1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2017 Intel Deutschland GmbH
4 * Copyright (C) 2018-2026 Intel Corporation
5 */
6 #include "rs.h"
7 #include "fw-api.h"
8 #include "sta.h"
9 #include "iwl-op-mode.h"
10 #include "mvm.h"
11
rs_fw_bw_from_sta_bw(const struct ieee80211_link_sta * link_sta)12 static u8 rs_fw_bw_from_sta_bw(const struct ieee80211_link_sta *link_sta)
13 {
14 switch (link_sta->bandwidth) {
15 case IEEE80211_STA_RX_BW_320:
16 return IWL_TLC_MNG_CH_WIDTH_320MHZ;
17 case IEEE80211_STA_RX_BW_160:
18 return IWL_TLC_MNG_CH_WIDTH_160MHZ;
19 case IEEE80211_STA_RX_BW_80:
20 return IWL_TLC_MNG_CH_WIDTH_80MHZ;
21 case IEEE80211_STA_RX_BW_40:
22 return IWL_TLC_MNG_CH_WIDTH_40MHZ;
23 case IEEE80211_STA_RX_BW_20:
24 default:
25 return IWL_TLC_MNG_CH_WIDTH_20MHZ;
26 }
27 }
28
rs_fw_set_active_chains(u8 chains)29 static u8 rs_fw_set_active_chains(u8 chains)
30 {
31 u8 fw_chains = 0;
32
33 if (chains & ANT_A)
34 fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
35 if (chains & ANT_B)
36 fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
37
38 return fw_chains;
39 }
40
rs_fw_sgi_cw_support(struct ieee80211_link_sta * link_sta)41 static u8 rs_fw_sgi_cw_support(struct ieee80211_link_sta *link_sta)
42 {
43 struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
44 struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
45 struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
46 u8 supp = 0;
47
48 if (he_cap->has_he)
49 return 0;
50
51 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
52 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
53 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
54 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
55 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
56 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
57 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
58 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
59
60 return supp;
61 }
62
rs_fw_get_config_flags(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_link_sta * link_sta,const struct ieee80211_sta_he_cap * sband_he_cap)63 static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
64 struct ieee80211_vif *vif,
65 struct ieee80211_link_sta *link_sta,
66 const struct ieee80211_sta_he_cap *sband_he_cap)
67 {
68 struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
69 struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
70 struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
71 bool vht_ena = vht_cap->vht_supported;
72 u16 flags = 0;
73
74 /* get STBC flags */
75 if (mvm->cfg->ht_params.stbc &&
76 (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
77 if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
78 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
79 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
80 else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
81 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
82 else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
83 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
84 }
85
86 if (mvm->cfg->ht_params.ldpc &&
87 ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
88 (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
89 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
90
91 /* consider LDPC support in case of HE */
92 if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
93 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
94 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
95
96 if (sband_he_cap &&
97 !(sband_he_cap->he_cap_elem.phy_cap_info[1] &
98 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
99 flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
100
101 if (he_cap->has_he &&
102 (he_cap->he_cap_elem.phy_cap_info[3] &
103 IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK &&
104 sband_he_cap &&
105 sband_he_cap->he_cap_elem.phy_cap_info[3] &
106 IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK))
107 flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
108
109 return flags;
110 }
111
112 static
rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap * vht_cap,int nss)113 int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
114 int nss)
115 {
116 u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
117 (0x3 << (2 * (nss - 1)));
118 rx_mcs >>= (2 * (nss - 1));
119
120 switch (rx_mcs) {
121 case IEEE80211_VHT_MCS_SUPPORT_0_7:
122 return IWL_TLC_MNG_HT_RATE_MCS7;
123 case IEEE80211_VHT_MCS_SUPPORT_0_8:
124 return IWL_TLC_MNG_HT_RATE_MCS8;
125 case IEEE80211_VHT_MCS_SUPPORT_0_9:
126 return IWL_TLC_MNG_HT_RATE_MCS9;
127 default:
128 WARN_ON_ONCE(1);
129 break;
130 }
131
132 return 0;
133 }
134
135 static void
rs_fw_vht_set_enabled_rates(const struct ieee80211_link_sta * link_sta,const struct ieee80211_sta_vht_cap * vht_cap,struct iwl_tlc_config_cmd_v4 * cmd)136 rs_fw_vht_set_enabled_rates(const struct ieee80211_link_sta *link_sta,
137 const struct ieee80211_sta_vht_cap *vht_cap,
138 struct iwl_tlc_config_cmd_v4 *cmd)
139 {
140 u16 supp;
141 int i, highest_mcs;
142 u8 max_nss = link_sta->rx_nss;
143 struct ieee80211_vht_cap ieee_vht_cap = {
144 .vht_cap_info = cpu_to_le32(vht_cap->cap),
145 .supp_mcs = vht_cap->vht_mcs,
146 };
147
148 /* the station support only a single receive chain */
149 if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
150 max_nss = 1;
151
152 for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
153 int nss = i + 1;
154
155 highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
156 if (!highest_mcs)
157 continue;
158
159 supp = BIT(highest_mcs + 1) - 1;
160 if (link_sta->bandwidth == IEEE80211_STA_RX_BW_20)
161 supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
162
163 cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(supp);
164 /*
165 * Check if VHT extended NSS indicates that the bandwidth/NSS
166 * configuration is supported - only for MCS 0 since we already
167 * decoded the MCS bits anyway ourselves.
