Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 533 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
new file mode 100644
index 000000000..2e9081cb6
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs-fw.c
@@ -0,0 +1,533 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2017 Intel Deutschland GmbH
+ * Copyright (C) 2018-2022 Intel Corporation
+ */
+#include "rs.h"
+#include "fw-api.h"
+#include "sta.h"
+#include "iwl-op-mode.h"
+#include "mvm.h"
+
+static u8 rs_fw_bw_from_sta_bw(struct ieee80211_sta *sta)
+{
+	switch (sta->deflink.bandwidth) {
+	case IEEE80211_STA_RX_BW_160:
+		return IWL_TLC_MNG_CH_WIDTH_160MHZ;
+	case IEEE80211_STA_RX_BW_80:
+		return IWL_TLC_MNG_CH_WIDTH_80MHZ;
+	case IEEE80211_STA_RX_BW_40:
+		return IWL_TLC_MNG_CH_WIDTH_40MHZ;
+	case IEEE80211_STA_RX_BW_20:
+	default:
+		return IWL_TLC_MNG_CH_WIDTH_20MHZ;
+	}
+}
+
+static u8 rs_fw_set_active_chains(u8 chains)
+{
+	u8 fw_chains = 0;
+
+	if (chains & ANT_A)
+		fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
+	if (chains & ANT_B)
+		fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
+
+	return fw_chains;
+}
+
+static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
+{
+	struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap = &sta->deflink.vht_cap;
+	struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	u8 supp = 0;
+
+	if (he_cap->has_he)
+		return 0;
+
+	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
+		supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
+	if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
+		supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
+	if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
+		supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
+	if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
+		supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
+
+	return supp;
+}
+
+static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
+				  struct ieee80211_sta *sta,
+				  struct ieee80211_supported_band *sband)
+{
+	struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
+	struct ieee80211_sta_vht_cap *vht_cap = &sta->deflink.vht_cap;
+	struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	bool vht_ena = vht_cap->vht_supported;
+	u16 flags = 0;
+
+	/* get STBC flags */
+	if (mvm->cfg->ht_params->stbc &&
+	    (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
+		if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
+				      IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+		else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+		else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
+			flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
+	}
+
+	if (mvm->cfg->ht_params->ldpc &&
+	    ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
+	     (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	/* consider LDPC support in case of HE */
+	if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
+	    IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	if (sband->iftype_data && sband->iftype_data->he_cap.has_he &&
+	    !(sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[1] &
+	     IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
+		flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
+
+	if (he_cap->has_he &&
+	    (he_cap->he_cap_elem.phy_cap_info[3] &
+	     IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK &&
+	     sband->iftype_data &&
+	     sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[3] &
+	     IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_TX_MASK))
+		flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
+
+	return flags;
+}
+
+static
+int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
+				   int nss)
+{
+	u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
+		(0x3 << (2 * (nss - 1)));
+	rx_mcs >>= (2 * (nss - 1));
+
+	switch (rx_mcs) {
+	case IEEE80211_VHT_MCS_SUPPORT_0_7:
+		return IWL_TLC_MNG_HT_RATE_MCS7;
+	case IEEE80211_VHT_MCS_SUPPORT_0_8:
+		return IWL_TLC_MNG_HT_RATE_MCS8;
+	case IEEE80211_VHT_MCS_SUPPORT_0_9:
+		return IWL_TLC_MNG_HT_RATE_MCS9;
+	default:
+		WARN_ON_ONCE(1);
+		break;
+	}
+
+	return 0;
+}
+
+static void
+rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
+			    const struct ieee80211_sta_vht_cap *vht_cap,
+			    struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	u16 supp;
+	int i, highest_mcs;
+	u8 max_nss = sta->deflink.rx_nss;
+	struct ieee80211_vht_cap ieee_vht_cap = {
+		.vht_cap_info = cpu_to_le32(vht_cap->cap),
+		.supp_mcs = vht_cap->vht_mcs,
+	};
+
+	/* the station support only a single receive chain */
+	if (sta->deflink.smps_mode == IEEE80211_SMPS_STATIC)
+		max_nss = 1;
+
+	for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
+		int nss = i + 1;
+
+		highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
+		if (!highest_mcs)
+			continue;
+
+		supp = BIT(highest_mcs + 1) - 1;
+		if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_20)
+			supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
+
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] = cpu_to_le16(supp);
+		/*
+		 * Check if VHT extended NSS indicates that the bandwidth/NSS
+		 * configuration is supported - only for MCS 0 since we already
+		 * decoded the MCS bits anyway ourselves.
