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e04ed0a5 WYG |
1 | /****************************************************************************** |
2 | * | |
3 | * GPL LICENSE SUMMARY | |
4 | * | |
5 | * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of version 2 of the GNU General Public License as | |
9 | * published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
19 | * USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution | |
22 | * in the file called LICENSE.GPL. | |
23 | * | |
24 | * Contact Information: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
8d801080 | 29 | #include <linux/etherdevice.h> |
e04ed0a5 WYG |
30 | #include <linux/kernel.h> |
31 | #include <linux/module.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/sched.h> | |
34 | ||
35 | #include "iwl-dev.h" | |
36 | #include "iwl-core.h" | |
37 | #include "iwl-io.h" | |
38 | #include "iwl-helpers.h" | |
39 | #include "iwl-agn-hw.h" | |
40 | #include "iwl-agn.h" | |
1fa61b2e | 41 | #include "iwl-sta.h" |
e04ed0a5 | 42 | |
898dade1 | 43 | static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp) |
e04ed0a5 WYG |
44 | { |
45 | return le32_to_cpup((__le32 *)&tx_resp->status + | |
46 | tx_resp->frame_count) & MAX_SN; | |
47 | } | |
48 | ||
91835ba4 WYG |
49 | static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status) |
50 | { | |
51 | status &= TX_STATUS_MSK; | |
52 | ||
53 | switch (status) { | |
54 | case TX_STATUS_POSTPONE_DELAY: | |
55 | priv->_agn.reply_tx_stats.pp_delay++; | |
56 | break; | |
57 | case TX_STATUS_POSTPONE_FEW_BYTES: | |
58 | priv->_agn.reply_tx_stats.pp_few_bytes++; | |
59 | break; | |
60 | case TX_STATUS_POSTPONE_BT_PRIO: | |
61 | priv->_agn.reply_tx_stats.pp_bt_prio++; | |
62 | break; | |
63 | case TX_STATUS_POSTPONE_QUIET_PERIOD: | |
64 | priv->_agn.reply_tx_stats.pp_quiet_period++; | |
65 | break; | |
66 | case TX_STATUS_POSTPONE_CALC_TTAK: | |
67 | priv->_agn.reply_tx_stats.pp_calc_ttak++; | |
68 | break; | |
69 | case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: | |
70 | priv->_agn.reply_tx_stats.int_crossed_retry++; | |
71 | break; | |
72 | case TX_STATUS_FAIL_SHORT_LIMIT: | |
73 | priv->_agn.reply_tx_stats.short_limit++; | |
74 | break; | |
75 | case TX_STATUS_FAIL_LONG_LIMIT: | |
76 | priv->_agn.reply_tx_stats.long_limit++; | |
77 | break; | |
78 | case TX_STATUS_FAIL_FIFO_UNDERRUN: | |
79 | priv->_agn.reply_tx_stats.fifo_underrun++; | |
80 | break; | |
81 | case TX_STATUS_FAIL_DRAIN_FLOW: | |
82 | priv->_agn.reply_tx_stats.drain_flow++; | |
83 | break; | |
84 | case TX_STATUS_FAIL_RFKILL_FLUSH: | |
85 | priv->_agn.reply_tx_stats.rfkill_flush++; | |
86 | break; | |
87 | case TX_STATUS_FAIL_LIFE_EXPIRE: | |
88 | priv->_agn.reply_tx_stats.life_expire++; | |
89 | break; | |
90 | case TX_STATUS_FAIL_DEST_PS: | |
91 | priv->_agn.reply_tx_stats.dest_ps++; | |
92 | break; | |
93 | case TX_STATUS_FAIL_HOST_ABORTED: | |
94 | priv->_agn.reply_tx_stats.host_abort++; | |
95 | break; | |
96 | case TX_STATUS_FAIL_BT_RETRY: | |
97 | priv->_agn.reply_tx_stats.bt_retry++; | |
98 | break; | |
99 | case TX_STATUS_FAIL_STA_INVALID: | |
100 | priv->_agn.reply_tx_stats.sta_invalid++; | |
101 | break; | |
102 | case TX_STATUS_FAIL_FRAG_DROPPED: | |
103 | priv->_agn.reply_tx_stats.frag_drop++; | |
104 | break; | |
105 | case TX_STATUS_FAIL_TID_DISABLE: | |
106 | priv->_agn.reply_tx_stats.tid_disable++; | |
107 | break; | |
108 | case TX_STATUS_FAIL_FIFO_FLUSHED: | |
109 | priv->_agn.reply_tx_stats.fifo_flush++; | |
110 | break; | |
111 | case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL: | |
112 | priv->_agn.reply_tx_stats.insuff_cf_poll++; | |
113 | break; | |
1d270075 | 114 | case TX_STATUS_FAIL_PASSIVE_NO_RX: |
91835ba4 WYG |
115 | priv->_agn.reply_tx_stats.fail_hw_drop++; |
116 | break; | |
1d270075 | 117 | case TX_STATUS_FAIL_NO_BEACON_ON_RADAR: |
91835ba4 WYG |
118 | priv->_agn.reply_tx_stats.sta_color_mismatch++; |
119 | break; | |
120 | default: | |
121 | priv->_agn.reply_tx_stats.unknown++; | |
122 | break; | |
123 | } | |
124 | } | |
125 | ||
814665fe WYG |
126 | static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status) |
127 | { | |
128 | status &= AGG_TX_STATUS_MSK; | |
129 | ||
130 | switch (status) { | |
131 | case AGG_TX_STATE_UNDERRUN_MSK: | |
132 | priv->_agn.reply_agg_tx_stats.underrun++; | |
133 | break; | |
134 | case AGG_TX_STATE_BT_PRIO_MSK: | |
135 | priv->_agn.reply_agg_tx_stats.bt_prio++; | |
136 | break; | |
137 | case AGG_TX_STATE_FEW_BYTES_MSK: | |
138 | priv->_agn.reply_agg_tx_stats.few_bytes++; | |
139 | break; | |
140 | case AGG_TX_STATE_ABORT_MSK: | |
141 | priv->_agn.reply_agg_tx_stats.abort++; | |
142 | break; | |
143 | case AGG_TX_STATE_LAST_SENT_TTL_MSK: | |
144 | priv->_agn.reply_agg_tx_stats.last_sent_ttl++; | |
145 | break; | |
146 | case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK: | |
147 | priv->_agn.reply_agg_tx_stats.last_sent_try++; | |
148 | break; | |
149 | case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK: | |
150 | priv->_agn.reply_agg_tx_stats.last_sent_bt_kill++; | |
151 | break; | |
152 | case AGG_TX_STATE_SCD_QUERY_MSK: | |
153 | priv->_agn.reply_agg_tx_stats.scd_query++; | |
154 | break; | |
155 | case AGG_TX_STATE_TEST_BAD_CRC32_MSK: | |
156 | priv->_agn.reply_agg_tx_stats.bad_crc32++; | |
157 | break; | |
158 | case AGG_TX_STATE_RESPONSE_MSK: | |
159 | priv->_agn.reply_agg_tx_stats.response++; | |
160 | break; | |
161 | case AGG_TX_STATE_DUMP_TX_MSK: | |
162 | priv->_agn.reply_agg_tx_stats.dump_tx++; | |
163 | break; | |
164 | case AGG_TX_STATE_DELAY_TX_MSK: | |
165 | priv->_agn.reply_agg_tx_stats.delay_tx++; | |
166 | break; | |
167 | default: | |
168 | priv->_agn.reply_agg_tx_stats.unknown++; | |
169 | break; | |
170 | } | |
171 | } | |
172 | ||
743e015d WYG |
173 | static void iwlagn_set_tx_status(struct iwl_priv *priv, |
174 | struct ieee80211_tx_info *info, | |
898dade1 | 175 | struct iwlagn_tx_resp *tx_resp, |
743e015d WYG |
176 | int txq_id, bool is_agg) |
177 | { | |
178 | u16 status = le16_to_cpu(tx_resp->status.status); | |
179 | ||
180 | info->status.rates[0].count = tx_resp->failure_frame + 1; | |
181 | if (is_agg) | |
182 | info->flags &= ~IEEE80211_TX_CTL_AMPDU; | |
183 | info->flags |= iwl_tx_status_to_mac80211(status); | |
184 | iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags), | |
185 | info); | |
91835ba4 WYG |
186 | if (!iwl_is_tx_success(status)) |
187 | iwlagn_count_tx_err_status(priv, status); | |
743e015d WYG |
188 | |
189 | IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) rate_n_flags " | |
190 | "0x%x retries %d\n", | |
191 | txq_id, | |
192 | iwl_get_tx_fail_reason(status), status, | |
193 | le32_to_cpu(tx_resp->rate_n_flags), | |
194 | tx_resp->failure_frame); | |
195 | } | |
196 | ||
e1b3fa0c WYG |
197 | #ifdef CONFIG_IWLWIFI_DEBUG |
198 | #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x | |
199 | ||
200 | const char *iwl_get_agg_tx_fail_reason(u16 status) | |
201 | { | |
202 | status &= AGG_TX_STATUS_MSK; | |
203 | switch (status) { | |
204 | case AGG_TX_STATE_TRANSMITTED: | |
205 | return "SUCCESS"; | |
206 | AGG_TX_STATE_FAIL(UNDERRUN_MSK); | |
207 | AGG_TX_STATE_FAIL(BT_PRIO_MSK); | |
208 | AGG_TX_STATE_FAIL(FEW_BYTES_MSK); | |
209 | AGG_TX_STATE_FAIL(ABORT_MSK); | |
210 | AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK); | |
211 | AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK); | |
212 | AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK); | |
213 | AGG_TX_STATE_FAIL(SCD_QUERY_MSK); | |
214 | AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK); | |
215 | AGG_TX_STATE_FAIL(RESPONSE_MSK); | |
216 | AGG_TX_STATE_FAIL(DUMP_TX_MSK); | |
217 | AGG_TX_STATE_FAIL(DELAY_TX_MSK); | |
218 | } | |
219 | ||
220 | return "UNKNOWN"; | |
221 | } | |
222 | #endif /* CONFIG_IWLWIFI_DEBUG */ | |
223 | ||
e04ed0a5 WYG |
224 | static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv, |
225 | struct iwl_ht_agg *agg, | |
898dade1 | 226 | struct iwlagn_tx_resp *tx_resp, |
e04ed0a5 WYG |
227 | int txq_id, u16 start_idx) |
228 | { | |
229 | u16 status; | |
230 | struct agg_tx_status *frame_status = &tx_resp->status; | |
e04ed0a5 | 231 | struct ieee80211_hdr *hdr = NULL; |
e04ed0a5 WYG |
232 | int i, sh, idx; |
233 | u16 seq; | |
234 | ||
235 | if (agg->wait_for_ba) | |
236 | IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n"); | |
237 | ||
238 | agg->frame_count = tx_resp->frame_count; | |
239 | agg->start_idx = start_idx; | |
743e015d | 240 | agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags); |
e04ed0a5 WYG |
241 | agg->bitmap = 0; |
242 | ||
243 | /* # frames attempted by Tx command */ | |
244 | if (agg->frame_count == 1) { | |
245 | /* Only one frame was attempted; no block-ack will arrive */ | |
e04ed0a5 WYG |
246 | idx = start_idx; |
247 | ||
e04ed0a5 WYG |
248 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n", |
249 | agg->frame_count, agg->start_idx, idx); | |
743e015d WYG |
250 | iwlagn_set_tx_status(priv, |
251 | IEEE80211_SKB_CB( | |
252 | priv->txq[txq_id].txb[idx].skb), | |
253 | tx_resp, txq_id, true); | |
e04ed0a5 WYG |
254 | agg->wait_for_ba = 0; |
255 | } else { | |
256 | /* Two or more frames were attempted; expect block-ack */ | |
257 | u64 bitmap = 0; | |
f668da2f DH |
258 | |
259 | /* | |
260 | * Start is the lowest frame sent. It may not be the first | |
261 | * frame in the batch; we figure this out dynamically during | |
262 | * the following loop. | |
263 | */ | |
e04ed0a5 WYG |
264 | int start = agg->start_idx; |
265 | ||
266 | /* Construct bit-map of pending frames within Tx window */ | |
267 | for (i = 0; i < agg->frame_count; i++) { | |
268 | u16 sc; | |
269 | status = le16_to_cpu(frame_status[i].status); | |
270 | seq = le16_to_cpu(frame_status[i].sequence); | |
271 | idx = SEQ_TO_INDEX(seq); | |
272 | txq_id = SEQ_TO_QUEUE(seq); | |
273 | ||
814665fe WYG |
274 | if (status & AGG_TX_STATUS_MSK) |
275 | iwlagn_count_agg_tx_err_status(priv, status); | |
276 | ||
e04ed0a5 WYG |
277 | if (status & (AGG_TX_STATE_FEW_BYTES_MSK | |
278 | AGG_TX_STATE_ABORT_MSK)) | |
279 | continue; | |
280 | ||
281 | IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n", | |
282 | agg->frame_count, txq_id, idx); | |
e1b3fa0c WYG |
283 | IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), " |
284 | "try-count (0x%08x)\n", | |
285 | iwl_get_agg_tx_fail_reason(status), | |
286 | status & AGG_TX_STATUS_MSK, | |
287 | status & AGG_TX_TRY_MSK); | |
e04ed0a5 WYG |
288 | |
289 | hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx); | |
290 | if (!hdr) { | |
291 | IWL_ERR(priv, | |
292 | "BUG_ON idx doesn't point to valid skb" | |
293 | " idx=%d, txq_id=%d\n", idx, txq_id); | |
294 | return -1; | |
295 | } | |
296 | ||
297 | sc = le16_to_cpu(hdr->seq_ctrl); | |
298 | if (idx != (SEQ_TO_SN(sc) & 0xff)) { | |
299 | IWL_ERR(priv, | |
300 | "BUG_ON idx doesn't match seq control" | |
301 | " idx=%d, seq_idx=%d, seq=%d\n", | |
302 | idx, SEQ_TO_SN(sc), | |
303 | hdr->seq_ctrl); | |
304 | return -1; | |
305 | } | |
306 | ||
307 | IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n", | |
308 | i, idx, SEQ_TO_SN(sc)); | |
309 | ||
f668da2f DH |
310 | /* |
311 | * sh -> how many frames ahead of the starting frame is | |
312 | * the current one? | |
313 | * | |
314 | * Note that all frames sent in the batch must be in a | |
315 | * 64-frame window, so this number should be in [0,63]. | |
316 | * If outside of this window, then we've found a new | |
317 | * "first" frame in the batch and need to change start. | |
318 | */ | |
e04ed0a5 | 319 | sh = idx - start; |
f668da2f DH |
320 | |
321 | /* | |
322 | * If >= 64, out of window. start must be at the front | |
323 | * of the circular buffer, idx must be near the end of | |
324 | * the buffer, and idx is the new "first" frame. Shift | |
325 | * the indices around. | |
326 | */ | |
