1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2017 Intel Deutschland GmbH
4 * Copyright (C) 2018-2023 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 rcu_read_lock();
427
428 notif = (void *)pkt->data;
429 link_sta = rcu_dereference(mvm->fw_id_to_link_sta[notif->sta_id]);
430 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
431 if (IS_ERR_OR_NULL(sta) || !link_sta) {
432 /* can happen in remove station flow where mvm removed internally
433 * the station before removing from FW
434 */
435 IWL_DEBUG_RATE(mvm,
436 "Invalid mvm RCU pointer for sta id (%d) in TLC notification\n",
437 notif->sta_id);
438 goto out;
439 }
440
441 mvmsta = iwl_mvm_sta_from_mac80211(sta);
442
443 if (!mvmsta) {
444 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
445 notif->sta_id);
446 goto out;
447 }
448
449 flags = le32_to_cpu(notif->flags);
450
451 mvm_link_sta = rcu_dereference(mvmsta->link[link_sta->link_id]);
452 if (!mvm_link_sta) {
453 IWL_DEBUG_RATE(mvm,
454 "Invalid mvmsta RCU pointer for link (%d) of sta id (%d) in TLC notification\n",
455 link_sta->link_id, notif->sta_id);
456 goto out;
457 }
458 lq_sta = &mvm_link_sta->lq_sta.rs_fw;
459
460 if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
461 char pretty_rate[100];
462
463 if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
464 TLC_MNG_UPDATE_NOTIF, 0) < 3) {
465 rs_pretty_print_rate_v1(pretty_rate,
466 sizeof(pretty_rate),
467 le32_to_cpu(notif->rate));
468 IWL_DEBUG_RATE(mvm,
469 "Got rate in old format. Rate: %s. Converting.\n",
470 pretty_rate);
471 lq_sta->last_rate_n_flags =
472 iwl_new_rate_from_v1(le32_to_cpu(notif->rate));
473 } else {
474 lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
475 }
476 rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
477 lq_sta->last_rate_n_flags);
478 IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
479 }
480
481 if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvm_link_sta->orig_amsdu_len) {
482 u16 size = le32_to_cpu(notif->amsdu_size);
483 int i;
484
485 if (link_sta->agg.max_amsdu_len < size) {
486 /*
487 * In debug link_sta->agg.max_amsdu_len < size
488 * so also check with orig_amsdu_len which holds the
489 * original data before debugfs changed the value
490 */
491 WARN_ON(mvm_link_sta->orig_amsdu_len < size);
492 goto out;
493 }
494
495 mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
496 mvmsta->max_amsdu_len = size;
497 link_sta->agg.max_rc_amsdu_len = mvmsta->max_amsdu_len;
498
499 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
500 if (mvmsta->amsdu_enabled & BIT(i))
501 link_sta->agg.max_tid_amsdu_len[i] =
502 iwl_mvm_max_amsdu_size(mvm, sta, i);
503 else
504 /*
505 * Not so elegant, but this will effectively
506 * prevent AMSDU on this TID
507 */
508 link_sta->agg.max_tid_amsdu_len[i] = 1;
509 }
510
511 IWL_DEBUG_RATE(mvm,
512 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
513 le32_to_cpu(notif->amsdu_size), size,
514 mvmsta->amsdu_enabled);
515 }
516 out:
517 rcu_read_unlock();
518 }
519
rs_fw_get_max_amsdu_len(struct ieee80211_sta * sta,struct ieee80211_bss_conf * link_conf,struct ieee80211_link_sta * link_sta)520 u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta,
521 struct ieee80211_bss_conf *link_conf,
522 struct ieee80211_link_sta *link_sta)
523 {
524 #if defined(__linux__)
525 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
526 #endif
527 const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;
528 const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;
529 const struct ieee80211_sta_eht_cap *eht_cap = &link_sta->eht_cap;
530
531 if (WARN_ON_ONCE(!link_conf->chandef.chan))
532 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
533
534 if (link_conf->chandef.chan->band == NL80211_BAND_6GHZ) {
535 switch (le16_get_bits(link_sta->he_6ghz_capa.capa,
536 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
537 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
