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) 2017 Intel Deutschland GmbH
9 * Copyright(c) 2018 - 2020 Intel Corporation
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * The full GNU General Public License is included in this distribution
21 * in the file called COPYING.
22 *
23 * Contact Information:
24 * Intel Linux Wireless <linuxwifi@intel.com>
25 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *
27 * BSD LICENSE
28 *
29 * Copyright(c) 2017 Intel Deutschland GmbH
30 * Copyright(c) 2018 - 2020 Intel Corporation
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 *
37 * * Redistributions of source code must retain the above copyright
38 * notice, this list of conditions and the following disclaimer.
39 * * Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in
41 * the documentation and/or other materials provided with the
42 * distribution.
43 * * Neither the name Intel Corporation nor the names of its
44 * contributors may be used to endorse or promote products derived
45 * from this software without specific prior written permission.
46 *
47 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
48 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
49 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
50 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
51 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
54 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
55 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
56 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
57 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
58 *
59 *****************************************************************************/
60 #include "rs.h"
61 #include "fw-api.h"
62 #include "sta.h"
63 #include "iwl-op-mode.h"
64 #include "mvm.h"
65
rs_fw_bw_from_sta_bw(struct ieee80211_sta * sta)66 static u8 rs_fw_bw_from_sta_bw(struct ieee80211_sta *sta)
67 {
68 switch (sta->bandwidth) {
69 case IEEE80211_STA_RX_BW_160:
70 return IWL_TLC_MNG_CH_WIDTH_160MHZ;
71 case IEEE80211_STA_RX_BW_80:
72 return IWL_TLC_MNG_CH_WIDTH_80MHZ;
73 case IEEE80211_STA_RX_BW_40:
74 return IWL_TLC_MNG_CH_WIDTH_40MHZ;
75 case IEEE80211_STA_RX_BW_20:
76 default:
77 return IWL_TLC_MNG_CH_WIDTH_20MHZ;
78 }
79 }
80
rs_fw_set_active_chains(u8 chains)81 static u8 rs_fw_set_active_chains(u8 chains)
82 {
83 u8 fw_chains = 0;
84
85 if (chains & ANT_A)
86 fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
87 if (chains & ANT_B)
88 fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
89 if (chains & ANT_C)
90 WARN(false,
91 "tlc offload doesn't support antenna C. chains: 0x%x\n",
92 chains);
93
94 return fw_chains;
95 }
96
rs_fw_sgi_cw_support(struct ieee80211_sta * sta)97 static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
98 {
99 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
100 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
101 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
102 u8 supp = 0;
103
104 if (he_cap->has_he)
105 return 0;
106
107 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
108 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
109 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
110 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
111 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
112 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
113 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
114 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
115
116 return supp;
117 }
118
rs_fw_get_config_flags(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct ieee80211_supported_band * sband)119 static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
120 struct ieee80211_sta *sta,
121 struct ieee80211_supported_band *sband)
122 {
123 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
124 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
125 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
126 bool vht_ena = vht_cap->vht_supported;
127 u16 flags = 0;
128
129 if (mvm->cfg->ht_params->stbc &&
130 (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
131 if (he_cap->has_he) {
132 if (he_cap->he_cap_elem.phy_cap_info[2] &
133 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
134 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
135
136 if (he_cap->he_cap_elem.phy_cap_info[7] &
137 IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ)
138 flags |= IWL_TLC_MNG_CFG_FLAGS_HE_STBC_160MHZ_MSK;
139 } else if ((ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) ||
140 (vht_ena &&
141 (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)))
142 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
143 }
144
145 if (mvm->cfg->ht_params->ldpc &&
146 ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
147 (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
148 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
149
150 /* consider LDPC support in case of HE */
151 if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
152 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
153 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
154
155 if (sband->iftype_data && sband->iftype_data->he_cap.has_he &&
156 !(sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[1] &
157 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
158 flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
159
160 if (he_cap->has_he &&
161 (he_cap->he_cap_elem.phy_cap_info[3] &
162 IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK))
163 flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
164
165 return flags;
166 }
167
168 static
rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap * vht_cap,int nss)169 int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
170 int nss)
171 {
172 u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
173 (0x3 << (2 * (nss - 1)));
174 rx_mcs >>= (2 * (nss - 1));
175
176 switch (rx_mcs) {
177 case IEEE80211_VHT_MCS_SUPPORT_0_7:
178 return IWL_TLC_MNG_HT_RATE_MCS7;
179 case IEEE80211_VHT_MCS_SUPPORT_0_8:
180 return IWL_TLC_MNG_HT_RATE_MCS8;
181 case IEEE80211_VHT_MCS_SUPPORT_0_9:
182 return IWL_TLC_MNG_HT_RATE_MCS9;
183 default:
184 WARN_ON_ONCE(1);
185 break;
186 }
187
188 return 0;
189 }
190
191 static void
rs_fw_vht_set_enabled_rates(const struct ieee80211_sta * sta,const struct ieee80211_sta_vht_cap * vht_cap,struct iwl_tlc_config_cmd * cmd)192 rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
193 const struct ieee80211_sta_vht_cap *vht_cap,
194 struct iwl_tlc_config_cmd *cmd)
195 {
196 u16 supp;
197 int i, highest_mcs;
198 u8 max_nss = sta->rx_nss;
199 struct ieee80211_vht_cap ieee_vht_cap = {
200 .vht_cap_info = cpu_to_le32(vht_cap->cap),
201 .supp_mcs = vht_cap->vht_mcs,
202 };
203
204 /* the station support only a single receive chain */
205 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
206 max_nss = 1;
207
208 for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
209 int nss = i + 1;
210
211 highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
212 if (!highest_mcs)
213 continue;
214
215 supp = BIT(highest_mcs + 1) - 1;
216 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
217 supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
218
219 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] = cpu_to_le16(supp);
220 /*
221 * Check if VHT extended NSS indicates that the bandwidth/NSS
222 * configuration is supported - only for MCS 0 since we already
223 * decoded the MCS bits anyway ourselves.