168 */
169 if (link_sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
170 ieee80211_get_vht_max_nss(&ieee_vht_cap,
171 IEEE80211_VHT_CHANWIDTH_160MHZ,
172 0, true, nss) >= nss)
173 cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
174 cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80];
175 }
176 }
177
rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)178 static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
179 {
180 switch (mcs) {
181 case IEEE80211_HE_MCS_SUPPORT_0_7:
182 return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
183 case IEEE80211_HE_MCS_SUPPORT_0_9:
184 return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
185 case IEEE80211_HE_MCS_SUPPORT_0_11:
186 return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
187 case IEEE80211_HE_MCS_NOT_SUPPORTED:
188 return 0;
189 }
190
191 WARN(1, "invalid HE MCS %d\n", mcs);
192 return 0;
193 }
194
195 static void
rs_fw_he_set_enabled_rates(const struct ieee80211_link_sta * link_sta,const struct ieee80211_sta_he_cap * sband_he_cap,struct iwl_tlc_config_cmd_v4 * cmd)196 rs_fw_he_set_enabled_rates(const struct ieee80211_link_sta *link_sta,
197 const struct ieee80211_sta_he_cap *sband_he_cap,
198 struct iwl_tlc_config_cmd_v4 *cmd)
199 {
200 const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
201 u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
202 u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
203 u16 tx_mcs_80 = le16_to_cpu(sband_he_cap->he_mcs_nss_supp.tx_mcs_80);
204 u16 tx_mcs_160 = le16_to_cpu(sband_he_cap->he_mcs_nss_supp.tx_mcs_160);
205 int i;
206 u8 nss = link_sta->rx_nss;
207
208 /* the station support only a single receive chain */
209 if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
210 nss = 1;
211
212 for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
213 u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
214 u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
215 u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
216 u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
217
218 /* If one side doesn't support - mark both as not supporting */
219 if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
220 _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
221 _mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
222 _tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
223 }
224 if (_mcs_80 > _tx_mcs_80)
225 _mcs_80 = _tx_mcs_80;
226 cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] =
227 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
228
229 /* If one side doesn't support - mark both as not supporting */
230 if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
231 _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
232 _mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
233 _tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
234 }
235 if (_mcs_160 > _tx_mcs_160)
236 _mcs_160 = _tx_mcs_160;
237 cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
238 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
239 }
240 }
241
rs_fw_eht_max_nss(u8 rx_nss,u8 tx_nss)242 static u8 rs_fw_eht_max_nss(u8 rx_nss, u8 tx_nss)
243 {
244 u8 tx = u8_get_bits(tx_nss, IEEE80211_EHT_MCS_NSS_TX);
245 u8 rx = u8_get_bits(rx_nss, IEEE80211_EHT_MCS_NSS_RX);
246 /* the max nss that can be used,
247 * is the min with our tx capa and the peer rx capa.