538 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
539 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
540 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
541 default:
542 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
543 }
544 } else if (link_conf->chandef.chan->band == NL80211_BAND_2GHZ &&
545 eht_cap->has_eht) {
546 switch (u8_get_bits(eht_cap->eht_cap_elem.mac_cap_info[0],
547 IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK)) {
548 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:
549 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
550 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:
551 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
552 default:
553 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
554 }
555 } else if (vht_cap->vht_supported) {
556 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
557 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
558 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
559 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
560 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
561 default:
562 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
563 }
564 } else if (ht_cap->ht_supported) {
565 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
566 /*
567 * agg is offloaded so we need to assume that agg
568 * are enabled and max mpdu in ampdu is 4095
569 * (spec 802.11-2016 9.3.2.1)
570 */
571 return IEEE80211_MAX_MPDU_LEN_HT_BA;
572 else
573 return IEEE80211_MAX_MPDU_LEN_HT_3839;
574 }
575
576 /* in legacy mode no amsdu is enabled so return zero */
577 return 0;
578 }
579
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)580 void iwl_mvm_rs_fw_rate_init(struct iwl_mvm *mvm,
581 struct ieee80211_vif *vif,
582 struct ieee80211_sta *sta,
583 struct ieee80211_bss_conf *link_conf,
584 struct ieee80211_link_sta *link_sta,
585 enum nl80211_band band)
586 {
587 struct ieee80211_hw *hw = mvm->hw;
588 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
589 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD);
590 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
591 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta, link_conf, link_sta);
592 const struct ieee80211_sta_he_cap *sband_he_cap =
593 ieee80211_get_he_iftype_cap_vif(sband, vif);
594 const struct ieee80211_sta_eht_cap *sband_eht_cap =
595 ieee80211_get_eht_iftype_cap_vif(sband, vif);
596 struct iwl_mvm_link_sta *mvm_link_sta;
597 struct iwl_lq_sta_rs_fw *lq_sta;
598 struct iwl_tlc_config_cmd_v4 cfg_cmd = {
599 .max_ch_width = mvmsta->authorized ?
600 rs_fw_bw_from_sta_bw(link_sta) : IWL_TLC_MNG_CH_WIDTH_20MHZ,
601 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, vif, link_sta,
602 sband_he_cap)),
603 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
604 .sgi_ch_width_supp = rs_fw_sgi_cw_support(link_sta),
605 .max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ?
606 cpu_to_le16(max_amsdu_len) : 0,
607 };
608 unsigned int link_id = link_conf->link_id;
609 int cmd_ver;
610 int ret;
611
612 /* Enable external EHT LTF only for GL device and if there's
613 * mutual support by AP and client
614 */
615 if (CSR_HW_REV_TYPE(mvm->trans->hw_rev) == IWL_CFG_MAC_TYPE_GL &&
616 sband_eht_cap &&
617 sband_eht_cap->eht_cap_elem.phy_cap_info[5] &
618 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF &&
619 link_sta->eht_cap.has_eht &&
620 link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] &
621 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) {
622 IWL_DEBUG_RATE(mvm, "Set support for Extra EHT LTF\n");
623 cfg_cmd.flags |=
624 cpu_to_le16(IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK);
625 }
626
627 rcu_read_lock();
628 mvm_link_sta = rcu_dereference(mvmsta->link[link_id]);
629 if (WARN_ON_ONCE(!mvm_link_sta)) {
630 rcu_read_unlock();
631 return;
632 }
633
634 cfg_cmd.sta_id = mvm_link_sta->sta_id;
635
636 lq_sta = &mvm_link_sta->lq_sta.rs_fw;
