct ar9170 *ar = hw->priv; | |
1035 | struct carl9170_tsf_rsp tsf; | |
1036 | int err; | |
1037 | ||
1038 | mutex_lock(&ar->mutex); | |
1039 | err = carl9170_exec_cmd(ar, CARL9170_CMD_READ_TSF, | |
1040 | 0, NULL, sizeof(tsf), &tsf); | |
1041 | mutex_unlock(&ar->mutex); | |
1042 | if (WARN_ON(err)) | |
1043 | return 0; | |
1044 | ||
1045 | return le64_to_cpu(tsf.tsf_64); | |
1046 | } | |
1047 | ||
1048 | static int carl9170_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
1049 | struct ieee80211_vif *vif, | |
1050 | struct ieee80211_sta *sta, | |
1051 | struct ieee80211_key_conf *key) | |
1052 | { | |
1053 | struct ar9170 *ar = hw->priv; | |
1054 | int err = 0, i; | |
1055 | u8 ktype; | |
1056 | ||
1057 | if (ar->disable_offload || !vif) | |
1058 | return -EOPNOTSUPP; | |
1059 | ||
1060 | /* | |
1061 | * We have to fall back to software encryption, whenever | |
1062 | * the user choose to participates in an IBSS or is connected | |
1063 | * to more than one network. | |
1064 | * | |
1065 | * This is very unfortunate, because some machines cannot handle | |
1066 | * the high througput speed in 802.11n networks. | |
1067 | */ | |
1068 | ||
1069 | if (!is_main_vif(ar, vif)) | |
1070 | goto err_softw; | |
1071 | ||
1072 | /* | |
1073 | * While the hardware supports *catch-all* key, for offloading | |
1074 | * group-key en-/de-cryption. The way of how the hardware | |
1075 | * decides which keyId maps to which key, remains a mystery... | |
1076 | */ | |
1077 | if ((vif->type != NL80211_IFTYPE_STATION && | |
1078 | vif->type != NL80211_IFTYPE_ADHOC) && | |
1079 | !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1080 | return -EOPNOTSUPP; | |
1081 | ||
1082 | switch (key->cipher) { | |
1083 | case WLAN_CIPHER_SUITE_WEP40: | |
1084 | ktype = AR9170_ENC_ALG_WEP64; | |
1085 | break; | |
1086 | case WLAN_CIPHER_SUITE_WEP104: | |
1087 | ktype = AR9170_ENC_ALG_WEP128; | |
1088 | break; | |
1089 | case WLAN_CIPHER_SUITE_TKIP: | |
1090 | ktype = AR9170_ENC_ALG_TKIP; | |
1091 | break; | |
1092 | case WLAN_CIPHER_SUITE_CCMP: | |
1093 | ktype = AR9170_ENC_ALG_AESCCMP; | |
1094 | break; | |
1095 | default: | |
1096 | return -EOPNOTSUPP; | |
1097 | } | |
1098 | ||
1099 | mutex_lock(&ar->mutex); | |
1100 | if (cmd == SET_KEY) { | |
1101 | if (!IS_STARTED(ar)) { | |
1102 | err = -EOPNOTSUPP; | |
1103 | goto out; | |
1104 | } | |
1105 | ||
1106 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { | |
1107 | sta = NULL; | |
1108 | ||
1109 | i = 64 + key->keyidx; | |
1110 | } else { | |
1111 | for (i = 0; i < 64; i++) | |
1112 | if (!(ar->usedkeys & BIT(i))) | |
1113 | break; | |
1114 | if (i == 64) | |
1115 | goto err_softw; | |
1116 | } | |
1117 | ||
1118 | key->hw_key_idx = i; | |
1119 | ||
1120 | err = carl9170_upload_key(ar, i, sta ? sta->addr : NULL, | |
1121 | ktype, 0, key->key, | |
1122 | min_t(u8, 16, key->keylen)); | |
1123 | if (err) | |
1124 | goto out; | |
1125 | ||
1126 | if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { | |
1127 | err = carl9170_upload_key(ar, i, sta ? sta->addr : | |
1128 | NULL, ktype, 1, | |
1129 | key->key + 16, 16); | |
1130 | if (err) | |
1131 | goto out; | |
1132 | ||
1133 | /* | |
1134 | * hardware is not capable generating MMIC | |
1135 | * of fragmented frames! | |
1136 | */ | |
1137 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
