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iwlwifi: mvm: add LQ flags definitions
[deliverable/linux.git] / drivers / net / wireless / iwlwifi / mvm / bt-coex.c
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931d4160
EG		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63
2b76ef13
EG		 64#include <net/mac80211.h>
65
931d4160
EG		 66#include "fw-api-bt-coex.h"
67#include "iwl-modparams.h"
68#include "mvm.h"
f421f9c3 69#include "iwl-debug.h"
931d4160
EG		 70
71#define EVENT_PRIO_ANT(_evt, _prio, _shrd_ant) \
72 [(_evt)] = (((_prio) << BT_COEX_PRIO_TBL_PRIO_POS) | \
73 ((_shrd_ant) << BT_COEX_PRIO_TBL_SHRD_ANT_POS))
74
75static const u8 iwl_bt_prio_tbl[BT_COEX_PRIO_TBL_EVT_MAX] = {
76 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB1,
77 BT_COEX_PRIO_TBL_PRIO_BYPASS, 0),
78 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_INIT_CALIB2,
79 BT_COEX_PRIO_TBL_PRIO_BYPASS, 1),
80 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW1,
81 BT_COEX_PRIO_TBL_PRIO_LOW, 0),
82 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_LOW2,
83 BT_COEX_PRIO_TBL_PRIO_LOW, 1),
84 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH1,
85 BT_COEX_PRIO_TBL_PRIO_HIGH, 0),
86 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_PERIODIC_CALIB_HIGH2,
87 BT_COEX_PRIO_TBL_PRIO_HIGH, 1),
88 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_DTIM,
89 BT_COEX_PRIO_TBL_DISABLED, 0),
90 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN52,
91 BT_COEX_PRIO_TBL_PRIO_COEX_OFF, 0),
92 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_SCAN24,
93 BT_COEX_PRIO_TBL_PRIO_COEX_ON, 0),
94 EVENT_PRIO_ANT(BT_COEX_PRIO_TBL_EVT_IDLE,
95 BT_COEX_PRIO_TBL_PRIO_COEX_IDLE, 0),
96 0, 0, 0, 0, 0, 0,
97};
98
99#undef EVENT_PRIO_ANT
100
2b76ef13
EG		 101#define BT_ENABLE_REDUCED_TXPOWER_THRESHOLD (-62)
102#define BT_DISABLE_REDUCED_TXPOWER_THRESHOLD (-65)
dac94da8 103#define BT_ANTENNA_COUPLING_THRESHOLD (30)
2b76ef13 104
931d4160
EG		 105int iwl_send_bt_prio_tbl(struct iwl_mvm *mvm)
106{
dac94da8
EG		 107 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX))
108 return 0;
109
931d4160
EG		 110 return iwl_mvm_send_cmd_pdu(mvm, BT_COEX_PRIO_TABLE, CMD_SYNC,
111 sizeof(struct iwl_bt_coex_prio_tbl_cmd),
112 &iwl_bt_prio_tbl);
113}
114
2de13cae 115const u32 iwl_bt_ack_kill_msk[BT_KILL_MSK_MAX] = {
5b7e662b
EG		 116 [BT_KILL_MSK_DEFAULT] = 0xffff0000,
117 [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
118 [BT_KILL_MSK_REDUCED_TXPOW] = 0,
931d4160
EG		 119};
120
2de13cae 121const u32 iwl_bt_cts_kill_msk[BT_KILL_MSK_MAX] = {
5b7e662b
EG		 122 [BT_KILL_MSK_DEFAULT] = 0xffff0000,
123 [BT_KILL_MSK_SCO_HID_A2DP] = 0xffffffff,
124 [BT_KILL_MSK_REDUCED_TXPOW] = 0,
931d4160
EG		 125};
126
dac94da8
EG		 127static const __le32 iwl_bt_prio_boost[BT_COEX_BOOST_SIZE] = {
128 cpu_to_le32(0xf0f0f0f0),
129 cpu_to_le32(0xc0c0c0c0),
130 cpu_to_le32(0xfcfcfcfc),
131 cpu_to_le32(0xff00ff00),
931d4160
EG		 132};
133
d1d5e3cd
EG		 134static const __le32 iwl_single_shared_ant[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = {
135 {
136 cpu_to_le32(0x40000000),
137 cpu_to_le32(0x00000000),
138 cpu_to_le32(0x44000000),
139 cpu_to_le32(0x00000000),
140 cpu_to_le32(0x40000000),
141 cpu_to_le32(0x00000000),
142 cpu_to_le32(0x44000000),
143 cpu_to_le32(0x00000000),
144 cpu_to_le32(0xc0004000),
145 cpu_to_le32(0xf0005000),
146 cpu_to_le32(0xc0004000),
147 cpu_to_le32(0xf0005000),
148 },
149 {
150 cpu_to_le32(0x40000000),
151 cpu_to_le32(0x00000000),
152 cpu_to_le32(0x44000000),
153 cpu_to_le32(0x00000000),
154 cpu_to_le32(0x40000000),
155 cpu_to_le32(0x00000000),
156 cpu_to_le32(0x44000000),
157 cpu_to_le32(0x00000000),
158 cpu_to_le32(0xc0004000),
159 cpu_to_le32(0xf0005000),
160 cpu_to_le32(0xc0004000),
161 cpu_to_le32(0xf0005000),
162 },
163 {
164 cpu_to_le32(0x40000000),
165 cpu_to_le32(0x00000000),
