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e9348cdd CL |
1 | /* |
2 | * Atheros AR9170 driver | |
3 | * | |
4 | * mac80211 interaction code | |
5 | * | |
6 | * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> | |
7 | * Copyright 2009, Christian Lamparter <chunkeey@web.de> | |
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 | ||
e9348cdd CL |
40 | #include <linux/init.h> |
41 | #include <linux/module.h> | |
42 | #include <linux/etherdevice.h> | |
43 | #include <net/mac80211.h> | |
44 | #include "ar9170.h" | |
45 | #include "hw.h" | |
46 | #include "cmd.h" | |
47 | ||
48 | static int modparam_nohwcrypt; | |
49 | module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); | |
50 | MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); | |
e9348cdd CL |
51 | |
52 | #define RATE(_bitrate, _hw_rate, _txpidx, _flags) { \ | |
53 | .bitrate = (_bitrate), \ | |
54 | .flags = (_flags), \ | |
55 | .hw_value = (_hw_rate) | (_txpidx) << 4, \ | |
56 | } | |
57 | ||
58 | static struct ieee80211_rate __ar9170_ratetable[] = { | |
59 | RATE(10, 0, 0, 0), | |
60 | RATE(20, 1, 1, IEEE80211_RATE_SHORT_PREAMBLE), | |
61 | RATE(55, 2, 2, IEEE80211_RATE_SHORT_PREAMBLE), | |
62 | RATE(110, 3, 3, IEEE80211_RATE_SHORT_PREAMBLE), | |
63 | RATE(60, 0xb, 0, 0), | |
64 | RATE(90, 0xf, 0, 0), | |
65 | RATE(120, 0xa, 0, 0), | |
66 | RATE(180, 0xe, 0, 0), | |
67 | RATE(240, 0x9, 0, 0), | |
68 | RATE(360, 0xd, 1, 0), | |
69 | RATE(480, 0x8, 2, 0), | |
70 | RATE(540, 0xc, 3, 0), | |
71 | }; | |
72 | #undef RATE | |
73 | ||
74 | #define ar9170_g_ratetable (__ar9170_ratetable + 0) | |
75 | #define ar9170_g_ratetable_size 12 | |
76 | #define ar9170_a_ratetable (__ar9170_ratetable + 4) | |
77 | #define ar9170_a_ratetable_size 8 | |
78 | ||
79 | /* | |
80 | * NB: The hw_value is used as an index into the ar9170_phy_freq_params | |
81 | * array in phy.c so that we don't have to do frequency lookups! | |
82 | */ | |
83 | #define CHAN(_freq, _idx) { \ | |
84 | .center_freq = (_freq), \ | |
85 | .hw_value = (_idx), \ | |
86 | .max_power = 18, /* XXX */ \ | |
87 | } | |
88 | ||
89 | static struct ieee80211_channel ar9170_2ghz_chantable[] = { | |
90 | CHAN(2412, 0), | |
91 | CHAN(2417, 1), | |
92 | CHAN(2422, 2), | |
93 | CHAN(2427, 3), | |
94 | CHAN(2432, 4), | |
95 | CHAN(2437, 5), | |
96 | CHAN(2442, 6), | |
97 | CHAN(2447, 7), | |
98 | CHAN(2452, 8), | |
99 | CHAN(2457, 9), | |
100 | CHAN(2462, 10), | |
101 | CHAN(2467, 11), | |
102 | CHAN(2472, 12), | |
103 | CHAN(2484, 13), | |
104 | }; | |
105 | ||
106 | static struct ieee80211_channel ar9170_5ghz_chantable[] = { | |
107 | CHAN(4920, 14), | |
108 | CHAN(4940, 15), | |
109 | CHAN(4960, 16), | |
110 | CHAN(4980, 17), | |
111 | CHAN(5040, 18), | |
112 | CHAN(5060, 19), | |
113 | CHAN(5080, 20), | |
114 | CHAN(5180, 21), | |
115 | CHAN(5200, 22), | |
116 | CHAN(5220, 23), | |
117 | CHAN(5240, 24), | |
118 | CHAN(5260, 25), | |
119 | CHAN(5280, 26), | |
120 | CHAN(5300, 27), | |
121 | CHAN(5320, 28), | |
122 | CHAN(5500, 29), | |
123 | CHAN(5520, 30), | |
124 | CHAN(5540, 31), | |
125 | CHAN(5560, 32), | |
126 | CHAN(5580, 33), | |
127 | CHAN(5600, 34), | |
128 | CHAN(5620, 35), | |
129 | CHAN(5640, 36), | |
130 | CHAN(5660, 37), | |
131 | CHAN(5680, 38), | |
132 | CHAN(5700, 39), | |
133 | CHAN(5745, 40), | |
134 | CHAN(5765, 41), | |
135 | CHAN(5785, 42), | |
136 | CHAN(5805, 43), | |
137 | CHAN(5825, 44), | |
138 | CHAN(5170, 45), | |
139 | CHAN(5190, 46), | |
140 | CHAN(5210, 47), | |
141 | CHAN(5230, 48), | |
142 | }; | |
143 | #undef CHAN | |
144 | ||
145 | static struct ieee80211_supported_band ar9170_band_2GHz = { | |
146 | .channels = ar9170_2ghz_chantable, | |
147 | .n_channels = ARRAY_SIZE(ar9170_2ghz_chantable), | |
148 | .bitrates = ar9170_g_ratetable, | |
149 | .n_bitrates = ar9170_g_ratetable_size, | |
150 | }; | |
151 | ||
152 | #ifdef AR9170_QUEUE_DEBUG | |
153 | /* | |
154 | * In case some wants works with AR9170's crazy tx_status queueing techniques. | |
155 | * He might need this rather useful probing function. | |
156 | * | |
157 | * NOTE: caller must hold the queue's spinlock! | |
158 | */ | |
159 | ||
160 | static void ar9170_print_txheader(struct ar9170 *ar, struct sk_buff *skb) | |
161 | { | |
162 | struct ar9170_tx_control *txc = (void *) skb->data; | |
163 | struct ieee80211_hdr *hdr = (void *)txc->frame_data; | |
164 | ||
165 | printk(KERN_DEBUG "%s: => FRAME [skb:%p, queue:%d, DA:[%pM] " | |
166 | "mac_control:%04x, phy_control:%08x]\n", | |
167 | wiphy_name(ar->hw->wiphy), skb, skb_get_queue_mapping(skb), | |
168 | ieee80211_get_DA(hdr), le16_to_cpu(txc->mac_control), | |
169 | le32_to_cpu(txc->phy_control)); | |
170 | } | |
171 | ||
172 | static void ar9170_dump_station_tx_status_queue(struct ar9170 *ar, | |
173 | struct sk_buff_head *queue) | |
174 | { | |
175 | struct sk_buff *skb; | |
176 | int i = 0; | |
177 | ||
178 | printk(KERN_DEBUG "---[ cut here ]---\n"); | |
179 | printk(KERN_DEBUG "%s: %d entries in tx_status queue.\n", | |
180 | wiphy_name(ar->hw->wiphy), skb_queue_len(queue)); | |
181 | ||
182 | skb_queue_walk(queue, skb) { | |
183 | struct ar9170_tx_control *txc = (void *) skb->data; | |
184 | struct ieee80211_hdr *hdr = (void *)txc->frame_data; | |
185 | ||
186 | printk(KERN_DEBUG "index:%d => \n", i); | |
187 | ar9170_print_txheader(ar, skb); | |
188 | } | |
189 | printk(KERN_DEBUG "---[ end ]---\n"); | |
190 | } | |
191 | #endif /* AR9170_QUEUE_DEBUG */ | |
192 | ||
193 | static struct ieee80211_supported_band ar9170_band_5GHz = { | |
194 | .channels = ar9170_5ghz_chantable, | |
195 | .n_channels = ARRAY_SIZE(ar9170_5ghz_chantable), | |
196 | .bitrates = ar9170_a_ratetable, | |
197 | .n_bitrates = ar9170_a_ratetable_size, | |
198 | }; | |
199 | ||
200 | void ar9170_handle_tx_status(struct ar9170 *ar, struct sk_buff *skb, | |
201 | bool valid_status, u16 tx_status) | |
202 | { | |
203 | struct ieee80211_tx_info *txinfo; | |
204 | unsigned int retries = 0, queue = skb_get_queue_mapping(skb); | |
205 | unsigned long flags; | |
206 | ||
207 | spin_lock_irqsave(&ar->tx_stats_lock, flags); | |
208 | ar->tx_stats[queue].len--; | |
209 | if (ieee80211_queue_stopped(ar->hw, queue)) | |
210 | ieee80211_wake_queue(ar->hw, queue); | |
211 | spin_unlock_irqrestore(&ar->tx_stats_lock, flags); | |
212 | ||
213 | txinfo = IEEE80211_SKB_CB(skb); | |
214 | ieee80211_tx_info_clear_status(txinfo); | |
215 | ||
216 | switch (tx_status) { | |
217 | case AR9170_TX_STATUS_RETRY: | |
218 | retries = 2; | |
219 | case AR9170_TX_STATUS_COMPLETE: | |
220 | txinfo->flags |= IEEE80211_TX_STAT_ACK; | |
221 | break; | |
222 | ||
223 | case AR9170_TX_STATUS_FAILED: | |
224 | retries = ar->hw->conf.long_frame_max_tx_count; | |
225 | break; | |
226 | ||
227 | default: | |
228 | printk(KERN_ERR "%s: invalid tx_status response (%x).\n", | |
229 | wiphy_name(ar->hw->wiphy), tx_status); | |
