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iwlagn: remove un-necessary "_agn"
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn-lib.c
blobe77f91380a4ad346364b8677240d660ac5a76604
1 /******************************************************************************
2 *
3 * GPL LICENSE SUMMARY
4 *
5 * Copyright(c) 2008 - 2011 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 *****************************************************************************/
29 #include <linux/etherdevice.h>
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"
41 #include "iwl-sta.h"
42 #include "iwl-trans.h"
43
44 static inline u32 iwlagn_get_scd_ssn(struct iwlagn_tx_resp *tx_resp)
45 {
46 return le32_to_cpup((__le32 *)&tx_resp->status +
47 tx_resp->frame_count) & MAX_SN;
48 }
49
50 static void iwlagn_count_tx_err_status(struct iwl_priv *priv, u16 status)
51 {
52 status &= TX_STATUS_MSK;
53
54 switch (status) {
55 case TX_STATUS_POSTPONE_DELAY:
56 priv->reply_tx_stats.pp_delay++;
57 break;
58 case TX_STATUS_POSTPONE_FEW_BYTES:
59 priv->reply_tx_stats.pp_few_bytes++;
60 break;
61 case TX_STATUS_POSTPONE_BT_PRIO:
62 priv->reply_tx_stats.pp_bt_prio++;
63 break;
64 case TX_STATUS_POSTPONE_QUIET_PERIOD:
65 priv->reply_tx_stats.pp_quiet_period++;
66 break;
67 case TX_STATUS_POSTPONE_CALC_TTAK:
68 priv->reply_tx_stats.pp_calc_ttak++;
69 break;
70 case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY:
71 priv->reply_tx_stats.int_crossed_retry++;
72 break;
73 case TX_STATUS_FAIL_SHORT_LIMIT:
74 priv->reply_tx_stats.short_limit++;
75 break;
76 case TX_STATUS_FAIL_LONG_LIMIT:
77 priv->reply_tx_stats.long_limit++;
78 break;
79 case TX_STATUS_FAIL_FIFO_UNDERRUN:
80 priv->reply_tx_stats.fifo_underrun++;
81 break;
82 case TX_STATUS_FAIL_DRAIN_FLOW:
83 priv->reply_tx_stats.drain_flow++;
84 break;
85 case TX_STATUS_FAIL_RFKILL_FLUSH:
86 priv->reply_tx_stats.rfkill_flush++;
87 break;
88 case TX_STATUS_FAIL_LIFE_EXPIRE:
89 priv->reply_tx_stats.life_expire++;
90 break;
91 case TX_STATUS_FAIL_DEST_PS:
92 priv->reply_tx_stats.dest_ps++;
93 break;
94 case TX_STATUS_FAIL_HOST_ABORTED:
95 priv->reply_tx_stats.host_abort++;
96 break;
97 case TX_STATUS_FAIL_BT_RETRY:
98 priv->reply_tx_stats.bt_retry++;
99 break;
100 case TX_STATUS_FAIL_STA_INVALID:
101 priv->reply_tx_stats.sta_invalid++;
102 break;
103 case TX_STATUS_FAIL_FRAG_DROPPED:
104 priv->reply_tx_stats.frag_drop++;
105 break;
106 case TX_STATUS_FAIL_TID_DISABLE:
107 priv->reply_tx_stats.tid_disable++;
108 break;
109 case TX_STATUS_FAIL_FIFO_FLUSHED:
110 priv->reply_tx_stats.fifo_flush++;
111 break;
112 case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL:
113 priv->reply_tx_stats.insuff_cf_poll++;
114 break;
115 case TX_STATUS_FAIL_PASSIVE_NO_RX:
116 priv->reply_tx_stats.fail_hw_drop++;
117 break;
118 case TX_STATUS_FAIL_NO_BEACON_ON_RADAR:
119 priv->reply_tx_stats.sta_color_mismatch++;
120 break;
121 default:
122 priv->reply_tx_stats.unknown++;
123 break;
124 }
125 }
126
127 static void iwlagn_count_agg_tx_err_status(struct iwl_priv *priv, u16 status)
128 {
129 status &= AGG_TX_STATUS_MSK;
130
131 switch (status) {
132 case AGG_TX_STATE_UNDERRUN_MSK:
133 priv->reply_agg_tx_stats.underrun++;
134 break;
135 case AGG_TX_STATE_BT_PRIO_MSK:
136 priv->reply_agg_tx_stats.bt_prio++;
137 break;
138 case AGG_TX_STATE_FEW_BYTES_MSK:
139 priv->reply_agg_tx_stats.few_bytes++;
140 break;
141 case AGG_TX_STATE_ABORT_MSK:
142 priv->reply_agg_tx_stats.abort++;
143 break;
144 case AGG_TX_STATE_LAST_SENT_TTL_MSK:
145 priv->reply_agg_tx_stats.last_sent_ttl++;
146 break;
147 case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK:
148 priv->reply_agg_tx_stats.last_sent_try++;
149 break;
150 case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK:
151 priv->reply_agg_tx_stats.last_sent_bt_kill++;
152 break;
153 case AGG_TX_STATE_SCD_QUERY_MSK:
154 priv->reply_agg_tx_stats.scd_query++;
155 break;
156 case AGG_TX_STATE_TEST_BAD_CRC32_MSK:
157 priv->reply_agg_tx_stats.bad_crc32++;
158 break;
159 case AGG_TX_STATE_RESPONSE_MSK:
160 priv->reply_agg_tx_stats.response++;
161 break;
162 case AGG_TX_STATE_DUMP_TX_MSK:
163 priv->reply_agg_tx_stats.dump_tx++;
164 break;
165 case AGG_TX_STATE_DELAY_TX_MSK:
166 priv->reply_agg_tx_stats.delay_tx++;
167 break;
168 default:
169 priv->reply_agg_tx_stats.unknown++;
170 break;
171 }
172 }
173
174 static void iwlagn_set_tx_status(struct iwl_priv *priv,
175 struct ieee80211_tx_info *info,
176 struct iwl_rxon_context *ctx,
177 struct iwlagn_tx_resp *tx_resp,
178 int txq_id, bool is_agg)
179 {
180 u16 status = le16_to_cpu(tx_resp->status.status);
181
182 info->status.rates[0].count = tx_resp->failure_frame + 1;
183 if (is_agg)
184 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
185 info->flags |= iwl_tx_status_to_mac80211(status);
186 iwlagn_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
187 info);
188 if (!iwl_is_tx_success(status))
189 iwlagn_count_tx_err_status(priv, status);
190
191 if (status == TX_STATUS_FAIL_PASSIVE_NO_RX &&
192 iwl_is_associated_ctx(ctx) && ctx->vif &&
193 ctx->vif->type == NL80211_IFTYPE_STATION) {
194 ctx->last_tx_rejected = true;
195 iwl_stop_queue(priv, &priv->txq[txq_id]);
196 }
197
198 IWL_DEBUG_TX_REPLY(priv, "TXQ %d status %s (0x%08x) rate_n_flags "
199 "0x%x retries %d\n",
200 txq_id,
201 iwl_get_tx_fail_reason(status), status,
202 le32_to_cpu(tx_resp->rate_n_flags),
203 tx_resp->failure_frame);
204 }
205
206 #ifdef CONFIG_IWLWIFI_DEBUG
207 #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x
208
209 const char *iwl_get_agg_tx_fail_reason(u16 status)
210 {
211 status &= AGG_TX_STATUS_MSK;
212 switch (status) {
213 case AGG_TX_STATE_TRANSMITTED:
214 return "SUCCESS";
215 AGG_TX_STATE_FAIL(UNDERRUN_MSK);
216 AGG_TX_STATE_FAIL(BT_PRIO_MSK);
217 AGG_TX_STATE_FAIL(FEW_BYTES_MSK);
218 AGG_TX_STATE_FAIL(ABORT_MSK);
219 AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK);
220 AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK);
221 AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK);
222 AGG_TX_STATE_FAIL(SCD_QUERY_MSK);
223 AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK);
224 AGG_TX_STATE_FAIL(RESPONSE_MSK);
225 AGG_TX_STATE_FAIL(DUMP_TX_MSK);
226 AGG_TX_STATE_FAIL(DELAY_TX_MSK);
227 }
228
229 return "UNKNOWN";
230 }
231 #endif /* CONFIG_IWLWIFI_DEBUG */
232
233 static int iwlagn_tx_status_reply_tx(struct iwl_priv *priv,
234 struct iwl_ht_agg *agg,
235 struct iwlagn_tx_resp *tx_resp,
236 int txq_id, u16 start_idx)
237 {
238 u16 status;
239 struct agg_tx_status *frame_status = &tx_resp->status;
240 struct ieee80211_hdr *hdr = NULL;
241 int i, sh, idx;
242 u16 seq;
243
244 if (agg->wait_for_ba)
245 IWL_DEBUG_TX_REPLY(priv, "got tx response w/o block-ack\n");
246
247 agg->frame_count = tx_resp->frame_count;
248 agg->start_idx = start_idx;
249 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
250 agg->bitmap = 0;
251
252 /* # frames attempted by Tx command */
253 if (agg->frame_count == 1) {
254 struct iwl_tx_info *txb;
255
256 /* Only one frame was attempted; no block-ack will arrive */
257 idx = start_idx;
258
259 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, StartIdx=%d idx=%d\n",
260 agg->frame_count, agg->start_idx, idx);
261 txb = &priv->txq[txq_id].txb[idx];
262 iwlagn_set_tx_status(priv, IEEE80211_SKB_CB(txb->skb),
263 txb->ctx, tx_resp, txq_id, true);
264 agg->wait_for_ba = 0;
265 } else {
266 /* Two or more frames were attempted; expect block-ack */
267 u64 bitmap = 0;
268
269 /*
270 * Start is the lowest frame sent. It may not be the first
271 * frame in the batch; we figure this out dynamically during
272 * the following loop.