248 */
249 return min(tx, rx);
250 }
251
252 #define MAX_NSS_MCS(mcs_num, rx, tx) \
253 rs_fw_eht_max_nss((rx)->rx_tx_mcs ##mcs_num## _max_nss, \
254 (tx)->rx_tx_mcs ##mcs_num## _max_nss)
255
rs_fw_set_eht_mcs_nss(__le16 ht_rates[][3],enum IWL_TLC_MCS_PER_BW bw,u8 max_nss,u16 mcs_msk)256 static void rs_fw_set_eht_mcs_nss(__le16 ht_rates[][3],
257 enum IWL_TLC_MCS_PER_BW bw,
258 u8 max_nss, u16 mcs_msk)
259 {
260 if (max_nss >= 2)
261 ht_rates[IWL_TLC_NSS_2][bw] |= cpu_to_le16(mcs_msk);
262
263 if (max_nss >= 1)
264 ht_rates[IWL_TLC_NSS_1][bw] |= cpu_to_le16(mcs_msk);
265 }
266
267 static const
268 struct ieee80211_eht_mcs_nss_supp_bw *
rs_fw_rs_mcs2eht_mcs(enum IWL_TLC_MCS_PER_BW bw,const struct ieee80211_eht_mcs_nss_supp * eht_mcs)269 rs_fw_rs_mcs2eht_mcs(enum IWL_TLC_MCS_PER_BW bw,
270 const struct ieee80211_eht_mcs_nss_supp *eht_mcs)
271 {
272 switch (bw) {
273 case IWL_TLC_MCS_PER_BW_80:
274 return &eht_mcs->bw._80;
275 case IWL_TLC_MCS_PER_BW_160:
276 return &eht_mcs->bw._160;
277 case IWL_TLC_MCS_PER_BW_320:
278 return &eht_mcs->bw._320;
279 default:
280 return NULL;
281 }
282 }
283
284 static void
rs_fw_eht_set_enabled_rates(struct ieee80211_vif * vif,const struct ieee80211_link_sta * link_sta,const struct ieee80211_sta_he_cap * sband_he_cap,const struct ieee80211_sta_eht_cap * sband_eht_cap,struct iwl_tlc_config_cmd_v4 * cmd)285 rs_fw_eht_set_enabled_rates(struct ieee80211_vif *vif,
286 const struct ieee80211_link_sta *link_sta,
287 const struct ieee80211_sta_he_cap *sband_he_cap,
288 const struct ieee80211_sta_eht_cap *sband_eht_cap,
289 struct iwl_tlc_config_cmd_v4 *cmd)
290 {
291 /* peer RX mcs capa */
292 const struct ieee80211_eht_mcs_nss_supp *eht_rx_mcs =
293 &link_sta->eht_cap.eht_mcs_nss_supp;
294 /* our TX mcs capa */
295 const struct ieee80211_eht_mcs_nss_supp *eht_tx_mcs =
296 &sband_eht_cap->eht_mcs_nss_supp;
297
298 enum IWL_TLC_MCS_PER_BW bw;
299 struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_rx_20;
300 struct ieee80211_eht_mcs_nss_supp_20mhz_only mcs_tx_20;
301
302 /* peer is 20Mhz only */
303 if (vif->type == NL80211_IFTYPE_AP &&
304 !(link_sta->he_cap.he_cap_elem.phy_cap_info[0] &
305 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
306 mcs_rx_20 = eht_rx_mcs->only_20mhz;
307 } else {
308 mcs_rx_20.rx_tx_mcs7_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss;
309 mcs_rx_20.rx_tx_mcs9_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs9_max_nss;
310 mcs_rx_20.rx_tx_mcs11_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs11_max_nss;
311 mcs_rx_20.rx_tx_mcs13_max_nss = eht_rx_mcs->bw._80.rx_tx_mcs13_max_nss;
312 }
313
314 /* nic is 20Mhz only */
315 if (!(sband_he_cap->he_cap_elem.phy_cap_info[0] &
316 IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_MASK_ALL)) {
317 mcs_tx_20 = eht_tx_mcs->only_20mhz;
318 } else {
319 mcs_tx_20.rx_tx_mcs7_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss;
320 mcs_tx_20.rx_tx_mcs9_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs9_max_nss;
321 mcs_tx_20.rx_tx_mcs11_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs11_max_nss;
322 mcs_tx_20.rx_tx_mcs13_max_nss = eht_tx_mcs->bw._80.rx_tx_mcs13_max_nss;
323 }
324
325 /* rates for 20/40/80 bw */
326 bw = IWL_TLC_MCS_PER_BW_80;
327 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
328 MAX_NSS_MCS(7, &mcs_rx_20, &mcs_tx_20), GENMASK(7, 0));
329 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
330 MAX_NSS_MCS(9, &mcs_rx_20, &mcs_tx_20), GENMASK(9, 8));