230 | break; | |
231 | } | |
232 | ||
233 | if (valid_status) | |
234 | txinfo->status.rates[0].count = retries + 1; | |
235 | ||
236 | skb_pull(skb, sizeof(struct ar9170_tx_control)); | |
237 | ieee80211_tx_status_irqsafe(ar->hw, skb); | |
238 | } | |
e9348cdd CL |
239 | |
240 | static struct sk_buff *ar9170_find_skb_in_queue(struct ar9170 *ar, | |
241 | const u8 *mac, | |
242 | const u32 queue, | |
243 | struct sk_buff_head *q) | |
244 | { | |
245 | unsigned long flags; | |
246 | struct sk_buff *skb; | |
247 | ||
248 | spin_lock_irqsave(&q->lock, flags); | |
249 | skb_queue_walk(q, skb) { | |
250 | struct ar9170_tx_control *txc = (void *) skb->data; | |
251 | struct ieee80211_hdr *hdr = (void *) txc->frame_data; | |
252 | u32 txc_queue = (le32_to_cpu(txc->phy_control) & | |
253 | AR9170_TX_PHY_QOS_MASK) >> | |
254 | AR9170_TX_PHY_QOS_SHIFT; | |
255 | ||
256 | if ((queue != txc_queue) || | |
257 | (compare_ether_addr(ieee80211_get_DA(hdr), mac))) | |
258 | continue; | |
259 | ||
260 | __skb_unlink(skb, q); | |
261 | spin_unlock_irqrestore(&q->lock, flags); | |
262 | return skb; | |
263 | } | |
264 | spin_unlock_irqrestore(&q->lock, flags); | |
265 | return NULL; | |
266 | } | |
267 | ||
e9348cdd CL |
268 | static struct sk_buff *ar9170_find_queued_skb(struct ar9170 *ar, const u8 *mac, |
269 | const u32 queue) | |
270 | { | |
271 | struct ieee80211_sta *sta; | |
272 | struct sk_buff *skb; | |
273 | ||
274 | /* | |
275 | * Unfortunately, the firmware does not tell to which (queued) frame | |
276 | * this transmission status report belongs to. | |
277 | * | |
278 | * So we have to make risky guesses - with the scarce information | |
279 | * the firmware provided (-> destination MAC, and phy_control) - | |
280 | * and hope that we picked the right one... | |
281 | */ | |
282 | rcu_read_lock(); | |
283 | sta = ieee80211_find_sta(ar->hw, mac); | |
284 | ||
285 | if (likely(sta)) { | |
286 | struct ar9170_sta_info *sta_priv = (void *) sta->drv_priv; | |
4a48e2a4 CL |
287 | skb = skb_dequeue(&sta_priv->tx_status[queue]); |
288 | rcu_read_unlock(); | |
289 | if (likely(skb)) | |
290 | return skb; | |
291 | } else | |
292 | rcu_read_unlock(); | |
e9348cdd | 293 | |
4a48e2a4 CL |
294 | /* scan the waste queue for candidates */ |
295 | skb = ar9170_find_skb_in_queue(ar, mac, queue, | |
296 | &ar->global_tx_status_waste); | |
297 | if (!skb) { | |
298 | /* so it still _must_ be in the global list. */ | |
e9348cdd | 299 | skb = ar9170_find_skb_in_queue(ar, mac, queue, |
4a48e2a4 | 300 | &ar->global_tx_status); |
e9348cdd | 301 | } |
e9348cdd CL |
302 | |
303 | #ifdef AR9170_QUEUE_DEBUG | |
304 | if (unlikely((!skb) && net_ratelimit())) { | |
305 | printk(KERN_ERR "%s: ESS:[%pM] does not have any " | |
306 | "outstanding frames in this queue (%d).\n", | |
307 | wiphy_name(ar->hw->wiphy), mac, queue); | |
308 | } | |
309 | #endif /* AR9170_QUEUE_DEBUG */ | |
e9348cdd CL |
310 | return skb; |
311 | } | |
312 | ||
313 | /* | |
314 | * This worker tries to keep the global tx_status queue empty. | |
315 | * So we can guarantee that incoming tx_status reports for | |
316 | * unregistered stations are always synced with the actual | |
317 | * frame - which we think - belongs to. | |
318 | */ | |
319 | ||
320 | static void ar9170_tx_status_janitor(struct work_struct *work) | |
321 | { | |
322 | struct ar9170 *ar = container_of(work, struct ar9170, | |
4a48e2a4 | 323 | tx_status_janitor.work); |
e9348cdd CL |
324 | struct sk_buff *skb; |
325 | ||
4a48e2a4 CL |
326 | if (unlikely(!IS_STARTED(ar))) |
327 | return ; | |
328 | ||
329 | mutex_lock(&ar->mutex); | |
e9348cdd CL |
330 | /* recycle the garbage back to mac80211... one by one. */ |
331 | while ((skb = skb_dequeue(&ar->global_tx_status_waste))) { | |
332 | #ifdef AR9170_QUEUE_DEBUG | |
333 | printk(KERN_DEBUG "%s: dispose queued frame =>\n", | |
334 | wiphy_name(ar->hw->wiphy)); | |
335 | ar9170_print_txheader(ar, skb); | |
336 | #endif /* AR9170_QUEUE_DEBUG */ | |
337 | ar9170_handle_tx_status(ar, skb, false, | |
338 | AR9170_TX_STATUS_FAILED); | |
339 | } | |
340 | ||
e9348cdd CL |
341 | while ((skb = skb_dequeue(&ar->global_tx_status))) { |
342 | #ifdef AR9170_QUEUE_DEBUG | |
343 | printk(KERN_DEBUG "%s: moving frame into waste queue =>\n", | |
344 | wiphy_name(ar->hw->wiphy)); | |
345 | ||
346 | ar9170_print_txheader(ar, skb); | |
347 | #endif /* AR9170_QUEUE_DEBUG */ | |
348 | skb_queue_tail(&ar->global_tx_status_waste, skb); | |
349 | } | |
350 | ||
351 | /* recall the janitor in 100ms - if there's garbage in the can. */ | |
352 | if (skb_queue_len(&ar->global_tx_status_waste) > 0) | |
353 | queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor, | |
354 | msecs_to_jiffies(100)); | |
4a48e2a4 CL |
355 | |
356 | mutex_unlock(&ar->mutex); | |
e9348cdd CL |
357 | } |
358 | ||
359 | static void ar9170_handle_command_response(struct ar9170 *ar, | |
360 | void *buf, u32 len) | |
361 | { | |
362 | struct ar9170_cmd_response *cmd = (void *) buf; | |
363 | ||
364 | if ((cmd->type & 0xc0) != 0xc0) { | |
365 | ar->callback_cmd(ar, len, buf); | |
366 | return; | |
367 | } | |
368 | ||
369 | /* hardware event handlers */ | |
370 | switch (cmd->type) { | |
371 | case 0xc1: { | |
372 | /* | |
373 | * TX status notification: | |
374 | * bytes: 0c c1 XX YY M1 M2 M3 M4 M5 M6 R4 R3 R2 R1 S2 S1 | |
375 | * | |
376 | * XX always 81 | |
377 | * YY always 00 | |
378 | * M1-M6 is the MAC address | |
379 | * R1-R4 is the transmit rate | |
380 | * S1-S2 is the transmit status | |
381 | */ | |
382 | ||
383 | struct sk_buff *skb; | |
384 | u32 queue = (le32_to_cpu(cmd->tx_status.rate) & | |
385 | AR9170_TX_PHY_QOS_MASK) >> AR9170_TX_PHY_QOS_SHIFT; | |
386 | ||
387 | skb = ar9170_find_queued_skb(ar, cmd->tx_status.dst, queue); | |
388 | if (unlikely(!skb)) | |
389 | return ; | |
390 | ||
391 | ar9170_handle_tx_status(ar, skb, true, | |
392 | le16_to_cpu(cmd->tx_status.status)); | |
393 | break; | |
394 | } | |
395 | ||
396 | case 0xc0: | |
397 | /* | |
398 | * pre-TBTT event | |
399 | */ | |
400 | if (ar->vif && ar->vif->type == NL80211_IFTYPE_AP) | |
401 | queue_work(ar->hw->workqueue, &ar->beacon_work); | |
402 | break; | |
403 | ||
404 | case 0xc2: | |
405 | /* | |
406 | * (IBSS) beacon send notification | |
407 | * bytes: 04 c2 XX YY B4 B3 B2 B1 | |
408 | * | |
409 | * XX always 80 | |
410 | * YY always 00 | |
411 | * B1-B4 "should" be the number of send out beacons. | |
412 | */ | |
413 | break; | |
414 | ||
415 | case 0xc3: | |
416 | /* End of Atim Window */ | |
417 | break; | |
418 | ||
419 | case 0xc4: | |
420 | case 0xc5: | |
421 | /* BlockACK events */ | |
422 | break; | |
423 | ||
424 | case 0xc6: | |
425 | /* Watchdog Interrupt */ | |
426 | break; | |
427 | ||
428 | case 0xc9: | |
429 | /* retransmission issue / SIFS/EIFS collision ?! */ | |
430 | break; | |
431 | ||
432 | default: | |