273 */
274 int start = agg->start_idx;
275
276 /* Construct bit-map of pending frames within Tx window */
277 for (i = 0; i < agg->frame_count; i++) {
278 u16 sc;
279 status = le16_to_cpu(frame_status[i].status);
280 seq = le16_to_cpu(frame_status[i].sequence);
281 idx = SEQ_TO_INDEX(seq);
282 txq_id = SEQ_TO_QUEUE(seq);
283
284 if (status & AGG_TX_STATUS_MSK)
285 iwlagn_count_agg_tx_err_status(priv, status);
286
287 if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
288 AGG_TX_STATE_ABORT_MSK))
289 continue;
290
291 IWL_DEBUG_TX_REPLY(priv, "FrameCnt = %d, txq_id=%d idx=%d\n",
292 agg->frame_count, txq_id, idx);
293 IWL_DEBUG_TX_REPLY(priv, "status %s (0x%08x), "
294 "try-count (0x%08x)\n",
295 iwl_get_agg_tx_fail_reason(status),
296 status & AGG_TX_STATUS_MSK,
297 status & AGG_TX_TRY_MSK);
298
299 hdr = iwl_tx_queue_get_hdr(priv, txq_id, idx);
300 if (!hdr) {
301 IWL_ERR(priv,
302 "BUG_ON idx doesn't point to valid skb"
303 " idx=%d, txq_id=%d\n", idx, txq_id);
304 return -1;
305 }
306
307 sc = le16_to_cpu(hdr->seq_ctrl);
308 if (idx != (SEQ_TO_SN(sc) & 0xff)) {
309 IWL_ERR(priv,
310 "BUG_ON idx doesn't match seq control"
311 " idx=%d, seq_idx=%d, seq=%d\n",
312 idx, SEQ_TO_SN(sc),
313 hdr->seq_ctrl);
314 return -1;
315 }
316
317 IWL_DEBUG_TX_REPLY(priv, "AGG Frame i=%d idx %d seq=%d\n",
318 i, idx, SEQ_TO_SN(sc));
319
320 /*
321 * sh -> how many frames ahead of the starting frame is
322 * the current one?
323 *
324 * Note that all frames sent in the batch must be in a
325 * 64-frame window, so this number should be in [0,63].
326 * If outside of this window, then we've found a new
327 * "first" frame in the batch and need to change start.
328 */
329 sh = idx - start;
330
331 /*
332 * If >= 64, out of window. start must be at the front
333 * of the circular buffer, idx must be near the end of
334 * the buffer, and idx is the new "first" frame. Shift
335 * the indices around.
336 */
337 if (sh >= 64) {
338 /* Shift bitmap by start - idx, wrapped */
339 sh = 0x100 - idx + start;
340 bitmap = bitmap << sh;
341 /* Now idx is the new start so sh = 0 */
342 sh = 0;
343 start = idx;
344 /*
345 * If <= -64 then wraps the 256-pkt circular buffer
346 * (e.g., start = 255 and idx = 0, sh should be 1)
347 */
348 } else if (sh <= -64) {
349 sh = 0x100 - start + idx;
350 /*
351 * If < 0 but > -64, out of window. idx is before start
352 * but not wrapped. Shift the indices around.
353 */
354 } else if (sh < 0) {
355 /* Shift by how far start is ahead of idx */
356 sh = start - idx;
357 bitmap = bitmap << sh;
358 /* Now idx is the new start so sh = 0 */
359 start = idx;
360 sh = 0;
361 }
362 /* Sequence number start + sh was sent in this batch */
363 bitmap |= 1ULL << sh;
364 IWL_DEBUG_TX_REPLY(priv, "start=%d bitmap=0x%llx\n",
365 start, (unsigned long long)bitmap);
366 }
367
368 /*
369 * Store the bitmap and possibly the new start, if we wrapped
370 * the buffer above
371 */
372 agg->bitmap = bitmap;
373 agg->start_idx = start;
374 IWL_DEBUG_TX_REPLY(priv, "Frames %d start_idx=%d bitmap=0x%llx\n",
375 agg->frame_count, agg->start_idx,
376 (unsigned long long)agg->bitmap);
377
378 if (bitmap)
379 agg->wait_for_ba = 1;
380 }
381 return 0;
382 }
383
384 void iwl_check_abort_status(struct iwl_priv *priv,
385 u8 frame_count, u32 status)
386 {
387 if (frame_count == 1 && status == TX_STATUS_FAIL_RFKILL_FLUSH) {
388 IWL_ERR(priv, "Tx flush command to flush out all frames\n");
389 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
390 queue_work(priv->workqueue, &priv->tx_flush);
391 }
392 }
393
394 void iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
395 {
396 struct iwl_rx_packet *pkt = rxb_addr(rxb);
397 u16 sequence = le16_to_cpu(pkt->hdr.sequence);
398 int txq_id = SEQ_TO_QUEUE(sequence);
399 int index = SEQ_TO_INDEX(sequence);
400 struct iwl_tx_queue *txq = &priv->txq[txq_id];
401 struct ieee80211_tx_info *info;
402 struct iwlagn_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
403 struct iwl_tx_info *txb;
404 u32 status = le16_to_cpu(tx_resp->status.status);
405 int tid;
406 int sta_id;
407 int freed;
408 unsigned long flags;
409
410 if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
411 IWL_ERR(priv, "%s: Read index for DMA queue txq_id (%d) "
412 "index %d is out of range [0-%d] %d %d\n", __func__,
413 txq_id, index, txq->q.n_bd, txq->q.write_ptr,
414 txq->q.read_ptr);
415 return;
416 }
417
418 txq->time_stamp = jiffies;
419 txb = &txq->txb[txq->q.read_ptr];
420 info = IEEE80211_SKB_CB(txb->skb);
421 memset(&info->status, 0, sizeof(info->status));
422
423 tid = (tx_resp->ra_tid & IWLAGN_TX_RES_TID_MSK) >>
424 IWLAGN_TX_RES_TID_POS;
425 sta_id = (tx_resp->ra_tid & IWLAGN_TX_RES_RA_MSK) >>
426 IWLAGN_TX_RES_RA_POS;
427
428 spin_lock_irqsave(&priv->sta_lock, flags);
429 if (txq->sched_retry) {
430 const u32 scd_ssn = iwlagn_get_scd_ssn(tx_resp);
431 struct iwl_ht_agg *agg;
432
433 agg = &priv->stations[sta_id].tid[tid].agg;
434 /*
435 * If the BT kill count is non-zero, we'll get this
436 * notification again.
437 */
438 if (tx_resp->bt_kill_count && tx_resp->frame_count == 1 &&
439 priv->cfg->bt_params &&
440 priv->cfg->bt_params->advanced_bt_coexist) {
441 IWL_DEBUG_COEX(priv, "receive reply tx with bt_kill\n");
442 }
443 iwlagn_tx_status_reply_tx(priv, agg, tx_resp, txq_id, index);
444
445 /* check if BAR is needed */
446 if ((tx_resp->frame_count == 1) && !iwl_is_tx_success(status))
447 info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
448
449 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
450 index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
451 IWL_DEBUG_TX_REPLY(priv, "Retry scheduler reclaim "
452 "scd_ssn=%d idx=%d txq=%d swq=%d\n",
453 scd_ssn , index, txq_id, txq->swq_id);
454
455 freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
456 iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
457
458 if (priv->mac80211_registered &&
459 (iwl_queue_space(&txq->q) > txq->q.low_mark) &&
460 (agg->state != IWL_EMPTYING_HW_QUEUE_DELBA))
461 iwl_wake_queue(priv, txq);
462 }
463 } else {
464 iwlagn_set_tx_status(priv, info, txb->ctx, tx_resp,
465 txq_id, false);
466 freed = iwlagn_tx_queue_reclaim(priv, txq_id, index);
467 iwl_free_tfds_in_queue(priv, sta_id, tid, freed);
468
469 if (priv->mac80211_registered &&
470 iwl_queue_space(&txq->q) > txq->q.low_mark &&
471 status != TX_STATUS_FAIL_PASSIVE_NO_RX)
472 iwl_wake_queue(priv, txq);
473 }
474
475 iwlagn_txq_check_empty(priv, sta_id, tid, txq_id);
476
477 iwl_check_abort_status(priv, tx_resp->frame_count, status);
478 spin_unlock_irqrestore(&priv->sta_lock, flags);
479 }
480
481 int iwlagn_hw_valid_rtc_data_addr(u32 addr)
482 {
483 return (addr >= IWLAGN_RTC_DATA_LOWER_BOUND) &&
484 (addr < IWLAGN_RTC_DATA_UPPER_BOUND);
485 }
486
487 int iwlagn_send_tx_power(struct iwl_priv *priv)
488 {
489 struct iwlagn_tx_power_dbm_cmd tx_power_cmd;
490 u8 tx_ant_cfg_cmd;
491
492 if (WARN_ONCE(test_bit(STATUS_SCAN_HW, &priv->status),
493 "TX Power requested while scanning!\n"))
494 return -EAGAIN;
495
496 /* half dBm need to multiply */
497 tx_power_cmd.global_lmt = (s8)(2 * priv->tx_power_user_lmt);
498
499 if (priv->tx_power_lmt_in_half_dbm &&
500 priv->tx_power_lmt_in_half_dbm < tx_power_cmd.global_lmt) {
501 /*
502 * For the newer devices which using enhanced/extend tx power
503 * table in EEPROM, the format is in half dBm. driver need to
504 * convert to dBm format before report to mac80211.