331 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
332 MAX_NSS_MCS(11, &mcs_rx_20, &mcs_tx_20), GENMASK(11, 10));
333 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
334 MAX_NSS_MCS(13, &mcs_rx_20, &mcs_tx_20), GENMASK(13, 12));
335
336 /* rate for 160/320 bw */
337 for (bw = IWL_TLC_MCS_PER_BW_160; bw <= IWL_TLC_MCS_PER_BW_320; bw++) {
338 const struct ieee80211_eht_mcs_nss_supp_bw *mcs_rx =
339 rs_fw_rs_mcs2eht_mcs(bw, eht_rx_mcs);
340 const struct ieee80211_eht_mcs_nss_supp_bw *mcs_tx =
341 rs_fw_rs_mcs2eht_mcs(bw, eht_tx_mcs);
342
343 /* got unsupported index for bw */
344 if (!mcs_rx || !mcs_tx)
345 continue;
346
347 /* break out if we don't support the bandwidth */
348 if (cmd->max_ch_width < (bw + IWL_TLC_MNG_CH_WIDTH_80MHZ))
349 break;
350
351 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
352 MAX_NSS_MCS(9, mcs_rx, mcs_tx), GENMASK(9, 0));
353 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
354 MAX_NSS_MCS(11, mcs_rx, mcs_tx), GENMASK(11, 10));
355 rs_fw_set_eht_mcs_nss(cmd->ht_rates, bw,
356 MAX_NSS_MCS(13, mcs_rx, mcs_tx), GENMASK(13, 12));
357 }
358
359 /* the station support only a single receive chain */
360 if (link_sta->smps_mode == IEEE80211_SMPS_STATIC ||
361 link_sta->rx_nss < 2)
362 memset(cmd->ht_rates[IWL_TLC_NSS_2], 0,
363 sizeof(cmd->ht_rates[IWL_TLC_NSS_2]));
364 }
365
rs_fw_set_supp_rates(struct ieee80211_vif * vif,struct ieee80211_link_sta * link_sta,struct ieee80211_supported_band * sband,const struct ieee80211_sta_he_cap * sband_he_cap,const struct ieee80211_sta_eht_cap * sband_eht_cap,struct iwl_tlc_config_cmd_v4 * cmd)366 static void rs_fw_set_supp_rates(struct ieee80211_vif *vif,
367 struct ieee80211_link_sta *link_sta,
368 struct ieee80211_supported_band *sband,
369 const struct ieee80211_sta_he_cap *sband_he_cap,
370 const struct ieee80211_sta_eht_cap *sband_eht_cap,
371 struct iwl_tlc_config_cmd_v4 *cmd)
372 {
373 int i;
374 u16 supp = 0;
375 unsigned long tmp; /* must be unsigned long for for_each_set_bit */
376 const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
377 const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
378 const struct ieee80211_sta_he_cap *he_cap = &link_sta->he_cap;
379
380 /* non HT rates */
381 tmp = link_sta->supp_rates[sband->band];
382 for_each_set_bit(i, &tmp, BITS_PER_LONG)
383 supp |= BIT(sband->bitrates[i].hw_value);
384
385 cmd->non_ht_rates = cpu_to_le16(supp);
386 cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
387
388 /* HT/VHT rates */
389 if (link_sta->eht_cap.has_eht && sband_he_cap && sband_eht_cap) {
390 cmd->mode = IWL_TLC_MNG_MODE_EHT;
391 rs_fw_eht_set_enabled_rates(vif, link_sta, sband_he_cap,
392 sband_eht_cap, cmd);
393 } else if (he_cap->has_he && sband_he_cap) {
394 cmd->mode = IWL_TLC_MNG_MODE_HE;
395 rs_fw_he_set_enabled_rates(link_sta, sband_he_cap, cmd);
396 } else if (vht_cap->vht_supported) {
397 cmd->mode = IWL_TLC_MNG_MODE_VHT;
398 rs_fw_vht_set_enabled_rates(link_sta, vht_cap, cmd);
399 } else if (ht_cap->ht_supported) {
400 cmd->mode = IWL_TLC_MNG_MODE_HT;
401 cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_MCS_PER_BW_80] =
402 cpu_to_le16(ht_cap->mcs.rx_mask[0]);
403
404 /* the station support only a single receive chain */
405 if (link_sta->smps_mode == IEEE80211_SMPS_STATIC)
406 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
407 0;
408 else
409 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
410 cpu_to_le16(ht_cap->mcs.rx_mask[1]);
411 }
412 }
413