433 | printk(KERN_INFO "received unhandled event %x\n", cmd->type); | |
434 | print_hex_dump_bytes("dump:", DUMP_PREFIX_NONE, buf, len); | |
435 | break; | |
436 | } | |
437 | } | |
438 | ||
439 | /* | |
440 | * If the frame alignment is right (or the kernel has | |
441 | * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS), and there | |
442 | * is only a single MPDU in the USB frame, then we can | |
443 | * submit to mac80211 the SKB directly. However, since | |
444 | * there may be multiple packets in one SKB in stream | |
445 | * mode, and we need to observe the proper ordering, | |
446 | * this is non-trivial. | |
447 | */ | |
448 | static void ar9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len) | |
449 | { | |
450 | struct sk_buff *skb; | |
451 | struct ar9170_rx_head *head = (void *)buf; | |
452 | struct ar9170_rx_tail *tail; | |
453 | struct ieee80211_rx_status status; | |
454 | int mpdu_len, i; | |
455 | u8 error, antennas = 0, decrypt; | |
456 | __le16 fc; | |
457 | int reserved; | |
458 | ||
459 | if (unlikely(!IS_STARTED(ar))) | |
460 | return ; | |
461 | ||
462 | /* Received MPDU */ | |
463 | mpdu_len = len; | |
464 | mpdu_len -= sizeof(struct ar9170_rx_head); | |
465 | mpdu_len -= sizeof(struct ar9170_rx_tail); | |
466 | BUILD_BUG_ON(sizeof(struct ar9170_rx_head) != 12); | |
467 | BUILD_BUG_ON(sizeof(struct ar9170_rx_tail) != 24); | |
468 | ||
469 | if (mpdu_len <= FCS_LEN) | |
470 | return; | |
471 | ||
472 | tail = (void *)(buf + sizeof(struct ar9170_rx_head) + mpdu_len); | |
473 | ||
474 | for (i = 0; i < 3; i++) | |
475 | if (tail->rssi[i] != 0x80) | |
476 | antennas |= BIT(i); | |
477 | ||
478 | /* post-process RSSI */ | |
479 | for (i = 0; i < 7; i++) | |
480 | if (tail->rssi[i] & 0x80) | |
481 | tail->rssi[i] = ((tail->rssi[i] & 0x7f) + 1) & 0x7f; | |
482 | ||
483 | memset(&status, 0, sizeof(status)); | |
484 | ||
485 | status.band = ar->channel->band; | |
486 | status.freq = ar->channel->center_freq; | |
487 | status.signal = ar->noise[0] + tail->rssi_combined; | |
488 | status.noise = ar->noise[0]; | |
489 | status.antenna = antennas; | |
490 | ||
491 | switch (tail->status & AR9170_RX_STATUS_MODULATION_MASK) { | |
492 | case AR9170_RX_STATUS_MODULATION_CCK: | |
493 | if (tail->status & AR9170_RX_STATUS_SHORT_PREAMBLE) | |
494 | status.flag |= RX_FLAG_SHORTPRE; | |
495 | switch (head->plcp[0]) { | |
496 | case 0x0a: | |
497 | status.rate_idx = 0; | |
498 | break; | |
499 | case 0x14: | |
500 | status.rate_idx = 1; | |
501 | break; | |
502 | case 0x37: | |
503 | status.rate_idx = 2; | |
504 | break; | |
505 | case 0x6e: | |
506 | status.rate_idx = 3; | |
507 | break; | |
508 | default: | |
509 | if ((!ar->sniffer_enabled) && (net_ratelimit())) | |
510 | printk(KERN_ERR "%s: invalid plcp cck rate " | |
511 | "(%x).\n", wiphy_name(ar->hw->wiphy), | |
512 | head->plcp[0]); | |
513 | return; | |
514 | } | |
515 | break; | |
516 | case AR9170_RX_STATUS_MODULATION_OFDM: | |
517 | switch (head->plcp[0] & 0xF) { | |
518 | case 0xB: | |
519 | status.rate_idx = 0; | |
520 | break; | |
521 | case 0xF: | |
522 | status.rate_idx = 1; | |
523 | break; | |
524 | case 0xA: | |
525 | status.rate_idx = 2; | |
526 | break; | |
527 | case 0xE: | |
528 | status.rate_idx = 3; | |
529 | break; | |
530 | case 0x9: | |
531 | status.rate_idx = 4; | |
532 | break; | |
533 | case 0xD: | |
534 | status.rate_idx = 5; | |
535 | break; | |
536 | case 0x8: | |
537 | status.rate_idx = 6; | |
538 | break; | |
539 | case 0xC: | |
540 | status.rate_idx = 7; | |
541 | break; | |
542 | default: | |
543 | if ((!ar->sniffer_enabled) && (net_ratelimit())) | |
544 | printk(KERN_ERR "%s: invalid plcp ofdm rate " | |
545 | "(%x).\n", wiphy_name(ar->hw->wiphy), | |
546 | head->plcp[0]); | |
547 | return; | |
548 | } | |
549 | if (status.band == IEEE80211_BAND_2GHZ) | |
550 | status.rate_idx += 4; | |
551 | break; | |
552 | case AR9170_RX_STATUS_MODULATION_HT: | |
553 | case AR9170_RX_STATUS_MODULATION_DUPOFDM: | |
554 | /* XXX */ | |
555 | ||
556 | if (net_ratelimit()) | |
557 | printk(KERN_ERR "%s: invalid modulation\n", | |
558 | wiphy_name(ar->hw->wiphy)); | |
559 | return; | |
560 | } | |
561 | ||
562 | error = tail->error; | |
563 | ||
564 | if (error & AR9170_RX_ERROR_MMIC) { | |
565 | status.flag |= RX_FLAG_MMIC_ERROR; | |
566 | error &= ~AR9170_RX_ERROR_MMIC; | |
567 | } | |
568 | ||
569 | if (error & AR9170_RX_ERROR_PLCP) { | |
570 | status.flag |= RX_FLAG_FAILED_PLCP_CRC; | |
571 | error &= ~AR9170_RX_ERROR_PLCP; | |
572 | } | |
573 | ||
574 | if (error & AR9170_RX_ERROR_FCS) { | |
575 | status.flag |= RX_FLAG_FAILED_FCS_CRC; | |
576 | error &= ~AR9170_RX_ERROR_FCS; | |
577 | } | |
578 | ||
579 | decrypt = ar9170_get_decrypt_type(tail); | |
580 | if (!(decrypt & AR9170_RX_ENC_SOFTWARE) && | |
581 | decrypt != AR9170_ENC_ALG_NONE) | |
582 | status.flag |= RX_FLAG_DECRYPTED; | |
583 | ||
584 | /* ignore wrong RA errors */ | |
585 | error &= ~AR9170_RX_ERROR_WRONG_RA; | |
586 | ||
587 | if (error & AR9170_RX_ERROR_DECRYPT) { | |
588 | error &= ~AR9170_RX_ERROR_DECRYPT; | |
589 | ||
590 | /* | |
591 | * Rx decryption is done in place, | |
592 | * the original data is lost anyway. | |
593 | */ | |
594 | return ; | |
595 | } | |
596 | ||
597 | /* drop any other error frames */ | |
598 | if ((error) && (net_ratelimit())) { | |
599 | printk(KERN_DEBUG "%s: errors: %#x\n", | |
600 | wiphy_name(ar->hw->wiphy), error); | |
601 | return; | |
602 | } | |
603 | ||
604 | buf += sizeof(struct ar9170_rx_head); | |
605 | fc = *(__le16 *)buf; | |
606 | ||
607 | if (ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc)) | |
608 | reserved = 32 + 2; | |
609 | else | |
610 | reserved = 32; | |
611 | ||
612 | skb = dev_alloc_skb(mpdu_len + reserved); | |
613 | if (!skb) | |
614 | return; | |
615 | ||
616 | skb_reserve(skb, reserved); | |
617 | memcpy(skb_put(skb, mpdu_len), buf, mpdu_len); | |
618 | ieee80211_rx_irqsafe(ar->hw, skb, &status); | |
619 | } | |
620 | ||
e9348cdd CL |
621 | void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb) |
622 | { | |
623 | unsigned int i, tlen, resplen; | |
624 | u8 *tbuf, *respbuf; | |
625 | ||
626 | tbuf = skb->data; | |
627 | tlen = skb->len; | |
628 | ||
629 | while (tlen >= 4) { | |
630 | int clen = tbuf[1] << 8 | tbuf[0]; | |
631 | int wlen = (clen + 3) & ~3; | |
632 | ||
633 | /* | |
634 | * parse stream (if any) | |
635 | */ | |
636 | if (tbuf[2] != 0 || tbuf[3] != 0x4e) { | |
637 | printk(KERN_ERR "%s: missing tag!\n", | |
638 | wiphy_name(ar->hw->wiphy)); | |
639 | return ; | |
640 | } | |
641 | if (wlen > tlen - 4) { | |
642 | printk(KERN_ERR "%s: invalid RX (%d, %d, %d)\n", | |
643 | wiphy_name(ar->hw->wiphy), clen, wlen, tlen); | |
644 | print_hex_dump(KERN_DEBUG, "data: ", | |
645 | DUMP_PREFIX_OFFSET, | |
646 | 16, 1, tbuf, tlen, true); | |
647 | return ; | |
648 | } | |
649 | resplen = clen; | |
650 | respbuf = tbuf + 4; | |
651 | tbuf += wlen + 4; | |
652 | tlen -= wlen + 4; | |
653 | ||
654 | i = 0; | |
655 | ||
656 | /* weird thing, but this is the same in the original driver */ | |
657 | while (resplen > 2 && i < 12 && | |
658 | respbuf[0] == 0xff && respbuf[1] == 0xff) { | |
659 | i += 2; | |
660 | resplen -= 2; | |
661 | respbuf += 2; | |
662 | } | |
663 | ||
664 | if (resplen < 4) | |
665 | continue; | |
666 | ||
667 | /* found the 6 * 0xffff marker? */ | |
668 | if (i == 12) | |
669 | ar9170_handle_command_response(ar, respbuf, resplen); | |
670 | else | |
671 | ar9170_handle_mpdu(ar, respbuf, resplen); | |
672 | } | |
673 | ||
674 | if (tlen) | |
675 | printk(KERN_ERR "%s: buffer remains!\n", | |
676 | wiphy_name(ar->hw->wiphy)); | |
677 | } | |
e9348cdd CL |
678 | |
679 | #define AR9170_FILL_QUEUE(queue, ai_fs, cwmin, cwmax, _txop) \ | |
680 | do { \ | |
681 | queue.aifs = ai_fs; \ | |
682 | queue.cw_min = cwmin; \ | |
683 | queue.cw_max = cwmax; \ | |
684 | queue.txop = _txop; \ | |
685 | } while (0) | |
686 | ||
687 | static int ar9170_op_start(struct ieee80211_hw *hw) | |
688 | { | |
689 | struct ar9170 *ar = hw->priv; | |
690 | int err, i; | |
691 | ||
692 | mutex_lock(&ar->mutex); | |
693 | ||
694 | /* reinitialize queues statistics */ | |
695 | memset(&ar->tx_stats, 0, sizeof(ar->tx_stats)); | |
696 | for (i = 0; i < ARRAY_SIZE(ar->tx_stats); i++) | |
697 | ar->tx_stats[i].limit = 8; | |
698 | ||
699 | /* reset QoS defaults */ | |
700 | AR9170_FILL_QUEUE(ar->edcf[0], 3, 15, 1023, 0); /* BEST EFFORT*/ | |
701 | AR9170_FILL_QUEUE(ar->edcf[1], 7, 15, 1023, 0); /* BACKGROUND */ | |
702 | AR9170_FILL_QUEUE(ar->edcf[2], 2, 7, 15, 94); /* VIDEO */ | |
703 | AR9170_FILL_QUEUE(ar->edcf[3], 2, 3, 7, 47); /* VOICE */ | |
704 | AR9170_FILL_QUEUE(ar->edcf[4], 2, 3, 7, 0); /* SPECIAL */ | |
705 | ||
706 | err = ar->open(ar); | |
707 | if (err) | |
708 | goto out; | |
709 | ||
710 | err = ar9170_init_mac(ar); | |
711 | if (err) | |
712 | goto out; | |
713 | ||
714 | err = ar9170_set_qos(ar); | |
715 | if (err) | |
716 | goto out; | |
717 | ||
718 | err = ar9170_init_phy(ar, IEEE80211_BAND_2GHZ); | |
719 | if (err) | |
720 | goto out; | |
721 | ||
722 | err = ar9170_init_rf(ar); | |
723 | if (err) | |
724 | goto out; | |
725 | ||
726 | /* start DMA */ | |
727 | err = ar9170_write_reg(ar, 0x1c3d30, 0x100); | |
728 | if (err) | |
729 | goto out; | |
730 | ||
731 | ar->state = AR9170_STARTED; | |
732 | ||
733 | out: | |
734 | mutex_unlock(&ar->mutex); | |
735 | return err; | |
736 | } | |
737 | ||
738 | static void ar9170_op_stop(struct ieee80211_hw *hw) | |
739 | { | |
740 | struct ar9170 *ar = hw->priv; | |
741 | ||
742 | if (IS_STARTED(ar)) | |
743 | ar->state = AR9170_IDLE; | |
744 | ||
32c1628f | 745 | flush_workqueue(ar->hw->workqueue); |
e9348cdd | 746 | |
32c1628f | 747 | mutex_lock(&ar->mutex); |
e9348cdd CL |
748 | cancel_delayed_work_sync(&ar->tx_status_janitor); |
749 | cancel_work_sync(&ar->filter_config_work); | |
750 | cancel_work_sync(&ar->beacon_work); | |
751 | skb_queue_purge(&ar->global_tx_status_waste); | |
752 | skb_queue_purge(&ar->global_tx_status); | |
753 | ||
754 | if (IS_ACCEPTING_CMD(ar)) { | |
755 | ar9170_set_leds_state(ar, 0); | |
756 | ||
757 | /* stop DMA */ | |
758 | ar9170_write_reg(ar, 0x1c3d30, 0); | |
759 | ar->stop(ar); | |
760 | } | |
761 | ||
762 | mutex_unlock(&ar->mutex); | |
763 | } | |
764 | ||
765 | int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
766 | { | |
767 | struct ar9170 *ar = hw->priv; | |
768 | struct ieee80211_hdr *hdr; | |
769 | struct ar9170_tx_control *txc; | |
770 | struct ieee80211_tx_info *info; | |
771 | struct ieee80211_rate *rate = NULL; | |
772 | struct ieee80211_tx_rate *txrate; | |
773 | unsigned int queue = skb_get_queue_mapping(skb); | |
774 | unsigned long flags = 0; | |
775 | struct ar9170_sta_info *sta_info = NULL; | |
776 | u32 power, chains; | |
777 | u16 keytype = 0; | |
778 | u16 len, icv = 0; | |
779 | int err; | |
780 | bool tx_status; | |
781 | ||
782 | if (unlikely(!IS_STARTED(ar))) | |
783 | goto err_free; | |
784 | ||
785 | hdr = (void *)skb->data; | |
786 | info = IEEE80211_SKB_CB(skb); | |
787 | len = skb->len; | |
788 | ||
789 | spin_lock_irqsave(&ar->tx_stats_lock, flags); | |
790 | if (ar->tx_stats[queue].limit < ar->tx_stats[queue].len) { | |
791 | spin_unlock_irqrestore(&ar->tx_stats_lock, flags); | |
792 | return NETDEV_TX_OK; | |
793 | } | |
794 | ||
795 | ar->tx_stats[queue].len++; | |
796 | ar->tx_stats[queue].count++; | |
797 | if (ar->tx_stats[queue].limit == ar->tx_stats[queue].len) | |
798 | ieee80211_stop_queue(hw, queue); | |
799 | ||
800 | spin_unlock_irqrestore(&ar->tx_stats_lock, flags); | |
801 | ||
802 | txc = (void *)skb_push(skb, sizeof(*txc)); | |
803 | ||
804 | tx_status = (((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) != 0) || | |
805 | ((info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) != 0)); | |
806 | ||
807 | if (info->control.hw_key) { | |
808 | icv = info->control.hw_key->icv_len; | |
809 | ||
810 | switch (info->control.hw_key->alg) { | |
811 | case ALG_WEP: | |
812 | keytype = AR9170_TX_MAC_ENCR_RC4; | |
813 | break; | |
814 | case ALG_TKIP: | |
815 | keytype = AR9170_TX_MAC_ENCR_RC4; | |
816 | break; | |
817 | case ALG_CCMP: | |
818 | keytype = AR9170_TX_MAC_ENCR_AES; | |
819 | break; | |
820 | default: | |
821 | WARN_ON(1); | |
822 | goto err_dequeue; | |
823 | } | |
824 | } | |
825 | ||
826 | /* Length */ | |
827 | txc->length = cpu_to_le16(len + icv + 4); | |
828 | ||
829 | txc->mac_control = cpu_to_le16(AR9170_TX_MAC_HW_DURATION | | |
830 | AR9170_TX_MAC_BACKOFF); | |
831 | txc->mac_control |= cpu_to_le16(ar9170_qos_hwmap[queue] << | |
832 | AR9170_TX_MAC_QOS_SHIFT); | |
833 | txc->mac_control |= cpu_to_le16(keytype); | |
834 | txc->phy_control = cpu_to_le32(0); | |
835 | ||
836 | if (info->flags & IEEE80211_TX_CTL_NO_ACK) | |
837 | txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_NO_ACK); | |
838 | ||
839 | if (info->flags & IEEE80211_TX_CTL_AMPDU) | |
840 | txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_AGGR); | |
841 | ||
842 | txrate = &info->control.rates[0]; | |
843 | ||
844 | if (txrate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT) | |
845 | txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_CTS); | |
846 | else if (txrate->flags & IEEE80211_TX_RC_USE_RTS_CTS) | |
847 | txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_RTS); | |
848 | ||
849 | if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD) | |
850 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_GREENFIELD); | |
851 | ||
852 | if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) | |
853 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_PREAMBLE); | |
854 | ||
855 | if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) | |
856 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ); | |
857 | /* this works because 40 MHz is 2 and dup is 3 */ | |
858 | if (txrate->flags & IEEE80211_TX_RC_DUP_DATA) | |
859 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ_DUP); | |
860 | ||
861 | if (txrate->flags & IEEE80211_TX_RC_SHORT_GI) | |
862 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_GI); | |
863 | ||
864 | if (txrate->flags & IEEE80211_TX_RC_MCS) { | |
865 | u32 r = txrate->idx; | |
866 | u8 *txpower; | |
867 | ||
868 | r <<= AR9170_TX_PHY_MCS_SHIFT; | |
869 | if (WARN_ON(r & ~AR9170_TX_PHY_MCS_MASK)) | |
870 | goto err_dequeue; | |
871 | txc->phy_control |= cpu_to_le32(r & AR9170_TX_PHY_MCS_MASK); | |
872 | txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_MOD_HT); | |
873 | ||
874 | if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) { | |
875 | if (info->band == IEEE80211_BAND_5GHZ) | |
876 | txpower = ar->power_5G_ht40; | |
877 | else | |
878 | txpower = ar->power_2G_ht40; | |
879 | } else { | |
880 | if (info->band == IEEE80211_BAND_5GHZ) | |
881 | txpower = ar->power_5G_ht20; | |
882 | else | |
883 | txpower = ar->power_2G_ht20; | |
884 | } | |
885 | ||
886 | power = txpower[(txrate->idx) & 7]; | |
887 | } else { | |
888 | u8 *txpower; | |
889 | u32 mod; | |
890 | u32 phyrate; | |
891 | u8 idx = txrate->idx; | |
892 | ||
893 | if (info->band != IEEE80211_BAND_2GHZ) { | |
894 | idx += 4; | |
895 | txpower = ar->power_5G_leg; | |
896 | mod = AR9170_TX_PHY_MOD_OFDM; | |
897 | } else { | |
898 | if (idx < 4) { | |
899 | txpower = ar->power_2G_cck; | |
900 | mod = AR9170_TX_PHY_MOD_CCK; | |
901 | } else { | |
902 | mod = AR9170_TX_PHY_MOD_OFDM; | |
903 | txpower = ar->power_2G_ofdm; | |
904 | } | |
905 | } | |
906 | ||
907 | rate = &__ar9170_ratetable[idx]; | |
908 | ||
909 | phyrate = rate->hw_value & 0xF; | |
910 | power = txpower[(rate->hw_value & 0x30) >> 4]; | |
911 | phyrate <<= AR9170_TX_PHY_MCS_SHIFT; | |
912 | ||
913 | txc->phy_control |= cpu_to_le32(mod); | |
914 | txc->phy_control |= cpu_to_le32(phyrate); | |
915 | } | |
916 | ||
917 | power <<= AR9170_TX_PHY_TX_PWR_SHIFT; | |
918 | power &= AR9170_TX_PHY_TX_PWR_MASK; | |
919 | txc->phy_control |= cpu_to_le32(power); | |
920 | ||
921 | /* set TX chains */ | |
922 | if (ar->eeprom.tx_mask == 1) { | |
923 | chains = AR9170_TX_PHY_TXCHAIN_1; | |
924 | } else { | |
925 | chains = AR9170_TX_PHY_TXCHAIN_2; | |
926 | ||
927 | /* >= 36M legacy OFDM - use only one chain */ | |
928 | if (rate && rate->bitrate >= 360) | |
929 | chains = AR9170_TX_PHY_TXCHAIN_1; | |
930 | } | |
931 | txc->phy_control |= cpu_to_le32(chains << AR9170_TX_PHY_TXCHAIN_SHIFT); | |
932 | ||
933 | if (tx_status) { | |
934 | txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_RATE_PROBE); | |
935 | /* | |
936 | * WARNING: | |
937 | * Putting the QoS queue bits into an unexplored territory is | |
938 | * certainly not elegant. | |
939 | * | |
940 | * In my defense: This idea provides a reasonable way to | |
941 | * smuggle valuable information to the tx_status callback. | |
942 | * Also, the idea behind this bit-abuse came straight from | |
943 | * the original driver code. | |
944 | */ | |
945 | ||
946 | txc->phy_control |= | |
947 | cpu_to_le32(queue << AR9170_TX_PHY_QOS_SHIFT); | |
948 | ||
949 | if (info->control.sta) { | |
950 | sta_info = (void *) info->control.sta->drv_priv; | |
4a48e2a4 | 951 | skb_queue_tail(&sta_info->tx_status[queue], skb); |
e9348cdd CL |
952 | } else { |
953 | skb_queue_tail(&ar->global_tx_status, skb); | |
954 | ||
955 | queue_delayed_work(ar->hw->workqueue, | |
956 | &ar->tx_status_janitor, | |
957 | msecs_to_jiffies(100)); | |
958 | } | |
959 | } | |
960 | ||
961 | err = ar->tx(ar, skb, tx_status, 0); | |
962 | if (unlikely(tx_status && err)) { | |
963 | if (info->control.sta) | |
4a48e2a4 | 964 | skb_unlink(skb, &sta_info->tx_status[queue]); |
e9348cdd CL |
965 | else |
966 | skb_unlink(skb, &ar->global_tx_status); | |
967 | } | |
968 | ||
969 | return NETDEV_TX_OK; | |
970 | ||
971 | err_dequeue: | |
972 | spin_lock_irqsave(&ar->tx_stats_lock, flags); | |
973 | ar->tx_stats[queue].len--; | |
974 | ar->tx_stats[queue].count--; | |
975 | spin_unlock_irqrestore(&ar->tx_stats_lock, flags); | |
976 | ||
977 | err_free: | |
978 | dev_kfree_skb(skb); | |
979 | return NETDEV_TX_OK; | |
980 | } | |
981 | ||
982 | static int ar9170_op_add_interface(struct ieee80211_hw *hw, | |
983 | struct ieee80211_if_init_conf *conf) | |
984 | { | |
985 | struct ar9170 *ar = hw->priv; | |
986 | int err = 0; | |
987 | ||
988 | mutex_lock(&ar->mutex); | |
989 | ||
990 | if (ar->vif) { | |
991 | err = -EBUSY; | |
992 | goto unlock; | |
993 | } | |
994 | ||
995 | ar->vif = conf->vif; | |
996 | memcpy(ar->mac_addr, conf->mac_addr, ETH_ALEN); | |
997 | ||
998 | if (modparam_nohwcrypt || (ar->vif->type != NL80211_IFTYPE_STATION)) { | |
999 | ar->rx_software_decryption = true; | |
1000 | ar->disable_offload = true; | |
1001 | } | |
1002 | ||
1003 | ar->cur_filter = 0; | |
1004 | ar->want_filter = AR9170_MAC_REG_FTF_DEFAULTS; | |
1005 | err = ar9170_update_frame_filter(ar); | |
1006 | if (err) | |
1007 | goto unlock; | |
1008 | ||
1009 | err = ar9170_set_operating_mode(ar); | |
1010 | ||
1011 | unlock: | |
1012 | mutex_unlock(&ar->mutex); | |
1013 | return err; | |
1014 | } | |
1015 | ||
1016 | static void ar9170_op_remove_interface(struct ieee80211_hw *hw, | |
1017 | struct ieee80211_if_init_conf *conf) | |
1018 | { | |
1019 | struct ar9170 *ar = hw->priv; | |
1020 | ||
1021 | mutex_lock(&ar->mutex); | |
1022 | ar->vif = NULL; | |
1023 | ar->want_filter = 0; | |
1024 | ar9170_update_frame_filter(ar); | |
1025 | ar9170_set_beacon_timers(ar); | |
1026 | dev_kfree_skb(ar->beacon); | |
1027 | ar->beacon = NULL; | |
1028 | ar->sniffer_enabled = false; | |
1029 | ar->rx_software_decryption = false; | |
1030 | ar9170_set_operating_mode(ar); | |
1031 | mutex_unlock(&ar->mutex); | |
1032 | } | |
1033 | ||
1034 | static int ar9170_op_config(struct ieee80211_hw *hw, u32 changed) | |
1035 | { | |
1036 | struct ar9170 *ar = hw->priv; | |
1037 | int err = 0; | |
1038 | ||
1039 | mutex_lock(&ar->mutex); | |
1040 | ||
1041 | if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) { | |
1042 | /* TODO */ | |
1043 | err = 0; | |
1044 | } | |
1045 | ||
1046 | if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) { | |
1047 | /* TODO */ | |
1048 | err = 0; | |
1049 | } | |
1050 | ||
1051 | if (changed & IEEE80211_CONF_CHANGE_PS) { | |
1052 | /* TODO */ | |
1053 | err = 0; | |
1054 | } | |
1055 | ||
1056 | if (changed & IEEE80211_CONF_CHANGE_POWER) { | |
1057 | /* TODO */ | |
1058 | err = 0; | |
1059 | } | |
1060 | ||
1061 | if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) { | |
1062 | /* | |
1063 | * is it long_frame_max_tx_count or short_frame_max_tx_count? | |
1064 | */ | |
1065 | ||
1066 | err = ar9170_set_hwretry_limit(ar, | |