505 * By doing so, there is a possibility of 1/2 dBm resolution
506 * lost. driver will perform "round-up" operation before
507 * reporting, but it will cause 1/2 dBm tx power over the
508 * regulatory limit. Perform the checking here, if the
509 * "tx_power_user_lmt" is higher than EEPROM value (in
510 * half-dBm format), lower the tx power based on EEPROM
511 */
512 tx_power_cmd.global_lmt = priv->tx_power_lmt_in_half_dbm;
513 }
514 tx_power_cmd.flags = IWLAGN_TX_POWER_NO_CLOSED;
515 tx_power_cmd.srv_chan_lmt = IWLAGN_TX_POWER_AUTO;
516
517 if (IWL_UCODE_API(priv->ucode_ver) == 1)
518 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD_V1;
519 else
520 tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
521
522 return trans_send_cmd_pdu(&priv->trans, tx_ant_cfg_cmd, CMD_SYNC,
523 sizeof(tx_power_cmd), &tx_power_cmd);
524 }
525
526 void iwlagn_temperature(struct iwl_priv *priv)
527 {
528 /* store temperature from correct statistics (in Celsius) */
529 priv->temperature = le32_to_cpu(priv->statistics.common.temperature);
530 iwl_tt_handler(priv);
531 }
532
533 u16 iwlagn_eeprom_calib_version(struct iwl_priv *priv)
534 {
535 struct iwl_eeprom_calib_hdr {
536 u8 version;
537 u8 pa_type;
538 u16 voltage;
539 } *hdr;
540
541 hdr = (struct iwl_eeprom_calib_hdr *)iwl_eeprom_query_addr(priv,
542 EEPROM_CALIB_ALL);
543 return hdr->version;
544
545 }
546
547 /*
548 * EEPROM
549 */
550 static u32 eeprom_indirect_address(const struct iwl_priv *priv, u32 address)
551 {
552 u16 offset = 0;
553
554 if ((address & INDIRECT_ADDRESS) == 0)
555 return address;
556
557 switch (address & INDIRECT_TYPE_MSK) {
558 case INDIRECT_HOST:
559 offset = iwl_eeprom_query16(priv, EEPROM_LINK_HOST);
560 break;
561 case INDIRECT_GENERAL:
562 offset = iwl_eeprom_query16(priv, EEPROM_LINK_GENERAL);
563 break;
564 case INDIRECT_REGULATORY:
565 offset = iwl_eeprom_query16(priv, EEPROM_LINK_REGULATORY);
566 break;
567 case INDIRECT_TXP_LIMIT:
568 offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT);
569 break;
570 case INDIRECT_TXP_LIMIT_SIZE:
571 offset = iwl_eeprom_query16(priv, EEPROM_LINK_TXP_LIMIT_SIZE);
572 break;
573 case INDIRECT_CALIBRATION:
574 offset = iwl_eeprom_query16(priv, EEPROM_LINK_CALIBRATION);
575 break;
576 case INDIRECT_PROCESS_ADJST:
577 offset = iwl_eeprom_query16(priv, EEPROM_LINK_PROCESS_ADJST);
578 break;
579 case INDIRECT_OTHERS:
580 offset = iwl_eeprom_query16(priv, EEPROM_LINK_OTHERS);
581 break;
582 default:
583 IWL_ERR(priv, "illegal indirect type: 0x%X\n",
584 address & INDIRECT_TYPE_MSK);
585 break;
586 }
587
588 /* translate the offset from words to byte */
589 return (address & ADDRESS_MSK) + (offset << 1);
590 }
591
592 const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset)
593 {
594 u32 address = eeprom_indirect_address(priv, offset);
595 BUG_ON(address >= priv->cfg->base_params->eeprom_size);
596 return &priv->eeprom[address];
597 }
598
599 struct iwl_mod_params iwlagn_mod_params = {
600 .amsdu_size_8K = 1,
601 .restart_fw = 1,
602 .plcp_check = true,
603 .bt_coex_active = true,
604 .no_sleep_autoadjust = true,
605 .power_level = IWL_POWER_INDEX_1,
606 /* the rest are 0 by default */
607 };
608
609 int iwlagn_hwrate_to_mac80211_idx(u32 rate_n_flags, enum ieee80211_band band)
610 {
611 int idx = 0;
612 int band_offset = 0;
613
614 /* HT rate format: mac80211 wants an MCS number, which is just LSB */
615 if (rate_n_flags & RATE_MCS_HT_MSK) {
616 idx = (rate_n_flags & 0xff);
617 return idx;
618 /* Legacy rate format, search for match in table */
619 } else {
620 if (band == IEEE80211_BAND_5GHZ)
621 band_offset = IWL_FIRST_OFDM_RATE;
622 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
623 if (iwl_rates[idx].plcp == (rate_n_flags & 0xFF))
624 return idx - band_offset;
625 }
626
627 return -1;
628 }
629
630 static int iwl_get_single_channel_for_scan(struct iwl_priv *priv,
631 struct ieee80211_vif *vif,
632 enum ieee80211_band band,
633 struct iwl_scan_channel *scan_ch)
634 {
635 const struct ieee80211_supported_band *sband;
636 u16 passive_dwell = 0;
637 u16 active_dwell = 0;
638 int added = 0;
639 u16 channel = 0;
640
641 sband = iwl_get_hw_mode(priv, band);
642 if (!sband) {
643 IWL_ERR(priv, "invalid band\n");
644 return added;
645 }
646
647 active_dwell = iwl_get_active_dwell_time(priv, band, 0);
648 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
649
650 if (passive_dwell <= active_dwell)
651 passive_dwell = active_dwell + 1;
652
653 channel = iwl_get_single_channel_number(priv, band);
654 if (channel) {
655 scan_ch->channel = cpu_to_le16(channel);
656 scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
657 scan_ch->active_dwell = cpu_to_le16(active_dwell);
658 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
659 /* Set txpower levels to defaults */
660 scan_ch->dsp_atten = 110;
661 if (band == IEEE80211_BAND_5GHZ)
662 scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
663 else
664 scan_ch->tx_gain = ((1 << 5) | (5 << 3));
665 added++;
666 } else
667 IWL_ERR(priv, "no valid channel found\n");
668 return added;
669 }
670
671 static int iwl_get_channels_for_scan(struct iwl_priv *priv,
672 struct ieee80211_vif *vif,
673 enum ieee80211_band band,
674 u8 is_active, u8 n_probes,
675 struct iwl_scan_channel *scan_ch)
676 {
677 struct ieee80211_channel *chan;
678 const struct ieee80211_supported_band *sband;
679 const struct iwl_channel_info *ch_info;
680 u16 passive_dwell = 0;
681 u16 active_dwell = 0;
682 int added, i;
683 u16 channel;
684
685 sband = iwl_get_hw_mode(priv, band);
686 if (!sband)
687 return 0;
688
689 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
690 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
691
692 if (passive_dwell <= active_dwell)
693 passive_dwell = active_dwell + 1;
694
695 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
696 chan = priv->scan_request->channels[i];
697
698 if (chan->band != band)
699 continue;
700
701 channel = chan->hw_value;
702 scan_ch->channel = cpu_to_le16(channel);
703
704 ch_info = iwl_get_channel_info(priv, band, channel);
705 if (!is_channel_valid(ch_info)) {
706 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
707 channel);
708 continue;
709 }
710
711 if (!is_active || is_channel_passive(ch_info) ||
712 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN))
713 scan_ch->type = SCAN_CHANNEL_TYPE_PASSIVE;
714 else
715 scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
716
717 if (n_probes)
718 scan_ch->type |= IWL_SCAN_PROBE_MASK(n_probes);
719
720 scan_ch->active_dwell = cpu_to_le16(active_dwell);
721 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
722
723 /* Set txpower levels to defaults */
724 scan_ch->dsp_atten = 110;
725
726 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
727 * power level:
728 * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
729 */
730 if (band == IEEE80211_BAND_5GHZ)
731 scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
732 else
733 scan_ch->tx_gain = ((1 << 5) | (5 << 3));
734
735 IWL_DEBUG_SCAN(priv, "Scanning ch=%d prob=0x%X [%s %d]\n",
736 channel, le32_to_cpu(scan_ch->type),
737 (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
738 "ACTIVE" : "PASSIVE",
739 (scan_ch->type & SCAN_CHANNEL_TYPE_ACTIVE) ?
740 active_dwell : passive_dwell);
741
742 scan_ch++;
743 added++;
744 }
745
746 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
747 return added;
748 }
749
750 static int iwl_fill_offch_tx(struct iwl_priv *priv, void *data, size_t maxlen)
751 {
752 struct sk_buff *skb = priv->offchan_tx_skb;
753
754 if (skb->len < maxlen)
755 maxlen = skb->len;
756
757 memcpy(data, skb->data, maxlen);
758
759 return maxlen;
760 }
761
762 int iwlagn_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
763 {
764 struct iwl_host_cmd cmd = {
765 .id = REPLY_SCAN_CMD,
766 .len = { sizeof(struct iwl_scan_cmd), },
767 .flags = CMD_SYNC,
768 };
769 struct iwl_scan_cmd *scan;
770 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
771 u32 rate_flags = 0;
772 u16 cmd_len;
773 u16 rx_chain = 0;
774 enum ieee80211_band band;
775 u8 n_probes = 0;
776 u8 rx_ant = priv->hw_params.valid_rx_ant;
777 u8 rate;
778 bool is_active = false;
779 int chan_mod;
780 u8 active_chains;
781 u8 scan_tx_antennas = priv->hw_params.valid_tx_ant;
782 int ret;
783
784 lockdep_assert_held(&priv->mutex);
785
786 if (vif)
787 ctx = iwl_rxon_ctx_from_vif(vif);
788
789 if (!priv->scan_cmd) {
790 priv->scan_cmd = kmalloc(sizeof(struct iwl_scan_cmd) +
791 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
792 if (!priv->scan_cmd) {
793 IWL_DEBUG_SCAN(priv,
794 "fail to allocate memory for scan\n");
795 return -ENOMEM;
796 }
797 }
798 scan = priv->scan_cmd;
799 memset(scan, 0, sizeof(struct iwl_scan_cmd) + IWL_MAX_SCAN_SIZE);
800
801 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
802 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
803
804 if (priv->scan_type != IWL_SCAN_OFFCH_TX &&
805 iwl_is_any_associated(priv)) {
806 u16 interval = 0;
807 u32 extra;
808 u32 suspend_time = 100;
809 u32 scan_suspend_time = 100;
810
811 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
812 switch (priv->scan_type) {
813 case IWL_SCAN_OFFCH_TX:
814 WARN_ON(1);
815 break;
816 case IWL_SCAN_RADIO_RESET:
817 interval = 0;
818 break;
819 case IWL_SCAN_NORMAL:
820 interval = vif->bss_conf.beacon_int;
821 break;
822 }
823
824 scan->suspend_time = 0;
825 scan->max_out_time = cpu_to_le32(200 * 1024);
826 if (!interval)
827 interval = suspend_time;
828
829 extra = (suspend_time / interval) << 22;
830 scan_suspend_time = (extra |
831 ((suspend_time % interval) * 1024));
832 scan->suspend_time = cpu_to_le32(scan_suspend_time);
833 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
834 scan_suspend_time, interval);
835 } else if (priv->scan_type == IWL_SCAN_OFFCH_TX) {
836 scan->suspend_time = 0;
837 scan->max_out_time =
838 cpu_to_le32(1024 * priv->offchan_tx_timeout);
839 }
840
841 switch (priv->scan_type) {
842 case IWL_SCAN_RADIO_RESET:
843 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
844 break;
845 case IWL_SCAN_NORMAL:
846 if (priv->scan_request->n_ssids) {
847 int i, p = 0;
848 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
849 for (i = 0; i < priv->scan_request->n_ssids; i++) {
850 /* always does wildcard anyway */
851 if (!priv->scan_request->ssids[i].ssid_len)
852 continue;
853 scan->direct_scan[p].id = WLAN_EID_SSID;
854 scan->direct_scan[p].len =
855 priv->scan_request->ssids[i].ssid_len;
856 memcpy(scan->direct_scan[p].ssid,
857 priv->scan_request->ssids[i].ssid,
858 priv->scan_request->ssids[i].ssid_len);
859 n_probes++;
860 p++;
861 }
862 is_active = true;
863 } else
864 IWL_DEBUG_SCAN(priv, "Start passive scan.\n");
865 break;
866 case IWL_SCAN_OFFCH_TX:
867 IWL_DEBUG_SCAN(priv, "Start offchannel TX scan.\n");
868 break;
869 }
870
871 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
872 scan->tx_cmd.sta_id = ctx->bcast_sta_id;
873 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
874
875 switch (priv->scan_band) {
876 case IEEE80211_BAND_2GHZ:
877 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
878 chan_mod = le32_to_cpu(
879 priv->contexts[IWL_RXON_CTX_BSS].active.flags &
880 RXON_FLG_CHANNEL_MODE_MSK)
881 >> RXON_FLG_CHANNEL_MODE_POS;
882 if (chan_mod == CHANNEL_MODE_PURE_40) {
883 rate = IWL_RATE_6M_PLCP;
884 } else {
885 rate = IWL_RATE_1M_PLCP;
886 rate_flags = RATE_MCS_CCK_MSK;
887 }
888 /*
889 * Internal scans are passive, so we can indiscriminately set
890 * the BT ignore flag on 2.4 GHz since it applies to TX only.