iwl_mvm_tlc_update_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)414 void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
415 struct iwl_rx_cmd_buffer *rxb)
416 {
417 struct iwl_rx_packet *pkt = rxb_addr(rxb);
418 struct iwl_tlc_update_notif *notif;
419 struct ieee80211_sta *sta;
420 struct ieee80211_link_sta *link_sta;
421 struct iwl_mvm_sta *mvmsta;
422 struct iwl_mvm_link_sta *mvm_link_sta;
423 struct iwl_lq_sta_rs_fw *lq_sta;
424 u32 flags;
425
426 notif = (void *)pkt->data;
427 if (IWL_FW_CHECK(mvm, notif->sta_id >= mvm->fw->ucode_capa.num_stations,
428 "Invalid sta id (%d) in TLC notification\n",
429 notif->sta_id))
430 return;
431
432 rcu_read_lock();
433
434 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[notif->sta_id]);
435 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
436 if (IS_ERR_OR_NULL(sta) || !link_sta) {
437 /* can happen in remove station flow where mvm removed internally
438 * the station before removing from FW
439 */
440 IWL_DEBUG_RATE(mvm,
441 "Invalid mvm RCU pointer for sta id (%d) in TLC notification\n",
442 notif->sta_id);
443 goto out;
444 }
445
446 mvmsta = iwl_mvm_sta_from_mac80211(sta);
447
448 flags = le32_to_cpu(notif->flags);
449
450 mvm_link_sta = rcu_dereference(mvmsta->link[link_sta->link_id]);
451 if (!mvm_link_sta) {
452 IWL_DEBUG_RATE(mvm,
453 "Invalid mvmsta RCU pointer for link (%d) of sta id (%d) in TLC notification\n",
454 link_sta->link_id, notif->sta_id);
455 goto out;
456 }
457 lq_sta = &mvm_link_sta->lq_sta.rs_fw;
458
459 if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
460 char pretty_rate[100];
461
462 lq_sta->last_rate_n_flags =
463 iwl_mvm_v3_rate_from_fw(notif->rate, mvm->fw_rates_ver);
464 rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
465 lq_sta->last_rate_n_flags);
466 IWL_DEBUG_RATE(mvm, "rate: %s\n", pretty_rate);
467 }
468
469 if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvm_link_sta->orig_amsdu_len) {
470 u32 enabled = le32_to_cpu(notif->amsdu_enabled);
471 u16 size = le32_to_cpu(notif->amsdu_size);
472 int i;
473
474 if (size < 2000) {
475 size = 0;
476 enabled = 0;
477 }
478
479 if (link_sta->agg.max_amsdu_len < size) {
480 /*
481 * In debug link_sta->agg.max_amsdu_len < size
482 * so also check with orig_amsdu_len which holds the
483 * original data before debugfs changed the value
484 */
485 WARN_ON(mvm_link_sta->orig_amsdu_len < size);
486 goto out;
487 }
488
489 mvmsta->amsdu_enabled = enabled;
490 mvmsta->max_amsdu_len = size;
491 link_sta->agg.max_rc_amsdu_len = mvmsta->max_amsdu_len;
492
493 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
494 if (mvmsta->amsdu_enabled & BIT(i))
495 link_sta->agg.max_tid_amsdu_len[i] =
496 iwl_mvm_max_amsdu_size(mvm, sta, i);
497 else
498 /*
499 * Not so elegant, but this will effectively
500 * prevent AMSDU on this TID
501 */
502 link_sta->agg.max_tid_amsdu_len[i] = 1;
503 }
504
505 ieee80211_sta_recalc_aggregates(sta);
506
507 IWL_DEBUG_RATE(mvm,
508 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
509 le32_to_cpu(notif->amsdu_size), size,
510 mvmsta->amsdu_enabled);
511 }
512 out:
513 rcu_read_unlock();
514 }
515
rs_fw_get_max_amsdu_len(struct ieee80211_sta * sta,struct ieee80211_bss_conf * link_conf,struct ieee80211_link_sta * link_sta)516 u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta,
517 struct ieee80211_bss_conf *link_conf,
518 struct ieee80211_link_sta *link_sta)
519 {
520 const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
521 const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