166 cpu_to_le32(0x44000000),
167 cpu_to_le32(0x00000000),
168 cpu_to_le32(0x40000000),
169 cpu_to_le32(0x00000000),
170 cpu_to_le32(0x44000000),
171 cpu_to_le32(0x00000000),
172 cpu_to_le32(0xc0004000),
173 cpu_to_le32(0xf0005000),
174 cpu_to_le32(0xc0004000),
175 cpu_to_le32(0xf0005000),
176 },
177};
178
dac94da8
EG		 179static const __le32 iwl_combined_lookup[BT_COEX_MAX_LUT][BT_COEX_LUT_SIZE] = {
180 {
181 /* Tight */
182 cpu_to_le32(0xaaaaaaaa),
183 cpu_to_le32(0xaaaaaaaa),
184 cpu_to_le32(0xaeaaaaaa),
185 cpu_to_le32(0xaaaaaaaa),
186 cpu_to_le32(0xcc00ff28),
187 cpu_to_le32(0x0000aaaa),
188 cpu_to_le32(0xcc00aaaa),
189 cpu_to_le32(0x0000aaaa),
190 cpu_to_le32(0xc0004000),
191 cpu_to_le32(0x00000000),
192 cpu_to_le32(0xf0005000),
193 cpu_to_le32(0xf0005000),
194 },
195 {
196 /* Loose */
197 cpu_to_le32(0xaaaaaaaa),
198 cpu_to_le32(0xaaaaaaaa),
199 cpu_to_le32(0xaaaaaaaa),
200 cpu_to_le32(0xaaaaaaaa),
201 cpu_to_le32(0xcc00ff28),
202 cpu_to_le32(0x0000aaaa),
203 cpu_to_le32(0xcc00aaaa),
204 cpu_to_le32(0x0000aaaa),
205 cpu_to_le32(0x00000000),
206 cpu_to_le32(0x00000000),
207 cpu_to_le32(0xf0005000),
208 cpu_to_le32(0xf0005000),
209 },
210 {
211 /* Tx Tx disabled */
212 cpu_to_le32(0xaaaaaaaa),
213 cpu_to_le32(0xaaaaaaaa),
214 cpu_to_le32(0xaaaaaaaa),
215 cpu_to_le32(0xaaaaaaaa),
216 cpu_to_le32(0xcc00ff28),
217 cpu_to_le32(0x0000aaaa),
218 cpu_to_le32(0xcc00aaaa),
219 cpu_to_le32(0x0000aaaa),
220 cpu_to_le32(0xC0004000),
221 cpu_to_le32(0xC0004000),
222 cpu_to_le32(0xF0005000),
223 cpu_to_le32(0xF0005000),
224 },
931d4160
EG		 225};
226
dac94da8
EG		 227/* 20MHz / 40MHz below / 40Mhz above*/
228static const __le64 iwl_ci_mask[][3] = {
229 /* dummy entry for channel 0 */
230 {cpu_to_le64(0), cpu_to_le64(0), cpu_to_le64(0)},
231 {
232 cpu_to_le64(0x0000001FFFULL),
233 cpu_to_le64(0x0ULL),
234 cpu_to_le64(0x00007FFFFFULL),
235 },
236 {
237 cpu_to_le64(0x000000FFFFULL),
238 cpu_to_le64(0x0ULL),
239 cpu_to_le64(0x0003FFFFFFULL),
240 },
241 {
242 cpu_to_le64(0x000003FFFCULL),
243 cpu_to_le64(0x0ULL),
244 cpu_to_le64(0x000FFFFFFCULL),
245 },
246 {
247 cpu_to_le64(0x00001FFFE0ULL),
248 cpu_to_le64(0x0ULL),
249 cpu_to_le64(0x007FFFFFE0ULL),
250 },
251 {
252 cpu_to_le64(0x00007FFF80ULL),
253 cpu_to_le64(0x00007FFFFFULL),
254 cpu_to_le64(0x01FFFFFF80ULL),
255 },
256 {
257 cpu_to_le64(0x0003FFFC00ULL),
258 cpu_to_le64(0x0003FFFFFFULL),
259 cpu_to_le64(0x0FFFFFFC00ULL),
260 },
261 {
262 cpu_to_le64(0x000FFFF000ULL),
263 cpu_to_le64(0x000FFFFFFCULL),
264 cpu_to_le64(0x3FFFFFF000ULL),
265 },
266 {
267 cpu_to_le64(0x007FFF8000ULL),
268 cpu_to_le64(0x007FFFFFE0ULL),
269 cpu_to_le64(0xFFFFFF8000ULL),
270 },
271 {
272 cpu_to_le64(0x01FFFE0000ULL),
273 cpu_to_le64(0x01FFFFFF80ULL),
274 cpu_to_le64(0xFFFFFE0000ULL),
275 },
276 {
277 cpu_to_le64(0x0FFFF00000ULL),
278 cpu_to_le64(0x0FFFFFFC00ULL),
279 cpu_to_le64(0x0ULL),
280 },
281 {
282 cpu_to_le64(0x3FFFC00000ULL),
283 cpu_to_le64(0x3FFFFFF000ULL),
284 cpu_to_le64(0x0)
285 },
286 {
287 cpu_to_le64(0xFFFE000000ULL),
288 cpu_to_le64(0xFFFFFF8000ULL),
289 cpu_to_le64(0x0)
290 },
291 {
292 cpu_to_le64(0xFFF8000000ULL),
293 cpu_to_le64(0xFFFFFE0000ULL),
294 cpu_to_le64(0x0)
295 },
296 {
297 cpu_to_le64(0xFE00000000ULL),
298 cpu_to_le64(0x0ULL),
299 cpu_to_le64(0x0)
300 },
931d4160
EG		 301};
302
dac94da8
EG		 303static const __le32 iwl_bt_mprio_lut[BT_COEX_MULTI_PRIO_LUT_SIZE] = {
304 cpu_to_le32(0x22002200),
305 cpu_to_le32(0x33113311),
e715c3a9
EG		 306};
307
4515f30f
EG		 308static enum iwl_bt_coex_lut_type
309iwl_get_coex_type(struct iwl_mvm *mvm, const struct ieee80211_vif *vif)
310{
311 struct ieee80211_chanctx_conf *chanctx_conf;
312 enum iwl_bt_coex_lut_type ret;
313 u16 phy_ctx_id;
314
9145d151
EG		 315 /*
316 * Checking that we hold mvm->mutex is a good idea, but the rate
317 * control can't acquire the mutex since it runs in Tx path.
