756 lines · c
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2017 Intel Deutschland GmbH4 * Copyright (C) 2018-2024 Intel Corporation5 */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(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 29static 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 41static 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 63static 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 112static113int 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 135static void136rs_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/NSS166 * configuration is supported - only for MCS 0 since we already167 * 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 178static 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 195static void196rs_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 242static 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 256static 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 267static const268struct ieee80211_eht_mcs_nss_supp_bw *269rs_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 284static void285rs_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 366static 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 else409 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 414void 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 internally433 * the station before removing from FW434 */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 u32 enabled = le32_to_cpu(notif->amsdu_enabled);483 u16 size = le32_to_cpu(notif->amsdu_size);484 int i;485 486 if (size < 2000) {487 size = 0;488 enabled = 0;489 }490 491 if (link_sta->agg.max_amsdu_len < size) {492 /*493 * In debug link_sta->agg.max_amsdu_len < size494 * so also check with orig_amsdu_len which holds the495 * original data before debugfs changed the value496 */497 WARN_ON(mvm_link_sta->orig_amsdu_len < size);498 goto out;499 }500 501 mvmsta->amsdu_enabled = enabled;502 mvmsta->max_amsdu_len = size;503 link_sta->agg.max_rc_amsdu_len = mvmsta->max_amsdu_len;504 505 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {506 if (mvmsta->amsdu_enabled & BIT(i))507 link_sta->agg.max_tid_amsdu_len[i] =508 iwl_mvm_max_amsdu_size(mvm, sta, i);509 else510 /*511 * Not so elegant, but this will effectively512 * prevent AMSDU on this TID513 */514 link_sta->agg.max_tid_amsdu_len[i] = 1;515 }516 517 ieee80211_sta_recalc_aggregates(sta);518 519 IWL_DEBUG_RATE(mvm,520 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",521 le32_to_cpu(notif->amsdu_size), size,522 mvmsta->amsdu_enabled);523 }524out:525 rcu_read_unlock();526}527 528u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta,529 struct ieee80211_bss_conf *link_conf,530 struct ieee80211_link_sta *link_sta)531{532 const struct ieee80211_sta_vht_cap *vht_cap = &link_sta->vht_cap;533 const struct ieee80211_sta_ht_cap *ht_cap = &link_sta->ht_cap;534 const struct ieee80211_sta_eht_cap *eht_cap = &link_sta->eht_cap;535 536 if (WARN_ON_ONCE(!link_conf->chanreq.oper.chan))537 return IEEE80211_MAX_MPDU_LEN_VHT_3895;538 539 if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) {540 switch (le16_get_bits(link_sta->he_6ghz_capa.capa,541 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {542 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:543 return IEEE80211_MAX_MPDU_LEN_VHT_11454;544 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:545 return IEEE80211_MAX_MPDU_LEN_VHT_7991;546 default:547 return IEEE80211_MAX_MPDU_LEN_VHT_3895;548 }549 } else if (link_conf->chanreq.oper.chan->band == NL80211_BAND_2GHZ &&550 eht_cap->has_eht) {551 switch (u8_get_bits(eht_cap->eht_cap_elem.mac_cap_info[0],552 IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_MASK)) {553 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_11454:554 return IEEE80211_MAX_MPDU_LEN_VHT_11454;555 case IEEE80211_EHT_MAC_CAP0_MAX_MPDU_LEN_7991:556 return IEEE80211_MAX_MPDU_LEN_VHT_7991;557 default:558 return IEEE80211_MAX_MPDU_LEN_VHT_3895;559 }560 } else if (vht_cap->vht_supported) {561 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {562 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:563 return IEEE80211_MAX_MPDU_LEN_VHT_11454;564 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:565 return IEEE80211_MAX_MPDU_LEN_VHT_7991;566 default:567 return IEEE80211_MAX_MPDU_LEN_VHT_3895;568 }569 } else if (ht_cap->ht_supported) {570 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)571 /*572 * agg is offloaded so we need to assume that agg573 * are enabled and max mpdu in ampdu is 4095574 * (spec 802.11-2016 9.3.2.1)575 */576 return IEEE80211_MAX_MPDU_LEN_HT_BA;577 else578 return IEEE80211_MAX_MPDU_LEN_HT_3839;579 }580 581 /* in legacy mode no amsdu is enabled so return zero */582 return 0;583}584 585void iwl_mvm_rs_fw_rate_init(struct iwl_mvm *mvm,586 struct ieee80211_vif *vif,587 struct ieee80211_sta *sta,588 struct ieee80211_bss_conf *link_conf,589 struct ieee80211_link_sta *link_sta,590 enum nl80211_band band)591{592 struct ieee80211_hw *hw = mvm->hw;593 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);594 u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD);595 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];596 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta, link_conf, link_sta);597 const struct