891 */
892 if (priv->cfg->bt_params &&
893 priv->cfg->bt_params->advanced_bt_coexist)
894 scan->tx_cmd.tx_flags |= TX_CMD_FLG_IGNORE_BT;
895 break;
896 case IEEE80211_BAND_5GHZ:
897 rate = IWL_RATE_6M_PLCP;
898 break;
899 default:
900 IWL_WARN(priv, "Invalid scan band\n");
901 return -EIO;
902 }
903
904 /*
905 * If active scanning is requested but a certain channel is
906 * marked passive, we can do active scanning if we detect
907 * transmissions.
908 *
909 * There is an issue with some firmware versions that triggers
910 * a sysassert on a "good CRC threshold" of zero (== disabled),
911 * on a radar channel even though this means that we should NOT
912 * send probes.
913 *
914 * The "good CRC threshold" is the number of frames that we
915 * need to receive during our dwell time on a channel before
916 * sending out probes -- setting this to a huge value will
917 * mean we never reach it, but at the same time work around
918 * the aforementioned issue. Thus use IWL_GOOD_CRC_TH_NEVER
919 * here instead of IWL_GOOD_CRC_TH_DISABLED.
920 *
921 * This was fixed in later versions along with some other
922 * scan changes, and the threshold behaves as a flag in those
923 * versions.
924 */
925 if (priv->new_scan_threshold_behaviour)
926 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
927 IWL_GOOD_CRC_TH_DISABLED;
928 else
929 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
930 IWL_GOOD_CRC_TH_NEVER;
931
932 band = priv->scan_band;
933
934 if (priv->cfg->scan_rx_antennas[band])
935 rx_ant = priv->cfg->scan_rx_antennas[band];
936
937 if (band == IEEE80211_BAND_2GHZ &&
938 priv->cfg->bt_params &&
939 priv->cfg->bt_params->advanced_bt_coexist) {
940 /* transmit 2.4 GHz probes only on first antenna */
941 scan_tx_antennas = first_antenna(scan_tx_antennas);
942 }
943
944 priv->scan_tx_ant[band] = iwl_toggle_tx_ant(priv, priv->scan_tx_ant[band],
945 scan_tx_antennas);
946 rate_flags |= iwl_ant_idx_to_flags(priv->scan_tx_ant[band]);
947 scan->tx_cmd.rate_n_flags = iwl_hw_set_rate_n_flags(rate, rate_flags);
948
949 /* In power save mode use one chain, otherwise use all chains */
950 if (test_bit(STATUS_POWER_PMI, &priv->status)) {
951 /* rx_ant has been set to all valid chains previously */
952 active_chains = rx_ant &
953 ((u8)(priv->chain_noise_data.active_chains));
954 if (!active_chains)
955 active_chains = rx_ant;
956
957 IWL_DEBUG_SCAN(priv, "chain_noise_data.active_chains: %u\n",
958 priv->chain_noise_data.active_chains);
959
960 rx_ant = first_antenna(active_chains);
961 }
962 if (priv->cfg->bt_params &&
963 priv->cfg->bt_params->advanced_bt_coexist &&
964 priv->bt_full_concurrent) {
965 /* operated as 1x1 in full concurrency mode */
966 rx_ant = first_antenna(rx_ant);
967 }
968
969 /* MIMO is not used here, but value is required */
970 rx_chain |= priv->hw_params.valid_rx_ant << RXON_RX_CHAIN_VALID_POS;
971 rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS;
972 rx_chain |= rx_ant << RXON_RX_CHAIN_FORCE_SEL_POS;
973 rx_chain |= 0x1 << RXON_RX_CHAIN_DRIVER_FORCE_POS;
974 scan->rx_chain = cpu_to_le16(rx_chain);
975 switch (priv->scan_type) {
976 case IWL_SCAN_NORMAL:
977 cmd_len = iwl_fill_probe_req(priv,
978 (struct ieee80211_mgmt *)scan->data,
979 vif->addr,
980 priv->scan_request->ie,
981 priv->scan_request->ie_len,
982 IWL_MAX_SCAN_SIZE - sizeof(*scan));
983 break;
984 case IWL_SCAN_RADIO_RESET:
985 /* use bcast addr, will not be transmitted but must be valid */
986 cmd_len = iwl_fill_probe_req(priv,
987 (struct ieee80211_mgmt *)scan->data,
988 iwl_bcast_addr, NULL, 0,
989 IWL_MAX_SCAN_SIZE - sizeof(*scan));
990 break;
991 case IWL_SCAN_OFFCH_TX:
992 cmd_len = iwl_fill_offch_tx(priv, scan->data,
993 IWL_MAX_SCAN_SIZE
994 - sizeof(*scan)
995 - sizeof(struct iwl_scan_channel));
996 scan->scan_flags |= IWL_SCAN_FLAGS_ACTION_FRAME_TX;
997 break;
998 default:
999 BUG();
1000 }
1001 scan->tx_cmd.len = cpu_to_le16(cmd_len);
1002
1003 scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
1004 RXON_FILTER_BCON_AWARE_MSK);
1005
1006 switch (priv->scan_type) {
1007 case IWL_SCAN_RADIO_RESET:
1008 scan->channel_count =
1009 iwl_get_single_channel_for_scan(priv, vif, band,
1010 (void *)&scan->data[cmd_len]);
1011 break;
1012 case IWL_SCAN_NORMAL:
1013 scan->channel_count =
1014 iwl_get_channels_for_scan(priv, vif, band,
1015 is_active, n_probes,
1016 (void *)&scan->data[cmd_len]);
1017 break;
1018 case IWL_SCAN_OFFCH_TX: {
1019 struct iwl_scan_channel *scan_ch;
1020
1021 scan->channel_count = 1;
1022
1023 scan_ch = (void *)&scan->data[cmd_len];
1024 scan_ch->type = SCAN_CHANNEL_TYPE_ACTIVE;
1025 scan_ch->channel =
1026 cpu_to_le16(priv->offchan_tx_chan->hw_value);
1027 scan_ch->active_dwell =
1028 cpu_to_le16(priv->offchan_tx_timeout);
1029 scan_ch->passive_dwell = 0;
1030
1031 /* Set txpower levels to defaults */
1032 scan_ch->dsp_atten = 110;
1033
1034 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1035 * power level:
1036 * scan_ch->tx_gain = ((1 << 5) | (2 << 3)) | 3;
1037 */
1038 if (priv->offchan_tx_chan->band == IEEE80211_BAND_5GHZ)
1039 scan_ch->tx_gain = ((1 << 5) | (3 << 3)) | 3;
1040 else
1041 scan_ch->tx_gain = ((1 << 5) | (5 << 3));
1042 }
1043 break;
1044 }
1045
1046 if (scan->channel_count == 0) {
1047 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
1048 return -EIO;
1049 }
1050
1051 cmd.len[0] += le16_to_cpu(scan->tx_cmd.len) +
1052 scan->channel_count * sizeof(struct iwl_scan_channel);
1053 cmd.data[0] = scan;
1054 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1055 scan->len = cpu_to_le16(cmd.len[0]);
1056
1057 /* set scan bit here for PAN params */
1058 set_bit(STATUS_SCAN_HW, &priv->status);
1059
1060 ret = iwlagn_set_pan_params(priv);
1061 if (ret)
1062 return ret;
1063
1064 ret = trans_send_cmd(&priv->trans, &cmd);
1065 if (ret) {
1066 clear_bit(STATUS_SCAN_HW, &priv->status);
1067 iwlagn_set_pan_params(priv);
1068 }
1069
1070 return ret;
1071 }
1072
1073 int iwlagn_manage_ibss_station(struct iwl_priv *priv,
1074 struct ieee80211_vif *vif, bool add)
1075 {
1076 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
1077
1078 if (add)
1079 return iwlagn_add_bssid_station(priv, vif_priv->ctx,
1080 vif->bss_conf.bssid,
1081 &vif_priv->ibss_bssid_sta_id);
1082 return iwl_remove_station(priv, vif_priv->ibss_bssid_sta_id,
1083 vif->bss_conf.bssid);
1084 }
1085
1086 void iwl_free_tfds_in_queue(struct iwl_priv *priv,
1087 int sta_id, int tid, int freed)
1088 {
1089 lockdep_assert_held(&priv->sta_lock);
1090
1091 if (priv->stations[sta_id].tid[tid].tfds_in_queue >= freed)
1092 priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1093 else {
1094 IWL_DEBUG_TX(priv, "free more than tfds_in_queue (%u:%d)\n",
1095 priv->stations[sta_id].tid[tid].tfds_in_queue,
1096 freed);
1097 priv->stations[sta_id].tid[tid].tfds_in_queue = 0;
1098 }
1099 }
1100
1101 #define IWL_FLUSH_WAIT_MS 2000
1102
1103 int iwlagn_wait_tx_queue_empty(struct iwl_priv *priv)
1104 {
1105 struct iwl_tx_queue *txq;
1106 struct iwl_queue *q;
1107 int cnt;
1108 unsigned long now = jiffies;
1109 int ret = 0;
1110
1111 /* waiting for all the tx frames complete might take a while */
1112 for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) {
1113 if (cnt == priv->cmd_queue)
1114 continue;
1115 txq = &priv->txq[cnt];
1116 q = &txq->q;
1117 while (q->read_ptr != q->write_ptr && !time_after(jiffies,
1118 now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS)))
1119 msleep(1);
1120
1121 if (q->read_ptr != q->write_ptr) {
1122 IWL_ERR(priv, "fail to flush all tx fifo queues\n");
1123 ret = -ETIMEDOUT;
1124 break;
1125 }
1126 }
1127 return ret;
1128 }
1129
1130 #define IWL_TX_QUEUE_MSK 0xfffff
1131
1132 /**
1133 * iwlagn_txfifo_flush: send REPLY_TXFIFO_FLUSH command to uCode
1134 *
1135 * pre-requirements:
1136 * 1. acquire mutex before calling
1137 * 2. make sure rf is on and not in exit state
1138 */
1139 int iwlagn_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
1140 {
1141 struct iwl_txfifo_flush_cmd flush_cmd;
1142 struct iwl_host_cmd cmd = {
1143 .id = REPLY_TXFIFO_FLUSH,
1144 .len = { sizeof(struct iwl_txfifo_flush_cmd), },
1145 .flags = CMD_SYNC,
1146 .data = { &flush_cmd, },
1147 };
1148
1149 might_sleep();
1150
1151 memset(&flush_cmd, 0, sizeof(flush_cmd));
1152 if (flush_control & BIT(IWL_RXON_CTX_BSS))
1153 flush_cmd.fifo_control = IWL_SCD_VO_MSK | IWL_SCD_VI_MSK |
1154 IWL_SCD_BE_MSK | IWL_SCD_BK_MSK |
1155 IWL_SCD_MGMT_MSK;
1156 if ((flush_control & BIT(IWL_RXON_CTX_PAN)) &&
1157 (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS)))
1158 flush_cmd.fifo_control |= IWL_PAN_SCD_VO_MSK |
1159 IWL_PAN_SCD_VI_MSK | IWL_PAN_SCD_BE_MSK |
1160 IWL_PAN_SCD_BK_MSK | IWL_PAN_SCD_MGMT_MSK |
1161 IWL_PAN_SCD_MULTICAST_MSK;
1162
1163 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1164 flush_cmd.fifo_control |= IWL_AGG_TX_QUEUE_MSK;
1165
1166 IWL_DEBUG_INFO(priv, "fifo queue control: 0X%x\n",
1167 flush_cmd.fifo_control);
1168 flush_cmd.flush_control = cpu_to_le16(flush_control);
1169
1170 return trans_send_cmd(&priv->trans, &cmd);
1171 }
1172
1173 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
1174 {
1175 mutex_lock(&priv->mutex);
1176 ieee80211_stop_queues(priv->hw);
1177 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
1178 IWL_ERR(priv, "flush request fail\n");
1179 goto done;
1180 }
1181 IWL_DEBUG_INFO(priv, "wait transmit/flush all frames\n");
1182 iwlagn_wait_tx_queue_empty(priv);
1183 done:
1184 ieee80211_wake_queues(priv->hw);
1185 mutex_unlock(&priv->mutex);
1186 }
1187
1188 /*
1189 * BT coex
1190 */
1191 /*
1192 * Macros to access the lookup table.