318 * So this is racy in that case, but in the worst case, the AMPDU
319 * size limit will be wrong for a short time which is not a big
320 * issue.
321 */
4515f30f
EG		 322
323 rcu_read_lock();
324
325 chanctx_conf = rcu_dereference(vif->chanctx_conf);
326
327 if (!chanctx_conf ||
328 chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
329 rcu_read_unlock();
330 return BT_COEX_LOOSE_LUT;
331 }
332
333 ret = BT_COEX_TX_DIS_LUT;
334
39149911
EG		 335 if (mvm->cfg->bt_shared_single_ant) {
336 rcu_read_unlock();
337 return ret;
338 }
339
4515f30f
EG		 340 phy_ctx_id = *((u16 *)chanctx_conf->drv_priv);
341
342 if (mvm->last_bt_ci_cmd.primary_ch_phy_id == phy_ctx_id)
343 ret = le32_to_cpu(mvm->last_bt_notif.primary_ch_lut);
344 else if (mvm->last_bt_ci_cmd.secondary_ch_phy_id == phy_ctx_id)
345 ret = le32_to_cpu(mvm->last_bt_notif.secondary_ch_lut);
346 /* else - default = TX TX disallowed */
347
348 rcu_read_unlock();
349
350 return ret;
351}
352
931d4160
EG		 353int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
354{
03e304e4
EG		 355 struct iwl_bt_coex_cmd *bt_cmd;
356 struct iwl_host_cmd cmd = {
357 .id = BT_CONFIG,
358 .len = { sizeof(*bt_cmd), },
359 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
360 .flags = CMD_SYNC,
931d4160
EG		 361 };
362 int ret;
dac94da8
EG		 363 u32 flags;
364
365 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX))
366 return 0;
931d4160 367
03e304e4
EG		 368 bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL);
369 if (!bt_cmd)
370 return -ENOMEM;
371 cmd.data[0] = bt_cmd;
372
373 bt_cmd->max_kill = 5;
dac94da8
EG		 374 bt_cmd->bt4_antenna_isolation_thr = BT_ANTENNA_COUPLING_THRESHOLD,
375 bt_cmd->bt4_antenna_isolation = iwlwifi_mod_params.ant_coupling,
376 bt_cmd->bt4_tx_tx_delta_freq_thr = 15,
377 bt_cmd->bt4_tx_rx_max_freq0 = 15,
03e304e4 378
dac94da8 379 flags = iwlwifi_mod_params.bt_coex_active ?