1067 | ar->hw->conf.long_frame_max_tx_count); | |
1068 | if (err) | |
1069 | goto out; | |
1070 | } | |
1071 | ||
1072 | if (changed & IEEE80211_CONF_CHANGE_BEACON_INTERVAL) { | |
1073 | err = ar9170_set_beacon_timers(ar); | |
1074 | if (err) | |
1075 | goto out; | |
1076 | } | |
1077 | ||
1078 | if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { | |
1079 | err = ar9170_set_channel(ar, hw->conf.channel, | |
1080 | AR9170_RFI_NONE, AR9170_BW_20); | |
1081 | if (err) | |
1082 | goto out; | |
1083 | /* adjust slot time for 5 GHz */ | |
1084 | if (hw->conf.channel->band == IEEE80211_BAND_5GHZ) | |
1085 | err = ar9170_write_reg(ar, AR9170_MAC_REG_SLOT_TIME, | |
1086 | 9 << 10); | |
1087 | } | |
1088 | ||
1089 | out: | |
1090 | mutex_unlock(&ar->mutex); | |
1091 | return err; | |
1092 | } | |
1093 | ||
1094 | static int ar9170_op_config_interface(struct ieee80211_hw *hw, | |
1095 | struct ieee80211_vif *vif, | |
1096 | struct ieee80211_if_conf *conf) | |
1097 | { | |
1098 | struct ar9170 *ar = hw->priv; | |
1099 | int err = 0; | |
1100 | ||
1101 | mutex_lock(&ar->mutex); | |
1102 | ||
1103 | if (conf->changed & IEEE80211_IFCC_BSSID) { | |
1104 | memcpy(ar->bssid, conf->bssid, ETH_ALEN); | |
1105 | err = ar9170_set_operating_mode(ar); | |
1106 | } | |
1107 | ||
1108 | if (conf->changed & IEEE80211_IFCC_BEACON) { | |
1109 | err = ar9170_update_beacon(ar); | |
1110 | ||
1111 | if (err) | |
1112 | goto out; | |
1113 | err = ar9170_set_beacon_timers(ar); | |
1114 | } | |
1115 | ||
1116 | out: | |
1117 | mutex_unlock(&ar->mutex); | |
1118 | return err; | |
1119 | } | |
1120 | ||
1121 | static void ar9170_set_filters(struct work_struct *work) | |
1122 | { | |
1123 | struct ar9170 *ar = container_of(work, struct ar9170, | |
1124 | filter_config_work); | |
1125 | int err; | |
1126 | ||
e9348cdd | 1127 | if (unlikely(!IS_STARTED(ar))) |
32c1628f | 1128 | return ; |
e9348cdd | 1129 | |
32c1628f | 1130 | mutex_lock(&ar->mutex); |
e9348cdd CL |
1131 | if (ar->filter_changed & AR9170_FILTER_CHANGED_PROMISC) { |
1132 | err = ar9170_set_operating_mode(ar); | |
1133 | if (err) | |
1134 | goto unlock; | |
1135 | } | |
1136 | ||
1137 | if (ar->filter_changed & AR9170_FILTER_CHANGED_MULTICAST) { | |
1138 | err = ar9170_update_multicast(ar); | |
1139 | if (err) | |
1140 | goto unlock; | |
1141 | } | |
1142 | ||
1143 | if (ar->filter_changed & AR9170_FILTER_CHANGED_FRAMEFILTER) | |
1144 | err = ar9170_update_frame_filter(ar); | |
1145 | ||
1146 | unlock: | |
1147 | mutex_unlock(&ar->mutex); | |
1148 | } | |
1149 | ||
1150 | static void ar9170_op_configure_filter(struct ieee80211_hw *hw, | |
1151 | unsigned int changed_flags, | |
1152 | unsigned int *new_flags, | |
1153 | int mc_count, struct dev_mc_list *mclist) | |
1154 | { | |
1155 | struct ar9170 *ar = hw->priv; | |
1156 | ||
1157 | /* mask supported flags */ | |
1158 | *new_flags &= FIF_ALLMULTI | FIF_CONTROL | FIF_BCN_PRBRESP_PROMISC | | |
1159 | FIF_PROMISC_IN_BSS; | |
1160 | ||
1161 | /* | |
1162 | * We can support more by setting the sniffer bit and | |
1163 | * then checking the error flags, later. | |
1164 | */ | |
1165 | ||
1166 | if (changed_flags & FIF_ALLMULTI) { | |
1167 | if (*new_flags & FIF_ALLMULTI) { | |
1168 | ar->want_mc_hash = ~0ULL; | |
1169 | } else { | |
1170 | u64 mchash; | |
1171 | int i; | |
1172 | ||
1173 | /* always get broadcast frames */ | |
1174 | mchash = 1ULL << (0xff>>2); | |
1175 | ||
1176 | for (i = 0; i < mc_count; i++) { | |
1177 | if (WARN_ON(!mclist)) | |
1178 | break; | |
1179 | mchash |= 1ULL << (mclist->dmi_addr[5] >> 2); | |
1180 | mclist = mclist->next; | |
1181 | } | |
1182 | ar->want_mc_hash = mchash; | |
1183 | } | |
1184 | ar->filter_changed |= AR9170_FILTER_CHANGED_MULTICAST; | |
1185 | } | |
1186 | ||
1187 | if (changed_flags & FIF_CONTROL) { | |
1188 | u32 filter = AR9170_MAC_REG_FTF_PSPOLL | | |
1189 | AR9170_MAC_REG_FTF_RTS | | |
1190 | AR9170_MAC_REG_FTF_CTS | | |
1191 | AR9170_MAC_REG_FTF_ACK | | |
1192 | AR9170_MAC_REG_FTF_CFE | | |
1193 | AR9170_MAC_REG_FTF_CFE_ACK; | |
1194 | ||
1195 | if (*new_flags & FIF_CONTROL) | |
1196 | ar->want_filter = ar->cur_filter | filter; | |
1197 | else | |
1198 | ar->want_filter = ar->cur_filter & ~filter; | |
1199 | ||
1200 | ar->filter_changed |= AR9170_FILTER_CHANGED_FRAMEFILTER; | |
1201 | } | |
1202 | ||
1203 | if (changed_flags & FIF_PROMISC_IN_BSS) { | |
1204 | ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0; | |
1205 | ar->filter_changed |= AR9170_FILTER_CHANGED_PROMISC; | |
1206 | } | |
1207 | ||
1208 | if (likely(IS_STARTED(ar))) | |
1209 | queue_work(ar->hw->workqueue, &ar->filter_config_work); | |
1210 | } | |
1211 | ||
1212 | static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw, | |
1213 | struct ieee80211_vif *vif, | |
1214 | struct ieee80211_bss_conf *bss_conf, | |
1215 | u32 changed) | |
1216 | { | |
1217 | struct ar9170 *ar = hw->priv; | |
1218 | int err = 0; | |
1219 | ||
1220 | mutex_lock(&ar->mutex); | |
1221 | ||
1222 | ar9170_regwrite_begin(ar); | |
1223 | ||
1224 | if (changed & BSS_CHANGED_ASSOC) { | |
1225 | ar->state = bss_conf->assoc ? AR9170_ASSOCIATED : ar->state; | |
1226 | ||
1227 | #ifndef CONFIG_AR9170_LEDS | |
1228 | /* enable assoc LED. */ | |
1229 | err = ar9170_set_leds_state(ar, bss_conf->assoc ? 2 : 0); | |
1230 | #endif /* CONFIG_AR9170_LEDS */ | |
1231 | } | |
1232 | ||
1233 | if (changed & BSS_CHANGED_HT) { | |
1234 | /* TODO */ | |
1235 | err = 0; | |
1236 | } | |
1237 | ||
1238 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
1239 | u32 slottime = 20; | |
1240 | ||
1241 | if (bss_conf->use_short_slot) | |
1242 | slottime = 9; | |
1243 | ||
1244 | ar9170_regwrite(AR9170_MAC_REG_SLOT_TIME, slottime << 10); | |
1245 | } | |
1246 | ||
1247 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
1248 | u32 cck, ofdm; | |
1249 | ||
1250 | if (hw->conf.channel->band == IEEE80211_BAND_5GHZ) { | |
1251 | ofdm = bss_conf->basic_rates; | |
1252 | cck = 0; | |
1253 | } else { | |
1254 | /* four cck rates */ | |
1255 | cck = bss_conf->basic_rates & 0xf; | |
1256 | ofdm = bss_conf->basic_rates >> 4; | |
1257 | } | |
1258 | ar9170_regwrite(AR9170_MAC_REG_BASIC_RATE, | |
1259 | ofdm << 8 | cck); | |
1260 | } | |
1261 | ||
1262 | ar9170_regwrite_finish(); | |
1263 | err = ar9170_regwrite_result(); | |
1264 | mutex_unlock(&ar->mutex); | |
1265 | } | |
1266 | ||
1267 | static u64 ar9170_op_get_tsf(struct ieee80211_hw *hw) | |
1268 | { | |
1269 | struct ar9170 *ar = hw->priv; | |
1270 | int err; | |
1271 | u32 tsf_low; | |
1272 | u32 tsf_high; | |
1273 | u64 tsf; | |
1274 | ||
1275 | mutex_lock(&ar->mutex); | |
1276 | err = ar9170_read_reg(ar, AR9170_MAC_REG_TSF_L, &tsf_low); | |
1277 | if (!err) | |
1278 | err = ar9170_read_reg(ar, AR9170_MAC_REG_TSF_H, &tsf_high); | |
1279 | mutex_unlock(&ar->mutex); | |
1280 | ||
1281 | if (WARN_ON(err)) | |
1282 | return 0; | |
1283 | ||
1284 | tsf = tsf_high; | |
1285 | tsf = (tsf << 32) | tsf_low; | |
1286 | return tsf; | |
1287 | } | |
1288 | ||
1289 | static int ar9170_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
1290 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, | |
1291 | struct ieee80211_key_conf *key) | |
1292 | { | |
1293 | struct ar9170 *ar = hw->priv; | |
1294 | int err = 0, i; | |
1295 | u8 ktype; | |
1296 | ||
1297 | if ((!ar->vif) || (ar->disable_offload)) | |
1298 | return -EOPNOTSUPP; | |
1299 | ||
1300 | switch (key->alg) { | |
1301 | case ALG_WEP: | |
1302 | if (key->keylen == LEN_WEP40) | |
1303 | ktype = AR9170_ENC_ALG_WEP64; | |
1304 | else | |
1305 | ktype = AR9170_ENC_ALG_WEP128; | |
1306 | break; | |
1307 | case ALG_TKIP: | |
1308 | ktype = AR9170_ENC_ALG_TKIP; | |
1309 | break; | |
1310 | case ALG_CCMP: | |
1311 | ktype = AR9170_ENC_ALG_AESCCMP; | |
1312 | break; | |
1313 | default: | |
1314 | return -EOPNOTSUPP; | |
1315 | } | |
1316 | ||
1317 | mutex_lock(&ar->mutex); | |
1318 | if (cmd == SET_KEY) { | |
1319 | if (unlikely(!IS_STARTED(ar))) { | |
1320 | err = -EOPNOTSUPP; | |
1321 | goto out; | |
1322 | } | |
1323 | ||
1324 | /* group keys need all-zeroes address */ | |
1325 | if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1326 | sta = NULL; | |
1327 | ||
1328 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
1329 | for (i = 0; i < 64; i++) | |
1330 | if (!(ar->usedkeys & BIT(i))) | |
1331 | break; | |
1332 | if (i == 64) { | |
1333 | ar->rx_software_decryption = true; | |
1334 | ar9170_set_operating_mode(ar); | |
1335 | err = -ENOSPC; | |
1336 | goto out; | |
1337 | } | |
1338 | } else { | |
1339 | i = 64 + key->keyidx; | |
1340 | } | |
1341 | ||
1342 | key->hw_key_idx = i; | |
1343 | ||
1344 | err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL, ktype, 0, | |
1345 | key->key, min_t(u8, 16, key->keylen)); | |
1346 | if (err) | |
1347 | goto out; | |
1348 | ||
1349 | if (key->alg == ALG_TKIP) { | |
1350 | err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL, | |
1351 | ktype, 1, key->key + 16, 16); | |
1352 | if (err) | |
1353 | goto out; | |
1354 | ||
1355 | /* | |
1356 | * hardware is not capable generating the MMIC | |
1357 | * for fragmented frames! | |
1358 | */ | |
1359 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
1360 | } | |
1361 | ||
1362 | if (i < 64) | |
1363 | ar->usedkeys |= BIT(i); | |
1364 | ||
1365 | key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
1366 | } else { | |
1367 | if (unlikely(!IS_STARTED(ar))) { | |
1368 | /* The device is gone... together with the key ;-) */ | |
1369 | err = 0; | |
1370 | goto out; | |
1371 | } | |
1372 | ||
1373 | err = ar9170_disable_key(ar, key->hw_key_idx); | |
1374 | if (err) | |
1375 | goto out; | |
1376 | ||
1377 | if (key->hw_key_idx < 64) { | |
1378 | ar->usedkeys &= ~BIT(key->hw_key_idx); | |
1379 | } else { | |
1380 | err = ar9170_upload_key(ar, key->hw_key_idx, NULL, | |
1381 | AR9170_ENC_ALG_NONE, 0, | |
1382 | NULL, 0); | |
1383 | if (err) | |
1384 | goto out; | |
1385 | ||
1386 | if (key->alg == ALG_TKIP) { | |
1387 | err = ar9170_upload_key(ar, key->hw_key_idx, | |
1388 | NULL, | |
1389 | AR9170_ENC_ALG_NONE, 1, | |
1390 | NULL, 0); | |
1391 | if (err) | |
1392 | goto out; | |
1393 | } | |
1394 | ||
1395 | } | |
1396 | } | |
1397 | ||
1398 | ar9170_regwrite_begin(ar); | |
1399 | ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_L, ar->usedkeys); | |
1400 | ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_H, ar->usedkeys >> 32); | |
1401 | ar9170_regwrite_finish(); | |
1402 | err = ar9170_regwrite_result(); | |
1403 | ||
1404 | out: | |
1405 | mutex_unlock(&ar->mutex); | |
1406 | ||
1407 | return err; | |
1408 | } | |
1409 | ||
1410 | static void ar9170_sta_notify(struct ieee80211_hw *hw, | |
1411 | struct ieee80211_vif *vif, | |
1412 | enum sta_notify_cmd cmd, | |
1413 | struct ieee80211_sta *sta) | |
1414 | { | |
1415 | struct ar9170 *ar = hw->priv; | |
1416 | struct ar9170_sta_info *info = (void *) sta->drv_priv; | |
1417 | struct sk_buff *skb; | |
4a48e2a4 | 1418 | unsigned int i; |
e9348cdd CL |
1419 | |
1420 | switch (cmd) { | |
1421 | case STA_NOTIFY_ADD: | |
4a48e2a4 CL |
1422 | for (i = 0; i < ar->hw->queues; i++) |
1423 | skb_queue_head_init(&info->tx_status[i]); | |
e9348cdd CL |
1424 | break; |
1425 | ||
1426 | case STA_NOTIFY_REMOVE: | |
1427 | ||
1428 | /* | |
1429 | * transfer all outstanding frames that need a tx_status | |
4a48e2a4 | 1430 | * reports to the global tx_status queue |
e9348cdd CL |
1431 | */ |
1432 | ||
4a48e2a4 CL |
1433 | for (i = 0; i < ar->hw->queues; i++) { |
1434 | while ((skb = skb_dequeue(&info->tx_status[i]))) { | |
e9348cdd | 1435 | #ifdef AR9170_QUEUE_DEBUG |
4a48e2a4 CL |
1436 | printk(KERN_DEBUG "%s: queueing frame in " |
1437 | "global tx_status queue =>\n", | |
1438 | wiphy_name(ar->hw->wiphy)); | |
e9348cdd | 1439 | |
4a48e2a4 | 1440 | ar9170_print_txheader(ar, skb); |
e9348cdd | 1441 | #endif /* AR9170_QUEUE_DEBUG */ |
4a48e2a4 CL |
1442 | skb_queue_tail(&ar->global_tx_status, skb); |
1443 | } | |
e9348cdd | 1444 | } |
4a48e2a4 CL |
1445 | queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor, |
1446 | msecs_to_jiffies(100)); | |
e9348cdd CL |
1447 | break; |
1448 | ||
1449 | default: | |
1450 | break; | |
1451 | } | |
1452 | } | |
1453 | ||
1454 | static int ar9170_get_stats(struct ieee80211_hw *hw, | |
1455 | struct ieee80211_low_level_stats *stats) | |
1456 | { | |
1457 | struct ar9170 *ar = hw->priv; | |
1458 | u32 val; | |
1459 | int err; | |
1460 | ||
1461 | mutex_lock(&ar->mutex); | |
1462 | err = ar9170_read_reg(ar, AR9170_MAC_REG_TX_RETRY, &val); | |
1463 | ar->stats.dot11ACKFailureCount += val; | |
1464 | ||
1465 | memcpy(stats, &ar->stats, sizeof(*stats)); | |
1466 | mutex_unlock(&ar->mutex); | |
1467 | ||
1468 | return 0; | |
1469 | } | |
1470 | ||
1471 | static int ar9170_get_tx_stats(struct ieee80211_hw *hw, | |
1472 | struct ieee80211_tx_queue_stats *tx_stats) | |
1473 | { | |
1474 | struct ar9170 *ar = hw->priv; | |
1475 | ||
1476 | spin_lock_bh(&ar->tx_stats_lock); | |
1477 | memcpy(tx_stats, ar->tx_stats, sizeof(tx_stats[0]) * hw->queues); | |
1478 | spin_unlock_bh(&ar->tx_stats_lock); | |
1479 | ||
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | static int ar9170_conf_tx(struct ieee80211_hw *hw, u16 queue, | |
1484 | const struct ieee80211_tx_queue_params *param) | |
1485 | { | |
1486 | struct ar9170 *ar = hw->priv; | |
1487 | int ret; | |
1488 | ||
1489 | mutex_lock(&ar->mutex); | |
4a48e2a4 | 1490 | if ((param) && !(queue > ar->hw->queues)) { |
e9348cdd CL |
1491 | memcpy(&ar->edcf[ar9170_qos_hwmap[queue]], |
1492 | param, sizeof(*param)); | |
1493 | ||
1494 | ret = ar9170_set_qos(ar); | |
1495 | } else | |
1496 | ret = -EINVAL; | |
1497 | ||
1498 | mutex_unlock(&ar->mutex); | |
1499 | return ret; | |