1193 *
1194 * The lookup table has 7 inputs: bt3_prio, bt3_txrx, bt_rf_act, wifi_req,
1195 * wifi_prio, wifi_txrx and wifi_sh_ant_req.
1196 *
1197 * It has three outputs: WLAN_ACTIVE, WLAN_KILL and ANT_SWITCH
1198 *
1199 * The format is that "registers" 8 through 11 contain the WLAN_ACTIVE bits
1200 * one after another in 32-bit registers, and "registers" 0 through 7 contain
1201 * the WLAN_KILL and ANT_SWITCH bits interleaved (in that order).
1202 *
1203 * These macros encode that format.
1204 */
1205 #define LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, wifi_req, wifi_prio, \
1206 wifi_txrx, wifi_sh_ant_req) \
1207 (bt3_prio | (bt3_txrx << 1) | (bt_rf_act << 2) | (wifi_req << 3) | \
1208 (wifi_prio << 4) | (wifi_txrx << 5) | (wifi_sh_ant_req << 6))
1209
1210 #define LUT_PTA_WLAN_ACTIVE_OP(lut, op, val) \
1211 lut[8 + ((val) >> 5)] op (cpu_to_le32(BIT((val) & 0x1f)))
1212 #define LUT_TEST_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1213 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1214 (!!(LUT_PTA_WLAN_ACTIVE_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, \
1215 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
1216 wifi_sh_ant_req))))
1217 #define LUT_SET_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1218 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1219 LUT_PTA_WLAN_ACTIVE_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, \
1220 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
1221 wifi_sh_ant_req))
1222 #define LUT_CLEAR_PTA_WLAN_ACTIVE(lut, bt3_prio, bt3_txrx, bt_rf_act, \
1223 wifi_req, wifi_prio, wifi_txrx, \
1224 wifi_sh_ant_req) \
1225 LUT_PTA_WLAN_ACTIVE_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, \
1226 bt_rf_act, wifi_req, wifi_prio, wifi_txrx, \
1227 wifi_sh_ant_req))
1228
1229 #define LUT_WLAN_KILL_OP(lut, op, val) \
1230 lut[(val) >> 4] op (cpu_to_le32(BIT(((val) << 1) & 0x1e)))
1231 #define LUT_TEST_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1232 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1233 (!!(LUT_WLAN_KILL_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1234 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))))
1235 #define LUT_SET_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1236 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1237 LUT_WLAN_KILL_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1238 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
1239 #define LUT_CLEAR_WLAN_KILL(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1240 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1241 LUT_WLAN_KILL_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1242 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
1243
1244 #define LUT_ANT_SWITCH_OP(lut, op, val) \
1245 lut[(val) >> 4] op (cpu_to_le32(BIT((((val) << 1) & 0x1e) + 1)))
1246 #define LUT_TEST_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1247 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1248 (!!(LUT_ANT_SWITCH_OP(lut, &, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1249 wifi_req, wifi_prio, wifi_txrx, \
1250 wifi_sh_ant_req))))
1251 #define LUT_SET_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1252 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1253 LUT_ANT_SWITCH_OP(lut, |=, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1254 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
1255 #define LUT_CLEAR_ANT_SWITCH(lut, bt3_prio, bt3_txrx, bt_rf_act, wifi_req, \
1256 wifi_prio, wifi_txrx, wifi_sh_ant_req) \
1257 LUT_ANT_SWITCH_OP(lut, &= ~, LUT_VALUE(bt3_prio, bt3_txrx, bt_rf_act, \
1258 wifi_req, wifi_prio, wifi_txrx, wifi_sh_ant_req))
1259
1260 static const __le32 iwlagn_def_3w_lookup[12] = {
1261 cpu_to_le32(0xaaaaaaaa),
1262 cpu_to_le32(0xaaaaaaaa),
1263 cpu_to_le32(0xaeaaaaaa),
1264 cpu_to_le32(0xaaaaaaaa),
1265 cpu_to_le32(0xcc00ff28),
1266 cpu_to_le32(0x0000aaaa),
1267 cpu_to_le32(0xcc00aaaa),
1268 cpu_to_le32(0x0000aaaa),
1269 cpu_to_le32(0xc0004000),
1270 cpu_to_le32(0x00004000),
1271 cpu_to_le32(0xf0005000),
1272 cpu_to_le32(0xf0005000),
1273 };
1274
1275 static const __le32 iwlagn_concurrent_lookup[12] = {
1276 cpu_to_le32(0xaaaaaaaa),
1277 cpu_to_le32(0xaaaaaaaa),
1278 cpu_to_le32(0xaaaaaaaa),
1279 cpu_to_le32(0xaaaaaaaa),
1280 cpu_to_le32(0xaaaaaaaa),
1281 cpu_to_le32(0xaaaaaaaa),
1282 cpu_to_le32(0xaaaaaaaa),
1283 cpu_to_le32(0xaaaaaaaa),
1284 cpu_to_le32(0x00000000),
1285 cpu_to_le32(0x00000000),
1286 cpu_to_le32(0x00000000),
1287 cpu_to_le32(0x00000000),
1288 };
1289
1290 void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
1291 {
1292 struct iwl_basic_bt_cmd basic = {
1293 .max_kill = IWLAGN_BT_MAX_KILL_DEFAULT,
1294 .bt3_timer_t7_value = IWLAGN_BT3_T7_DEFAULT,
1295 .bt3_prio_sample_time = IWLAGN_BT3_PRIO_SAMPLE_DEFAULT,
1296 .bt3_timer_t2_value = IWLAGN_BT3_T2_DEFAULT,
1297 };
1298 struct iwl6000_bt_cmd bt_cmd_6000;
1299 struct iwl2000_bt_cmd bt_cmd_2000;
1300 int ret;
1301
1302 BUILD_BUG_ON(sizeof(iwlagn_def_3w_lookup) !=
1303 sizeof(basic.bt3_lookup_table));
1304
1305 if (priv->cfg->bt_params) {
1306 if (priv->cfg->bt_params->bt_session_2) {
1307 bt_cmd_2000.prio_boost = cpu_to_le32(
1308 priv->cfg->bt_params->bt_prio_boost);
1309 bt_cmd_2000.tx_prio_boost = 0;
1310 bt_cmd_2000.rx_prio_boost = 0;
1311 } else {
1312 bt_cmd_6000.prio_boost =
1313 priv->cfg->bt_params->bt_prio_boost;
1314 bt_cmd_6000.tx_prio_boost = 0;
1315 bt_cmd_6000.rx_prio_boost = 0;
1316 }
1317 } else {
1318 IWL_ERR(priv, "failed to construct BT Coex Config\n");
1319 return;
1320 }
1321
1322 basic.kill_ack_mask = priv->kill_ack_mask;
1323 basic.kill_cts_mask = priv->kill_cts_mask;
1324 basic.valid = priv->bt_valid;
1325
1326 /*
1327 * Configure BT coex mode to "no coexistence" when the
1328 * user disabled BT coexistence, we have no interface
1329 * (might be in monitor mode), or the interface is in
1330 * IBSS mode (no proper uCode support for coex then).
1331 */
1332 if (!iwlagn_mod_params.bt_coex_active ||
1333 priv->iw_mode == NL80211_IFTYPE_ADHOC) {
1334 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_DISABLED;
1335 } else {
1336 basic.flags = IWLAGN_BT_FLAG_COEX_MODE_3W <<
1337 IWLAGN_BT_FLAG_COEX_MODE_SHIFT;
1338
1339 if (!priv->bt_enable_pspoll)
1340 basic.flags |= IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
1341 else
1342 basic.flags &= ~IWLAGN_BT_FLAG_SYNC_2_BT_DISABLE;
1343
1344 if (priv->bt_ch_announce)
1345 basic.flags |= IWLAGN_BT_FLAG_CHANNEL_INHIBITION;
1346 IWL_DEBUG_COEX(priv, "BT coex flag: 0X%x\n", basic.flags);
1347 }
1348 priv->bt_enable_flag = basic.flags;
1349 if (priv->bt_full_concurrent)
1350 memcpy(basic.bt3_lookup_table, iwlagn_concurrent_lookup,
1351 sizeof(iwlagn_concurrent_lookup));
1352 else
1353 memcpy(basic.bt3_lookup_table, iwlagn_def_3w_lookup,
1354 sizeof(iwlagn_def_3w_lookup));
1355
1356 IWL_DEBUG_COEX(priv, "BT coex %s in %s mode\n",
1357 basic.flags ? "active" : "disabled",
1358 priv->bt_full_concurrent ?