931d4160 380 BT_COEX_NW : BT_COEX_DISABLE;
dac94da8
EG		 381 flags |= BT_CH_PRIMARY_EN | BT_CH_SECONDARY_EN | BT_SYNC_2_BT_DISABLE;
382 bt_cmd->flags = cpu_to_le32(flags);
931d4160 383
dac94da8 384 bt_cmd->valid_bit_msk = cpu_to_le32(BT_VALID_ENABLE |
03e304e4
EG		 385 BT_VALID_BT_PRIO_BOOST |
386 BT_VALID_MAX_KILL |
387 BT_VALID_3W_TMRS |
388 BT_VALID_KILL_ACK |
389 BT_VALID_KILL_CTS |
390 BT_VALID_REDUCED_TX_POWER |
dac94da8
EG		 391 BT_VALID_LUT |
392 BT_VALID_WIFI_RX_SW_PRIO_BOOST |
393 BT_VALID_WIFI_TX_SW_PRIO_BOOST |
dac94da8
EG		 394 BT_VALID_CORUN_LUT_20 |
395 BT_VALID_CORUN_LUT_40 |
396 BT_VALID_ANT_ISOLATION |
397 BT_VALID_ANT_ISOLATION_THRS |
398 BT_VALID_TXTX_DELTA_FREQ_THRS |
399 BT_VALID_TXRX_MAX_FREQ_0);
400
d1d5e3cd
EG		 401 if (mvm->cfg->bt_shared_single_ant)
402 memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant,
403 sizeof(iwl_single_shared_ant));
404 else
405 memcpy(&bt_cmd->decision_lut, iwl_combined_lookup,
406 sizeof(iwl_combined_lookup));
407
dac94da8
EG		 408 memcpy(&bt_cmd->bt_prio_boost, iwl_bt_prio_boost,
409 sizeof(iwl_bt_prio_boost));
410 memcpy(&bt_cmd->bt4_multiprio_lut, iwl_bt_mprio_lut,
411 sizeof(iwl_bt_mprio_lut));
03e304e4 412 bt_cmd->kill_ack_msk =
931d4160 413 cpu_to_le32(iwl_bt_ack_kill_msk[BT_KILL_MSK_DEFAULT]);
03e304e4 414 bt_cmd->kill_cts_msk =
931d4160
EG		 415 cpu_to_le32(iwl_bt_cts_kill_msk[BT_KILL_MSK_DEFAULT]);
416
2b76ef13 417 memset(&mvm->last_bt_notif, 0, sizeof(mvm->last_bt_notif));
dac94da8 418 memset(&mvm->last_bt_ci_cmd, 0, sizeof(mvm->last_bt_ci_cmd));
2b76ef13 419
03e304e4 420 ret = iwl_mvm_send_cmd(mvm, &cmd);
931d4160 421
03e304e4
EG		 422 kfree(bt_cmd);
423 return ret;
931d4160 424}
f421f9c3 425
2b76ef13
EG		 426static int iwl_mvm_bt_udpate_ctrl_kill_msk(struct iwl_mvm *mvm,
427 bool reduced_tx_power)
428{
429 enum iwl_bt_kill_msk bt_kill_msk;
03e304e4 430 struct iwl_bt_coex_cmd *bt_cmd;
2b76ef13 431 struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif;
03e304e4
EG		 432 struct iwl_host_cmd cmd = {
433 .id = BT_CONFIG,
434 .data[0] = &bt_cmd,
435 .len = { sizeof(*bt_cmd), },
436 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
437 .flags = CMD_SYNC,
438 };
439 int ret = 0;
2b76ef13
EG		 440
441 lockdep_assert_held(&mvm->mutex);
442
443 if (reduced_tx_power) {
444 /* Reduced Tx power has precedence on the type of the profile */
445 bt_kill_msk = BT_KILL_MSK_REDUCED_TXPOW;
446 } else {
447 /* Low latency BT profile is active: give higher prio to BT */
448 if (BT_MBOX_MSG(notif, 3, SCO_STATE) ||
449 BT_MBOX_MSG(notif, 3, A2DP_STATE) ||
450 BT_MBOX_MSG(notif, 3, SNIFF_STATE))
451 bt_kill_msk = BT_KILL_MSK_SCO_HID_A2DP;
452 else
453 bt_kill_msk = BT_KILL_MSK_DEFAULT;
454 }
455
456 IWL_DEBUG_COEX(mvm,
457 "Update kill_msk: %d - SCO %sactive A2DP %sactive SNIFF %sactive\n",
458 bt_kill_msk,
459 BT_MBOX_MSG(notif, 3, SCO_STATE) ? "" : "in",
460 BT_MBOX_MSG(notif, 3, A2DP_STATE) ? "" : "in",
461 BT_MBOX_MSG(notif, 3, SNIFF_STATE) ? "" : "in");
462
463 /* Don't send HCMD if there is no update */
464 if (bt_kill_msk == mvm->bt_kill_msk)
465 return 0;
466
467 mvm->bt_kill_msk = bt_kill_msk;
03e304e4
EG		 468
469 bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_KERNEL);
470 if (!bt_cmd)
471 return -ENOMEM;
472 cmd.data[0] = bt_cmd;
7352cac0 473 bt_cmd->flags = cpu_to_le32(BT_COEX_NW);
03e304e4
EG		 474
475 bt_cmd->kill_ack_msk = cpu_to_le32(iwl_bt_ack_kill_msk[bt_kill_msk]);
476 bt_cmd->kill_cts_msk = cpu_to_le32(iwl_bt_cts_kill_msk[bt_kill_msk]);
7352cac0
EG		 477 bt_cmd->valid_bit_msk |= cpu_to_le32(BT_VALID_ENABLE |
478 BT_VALID_KILL_ACK |
479 BT_VALID_KILL_CTS);
2b76ef13 480
dac94da8
EG		 481 IWL_DEBUG_COEX(mvm, "ACK Kill msk = 0x%08x, CTS Kill msk = 0x%08x\n",
482 iwl_bt_ack_kill_msk[bt_kill_msk],
483 iwl_bt_cts_kill_msk[bt_kill_msk]);
03e304e4
EG		 484
485 ret = iwl_mvm_send_cmd(mvm, &cmd);
486
487 kfree(bt_cmd);
488 return ret;
2b76ef13
EG		 489}
490
491static int iwl_mvm_bt_coex_reduced_txp(struct iwl_mvm *mvm, u8 sta_id,
492 bool enable)
493{
03e304e4
EG		 494 struct iwl_bt_coex_cmd *bt_cmd;
495 /* Send ASYNC since this can be sent from an atomic context */
496 struct iwl_host_cmd cmd = {
