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6#include "rs.h"
7#include "fw-api.h"
8#include "sta.h"
9#include "iwl-op-mode.h"
10#include "mvm.h"
11
12static u8 rs_fw_bw_from_sta_bw(struct ieee80211_sta *sta)
13{
14 switch (sta->bandwidth) {
15 case IEEE80211_STA_RX_BW_160:
16 return IWL_TLC_MNG_CH_WIDTH_160MHZ;
17 case IEEE80211_STA_RX_BW_80:
18 return IWL_TLC_MNG_CH_WIDTH_80MHZ;
19 case IEEE80211_STA_RX_BW_40:
20 return IWL_TLC_MNG_CH_WIDTH_40MHZ;
21 case IEEE80211_STA_RX_BW_20:
22 default:
23 return IWL_TLC_MNG_CH_WIDTH_20MHZ;
24 }
25}
26
27static u8 rs_fw_set_active_chains(u8 chains)
28{
29 u8 fw_chains = 0;
30
31 if (chains & ANT_A)
32 fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
33 if (chains & ANT_B)
34 fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
35
36 return fw_chains;
37}
38
39static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
40{
41 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
42 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
43 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
44 u8 supp = 0;
45
46 if (he_cap->has_he)
47 return 0;
48
49 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
50 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
51 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
52 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
53 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
54 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
55 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
56 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
57
58 return supp;
59}
60
61static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
62 struct ieee80211_sta *sta,
63 struct ieee80211_supported_band *sband)
64{
65 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
66 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
67 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
68 bool vht_ena = vht_cap->vht_supported;
69 u16 flags = 0;
70
71
72 if (mvm->cfg->ht_params->stbc &&
73 (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
74 if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
75 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
76 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
77 else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
78 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
79 else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
80 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
81 }
82
83 if (mvm->cfg->ht_params->ldpc &&
84 ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
85 (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
86 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
87
88
89 if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
90 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
91 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
92
93 if (sband->iftype_data && sband->iftype_data->he_cap.has_he &&
94 !(sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[1] &
95 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
96 flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
97
98 if (he_cap->has_he &&
99 (he_cap->he_cap_elem.phy_cap_info[3] &
100 IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK))
101 flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
102
103 return flags;
104}
105
106static
107int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
108 int nss)
109{
110 u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
111 (0x3 << (2 * (nss - 1)));
112 rx_mcs >>= (2 * (nss - 1));
113
114 switch (rx_mcs) {
115 case IEEE80211_VHT_MCS_SUPPORT_0_7:
116 return IWL_TLC_MNG_HT_RATE_MCS7;
117 case IEEE80211_VHT_MCS_SUPPORT_0_8:
118 return IWL_TLC_MNG_HT_RATE_MCS8;
119 case IEEE80211_VHT_MCS_SUPPORT_0_9:
120 return IWL_TLC_MNG_HT_RATE_MCS9;
121 default:
122 WARN_ON_ONCE(1);
123 break;
124 }
125
126 return 0;
127}
128
129static void
130rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
131 const struct ieee80211_sta_vht_cap *vht_cap,
132 struct iwl_tlc_config_cmd *cmd)
133{
134 u16 supp;
135 int i, highest_mcs;
136 u8 max_nss = sta->rx_nss;
137 struct ieee80211_vht_cap ieee_vht_cap = {
138 .vht_cap_info = cpu_to_le32(vht_cap->cap),
139 .supp_mcs = vht_cap->vht_mcs,
140 };
141
142
143 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
144 max_nss = 1;
145
146 for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
147 int nss = i + 1;
148
149 highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
150 if (!highest_mcs)
151 continue;
152
153 supp = BIT(highest_mcs + 1) - 1;
154 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
155 supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
156
157 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] = cpu_to_le16(supp);
158
159
160
161
162
163 if (sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
164 ieee80211_get_vht_max_nss(&ieee_vht_cap,