327 | if (sh >= 64) { | |
328 | /* Shift bitmap by start - idx, wrapped */ | |
329 | sh = 0x100 - idx + start; | |
e04ed0a5 | 330 | bitmap = bitmap << sh; |
f668da2f | 331 | /* Now idx is the new start so sh = 0 */ |
e04ed0a5 WYG |
332 | sh = 0; |
333 | start = idx; | |
f668da2f DH |
334 | /* |
335 | * If <= -64 then wraps the 256-pkt circular buffer | |
336 | * (e.g., start = 255 and idx = 0, sh should be 1) | |
337 | */ | |
338 | } else if (sh <= -64) { | |
339 | sh = 0x100 - start + idx; | |
340 | /* | |
341 | * If < 0 but > -64, out of window. idx is before start | |
342 | * but not wrapped. Shift the indices around. | |
343 | */ | |
344 | } else if (sh < 0) { | |
345 | /* Shift by how far start is ahead of idx */ | |
e04ed0a5 | 346 | sh = start - idx; |
e04ed0a5 | 347 | bitmap = bitmap << sh; |
f668da2f DH |
348 | /* Now idx is the new start so sh = 0 */ |
349 | start = idx; | |
e04ed0a5 WYG |
350 | sh = 0; |
351 | } | |
f668da2f | 352 | /* Sequence number start + sh was sent in this batch */ |
e04ed0a5 WYG |
353 | bitmap |= 1ULL << sh; |
354 | IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n", | |
355 | start, (unsigned long long)bitmap); | |
356 | } | |
357 | ||
f668da2f DH |
358 | /* |
359 | * Store the bitmap and possibly the new start, if we wrapped | |
360 | * the buffer above | |
361 | */ | |
e04ed0a5 WYG |
362 | agg->bitmap = bitmap; |
363 | agg->start_idx = start; | |
364 | IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n", | |
365 | agg->frame_count, agg->start_idx, | |
366 | (unsigned long long)agg->bitmap); | |
367 | ||
368 | if (bitmap) | |
369 | agg->wait_for_ba = 1; | |
370 | } | |
371 | return 0; | |
372 | } | |
373 | ||
04569cbe WYG |
374 | void iwl_check_abort_status(struct iwl_priv *priv, |
375 | u8 frame_count, u32 status) | |
376 | { | |
377 | if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) { | |
65550636 WYG |
378 | IWL_ERR(priv, "Tx flush command to flush out all frames\n"); |
379 | if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) | |
380 | queue_work(priv->workqueue, &priv->tx_flush); | |
04569cbe WYG |
381 | } |
382 | } | |
383 | ||
e04ed0a5 WYG |
384 | static void iwlagn_rx_reply_tx(struct iwl_priv *priv, |
385 | struct iwl_rx_mem_buffer *rxb) | |
386 | { | |
387 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
388 | u16 sequence = le16_to_cpu(pkt->hdr.sequence); | |
389 | int txq_id = SEQ_TO_QUEUE(sequence); | |
390 | int index = SEQ_TO_INDEX(sequence); | |
391 | struct iwl_tx_queue *txq = &priv->txq[txq_id]; | |
392 | struct ieee80211_tx_info *info; | |
898dade1 | 393 | struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0]; |
e04ed0a5 WYG |
394 | u32 status = le16_to_cpu(tx_resp->status.status); |
395 | int tid; | |
396 | int sta_id; | |
397 | int freed; | |
9c5ac091 | 398 | unsigned long flags; |
e04ed0a5 WYG |
399 | |
400 | if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) { | |
401 | IWL_ERR(priv, "Read index for DMA queue txq_id (%d) index %d " | |
402 | "is out of range [0-%d] %d %d\n", txq_id, | |
403 | index, txq->q.n_bd, txq->q.write_ptr, | |
404 | txq->q.read_ptr); | |
405 | return; | |
406 | } | |
407 | ||
ff0d91c3 | 408 | info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb); |
e04ed0a5 WYG |
409 | memset(&info->status, 0, sizeof(info->status)); |
410 | ||
898dade1 WYG |
411 | tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >> |
412 | IWLAGN_TX_RES_TID_POS; | |
413 | sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >> | |
414 | IWLAGN_TX_RES_RA_POS; | |
e04ed0a5 | 415 | |
9c5ac091 | 416 | spin_lock_irqsave(&priv->sta_lock, flags); |
e04ed0a5 WYG |
417 | if (txq->sched_retry) { |
418 | const u32 scd_ssn = iwlagn_get_scd_ssn(tx_resp); | |
9c5ac091 | 419 | struct iwl_ht_agg *agg; |
e04ed0a5 WYG |
420 | |
421 | agg = &priv->stations[sta_id].tid[tid].agg; | |
c6c996b5 WYG |
422 | /* |
423 | * If the BT kill count is non-zero, we'll get this | |
424 | * notification again. | |
425 | */ | |
426 | if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 && | |
7cb1b088 WYG |
427 | priv->cfg->bt_params && |
428 | priv->cfg->bt_params->advanced_bt_coexist) { | |
c6c996b5 WYG |
429 | IWL_WARN(priv, "receive reply tx with bt_kill\n"); |
430 | } | |
e04ed0a5 WYG |
431 | iwlagn_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index); |
432 | ||
433 | /* check if BAR is needed */ | |
434 | if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status)) | |
435 | info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; | |
436 | ||
437 | if (txq->q.read_ptr != (scd_ssn & 0xff)) { | |
438 | index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd); | |
439 | IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim " | |
440 | "scd_ssn=%d idx=%d txq=%d swq=%d\n", | |
441 | scd_ssn , index, txq_id, txq->swq_id); | |
442 | ||
74bcdb33 | 443 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
e04ed0a5 WYG |
444 | iwl_free_tfds_in_queue(priv, sta_id, tid, freed); |
445 | ||
446 | if (priv->mac80211_registered && | |
447 | (iwl_queue_space(&txq->q) > txq->q.low_mark) && | |
4bea9b99 | 448 | (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA)) |
549a04e0 | 449 | iwl_wake_queue(priv, txq); |
e04ed0a5 WYG |
450 | } |
451 | } else { | |
743e015d | 452 | iwlagn_set_tx_status(priv, info, tx_resp, txq_id, false); |
74bcdb33 | 453 | freed = iwlagn_tx_queue_reclaim(priv, txq_id, index); |
e04ed0a5 WYG |
454 | iwl_free_tfds_in_queue(priv, sta_id, tid, freed); |
455 | ||
456 | if (priv->mac80211_registered && | |
457 | (iwl_queue_space(&txq->q) > txq->q.low_mark)) | |
549a04e0 | 458 | iwl_wake_queue(priv, txq); |
e04ed0a5 WYG |
459 | } |
460 | ||
74bcdb33 | 461 | iwlagn_txq_check_empty(priv, sta_id, tid, txq_id); |
e04ed0a5 | 462 | |
04569cbe | 463 | iwl_check_abort_status(priv, tx_resp->frame_count, status); |
9c5ac091 | 464 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
e04ed0a5 WYG |
465 | } |
466 | ||
467 | void iwlagn_rx_handler_setup(struct iwl_priv *priv) | |
468 | { | |
469 | /* init calibration handlers */ | |
470 | priv->rx_handlers[CALIBRATION_RES_NOTIFICATION] = | |
471 | iwlagn_rx_calib_result; | |
472 | priv->rx_handlers[CALIBRATION_COMPLETE_NOTIFICATION] = | |
473 | iwlagn_rx_calib_complete; | |
474 | priv->rx_handlers[REPLY_TX] = iwlagn_rx_reply_tx; | |
475 | } | |
476 | ||
477 | void iwlagn_setup_deferred_work(struct iwl_priv *priv) | |
478 | { | |
479 | /* in agn, the tx power calibration is done in uCode */ | |
480 | priv->disable_tx_power_cal = 1; | |
481 | } | |
482 | ||
483 | int iwlagn_hw_valid_rtc_data_addr(u32 addr) | |
484 | { | |
485 | return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) && | |
486 | (addr < IWLAGN_RTC_DATA_UPPER_BOUND); | |
487 | } | |
488 | ||
489 | int iwlagn_send_tx_power(struct iwl_priv *priv) | |
490 | { | |
ab63c68a | 491 | struct iwlagn_tx_power_dbm_cmd tx_power_cmd; |
e04ed0a5 WYG |
492 | u8 tx_ant_cfg_cmd; |
493 | ||
4beeba7d SG |
494 | if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status), |
495 | "TX Power requested while scanning!\n")) | |
496 | return -EAGAIN; | |
497 | ||
e04ed0a5 WYG |
498 | /* half dBm need to multiply */ |
499 | tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt); | |
500 | ||
501 | if (priv->tx_power_lmt_in_half_dbm && | |
502 | priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) { | |
503 | /* | |
504 | * For the newer devices which using enhanced/extend tx power | |
505 | * table in EEPROM, the format is in half dBm. driver need to | |
506 | * convert to dBm format before report to mac80211. | |
507 | * By doing so, there is a possibility of 1/2 dBm resolution | |
508 | * lost. driver will perform "round-up" operation before | |
509 | * reporting, but it will cause 1/2 dBm tx power over the | |
510 | * regulatory limit. Perform the checking here, if the | |
511 | * "tx_power_user_lmt" is higher than EEPROM value (in | |
512 | * half-dBm format), lower the tx power based on EEPROM | |
513 | */ | |
514 | tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm; | |
515 | } | |
ab63c68a WYG |
516 | tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED; |
517 | tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO; | |
e04ed0a5 WYG |
518 | |
519 | if (IWL_UCODE_API(priv->ucode_ver) == 1) | |
520 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1; | |
521 | else | |
522 | tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD; | |
523 | ||
4cbf1b12 SG |
524 | return iwl_send_cmd_pdu(priv, tx_ant_cfg_cmd, sizeof(tx_power_cmd), |
525 | &tx_power_cmd); | |
e04ed0a5 WYG |
526 | } |
527 | ||
528 | void iwlagn_temperature(struct iwl_priv *priv) | |
529 | { | |
530 | /* store temperature from statistics (in Celsius) */ | |
f3aebeee | 531 | priv->temperature = |
325322ee | 532 | le32_to_cpu(priv->_agn.statistics.general.common.temperature); |
e04ed0a5 WYG |
533 | iwl_tt_handler(priv); |
534 | } | |
535 | ||
536 | u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv) | |
537 | { | |
538 | struct iwl_eeprom_calib_hdr { | |
539 | u8 version; | |
540 | u8 pa_type; | |
541 | u16 voltage; | |
542 | } *hdr; | |
543 | ||
544 | hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv, | |
7944f8e4 | 545 | EEPROM_CALIB_ALL); |
e04ed0a5 WYG |
546 | return hdr->version; |
547 | ||
548 | } | |
549 | ||
550 | /* | |
551 | * EEPROM | |
552 | */ | |
553 | static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address) | |
554 | { | |
555 | u16 offset = 0; | |
556 | ||
557 | if ((address & INDIRECT_ADDRESS) == 0) | |
558 | return address; | |
559 | ||
560 | switch (address & INDIRECT_TYPE_MSK) { | |
561 | case INDIRECT_HOST: | |
7944f8e4 | 562 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST); |
e04ed0a5 WYG |
563 | break; |
564 | case INDIRECT_GENERAL: | |
7944f8e4 | 565 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL); |
e04ed0a5 WYG |
566 | break; |
567 | case INDIRECT_REGULATORY: | |
7944f8e4 | 568 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY); |
e04ed0a5 WYG |
569 | break; |
570 | case INDIRECT_CALIBRATION: | |
7944f8e4 | 571 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION); |
e04ed0a5 WYG |
572 | break; |
573 | case INDIRECT_PROCESS_ADJST: | |
7944f8e4 | 574 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST); |
e04ed0a5 WYG |
575 | break; |
576 | case INDIRECT_OTHERS: | |
7944f8e4 | 577 | offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS); |
e04ed0a5 WYG |
578 | break; |
579 | default: | |
580 | IWL_ERR(priv, "illegal indirect type: 0x%X\n", | |
581 | address & INDIRECT_TYPE_MSK); | |
582 | break; | |
583 | } | |
584 | ||
585 | /* translate the offset from words to byte */ | |
586 | return (address & ADDRESS_MSK) + (offset << 1); | |
587 | } | |
588 | ||
589 | const u8 *iwlagn_eeprom_query_addr(const struct iwl_priv *priv, | |
590 | size_t offset) | |
591 | { | |
592 | u32 address = eeprom_indirect_address(priv, offset); | |
7cb1b088 | 593 | BUG_ON(address >= priv->cfg->base_params->eeprom_size); |
e04ed0a5 WYG |
594 | return &priv->eeprom[address]; |
595 | } | |
348ee7cd WYG |
596 | |
597 | struct iwl_mod_params iwlagn_mod_params = { | |
598 | .amsdu_size_8K = 1, | |
599 | .restart_fw = 1, | |
600 | /* the rest are 0 by default */ | |
601 | }; | |
74bcdb33 WYG |
602 | |
603 | void iwlagn_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) | |
604 | { | |
605 | unsigned long flags; | |
606 | int i; | |
607 | spin_lock_irqsave(&rxq->lock, flags); | |
608 | INIT_LIST_HEAD(&rxq->rx_free); | |
609 | INIT_LIST_HEAD(&rxq->rx_used); | |
610 | /* Fill the rx_used queue with _all_ of the Rx buffers */ | |
611 | for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { | |
612 | /* In the reset function, these buffers may have been allocated | |
613 | * to an SKB, so we need to unmap and free potential storage */ | |
614 | if (rxq->pool[i].page != NULL) { | |
615 | pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, | |