1138 | } | |
1139 | ||
1140 | if (i < 64) | |
1141 | ar->usedkeys |= BIT(i); | |
1142 | ||
1143 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1144 | } else { | |
1145 | if (!IS_STARTED(ar)) { | |
1146 | /* The device is gone... together with the key ;-) */ | |
1147 | err = 0; | |
1148 | goto out; | |
1149 | } | |
1150 | ||
1151 | if (key->hw_key_idx < 64) { | |
1152 | ar->usedkeys &= ~BIT(key->hw_key_idx); | |
1153 | } else { | |
1154 | err = carl9170_upload_key(ar, key->hw_key_idx, NULL, | |
1155 | AR9170_ENC_ALG_NONE, 0, | |
1156 | NULL, 0); | |
1157 | if (err) | |
1158 | goto out; | |
1159 | ||
1160 | if (key->cipher == WLAN_CIPHER_SUITE_TKIP) { | |
1161 | err = carl9170_upload_key(ar, key->hw_key_idx, | |
1162 | NULL, | |
1163 | AR9170_ENC_ALG_NONE, | |
1164 | 1, NULL, 0); | |
1165 | if (err) | |
1166 | goto out; | |
1167 | } | |
1168 | ||
1169 | } | |
1170 | ||
1171 | err = carl9170_disable_key(ar, key->hw_key_idx); | |
1172 | if (err) | |
1173 | goto out; | |
1174 | } | |
1175 | ||
1176 | out: | |
1177 | mutex_unlock(&ar->mutex); | |
1178 | return err; | |
1179 | ||
1180 | err_softw: | |
1181 | if (!ar->rx_software_decryption) { | |
1182 | ar->rx_software_decryption = true; | |
1183 | carl9170_set_operating_mode(ar); | |
1184 | } | |
1185 | mutex_unlock(&ar->mutex); | |
1186 | return -ENOSPC; | |
1187 | } | |
1188 | ||
1189 | static int carl9170_op_sta_add(struct ieee80211_hw *hw, | |
1190 | struct ieee80211_vif *vif, | |
1191 | struct ieee80211_sta *sta) | |
1192 | { | |
1193 | struct carl9170_sta_info *sta_info = (void *) sta->drv_priv; | |
1194 | unsigned int i; | |
1195 | ||
caf1eae2 CL |
1196 | atomic_set(&sta_info->pending_frames, 0); |
1197 | ||
fe8ee9ad CL |
1198 | if (sta->ht_cap.ht_supported) { |
1199 | if (sta->ht_cap.ampdu_density > 6) { | |
1200 | /* | |
1201 | * HW does support 16us AMPDU density. | |
1202 | * No HT-Xmit for station. | |
1203 | */ | |
1204 | ||
1205 | return 0; | |
1206 | } | |
1207 | ||
1208 | for (i = 0; i < CARL9170_NUM_TID; i++) | |
1209 | rcu_assign_pointer(sta_info->agg[i], NULL); | |
1210 | ||
1211 | sta_info->ampdu_max_len = 1 << (3 + sta->ht_cap.ampdu_factor); | |
1212 | sta_info->ht_sta = true; | |
1213 | } | |
1214 | ||
1215 | return 0; | |
1216 | } | |
1217 | ||
1218 | static int carl9170_op_sta_remove(struct ieee80211_hw *hw, | |
1219 | struct ieee80211_vif *vif, | |
1220 | struct ieee80211_sta *sta) | |
1221 | { | |
1222 | struct ar9170 *ar = hw->priv; | |
1223 | struct carl9170_sta_info *sta_info = (void *) sta->drv_priv; | |
1224 | unsigned int i; | |
1225 | bool cleanup = false; | |
1226 | ||
1227 | if (sta->ht_cap.ht_supported) { | |
1228 | ||
1229 | sta_info->ht_sta = false; | |
1230 | ||
1231 | rcu_read_lock(); | |
1232 | for (i = 0; i < CARL9170_NUM_TID; i++) { | |
1233 | struct carl9170_sta_tid *tid_info; | |
1234 | ||
1235 | tid_info = rcu_dereference(sta_info->agg[i]); | |
1236 | rcu_assign_pointer(sta_info->agg[i], NULL); | |
1237 | ||
1238 | if (!tid_info) | |
1239 | continue; | |
1240 | ||
1241 | spin_lock_bh(&ar->tx_ampdu_list_lock); | |
1242 | if (tid_info->state > CARL9170_TID_STATE_SHUTDOWN) | |
1243 | tid_info->state = CARL9170_TID_STATE_SHUTDOWN; | |
1244 | spin_unlock_bh(&ar->tx_ampdu_list_lock); | |
1245 | cleanup = true; | |
1246 | } | |
1247 | rcu_read_unlock(); | |