165 IEEE80211_VHT_CHANWIDTH_160MHZ,
166 0, true, nss) >= nss)
167 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
168 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160];
169 }
170}
171
172static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
173{
174 switch (mcs) {
175 case IEEE80211_HE_MCS_SUPPORT_0_7:
176 return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
177 case IEEE80211_HE_MCS_SUPPORT_0_9:
178 return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
179 case IEEE80211_HE_MCS_SUPPORT_0_11:
180 return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
181 case IEEE80211_HE_MCS_NOT_SUPPORTED:
182 return 0;
183 }
184
185 WARN(1, "invalid HE MCS %d\n", mcs);
186 return 0;
187}
188
189static void
190rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
191 struct ieee80211_supported_band *sband,
192 struct iwl_tlc_config_cmd *cmd)
193{
194 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
195 u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
196 u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
197 u16 tx_mcs_80 =
198 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_80);
199 u16 tx_mcs_160 =
200 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_160);
201 int i;
202 u8 nss = sta->rx_nss;
203
204
205 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
206 nss = 1;
207
208 for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
209 u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
210 u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
211 u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
212 u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
213
214
215 if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
216 _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
217 _mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
218 _tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
219 }
220 if (_mcs_80 > _tx_mcs_80)
221 _mcs_80 = _tx_mcs_80;
222 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] =
223 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
224
225
226 if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
227 _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
228 _mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
229 _tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
230 }
231 if (_mcs_160 > _tx_mcs_160)
232 _mcs_160 = _tx_mcs_160;
233 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
234 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
235 }
236}
237
238static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
239 struct ieee80211_supported_band *sband,
240 struct iwl_tlc_config_cmd *cmd)
241{
242 int i;
243 u16 supp = 0;
244 unsigned long tmp;
245 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
246 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
247 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
248
249
250 tmp = sta->supp_rates[sband->band];
251 for_each_set_bit(i, &tmp, BITS_PER_LONG)
252 supp |= BIT(sband->bitrates[i].hw_value);
253
254 cmd->non_ht_rates = cpu_to_le16(supp);
255 cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
256
257
258 if (he_cap->has_he) {
259 cmd->mode = IWL_TLC_MNG_MODE_HE;
260 rs_fw_he_set_enabled_rates(sta, sband, cmd);
261 } else if (vht_cap->vht_supported) {
262 cmd->mode = IWL_TLC_MNG_MODE_VHT;
263 rs_fw_vht_set_enabled_rates(sta, vht_cap, cmd);
264 } else if (ht_cap->ht_supported) {
265 cmd->mode = IWL_TLC_MNG_MODE_HT;
266 cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_HT_BW_NONE_160] =
267 cpu_to_le16(ht_cap->mcs.rx_mask[0]);
268
269
270 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
271 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
272 0;
273 else
274 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
275 cpu_to_le16(ht_cap->mcs.rx_mask[1]);
276 }
277}
278
279void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
280 struct iwl_rx_cmd_buffer *rxb)
281{
282 struct iwl_rx_packet *pkt = rxb_addr(rxb);
283 struct iwl_tlc_update_notif *notif;
284 struct ieee80211_sta *sta;
285 struct iwl_mvm_sta *mvmsta;
286 struct iwl_lq_sta_rs_fw *lq_sta;
287 u32 flags;
288
289 rcu_read_lock();
290
291 notif = (void *)pkt->data;
292 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
293 if (IS_ERR_OR_NULL(sta)) {
294 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
295 notif->sta_id);
296 goto out;
297 }
298
299 mvmsta = iwl_mvm_sta_from_mac80211(sta);
300
301 if (!mvmsta) {
302 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
303 notif->sta_id);
304 goto out;
305 }
306
307 flags = le32_to_cpu(notif->flags);
308
309 lq_sta = &mvmsta->lq_sta.rs_fw;
310
311 if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
312 char pretty_rate[100];
313
314 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
315 TLC_MNG_UPDATE_NOTIF, 0) < 3) {