1359 "full concurrency" : "3-wire");
1360
1361 if (priv->cfg->bt_params->bt_session_2) {
1362 memcpy(&bt_cmd_2000.basic, &basic,
1363 sizeof(basic));
1364 ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG,
1365 CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
1366 } else {
1367 memcpy(&bt_cmd_6000.basic, &basic,
1368 sizeof(basic));
1369 ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG,
1370 CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
1371 }
1372 if (ret)
1373 IWL_ERR(priv, "failed to send BT Coex Config\n");
1374
1375 }
1376
1377 void iwlagn_bt_adjust_rssi_monitor(struct iwl_priv *priv, bool rssi_ena)
1378 {
1379 struct iwl_rxon_context *ctx, *found_ctx = NULL;
1380 bool found_ap = false;
1381
1382 lockdep_assert_held(&priv->mutex);
1383
1384 /* Check whether AP or GO mode is active. */
1385 if (rssi_ena) {
1386 for_each_context(priv, ctx) {
1387 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_AP &&
1388 iwl_is_associated_ctx(ctx)) {
1389 found_ap = true;
1390 break;
1391 }
1392 }
1393 }
1394
1395 /*
1396 * If disable was received or If GO/AP mode, disable RSSI
1397 * measurements.
1398 */
1399 if (!rssi_ena || found_ap) {
1400 if (priv->cur_rssi_ctx) {
1401 ctx = priv->cur_rssi_ctx;
1402 ieee80211_disable_rssi_reports(ctx->vif);
1403 priv->cur_rssi_ctx = NULL;
1404 }
1405 return;
1406 }
1407
1408 /*
1409 * If rssi measurements need to be enabled, consider all cases now.
1410 * Figure out how many contexts are active.
1411 */
1412 for_each_context(priv, ctx) {
1413 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION &&
1414 iwl_is_associated_ctx(ctx)) {
1415 found_ctx = ctx;
1416 break;
1417 }
1418 }
1419
1420 /*
1421 * rssi monitor already enabled for the correct interface...nothing
1422 * to do.
1423 */
1424 if (found_ctx == priv->cur_rssi_ctx)
1425 return;
1426
1427 /*
1428 * Figure out if rssi monitor is currently enabled, and needs
1429 * to be changed. If rssi monitor is already enabled, disable
1430 * it first else just enable rssi measurements on the
1431 * interface found above.
1432 */
1433 if (priv->cur_rssi_ctx) {
1434 ctx = priv->cur_rssi_ctx;
1435 if (ctx->vif)
1436 ieee80211_disable_rssi_reports(ctx->vif);
1437 }
1438
1439 priv->cur_rssi_ctx = found_ctx;
1440
1441 if (!found_ctx)
1442 return;
1443
1444 ieee80211_enable_rssi_reports(found_ctx->vif,
1445 IWLAGN_BT_PSP_MIN_RSSI_THRESHOLD,
1446 IWLAGN_BT_PSP_MAX_RSSI_THRESHOLD);
1447 }
1448
1449 static bool iwlagn_bt_traffic_is_sco(struct iwl_bt_uart_msg *uart_msg)
1450 {
1451 return BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3 >>
1452 BT_UART_MSG_FRAME3SCOESCO_POS;
1453 }
1454
1455 static void iwlagn_bt_traffic_change_work(struct work_struct *work)
1456 {
1457 struct iwl_priv *priv =
1458 container_of(work, struct iwl_priv, bt_traffic_change_work);
1459 struct iwl_rxon_context *ctx;
1460 int smps_request = -1;
1461
1462 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
1463 /* bt coex disabled */
1464 return;
1465 }
1466
1467 /*
1468 * Note: bt_traffic_load can be overridden by scan complete and
1469 * coex profile notifications. Ignore that since only bad consequence
1470 * can be not matching debug print with actual state.
1471 */
1472 IWL_DEBUG_COEX(priv, "BT traffic load changes: %d\n",
1473 priv->bt_traffic_load);
1474
1475 switch (priv->bt_traffic_load) {
1476 case IWL_BT_COEX_TRAFFIC_LOAD_NONE:
1477 if (priv->bt_status)
1478 smps_request = IEEE80211_SMPS_DYNAMIC;
1479 else
1480 smps_request = IEEE80211_SMPS_AUTOMATIC;
1481 break;
1482 case IWL_BT_COEX_TRAFFIC_LOAD_LOW:
1483 smps_request = IEEE80211_SMPS_DYNAMIC;
1484 break;
1485 case IWL_BT_COEX_TRAFFIC_LOAD_HIGH:
1486 case IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS:
1487 smps_request = IEEE80211_SMPS_STATIC;
1488 break;
1489 default:
1490 IWL_ERR(priv, "Invalid BT traffic load: %d\n",
1491 priv->bt_traffic_load);
1492 break;
1493 }
1494
1495 mutex_lock(&priv->mutex);
1496
1497 /*
1498 * We can not send command to firmware while scanning. When the scan
1499 * complete we will schedule this work again. We do check with mutex
1500 * locked to prevent new scan request to arrive. We do not check
1501 * STATUS_SCANNING to avoid race when queue_work two times from
1502 * different notifications, but quit and not perform any work at all.
1503 */
1504 if (test_bit(STATUS_SCAN_HW, &priv->status))
1505 goto out;
1506
1507 iwl_update_chain_flags(priv);
1508
1509 if (smps_request != -1) {
1510 priv->current_ht_config.smps = smps_request;
1511 for_each_context(priv, ctx) {
1512 if (ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION)
1513 ieee80211_request_smps(ctx->vif, smps_request);
1514 }
1515 }
1516
1517 /*
1518 * Dynamic PS poll related functionality. Adjust RSSI measurements if
1519 * necessary.
1520 */
1521 iwlagn_bt_coex_rssi_monitor(priv);
1522 out:
1523 mutex_unlock(&priv->mutex);
1524 }
1525
1526 /*
1527 * If BT sco traffic, and RSSI monitor is enabled, move measurements to the
1528 * correct interface or disable it if this is the last interface to be
1529 * removed.
1530 */
1531 void iwlagn_bt_coex_rssi_monitor(struct iwl_priv *priv)
1532 {
1533 if (priv->bt_is_sco &&
1534 priv->bt_traffic_load == IWL_BT_COEX_TRAFFIC_LOAD_CONTINUOUS)
1535 iwlagn_bt_adjust_rssi_monitor(priv, true);
1536 else
1537 iwlagn_bt_adjust_rssi_monitor(priv, false);
1538 }
1539
1540 static void iwlagn_print_uartmsg(struct iwl_priv *priv,
1541 struct iwl_bt_uart_msg *uart_msg)
1542 {
1543 IWL_DEBUG_COEX(priv, "Message Type = 0x%X, SSN = 0x%X, "
1544 "Update Req = 0x%X",
1545 (BT_UART_MSG_FRAME1MSGTYPE_MSK & uart_msg->frame1) >>
1546 BT_UART_MSG_FRAME1MSGTYPE_POS,
1547 (BT_UART_MSG_FRAME1SSN_MSK & uart_msg->frame1) >>
1548 BT_UART_MSG_FRAME1SSN_POS,
1549 (BT_UART_MSG_FRAME1UPDATEREQ_MSK & uart_msg->frame1) >>
1550 BT_UART_MSG_FRAME1UPDATEREQ_POS);
1551
1552 IWL_DEBUG_COEX(priv, "Open connections = 0x%X, Traffic load = 0x%X, "
1553 "Chl_SeqN = 0x%X, In band = 0x%X",
1554 (BT_UART_MSG_FRAME2OPENCONNECTIONS_MSK & uart_msg->frame2) >>
1555 BT_UART_MSG_FRAME2OPENCONNECTIONS_POS,
1556 (BT_UART_MSG_FRAME2TRAFFICLOAD_MSK & uart_msg->frame2) >>
1557 BT_UART_MSG_FRAME2TRAFFICLOAD_POS,
1558 (BT_UART_MSG_FRAME2CHLSEQN_MSK & uart_msg->frame2) >>
1559 BT_UART_MSG_FRAME2CHLSEQN_POS,
1560 (BT_UART_MSG_FRAME2INBAND_MSK & uart_msg->frame2) >>
1561 BT_UART_MSG_FRAME2INBAND_POS);
1562
1563 IWL_DEBUG_COEX(priv, "SCO/eSCO = 0x%X, Sniff = 0x%X, A2DP = 0x%X, "
1564 "ACL = 0x%X, Master = 0x%X, OBEX = 0x%X",
1565 (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3) >>
1566 BT_UART_MSG_FRAME3SCOESCO_POS,
1567 (BT_UART_MSG_FRAME3SNIFF_MSK & uart_msg->frame3) >>
1568 BT_UART_MSG_FRAME3SNIFF_POS,
1569 (BT_UART_MSG_FRAME3A2DP_MSK & uart_msg->frame3) >>
1570 BT_UART_MSG_FRAME3A2DP_POS,
1571 (BT_UART_MSG_FRAME3ACL_MSK & uart_msg->frame3) >>
1572 BT_UART_MSG_FRAME3ACL_POS,
1573 (BT_UART_MSG_FRAME3MASTER_MSK & uart_msg->frame3) >>
1574 BT_UART_MSG_FRAME3MASTER_POS,
1575 (BT_UART_MSG_FRAME3OBEX_MSK & uart_msg->frame3) >>
1576 BT_UART_MSG_FRAME3OBEX_POS);
1577
1578 IWL_DEBUG_COEX(priv, "Idle duration = 0x%X",
1579 (BT_UART_MSG_FRAME4IDLEDURATION_MSK & uart_msg->frame4) >>
1580 BT_UART_MSG_FRAME4IDLEDURATION_POS);
1581
1582 IWL_DEBUG_COEX(priv, "Tx Activity = 0x%X, Rx Activity = 0x%X, "
1583 "eSCO Retransmissions = 0x%X",