616 | PAGE_SIZE << priv->hw_params.rx_page_order, | |
617 | PCI_DMA_FROMDEVICE); | |
618 | __iwl_free_pages(priv, rxq->pool[i].page); | |
619 | rxq->pool[i].page = NULL; | |
620 | } | |
621 | list_add_tail(&rxq->pool[i].list, &rxq->rx_used); | |
622 | } | |
623 | ||
6aac74b4 ZY |
624 | for (i = 0; i < RX_QUEUE_SIZE; i++) |
625 | rxq->queue[i] = NULL; | |
626 | ||
74bcdb33 WYG |
627 | /* Set us so that we have processed and used all buffers, but have |
628 | * not restocked the Rx queue with fresh buffers */ | |
629 | rxq->read = rxq->write = 0; | |
630 | rxq->write_actual = 0; | |
631 | rxq->free_count = 0; | |
632 | spin_unlock_irqrestore(&rxq->lock, flags); | |
633 | } | |
634 | ||
635 | int iwlagn_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) | |
636 | { | |
637 | u32 rb_size; | |
638 | const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */ | |
639 | u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */ | |
640 | ||
7cb1b088 | 641 | if (!priv->cfg->base_params->use_isr_legacy) |
74bcdb33 WYG |
642 | rb_timeout = RX_RB_TIMEOUT; |
643 | ||
644 | if (priv->cfg->mod_params->amsdu_size_8K) | |
645 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K; | |
646 | else | |
647 | rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K; | |
648 | ||
649 | /* Stop Rx DMA */ | |
650 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); | |
651 | ||
652 | /* Reset driver's Rx queue write index */ | |
653 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0); | |
654 | ||
655 | /* Tell device where to find RBD circular buffer in DRAM */ | |
656 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG, | |
d5b25c90 | 657 | (u32)(rxq->bd_dma >> 8)); |
74bcdb33 WYG |
658 | |
659 | /* Tell device where in DRAM to update its Rx status */ | |
660 | iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG, | |
661 | rxq->rb_stts_dma >> 4); | |
662 | ||
663 | /* Enable Rx DMA | |
664 | * FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY is set because of HW bug in | |
665 | * the credit mechanism in 5000 HW RX FIFO | |
666 | * Direct rx interrupts to hosts | |
667 | * Rx buffer size 4 or 8k | |
668 | * RB timeout 0x10 | |
669 | * 256 RBDs | |
670 | */ | |
671 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, | |
672 | FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL | | |
673 | FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY | | |
674 | FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL | | |
675 | FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK | | |
676 | rb_size| | |
677 | (rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)| | |
678 | (rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS)); | |
679 | ||
680 | /* Set interrupt coalescing timer to default (2048 usecs) */ | |
681 | iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_TIMEOUT_DEF); | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
9597ebac JB |
686 | static void iwlagn_set_pwr_vmain(struct iwl_priv *priv) |
687 | { | |
688 | /* | |
689 | * (for documentation purposes) | |
690 | * to set power to V_AUX, do: | |
691 | ||
692 | if (pci_pme_capable(priv->pci_dev, PCI_D3cold)) | |
693 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, | |
694 | APMG_PS_CTRL_VAL_PWR_SRC_VAUX, | |
695 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
696 | */ | |
697 | ||
698 | iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG, | |
699 | APMG_PS_CTRL_VAL_PWR_SRC_VMAIN, | |
700 | ~APMG_PS_CTRL_MSK_PWR_SRC); | |
701 | } | |
702 | ||
74bcdb33 WYG |
703 | int iwlagn_hw_nic_init(struct iwl_priv *priv) |
704 | { | |
705 | unsigned long flags; | |
706 | struct iwl_rx_queue *rxq = &priv->rxq; | |
707 | int ret; | |
708 | ||
709 | /* nic_init */ | |
710 | spin_lock_irqsave(&priv->lock, flags); | |
711 | priv->cfg->ops->lib->apm_ops.init(priv); | |
712 | ||
713 | /* Set interrupt coalescing calibration timer to default (512 usecs) */ | |
714 | iwl_write8(priv, CSR_INT_COALESCING, IWL_HOST_INT_CALIB_TIMEOUT_DEF); | |
715 | ||
716 | spin_unlock_irqrestore(&priv->lock, flags); | |
717 | ||
9597ebac | 718 | iwlagn_set_pwr_vmain(priv); |
74bcdb33 WYG |
719 | |
720 | priv->cfg->ops->lib->apm_ops.config(priv); | |
721 | ||
722 | /* Allocate the RX queue, or reset if it is already allocated */ | |
723 | if (!rxq->bd) { | |
724 | ret = iwl_rx_queue_alloc(priv); | |
725 | if (ret) { | |
726 | IWL_ERR(priv, "Unable to initialize Rx queue\n"); | |
727 | return -ENOMEM; | |
728 | } | |
729 | } else | |
730 | iwlagn_rx_queue_reset(priv, rxq); | |
731 | ||
54b81550 | 732 | iwlagn_rx_replenish(priv); |
74bcdb33 WYG |
733 | |
734 | iwlagn_rx_init(priv, rxq); | |
735 | ||
736 | spin_lock_irqsave(&priv->lock, flags); | |
737 | ||
738 | rxq->need_update = 1; | |
739 | iwl_rx_queue_update_write_ptr(priv, rxq); | |
740 | ||
741 | spin_unlock_irqrestore(&priv->lock, flags); | |
742 | ||
470058e0 ZY |
743 | /* Allocate or reset and init all Tx and Command queues */ |
744 | if (!priv->txq) { | |
745 | ret = iwlagn_txq_ctx_alloc(priv); | |
746 | if (ret) | |
747 | return ret; | |
748 | } else | |
749 | iwlagn_txq_ctx_reset(priv); | |
74bcdb33 | 750 | |
f81c1f48 WYG |
751 | if (priv->cfg->base_params->shadow_reg_enable) { |
752 | /* enable shadow regs in HW */ | |
753 | iwl_set_bit(priv, CSR_MAC_SHADOW_REG_CTRL, | |
754 | 0x800FFFFF); | |
755 | } | |
756 | ||
74bcdb33 WYG |
757 | set_bit(STATUS_INIT, &priv->status); |
758 | ||
759 | return 0; | |
760 | } | |
54b81550 WYG |
761 | |
762 | /** | |
763 | * iwlagn_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr | |
764 | */ | |
765 | static inline __le32 iwlagn_dma_addr2rbd_ptr(struct iwl_priv *priv, | |
766 | dma_addr_t dma_addr) | |
767 | { | |
768 | return cpu_to_le32((u32)(dma_addr >> 8)); | |
769 | } | |
770 | ||
771 | /** | |
772 | * iwlagn_rx_queue_restock - refill RX queue from pre-allocated pool | |
773 | * | |
774 | * If there are slots in the RX queue that need to be restocked, | |
775 | * and we have free pre-allocated buffers, fill the ranks as much | |
776 | * as we can, pulling from rx_free. | |
777 | * | |
778 | * This moves the 'write' index forward to catch up with 'processed', and | |
779 | * also updates the memory address in the firmware to reference the new | |
780 | * target buffer. | |
781 | */ | |
782 | void iwlagn_rx_queue_restock(struct iwl_priv *priv) | |
783 | { | |
784 | struct iwl_rx_queue *rxq = &priv->rxq; | |
785 | struct list_head *element; | |
786 | struct iwl_rx_mem_buffer *rxb; | |
787 | unsigned long flags; | |
54b81550 WYG |
788 | |
789 | spin_lock_irqsave(&rxq->lock, flags); | |
54b81550 | 790 | while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) { |
6aac74b4 ZY |
791 | /* The overwritten rxb must be a used one */ |
792 | rxb = rxq->queue[rxq->write]; | |
793 | BUG_ON(rxb && rxb->page); | |
794 | ||
54b81550 WYG |
795 | /* Get next free Rx buffer, remove from free list */ |
796 | element = rxq->rx_free.next; | |
797 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); | |
798 | list_del(element); | |
799 | ||
800 | /* Point to Rx buffer via next RBD in circular buffer */ | |
801 | rxq->bd[rxq->write] = iwlagn_dma_addr2rbd_ptr(priv, | |
802 | rxb->page_dma); | |
803 | rxq->queue[rxq->write] = rxb; | |
804 | rxq->write = (rxq->write + 1) & RX_QUEUE_MASK; | |
805 | rxq->free_count--; | |
806 | } | |
807 | spin_unlock_irqrestore(&rxq->lock, flags); | |
808 | /* If the pre-allocated buffer pool is dropping low, schedule to | |
809 | * refill it */ | |
810 | if (rxq->free_count <= RX_LOW_WATERMARK) | |
811 | queue_work(priv->workqueue, &priv->rx_replenish); | |
812 | ||
813 | ||
814 | /* If we've added more space for the firmware to place data, tell it. | |
815 | * Increment device's write pointer in multiples of 8. */ | |
816 | if (rxq->write_actual != (rxq->write & ~0x7)) { | |
817 | spin_lock_irqsave(&rxq->lock, flags); | |
818 | rxq->need_update = 1; | |
819 | spin_unlock_irqrestore(&rxq->lock, flags); | |
820 | iwl_rx_queue_update_write_ptr(priv, rxq); | |
821 | } | |
822 | } | |
823 | ||
824 | /** | |
825 | * iwlagn_rx_replenish - Move all used packet from rx_used to rx_free | |
826 | * | |
827 | * When moving to rx_free an SKB is allocated for the slot. | |
828 | * | |
829 | * Also restock the Rx queue via iwl_rx_queue_restock. | |
830 | * This is called as a scheduled work item (except for during initialization) | |
831 | */ | |
832 | void iwlagn_rx_allocate(struct iwl_priv *priv, gfp_t priority) | |
833 | { | |
834 | struct iwl_rx_queue *rxq = &priv->rxq; | |
835 | struct list_head *element; | |
836 | struct iwl_rx_mem_buffer *rxb; | |
837 | struct page *page; | |
838 | unsigned long flags; | |
839 | gfp_t gfp_mask = priority; | |
840 | ||
841 | while (1) { | |
842 | spin_lock_irqsave(&rxq->lock, flags); | |
843 | if (list_empty(&rxq->rx_used)) { | |
844 | spin_unlock_irqrestore(&rxq->lock, flags); | |
845 | return; | |
846 | } | |
847 | spin_unlock_irqrestore(&rxq->lock, flags); | |
848 | ||
849 | if (rxq->free_count > RX_LOW_WATERMARK) | |
850 | gfp_mask |= __GFP_NOWARN; | |
851 | ||
852 | if (priv->hw_params.rx_page_order > 0) | |
853 | gfp_mask |= __GFP_COMP; | |
854 | ||
855 | /* Alloc a new receive buffer */ | |
856 | page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order); | |
857 | if (!page) { | |
858 | if (net_ratelimit()) | |
859 | IWL_DEBUG_INFO(priv, "alloc_pages failed, " | |
860 | "order: %d\n", | |
861 | priv->hw_params.rx_page_order); | |
862 | ||
863 | if ((rxq->free_count <= RX_LOW_WATERMARK) && | |
864 | net_ratelimit()) | |
865 | IWL_CRIT(priv, "Failed to alloc_pages with %s. Only %u free buffers remaining.\n", | |
866 | priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL", | |
867 | rxq->free_count); | |
868 | /* We don't reschedule replenish work here -- we will | |
869 | * call the restock method and if it still needs | |
870 | * more buffers it will schedule replenish */ | |
871 | return; | |
872 | } | |
873 | ||
874 | spin_lock_irqsave(&rxq->lock, flags); | |
875 | ||
876 | if (list_empty(&rxq->rx_used)) { | |
877 | spin_unlock_irqrestore(&rxq->lock, flags); | |
878 | __free_pages(page, priv->hw_params.rx_page_order); | |
879 | return; | |
880 | } | |
881 | element = rxq->rx_used.next; | |
882 | rxb = list_entry(element, struct iwl_rx_mem_buffer, list); | |
883 | list_del(element); | |
884 | ||
885 | spin_unlock_irqrestore(&rxq->lock, flags); | |
886 | ||
6aac74b4 | 887 | BUG_ON(rxb->page); |
54b81550 WYG |
888 | rxb->page = page; |
889 | /* Get physical address of the RB */ | |
890 | rxb->page_dma = pci_map_page(priv->pci_dev, page, 0, | |
891 | PAGE_SIZE << priv->hw_params.rx_page_order, | |
892 | PCI_DMA_FROMDEVICE); | |
893 | /* dma address must be no more than 36 bits */ | |
894 | BUG_ON(rxb->page_dma & ~DMA_BIT_MASK(36)); | |
895 | /* and also 256 byte aligned! */ | |
896 | BUG_ON(rxb->page_dma & DMA_BIT_MASK(8)); | |
897 | ||
898 | spin_lock_irqsave(&rxq->lock, flags); | |
899 | ||
900 | list_add_tail(&rxb->list, &rxq->rx_free); | |
901 | rxq->free_count++; | |
902 | priv->alloc_rxb_page++; | |
903 | ||
904 | spin_unlock_irqrestore(&rxq->lock, flags); | |
905 | } | |
906 | } | |
907 | ||
908 | void iwlagn_rx_replenish(struct iwl_priv *priv) | |
909 | { | |
910 | unsigned long flags; | |
911 | ||
912 | iwlagn_rx_allocate(priv, GFP_KERNEL); | |
913 | ||
914 | spin_lock_irqsave(&priv->lock, flags); | |
915 | iwlagn_rx_queue_restock(priv); | |
916 | spin_unlock_irqrestore(&priv->lock, flags); | |
917 | } | |
918 | ||
919 | void iwlagn_rx_replenish_now(struct iwl_priv *priv) | |
920 | { | |
921 | iwlagn_rx_allocate(priv, GFP_ATOMIC); | |
922 | ||
923 | iwlagn_rx_queue_restock(priv); | |
924 | } | |
925 | ||
926 | /* Assumes that the skb field of the buffers in 'pool' is kept accurate. | |
927 | * If an SKB has been detached, the POOL needs to have its SKB set to NULL | |