+		 */
+		if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_160 &&
+		    ieee80211_get_vht_max_nss(&ieee_vht_cap,
+					      IEEE80211_VHT_CHANWIDTH_160MHZ,
+					      0, true, nss) >= nss)
+			cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
+				cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80];
+	}
+}
+
+static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
+{
+	switch (mcs) {
+	case IEEE80211_HE_MCS_SUPPORT_0_7:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_9:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
+	case IEEE80211_HE_MCS_SUPPORT_0_11:
+		return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
+	case IEEE80211_HE_MCS_NOT_SUPPORTED:
+		return 0;
+	}
+
+	WARN(1, "invalid HE MCS %d\n", mcs);
+	return 0;
+}
+
+static void
+rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
+			   struct ieee80211_supported_band *sband,
+			   struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+	u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
+	u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
+	u16 tx_mcs_80 =
+		le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_80);
+	u16 tx_mcs_160 =
+		le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_160);
+	int i;
+	u8 nss = sta->deflink.rx_nss;
+
+	/* the station support only a single receive chain */
+	if (sta->deflink.smps_mode == IEEE80211_SMPS_STATIC)
+		nss = 1;
+
+	for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
+		u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
+		u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
+		u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
+		u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
+
+		/* If one side doesn't support - mark both as not supporting */
+		if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+		    _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
+			_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+			_tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+		}
+		if (_mcs_80 > _tx_mcs_80)
+			_mcs_80 = _tx_mcs_80;
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_80] =
+			cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
+
+		/* If one side doesn't support - mark both as not supporting */
+		if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
+		    _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
+			_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+			_tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
+		}
+		if (_mcs_160 > _tx_mcs_160)
+			_mcs_160 = _tx_mcs_160;
+		cmd->ht_rates[i][IWL_TLC_MCS_PER_BW_160] =
+			cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
+	}
+}
+
+static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
+				 struct ieee80211_supported_band *sband,
+				 struct iwl_tlc_config_cmd_v4 *cmd)
+{
+	int i;
+	u16 supp = 0;
+	unsigned long tmp; /* must be unsigned long for for_each_set_bit */
+	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
+	const struct ieee80211_sta_vht_cap *vht_cap = &sta->deflink.vht_cap;
+	const struct ieee80211_sta_he_cap *he_cap = &sta->deflink.he_cap;
+
+	/* non HT rates */
+	tmp = sta->deflink.supp_rates[sband->band];
+	for_each_set_bit(i, &tmp, BITS_PER_LONG)
+		supp |= BIT(sband->bitrates[i].hw_value);
+
+	cmd->non_ht_rates = cpu_to_le16(supp);
+	cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
+
+	/* HT/VHT rates */
+	if (he_cap->has_he) {
+		cmd->mode = IWL_TLC_MNG_MODE_HE;
+		rs_fw_he_set_enabled_rates(sta, sband, cmd);
+	} else if (vht_cap->vht_supported) {
+		cmd->mode = IWL_TLC_MNG_MODE_VHT;
+		rs_fw_vht_set_enabled_rates(sta, vht_cap, cmd);
+	} else if (ht_cap->ht_supported) {
+		cmd->mode = IWL_TLC_MNG_MODE_HT;
+		cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_MCS_PER_BW_80] =
+			cpu_to_le16(ht_cap->mcs.rx_mask[0]);
+
+		/* the station support only a single receive chain */
+		if (sta->deflink.smps_mode == IEEE80211_SMPS_STATIC)
+			cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
+				0;
+		else
+			cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_MCS_PER_BW_80] =
+				cpu_to_le16(ht_cap->mcs.rx_mask[1]);
+	}
+}
+
+void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
+			      struct iwl_rx_cmd_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_tlc_update_notif *notif;
+	struct ieee80211_sta *sta;
+	struct iwl_mvm_sta *mvmsta;
+	struct iwl_lq_sta_rs_fw *lq_sta;
+	u32 flags;
+
+	rcu_read_lock();
+
+	notif = (void *)pkt->data;
+	sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
+	if (IS_ERR_OR_NULL(sta)) {
+		/* can happen in remove station flow where mvm removed internally
+		 * the station before removing from FW
+		 */
+		IWL_DEBUG_RATE(mvm,
+			       "Invalid mvm RCU pointer for sta id (%d) in TLC notification\n",
+			       notif->sta_id);
+		goto out;
+	}
+
+	mvmsta = iwl_mvm_sta_from_mac80211(sta);
+
+	if (!mvmsta) {
+		IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
+			notif->sta_id);
+		goto out;
+	}
+
+	flags = le32_to_cpu(notif->flags);
+
+	lq_sta = &mvmsta->lq_sta.rs_fw;
+
+	if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
+		char pretty_rate[100];
+
+		if (iwl_fw_lookup_notif_ver(mvm->fw, DATA_PATH_GROUP,
+					    TLC_MNG_UPDATE_NOTIF, 0) < 3) {
+			rs_pretty_print_rate_v1(pretty_rate,
+						sizeof(pretty_rate),
+						le32_to_cpu(notif->rate));
+			IWL_DEBUG_RATE(mvm,
+				       "Got rate in old format. Rate: %s. Converting.\n",
+				       pretty_rate);
+			lq_sta->last_rate_n_flags =
+				iwl_new_rate_from_v1(le32_to_cpu(notif->rate));
+		} else {
+			lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
+		}
+		rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
+				     lq_sta->last_rate_n_flags);
+		IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
+	}
+
+	if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvmsta->orig_amsdu_len) {
+		u16 size = le32_to_cpu(notif->amsdu_size);
+		int i;
+
+		if (sta->deflink.agg.max_amsdu_len < size) {
+			/*
+			 * In debug sta->deflink.agg.max_amsdu_len < size
+			 * so also check with orig_amsdu_len which holds the
+			 * original data before debugfs changed the value
+			 */
+			WARN_ON(mvmsta->orig_amsdu_len < size);
+			goto out;
+		}
+
+		mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
+		mvmsta->max_amsdu_len = size;
+		sta->deflink.agg.max_rc_amsdu_len = mvmsta->max_amsdu_len;
+
+		for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
+			if (mvmsta->amsdu_enabled & BIT(i))
+				sta->deflink.agg.max_tid_amsdu_len[i] =
+					iwl_mvm_max_amsdu_size(mvm, sta, i);
+			else
+				/*
+				 * Not so elegant, but this will effectively
+				 * prevent AMSDU on this TID
+				 */
+				sta->deflink.agg.max_tid_amsdu_len[i] = 1;
+		}
+
+		IWL_DEBUG_RATE(mvm,
+			       "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
+			       le32_to_cpu(notif->amsdu_size), size,
+			       mvmsta->amsdu_enabled);
+	}
+out:
+	rcu_read_unlock();
+}
+
+u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta)
+{
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	const struct ieee80211_sta_vht_cap *vht_cap = &sta->deflink.vht_cap;
+	const struct ieee80211_sta_ht_cap *ht_cap = &sta->deflink.ht_cap;
+
+	if (mvmsta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) {
+		switch (le16_get_bits(sta->deflink.he_6ghz_capa.capa,
+				      IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
+		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
+			return IEEE80211_MAX_MPDU_LEN_VHT_11454;
+		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
+			return IEEE80211_MAX_MPDU_LEN_VHT_7991;
+		default:
+			return IEEE80211_MAX_MPDU_LEN_VHT_3895;
+		}
+	} else
+	if (vht_cap->vht_supported) {
+		switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
+		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
+			return IEEE80211_MAX_MPDU_LEN_VHT_11454;
+		case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
+			return IEEE80211_MAX_MPDU_LEN_VHT_7991;
+		default:
+			return IEEE80211_MAX_MPDU_LEN_VHT_3895;
+		}
+	} else if (ht_cap->ht_supported) {
+		if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
+			/*
+			 * agg is offloaded so we need to assume that agg
+			 * are enabled and max mpdu in ampdu is 4095
+			 * (spec 802.11-2016 9.3.2.1)
+			 */
+			return IEEE80211_MAX_MPDU_LEN_HT_BA;
+		else
+			return IEEE80211_MAX_MPDU_LEN_HT_3839;
+	}
+
+	/* in legacy mode no amsdu is enabled so return zero */
+	return 0;
+}
+
+void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
+		     enum nl80211_band band, bool update)
+{
+	struct ieee80211_hw *hw = mvm->hw;
+	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+	struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
+	u32 cmd_id = WIDE_ID(DATA_PATH_GROUP, TLC_MNG_CONFIG_CMD);
+	struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
+	u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta);
+	struct iwl_tlc_config_cmd_v4 cfg_cmd = {
+		.sta_id = mvmsta->sta_id,
+		.max_ch_width = update ?
+			rs_fw_bw_from_sta_bw(sta) : RATE_MCS_CHAN_WIDTH_20,
+		.flags = cpu_to_le16(rs_fw_get_config_flags(mvm, sta, sband)),
+		.chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
+		.sgi_ch_width_supp = rs_fw_sgi_cw_support(sta),
+		.max_mpdu_len = iwl_mvm_is_csum_supported(mvm) ?
+				cpu_to_le16(max_amsdu_len) : 0,
+	};
+	int ret;
+	int cmd_ver;
+
+	memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
+
+#ifdef CONFIG_IWLWIFI_DEBUGFS
+	iwl_mvm_reset_frame_stats(mvm);
+#endif
+	rs_fw_set_supp_rates(sta, sband, &cfg_cmd);
+
+	/*
+	 * since TLC offload works with one mode we can assume
+	 * that only vht/ht is used and also set it as station max amsdu
+	 */
+	sta->deflink.agg.max_amsdu_len = max_amsdu_len;
+
+	cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
+					WIDE_ID(DATA_PATH_GROUP,
+						TLC_MNG_CONFIG_CMD),
+					0);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, sta_id=%d, max_ch_width=%d, mode=%d\n",
+		       cfg_cmd.sta_id, cfg_cmd.max_ch_width, cfg_cmd.mode);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, chains=0x%X, ch_wid_supp=%d, flags=0x%X\n",
+		       cfg_cmd.chains, cfg_cmd.sgi_ch_width_supp, cfg_cmd.flags);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, mpdu_len=%d, no_ht_rate=0x%X, tx_op=%d\n",
+		       cfg_cmd.max_mpdu_len, cfg_cmd.non_ht_rates, cfg_cmd.max_tx_op);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][0]=0x%X, ht_rate[1][0]=0x%X\n",
+		       cfg_cmd.ht_rates[0][0], cfg_cmd.ht_rates[1][0]);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][1]=0x%X, ht_rate[1][1]=0x%X\n",
+		       cfg_cmd.ht_rates[0][1], cfg_cmd.ht_rates[1][1]);
+	IWL_DEBUG_RATE(mvm, "TLC CONFIG CMD, ht_rate[0][2]=0x%X, ht_rate[1][2]=0x%X\n",
+		       cfg_cmd.ht_rates[0][2], cfg_cmd.ht_rates[1][2]);
+	if (cmd_ver == 4) {
+		ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC,
+					   sizeof(cfg_cmd), &cfg_cmd);
+	} else if (cmd_ver < 4) {
+		struct iwl_tlc_config_cmd_v3 cfg_cmd_v3 = {
+			.sta_id = cfg_cmd.sta_id,
+			.max_ch_width = cfg_cmd.max_ch_width,
+			.mode = cfg_cmd.mode,
+			.chains = cfg_cmd.chains,
+			.amsdu = !!cfg_cmd.max_mpdu_len,
+			.flags = cfg_cmd.flags,
+			.non_ht_rates = cfg_cmd.non_ht_rates,
+			.ht_rates[0][0] = cfg_cmd.ht_rates[0][0],
+			.ht_rates[0][1] = cfg_cmd.ht_rates[0][1],
+			.ht_rates[1][0] = cfg_cmd.ht_rates[1][0],
+			.ht_rates[1][1] = cfg_cmd.ht_rates[1][1],
+			.sgi_ch_width_supp = cfg_cmd.sgi_ch_width_supp,
+			.max_mpdu_len = cfg_cmd.max_mpdu_len,
+		};
+
+		u16 cmd_size = sizeof(cfg_cmd_v3);
+
+		/* In old versions of the API the struct is 4 bytes smaller */
+		if (iwl_fw_lookup_cmd_ver(mvm->fw,
+					  WIDE_ID(DATA_PATH_GROUP,
+						  TLC_MNG_CONFIG_CMD), 0) < 3)
+			cmd_size -= 4;
+
+		ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
+					   &cfg_cmd_v3);
+	} else {
+		ret = -EINVAL;
+	}
+
+	if (ret)
+		IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
+}
+
+int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
+			bool enable)
+{
+	/* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
+	IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
+	return 0;
+}
+
+void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
+{
+	struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
+
+	IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
+
+	lq_sta->pers.drv = mvm;
+	lq_sta->pers.sta_id = mvmsta->sta_id;
+	lq_sta->pers.chains = 0;
+	memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
+	lq_sta->pers.last_rssi = S8_MIN;
+	lq_sta->last_rate_n_flags = 0;
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+	lq_sta->pers.dbg_fixed_rate = 0;
+#endif
+}