316 rs_pretty_print_rate_v1(pretty_rate, sizeof(pretty_rate),
317 le32_to_cpu(notif->rate));
318 IWL_DEBUG_RATE(mvm,
319 "Got rate in old format. Rate: %s. Converting.\n",
320 pretty_rate);
321 lq_sta->last_rate_n_flags =
322 iwl_new_rate_from_v1(le32_to_cpu(notif->rate));
323 } else {
324 lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
325 }
326 rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
327 lq_sta->last_rate_n_flags);
328 IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
329 }
330
331 if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvmsta->orig_amsdu_len) {
332 u16 size = le32_to_cpu(notif->amsdu_size);
333 int i;
334
335 if (sta->max_amsdu_len < size) {
336
337
338
339
340
341 WARN_ON(mvmsta->orig_amsdu_len < size);
342 goto out;
343 }
344
345 mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
346 mvmsta->max_amsdu_len = size;
347 sta->max_rc_amsdu_len = mvmsta->max_amsdu_len;
348
349 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
350 if (mvmsta->amsdu_enabled & BIT(i))
351 sta->max_tid_amsdu_len[i] =
352 iwl_mvm_max_amsdu_size(mvm, sta, i);
353 else
354
355
356
357
358 sta->max_tid_amsdu_len[i] = 1;
359 }
360
361 IWL_DEBUG_RATE(mvm,
362 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
363 le32_to_cpu(notif->amsdu_size), size,
364 mvmsta->amsdu_enabled);
365 }
366out:
367 rcu_read_unlock();
368}
369
370u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta)
371{
372 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
373 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
374 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
375
376 if (mvmsta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) {
377 switch (le16_get_bits(sta->he_6ghz_capa.capa,
378 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
379 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
380 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
381 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
382 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
383 default:
384 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
385 }
386 } else
387 if (vht_cap->vht_supported) {
388 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
389 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
390 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
391 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
392 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
393 default:
394 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
395 }
396 } else if (ht_cap->ht_supported) {
397 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
398
399
400
401
402
403 return IEEE80211_MAX_MPDU_LEN_HT_BA;
404 else
405 return IEEE80211_MAX_MPDU_LEN_HT_3839;
406 }
407
408
409 return 0;
410}
411
412void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
413 enum nl80211_band band, bool update)
414{
415 struct ieee80211_hw *hw = mvm->hw;
416 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
417 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
418 u32 cmd_id = iwl_cmd_id(TLC_MNG_CONFIG_CMD, DATA_PATH_GROUP, 0);
419 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
420 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta);
421 struct iwl_tlc_config_cmd cfg_cmd = {
422 .sta_id = mvmsta->sta_id,
423 .max_ch_width = update ?
424 rs_fw_bw_from_sta_bw(sta) : RATE_MCS_CHAN_WIDTH_20,
425 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, sta, sband)),
426 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
427 .sgi_ch_width_supp = rs_fw_sgi_cw_support(sta),
428 .max_mpdu_len = cpu_to_le16(max_amsdu_len),
429 .amsdu = iwl_mvm_is_csum_supported(mvm),
430 };
431 int ret;
432 u16 cmd_size = sizeof(cfg_cmd);
433
434
435 if (iwl_fw_lookup_cmd_ver(mvm->fw, DATA_PATH_GROUP,
436 TLC_MNG_CONFIG_CMD, 0) < 3)
437 cmd_size -= 4;
438
439 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
440
441#ifdef CONFIG_IWLWIFI_DEBUGFS
442 iwl_mvm_reset_frame_stats(mvm);
443#endif
444 rs_fw_set_supp_rates(sta, sband, &cfg_cmd);
445
446
447
448
449
450 sta->max_amsdu_len = max_amsdu_len;
451
452 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
453 &cfg_cmd);
454 if (ret)
455 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
456}
457
458int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
459 bool enable)
460{
461
462 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
463 return 0;
464}
465
466void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
467{
468 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
469
470 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
471
472 lq_sta->pers.drv = mvm;
473 lq_sta->pers.sta_id = mvmsta->sta_id;
474 lq_sta->pers.chains = 0;
475 memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
476 lq_sta->pers.last_rssi = S8_MIN;
477 lq_sta->last_rate_n_flags = 0;
478
479#ifdef CONFIG_MAC80211_DEBUGFS
480 lq_sta->pers.dbg_fixed_rate = 0;
481#endif
482}
483