928 | * This free routine walks the list of POOL entries and if SKB is set to | |
929 | * non NULL it is unmapped and freed | |
930 | */ | |
931 | void iwlagn_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) | |
932 | { | |
933 | int i; | |
934 | for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { | |
935 | if (rxq->pool[i].page != NULL) { | |
936 | pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma, | |
937 | PAGE_SIZE << priv->hw_params.rx_page_order, | |
938 | PCI_DMA_FROMDEVICE); | |
939 | __iwl_free_pages(priv, rxq->pool[i].page); | |
940 | rxq->pool[i].page = NULL; | |
941 | } | |
942 | } | |
943 | ||
944 | dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd, | |
d5b25c90 | 945 | rxq->bd_dma); |
54b81550 WYG |
946 | dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status), |
947 | rxq->rb_stts, rxq->rb_stts_dma); | |
948 | rxq->bd = NULL; | |
949 | rxq->rb_stts = NULL; | |
950 | } | |
951 | ||
952 | int iwlagn_rxq_stop(struct iwl_priv *priv) | |
953 | { | |
954 | ||
955 | /* stop Rx DMA */ | |
956 | iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0); | |
957 | iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG, | |
958 | FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000); | |
959 | ||
960 | return 0; | |
961 | } | |
8d801080 WYG |
962 | |
963 | int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band) | |
964 | { | |
965 | int idx = 0; | |
966 | int band_offset = 0; | |
967 | ||
968 | /* HT rate format: mac80211 wants an MCS number, which is just LSB */ | |
969 | if (rate_n_flags & RATE_MCS_HT_MSK) { | |
970 | idx = (rate_n_flags & 0xff); | |
971 | return idx; | |
972 | /* Legacy rate format, search for match in table */ | |
973 | } else { | |
974 | if (band == IEEE80211_BAND_5GHZ) | |
975 | band_offset = IWL_FIRST_OFDM_RATE; | |
976 | for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) | |
977 | if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF)) | |
978 | return idx - band_offset; | |
979 | } | |
980 | ||
981 | return -1; | |
982 | } | |
983 | ||
984 | /* Calc max signal level (dBm) among 3 possible receivers */ | |
985 | static inline int iwlagn_calc_rssi(struct iwl_priv *priv, | |
986 | struct iwl_rx_phy_res *rx_resp) | |
987 | { | |
988 | return priv->cfg->ops->utils->calc_rssi(priv, rx_resp); | |
989 | } | |
990 | ||
8d801080 WYG |
991 | static u32 iwlagn_translate_rx_status(struct iwl_priv *priv, u32 decrypt_in) |
992 | { | |
993 | u32 decrypt_out = 0; | |
994 | ||
995 | if ((decrypt_in & RX_RES_STATUS_STATION_FOUND) == | |
996 | RX_RES_STATUS_STATION_FOUND) | |
997 | decrypt_out |= (RX_RES_STATUS_STATION_FOUND | | |
998 | RX_RES_STATUS_NO_STATION_INFO_MISMATCH); | |
999 | ||
1000 | decrypt_out |= (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK); | |
1001 | ||
1002 | /* packet was not encrypted */ | |
1003 | if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == | |
1004 | RX_RES_STATUS_SEC_TYPE_NONE) | |
1005 | return decrypt_out; | |
1006 | ||
1007 | /* packet was encrypted with unknown alg */ | |
1008 | if ((decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) == | |
1009 | RX_RES_STATUS_SEC_TYPE_ERR) | |
1010 | return decrypt_out; | |
1011 | ||
1012 | /* decryption was not done in HW */ | |
1013 | if ((decrypt_in & RX_MPDU_RES_STATUS_DEC_DONE_MSK) != | |
1014 | RX_MPDU_RES_STATUS_DEC_DONE_MSK) | |
1015 | return decrypt_out; | |
1016 | ||
1017 | switch (decrypt_in & RX_RES_STATUS_SEC_TYPE_MSK) { | |
1018 | ||
1019 | case RX_RES_STATUS_SEC_TYPE_CCMP: | |
1020 | /* alg is CCM: check MIC only */ | |
1021 | if (!(decrypt_in & RX_MPDU_RES_STATUS_MIC_OK)) | |
1022 | /* Bad MIC */ | |
1023 | decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; | |
1024 | else | |
1025 | decrypt_out |= RX_RES_STATUS_DECRYPT_OK; | |
1026 | ||
1027 | break; | |
1028 | ||
1029 | case RX_RES_STATUS_SEC_TYPE_TKIP: | |
1030 | if (!(decrypt_in & RX_MPDU_RES_STATUS_TTAK_OK)) { | |
1031 | /* Bad TTAK */ | |
1032 | decrypt_out |= RX_RES_STATUS_BAD_KEY_TTAK; | |
1033 | break; | |
1034 | } | |
1035 | /* fall through if TTAK OK */ | |
1036 | default: | |
1037 | if (!(decrypt_in & RX_MPDU_RES_STATUS_ICV_OK)) | |
1038 | decrypt_out |= RX_RES_STATUS_BAD_ICV_MIC; | |
1039 | else | |
1040 | decrypt_out |= RX_RES_STATUS_DECRYPT_OK; | |
1041 | break; | |
ee289b64 | 1042 | } |
8d801080 WYG |
1043 | |
1044 | IWL_DEBUG_RX(priv, "decrypt_in:0x%x decrypt_out = 0x%x\n", | |
1045 | decrypt_in, decrypt_out); | |
1046 | ||
1047 | return decrypt_out; | |
1048 | } | |
1049 | ||
1050 | static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv, | |
1051 | struct ieee80211_hdr *hdr, | |
1052 | u16 len, | |
1053 | u32 ampdu_status, | |
1054 | struct iwl_rx_mem_buffer *rxb, | |
1055 | struct ieee80211_rx_status *stats) | |
1056 | { | |
1057 | struct sk_buff *skb; | |
8d801080 WYG |
1058 | __le16 fc = hdr->frame_control; |
1059 | ||
1060 | /* We only process data packets if the interface is open */ | |
1061 | if (unlikely(!priv->is_open)) { | |
1062 | IWL_DEBUG_DROP_LIMIT(priv, | |
1063 | "Dropping packet while interface is not open.\n"); | |
1064 | return; | |
1065 | } | |
1066 | ||
1067 | /* In case of HW accelerated crypto and bad decryption, drop */ | |
1068 | if (!priv->cfg->mod_params->sw_crypto && | |
1069 | iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats)) | |
1070 | return; | |
1071 | ||
ecdf94b8 | 1072 | skb = dev_alloc_skb(128); |
8d801080 | 1073 | if (!skb) { |
ecdf94b8 | 1074 | IWL_ERR(priv, "dev_alloc_skb failed\n"); |
8d801080 WYG |
1075 | return; |
1076 | } | |
1077 | ||
8d801080 WYG |
1078 | skb_add_rx_frag(skb, 0, rxb->page, (void *)hdr - rxb_addr(rxb), len); |
1079 | ||
8d801080 WYG |
1080 | iwl_update_stats(priv, false, fc, len); |
1081 | memcpy(IEEE80211_SKB_RXCB(skb), stats, sizeof(*stats)); | |
1082 | ||
1083 | ieee80211_rx(priv->hw, skb); | |
8d801080 WYG |
1084 | priv->alloc_rxb_page--; |
1085 | rxb->page = NULL; | |
1086 | } | |
1087 | ||
1088 | /* Called for REPLY_RX (legacy ABG frames), or | |
1089 | * REPLY_RX_MPDU_CMD (HT high-throughput N frames). */ | |
1090 | void iwlagn_rx_reply_rx(struct iwl_priv *priv, | |
1091 | struct iwl_rx_mem_buffer *rxb) | |
1092 | { | |
1093 | struct ieee80211_hdr *header; | |
1094 | struct ieee80211_rx_status rx_status; | |
1095 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1096 | struct iwl_rx_phy_res *phy_res; | |
1097 | __le32 rx_pkt_status; | |
2fb291ee | 1098 | struct iwl_rx_mpdu_res_start *amsdu; |
8d801080 WYG |
1099 | u32 len; |
1100 | u32 ampdu_status; | |
1101 | u32 rate_n_flags; | |
1102 | ||
1103 | /** | |
1104 | * REPLY_RX and REPLY_RX_MPDU_CMD are handled differently. | |
1105 | * REPLY_RX: physical layer info is in this buffer | |
1106 | * REPLY_RX_MPDU_CMD: physical layer info was sent in separate | |
1107 | * command and cached in priv->last_phy_res | |
1108 | * | |
1109 | * Here we set up local variables depending on which command is | |
1110 | * received. | |
1111 | */ | |
1112 | if (pkt->hdr.cmd == REPLY_RX) { | |
1113 | phy_res = (struct iwl_rx_phy_res *)pkt->u.raw; | |
1114 | header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*phy_res) | |
1115 | + phy_res->cfg_phy_cnt); | |
1116 | ||
1117 | len = le16_to_cpu(phy_res->byte_count); | |
1118 | rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*phy_res) + | |
1119 | phy_res->cfg_phy_cnt + len); | |
1120 | ampdu_status = le32_to_cpu(rx_pkt_status); | |
1121 | } else { | |
05d57520 | 1122 | if (!priv->_agn.last_phy_res_valid) { |
8d801080 WYG |
1123 | IWL_ERR(priv, "MPDU frame without cached PHY data\n"); |
1124 | return; | |
1125 | } | |
05d57520 | 1126 | phy_res = &priv->_agn.last_phy_res; |
2fb291ee | 1127 | amsdu = (struct iwl_rx_mpdu_res_start *)pkt->u.raw; |
8d801080 WYG |
1128 | header = (struct ieee80211_hdr *)(pkt->u.raw + sizeof(*amsdu)); |
1129 | len = le16_to_cpu(amsdu->byte_count); | |
1130 | rx_pkt_status = *(__le32 *)(pkt->u.raw + sizeof(*amsdu) + len); | |
1131 | ampdu_status = iwlagn_translate_rx_status(priv, | |
1132 | le32_to_cpu(rx_pkt_status)); | |
1133 | } | |
1134 | ||
1135 | if ((unlikely(phy_res->cfg_phy_cnt > 20))) { | |
1136 | IWL_DEBUG_DROP(priv, "dsp size out of range [0,20]: %d/n", | |
1137 | phy_res->cfg_phy_cnt); | |
1138 | return; | |
1139 | } | |
1140 | ||
1141 | if (!(rx_pkt_status & RX_RES_STATUS_NO_CRC32_ERROR) || | |
1142 | !(rx_pkt_status & RX_RES_STATUS_NO_RXE_OVERFLOW)) { | |
1143 | IWL_DEBUG_RX(priv, "Bad CRC or FIFO: 0x%08X.\n", | |
1144 | le32_to_cpu(rx_pkt_status)); | |
1145 | return; | |
1146 | } | |
1147 | ||
1148 | /* This will be used in several places later */ | |
1149 | rate_n_flags = le32_to_cpu(phy_res->rate_n_flags); | |
1150 | ||
1151 | /* rx_status carries information about the packet to mac80211 */ | |
1152 | rx_status.mactime = le64_to_cpu(phy_res->timestamp); | |
1153 | rx_status.freq = | |
1154 | ieee80211_channel_to_frequency(le16_to_cpu(phy_res->channel)); | |
1155 | rx_status.band = (phy_res->phy_flags & RX_RES_PHY_FLAGS_BAND_24_MSK) ? | |
1156 | IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
1157 | rx_status.rate_idx = | |
1158 | iwlagn_hwrate_to_mac80211_idx(rate_n_flags, rx_status.band); | |
1159 | rx_status.flag = 0; | |
1160 | ||
1161 | /* TSF isn't reliable. In order to allow smooth user experience, | |
1162 | * this W/A doesn't propagate it to the mac80211 */ | |
1163 | /*rx_status.flag |= RX_FLAG_TSFT;*/ | |
1164 | ||
1165 | priv->ucode_beacon_time = le32_to_cpu(phy_res->beacon_time_stamp); | |
1166 | ||
1167 | /* Find max signal strength (dBm) among 3 antenna/receiver chains */ | |
1168 | rx_status.signal = iwlagn_calc_rssi(priv, phy_res); | |
1169 | ||
8d801080 | 1170 | iwl_dbg_log_rx_data_frame(priv, len, header); |
ed1b6e99 JB |
1171 | IWL_DEBUG_STATS_LIMIT(priv, "Rssi %d, TSF %llu\n", |
1172 | rx_status.signal, (unsigned long long)rx_status.mactime); | |
8d801080 WYG |
1173 | |
1174 | /* | |
1175 | * "antenna number" | |
1176 | * | |
1177 | * It seems that the antenna field in the phy flags value | |
1178 | * is actually a bit field. This is undefined by radiotap, | |
1179 | * it wants an actual antenna number but I always get "7" | |
1180 | * for most legacy frames I receive indicating that the | |
1181 | * same frame was received on all three RX chains. | |
1182 | * | |
1183 | * I think this field should be removed in favor of a | |
1184 | * new 802.11n radiotap field "RX chains" that is defined | |
1185 | * as a bitmask. | |
1186 | */ | |
1187 | rx_status.antenna = | |
1188 | (le16_to_cpu(phy_res->phy_flags) & RX_RES_PHY_FLAGS_ANTENNA_MSK) | |
1189 | >> RX_RES_PHY_FLAGS_ANTENNA_POS; | |
1190 | ||
1191 | /* set the preamble flag if appropriate */ | |
1192 | if (phy_res->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK) | |
1193 | rx_status.flag |= RX_FLAG_SHORTPRE; | |
1194 | ||
1195 | /* Set up the HT phy flags */ | |
1196 | if (rate_n_flags & RATE_MCS_HT_MSK) | |
1197 | rx_status.flag |= RX_FLAG_HT; | |
1198 | if (rate_n_flags & RATE_MCS_HT40_MSK) | |
1199 | rx_status.flag |= RX_FLAG_40MHZ; | |
1200 | if (rate_n_flags & RATE_MCS_SGI_MSK) | |
1201 | rx_status.flag |= RX_FLAG_SHORT_GI; | |
1202 | ||
1203 | iwlagn_pass_packet_to_mac80211(priv, header, len, ampdu_status, | |
1204 | rxb, &rx_status); | |
1205 | } | |
1206 | ||
1207 | /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD). | |
1208 | * This will be used later in iwl_rx_reply_rx() for REPLY_RX_MPDU_CMD. */ | |
1209 | void iwlagn_rx_reply_rx_phy(struct iwl_priv *priv, | |
05d57520 | 1210 | struct iwl_rx_mem_buffer *rxb) |
8d801080 WYG |
1211 | { |
1212 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
05d57520 JB |
1213 | priv->_agn.last_phy_res_valid = true; |
1214 | memcpy(&priv->_agn.last_phy_res, pkt->u.raw, | |
8d801080 WYG |
1215 | sizeof(struct iwl_rx_phy_res)); |
1216 | } | |
b6e4c55a JB |
1217 | |
1218 | static int iwl_get_single_channel_for_scan(struct iwl_priv *priv, | |
1dda6d28 JB |
1219 | struct ieee80211_vif *vif, |