1584 (BT_UART_MSG_FRAME5TXACTIVITY_MSK & uart_msg->frame5) >>
1585 BT_UART_MSG_FRAME5TXACTIVITY_POS,
1586 (BT_UART_MSG_FRAME5RXACTIVITY_MSK & uart_msg->frame5) >>
1587 BT_UART_MSG_FRAME5RXACTIVITY_POS,
1588 (BT_UART_MSG_FRAME5ESCORETRANSMIT_MSK & uart_msg->frame5) >>
1589 BT_UART_MSG_FRAME5ESCORETRANSMIT_POS);
1590
1591 IWL_DEBUG_COEX(priv, "Sniff Interval = 0x%X, Discoverable = 0x%X",
1592 (BT_UART_MSG_FRAME6SNIFFINTERVAL_MSK & uart_msg->frame6) >>
1593 BT_UART_MSG_FRAME6SNIFFINTERVAL_POS,
1594 (BT_UART_MSG_FRAME6DISCOVERABLE_MSK & uart_msg->frame6) >>
1595 BT_UART_MSG_FRAME6DISCOVERABLE_POS);
1596
1597 IWL_DEBUG_COEX(priv, "Sniff Activity = 0x%X, Page = "
1598 "0x%X, Inquiry = 0x%X, Connectable = 0x%X",
1599 (BT_UART_MSG_FRAME7SNIFFACTIVITY_MSK & uart_msg->frame7) >>
1600 BT_UART_MSG_FRAME7SNIFFACTIVITY_POS,
1601 (BT_UART_MSG_FRAME7PAGE_MSK & uart_msg->frame7) >>
1602 BT_UART_MSG_FRAME7PAGE_POS,
1603 (BT_UART_MSG_FRAME7INQUIRY_MSK & uart_msg->frame7) >>
1604 BT_UART_MSG_FRAME7INQUIRY_POS,
1605 (BT_UART_MSG_FRAME7CONNECTABLE_MSK & uart_msg->frame7) >>
1606 BT_UART_MSG_FRAME7CONNECTABLE_POS);
1607 }
1608
1609 static void iwlagn_set_kill_msk(struct iwl_priv *priv,
1610 struct iwl_bt_uart_msg *uart_msg)
1611 {
1612 u8 kill_msk;
1613 static const __le32 bt_kill_ack_msg[2] = {
1614 IWLAGN_BT_KILL_ACK_MASK_DEFAULT,
1615 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
1616 static const __le32 bt_kill_cts_msg[2] = {
1617 IWLAGN_BT_KILL_CTS_MASK_DEFAULT,
1618 IWLAGN_BT_KILL_ACK_CTS_MASK_SCO };
1619
1620 kill_msk = (BT_UART_MSG_FRAME3SCOESCO_MSK & uart_msg->frame3)
1621 ? 1 : 0;
1622 if (priv->kill_ack_mask != bt_kill_ack_msg[kill_msk] ||
1623 priv->kill_cts_mask != bt_kill_cts_msg[kill_msk]) {
1624 priv->bt_valid |= IWLAGN_BT_VALID_KILL_ACK_MASK;
1625 priv->kill_ack_mask = bt_kill_ack_msg[kill_msk];
1626 priv->bt_valid |= IWLAGN_BT_VALID_KILL_CTS_MASK;
1627 priv->kill_cts_mask = bt_kill_cts_msg[kill_msk];
1628
1629 /* schedule to send runtime bt_config */
1630 queue_work(priv->workqueue, &priv->bt_runtime_config);
1631 }
1632 }
1633
1634 void iwlagn_bt_coex_profile_notif(struct iwl_priv *priv,
1635 struct iwl_rx_mem_buffer *rxb)
1636 {
1637 unsigned long flags;
1638 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1639 struct iwl_bt_coex_profile_notif *coex = &pkt->u.bt_coex_profile_notif;
1640 struct iwl_bt_uart_msg *uart_msg = &coex->last_bt_uart_msg;
1641
1642 if (priv->bt_enable_flag == IWLAGN_BT_FLAG_COEX_MODE_DISABLED) {
1643 /* bt coex disabled */
1644 return;
1645 }
1646
1647 IWL_DEBUG_COEX(priv, "BT Coex notification:\n");
1648 IWL_DEBUG_COEX(priv, " status: %d\n", coex->bt_status);
1649 IWL_DEBUG_COEX(priv, " traffic load: %d\n", coex->bt_traffic_load);
1650 IWL_DEBUG_COEX(priv, " CI compliance: %d\n",
1651 coex->bt_ci_compliance);
1652 iwlagn_print_uartmsg(priv, uart_msg);
1653
1654 priv->last_bt_traffic_load = priv->bt_traffic_load;
1655 priv->bt_is_sco = iwlagn_bt_traffic_is_sco(uart_msg);
1656
1657 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
1658 if (priv->bt_status != coex->bt_status ||
1659 priv->last_bt_traffic_load != coex->bt_traffic_load) {
1660 if (coex->bt_status) {
1661 /* BT on */
1662 if (!priv->bt_ch_announce)
1663 priv->bt_traffic_load =
1664 IWL_BT_COEX_TRAFFIC_LOAD_HIGH;
1665 else
1666 priv->bt_traffic_load =
1667 coex->bt_traffic_load;
1668 } else {
1669 /* BT off */
1670 priv->bt_traffic_load =
1671 IWL_BT_COEX_TRAFFIC_LOAD_NONE;
1672 }
1673 priv->bt_status = coex->bt_status;
1674 queue_work(priv->workqueue,
1675 &priv->bt_traffic_change_work);
1676 }
1677 }
1678
1679 iwlagn_set_kill_msk(priv, uart_msg);
1680
1681 /* FIXME: based on notification, adjust the prio_boost */
1682
1683 spin_lock_irqsave(&priv->lock, flags);
1684 priv->bt_ci_compliance = coex->bt_ci_compliance;
1685 spin_unlock_irqrestore(&priv->lock, flags);
1686 }
1687
1688 void iwlagn_bt_rx_handler_setup(struct iwl_priv *priv)
1689 {
1690 priv->rx_handlers[REPLY_BT_COEX_PROFILE_NOTIF] =
1691 iwlagn_bt_coex_profile_notif;
1692 }
1693
1694 void iwlagn_bt_setup_deferred_work(struct iwl_priv *priv)
1695 {
1696 INIT_WORK(&priv->bt_traffic_change_work,
1697 iwlagn_bt_traffic_change_work);
1698 }
1699
1700 void iwlagn_bt_cancel_deferred_work(struct iwl_priv *priv)
1701 {
1702 cancel_work_sync(&priv->bt_traffic_change_work);
1703 }
1704
1705 static bool is_single_rx_stream(struct iwl_priv *priv)
1706 {
1707 return priv->current_ht_config.smps == IEEE80211_SMPS_STATIC ||
1708 priv->current_ht_config.single_chain_sufficient;
1709 }
1710
1711 #define IWL_NUM_RX_CHAINS_MULTIPLE 3
1712 #define IWL_NUM_RX_CHAINS_SINGLE 2
1713 #define IWL_NUM_IDLE_CHAINS_DUAL 2
1714 #define IWL_NUM_IDLE_CHAINS_SINGLE 1
1715
1716 /*
1717 * Determine how many receiver/antenna chains to use.
1718 *
1719 * More provides better reception via diversity. Fewer saves power
1720 * at the expense of throughput, but only when not in powersave to
1721 * start with.
1722 *
1723 * MIMO (dual stream) requires at least 2, but works better with 3.
1724 * This does not determine *which* chains to use, just how many.
1725 */
1726 static int iwl_get_active_rx_chain_count(struct iwl_priv *priv)
1727 {
1728 if (priv->cfg->bt_params &&
1729 priv->cfg->bt_params->advanced_bt_coexist &&
1730 (priv->bt_full_concurrent ||
1731 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
1732 /*
1733 * only use chain 'A' in bt high traffic load or
1734 * full concurrency mode
1735 */
1736 return IWL_NUM_RX_CHAINS_SINGLE;
1737 }
1738 /* # of Rx chains to use when expecting MIMO. */
1739 if (is_single_rx_stream(priv))
1740 return IWL_NUM_RX_CHAINS_SINGLE;
1741 else
1742 return IWL_NUM_RX_CHAINS_MULTIPLE;
1743 }
1744
1745 /*
1746 * When we are in power saving mode, unless device support spatial
1747 * multiplexing power save, use the active count for rx chain count.
1748 */
1749 static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt)
1750 {
1751 /* # Rx chains when idling, depending on SMPS mode */
1752 switch (priv->current_ht_config.smps) {
1753 case IEEE80211_SMPS_STATIC:
1754 case IEEE80211_SMPS_DYNAMIC:
1755 return IWL_NUM_IDLE_CHAINS_SINGLE;
1756 case IEEE80211_SMPS_OFF:
1757 return active_cnt;
1758 default:
1759 WARN(1, "invalid SMPS mode %d",
1760 priv->current_ht_config.smps);
1761 return active_cnt;
1762 }
1763 }
1764
1765 /* up to 4 chains */
1766 static u8 iwl_count_chain_bitmap(u32 chain_bitmap)
1767 {
1768 u8 res;
1769 res = (chain_bitmap & BIT(0)) >> 0;
1770 res += (chain_bitmap & BIT(1)) >> 1;
1771 res += (chain_bitmap & BIT(2)) >> 2;
1772 res += (chain_bitmap & BIT(3)) >> 3;
1773 return res;
1774 }
1775
1776 /**
1777 * iwlagn_set_rxon_chain - Set up Rx chain usage in "staging" RXON image
1778 *
1779 * Selects how many and which Rx receivers/antennas/chains to use.
1780 * This should not be used for scan command ... it puts data in wrong place.
1781 */
1782 void iwlagn_set_rxon_chain(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
1783 {
1784 bool is_single = is_single_rx_stream(priv);
1785 bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status);
1786 u8 idle_rx_cnt, active_rx_cnt, valid_rx_cnt;
1787 u32 active_chains;
1788 u16 rx_chain;
1789
1790 /* Tell uCode which antennas are actually connected.
1791 * Before first association, we assume all antennas are connected.
