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- // SPDX-License-Identifier: ISC
- /*
- * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
- * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
- */
- #include <linux/kernel.h>
- #include "mt76x02.h"
- void mt76x02_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
- struct sk_buff *skb)
- {
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct mt76x02_dev *dev = hw->priv;
- struct ieee80211_vif *vif = info->control.vif;
- struct mt76_wcid *wcid = &dev->mt76.global_wcid;
- if (control->sta) {
- struct mt76x02_sta *msta;
- msta = (struct mt76x02_sta *)control->sta->drv_priv;
- wcid = &msta->wcid;
- } else if (vif) {
- struct mt76x02_vif *mvif;
- mvif = (struct mt76x02_vif *)vif->drv_priv;
- wcid = &mvif->group_wcid;
- }
- mt76_tx(&dev->mphy, control->sta, wcid, skb);
- }
- EXPORT_SYMBOL_GPL(mt76x02_tx);
- void mt76x02_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
- struct sk_buff *skb)
- {
- struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
- void *rxwi = skb->data;
- if (q == MT_RXQ_MCU) {
- mt76_mcu_rx_event(&dev->mt76, skb);
- return;
- }
- skb_pull(skb, sizeof(struct mt76x02_rxwi));
- if (mt76x02_mac_process_rx(dev, skb, rxwi)) {
- dev_kfree_skb(skb);
- return;
- }
- mt76_rx(mdev, q, skb);
- }
- EXPORT_SYMBOL_GPL(mt76x02_queue_rx_skb);
- s8 mt76x02_tx_get_max_txpwr_adj(struct mt76x02_dev *dev,
- const struct ieee80211_tx_rate *rate)
- {
- s8 max_txpwr;
- if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
- u8 mcs = ieee80211_rate_get_vht_mcs(rate);
- if (mcs == 8 || mcs == 9) {
- max_txpwr = dev->mt76.rate_power.vht[8];
- } else {
- u8 nss, idx;
- nss = ieee80211_rate_get_vht_nss(rate);
- idx = ((nss - 1) << 3) + mcs;
- max_txpwr = dev->mt76.rate_power.ht[idx & 0xf];
- }
- } else if (rate->flags & IEEE80211_TX_RC_MCS) {
- max_txpwr = dev->mt76.rate_power.ht[rate->idx & 0xf];
- } else {
- enum nl80211_band band = dev->mphy.chandef.chan->band;
- if (band == NL80211_BAND_2GHZ) {
- const struct ieee80211_rate *r;
- struct wiphy *wiphy = dev->mt76.hw->wiphy;
- struct mt76_rate_power *rp = &dev->mt76.rate_power;
- r = &wiphy->bands[band]->bitrates[rate->idx];
- if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
- max_txpwr = rp->cck[r->hw_value & 0x3];
- else
- max_txpwr = rp->ofdm[r->hw_value & 0x7];
- } else {
- max_txpwr = dev->mt76.rate_power.ofdm[rate->idx & 0x7];
- }
- }
- return max_txpwr;
- }
- s8 mt76x02_tx_get_txpwr_adj(struct mt76x02_dev *dev, s8 txpwr, s8 max_txpwr_adj)
- {
- txpwr = min_t(s8, txpwr, dev->txpower_conf);
- txpwr -= (dev->target_power + dev->target_power_delta[0]);
- txpwr = min_t(s8, txpwr, max_txpwr_adj);
- if (!dev->enable_tpc)
- return 0;
- else if (txpwr >= 0)
- return min_t(s8, txpwr, 7);
- else
- return (txpwr < -16) ? 8 : (txpwr + 32) / 2;
- }
- void mt76x02_tx_set_txpwr_auto(struct mt76x02_dev *dev, s8 txpwr)
- {
- s8 txpwr_adj;
- txpwr_adj = mt76x02_tx_get_txpwr_adj(dev, txpwr,
- dev->mt76.rate_power.ofdm[4]);
- mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
- MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);
- mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
- MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);
- }
- EXPORT_SYMBOL_GPL(mt76x02_tx_set_txpwr_auto);
- bool mt76x02_tx_status_data(struct mt76_dev *mdev, u8 *update)
- {
- struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
- struct mt76x02_tx_status stat;
- if (!mt76x02_mac_load_tx_status(dev, &stat))
- return false;
- mt76x02_send_tx_status(dev, &stat, update);
- return true;
- }
- EXPORT_SYMBOL_GPL(mt76x02_tx_status_data);
- int mt76x02_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
- enum mt76_txq_id qid, struct mt76_wcid *wcid,
- struct ieee80211_sta *sta,
- struct mt76_tx_info *tx_info)
- {
- struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx_info->skb->data;
- struct mt76x02_txwi *txwi = txwi_ptr;
- bool ampdu = IEEE80211_SKB_CB(tx_info->skb)->flags & IEEE80211_TX_CTL_AMPDU;
- int hdrlen, len, pid, qsel = MT_QSEL_EDCA;
- if (qid == MT_TXQ_PSD && wcid && wcid->idx < 128)
- mt76x02_mac_wcid_set_drop(dev, wcid->idx, false);
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
- len = tx_info->skb->len - (hdrlen & 2);
- mt76x02_mac_write_txwi(dev, txwi, tx_info->skb, wcid, sta, len);
- pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
- /* encode packet rate for no-skb packet id to fix up status reporting */
- if (pid == MT_PACKET_ID_NO_SKB)
- pid = MT_PACKET_ID_HAS_RATE |
- (le16_to_cpu(txwi->rate) & MT_RXWI_RATE_INDEX) |
- FIELD_PREP(MT_PKTID_AC,
- skb_get_queue_mapping(tx_info->skb));
- txwi->pktid = pid;
- if (mt76_is_skb_pktid(pid) && ampdu)
- qsel = MT_QSEL_MGMT;
- tx_info->info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |
- MT_TXD_INFO_80211;
- if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)
- tx_info->info |= MT_TXD_INFO_WIV;
- if (sta) {
- struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
- ewma_pktlen_add(&msta->pktlen, tx_info->skb->len);
- }
- return 0;
- }
- EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb);
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