224 */
225 if (sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
226 ieee80211_get_vht_max_nss(&ieee_vht_cap,
227 IEEE80211_VHT_CHANWIDTH_160MHZ,
228 0, true, nss) >= nss)
229 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
230 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160];
231 }
232 }
233
rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)234 static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
235 {
236 switch (mcs) {
237 case IEEE80211_HE_MCS_SUPPORT_0_7:
238 return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
239 case IEEE80211_HE_MCS_SUPPORT_0_9:
240 return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
241 case IEEE80211_HE_MCS_SUPPORT_0_11:
242 return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
243 case IEEE80211_HE_MCS_NOT_SUPPORTED:
244 return 0;
245 }
246
247 WARN(1, "invalid HE MCS %d\n", mcs);
248 return 0;
249 }
250
251 static void
rs_fw_he_set_enabled_rates(const struct ieee80211_sta * sta,struct ieee80211_supported_band * sband,struct iwl_tlc_config_cmd * cmd)252 rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
253 struct ieee80211_supported_band *sband,
254 struct iwl_tlc_config_cmd *cmd)
255 {
256 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
257 u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
258 u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
259 u16 tx_mcs_80 =
260 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_80);
261 u16 tx_mcs_160 =
262 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_160);
263 int i;
264 u8 nss = sta->rx_nss;
265
266 /* the station support only a single receive chain */
267 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
268 nss = 1;
269
270 for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
271 u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
272 u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
273 u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
274 u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
275
276 /* If one side doesn't support - mark both as not supporting */
277 if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
278 _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
279 _mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
280 _tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
281 }
282 if (_mcs_80 > _tx_mcs_80)
283 _mcs_80 = _tx_mcs_80;
284 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] =
285 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
286
287 /* If one side doesn't support - mark both as not supporting */
288 if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
289 _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
290 _mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
291 _tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
292 }
293 if (_mcs_160 > _tx_mcs_160)
294 _mcs_160 = _tx_mcs_160;
295 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
296 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
297 }
298 }
299
rs_fw_set_supp_rates(struct ieee80211_sta * sta,struct ieee80211_supported_band * sband,struct iwl_tlc_config_cmd * cmd)300 static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
301 struct ieee80211_supported_band *sband,
302 struct iwl_tlc_config_cmd *cmd)
303 {
304 int i;
305 unsigned long tmp;
306 unsigned long supp; /* must be unsigned long for for_each_set_bit */
307 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
308 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
309 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
310
311 /* non HT rates */
312 supp = 0;
313 tmp = sta->supp_rates[sband->band];
314 for_each_set_bit(i, &tmp, BITS_PER_LONG)
315 supp |= BIT(sband->bitrates[i].hw_value);
316
317 cmd->non_ht_rates = cpu_to_le16(supp);
318 cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
319
320 /* HT/VHT rates */
321 if (he_cap->has_he) {
322 cmd->mode = IWL_TLC_MNG_MODE_HE;
323 rs_fw_he_set_enabled_rates(sta, sband, cmd);
324 } else if (vht_cap->vht_supported) {
325 cmd->mode = IWL_TLC_MNG_MODE_VHT;
326 rs_fw_vht_set_enabled_rates(sta, vht_cap, cmd);
327 } else if (ht_cap->ht_supported) {
328 cmd->mode = IWL_TLC_MNG_MODE_HT;
329 cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_HT_BW_NONE_160] =
330 cpu_to_le16(ht_cap->mcs.rx_mask[0]);
331
332 /* the station support only a single receive chain */
333 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
334 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
335 0;
336 else
337 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
338 cpu_to_le16(ht_cap->mcs.rx_mask[1]);
339 }
340 }
341
iwl_mvm_tlc_update_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)342 void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
343 struct iwl_rx_cmd_buffer *rxb)
344 {
345 struct iwl_rx_packet *pkt = rxb_addr(rxb);
346 struct iwl_tlc_update_notif *notif;
347 struct ieee80211_sta *sta;
348 struct iwl_mvm_sta *mvmsta;
349 struct iwl_lq_sta_rs_fw *lq_sta;
350 u32 flags;
351
352 rcu_read_lock();
353
354 notif = (void *)pkt->data;
355 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
356 if (IS_ERR_OR_NULL(sta)) {
357 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
358 notif->sta_id);
359 goto out;
360 }
361
362 mvmsta = iwl_mvm_sta_from_mac80211(sta);
363
364 if (!mvmsta) {