497 .id = BT_CONFIG,
498 .len = { sizeof(*bt_cmd), },
499 .dataflags = { IWL_HCMD_DFL_DUP, },
500 .flags = CMD_ASYNC,
2b76ef13 501 };
03e304e4 502
2b76ef13
EG		 503 struct ieee80211_sta *sta;
504 struct iwl_mvm_sta *mvmsta;
03e304e4 505 int ret;
2b76ef13 506
2b76ef13
EG		 507 if (sta_id == IWL_MVM_STATION_COUNT)
508 return 0;
509
510 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],
511 lockdep_is_held(&mvm->mutex));
22cba0c0
EG		 512
513 /* This can happen if the station has been removed right now */
514 if (IS_ERR_OR_NULL(sta))
515 return 0;
516
2b76ef13
EG		 517 mvmsta = (void *)sta->drv_priv;
518
519 /* nothing to do */
520 if (mvmsta->bt_reduced_txpower == enable)
521 return 0;
522
03e304e4
EG		 523 bt_cmd = kzalloc(sizeof(*bt_cmd), GFP_ATOMIC);
524 if (!bt_cmd)
525 return -ENOMEM;
526 cmd.data[0] = bt_cmd;
7352cac0 527 bt_cmd->flags = cpu_to_le32(BT_COEX_NW);
03e304e4 528
7352cac0
EG		 529 bt_cmd->valid_bit_msk =
530 cpu_to_le32(BT_VALID_ENABLE | BT_VALID_REDUCED_TX_POWER);
03e304e4
EG		 531 bt_cmd->bt_reduced_tx_power = sta_id;
532
2b76ef13 533 if (enable)
03e304e4 534 bt_cmd->bt_reduced_tx_power |= BT_REDUCED_TX_POWER_BIT;
2b76ef13
EG		 535
536 IWL_DEBUG_COEX(mvm, "%sable reduced Tx Power for sta %d\n",
537 enable ? "en" : "dis", sta_id);
538
539 mvmsta->bt_reduced_txpower = enable;
540
03e304e4
EG		 541 ret = iwl_mvm_send_cmd(mvm, &cmd);
542
543 kfree(bt_cmd);
544 return ret;
2b76ef13
EG		 545}
546
547struct iwl_bt_iterator_data {
7da052b8 548 struct iwl_bt_coex_profile_notif *notif;
2b76ef13
EG		 549 struct iwl_mvm *mvm;
550 u32 num_bss_ifaces;
9e511c31 551 bool reduced_tx_power;
dac94da8
EG		 552 struct ieee80211_chanctx_conf *primary;
553 struct ieee80211_chanctx_conf *secondary;
7da052b8
EG		 554};
555
f6fc5775
EG		 556static inline
557void iwl_mvm_bt_coex_enable_rssi_event(struct iwl_mvm *mvm,
558 struct ieee80211_vif *vif,
559 bool enable, int rssi)
560{
561 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
562
563 mvmvif->bf_data.last_bt_coex_event = rssi;
564 mvmvif->bf_data.bt_coex_max_thold =
565 enable ? BT_ENABLE_REDUCED_TXPOWER_THRESHOLD : 0;
566 mvmvif->bf_data.bt_coex_min_thold =
567 enable ? BT_DISABLE_REDUCED_TXPOWER_THRESHOLD : 0;
568}
569
dac94da8 570/* must be called under rcu_read_lock */
7da052b8
EG		 571static void iwl_mvm_bt_notif_iterator(void *_data, u8 *mac,
572 struct ieee80211_vif *vif)
573{
574 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2b76ef13
EG		 575 struct iwl_bt_iterator_data *data = _data;
576 struct iwl_mvm *mvm = data->mvm;
7da052b8
EG		 577 struct ieee80211_chanctx_conf *chanctx_conf;
578 enum ieee80211_smps_mode smps_mode;
2b76ef13 579 int ave_rssi;
7da052b8 580
9ee718aa 581 lockdep_assert_held(&mvm->mutex);
7da052b8 582
dac94da8
EG		 583 if (vif->type != NL80211_IFTYPE_STATION &&
584 vif->type != NL80211_IFTYPE_AP)
585 return;
7da052b8 586
7da052b8
EG		 587 smps_mode = IEEE80211_SMPS_AUTOMATIC;
588
dac94da8
EG		 589 chanctx_conf = rcu_dereference(vif->chanctx_conf);
590
591 /* If channel context is invalid or not on 2.4GHz .. */
592 if ((!chanctx_conf ||
593 chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ)) {
594 /* ... and it is an associated STATION, relax constraints */
595 if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.assoc)
596 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX,
597 smps_mode);
f6fc5775 598 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
41069b46 599 return;
dac94da8
EG		 600 }
601
602 /* SoftAP / GO will always be primary */
603 if (vif->type == NL80211_IFTYPE_AP) {
5023d966 604 if (!mvmvif->ap_ibss_active)
dac94da8
EG		 605 return;
606
607 /* the Ack / Cts kill mask must be default if AP / GO */
608 data->reduced_tx_power = false;
41069b46 609
dac94da8
EG		 610 if (chanctx_conf == data->primary)
611 return;
612
613 /* downgrade the current primary no matter what its type is */
614 data->secondary = data->primary;
615 data->primary = chanctx_conf;
9166b1ee
EG		 616 return;
617 }
618
39149911
EG		 619 data->num_bss_ifaces++;
620
dac94da8
EG		 621 /* we are now a STA / P2P Client, and take associated ones only */
622 if (!vif->bss_conf.assoc)
623 return;
624