1220 | enum ieee80211_band band, | |
1221 | struct iwl_scan_channel *scan_ch) | |
b6e4c55a JB |
1222 | { |
1223 | const struct ieee80211_supported_band *sband; | |
b6e4c55a JB |
1224 | u16 passive_dwell = 0; |
1225 | u16 active_dwell = 0; | |
14023641 | 1226 | int added = 0; |
b6e4c55a JB |
1227 | u16 channel = 0; |
1228 | ||
1229 | sband = iwl_get_hw_mode(priv, band); | |
1230 | if (!sband) { | |
1231 | IWL_ERR(priv, "invalid band\n"); | |
1232 | return added; | |
1233 | } | |
1234 | ||
1235 | active_dwell = iwl_get_active_dwell_time(priv, band, 0); | |
1dda6d28 | 1236 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
b6e4c55a JB |
1237 | |
1238 | if (passive_dwell <= active_dwell) | |
1239 | passive_dwell = active_dwell + 1; | |
1240 | ||
14023641 | 1241 | channel = iwl_get_single_channel_number(priv, band); |
b6e4c55a JB |
1242 | if (channel) { |
1243 | scan_ch->channel = cpu_to_le16(channel); | |
1244 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; | |
1245 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
1246 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
1247 | /* Set txpower levels to defaults */ | |
1248 | scan_ch->dsp_atten = 110; | |
1249 | if (band == IEEE80211_BAND_5GHZ) | |
1250 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
1251 | else | |
1252 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); | |
1253 | added++; | |
1254 | } else | |
1255 | IWL_ERR(priv, "no valid channel found\n"); | |
1256 | return added; | |
1257 | } | |
1258 | ||
1259 | static int iwl_get_channels_for_scan(struct iwl_priv *priv, | |
1dda6d28 | 1260 | struct ieee80211_vif *vif, |
b6e4c55a JB |
1261 | enum ieee80211_band band, |
1262 | u8 is_active, u8 n_probes, | |
1263 | struct iwl_scan_channel *scan_ch) | |
1264 | { | |
1265 | struct ieee80211_channel *chan; | |
1266 | const struct ieee80211_supported_band *sband; | |
1267 | const struct iwl_channel_info *ch_info; | |
1268 | u16 passive_dwell = 0; | |
1269 | u16 active_dwell = 0; | |
1270 | int added, i; | |
1271 | u16 channel; | |
1272 | ||
1273 | sband = iwl_get_hw_mode(priv, band); | |
1274 | if (!sband) | |
1275 | return 0; | |
1276 | ||
1277 | active_dwell = iwl_get_active_dwell_time(priv, band, n_probes); | |
1dda6d28 | 1278 | passive_dwell = iwl_get_passive_dwell_time(priv, band, vif); |
b6e4c55a JB |
1279 | |
1280 | if (passive_dwell <= active_dwell) | |
1281 | passive_dwell = active_dwell + 1; | |
1282 | ||
1283 | for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) { | |
1284 | chan = priv->scan_request->channels[i]; | |
1285 | ||
1286 | if (chan->band != band) | |
1287 | continue; | |
1288 | ||
81e95430 | 1289 | channel = chan->hw_value; |
b6e4c55a JB |
1290 | scan_ch->channel = cpu_to_le16(channel); |
1291 | ||
1292 | ch_info = iwl_get_channel_info(priv, band, channel); | |
1293 | if (!is_channel_valid(ch_info)) { | |
1294 | IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n", | |
1295 | channel); | |
1296 | continue; | |
1297 | } | |
1298 | ||
1299 | if (!is_active || is_channel_passive(ch_info) || | |
1300 | (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) | |
1301 | scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE; | |
1302 | else | |
1303 | scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE; | |
1304 | ||
1305 | if (n_probes) | |
1306 | scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes); | |
1307 | ||
1308 | scan_ch->active_dwell = cpu_to_le16(active_dwell); | |
1309 | scan_ch->passive_dwell = cpu_to_le16(passive_dwell); | |
1310 | ||
1311 | /* Set txpower levels to defaults */ | |
1312 | scan_ch->dsp_atten = 110; | |
1313 | ||
1314 | /* NOTE: if we were doing 6Mb OFDM for scans we'd use | |
1315 | * power level: | |
1316 | * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3; | |
1317 | */ | |
1318 | if (band == IEEE80211_BAND_5GHZ) | |
1319 | scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3; | |
1320 | else | |
1321 | scan_ch->tx_gain = ((1 << 5) | (5 << 3)); | |
1322 | ||
1323 | IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n", | |
1324 | channel, le32_to_cpu(scan_ch->type), | |
1325 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? | |
1326 | "ACTIVE" : "PASSIVE", | |
1327 | (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ? | |
1328 | active_dwell : passive_dwell); | |
1329 | ||
1330 | scan_ch++; | |
1331 | added++; | |
1332 | } | |
1333 | ||
1334 | IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added); | |
1335 | return added; | |
1336 | } | |
1337 | ||
3eecce52 | 1338 | int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif) |
b6e4c55a JB |
1339 | { |
1340 | struct iwl_host_cmd cmd = { | |
1341 | .id = REPLY_SCAN_CMD, | |
1342 | .len = sizeof(struct iwl_scan_cmd), | |
1343 | .flags = CMD_SIZE_HUGE, | |
1344 | }; | |
1345 | struct iwl_scan_cmd *scan; | |
a194e324 | 1346 | struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; |
b6e4c55a JB |
1347 | u32 rate_flags = 0; |
1348 | u16 cmd_len; | |
1349 | u16 rx_chain = 0; | |
1350 | enum ieee80211_band band; | |
1351 | u8 n_probes = 0; | |
1352 | u8 rx_ant = priv->hw_params.valid_rx_ant; | |
1353 | u8 rate; | |
1354 | bool is_active = false; | |
1355 | int chan_mod; | |
1356 | u8 active_chains; | |
0e1654fa | 1357 | u8 scan_tx_antennas = priv->hw_params.valid_tx_ant; |
3eecce52 JB |
1358 | int ret; |
1359 | ||
1360 | lockdep_assert_held(&priv->mutex); | |
b6e4c55a | 1361 | |
a194e324 JB |
1362 | if (vif) |
1363 | ctx = iwl_rxon_ctx_from_vif(vif); | |
1364 | ||
b6e4c55a JB |
1365 | if (!priv->scan_cmd) { |
1366 | priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) + | |
1367 | IWL_MAX_SCAN_SIZE, GFP_KERNEL); | |
1368 | if (!priv->scan_cmd) { | |
1369 | IWL_DEBUG_SCAN(priv, | |
1370 | "fail to allocate memory for scan\n"); | |
3eecce52 | 1371 | return -ENOMEM; |
b6e4c55a JB |
1372 | } |
1373 | } | |
1374 | scan = priv->scan_cmd; | |
1375 | memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE); | |
1376 | ||
1377 | scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH; | |
1378 | scan->quiet_time = IWL_ACTIVE_QUIET_TIME; | |
1379 | ||
246ed355 | 1380 | if (iwl_is_any_associated(priv)) { |
b6e4c55a JB |
1381 | u16 interval = 0; |
1382 | u32 extra; | |
1383 | u32 suspend_time = 100; | |
1384 | u32 scan_suspend_time = 100; | |
1385 | unsigned long flags; | |
1386 | ||
1387 | IWL_DEBUG_INFO(priv, "Scanning while associated...\n"); | |
1388 | spin_lock_irqsave(&priv->lock, flags); | |
a6e492b9 JL |
1389 | if (priv->is_internal_short_scan) |
1390 | interval = 0; | |
1391 | else | |
1392 | interval = vif->bss_conf.beacon_int; | |
b6e4c55a JB |
1393 | spin_unlock_irqrestore(&priv->lock, flags); |
1394 | ||
1395 | scan->suspend_time = 0; | |
1396 | scan->max_out_time = cpu_to_le32(200 * 1024); | |
1397 | if (!interval) | |
1398 | interval = suspend_time; | |
1399 | ||
1400 | extra = (suspend_time / interval) << 22; | |
1401 | scan_suspend_time = (extra | | |
1402 | ((suspend_time % interval) * 1024)); | |
1403 | scan->suspend_time = cpu_to_le32(scan_suspend_time); | |
1404 | IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n", | |
1405 | scan_suspend_time, interval); | |
1406 | } | |
1407 | ||
1408 | if (priv->is_internal_short_scan) { | |
1409 | IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n"); | |
1410 | } else if (priv->scan_request->n_ssids) { | |
1411 | int i, p = 0; | |
1412 | IWL_DEBUG_SCAN(priv, "Kicking off active scan\n"); | |
1413 | for (i = 0; i < priv->scan_request->n_ssids; i++) { | |
1414 | /* always does wildcard anyway */ | |
1415 | if (!priv->scan_request->ssids[i].ssid_len) | |
1416 | continue; | |
1417 | scan->direct_scan[p].id = WLAN_EID_SSID; | |
1418 | scan->direct_scan[p].len = | |
1419 | priv->scan_request->ssids[i].ssid_len; | |
1420 | memcpy(scan->direct_scan[p].ssid, | |
1421 | priv->scan_request->ssids[i].ssid, | |
1422 | priv->scan_request->ssids[i].ssid_len); | |
1423 | n_probes++; | |
1424 | p++; | |
1425 | } | |
1426 | is_active = true; | |
1427 | } else | |
1428 | IWL_DEBUG_SCAN(priv, "Start passive scan.\n"); | |
1429 | ||
1430 | scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK; | |
a194e324 | 1431 | scan->tx_cmd.sta_id = ctx->bcast_sta_id; |
b6e4c55a JB |
1432 | scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE; |
1433 | ||
1434 | switch (priv->scan_band) { | |
1435 | case IEEE80211_BAND_2GHZ: | |
1436 | scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK; | |
246ed355 JB |
1437 | chan_mod = le32_to_cpu( |
1438 | priv->contexts[IWL_RXON_CTX_BSS].active.flags & | |
1439 | RXON_FLG_CHANNEL_MODE_MSK) | |
b6e4c55a JB |
1440 | >> RXON_FLG_CHANNEL_MODE_POS; |
1441 | if (chan_mod == CHANNEL_MODE_PURE_40) { | |
1442 | rate = IWL_RATE_6M_PLCP; | |
1443 | } else { | |
1444 | rate = IWL_RATE_1M_PLCP; | |
1445 | rate_flags = RATE_MCS_CCK_MSK; | |
1446 | } | |
d44ae69e JB |
1447 | /* |
1448 | * Internal scans are passive, so we can indiscriminately set | |
1449 | * the BT ignore flag on 2.4 GHz since it applies to TX only. | |
1450 | */ | |
7cb1b088 WYG |
1451 | if (priv->cfg->bt_params && |
1452 | priv->cfg->bt_params->advanced_bt_coexist) | |
d44ae69e | 1453 | scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT; |
b6e4c55a JB |
1454 | break; |
1455 | case IEEE80211_BAND_5GHZ: | |
1456 | rate = IWL_RATE_6M_PLCP; | |
b6e4c55a JB |
1457 | break; |
1458 | default: | |
3eecce52 JB |
1459 | IWL_WARN(priv, "Invalid scan band\n"); |
1460 | return -EIO; | |
b6e4c55a JB |
1461 | } |
1462 | ||
085fbca2 JB |
1463 | /* |
1464 | * If active scanning is requested but a certain channel is | |
1465 | * marked passive, we can do active scanning if we detect | |
1466 | * transmissions. | |
1467 | * | |
1468 | * There is an issue with some firmware versions that triggers | |
1469 | * a sysassert on a "good CRC threshold" of zero (== disabled), | |
1470 | * on a radar channel even though this means that we should NOT | |
1471 | * send probes. | |
1472 | * | |
1473 | * The "good CRC threshold" is the number of frames that we | |
1474 | * need to receive during our dwell time on a channel before | |
1475 | * sending out probes -- setting this to a huge value will | |
1476 | * mean we never reach it, but at the same time work around | |
1477 | * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER | |
1478 | * here instead of IWL_GOOD_CRC_TH_DISABLED. | |
1479 | */ | |
1480 | scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT : | |
1481 | IWL_GOOD_CRC_TH_NEVER; | |
1482 | ||
b6e4c55a JB |
1483 | band = priv->scan_band; |
1484 | ||
0e1654fa JB |
1485 | if (priv->cfg->scan_rx_antennas[band]) |
1486 | rx_ant = priv->cfg->scan_rx_antennas[band]; | |
e7cb4955 | 1487 | |
0e1654fa JB |
1488 | if (priv->cfg->scan_tx_antennas[band]) |
1489 | scan_tx_antennas = priv->cfg->scan_tx_antennas[band]; | |
1490 | ||
7cb1b088 WYG |
1491 | if (priv->cfg->bt_params && |
1492 | priv->cfg->bt_params->advanced_bt_coexist && | |
1493 | priv->bt_full_concurrent) { | |
bee008b7 | 1494 | /* operated as 1x1 in full concurrency mode */ |
7cb1b088 WYG |
1495 | scan_tx_antennas = first_antenna( |
1496 | priv->cfg->scan_tx_antennas[band]); | |
bee008b7 WYG |
1497 | } |
1498 | ||
0e1654fa JB |
1499 | priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band], |
1500 | scan_tx_antennas); | |
b6e4c55a JB |
1501 | rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]); |
1502 | scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags); | |
1503 | ||
1504 | /* In power save mode use one chain, otherwise use all chains */ | |
1505 | if (test_bit(STATUS_POWER_PMI, &priv->status)) { | |
1506 | /* rx_ant has been set to all valid chains previously */ | |
1507 | active_chains = rx_ant & | |
1508 | ((u8)(priv->chain_noise_data.active_chains)); | |
1509 | if (!active_chains) | |
1510 | active_chains = rx_ant; | |
1511 | ||
1512 | IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n", | |