1792 * Just after first association, iwl_chain_noise_calibration()
1793 * checks which antennas actually *are* connected. */
1794 if (priv->chain_noise_data.active_chains)
1795 active_chains = priv->chain_noise_data.active_chains;
1796 else
1797 active_chains = priv->hw_params.valid_rx_ant;
1798
1799 if (priv->cfg->bt_params &&
1800 priv->cfg->bt_params->advanced_bt_coexist &&
1801 (priv->bt_full_concurrent ||
1802 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)) {
1803 /*
1804 * only use chain 'A' in bt high traffic load or
1805 * full concurrency mode
1806 */
1807 active_chains = first_antenna(active_chains);
1808 }
1809
1810 rx_chain = active_chains << RXON_RX_CHAIN_VALID_POS;
1811
1812 /* How many receivers should we use? */
1813 active_rx_cnt = iwl_get_active_rx_chain_count(priv);
1814 idle_rx_cnt = iwl_get_idle_rx_chain_count(priv, active_rx_cnt);
1815
1816
1817 /* correct rx chain count according hw settings
1818 * and chain noise calibration
1819 */
1820 valid_rx_cnt = iwl_count_chain_bitmap(active_chains);
1821 if (valid_rx_cnt < active_rx_cnt)
1822 active_rx_cnt = valid_rx_cnt;
1823
1824 if (valid_rx_cnt < idle_rx_cnt)
1825 idle_rx_cnt = valid_rx_cnt;
1826
1827 rx_chain |= active_rx_cnt << RXON_RX_CHAIN_MIMO_CNT_POS;
1828 rx_chain |= idle_rx_cnt << RXON_RX_CHAIN_CNT_POS;
1829
1830 ctx->staging.rx_chain = cpu_to_le16(rx_chain);
1831
1832 if (!is_single && (active_rx_cnt >= IWL_NUM_RX_CHAINS_SINGLE) && is_cam)
1833 ctx->staging.rx_chain |= RXON_RX_CHAIN_MIMO_FORCE_MSK;
1834 else
1835 ctx->staging.rx_chain &= ~RXON_RX_CHAIN_MIMO_FORCE_MSK;
1836
1837 IWL_DEBUG_ASSOC(priv, "rx_chain=0x%X active=%d idle=%d\n",
1838 ctx->staging.rx_chain,
1839 active_rx_cnt, idle_rx_cnt);
1840
1841 WARN_ON(active_rx_cnt == 0 || idle_rx_cnt == 0 ||
1842 active_rx_cnt < idle_rx_cnt);
1843 }
1844
1845 u8 iwl_toggle_tx_ant(struct iwl_priv *priv, u8 ant, u8 valid)
1846 {
1847 int i;
1848 u8 ind = ant;
1849
1850 if (priv->band == IEEE80211_BAND_2GHZ &&
1851 priv->bt_traffic_load >= IWL_BT_COEX_TRAFFIC_LOAD_HIGH)
1852 return 0;
1853
1854 for (i = 0; i < RATE_ANT_NUM - 1; i++) {
1855 ind = (ind + 1) < RATE_ANT_NUM ? ind + 1 : 0;
1856 if (valid & BIT(ind))
1857 return ind;
1858 }
1859 return ant;
1860 }
1861
1862 static const char *get_csr_string(int cmd)
1863 {
1864 switch (cmd) {
1865 IWL_CMD(CSR_HW_IF_CONFIG_REG);
1866 IWL_CMD(CSR_INT_COALESCING);
1867 IWL_CMD(CSR_INT);
1868 IWL_CMD(CSR_INT_MASK);
1869 IWL_CMD(CSR_FH_INT_STATUS);
1870 IWL_CMD(CSR_GPIO_IN);
1871 IWL_CMD(CSR_RESET);
1872 IWL_CMD(CSR_GP_CNTRL);
1873 IWL_CMD(CSR_HW_REV);
1874 IWL_CMD(CSR_EEPROM_REG);
1875 IWL_CMD(CSR_EEPROM_GP);
1876 IWL_CMD(CSR_OTP_GP_REG);
1877 IWL_CMD(CSR_GIO_REG);
1878 IWL_CMD(CSR_GP_UCODE_REG);
1879 IWL_CMD(CSR_GP_DRIVER_REG);
1880 IWL_CMD(CSR_UCODE_DRV_GP1);
1881 IWL_CMD(CSR_UCODE_DRV_GP2);
1882 IWL_CMD(CSR_LED_REG);
1883 IWL_CMD(CSR_DRAM_INT_TBL_REG);
1884 IWL_CMD(CSR_GIO_CHICKEN_BITS);
1885 IWL_CMD(CSR_ANA_PLL_CFG);
1886 IWL_CMD(CSR_HW_REV_WA_REG);
1887 IWL_CMD(CSR_DBG_HPET_MEM_REG);
1888 default:
1889 return "UNKNOWN";
1890 }
1891 }
1892
1893 void iwl_dump_csr(struct iwl_priv *priv)
1894 {
1895 int i;
1896 static const u32 csr_tbl[] = {
1897 CSR_HW_IF_CONFIG_REG,
1898 CSR_INT_COALESCING,
1899 CSR_INT,
1900 CSR_INT_MASK,
1901 CSR_FH_INT_STATUS,
1902 CSR_GPIO_IN,
1903 CSR_RESET,
1904 CSR_GP_CNTRL,
1905 CSR_HW_REV,
1906 CSR_EEPROM_REG,
1907 CSR_EEPROM_GP,
1908 CSR_OTP_GP_REG,
1909 CSR_GIO_REG,
1910 CSR_GP_UCODE_REG,
1911 CSR_GP_DRIVER_REG,
1912 CSR_UCODE_DRV_GP1,
1913 CSR_UCODE_DRV_GP2,
1914 CSR_LED_REG,
1915 CSR_DRAM_INT_TBL_REG,
1916 CSR_GIO_CHICKEN_BITS,
1917 CSR_ANA_PLL_CFG,
1918 CSR_HW_REV_WA_REG,
1919 CSR_DBG_HPET_MEM_REG
1920 };
1921 IWL_ERR(priv, "CSR values:\n");
1922 IWL_ERR(priv, "(2nd byte of CSR_INT_COALESCING is "
1923 "CSR_INT_PERIODIC_REG)\n");
1924 for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
1925 IWL_ERR(priv, " %25s: 0X%08x\n",
1926 get_csr_string(csr_tbl[i]),
1927 iwl_read32(priv, csr_tbl[i]));
1928 }
1929 }
1930
1931 static const char *get_fh_string(int cmd)
1932 {
1933 switch (cmd) {
1934 IWL_CMD(FH_RSCSR_CHNL0_STTS_WPTR_REG);
1935 IWL_CMD(FH_RSCSR_CHNL0_RBDCB_BASE_REG);
1936 IWL_CMD(FH_RSCSR_CHNL0_WPTR);
1937 IWL_CMD(FH_MEM_RCSR_CHNL0_CONFIG_REG);
1938 IWL_CMD(FH_MEM_RSSR_SHARED_CTRL_REG);
1939 IWL_CMD(FH_MEM_RSSR_RX_STATUS_REG);
1940 IWL_CMD(FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV);
1941 IWL_CMD(FH_TSSR_TX_STATUS_REG);
1942 IWL_CMD(FH_TSSR_TX_ERROR_REG);
1943 default:
1944 return "UNKNOWN";
1945 }
1946 }
1947
1948 int iwl_dump_fh(struct iwl_priv *priv, char **buf, bool display)
1949 {
1950 int i;
1951 #ifdef CONFIG_IWLWIFI_DEBUG
1952 int pos = 0;
1953 size_t bufsz = 0;
1954 #endif
1955 static const u32 fh_tbl[] = {
1956 FH_RSCSR_CHNL0_STTS_WPTR_REG,
1957 FH_RSCSR_CHNL0_RBDCB_BASE_REG,
1958 FH_RSCSR_CHNL0_WPTR,
1959 FH_MEM_RCSR_CHNL0_CONFIG_REG,
1960 FH_MEM_RSSR_SHARED_CTRL_REG,
1961 FH_MEM_RSSR_RX_STATUS_REG,
1962 FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV,
1963 FH_TSSR_TX_STATUS_REG,
1964 FH_TSSR_TX_ERROR_REG
1965 };
1966 #ifdef CONFIG_IWLWIFI_DEBUG
1967 if (display) {
1968 bufsz = ARRAY_SIZE(fh_tbl) * 48 + 40;
1969 *buf = kmalloc(bufsz, GFP_KERNEL);
1970 if (!*buf)
1971 return -ENOMEM;
1972 pos += scnprintf(*buf + pos, bufsz - pos,
1973 "FH register values:\n");
1974 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
1975 pos += scnprintf(*buf + pos, bufsz - pos,
1976 " %34s: 0X%08x\n",
1977 get_fh_string(fh_tbl[i]),
1978 iwl_read_direct32(priv, fh_tbl[i]));
1979 }
1980 return pos;
1981 }
1982 #endif
1983 IWL_ERR(priv, "FH register values:\n");
1984 for (i = 0; i < ARRAY_SIZE(fh_tbl); i++) {
1985 IWL_ERR(priv, " %34s: 0X%08x\n",
1986 get_fh_string(fh_tbl[i]),
1987 iwl_read_direct32(priv, fh_tbl[i]));
1988 }
1989 return 0;
1990 }
1991
1992 /* notification wait support */
1993 void iwlagn_init_notification_wait(struct iwl_priv *priv,
1994 struct iwl_notification_wait *wait_entry,
1995 u8 cmd,
1996 void (*fn)(struct iwl_priv *priv,
1997 struct iwl_rx_packet *pkt,
1998 void *data),
1999 void *fn_data)
2000 {
2001 wait_entry->fn = fn;
2002 wait_entry->fn_data = fn_data;
2003 wait_entry->cmd = cmd;
2004 wait_entry->triggered = false;
2005 wait_entry->aborted = false;
2006
2007 spin_lock_bh(&priv->notif_wait_lock);
2008 list_add(&wait_entry->list, &priv->notif_waits);
2009 spin_unlock_bh(&priv->notif_wait_lock);
2010 }
2011
2012 int iwlagn_wait_notification(struct iwl_priv *priv,
2013 struct iwl_notification_wait *wait_entry,
2014 unsigned long timeout)
2015 {
2016 int ret;
2017
2018 ret = wait_event_timeout(priv->notif_waitq,
2019 wait_entry->triggered || wait_entry->aborted,
2020 timeout);
2021
2022 spin_lock_bh(&priv->notif_wait_lock);
2023 list_del(&wait_entry->list);
2024 spin_unlock_bh(&priv->notif_wait_lock);
2025
2026 if (wait_entry->aborted)
2027 return -EIO;
2028
2029 /* return value is always >= 0 */
2030 if (ret <= 0)
2031 return -ETIMEDOUT;
2032 return 0;
2033 }
2034
2035 void iwlagn_remove_notification(struct iwl_priv *priv,
2036 struct iwl_notification_wait *wait_entry)
2037 {
2038 spin_lock_bh(&priv->notif_wait_lock);
2039 list_del(&wait_entry->list);
2040 spin_unlock_bh(&priv->notif_wait_lock);
2041 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree