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: &dev->mphy, sta: 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: &dev->mt76, skb); |
43 | return; |
44 | } |
45 | |
46 | skb_pull(skb, len: sizeof(struct mt76x02_rxwi)); |
47 | if (mt76x02_mac_process_rx(dev, skb, rxi: rxwi)) { |
48 | dev_kfree_skb(skb); |
49 | return; |
50 | } |
51 | |
52 | mt76_rx(dev: 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 | max_txpwr_adj: 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: &stat)) |
129 | return false; |
130 | |
131 | mt76x02_send_tx_status(dev, stat: &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(skb: 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, idx: wcid->idx, drop: false); |
150 | |
151 | hdrlen = ieee80211_hdrlen(fc: hdr->frame_control); |
152 | len = tx_info->skb->len - (hdrlen & 2); |
153 | mt76x02_mac_write_txwi(dev, txwi, skb: tx_info->skb, wcid, sta, len); |
154 | |
155 | pid = mt76_tx_status_skb_add(dev: mdev, wcid, skb: 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(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(e: &msta->pktlen, val: tx_info->skb->len); |
179 | } |
180 | |
181 | return 0; |
182 | } |
183 | EXPORT_SYMBOL_GPL(mt76x02_tx_prepare_skb); |
184 | |