1248 | ||
1249 | if (cleanup) | |
1250 | carl9170_ampdu_gc(ar); | |
1251 | } | |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
1256 | static int carl9170_op_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
1257 | const struct ieee80211_tx_queue_params *param) | |
1258 | { | |
1259 | struct ar9170 *ar = hw->priv; | |
1260 | int ret; | |
1261 | ||
1262 | mutex_lock(&ar->mutex); | |
1263 | if (queue < ar->hw->queues) { | |
1264 | memcpy(&ar->edcf[ar9170_qmap[queue]], param, sizeof(*param)); | |
1265 | ret = carl9170_set_qos(ar); | |
1266 | } else { | |
1267 | ret = -EINVAL; | |
1268 | } | |
1269 | ||
1270 | mutex_unlock(&ar->mutex); | |
1271 | return ret; | |
1272 | } | |
1273 | ||
1274 | static void carl9170_ampdu_work(struct work_struct *work) | |
1275 | { | |
1276 | struct ar9170 *ar = container_of(work, struct ar9170, | |
1277 | ampdu_work); | |
1278 | ||
1279 | if (!IS_STARTED(ar)) | |
1280 | return; | |
1281 | ||
1282 | mutex_lock(&ar->mutex); | |
1283 | carl9170_ampdu_gc(ar); | |
1284 | mutex_unlock(&ar->mutex); | |
1285 | } | |
1286 | ||
1287 | static int carl9170_op_ampdu_action(struct ieee80211_hw *hw, | |
1288 | struct ieee80211_vif *vif, | |
1289 | enum ieee80211_ampdu_mlme_action action, | |
1290 | struct ieee80211_sta *sta, | |
0b01f030 | 1291 | u16 tid, u16 *ssn, u8 buf_size) |
fe8ee9ad CL |
1292 | { |
1293 | struct ar9170 *ar = hw->priv; | |
1294 | struct carl9170_sta_info *sta_info = (void *) sta->drv_priv; | |
1295 | struct carl9170_sta_tid *tid_info; | |
1296 | ||
1297 | if (modparam_noht) | |
1298 | return -EOPNOTSUPP; | |
1299 | ||
1300 | switch (action) { | |
1301 | case IEEE80211_AMPDU_TX_START: | |
9c655c8b | 1302 | if (!sta_info->ht_sta) |
fe8ee9ad CL |
1303 | return -EOPNOTSUPP; |
1304 | ||
1305 | rcu_read_lock(); | |
1306 | if (rcu_dereference(sta_info->agg[tid])) { | |
1307 | rcu_read_unlock(); | |
1308 | return -EBUSY; | |
1309 | } | |
1310 | ||
1311 | tid_info = kzalloc(sizeof(struct carl9170_sta_tid), | |
1312 | GFP_ATOMIC); | |
1313 | if (!tid_info) { | |
1314 | rcu_read_unlock(); | |
1315 | return -ENOMEM; | |
1316 | } | |
1317 | ||
1318 | tid_info->hsn = tid_info->bsn = tid_info->snx = (*ssn); | |
1319 | tid_info->state = CARL9170_TID_STATE_PROGRESS; | |
1320 | tid_info->tid = tid; | |
1321 | tid_info->max = sta_info->ampdu_max_len; | |
1322 | ||
1323 | INIT_LIST_HEAD(&tid_info->list); | |
1324 | INIT_LIST_HEAD(&tid_info->tmp_list); | |
1325 | skb_queue_head_init(&tid_info->queue); | |
1326 | spin_lock_init(&tid_info->lock); | |
1327 | ||
1328 | spin_lock_bh(&ar->tx_ampdu_list_lock); | |
1329 | ar->tx_ampdu_list_len++; | |
1330 | list_add_tail_rcu(&tid_info->list, &ar->tx_ampdu_list); | |
1331 | rcu_assign_pointer(sta_info->agg[tid], tid_info); | |
1332 | spin_unlock_bh(&ar->tx_ampdu_list_lock); | |
1333 | rcu_read_unlock(); | |
1334 | ||
1335 | ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1336 | break; | |
1337 | ||
1338 | case IEEE80211_AMPDU_TX_STOP: | |
1339 | rcu_read_lock(); | |
1340 | tid_info = rcu_dereference(sta_info->agg[tid]); | |
1341 | if (tid_info) { | |
1342 | spin_lock_bh(&ar->tx_ampdu_list_lock); | |
1343 | if (tid_info->state > CARL9170_TID_STATE_SHUTDOWN) | |
1344 | tid_info->state = CARL9170_TID_STATE_SHUTDOWN; | |
1345 | spin_unlock_bh(&ar->tx_ampdu_list_lock); | |
1346 | } | |
1347 | ||