365 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
366 notif->sta_id);
367 goto out;
368 }
369
370 flags = le32_to_cpu(notif->flags);
371
372 lq_sta = &mvmsta->lq_sta.rs_fw;
373
374 if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
375 char pretty_rate[100];
376 lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
377 rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
378 lq_sta->last_rate_n_flags);
379 IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
380 }
381
382 if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvmsta->orig_amsdu_len) {
383 u16 size = le32_to_cpu(notif->amsdu_size);
384 int i;
385
386 if (sta->max_amsdu_len < size) {
387 /*
388 * In debug sta->max_amsdu_len < size
389 * so also check with orig_amsdu_len which holds the
390 * original data before debugfs changed the value
391 */
392 WARN_ON(mvmsta->orig_amsdu_len < size);
393 goto out;
394 }
395
396 mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
397 mvmsta->max_amsdu_len = size;
398 sta->max_rc_amsdu_len = mvmsta->max_amsdu_len;
399
400 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
401 if (mvmsta->amsdu_enabled & BIT(i))
402 sta->max_tid_amsdu_len[i] =
403 iwl_mvm_max_amsdu_size(mvm, sta, i);
404 else
405 /*
406 * Not so elegant, but this will effectively
407 * prevent AMSDU on this TID
408 */
409 sta->max_tid_amsdu_len[i] = 1;
410 }
411
412 IWL_DEBUG_RATE(mvm,
413 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
414 le32_to_cpu(notif->amsdu_size), size,
415 mvmsta->amsdu_enabled);
416 }
417 out:
418 rcu_read_unlock();
419 }
420
rs_fw_get_max_amsdu_len(struct ieee80211_sta * sta)421 u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta)
422 {
423 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
424 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
425
426 if (vht_cap->vht_supported) {
427 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
428 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
429 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
430 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
431 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
432 default:
433 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
434 }
435 } else if (ht_cap->ht_supported) {
436 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
437 /*
438 * agg is offloaded so we need to assume that agg
439 * are enabled and max mpdu in ampdu is 4095
440 * (spec 802.11-2016 9.3.2.1)
441 */
442 return IEEE80211_MAX_MPDU_LEN_HT_BA;
443 else
444 return IEEE80211_MAX_MPDU_LEN_HT_3839;
445 }
446
447 /* in legacy mode no amsdu is enabled so return zero */
448 return 0;
449 }
450
rs_fw_rate_init(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum nl80211_band band,bool update)451 void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
452 enum nl80211_band band, bool update)
453 {
454 struct ieee80211_hw *hw = mvm->hw;
455 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
456 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
457 u32 cmd_id = iwl_cmd_id(TLC_MNG_CONFIG_CMD, DATA_PATH_GROUP, 0);
458 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
459 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta);
460 struct iwl_tlc_config_cmd cfg_cmd = {
461 .sta_id = mvmsta->sta_id,
462 .max_ch_width = update ?
463 rs_fw_bw_from_sta_bw(sta) : RATE_MCS_CHAN_WIDTH_20,
464 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, sta, sband)),
465 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
466 .sgi_ch_width_supp = rs_fw_sgi_cw_support(sta),
467 .max_mpdu_len = cpu_to_le16(max_amsdu_len),
468 .amsdu = iwl_mvm_is_csum_supported(mvm),
469 };
470 int ret;
471 u16 cmd_size = sizeof(cfg_cmd);
472
473 /* In old versions of the API the struct is 4 bytes smaller */
474 if (iwl_fw_lookup_cmd_ver(mvm->fw, DATA_PATH_GROUP,
475 TLC_MNG_CONFIG_CMD, 0) < 3)
476 cmd_size -= 4;
477
478 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
479
480 #ifdef CONFIG_IWLWIFI_DEBUGFS
481 iwl_mvm_reset_frame_stats(mvm);
482 #endif
483 rs_fw_set_supp_rates(sta, sband, &cfg_cmd);
484
485 /*
486 * since TLC offload works with one mode we can assume
487 * that only vht/ht is used and also set it as station max amsdu
488 */
489 sta->max_amsdu_len = max_amsdu_len;
490
491 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
492 &cfg_cmd);
493 if (ret)
494 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
495 }
496
rs_fw_tx_protection(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool enable)497 int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
498 bool enable)
499 {
500 /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
501 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
502 return 0;
503 }
504
iwl_mvm_rs_add_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta)505 void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
506 {
507 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
508
509 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
510
511 lq_sta->pers.drv = mvm;
512 lq_sta->pers.sta_id = mvmsta->sta_id;
513 lq_sta->pers.chains = 0;
514 memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
515 lq_sta->pers.last_rssi = S8_MIN;
516 lq_sta->last_rate_n_flags = 0;
517
518 #ifdef CONFIG_MAC80211_DEBUGFS
519 lq_sta->pers.dbg_fixed_rate = 0;
520 #endif
521 }
522