/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mt76x2.h"
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#include "mt76x2_dma.h"
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void mt76x2_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
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struct sk_buff *skb)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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struct mt76x2_dev *dev = hw->priv;
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struct ieee80211_vif *vif = info->control.vif;
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struct mt76_wcid *wcid = &dev->global_wcid;
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if (control->sta) {
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struct mt76x2_sta *msta;
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msta = (struct mt76x2_sta *)control->sta->drv_priv;
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wcid = &msta->wcid;
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/* sw encrypted frames */
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if (!info->control.hw_key && wcid->hw_key_idx != 0xff)
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control->sta = NULL;
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}
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if (vif && !control->sta) {
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struct mt76x2_vif *mvif;
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mvif = (struct mt76x2_vif *)vif->drv_priv;
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wcid = &mvif->group_wcid;
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}
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mt76_tx(&dev->mt76, control->sta, wcid, skb);
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}
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EXPORT_SYMBOL_GPL(mt76x2_tx);
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int mt76x2_insert_hdr_pad(struct sk_buff *skb)
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{
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int len = ieee80211_get_hdrlen_from_skb(skb);
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if (len % 4 == 0)
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return 0;
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skb_push(skb, 2);
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memmove(skb->data, skb->data + 2, len);
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skb->data[len] = 0;
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skb->data[len + 1] = 0;
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return 2;
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}
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EXPORT_SYMBOL_GPL(mt76x2_insert_hdr_pad);
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s8 mt76x2_tx_get_max_txpwr_adj(struct mt76x2_dev *dev,
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const struct ieee80211_tx_rate *rate)
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{
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s8 max_txpwr;
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if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
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u8 mcs = ieee80211_rate_get_vht_mcs(rate);
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if (mcs == 8 || mcs == 9) {
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max_txpwr = dev->rate_power.vht[8];
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} else {
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u8 nss, idx;
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nss = ieee80211_rate_get_vht_nss(rate);
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idx = ((nss - 1) << 3) + mcs;
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max_txpwr = dev->rate_power.ht[idx & 0xf];
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}
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} else if (rate->flags & IEEE80211_TX_RC_MCS) {
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max_txpwr = dev->rate_power.ht[rate->idx & 0xf];
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} else {
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enum nl80211_band band = dev->mt76.chandef.chan->band;
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if (band == NL80211_BAND_2GHZ) {
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const struct ieee80211_rate *r;
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struct wiphy *wiphy = mt76_hw(dev)->wiphy;
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struct mt76_rate_power *rp = &dev->rate_power;
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r = &wiphy->bands[band]->bitrates[rate->idx];
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if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
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max_txpwr = rp->cck[r->hw_value & 0x3];
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else
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max_txpwr = rp->ofdm[r->hw_value & 0x7];
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} else {
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max_txpwr = dev->rate_power.ofdm[rate->idx & 0x7];
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}
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}
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return max_txpwr;
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}
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EXPORT_SYMBOL_GPL(mt76x2_tx_get_max_txpwr_adj);
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s8 mt76x2_tx_get_txpwr_adj(struct mt76x2_dev *dev, s8 txpwr, s8 max_txpwr_adj)
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{
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txpwr = min_t(s8, txpwr, dev->txpower_conf);
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txpwr -= (dev->target_power + dev->target_power_delta[0]);
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txpwr = min_t(s8, txpwr, max_txpwr_adj);
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if (!dev->enable_tpc)
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return 0;
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else if (txpwr >= 0)
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return min_t(s8, txpwr, 7);
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else
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return (txpwr < -16) ? 8 : (txpwr + 32) / 2;
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}
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EXPORT_SYMBOL_GPL(mt76x2_tx_get_txpwr_adj);
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void mt76x2_tx_set_txpwr_auto(struct mt76x2_dev *dev, s8 txpwr)
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{
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s8 txpwr_adj;
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txpwr_adj = mt76x2_tx_get_txpwr_adj(dev, txpwr,
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dev->rate_power.ofdm[4]);
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mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
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MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);
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mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
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MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);
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}
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EXPORT_SYMBOL_GPL(mt76x2_tx_set_txpwr_auto);
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void mt76x2_tx_complete(struct mt76x2_dev *dev, struct sk_buff *skb)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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if (info->flags & IEEE80211_TX_CTL_AMPDU) {
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ieee80211_free_txskb(mt76_hw(dev), skb);
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} else {
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ieee80211_tx_info_clear_status(info);
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info->status.rates[0].idx = -1;
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info->flags |= IEEE80211_TX_STAT_ACK;
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ieee80211_tx_status(mt76_hw(dev), skb);
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}
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}
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EXPORT_SYMBOL_GPL(mt76x2_tx_complete);
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