184 lines · c
1// SPDX-License-Identifier: ISC2/*3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>4 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>5 */6 7#include <linux/kernel.h>8 9#include "mt76x02.h"10 11void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,12 struct sk_buff *skb)13{14 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);15 struct mt76x02_dev *dev = hw->priv;16 struct ieee80211_vif *vif = info->control.vif;17 struct mt76_wcid *wcid = &dev->mt76.global_wcid;18 19 if (control->sta) {20 struct mt76x02_sta *msta;21 22 msta = (struct mt76x02_sta *)control->sta->drv_priv;23 wcid = &msta->wcid;24 } else if (vif) {25 struct mt76x02_vif *mvif;26 27 mvif = (struct mt76x02_vif *)vif->drv_priv;28 wcid = &mvif->group_wcid;29 }30 31 mt76_tx(&dev->mphy, control->sta, wcid, skb);32}33EXPORT_SYMBOL_GPL(mt76x02_tx);34 35void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,36 struct sk_buff *skb, u32 *info)37{38 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);39 void *rxwi = skb->data;40 41 if (q == MT_RXQ_MCU) {42 mt76_mcu_rx_event(&dev->mt76, skb);43 return;44 }45 46 skb_pull(skb, sizeof(struct mt76x02_rxwi));47 if (mt76x02_mac_process_rx(dev, skb, rxwi)) {48 dev_kfree_skb(skb);49 return;50 }51 52 mt76_rx(mdev, q, skb);53}54EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);55 56s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,57 const struct ieee80211_tx_rate *rate)58{59 s8 max_txpwr;60 61 if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {62 u8 mcs = ieee80211_rate_get_vht_mcs(rate);63 64 if (mcs == 8 || mcs == 9) {65 max_txpwr = dev->rate_power.vht[0];66 } else {67 u8 nss, idx;68 69 nss = ieee80211_rate_get_vht_nss(rate);70 idx = ((nss - 1) << 3) + mcs;71 max_txpwr = dev->rate_power.ht[idx & 0xf];72 }73 } else if (rate->flags & IEEE80211_TX_RC_MCS) {74 max_txpwr = dev->rate_power.ht[rate->idx & 0xf];75 } else {76 enum nl80211_band band = dev->mphy.chandef.chan->band;77 78 if (band == NL80211_BAND_2GHZ) {79 const struct ieee80211_rate *r;80 struct wiphy *wiphy = dev->mt76.hw->wiphy;81 struct mt76x02_rate_power *rp = &dev->rate_power;82 83 r = &wiphy->bands[band]->bitrates[rate->idx];84 if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)85 max_txpwr = rp->cck[r->hw_value & 0x3];86 else87 max_txpwr = rp->ofdm[r->hw_value & 0x7];88 } else {89 max_txpwr = dev->rate_power.ofdm[rate->idx & 0x7];90 }91 }92 93 return max_txpwr;94}95 96s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj)97{98 txpwr = min_t(s8, txpwr, dev->txpower_conf);99 txpwr -= (dev->target_power + dev->target_power_delta[0]);100 txpwr = min_t(s8, txpwr, max_txpwr_adj);101 102 if (!dev->enable_tpc)103 return 0;104 else if (txpwr >= 0)105 return min_t(s8, txpwr, 7);106 else107 return (txpwr < -16) ? 8 : (txpwr + 32) / 2;108}109 110void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr)111{112 s8 txpwr_adj;113 114 txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr,115 dev->rate_power.ofdm[4]);116 mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,117 MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);118 mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,119 MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);120}121EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);122 123bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update)124{125 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);126 struct mt76x02_tx_status stat;127 128 if (!mt76x02_mac_load_tx_status(dev, &stat))129 return false;130 131 mt76x02_send_tx_status(dev, &stat, update);132 133 return true;134}135EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);136 137int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,138 enum mt76_txq_id qid, struct mt76_wcid *wcid,139 struct ieee80211_sta *sta,140 struct mt76_tx_info *tx_info)141{142 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);143 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data;144 struct mt76x02_txwi *txwi = txwi_ptr;145 bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU;146 int hdrlen, len, pid, qsel = MT_QSEL_EDCA;147 148 if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128)149 mt76x02_mac_wcid_set_drop(dev, wcid->idx, false);150 151 hdrlen = ieee80211_hdrlen(hdr->frame_control);152 len = tx_info->skb->len - (hdrlen & 2);153 mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len);154 155 pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);156 157 /* encode packet rate for no-skb packet id to fix up status reporting */158 if (pid == MT_PACKET_ID_NO_SKB)159 pid = MT_PACKET_ID_HAS_RATE |160 (le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX) |161 FIELD_PREP(MT_PKTID_AC,162 skb_get_queue_mapping(tx_info->skb));163 164 txwi->pktid = pid;165 166 if (mt76_is_skb_pktid(pid) && ampdu)167 qsel = MT_QSEL_MGMT;168 169 tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |170 MT_TXD_INFO_80211;171 172 if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)173 tx_info->info |= MT_TXD_INFO_WIV;174 175 if (sta) {176 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;177 178 ewma_pktlen_add(&msta->pktlen, tx_info->skb->len);179 }180 181 return 0;182}183EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);184