625 /* STA / P2P Client, try to be primary if first vif */
626 if (!data->primary || data->primary == chanctx_conf)
627 data->primary = chanctx_conf;
628 else if (!data->secondary)
629 /* if secondary is not NULL, it might be a GO */
630 data->secondary = chanctx_conf;
631
da8f8363 632 if (le32_to_cpu(data->notif->bt_activity_grading) >= BT_HIGH_TRAFFIC)
7da052b8 633 smps_mode = IEEE80211_SMPS_STATIC;
da8f8363
EG		 634 else if (le32_to_cpu(data->notif->bt_activity_grading) >=
635 BT_LOW_TRAFFIC)
636 smps_mode = IEEE80211_SMPS_DYNAMIC;
7da052b8
EG		 637
638 IWL_DEBUG_COEX(data->mvm,
dac94da8 639 "mac %d: bt_status %d bt_activity_grading %d smps_req %d\n",
7da052b8 640 mvmvif->id, data->notif->bt_status,
dac94da8 641 data->notif->bt_activity_grading, smps_mode);
7da052b8 642
9ee718aa 643 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_BT_COEX, smps_mode);
2b76ef13
EG		 644
645 /* don't reduce the Tx power if in loose scheme */
39149911
EG		 646 if (iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT ||
647 mvm->cfg->bt_shared_single_ant) {
648 data->reduced_tx_power = false;
f6fc5775 649 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
2b76ef13 650 return;
39149911 651 }
2b76ef13 652
4515f30f 653 /* reduced Txpower only if BT is on, so ...*/
0af8835e 654 if (!data->notif->bt_status) {
2b76ef13
EG		 655 /* ... cancel reduced Tx power ... */
656 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
657 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
9e511c31 658 data->reduced_tx_power = false;
2b76ef13
EG		 659
660 /* ... and there is no need to get reports on RSSI any more. */
f6fc5775 661 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, false, 0);
2b76ef13
EG		 662 return;
663 }
664
911222b5
AO		 665 /* try to get the avg rssi from fw */
666 ave_rssi = mvmvif->bf_data.ave_beacon_signal;
2b76ef13
EG		 667
668 /* if the RSSI isn't valid, fake it is very low */
669 if (!ave_rssi)
670 ave_rssi = -100;
671 if (ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) {
672 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true))
673 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
674
675 /*
676 * bt_kill_msk can be BT_KILL_MSK_REDUCED_TXPOW only if all the
677 * BSS / P2P clients have rssi above threshold.
678 * We set the bt_kill_msk to BT_KILL_MSK_REDUCED_TXPOW before
679 * the iteration, if one interface's rssi isn't good enough,
680 * bt_kill_msk will be set to default values.
681 */
682 } else if (ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) {
683 if (iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, false))
684 IWL_ERR(mvm, "Couldn't send BT_CONFIG cmd\n");
685
686 /*
687 * One interface hasn't rssi above threshold, bt_kill_msk must
688 * be set to default values.
689 */
9e511c31 690 data->reduced_tx_power = false;
2b76ef13
EG		 691 }
692
693 /* Begin to monitor the RSSI: it may influence the reduced Tx power */
f6fc5775 694 iwl_mvm_bt_coex_enable_rssi_event(mvm, vif, true, ave_rssi);
7da052b8
EG		 695}
696
d37cac98 697static void iwl_mvm_bt_coex_notif_handle(struct iwl_mvm *mvm)
f421f9c3 698{
2b76ef13 699 struct iwl_bt_iterator_data data = {
7da052b8 700 .mvm = mvm,
d37cac98 701 .notif = &mvm->last_bt_notif,
9e511c31 702 .reduced_tx_power = true,
7da052b8 703 };
dac94da8
EG		 704 struct iwl_bt_coex_ci_cmd cmd = {};
705 u8 ci_bw_idx;
f421f9c3 706
dac94da8 707 rcu_read_lock();
7da052b8
EG		 708 ieee80211_iterate_active_interfaces_atomic(
709 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
710 iwl_mvm_bt_notif_iterator, &data);
711
dac94da8
EG		 712 if (data.primary) {
713 struct ieee80211_chanctx_conf *chan = data.primary;
714 if (WARN_ON(!chan->def.chan)) {
715 rcu_read_unlock();
716 return;
717 }
718
719 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
720 ci_bw_idx = 0;
721 cmd.co_run_bw_primary = 0;
722 } else {
723 cmd.co_run_bw_primary = 1;
724 if (chan->def.center_freq1 >
725 chan->def.chan->center_freq)
726 ci_bw_idx = 2;
727 else
728 ci_bw_idx = 1;
729 }
730
731 cmd.bt_primary_ci =
732 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
733 cmd.primary_ch_phy_id = *((u16 *)data.primary->drv_priv);
734 }
735