1500 | } | |
1501 | ||
1502 | static const struct ieee80211_ops ar9170_ops = { | |
1503 | .start = ar9170_op_start, | |
1504 | .stop = ar9170_op_stop, | |
1505 | .tx = ar9170_op_tx, | |
1506 | .add_interface = ar9170_op_add_interface, | |
1507 | .remove_interface = ar9170_op_remove_interface, | |
1508 | .config = ar9170_op_config, | |
1509 | .config_interface = ar9170_op_config_interface, | |
1510 | .configure_filter = ar9170_op_configure_filter, | |
1511 | .conf_tx = ar9170_conf_tx, | |
1512 | .bss_info_changed = ar9170_op_bss_info_changed, | |
1513 | .get_tsf = ar9170_op_get_tsf, | |
1514 | .set_key = ar9170_set_key, | |
1515 | .sta_notify = ar9170_sta_notify, | |
1516 | .get_stats = ar9170_get_stats, | |
1517 | .get_tx_stats = ar9170_get_tx_stats, | |
1518 | }; | |
1519 | ||
1520 | void *ar9170_alloc(size_t priv_size) | |
1521 | { | |
1522 | struct ieee80211_hw *hw; | |
1523 | struct ar9170 *ar; | |
1524 | int i; | |
1525 | ||
1526 | hw = ieee80211_alloc_hw(priv_size, &ar9170_ops); | |
1527 | if (!hw) | |
1528 | return ERR_PTR(-ENOMEM); | |
1529 | ||
1530 | ar = hw->priv; | |
1531 | ar->hw = hw; | |
1532 | ||
1533 | mutex_init(&ar->mutex); | |
1534 | spin_lock_init(&ar->cmdlock); | |
1535 | spin_lock_init(&ar->tx_stats_lock); | |
1536 | skb_queue_head_init(&ar->global_tx_status); | |
1537 | skb_queue_head_init(&ar->global_tx_status_waste); | |
1538 | INIT_WORK(&ar->filter_config_work, ar9170_set_filters); | |
1539 | INIT_WORK(&ar->beacon_work, ar9170_new_beacon); | |
1540 | INIT_DELAYED_WORK(&ar->tx_status_janitor, ar9170_tx_status_janitor); | |
1541 | ||
1542 | /* all hw supports 2.4 GHz, so set channel to 1 by default */ | |
1543 | ar->channel = &ar9170_2ghz_chantable[0]; | |
1544 | ||
1545 | /* first part of wiphy init */ | |
1546 | ar->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | | |
1547 | BIT(NL80211_IFTYPE_WDS) | | |
1548 | BIT(NL80211_IFTYPE_ADHOC); | |
1549 | ar->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS | | |
1550 | IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING | | |
1551 | IEEE80211_HW_SIGNAL_DBM | | |
1552 | IEEE80211_HW_NOISE_DBM; | |
1553 | ||
4a48e2a4 | 1554 | ar->hw->queues = __AR9170_NUM_TXQ; |
e9348cdd CL |
1555 | ar->hw->extra_tx_headroom = 8; |
1556 | ar->hw->sta_data_size = sizeof(struct ar9170_sta_info); | |
1557 | ||
1558 | ar->hw->max_rates = 1; | |
1559 | ar->hw->max_rate_tries = 3; | |
1560 | ||
1561 | for (i = 0; i < ARRAY_SIZE(ar->noise); i++) | |
1562 | ar->noise[i] = -95; /* ATH_DEFAULT_NOISE_FLOOR */ | |
1563 | ||
1564 | return ar; | |
1565 | } | |
e9348cdd CL |
1566 | |
1567 | static int ar9170_read_eeprom(struct ar9170 *ar) | |
1568 | { | |
1569 | #define RW 8 /* number of words to read at once */ | |
1570 | #define RB (sizeof(u32) * RW) | |
1571 | DECLARE_MAC_BUF(mbuf); | |
1572 | u8 *eeprom = (void *)&ar->eeprom; | |
1573 | u8 *addr = ar->eeprom.mac_address; | |
1574 | __le32 offsets[RW]; | |
1575 | int i, j, err, bands = 0; | |
1576 | ||
1577 | BUILD_BUG_ON(sizeof(ar->eeprom) & 3); | |
1578 | ||
1579 | BUILD_BUG_ON(RB > AR9170_MAX_CMD_LEN - 4); | |
1580 | #ifndef __CHECKER__ | |
1581 | /* don't want to handle trailing remains */ | |
1582 | BUILD_BUG_ON(sizeof(ar->eeprom) % RB); | |
1583 | #endif | |
1584 | ||
1585 | for (i = 0; i < sizeof(ar->eeprom)/RB; i++) { | |
1586 | for (j = 0; j < RW; j++) | |
1587 | offsets[j] = cpu_to_le32(AR9170_EEPROM_START + | |
1588 | RB * i + 4 * j); | |
1589 | ||
1590 | err = ar->exec_cmd(ar, AR9170_CMD_RREG, | |
1591 | RB, (u8 *) &offsets, | |
1592 | RB, eeprom + RB * i); | |
1593 | if (err) | |
1594 | return err; | |
1595 | } | |
1596 | ||
1597 | #undef RW | |
1598 | #undef RB | |
1599 | ||
1600 | if (ar->eeprom.length == cpu_to_le16(0xFFFF)) | |
1601 | return -ENODATA; | |
1602 | ||
1603 | if (ar->eeprom.operating_flags & AR9170_OPFLAG_2GHZ) { | |
1604 | ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &ar9170_band_2GHz; | |
1605 | bands++; | |
1606 | } | |
1607 | if (ar->eeprom.operating_flags & AR9170_OPFLAG_5GHZ) { | |
1608 | ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &ar9170_band_5GHz; | |
1609 | bands++; | |
1610 | } | |
1611 | /* | |
1612 | * I measured this, a bandswitch takes roughly | |
1613 | * 135 ms and a frequency switch about 80. | |
1614 | * | |
1615 | * FIXME: measure these values again once EEPROM settings | |
1616 | * are used, that will influence them! | |
1617 | */ | |
1618 | if (bands == 2) | |
1619 | ar->hw->channel_change_time = 135 * 1000; | |
1620 | else | |
1621 | ar->hw->channel_change_time = 80 * 1000; | |
1622 | ||
1878f77e CL |
1623 | ar->regulatory.current_rd = le16_to_cpu(ar->eeprom.reg_domain[0]); |
1624 | ar->regulatory.current_rd_ext = le16_to_cpu(ar->eeprom.reg_domain[1]); | |
1625 | ||
e9348cdd CL |
1626 | /* second part of wiphy init */ |
1627 | SET_IEEE80211_PERM_ADDR(ar->hw, addr); | |
1628 | ||
1629 | return bands ? 0 : -EINVAL; | |
1630 | } | |
1631 | ||
1878f77e CL |
1632 | static int ar9170_reg_notifier(struct wiphy *wiphy, |
1633 | struct regulatory_request *request) | |
1634 | { | |
1635 | struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); | |
1636 | struct ar9170 *ar = hw->priv; | |
1637 | ||
1638 | return ath_reg_notifier_apply(wiphy, request, &ar->regulatory); | |
1639 | } | |
1640 | ||
e9348cdd CL |
1641 | int ar9170_register(struct ar9170 *ar, struct device *pdev) |
1642 | { | |
1643 | int err; | |
1644 | ||
1645 | /* try to read EEPROM, init MAC addr */ | |
1646 | err = ar9170_read_eeprom(ar); | |
1647 | if (err) | |
1648 | goto err_out; | |
1649 | ||
1878f77e CL |
1650 | err = ath_regd_init(&ar->regulatory, ar->hw->wiphy, |
1651 | ar9170_reg_notifier); | |
85efc86e LR |
1652 | if (err) |
1653 | goto err_out; | |
1878f77e | 1654 | |
e9348cdd CL |
1655 | err = ieee80211_register_hw(ar->hw); |
1656 | if (err) | |
1657 | goto err_out; | |
1658 | ||
1878f77e CL |
1659 | if (!ath_is_world_regd(&ar->regulatory)) |
1660 | regulatory_hint(ar->hw->wiphy, ar->regulatory.alpha2); | |
1661 | ||
e9348cdd CL |
1662 | err = ar9170_init_leds(ar); |
1663 | if (err) | |
1664 | goto err_unreg; | |
1665 | ||
1666 | #ifdef CONFIG_AR9170_LEDS | |
1667 | err = ar9170_register_leds(ar); | |
1668 | if (err) | |
1669 | goto err_unreg; | |
1670 | #endif /* CONFIG_AR9170_LEDS */ | |
1671 | ||
1672 | dev_info(pdev, "Atheros AR9170 is registered as '%s'\n", | |
1673 | wiphy_name(ar->hw->wiphy)); | |
1674 | ||
1675 | return err; | |
1676 | ||
1677 | err_unreg: | |
1678 | ieee80211_unregister_hw(ar->hw); | |
1679 | ||
1680 | err_out: | |
1681 | return err; | |
1682 | } | |
e9348cdd CL |
1683 | |
1684 | void ar9170_unregister(struct ar9170 *ar) | |
1685 | { | |
1686 | #ifdef CONFIG_AR9170_LEDS | |
1687 | ar9170_unregister_leds(ar); | |
1688 | #endif /* CONFIG_AR9170_LEDS */ | |
1689 | ||
1690 | ieee80211_unregister_hw(ar->hw); | |
1691 | mutex_destroy(&ar->mutex); | |
1692 | } |