1513 | priv->chain_noise_data.active_chains); | |
1514 | ||
1515 | rx_ant = first_antenna(active_chains); | |
1516 | } | |
7cb1b088 WYG |
1517 | if (priv->cfg->bt_params && |
1518 | priv->cfg->bt_params->advanced_bt_coexist && | |
1519 | priv->bt_full_concurrent) { | |
bee008b7 WYG |
1520 | /* operated as 1x1 in full concurrency mode */ |
1521 | rx_ant = first_antenna(rx_ant); | |
1522 | } | |
1523 | ||
b6e4c55a JB |
1524 | /* MIMO is not used here, but value is required */ |
1525 | rx_chain |= priv->hw_params.valid_rx_ant << RXON_RX_CHAIN_VALID_POS; | |
1526 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
1527 | rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS; | |
1528 | rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS; | |
1529 | scan->rx_chain = cpu_to_le16(rx_chain); | |
1530 | if (!priv->is_internal_short_scan) { | |
1531 | cmd_len = iwl_fill_probe_req(priv, | |
1532 | (struct ieee80211_mgmt *)scan->data, | |
3a0b9aad | 1533 | vif->addr, |
b6e4c55a JB |
1534 | priv->scan_request->ie, |
1535 | priv->scan_request->ie_len, | |
1536 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); | |
1537 | } else { | |
3a0b9aad | 1538 | /* use bcast addr, will not be transmitted but must be valid */ |
b6e4c55a JB |
1539 | cmd_len = iwl_fill_probe_req(priv, |
1540 | (struct ieee80211_mgmt *)scan->data, | |
3a0b9aad | 1541 | iwl_bcast_addr, NULL, 0, |
b6e4c55a JB |
1542 | IWL_MAX_SCAN_SIZE - sizeof(*scan)); |
1543 | ||
1544 | } | |
1545 | scan->tx_cmd.len = cpu_to_le16(cmd_len); | |
b6e4c55a JB |
1546 | |
1547 | scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK | | |
1548 | RXON_FILTER_BCON_AWARE_MSK); | |
1549 | ||
1550 | if (priv->is_internal_short_scan) { | |
1551 | scan->channel_count = | |
1dda6d28 | 1552 | iwl_get_single_channel_for_scan(priv, vif, band, |
b6e4c55a JB |
1553 | (void *)&scan->data[le16_to_cpu( |
1554 | scan->tx_cmd.len)]); | |
1555 | } else { | |
1556 | scan->channel_count = | |
1dda6d28 | 1557 | iwl_get_channels_for_scan(priv, vif, band, |
b6e4c55a JB |
1558 | is_active, n_probes, |
1559 | (void *)&scan->data[le16_to_cpu( | |
1560 | scan->tx_cmd.len)]); | |
1561 | } | |
1562 | if (scan->channel_count == 0) { | |
1563 | IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count); | |
3eecce52 | 1564 | return -EIO; |
b6e4c55a JB |
1565 | } |
1566 | ||
1567 | cmd.len += le16_to_cpu(scan->tx_cmd.len) + | |
1568 | scan->channel_count * sizeof(struct iwl_scan_channel); | |
1569 | cmd.data = scan; | |
1570 | scan->len = cpu_to_le16(cmd.len); | |
1571 | ||
1cf26373 JB |
1572 | /* set scan bit here for PAN params */ |
1573 | set_bit(STATUS_SCAN_HW, &priv->status); | |
1574 | ||
3eecce52 JB |
1575 | if (priv->cfg->ops->hcmd->set_pan_params) { |
1576 | ret = priv->cfg->ops->hcmd->set_pan_params(priv); | |
1577 | if (ret) | |
1578 | return ret; | |
1579 | } | |
b6e4c55a | 1580 | |
3eecce52 JB |
1581 | ret = iwl_send_cmd_sync(priv, &cmd); |
1582 | if (ret) { | |
1583 | clear_bit(STATUS_SCAN_HW, &priv->status); | |
1584 | if (priv->cfg->ops->hcmd->set_pan_params) | |
1585 | priv->cfg->ops->hcmd->set_pan_params(priv); | |
1586 | } | |
b6e4c55a | 1587 | |
3eecce52 | 1588 | return ret; |
b6e4c55a | 1589 | } |
1fa61b2e JB |
1590 | |
1591 | int iwlagn_manage_ibss_station(struct iwl_priv *priv, | |
1592 | struct ieee80211_vif *vif, bool add) | |
1593 | { | |
fd1af15d JB |
1594 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; |
1595 | ||
1fa61b2e | 1596 | if (add) |
a30e3112 JB |
1597 | return iwlagn_add_bssid_station(priv, vif_priv->ctx, |
1598 | vif->bss_conf.bssid, | |
1599 | &vif_priv->ibss_bssid_sta_id); | |
fd1af15d JB |
1600 | return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id, |
1601 | vif->bss_conf.bssid); | |
1fa61b2e | 1602 | } |
1ff504e0 JB |
1603 | |
1604 | void iwl_free_tfds_in_queue(struct iwl_priv *priv, | |
1605 | int sta_id, int tid, int freed) | |
1606 | { | |
a24d52f3 | 1607 | lockdep_assert_held(&priv->sta_lock); |
9c5ac091 | 1608 | |
1ff504e0 JB |
1609 | if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed) |
1610 | priv->stations[sta_id].tid[tid].tfds_in_queue -= freed; | |
1611 | else { | |
1612 | IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n", | |
1613 | priv->stations[sta_id].tid[tid].tfds_in_queue, | |
1614 | freed); | |
1615 | priv->stations[sta_id].tid[tid].tfds_in_queue = 0; | |
1616 | } | |
1617 | } | |
716c74b0 WYG |
1618 | |
1619 | #define IWL_FLUSH_WAIT_MS 2000 | |
1620 | ||
1621 | int iwlagn_wait_tx_queue_empty(struct iwl_priv *priv) | |
1622 | { | |
1623 | struct iwl_tx_queue *txq; | |
1624 | struct iwl_queue *q; | |
1625 | int cnt; | |
1626 | unsigned long now = jiffies; | |
1627 | int ret = 0; | |
1628 | ||
1629 | /* waiting for all the tx frames complete might take a while */ | |
1630 | for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { | |
13bb9483 | 1631 | if (cnt == priv->cmd_queue) |
716c74b0 WYG |
1632 | continue; |
1633 | txq = &priv->txq[cnt]; | |
1634 | q = &txq->q; | |
1635 | while (q->read_ptr != q->write_ptr && !time_after(jiffies, | |
1636 | now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) | |
1637 | msleep(1); | |
1638 | ||
1639 | if (q->read_ptr != q->write_ptr) { | |
1640 | IWL_ERR(priv, "fail to flush all tx fifo queues\n"); | |
1641 | ret = -ETIMEDOUT; | |
1642 | break; | |
1643 | } | |
1644 | } | |
1645 | return ret; | |
1646 | } | |
1647 | ||
1648 | #define IWL_TX_QUEUE_MSK 0xfffff | |
1649 | ||
1650 | /** | |
1651 | * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode | |
1652 | * | |
1653 | * pre-requirements: | |
1654 | * 1. acquire mutex before calling | |
1655 | * 2. make sure rf is on and not in exit state | |
1656 | */ | |
1657 | int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control) | |
1658 | { | |
1659 | struct iwl_txfifo_flush_cmd flush_cmd; | |
1660 | struct iwl_host_cmd cmd = { | |
1661 | .id = REPLY_TXFIFO_FLUSH, | |
1662 | .len = sizeof(struct iwl_txfifo_flush_cmd), | |
1663 | .flags = CMD_SYNC, | |
1664 | .data = &flush_cmd, | |
1665 | }; | |
1666 | ||
1667 | might_sleep(); | |
1668 | ||
1669 | memset(&flush_cmd, 0, sizeof(flush_cmd)); | |
1670 | flush_cmd.fifo_control = IWL_TX_FIFO_VO_MSK | IWL_TX_FIFO_VI_MSK | | |
1671 | IWL_TX_FIFO_BE_MSK | IWL_TX_FIFO_BK_MSK; | |
1672 | if (priv->cfg->sku & IWL_SKU_N) | |
1673 | flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK; | |
1674 | ||
1675 | IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n", | |
1676 | flush_cmd.fifo_control); | |
1677 | flush_cmd.flush_control = cpu_to_le16(flush_control); | |
1678 | ||
1679 | return iwl_send_cmd(priv, &cmd); | |
1680 | } | |
65550636 WYG |
1681 | |
1682 | void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control) | |
1683 | { | |
1684 | mutex_lock(&priv->mutex); | |
1685 | ieee80211_stop_queues(priv->hw); | |
1686 | if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) { | |
1687 | IWL_ERR(priv, "flush request fail\n"); | |
1688 | goto done; | |
1689 | } | |
1690 | IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n"); | |
1691 | iwlagn_wait_tx_queue_empty(priv); | |
1692 | done: | |
1693 | ieee80211_wake_queues(priv->hw); | |
1694 | mutex_unlock(&priv->mutex); | |
1695 | } | |
b6e116e8 WYG |
1696 | |
1697 | /* | |
1698 | * BT coex | |
1699 | */ | |
1700 | /* | |
1701 | * Macros to access the lookup table. | |
1702 | * | |
1703 | * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req, | |
1704 | * wifi_prio, wifi_txrx and wifi_sh_ant_req. | |
1705 | * | |
1706 | * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH | |
1707 | * | |
1708 | * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits | |
1709 | * one after another in 32-bit registers, and "registers" 0 through 7 contain | |
1710 | * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order). | |
1711 | * | |
1712 | * These macros encode that format. | |
1713 | */ | |
1714 | #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \ | |
1715 | wifi_txrx, wifi_sh_ant_req) \ | |
1716 | (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \ | |
1717 | (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6)) | |
1718 | ||
1719 | #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \ | |
1720 | lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f))) | |
1721 | #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1722 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1723 | (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
1724 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
1725 | wifi_sh_ant_req)))) | |
1726 | #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1727 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1728 | LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
1729 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
1730 | wifi_sh_ant_req)) | |
1731 | #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \ | |
1732 | wifi_req, wifi_prio, wifi_txrx, \ | |
1733 | wifi_sh_ant_req) \ | |
1734 | LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \ | |
1735 | bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \ | |
1736 | wifi_sh_ant_req)) | |
1737 | ||
1738 | #define LUT_WLAN_KILL_OP(lut, op, val) \ | |
1739 | lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e))) | |
1740 | #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1741 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1742 | (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1743 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)))) | |
1744 | #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1745 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1746 | LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1747 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
1748 | #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1749 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1750 | LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1751 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
1752 | ||
1753 | #define LUT_ANT_SWITCH_OP(lut, op, val) \ | |
1754 | lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1))) | |
1755 | #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1756 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1757 | (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1758 | wifi_req, wifi_prio, wifi_txrx, \ | |
1759 | wifi_sh_ant_req)))) | |
1760 | #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1761 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1762 | LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1763 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
1764 | #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \ | |
1765 | wifi_prio, wifi_txrx, wifi_sh_ant_req) \ | |
1766 | LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \ | |
1767 | wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req)) | |
1768 | ||
1769 | static const __le32 iwlagn_def_3w_lookup[12] = { | |
1770 | cpu_to_le32(0xaaaaaaaa), | |
1771 | cpu_to_le32(0xaaaaaaaa), | |
1772 | cpu_to_le32(0xaeaaaaaa), | |
1773 | cpu_to_le32(0xaaaaaaaa), | |
1774 | cpu_to_le32(0xcc00ff28), | |
1775 | cpu_to_le32(0x0000aaaa), | |
1776 | cpu_to_le32(0xcc00aaaa), | |
1777 | cpu_to_le32(0x0000aaaa), | |
1778 | cpu_to_le32(0xc0004000), | |
1779 | cpu_to_le32(0x00004000), | |
1780 | cpu_to_le32(0xf0005000), | |
1781 | cpu_to_le32(0xf0004000), | |
1782 | }; | |
1783 | ||
1784 | static const __le32 iwlagn_concurrent_lookup[12] = { | |
1785 | cpu_to_le32(0xaaaaaaaa), | |
1786 | cpu_to_le32(0xaaaaaaaa), | |
1787 | cpu_to_le32(0xaaaaaaaa), | |
1788 | cpu_to_le32(0xaaaaaaaa), | |
1789 | cpu_to_le32(0xaaaaaaaa), | |
1790 | cpu_to_le32(0xaaaaaaaa), | |
1791 | cpu_to_le32(0xaaaaaaaa), | |
1792 | cpu_to_le32(0xaaaaaaaa), | |
1793 | cpu_to_le32(0x00000000), | |
1794 | cpu_to_le32(0x00000000), | |
1795 | cpu_to_le32(0x00000000), | |
1796 | cpu_to_le32(0x00000000), | |
1797 | }; | |