ieee80211_sta_he_cap *sband_he_cap =598 ieee80211_get_he_iftype_cap_vif(sband, vif);599 const struct ieee80211_sta_eht_cap *sband_eht_cap =600 ieee80211_get_eht_iftype_cap_vif(sband, vif);601 struct iwl_mvm_link_sta *mvm_link_sta;602 struct iwl_lq_sta_rs_fw *lq_sta;603 struct iwl_tlc_config_cmd_v4 cfg_cmd = {604 .max_ch_width = mvmsta->authorized ?605 rs_fw_bw_from_sta_bw(link_sta) : IWL_TLC_MNG_CH_WIDTH_20MHZ,606 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, vif, link_sta,607 sband_he_cap)),608 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),609 .sgi_ch_width_supp = rs_fw_sgi_cw_support(link_sta),610 .max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ?611 cpu_to_le16(max_amsdu_len) : 0,612 };613 unsigned int link_id = link_conf->link_id;614 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);615 int cmd_ver;616 int ret;617 618 /* Enable external EHT LTF only for GL device and if there's619 * mutual support by AP and client620 */621 if (CSR_HW_REV_TYPE(mvm->trans->hw_rev) == IWL_CFG_MAC_TYPE_GL &&622 sband_eht_cap &&623 sband_eht_cap->eht_cap_elem.phy_cap_info[5] &624 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF &&625 link_sta->eht_cap.has_eht &&626 link_sta->eht_cap.eht_cap_elem.phy_cap_info[5] &627 IEEE80211_EHT_PHY_CAP5_SUPP_EXTRA_EHT_LTF) {628 IWL_DEBUG_RATE(mvm, "Set support for Extra EHT LTF\n");629 cfg_cmd.flags |=630 cpu_to_le16(IWL_TLC_MNG_CFG_FLAGS_EHT_EXTRA_LTF_MSK);631 }632 633 rcu_read_lock();634 mvm_link_sta = rcu_dereference(mvmsta->link[link_id]);635 if (WARN_ON_ONCE(!mvm_link_sta)) {636 rcu_read_unlock();637 return;638 }639 640 cfg_cmd.sta_id = mvm_link_sta->sta_id;641 642 lq_sta = &mvm_link_sta->lq_sta.rs_fw;643 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));644 645 rcu_read_unlock();646 647#ifdef CONFIG_IWLWIFI_DEBUGFS648 iwl_mvm_reset_frame_stats(mvm);649#endif650 rs_fw_set_supp_rates(vif, link_sta, sband,651 sband_he_cap, sband_eht_cap,652 &cfg_cmd);653 654 /*655 * since TLC offload works with one mode we can assume656 * that only vht/ht is used and also set it as station max amsdu657 */658 link_sta->agg.max_amsdu_len = max_amsdu_len;659 ieee80211_sta_recalc_aggregates(sta);660 661 cfg_cmd.max_tx_op = cpu_to_le16(mvmvif->max_tx_op);662 663 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 0);664 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",665 cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode);666 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n",667 cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags);668 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n",669 cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op);670 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n",671 cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]);672 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n",673 cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]);674 IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n",675 cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]);676 if (cmd_ver == 4) {677 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC,678 sizeof(cfg_cmd), &cfg_cmd);679 } else if (cmd_ver < 4) {680 struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = {681 .sta_id = cfg_cmd.sta_id,682 .max_ch_width = cfg_cmd.max_ch_width,683 .mode = cfg_cmd.mode,684 .chains = cfg_cmd.chains,685 .amsdu = !!cfg_cmd.max_mpdu_len,686 .flags = cfg_cmd.flags,687 .non_ht_rates = cfg_cmd.non_ht_rates,688 .ht_rates[0][0] = cfg_cmd.ht_rates[0][0],689 .ht_rates[0][1] = cfg_cmd.ht_rates[0][1],690 .ht_rates[1][0] = cfg_cmd.ht_rates[1][0],691 .ht_rates[1][1] = cfg_cmd.ht_rates[1][1],692 .sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp,693 .max_mpdu_len = cfg_cmd.max_mpdu_len,694 };695 696 u16 cmd_size = sizeof(cfg_cmd_v3);697 698 /* In old versions of the API the struct is 4 bytes smaller */699 if (iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id, 0) < 3)700 cmd_size -= 4;701 702 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,703 &cfg_cmd_v3);704 } else {705 ret = -EINVAL;706 }707 708 if (ret)709 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);710}711 712int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,713 bool enable)714{715 /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */716 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");717 return 0;718}719 720void iwl_mvm_rs_add_sta_link(struct iwl_mvm *mvm,721 struct iwl_mvm_link_sta *link_sta)722{723 struct iwl_lq_sta_rs_fw *lq_sta;724 725 lq_sta = &link_sta->lq_sta.rs_fw;726 727 lq_sta->pers.drv = mvm;728 lq_sta->pers.sta_id = link_sta->sta_id;729 lq_sta->pers.chains = 0;730 memset(lq_sta->pers.chain_signal, 0,731 sizeof(lq_sta->pers.chain_signal));732 lq_sta->pers.last_rssi = S8_MIN;733 lq_sta->last_rate_n_flags = 0;734 735#ifdef CONFIG_MAC80211_DEBUGFS736 lq_sta->pers.dbg_fixed_rate = 0;737#endif738}739 740void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)741{742 unsigned int link_id;743 744 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");745 746 for (link_id = 0; link_id < ARRAY_SIZE(mvmsta->link); link_id++) {747 struct iwl_mvm_link_sta *link =748 rcu_dereference_protected(mvmsta->link[link_id],749 lockdep_is_held(&mvm->mutex));750 if (!link)751 continue;752 753 iwl_mvm_rs_add_sta_link(mvm, link);754 }755}756