736 if (data.secondary) {
737 struct ieee80211_chanctx_conf *chan = data.secondary;
738 if (WARN_ON(!data.secondary->def.chan)) {
739 rcu_read_unlock();
740 return;
741 }
742
743 if (chan->def.width < NL80211_CHAN_WIDTH_40) {
744 ci_bw_idx = 0;
745 cmd.co_run_bw_secondary = 0;
746 } else {
747 cmd.co_run_bw_secondary = 1;
748 if (chan->def.center_freq1 >
749 chan->def.chan->center_freq)
750 ci_bw_idx = 2;
751 else
752 ci_bw_idx = 1;
753 }
754
755 cmd.bt_secondary_ci =
756 iwl_ci_mask[chan->def.chan->hw_value][ci_bw_idx];
c92f06a1 757 cmd.secondary_ch_phy_id = *((u16 *)data.secondary->drv_priv);
dac94da8
EG		 758 }
759
760 rcu_read_unlock();
761
762 /* Don't spam the fw with the same command over and over */
763 if (memcmp(&cmd, &mvm->last_bt_ci_cmd, sizeof(cmd))) {
764 if (iwl_mvm_send_cmd_pdu(mvm, BT_COEX_CI, CMD_SYNC,
765 sizeof(cmd), &cmd))
766 IWL_ERR(mvm, "Failed to send BT_CI cmd");
767 memcpy(&mvm->last_bt_ci_cmd, &cmd, sizeof(cmd));
768 }
769
2b76ef13
EG		 770 /*
771 * If there are no BSS / P2P client interfaces, reduced Tx Power is
772 * irrelevant since it is based on the RSSI coming from the beacon.
773 * Use BT_KILL_MSK_DEFAULT in that case.
774 */
9e511c31 775 data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
2b76ef13 776
9e511c31 777 if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, data.reduced_tx_power))
2b76ef13 778 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
9166b1ee
EG		 779}
780
781/* upon association, the fw will send in BT Coex notification */
782int iwl_mvm_rx_bt_coex_notif(struct iwl_mvm *mvm,
783 struct iwl_rx_cmd_buffer *rxb,
784 struct iwl_device_cmd *dev_cmd)
785{
786 struct iwl_rx_packet *pkt = rxb_addr(rxb);
787 struct iwl_bt_coex_profile_notif *notif = (void *)pkt->data;
788
789
790 IWL_DEBUG_COEX(mvm, "BT Coex Notification received\n");
dac94da8
EG		 791 IWL_DEBUG_COEX(mvm, "\tBT status: %s\n",
792 notif->bt_status ? "ON" : "OFF");
9166b1ee 793 IWL_DEBUG_COEX(mvm, "\tBT open conn %d\n", notif->bt_open_conn);
dac94da8
EG		 794 IWL_DEBUG_COEX(mvm, "\tBT ci compliance %d\n", notif->bt_ci_compliance);
795 IWL_DEBUG_COEX(mvm, "\tBT primary_ch_lut %d\n",
796 le32_to_cpu(notif->primary_ch_lut));
797 IWL_DEBUG_COEX(mvm, "\tBT secondary_ch_lut %d\n",
798 le32_to_cpu(notif->secondary_ch_lut));
799 IWL_DEBUG_COEX(mvm, "\tBT activity grading %d\n",
800 le32_to_cpu(notif->bt_activity_grading));
9166b1ee
EG		 801 IWL_DEBUG_COEX(mvm, "\tBT agg traffic load %d\n",
802 notif->bt_agg_traffic_load);
9166b1ee 803
d37cac98
EG		 804 /* remember this notification for future use: rssi fluctuations */
805 memcpy(&mvm->last_bt_notif, notif, sizeof(mvm->last_bt_notif));
806
807 iwl_mvm_bt_coex_notif_handle(mvm);
2b76ef13
EG		 808
809 /*
810 * This is an async handler for a notification, returning anything other
811 * than 0 doesn't make sense even if HCMD failed.
812 */
813 return 0;
814}
815
816static void iwl_mvm_bt_rssi_iterator(void *_data, u8 *mac,
817 struct ieee80211_vif *vif)
818{
819 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
820 struct iwl_bt_iterator_data *data = _data;
821 struct iwl_mvm *mvm = data->mvm;
822
823 struct ieee80211_sta *sta;
824 struct iwl_mvm_sta *mvmsta;
825
f6fc5775
EG		 826 struct ieee80211_chanctx_conf *chanctx_conf;
827
828 rcu_read_lock();
829 chanctx_conf = rcu_dereference(vif->chanctx_conf);
830 /* If channel context is invalid or not on 2.4GHz - don't count it */
831 if (!chanctx_conf ||
832 chanctx_conf->def.chan->band != IEEE80211_BAND_2GHZ) {
833 rcu_read_unlock();
834 return;
835 }
836 rcu_read_unlock();
837
2b76ef13
EG		 838 if (vif->type != NL80211_IFTYPE_STATION ||
839 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
840 return;
841
842 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
843 lockdep_is_held(&mvm->mutex));
56c07a9c
EG		 844
845 /* This can happen if the station has been removed right now */
846 if (IS_ERR_OR_NULL(sta))
847 return;
848
2b76ef13
EG		 849 mvmsta = (void *)sta->drv_priv;
850
8e0366f9
EG		 851 data->num_bss_ifaces++;
852
2b76ef13
EG		 853 /*
854 * This interface doesn't support reduced Tx power (because of low
855 * RSSI probably), then set bt_kill_msk to default values.