1798 | ||
1799 | void iwlagn_send_advance_bt_config(struct iwl_priv *priv) | |
1800 | { | |
1801 | struct iwlagn_bt_cmd bt_cmd = { | |
1802 | .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT, | |
1803 | .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT, | |
1804 | .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT, | |
1805 | .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT, | |
1806 | }; | |
1807 | ||
1808 | BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) != | |
1809 | sizeof(bt_cmd.bt3_lookup_table)); | |
1810 | ||
7cb1b088 WYG |
1811 | if (priv->cfg->bt_params) |
1812 | bt_cmd.prio_boost = priv->cfg->bt_params->bt_prio_boost; | |
1813 | else | |
1814 | bt_cmd.prio_boost = 0; | |
b6e116e8 WYG |
1815 | bt_cmd.kill_ack_mask = priv->kill_ack_mask; |
1816 | bt_cmd.kill_cts_mask = priv->kill_cts_mask; | |
1817 | bt_cmd.valid = priv->bt_valid; | |
09f250ac WYG |
1818 | bt_cmd.tx_prio_boost = 0; |
1819 | bt_cmd.rx_prio_boost = 0; | |
b6e116e8 WYG |
1820 | |
1821 | /* | |
1822 | * Configure BT coex mode to "no coexistence" when the | |
1823 | * user disabled BT coexistence, we have no interface | |
1824 | * (might be in monitor mode), or the interface is in | |
1825 | * IBSS mode (no proper uCode support for coex then). | |
1826 | */ | |
1827 | if (!bt_coex_active || priv->iw_mode == NL80211_IFTYPE_ADHOC) { | |
1828 | bt_cmd.flags = 0; | |
1829 | } else { | |
1830 | bt_cmd.flags = IWLAGN_BT_FLAG_COEX_MODE_3W << | |
1831 | IWLAGN_BT_FLAG_COEX_MODE_SHIFT; | |
e366176e WYG |
1832 | if (priv->cfg->bt_params && |
1833 | priv->cfg->bt_params->bt_sco_disable) | |
1834 | bt_cmd.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE; | |
1835 | ||
b6e116e8 WYG |
1836 | if (priv->bt_ch_announce) |
1837 | bt_cmd.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION; | |
1838 | IWL_DEBUG_INFO(priv, "BT coex flag: 0X%x\n", bt_cmd.flags); | |
1839 | } | |
1840 | if (priv->bt_full_concurrent) | |
1841 | memcpy(bt_cmd.bt3_lookup_table, iwlagn_concurrent_lookup, | |
1842 | sizeof(iwlagn_concurrent_lookup)); | |
1843 | else | |
1844 | memcpy(bt_cmd.bt3_lookup_table, iwlagn_def_3w_lookup, | |
1845 | sizeof(iwlagn_def_3w_lookup)); | |
1846 | ||
1847 | IWL_DEBUG_INFO(priv, "BT coex %s in %s mode\n", | |
1848 | bt_cmd.flags ? "active" : "disabled", | |
1849 | priv->bt_full_concurrent ? | |
1850 | "full concurrency" : "3-wire"); | |
1851 | ||
1852 | if (iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG, sizeof(bt_cmd), &bt_cmd)) | |
1853 | IWL_ERR(priv, "failed to send BT Coex Config\n"); | |
1854 | ||
1855 | /* | |
1856 | * When we are doing a restart, need to also reconfigure BT | |
1857 | * SCO to the device. If not doing a restart, bt_sco_active | |
1858 | * will always be false, so there's no need to have an extra | |
1859 | * variable to check for it. | |
1860 | */ | |
1861 | if (priv->bt_sco_active) { | |
1862 | struct iwlagn_bt_sco_cmd sco_cmd = { .flags = 0 }; | |
1863 | ||
1864 | if (priv->bt_sco_active) | |
1865 | sco_cmd.flags |= IWLAGN_BT_SCO_ACTIVE; | |
1866 | if (iwl_send_cmd_pdu(priv, REPLY_BT_COEX_SCO, | |
1867 | sizeof(sco_cmd), &sco_cmd)) | |
1868 | IWL_ERR(priv, "failed to send BT SCO command\n"); | |
1869 | } | |
1870 | } | |
1871 | ||
1872 | static void iwlagn_bt_traffic_change_work(struct work_struct *work) | |
1873 | { | |
1874 | struct iwl_priv *priv = | |
1875 | container_of(work, struct iwl_priv, bt_traffic_change_work); | |
8bd413e6 | 1876 | struct iwl_rxon_context *ctx; |
b6e116e8 WYG |
1877 | int smps_request = -1; |
1878 | ||
5eda74a4 SG |
1879 | /* |
1880 | * Note: bt_traffic_load can be overridden by scan complete and | |
1881 | * coex profile notifications. Ignore that since only bad consequence | |
1882 | * can be not matching debug print with actual state. | |
1883 | */ | |
b6e116e8 WYG |
1884 | IWL_DEBUG_INFO(priv, "BT traffic load changes: %d\n", |
1885 | priv->bt_traffic_load); | |
1886 | ||
1887 | switch (priv->bt_traffic_load) { | |
1888 | case IWL_BT_COEX_TRAFFIC_LOAD_NONE: | |
f5682c01 WYG |
1889 | if (priv->bt_status) |
1890 | smps_request = IEEE80211_SMPS_DYNAMIC; | |
1891 | else | |
1892 | smps_request = IEEE80211_SMPS_AUTOMATIC; | |
b6e116e8 WYG |
1893 | break; |
1894 | case IWL_BT_COEX_TRAFFIC_LOAD_LOW: | |
1895 | smps_request = IEEE80211_SMPS_DYNAMIC; | |
1896 | break; | |
1897 | case IWL_BT_COEX_TRAFFIC_LOAD_HIGH: | |
1898 | case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS: | |
1899 | smps_request = IEEE80211_SMPS_STATIC; | |
1900 | break; | |
1901 | default: | |
1902 | IWL_ERR(priv, "Invalid BT traffic load: %d\n", | |
1903 | priv->bt_traffic_load); | |
1904 | break; | |
1905 | } | |
1906 | ||
1907 | mutex_lock(&priv->mutex); | |
1908 | ||
5eda74a4 SG |
1909 | /* |
1910 | * We can not send command to firmware while scanning. When the scan | |
1911 | * complete we will schedule this work again. We do check with mutex | |
1912 | * locked to prevent new scan request to arrive. We do not check | |
1913 | * STATUS_SCANNING to avoid race when queue_work two times from | |
1914 | * different notifications, but quit and not perform any work at all. | |
1915 | */ | |
1916 | if (test_bit(STATUS_SCAN_HW, &priv->status)) | |
1917 | goto out; | |
1918 | ||
b6e116e8 WYG |
1919 | if (priv->cfg->ops->lib->update_chain_flags) |
1920 | priv->cfg->ops->lib->update_chain_flags(priv); | |
1921 | ||
8bd413e6 JB |
1922 | if (smps_request != -1) { |
1923 | for_each_context(priv, ctx) { | |
1924 | if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) | |
1925 | ieee80211_request_smps(ctx->vif, smps_request); | |
1926 | } | |
1927 | } | |
5eda74a4 | 1928 | out: |
b6e116e8 WYG |
1929 | mutex_unlock(&priv->mutex); |
1930 | } | |
1931 | ||
1932 | static void iwlagn_print_uartmsg(struct iwl_priv *priv, | |
1933 | struct iwl_bt_uart_msg *uart_msg) | |
1934 | { | |
1935 | IWL_DEBUG_NOTIF(priv, "Message Type = 0x%X, SSN = 0x%X, " | |
1936 | "Update Req = 0x%X", | |
1937 | (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >> | |
1938 | BT_UART_MSG_FRAME1MSGTYPE_POS, | |
1939 | (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >> | |
1940 | BT_UART_MSG_FRAME1SSN_POS, | |
1941 | (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >> | |
1942 | BT_UART_MSG_FRAME1UPDATEREQ_POS); | |
1943 | ||
1944 | IWL_DEBUG_NOTIF(priv, "Open connections = 0x%X, Traffic load = 0x%X, " | |
1945 | "Chl_SeqN = 0x%X, In band = 0x%X", | |
1946 | (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >> | |
1947 | BT_UART_MSG_FRAME2OPENCONNECTIONS_POS, | |
1948 | (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >> | |
1949 | BT_UART_MSG_FRAME2TRAFFICLOAD_POS, | |
1950 | (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >> | |
1951 | BT_UART_MSG_FRAME2CHLSEQN_POS, | |
1952 | (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >> | |
1953 | BT_UART_MSG_FRAME2INBAND_POS); | |
1954 | ||
1955 | IWL_DEBUG_NOTIF(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, " | |
1956 | "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X", | |
1957 | (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >> | |
1958 | BT_UART_MSG_FRAME3SCOESCO_POS, | |
1959 | (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >> | |
1960 | BT_UART_MSG_FRAME3SNIFF_POS, | |
1961 | (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >> | |
1962 | BT_UART_MSG_FRAME3A2DP_POS, | |
1963 | (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >> | |
1964 | BT_UART_MSG_FRAME3ACL_POS, | |
1965 | (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >> | |
1966 | BT_UART_MSG_FRAME3MASTER_POS, | |
1967 | (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >> | |
1968 | BT_UART_MSG_FRAME3OBEX_POS); | |
1969 | ||
1970 | IWL_DEBUG_NOTIF(priv, "Idle duration = 0x%X", | |
1971 | (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >> | |
1972 | BT_UART_MSG_FRAME4IDLEDURATION_POS); | |
1973 | ||
1974 | IWL_DEBUG_NOTIF(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, " | |
1975 | "eSCO Retransmissions = 0x%X", | |
1976 | (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >> | |
1977 | BT_UART_MSG_FRAME5TXACTIVITY_POS, | |
1978 | (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >> | |
1979 | BT_UART_MSG_FRAME5RXACTIVITY_POS, | |
1980 | (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >> | |
1981 | BT_UART_MSG_FRAME5ESCORETRANSMIT_POS); | |
1982 | ||
1983 | IWL_DEBUG_NOTIF(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X", | |
1984 | (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >> | |
1985 | BT_UART_MSG_FRAME6SNIFFINTERVAL_POS, | |
1986 | (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >> | |
1987 | BT_UART_MSG_FRAME6DISCOVERABLE_POS); | |
1988 | ||
1989 | IWL_DEBUG_NOTIF(priv, "Sniff Activity = 0x%X, Inquiry/Page SR Mode = " | |
1990 | "0x%X, Connectable = 0x%X", | |
1991 | (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >> | |
1992 | BT_UART_MSG_FRAME7SNIFFACTIVITY_POS, | |
1993 | (BT_UART_MSG_FRAME7INQUIRYPAGESRMODE_MSK & uart_msg->frame7) >> | |
1994 | BT_UART_MSG_FRAME7INQUIRYPAGESRMODE_POS, | |
1995 | (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >> | |
1996 | BT_UART_MSG_FRAME7CONNECTABLE_POS); | |
1997 | } | |
1998 | ||
1999 | static void iwlagn_set_kill_ack_msk(struct iwl_priv *priv, | |
2000 | struct iwl_bt_uart_msg *uart_msg) | |
2001 | { | |
2002 | u8 kill_ack_msk; | |
20407ed8 | 2003 | static const __le32 bt_kill_ack_msg[2] = { |
b6e116e8 WYG |
2004 | cpu_to_le32(0xFFFFFFF), cpu_to_le32(0xFFFFFC00) }; |
2005 | ||
2006 | kill_ack_msk = (((BT_UART_MSG_FRAME3A2DP_MSK | | |
2007 | BT_UART_MSG_FRAME3SNIFF_MSK | | |
2008 | BT_UART_MSG_FRAME3SCOESCO_MSK) & | |
2009 | uart_msg->frame3) == 0) ? 1 : 0; | |
2010 | if (priv->kill_ack_mask != bt_kill_ack_msg[kill_ack_msk]) { | |
2011 | priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK; | |
2012 | priv->kill_ack_mask = bt_kill_ack_msg[kill_ack_msk]; | |
2013 | /* schedule to send runtime bt_config */ | |
2014 | queue_work(priv->workqueue, &priv->bt_runtime_config); | |
2015 | } | |
2016 | ||
2017 | } | |
2018 | ||
2019 | void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv, | |
2020 | struct iwl_rx_mem_buffer *rxb) | |
2021 | { | |
2022 | unsigned long flags; | |
2023 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
2024 | struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif; | |
2025 | struct iwlagn_bt_sco_cmd sco_cmd = { .flags = 0 }; | |
2026 | struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg; | |
b6e116e8 WYG |
2027 | |
2028 | IWL_DEBUG_NOTIF(priv, "BT Coex notification:\n"); | |
2029 | IWL_DEBUG_NOTIF(priv, " status: %d\n", coex->bt_status); | |
2030 | IWL_DEBUG_NOTIF(priv, " traffic load: %d\n", coex->bt_traffic_load); | |
2031 | IWL_DEBUG_NOTIF(priv, " CI compliance: %d\n", | |
2032 | coex->bt_ci_compliance); | |
2033 | iwlagn_print_uartmsg(priv, uart_msg); | |
2034 | ||
66e863a5 | 2035 | priv->last_bt_traffic_load = priv->bt_traffic_load; |
b6e116e8 WYG |
2036 | if (priv->iw_mode != NL80211_IFTYPE_ADHOC) { |
2037 | if (priv->bt_status != coex->bt_status || | |
66e863a5 | 2038 | priv->last_bt_traffic_load != coex->bt_traffic_load) { |
b6e116e8 WYG |
2039 | if (coex->bt_status) { |
2040 | /* BT on */ | |
2041 | if (!priv->bt_ch_announce) | |
2042 | priv->bt_traffic_load = | |
2043 | IWL_BT_COEX_TRAFFIC_LOAD_HIGH; | |
2044 | else | |
2045 | priv->bt_traffic_load = | |
2046 | coex->bt_traffic_load; | |
2047 | } else { | |
2048 | /* BT off */ | |
2049 | priv->bt_traffic_load = | |
2050 | IWL_BT_COEX_TRAFFIC_LOAD_NONE; | |
2051 | } | |
2052 | priv->bt_status = coex->bt_status; | |
2053 | queue_work(priv->workqueue, | |
2054 | &priv->bt_traffic_change_work); | |
2055 | } | |
2056 | if (priv->bt_sco_active != | |
2057 | (uart_msg->frame3 & BT_UART_MSG_FRAME3SCOESCO_MSK)) { | |
2058 | priv->bt_sco_active = uart_msg->frame3 & | |
2059 | BT_UART_MSG_FRAME3SCOESCO_MSK; | |
2060 | if (priv->bt_sco_active) | |