1348 | rcu_assign_pointer(sta_info->agg[tid], NULL); | |
1349 | rcu_read_unlock(); | |
1350 | ||
1351 | ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); | |
1352 | ieee80211_queue_work(ar->hw, &ar->ampdu_work); | |
1353 | break; | |
1354 | ||
1355 | case IEEE80211_AMPDU_TX_OPERATIONAL: | |
1356 | rcu_read_lock(); | |
1357 | tid_info = rcu_dereference(sta_info->agg[tid]); | |
1358 | ||
1359 | sta_info->stats[tid].clear = true; | |
24047e2c | 1360 | sta_info->stats[tid].req = false; |
fe8ee9ad CL |
1361 | |
1362 | if (tid_info) { | |
1363 | bitmap_zero(tid_info->bitmap, CARL9170_BAW_SIZE); | |
1364 | tid_info->state = CARL9170_TID_STATE_IDLE; | |
1365 | } | |
1366 | rcu_read_unlock(); | |
1367 | ||
1368 | if (WARN_ON_ONCE(!tid_info)) | |
1369 | return -EFAULT; | |
1370 | ||
1371 | break; | |
1372 | ||
1373 | case IEEE80211_AMPDU_RX_START: | |
1374 | case IEEE80211_AMPDU_RX_STOP: | |
1375 | /* Handled by hardware */ | |
1376 | break; | |
1377 | ||
1378 | default: | |
1379 | return -EOPNOTSUPP; | |
1380 | } | |
1381 | ||
1382 | return 0; | |
1383 | } | |
1384 | ||
1385 | #ifdef CONFIG_CARL9170_WPC | |
1386 | static int carl9170_register_wps_button(struct ar9170 *ar) | |
1387 | { | |
1388 | struct input_dev *input; | |
1389 | int err; | |
1390 | ||
1391 | if (!(ar->features & CARL9170_WPS_BUTTON)) | |
1392 | return 0; | |
1393 | ||
1394 | input = input_allocate_device(); | |
1395 | if (!input) | |
1396 | return -ENOMEM; | |
1397 | ||
1398 | snprintf(ar->wps.name, sizeof(ar->wps.name), "%s WPS Button", | |
1399 | wiphy_name(ar->hw->wiphy)); | |
1400 | ||
1401 | snprintf(ar->wps.phys, sizeof(ar->wps.phys), | |
1402 | "ieee80211/%s/input0", wiphy_name(ar->hw->wiphy)); | |
1403 | ||
1404 | input->name = ar->wps.name; | |
1405 | input->phys = ar->wps.phys; | |
1406 | input->id.bustype = BUS_USB; | |
1407 | input->dev.parent = &ar->hw->wiphy->dev; | |
1408 | ||
1409 | input_set_capability(input, EV_KEY, KEY_WPS_BUTTON); | |
1410 | ||
1411 | err = input_register_device(input); | |
1412 | if (err) { | |
1413 | input_free_device(input); | |
1414 | return err; | |
1415 | } | |
1416 | ||
1417 | ar->wps.pbc = input; | |
1418 | return 0; | |
1419 | } | |
1420 | #endif /* CONFIG_CARL9170_WPC */ | |
1421 | ||
1422 | static int carl9170_op_get_survey(struct ieee80211_hw *hw, int idx, | |
1423 | struct survey_info *survey) | |
1424 | { | |
1425 | struct ar9170 *ar = hw->priv; | |
1426 | int err; | |
1427 | ||
1428 | if (idx != 0) | |
1429 | return -ENOENT; | |
1430 | ||
1431 | mutex_lock(&ar->mutex); | |
1432 | err = carl9170_get_noisefloor(ar); | |
1433 | mutex_unlock(&ar->mutex); | |
1434 | if (err) | |
1435 | return err; | |
1436 | ||
1437 | survey->channel = ar->channel; | |
1438 | survey->filled = SURVEY_INFO_NOISE_DBM; | |
1439 | survey->noise = ar->noise[0]; | |
1440 | return 0; | |
1441 | } | |
1442 | ||
1443 | static void carl9170_op_flush(struct ieee80211_hw *hw, bool drop) | |
1444 | { | |
1445 | struct ar9170 *ar = hw->priv; | |
1446 | unsigned int vid; | |
1447 | ||
1448 | mutex_lock(&ar->mutex); | |
1449 | for_each_set_bit(vid, &ar->vif_bitmap, ar->fw.vif_num) | |
1450 | carl9170_flush_cab(ar, vid); | |
1451 | ||
1452 | carl9170_flush(ar, drop); | |
1453 | mutex_unlock(&ar->mutex); | |
1454 | } | |
1455 | ||
1456 | static int carl9170_op_get_stats(struct ieee80211_hw *hw, | |
1457 | struct ieee80211_low_level_stats *stats) | |
1458 | { | |
1459 | struct ar9170 *ar = hw->priv; | |
1460 | ||
1461 | memset(stats, 0, sizeof(*stats)); | |
1462 | stats->dot11ACKFailureCount = ar->tx_ack_failures; | |
1463 | stats->dot11FCSErrorCount = ar->tx_fcs_errors; | |
1464 | return 0; | |
1465 | } | |
1466 | ||
1467 | static void carl9170_op_sta_notify(struct ieee80211_hw *hw, | |
1468 | struct ieee80211_vif *vif, | |
1469 | enum sta_notify_cmd cmd, | |
1470 | struct ieee80211_sta *sta) | |
1471 | { | |
fe8ee9ad | 1472 | struct carl9170_sta_info *sta_info = (void *) sta->drv_priv; |
fe8ee9ad CL |
1473 | |
1474 | switch (cmd) { | |
1475 | case STA_NOTIFY_SLEEP: | |
caf1eae2 CL |
1476 | sta_info->sleeping = true; |
1477 | if (atomic_read(&sta_info->pending_frames)) | |
1478 | ieee80211_sta_block_awake(hw, sta, true); | |
fe8ee9ad CL |
1479 | break; |
1480 | ||
1481 | case STA_NOTIFY_AWAKE: | |
caf1eae2 | 1482 | sta_info->sleeping = false; |
fe8ee9ad CL |
1483 | break; |
1484 | } | |
1485 | } | |
1486 | ||
1487 | static const struct ieee80211_ops carl9170_ops = { | |
1488 | .start = carl9170_op_start, | |
1489 | .stop = carl9170_op_stop, | |
1490 | .tx = carl9170_op_tx, | |
1491 | .flush = carl9170_op_flush, | |
1492 | .add_interface = carl9170_op_add_interface, | |
1493 | .remove_interface = carl9170_op_remove_interface, | |
1494 | .config = carl9170_op_config, | |
1495 | .prepare_multicast = carl9170_op_prepare_multicast, | |
1496 | .configure_filter = carl9170_op_configure_filter, | |
1497 | .conf_tx = carl9170_op_conf_tx, | |
1498 | .bss_info_changed = carl9170_op_bss_info_changed, | |
1499 | .get_tsf = carl9170_op_get_tsf, | |
1500 | .set_key = carl9170_op_set_key, | |
1501 | .sta_add = carl9170_op_sta_add, | |
1502 | .sta_remove = carl9170_op_sta_remove, | |
1503 | .sta_notify = carl9170_op_sta_notify, | |
1504 | .get_survey = carl9170_op_get_survey, | |
1505 | .get_stats = carl9170_op_get_stats, | |
1506 | .ampdu_action = carl9170_op_ampdu_action, | |
1507 | }; | |
1508 | ||
1509 | void *carl9170_alloc(size_t priv_size) | |
1510 | { | |
1511 | struct ieee80211_hw *hw; | |
1512 | struct ar9170 *ar; | |
1513 | struct sk_buff *skb; | |
1514 | int i; | |
1515 | ||
1516 | /* | |
1517 | * this buffer is used for rx stream reconstruction. | |
1518 | * Under heavy load this device (or the transport layer?) | |
1519 | * tends to split the streams into separate rx descriptors. | |
1520 | */ | |
1521 | ||
1522 | skb = __dev_alloc_skb(AR9170_RX_STREAM_MAX_SIZE, GFP_KERNEL); | |
1523 | if (!skb) | |
1524 | goto err_nomem; | |
1525 | ||
1526 | hw = ieee80211_alloc_hw(priv_size, &carl9170_ops); | |
1527 | if (!hw) | |
1528 | goto err_nomem; | |
1529 | ||
1530 | ar = hw->priv; | |
1531 | ar->hw = hw; | |
1532 | ar->rx_failover = skb; | |
1533 | ||
1534 | memset(&ar->rx_plcp, 0, sizeof(struct ar9170_rx_head)); | |
1535 | ar->rx_has_plcp = false; | |
1536 | ||
1537 | /* | |
1538 | * Here's a hidden pitfall! | |
1539 | * | |
1540 | * All 4 AC queues work perfectly well under _legacy_ operation. | |
1541 | * However as soon as aggregation is enabled, the traffic flow | |
1542 | * gets very bumpy. Therefore we have to _switch_ to a | |
1543 | * software AC with a single HW queue. | |
1544 | */ | |
1545 | hw->queues = __AR9170_NUM_TXQ; | |
1546 | ||
1547 | mutex_init(&ar->mutex); | |
1548 | spin_lock_init(&ar->beacon_lock); | |
1549 | spin_lock_init(&ar->cmd_lock); | |
1550 | spin_lock_init(&ar->tx_stats_lock); | |
1551 | spin_lock_init(&ar->tx_ampdu_list_lock); | |
1552 | spin_lock_init(&ar->mem_lock); | |
1553 | spin_lock_init(&ar->state_lock); | |
1554 | atomic_set(&ar->pending_restarts, 0); | |
1555 | ar->vifs = 0; | |
1556 | for (i = 0; i < ar->hw->queues; i++) { | |
1557 | skb_queue_head_init(&ar->tx_status[i]); | |
1558 | skb_queue_head_init(&ar->tx_pending[i]); | |
1559 | } | |
1560 | INIT_WORK(&ar->ps_work, carl9170_ps_work); | |
e4a668c5 | 1561 | INIT_WORK(&ar->ping_work, carl9170_ping_work); |
fe8ee9ad CL |
1562 | INIT_WORK(&ar->restart_work, carl9170_restart_work); |
1563 | INIT_WORK(&ar->ampdu_work, carl9170_ampdu_work); | |
1564 | INIT_DELAYED_WORK(&ar->tx_janitor, carl9170_tx_janitor); | |
1565 | INIT_LIST_HEAD(&ar->tx_ampdu_list); | |
1566 | rcu_assign_pointer(ar->tx_ampdu_iter, | |
1567 | (struct carl9170_sta_tid *) &ar->tx_ampdu_list); | |
1568 | ||
1569 | bitmap_zero(&ar->vif_bitmap, ar->fw.vif_num); | |
1570 | INIT_LIST_HEAD(&ar->vif_list); | |
1571 | init_completion(&ar->tx_flush); | |
1572 | ||
1573 | /* | |
1574 | * Note: | |
1575 | * IBSS/ADHOC and AP mode are only enabled, if the firmware | |
1576 | * supports these modes. The code which will add the | |
1577 | * additional interface_modes is in fw.c. | |
1578 | */ | |
c426ee24 JB |
1579 | hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | |
1580 | BIT(NL80211_IFTYPE_P2P_CLIENT); | |
fe8ee9ad CL |
1581 | |
1582 | hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS | | |
1583 | IEEE80211_HW_REPORTS_TX_ACK_STATUS | | |
1584 | IEEE80211_HW_SUPPORTS_PS | | |
1585 | IEEE80211_HW_PS_NULLFUNC_STACK | | |
1586 | IEEE80211_HW_SIGNAL_DBM; | |
1587 | ||
1588 | if (!modparam_noht) { | |
1589 | /* | |
1590 | * see the comment above, why we allow the user | |
1591 | * to disable HT by a module parameter. | |
1592 | */ | |
1593 | hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; | |
1594 | } | |
1595 | ||
1596 | hw->extra_tx_headroom = sizeof(struct _carl9170_tx_superframe); | |
1597 | hw->sta_data_size = sizeof(struct carl9170_sta_info); | |
1598 | hw->vif_data_size = sizeof(struct carl9170_vif_info); | |
1599 | ||
1600 | hw->max_rates = CARL9170_TX_MAX_RATES; | |
1601 | hw->max_rate_tries = CARL9170_TX_USER_RATE_TRIES; | |
1602 | ||
1603 | for (i = 0; i < ARRAY_SIZE(ar->noise); i++) | |
1604 | ar->noise[i] = -95; /* ATH_DEFAULT_NOISE_FLOOR */ | |
1605 | ||
1606 | hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; | |
1607 | return ar; | |
1608 | ||
1609 | err_nomem: | |
1610 | kfree_skb(skb); | |
1611 | return ERR_PTR(-ENOMEM); | |
1612 | } | |
1613 | ||
1614 | static int carl9170_read_eeprom(struct ar9170 *ar) | |
1615 | { | |
1616 | #define RW 8 /* number of words to read at once */ | |
1617 | #define RB (sizeof(u32) * RW) | |
1618 | u8 *eeprom = (void *)&ar->eeprom; | |
1619 | __le32 offsets[RW]; | |
1620 | int i, j, err; | |
1621 | ||
1622 | BUILD_BUG_ON(sizeof(ar->eeprom) & 3); | |
1623 | ||
1624 | BUILD_BUG_ON(RB > CARL9170_MAX_CMD_LEN - 4); | |
1625 | #ifndef __CHECKER__ | |
1626 | /* don't want to handle trailing remains */ | |
1627 | BUILD_BUG_ON(sizeof(ar->eeprom) % RB); | |
1628 | #endif | |
1629 | ||
1630 | for (i = 0; i < sizeof(ar->eeprom)/RB; i++) { | |
1631 | for (j = 0; j < RW; j++) | |
1632 | offsets[j] = cpu_to_le32(AR9170_EEPROM_START + | |
1633 | RB * i + 4 * j); | |
1634 | ||
1635 | err = carl9170_exec_cmd(ar, CARL9170_CMD_RREG, | |
1636 | RB, (u8 *) &offsets, | |
1637 | RB, eeprom + RB * i); | |
1638 | if (err) | |
1639 | return err; | |
1640 | } | |
1641 | ||
1642 | #undef RW | |
1643 | #undef RB | |
1644 | return 0; | |
1645 | } | |
1646 | ||
1647 | static int carl9170_parse_eeprom(struct ar9170 *ar) | |
1648 | { | |
1649 | struct ath_regulatory *regulatory = &ar->common.regulatory; | |
1650 | unsigned int rx_streams, tx_streams, tx_params = 0; | |
1651 | int bands = 0; | |
1652 | ||
1653 | if (ar->eeprom.length == cpu_to_le16(0xffff)) | |
1654 | return -ENODATA; | |
1655 | ||
1656 | rx_streams = hweight8(ar->eeprom.rx_mask); | |
1657 | tx_streams = hweight8(ar->eeprom.tx_mask); | |
1658 | ||
1659 | if (rx_streams != tx_streams) { | |
1660 | tx_params = IEEE80211_HT_MCS_TX_RX_DIFF; | |
1661 | ||
1662 | WARN_ON(!(tx_streams >= 1 && tx_streams <= | |
1663 | IEEE80211_HT_MCS_TX_MAX_STREAMS)); | |
1664 | ||
1665 | tx_params = (tx_streams - 1) << | |
1666 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; | |
1667 | ||
1668 | carl9170_band_2GHz.ht_cap.mcs.tx_params |= tx_params; | |
1669 | carl9170_band_5GHz.ht_cap.mcs.tx_params |= tx_params; | |
1670 | } | |
1671 | ||
1672 | if (ar->eeprom.operating_flags & AR9170_OPFLAG_2GHZ) { | |
1673 | ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = | |
1674 | &carl9170_band_2GHz; | |
1675 | bands++; | |
1676 | } | |
1677 | if (ar->eeprom.operating_flags & AR9170_OPFLAG_5GHZ) { | |
1678 | ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = | |
1679 | &carl9170_band_5GHz; | |
1680 | bands++; | |
1681 | } | |
1682 | ||
1683 | /* | |
1684 | * I measured this, a bandswitch takes roughly | |
1685 | * 135 ms and a frequency switch about 80. | |
1686 | * | |
1687 | * FIXME: measure these values again once EEPROM settings | |
1688 | * are used, that will influence them! | |
1689 | */ | |
1690 | if (bands == 2) | |
1691 | ar->hw->channel_change_time = 135 * 1000; | |
1692 | else | |
1693 | ar->hw->channel_change_time = 80 * 1000; | |
1694 | ||
1695 | regulatory->current_rd = le16_to_cpu(ar->eeprom.reg_domain[0]); | |
1696 | regulatory->current_rd_ext = le16_to_cpu(ar->eeprom.reg_domain[1]); | |
1697 | ||
1698 | /* second part of wiphy init */ | |
1699 | SET_IEEE80211_PERM_ADDR(ar->hw, ar->eeprom.mac_address); | |
1700 | ||
1701 | return bands ? 0 : -EINVAL; | |
1702 | } | |
1703 | ||
1704 | static int carl9170_reg_notifier(struct wiphy *wiphy, | |
1705 | struct regulatory_request *request) | |
1706 | { | |
1707 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
1708 | struct ar9170 *ar = hw->priv; | |
1709 | ||
1710 | return ath_reg_notifier_apply(wiphy, request, &ar->common.regulatory); | |
1711 | } | |
1712 | ||
1713 | int carl9170_register(struct ar9170 *ar) | |
1714 | { | |
1715 | struct ath_regulatory *regulatory = &ar->common.regulatory; | |
1716 | int err = 0, i; | |
1717 | ||
1718 | if (WARN_ON(ar->mem_bitmap)) | |
1719 | return -EINVAL; | |
1720 | ||
1721 | ar->mem_bitmap = kzalloc(roundup(ar->fw.mem_blocks, BITS_PER_LONG) * | |
1722 | sizeof(unsigned long), GFP_KERNEL); | |
1723 | ||
1724 | if (!ar->mem_bitmap) | |
1725 | return -ENOMEM; | |
1726 | ||
1727 | /* try to read EEPROM, init MAC addr */ | |
1728 | err = carl9170_read_eeprom(ar); | |
1729 | if (err) | |
1730 | return err; | |
1731 | ||
1732 | err = carl9170_fw_fix_eeprom(ar); | |
1733 | if (err) | |
1734 | return err; | |
1735 | ||
1736 | err = carl9170_parse_eeprom(ar); | |
1737 | if (err) | |
1738 | return err; | |
1739 | ||
1740 | err = ath_regd_init(regulatory, ar->hw->wiphy, | |
1741 | carl9170_reg_notifier); | |
1742 | if (err) | |
1743 | return err; | |
1744 | ||
1745 | if (modparam_noht) { | |
1746 | carl9170_band_2GHz.ht_cap.ht_supported = false; | |
1747 | carl9170_band_5GHz.ht_cap.ht_supported = false; | |
1748 | } | |
1749 | ||
1750 | for (i = 0; i < ar->fw.vif_num; i++) { | |
1751 | ar->vif_priv[i].id = i; | |
1752 | ar->vif_priv[i].vif = NULL; | |
1753 | } | |
1754 | ||
1755 | err = ieee80211_register_hw(ar->hw); | |
1756 | if (err) | |
1757 | return err; | |
1758 | ||
1759 | /* mac80211 interface is now registered */ | |
1760 | ar->registered = true; | |
1761 | ||
1762 | if (!ath_is_world_regd(regulatory)) | |
1763 | regulatory_hint(ar->hw->wiphy, regulatory->alpha2); | |
1764 | ||
1765 | #ifdef CONFIG_CARL9170_DEBUGFS | |
1766 | carl9170_debugfs_register(ar); | |
1767 | #endif /* CONFIG_CARL9170_DEBUGFS */ | |
1768 | ||
1769 | err = carl9170_led_init(ar); | |
1770 | if (err) | |
1771 | goto err_unreg; | |
1772 | ||
1773 | #ifdef CONFIG_CARL9170_LEDS | |
1774 | err = carl9170_led_register(ar); | |
1775 | if (err) | |
1776 | goto err_unreg; | |
8e7ce893 | 1777 | #endif /* CONFIG_CARL9170_LEDS */ |
fe8ee9ad CL |
1778 | |
1779 | #ifdef CONFIG_CARL9170_WPC | |
1780 | err = carl9170_register_wps_button(ar); | |
1781 | if (err) | |
1782 | goto err_unreg; | |
1783 | #endif /* CONFIG_CARL9170_WPC */ | |
1784 | ||
1785 | dev_info(&ar->udev->dev, "Atheros AR9170 is registered as '%s'\n", | |
1786 | wiphy_name(ar->hw->wiphy)); | |
1787 | ||
1788 | return 0; | |
1789 | ||
1790 | err_unreg: | |
1791 | carl9170_unregister(ar); | |
1792 | return err; | |
1793 | } | |
1794 | ||
1795 | void carl9170_unregister(struct ar9170 *ar) | |
1796 | { | |
1797 | if (!ar->registered) | |
1798 | return; | |
1799 | ||
1800 | ar->registered = false; | |
1801 | ||
1802 | #ifdef CONFIG_CARL9170_LEDS | |
1803 | carl9170_led_unregister(ar); | |
1804 | #endif /* CONFIG_CARL9170_LEDS */ | |
1805 | ||
1806 | #ifdef CONFIG_CARL9170_DEBUGFS | |
1807 | carl9170_debugfs_unregister(ar); | |
1808 | #endif /* CONFIG_CARL9170_DEBUGFS */ | |
1809 | ||
1810 | #ifdef CONFIG_CARL9170_WPC | |
1811 | if (ar->wps.pbc) { | |
1812 | input_unregister_device(ar->wps.pbc); | |
1813 | ar->wps.pbc = NULL; | |
1814 | } | |
1815 | #endif /* CONFIG_CARL9170_WPC */ | |
1816 | ||
1817 | carl9170_cancel_worker(ar); | |
1818 | cancel_work_sync(&ar->restart_work); | |
1819 | ||
1820 | ieee80211_unregister_hw(ar->hw); | |
1821 | } | |
1822 | ||
1823 | void carl9170_free(struct ar9170 *ar) | |
1824 | { | |
1825 | WARN_ON(ar->registered); | |
1826 | WARN_ON(IS_INITIALIZED(ar)); | |
1827 | ||
1828 | kfree_skb(ar->rx_failover); | |
1829 | ar->rx_failover = NULL; | |
1830 | ||
1831 | kfree(ar->mem_bitmap); | |
1832 | ar->mem_bitmap = NULL; | |
1833 | ||
1834 | mutex_destroy(&ar->mutex); | |
1835 | ||
1836 | ieee80211_free_hw(ar->hw); | |
1837 | } |