856 */
857 if (!mvmsta->bt_reduced_txpower)
9e511c31 858 data->reduced_tx_power = false;
2b76ef13
EG		 859 /* else - possibly leave it to BT_KILL_MSK_REDUCED_TXPOW */
860}
861
862void iwl_mvm_bt_rssi_event(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
863 enum ieee80211_rssi_event rssi_event)
864{
865 struct iwl_mvm_vif *mvmvif = (void *)vif->drv_priv;
2b76ef13
EG		 866 struct iwl_bt_iterator_data data = {
867 .mvm = mvm,
9e511c31 868 .reduced_tx_power = true,
2b76ef13
EG		 869 };
870 int ret;
871
3dd1cd2d 872 lockdep_assert_held(&mvm->mutex);
2b76ef13
EG		 873
874 /* Rssi update while not associated ?! */
875 if (WARN_ON_ONCE(mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
3dd1cd2d 876 return;
2b76ef13 877
4515f30f 878 /* No BT - reports should be disabled */
0af8835e 879 if (!mvm->last_bt_notif.bt_status)
3dd1cd2d 880 return;
2b76ef13
EG		 881
882 IWL_DEBUG_COEX(mvm, "RSSI for %pM is now %s\n", vif->bss_conf.bssid,
883 rssi_event == RSSI_EVENT_HIGH ? "HIGH" : "LOW");
884
885 /*
886 * Check if rssi is good enough for reduced Tx power, but not in loose
887 * scheme.
888 */
39149911 889 if (rssi_event == RSSI_EVENT_LOW || mvm->cfg->bt_shared_single_ant ||
4515f30f 890 iwl_get_coex_type(mvm, vif) == BT_COEX_LOOSE_LUT)
2b76ef13
EG		 891 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id,
892 false);
f421f9c3 893 else
2b76ef13 894 ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, true);
f421f9c3 895
2b76ef13
EG		 896 if (ret)
897 IWL_ERR(mvm, "couldn't send BT_CONFIG HCMD upon RSSI event\n");
f421f9c3 898
2b76ef13
EG		 899 ieee80211_iterate_active_interfaces_atomic(
900 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
901 iwl_mvm_bt_rssi_iterator, &data);
f421f9c3 902
2b76ef13
EG		 903 /*
904 * If there are no BSS / P2P client interfaces, reduced Tx Power is
905 * irrelevant since it is based on the RSSI coming from the beacon.
906 * Use BT_KILL_MSK_DEFAULT in that case.
907 */
9e511c31 908 data.reduced_tx_power = data.reduced_tx_power && data.num_bss_ifaces;
f421f9c3 909
9e511c31 910 if (iwl_mvm_bt_udpate_ctrl_kill_msk(mvm, data.reduced_tx_power))
2b76ef13 911 IWL_ERR(mvm, "Failed to update the ctrl_kill_msk\n");
f421f9c3 912}
9166b1ee 913
9145d151
EG		 914#define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000)
915#define LINK_QUAL_AGG_TIME_LIMIT_BT_ACT (1200)
916
917u16 iwl_mvm_bt_coex_agg_time_limit(struct iwl_mvm *mvm,
918 struct ieee80211_sta *sta)
919{
920 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
921 enum iwl_bt_coex_lut_type lut_type;
922
923 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
924 BT_LOW_TRAFFIC)
925 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
926
927 lut_type = iwl_get_coex_type(mvm, mvmsta->vif);
928
929 if (lut_type == BT_COEX_LOOSE_LUT)
930 return LINK_QUAL_AGG_TIME_LIMIT_DEF;
931
932 /* tight coex, high bt traffic, reduce AGG time limit */
933 return LINK_QUAL_AGG_TIME_LIMIT_BT_ACT;
934}
935
ffa6c707
EG		 936bool iwl_mvm_bt_coex_is_mimo_allowed(struct iwl_mvm *mvm,
937 struct ieee80211_sta *sta)
938{
939 struct iwl_mvm_sta *mvmsta = (void *)sta->drv_priv;
940
941 if (le32_to_cpu(mvm->last_bt_notif.bt_activity_grading) <
942 BT_HIGH_TRAFFIC)
943 return true;
944
945 /*
946 * In Tight, BT can't Rx while we Tx, so use both antennas since BT is
947 * already killed.
948 * In Loose, BT can Rx while we Tx, so forbid MIMO to let BT Rx while we
949 * Tx.
950 */
951 return iwl_get_coex_type(mvm, mvmsta->vif) == BT_COEX_TIGHT_LUT;
952}
953
8e484f0b 954void iwl_mvm_bt_coex_vif_change(struct iwl_mvm *mvm)
9166b1ee 955{
dac94da8
EG		 956 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWBT_COEX))
957 return;
958
d37cac98 959 iwl_mvm_bt_coex_notif_handle(mvm);
9166b1ee 960}
Linux kernel - Deliverables
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