522 const struct ieee80211_sta_eht_cap *eht_cap = &link_sta->eht_cap;
523
524 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan))
525 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
526
527 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) {
528 switch (le16_get_bits(link_sta->he_6ghz_capa.capa,
529 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
530 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
531 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
532 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
533 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
534 default:
535 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
536 }
537 } else if (link_conf->chanreq.oper.chan->band == NL80211_BAND_2GHZ &&
538 eht_cap->has_eht) {
539 switch (u8_get_bits(eht_cap->eht_cap_elem.mac_cap_info[0],
540 IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK)) {
541 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
542 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
543 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
544 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
545 default:
546 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
547 }
548 } else if (vht_cap->vht_supported) {
549 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
550 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
551 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
552 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
553 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
554 default:
555 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
556 }
557 } else if (ht_cap->ht_supported) {
558 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
559 /*
560 * agg is offloaded so we need to assume that agg
561 * are enabled and max mpdu in ampdu is 4095
562 * (spec 802.11-2016 9.3.2.1)
563 */
564 return IEEE80211_MAX_MPDU_LEN_HT_BA;
565 else
566 return IEEE80211_MAX_MPDU_LEN_HT_3839;
567 }
568
569 /* in legacy mode no amsdu is enabled so return zero */
570 return 0;
571 }
572
iwl_mvm_rs_fw_rate_init(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_sta * sta,struct ieee80211_bss_conf * link_conf,struct ieee80211_link_sta * link_sta,enum nl80211_band band)573 void iwl_mvm_rs_fw_rate_init(struct iwl_mvm *mvm,
574 struct ieee80211_vif *vif,
575 struct ieee80211_sta *sta,
576 struct ieee80211_bss_conf *link_conf,
577 struct ieee80211_link_sta *link_sta,
578 enum nl80211_band band)
579 {
580 struct ieee80211_hw *hw = mvm->hw;
581 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
582 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD);
583 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
584 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta, link_conf, link_sta);
585 const struct ieee80211_sta_he_cap *sband_he_cap =
586 ieee80211_get_he_iftype_cap_vif(sband, vif);
587 const struct ieee80211_sta_eht_cap *sband_eht_cap =
588 ieee80211_get_eht_iftype_cap_vif(sband, vif);
589 struct iwl_mvm_link_sta *mvm_link_sta;
590 struct iwl_lq_sta_rs_fw *lq_sta;
591 struct iwl_tlc_config_cmd_v4 cfg_cmd = {
592 .max_ch_width = mvmsta->authorized ?
593 rs_fw_bw_from_sta_bw(link_sta) : IWL_TLC_MNG_CH_WIDTH_20MHZ,
594 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, vif, link_sta,
595 sband_he_cap)),
596 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
597 .sgi_ch_width_supp = rs_fw_sgi_cw_support(link_sta),
598 .max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ?