2061 | sco_cmd.flags |= IWLAGN_BT_SCO_ACTIVE; | |
2062 | iwl_send_cmd_pdu_async(priv, REPLY_BT_COEX_SCO, | |
2063 | sizeof(sco_cmd), &sco_cmd, NULL); | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | iwlagn_set_kill_ack_msk(priv, uart_msg); | |
2068 | ||
2069 | /* FIXME: based on notification, adjust the prio_boost */ | |
2070 | ||
2071 | spin_lock_irqsave(&priv->lock, flags); | |
2072 | priv->bt_ci_compliance = coex->bt_ci_compliance; | |
2073 | spin_unlock_irqrestore(&priv->lock, flags); | |
2074 | } | |
2075 | ||
2076 | void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv) | |
2077 | { | |
2078 | iwlagn_rx_handler_setup(priv); | |
2079 | priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] = | |
2080 | iwlagn_bt_coex_profile_notif; | |
2081 | } | |
2082 | ||
2083 | void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv) | |
2084 | { | |
2085 | iwlagn_setup_deferred_work(priv); | |
2086 | ||
2087 | INIT_WORK(&priv->bt_traffic_change_work, | |
2088 | iwlagn_bt_traffic_change_work); | |
2089 | } | |
2090 | ||
2091 | void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv) | |
2092 | { | |
2093 | cancel_work_sync(&priv->bt_traffic_change_work); | |
2094 | } | |
5de33068 JB |
2095 | |
2096 | static bool is_single_rx_stream(struct iwl_priv *priv) | |
2097 | { | |
2098 | return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC || | |
2099 | priv->current_ht_config.single_chain_sufficient; | |
2100 | } | |
2101 | ||
2102 | #define IWL_NUM_RX_CHAINS_MULTIPLE 3 | |
2103 | #define IWL_NUM_RX_CHAINS_SINGLE 2 | |
2104 | #define IWL_NUM_IDLE_CHAINS_DUAL 2 | |
2105 | #define IWL_NUM_IDLE_CHAINS_SINGLE 1 | |
2106 | ||
2107 | /* | |
2108 | * Determine how many receiver/antenna chains to use. | |
2109 | * | |
2110 | * More provides better reception via diversity. Fewer saves power | |
2111 | * at the expense of throughput, but only when not in powersave to | |
2112 | * start with. | |
2113 | * | |
2114 | * MIMO (dual stream) requires at least 2, but works better with 3. | |
2115 | * This does not determine *which* chains to use, just how many. | |
2116 | */ | |
2117 | static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) | |
2118 | { | |
2119 | if (priv->cfg->bt_params && | |
2120 | priv->cfg->bt_params->advanced_bt_coexist && | |
2121 | (priv->bt_full_concurrent || | |
2122 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { | |
2123 | /* | |
2124 | * only use chain 'A' in bt high traffic load or | |
2125 | * full concurrency mode | |
2126 | */ | |
2127 | return IWL_NUM_RX_CHAINS_SINGLE; | |
2128 | } | |
2129 | /* # of Rx chains to use when expecting MIMO. */ | |
2130 | if (is_single_rx_stream(priv)) | |
2131 | return IWL_NUM_RX_CHAINS_SINGLE; | |
2132 | else | |
2133 | return IWL_NUM_RX_CHAINS_MULTIPLE; | |
2134 | } | |
2135 | ||
2136 | /* | |
2137 | * When we are in power saving mode, unless device support spatial | |
2138 | * multiplexing power save, use the active count for rx chain count. | |
2139 | */ | |
2140 | static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) | |
2141 | { | |
2142 | /* # Rx chains when idling, depending on SMPS mode */ | |
2143 | switch (priv->current_ht_config.smps) { | |
2144 | case IEEE80211_SMPS_STATIC: | |
2145 | case IEEE80211_SMPS_DYNAMIC: | |
2146 | return IWL_NUM_IDLE_CHAINS_SINGLE; | |
2147 | case IEEE80211_SMPS_OFF: | |
2148 | return active_cnt; | |
2149 | default: | |
2150 | WARN(1, "invalid SMPS mode %d", | |
2151 | priv->current_ht_config.smps); | |
2152 | return active_cnt; | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | /* up to 4 chains */ | |
2157 | static u8 iwl_count_chain_bitmap(u32 chain_bitmap) | |
2158 | { | |
2159 | u8 res; | |
2160 | res = (chain_bitmap & BIT(0)) >> 0; | |
2161 | res += (chain_bitmap & BIT(1)) >> 1; | |
2162 | res += (chain_bitmap & BIT(2)) >> 2; | |
2163 | res += (chain_bitmap & BIT(3)) >> 3; | |
2164 | return res; | |
2165 | } | |
2166 | ||
2167 | /** | |
2168 | * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image | |
2169 | * | |
2170 | * Selects how many and which Rx receivers/antennas/chains to use. | |
2171 | * This should not be used for scan command ... it puts data in wrong place. | |
2172 | */ | |
2173 | void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
2174 | { | |
2175 | bool is_single = is_single_rx_stream(priv); | |
2176 | bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); | |
2177 | u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt; | |
2178 | u32 active_chains; | |
2179 | u16 rx_chain; | |
2180 | ||
2181 | /* Tell uCode which antennas are actually connected. | |
2182 | * Before first association, we assume all antennas are connected. | |
2183 | * Just after first association, iwl_chain_noise_calibration() | |
2184 | * checks which antennas actually *are* connected. */ | |
2185 | if (priv->chain_noise_data.active_chains) | |
2186 | active_chains = priv->chain_noise_data.active_chains; | |
2187 | else | |
2188 | active_chains = priv->hw_params.valid_rx_ant; | |
2189 | ||
2190 | if (priv->cfg->bt_params && | |
2191 | priv->cfg->bt_params->advanced_bt_coexist && | |
2192 | (priv->bt_full_concurrent || | |
2193 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) { | |
2194 | /* | |
2195 | * only use chain 'A' in bt high traffic load or | |
2196 | * full concurrency mode | |
2197 | */ | |
2198 | active_chains = first_antenna(active_chains); | |
2199 | } | |
2200 | ||
2201 | rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS; | |
2202 | ||
2203 | /* How many receivers should we use? */ | |
2204 | active_rx_cnt = iwl_get_active_rx_chain_count(priv); | |
2205 | idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt); | |
2206 | ||
2207 | ||
2208 | /* correct rx chain count according hw settings | |
2209 | * and chain noise calibration | |
2210 | */ | |
2211 | valid_rx_cnt = iwl_count_chain_bitmap(active_chains); | |
2212 | if (valid_rx_cnt < active_rx_cnt) | |
2213 | active_rx_cnt = valid_rx_cnt; | |
2214 | ||
2215 | if (valid_rx_cnt < idle_rx_cnt) | |
2216 | idle_rx_cnt = valid_rx_cnt; | |
2217 | ||
2218 | rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS; | |
2219 | rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS; | |
2220 | ||
2221 | ctx->staging.rx_chain = cpu_to_le16(rx_chain); | |
2222 | ||
2223 | if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam) | |
2224 | ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
2225 | else | |
2226 | ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK; | |
2227 | ||
2228 | IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n", | |
2229 | ctx->staging.rx_chain, | |
2230 | active_rx_cnt, idle_rx_cnt); | |
2231 | ||
2232 | WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 || | |
2233 | active_rx_cnt < idle_rx_cnt); | |
2234 | } | |
facd982e JB |
2235 | |
2236 | u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid) | |
2237 | { | |
2238 | int i; | |
2239 | u8 ind = ant; | |
2240 | ||
2241 | if (priv->band == IEEE80211_BAND_2GHZ && | |
2242 | priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH) | |
2243 | return 0; | |
2244 | ||
2245 | for (i = 0; i < RATE_ANT_NUM - 1; i++) { | |
2246 | ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0; | |
2247 | if (valid & BIT(ind)) | |
2248 | return ind; | |
2249 | } | |
2250 | return ant; | |
2251 | } | |
fed73292 JB |
2252 | |
2253 | static const char *get_csr_string(int cmd) | |
2254 | { | |
2255 | switch (cmd) { | |
2256 | IWL_CMD(CSR_HW_IF_CONFIG_REG); | |
2257 | IWL_CMD(CSR_INT_COALESCING); | |
2258 | IWL_CMD(CSR_INT); | |
2259 | IWL_CMD(CSR_INT_MASK); | |
2260 | IWL_CMD(CSR_FH_INT_STATUS); | |
2261 | IWL_CMD(CSR_GPIO_IN); | |
2262 | IWL_CMD(CSR_RESET); | |
2263 | IWL_CMD(CSR_GP_CNTRL); | |
2264 | IWL_CMD(CSR_HW_REV); | |
2265 | IWL_CMD(CSR_EEPROM_REG); | |
2266 | IWL_CMD(CSR_EEPROM_GP); | |
2267 | IWL_CMD(CSR_OTP_GP_REG); | |
2268 | IWL_CMD(CSR_GIO_REG); | |
2269 | IWL_CMD(CSR_GP_UCODE_REG); | |
2270 | IWL_CMD(CSR_GP_DRIVER_REG); | |
2271 | IWL_CMD(CSR_UCODE_DRV_GP1); | |
2272 | IWL_CMD(CSR_UCODE_DRV_GP2); | |
2273 | IWL_CMD(CSR_LED_REG); | |
2274 | IWL_CMD(CSR_DRAM_INT_TBL_REG); | |
2275 | IWL_CMD(CSR_GIO_CHICKEN_BITS); | |
2276 | IWL_CMD(CSR_ANA_PLL_CFG); | |
2277 | IWL_CMD(CSR_HW_REV_WA_REG); | |
2278 | IWL_CMD(CSR_DBG_HPET_MEM_REG); | |
2279 | default: | |
2280 | return "UNKNOWN"; | |
2281 | } | |
2282 | } | |
2283 | ||
2284 | void iwl_dump_csr(struct iwl_priv *priv) | |
2285 | { | |
2286 | int i; | |
20407ed8 | 2287 | static const u32 csr_tbl[] = { |
fed73292 JB |
2288 | CSR_HW_IF_CONFIG_REG, |
2289 | CSR_INT_COALESCING, | |
2290 | CSR_INT, | |
2291 | CSR_INT_MASK, | |
2292 | CSR_FH_INT_STATUS, | |
2293 | CSR_GPIO_IN, | |
2294 | CSR_RESET, | |
2295 | CSR_GP_CNTRL, | |
2296 | CSR_HW_REV, | |
2297 | CSR_EEPROM_REG, | |
2298 | CSR_EEPROM_GP, | |
2299 | CSR_OTP_GP_REG, | |
2300 | CSR_GIO_REG, | |
2301 | CSR_GP_UCODE_REG, | |
2302 | CSR_GP_DRIVER_REG, | |
2303 | CSR_UCODE_DRV_GP1, | |
2304 | CSR_UCODE_DRV_GP2, | |
2305 | CSR_LED_REG, | |
2306 | CSR_DRAM_INT_TBL_REG, | |
2307 | CSR_GIO_CHICKEN_BITS, | |
2308 | CSR_ANA_PLL_CFG, | |
2309 | CSR_HW_REV_WA_REG, | |
2310 | CSR_DBG_HPET_MEM_REG | |
2311 | }; | |
2312 | IWL_ERR(priv, "CSR values:\n"); | |
2313 | IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is " | |
2314 | "CSR_INT_PERIODIC_REG)\n"); | |
2315 | for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) { | |
2316 | IWL_ERR(priv, " %25s: 0X%08x\n", | |
2317 | get_csr_string(csr_tbl[i]), | |
2318 | iwl_read32(priv, csr_tbl[i])); | |
2319 | } | |
2320 | } | |
84fac3d9 JB |
2321 | |
2322 | static const char *get_fh_string(int cmd) | |
2323 | { | |
2324 | switch (cmd) { | |
2325 | IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG); | |
2326 | IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG); | |
2327 | IWL_CMD(FH_RSCSR_CHNL0_WPTR); | |
2328 | IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG); | |
2329 | IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG); | |
2330 | IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG); | |
2331 | IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV); | |
2332 | IWL_CMD(FH_TSSR_TX_STATUS_REG); | |
2333 | IWL_CMD(FH_TSSR_TX_ERROR_REG); | |
2334 | default: | |
2335 | return "UNKNOWN"; | |
2336 | } | |
2337 | } | |
2338 | ||
2339 | int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display) | |
2340 | { | |
2341 | int i; | |
2342 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2343 | int pos = 0; | |
2344 | size_t bufsz = 0; | |
2345 | #endif | |
20407ed8 | 2346 | static const u32 fh_tbl[] = { |
84fac3d9 JB |
2347 | FH_RSCSR_CHNL0_STTS_WPTR_REG, |
2348 | FH_RSCSR_CHNL0_RBDCB_BASE_REG, | |
2349 | FH_RSCSR_CHNL0_WPTR, | |
2350 | FH_MEM_RCSR_CHNL0_CONFIG_REG, | |
2351 | FH_MEM_RSSR_SHARED_CTRL_REG, | |
2352 | FH_MEM_RSSR_RX_STATUS_REG, | |
2353 | FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV, | |
2354 | FH_TSSR_TX_STATUS_REG, | |
2355 | FH_TSSR_TX_ERROR_REG | |
2356 | }; | |
2357 | #ifdef CONFIG_IWLWIFI_DEBUG | |
2358 | if (display) { | |
2359 | bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40; | |
2360 | *buf = kmalloc(bufsz, GFP_KERNEL); | |
2361 | if (!*buf) | |
2362 | return -ENOMEM; | |
2363 | pos += scnprintf(*buf + pos, bufsz - pos, | |
2364 | "FH register values:\n"); | |
2365 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { | |
2366 | pos += scnprintf(*buf + pos, bufsz - pos, | |
2367 | " %34s: 0X%08x\n", | |
2368 | get_fh_string(fh_tbl[i]), | |
2369 | iwl_read_direct32(priv, fh_tbl[i])); | |
2370 | } | |
2371 | return pos; | |
2372 | } | |
2373 | #endif | |
2374 | IWL_ERR(priv, "FH register values:\n"); | |
2375 | for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) { | |
2376 | IWL_ERR(priv, " %34s: 0X%08x\n", | |
2377 | get_fh_string(fh_tbl[i]), | |
2378 | iwl_read_direct32(priv, fh_tbl[i])); | |
2379 | } | |
2380 | return 0; | |
2381 | } |