637 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
638
639 rcu_read_unlock();
640
641 #ifdef CONFIG_IWLWIFI_DEBUGFS
642 iwl_mvm_reset_frame_stats(mvm);
643 #endif
644 rs_fw_set_supp_rates(vif, link_sta, sband,
645 sband_he_cap, sband_eht_cap,
646 &cfg_cmd);
647
648 /*
649 * since TLC offload works with one mode we can assume
650 * that only vht/ht is used and also set it as station max amsdu
651 */
652 sta->deflink.agg.max_amsdu_len = max_amsdu_len;
653
654 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
655 WIDE_ID(DATA_PATH_GROUP,
656 TLC_MNG_CONFIG_CMD),
657 0);
658 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",
659 cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode);
660 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n",
661 cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags);
662 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n",
663 cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op);
664 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n",
665 cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]);
666 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n",
667 cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]);
668 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n",
669 cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]);
670 if (cmd_ver == 4) {
671 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC,
672 sizeof(cfg_cmd), &cfg_cmd);
673 } else if (cmd_ver < 4) {
674 struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = {
675 .sta_id = cfg_cmd.sta_id,
676 .max_ch_width = cfg_cmd.max_ch_width,
677 .mode = cfg_cmd.mode,
678 .chains = cfg_cmd.chains,
679 .amsdu = !!cfg_cmd.max_mpdu_len,
680 .flags = cfg_cmd.flags,
681 .non_ht_rates = cfg_cmd.non_ht_rates,
682 .ht_rates[0][0] = cfg_cmd.ht_rates[0][0],
683 .ht_rates[0][1] = cfg_cmd.ht_rates[0][1],
684 .ht_rates[1][0] = cfg_cmd.ht_rates[1][0],
685 .ht_rates[1][1] = cfg_cmd.ht_rates[1][1],
686 .sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp,
687 .max_mpdu_len = cfg_cmd.max_mpdu_len,
688 };
689
690 u16 cmd_size = sizeof(cfg_cmd_v3);
691
692 /* In old versions of the API the struct is 4 bytes smaller */
693 if (iwl_fw_lookup_cmd_ver(mvm->fw,
694 WIDE_ID(DATA_PATH_GROUP,
695 TLC_MNG_CONFIG_CMD), 0) < 3)
696 cmd_size -= 4;
697
698 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
699 &cfg_cmd_v3);
700 } else {
701 ret = -EINVAL;
702 }
703
704 if (ret)
705 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
706 }
707
rs_fw_tx_protection(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool enable)708 int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
709 bool enable)
710 {
711 /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
712 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
713 return 0;
714 }
715
iwl_mvm_rs_add_sta_link(struct iwl_mvm * mvm,struct iwl_mvm_link_sta * link_sta)716 void iwl_mvm_rs_add_sta_link(struct iwl_mvm *mvm,
717 struct iwl_mvm_link_sta *link_sta)
718 {
719 struct iwl_lq_sta_rs_fw *lq_sta;
720
721 lq_sta = &link_sta->lq_sta.rs_fw;
722
723 lq_sta->pers.drv = mvm;
724 lq_sta->pers.sta_id = link_sta->sta_id;
725 lq_sta->pers.chains = 0;
726 memset(lq_sta->pers.chain_signal, 0,
727 sizeof(lq_sta->pers.chain_signal));
728 lq_sta->pers.last_rssi = S8_MIN;
729 lq_sta->last_rate_n_flags = 0;
730
731 #ifdef CONFIG_MAC80211_DEBUGFS
732 lq_sta->pers.dbg_fixed_rate = 0;
733 #endif
734 }
735
iwl_mvm_rs_add_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta)736 void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
737 {
738 unsigned int link_id;
739
740 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
741
742 for (link_id = 0; link_id < ARRAY_SIZE(mvmsta->link); link_id++) {
743 struct iwl_mvm_link_sta *link =
744 rcu_dereference_protected(mvmsta->link[link_id],
745 lockdep_is_held(&mvm->mutex));
746 if (!link)
747 continue;
748
749 iwl_mvm_rs_add_sta_link(mvm, link);
750 }
751 }
752