599 cpu_to_le16(max_amsdu_len) : 0,
600 };
601 unsigned int link_id = link_conf->link_id;
602 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
603 int cmd_ver;
604 int ret;
605
606 /* Enable extra EHT LTF if there's mutual support by AP and client */
607 if (sband_eht_cap &&
608 sband_eht_cap->eht_cap_elem.phy_cap_info[5] &
609 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF &&
610 link_sta->eht_cap.has_eht &&
611 link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] &
612 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) {
613 IWL_DEBUG_RATE(mvm, "Set support for Extra EHT LTF\n");
614 cfg_cmd.flags |=
615 cpu_to_le16(IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK);
616 }
617
618 rcu_read_lock();
619 mvm_link_sta = rcu_dereference(mvmsta->link[link_id]);
620 if (WARN_ON_ONCE(!mvm_link_sta)) {
621 rcu_read_unlock();
622 return;
623 }
624
625 cfg_cmd.sta_id = mvm_link_sta->sta_id;
626
627 lq_sta = &mvm_link_sta->lq_sta.rs_fw;
628 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
629
630 rcu_read_unlock();
631
632 #ifdef CONFIG_IWLWIFI_DEBUGFS
633 iwl_mvm_reset_frame_stats(mvm);
634 #endif
635 rs_fw_set_supp_rates(vif, link_sta, sband,
636 sband_he_cap, sband_eht_cap,
637 &cfg_cmd);
638
639 /*
640 * since TLC offload works with one mode we can assume
641 * that only vht/ht is used and also set it as station max amsdu
642 */
643 link_sta->agg.max_amsdu_len = max_amsdu_len;
644 ieee80211_sta_recalc_aggregates(sta);
645
646 cfg_cmd.max_tx_op = cpu_to_le16(mvmvif->max_tx_op);
647
648 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 0);
649 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",
650 cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode);
651 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n",
652 cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags);
653 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n",
654 cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op);
655 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n",
656 cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]);
657 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n",
658 cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]);
659 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n",
660 cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]);
661 if (cmd_ver == 4) {
662 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC,
663 sizeof(cfg_cmd), &cfg_cmd);
664 } else if (cmd_ver < 4) {
665 struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = {
666 .sta_id = cfg_cmd.sta_id,
667 .max_ch_width = cfg_cmd.max_ch_width,
668 .mode = cfg_cmd.mode,
669 .chains = cfg_cmd.chains,
670 .amsdu = !!cfg_cmd.max_mpdu_len,
671 .flags = cfg_cmd.flags,
672 .non_ht_rates = cfg_cmd.non_ht_rates,
673 .ht_rates[0][0] = cfg_cmd.ht_rates[0][0],
674 .ht_rates[0][1] = cfg_cmd.ht_rates[0][1],
675 .ht_rates[1][0] = cfg_cmd.ht_rates[1][0],
676 .ht_rates[1][1] = cfg_cmd.ht_rates[1][1],
677 .sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp,
678 .max_mpdu_len = cfg_cmd.max_mpdu_len,
679 };
680
681 u16 cmd_size = sizeof(cfg_cmd_v3);
682
683 /* In old versions of the API the struct is 4 bytes smaller */
684 if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 0) < 3)
685 cmd_size -= 4;
686
687 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
688 &cfg_cmd_v3);
689 } else {
690 ret = -EINVAL;
691 }
692
693 if (ret)
694 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
695 }
696
rs_fw_tx_protection(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool enable)697 int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
698 bool enable)
699 {
700 /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
701 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
702 return 0;
703 }
704
iwl_mvm_rs_add_sta_link(struct iwl_mvm * mvm,struct iwl_mvm_link_sta * link_sta)705 void iwl_mvm_rs_add_sta_link(struct iwl_mvm *mvm,
706 struct iwl_mvm_link_sta *link_sta)
707 {
708 struct iwl_lq_sta_rs_fw *lq_sta;
709
710 lq_sta = &link_sta->lq_sta.rs_fw;
711
712 lq_sta->pers.drv = mvm;
713 lq_sta->pers.sta_id = link_sta->sta_id;
714 lq_sta->pers.chains = 0;
715 memset(lq_sta->pers.chain_signal, 0,
716 sizeof(lq_sta->pers.chain_signal));
717 lq_sta->pers.last_rssi = S8_MIN;
718 lq_sta->last_rate_n_flags = 0;
719
720 #ifdef CONFIG_MAC80211_DEBUGFS
721 lq_sta->pers.dbg_fixed_rate = 0;
722 #endif
723 }
724
iwl_mvm_rs_add_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta)725 void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
726 {
727 unsigned int link_id;
728
729 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
730
731 for (link_id = 0; link_id < ARRAY_SIZE(mvmsta->link); link_id++) {
732 struct iwl_mvm_link_sta *link =
733 rcu_dereference_protected(mvmsta->link[link_id],
734 lockdep_is_held(&mvm->mutex));
735 if (!link)
736 continue;
737
738 iwl_mvm_rs_add_sta_link(mvm, link);
739 }
740 }
741