1 // SPDX-License-Identifier: ISC 2 /* 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 11 void 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 } 33 EXPORT_SYMBOL_GPL(mt76x02_tx); 34 35 void 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 } 54 EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb); 55 56 s8 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 else 87 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 96 s8 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 else 107 return (txpwr < -16) ? 8 : (txpwr + 32) / 2; 108 } 109 110 void 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 } 121 EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto); 122 123 bool 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 } 135 EXPORT_SYMBOL_GPL(mt76x02_tx_status_data); 136 137 int 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 } 183 EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb); 184