mirror of
https://github.com/outbackdingo/mt76.git
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243 lines
6.1 KiB
C
243 lines
6.1 KiB
C
/*
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* Copyright (C) 2016 Felix Fietkau <[email protected]>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include "mt76.h"
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#define CHAN2G(_idx, _freq) { \
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.band = NL80211_BAND_2GHZ, \
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.center_freq = (_freq), \
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.hw_value = (_idx), \
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.max_power = 30, \
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}
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#define CHAN5G(_idx, _freq) { \
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.band = NL80211_BAND_5GHZ, \
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.center_freq = (_freq), \
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.hw_value = (_idx), \
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.max_power = 30, \
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}
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static const struct ieee80211_channel mt76_channels_2ghz[] = {
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CHAN2G(1, 2412),
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CHAN2G(2, 2417),
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CHAN2G(3, 2422),
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CHAN2G(4, 2427),
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CHAN2G(5, 2432),
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CHAN2G(6, 2437),
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CHAN2G(7, 2442),
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CHAN2G(8, 2447),
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CHAN2G(9, 2452),
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CHAN2G(10, 2457),
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CHAN2G(11, 2462),
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CHAN2G(12, 2467),
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CHAN2G(13, 2472),
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CHAN2G(14, 2484),
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};
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static const struct ieee80211_channel mt76_channels_5ghz[] = {
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CHAN5G(36, 5180),
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CHAN5G(40, 5200),
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CHAN5G(44, 5220),
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CHAN5G(48, 5240),
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CHAN5G(52, 5260),
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CHAN5G(56, 5280),
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CHAN5G(60, 5300),
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CHAN5G(64, 5320),
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CHAN5G(100, 5500),
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CHAN5G(104, 5520),
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CHAN5G(108, 5540),
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CHAN5G(112, 5560),
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CHAN5G(116, 5580),
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CHAN5G(120, 5600),
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CHAN5G(124, 5620),
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CHAN5G(128, 5640),
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CHAN5G(132, 5660),
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CHAN5G(136, 5680),
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CHAN5G(140, 5700),
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CHAN5G(149, 5745),
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CHAN5G(153, 5765),
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CHAN5G(157, 5785),
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CHAN5G(161, 5805),
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CHAN5G(165, 5825),
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};
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static int
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mt76_init_sband(struct mt76_dev *dev, struct ieee80211_supported_band *sband,
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const struct ieee80211_channel *chan, int n_chan,
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struct ieee80211_rate *rates, int n_rates, bool vht)
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{
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struct ieee80211_sta_ht_cap *ht_cap;
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struct ieee80211_sta_vht_cap *vht_cap;
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void *chanlist;
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u16 mcs_map;
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int size;
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size = n_chan * sizeof(*chan);
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chanlist = devm_kmemdup(dev->dev, chan, size, GFP_KERNEL);
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if (!chanlist)
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return -ENOMEM;
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sband->channels = chanlist;
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sband->n_channels = n_chan;
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sband->bitrates = rates;
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sband->n_bitrates = n_rates;
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ht_cap = &sband->ht_cap;
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ht_cap->ht_supported = true;
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ht_cap->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
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IEEE80211_HT_CAP_GRN_FLD |
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IEEE80211_HT_CAP_SGI_20 |
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IEEE80211_HT_CAP_SGI_40 |
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IEEE80211_HT_CAP_TX_STBC |
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(1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
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ht_cap->mcs.rx_mask[0] = 0xff;
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ht_cap->mcs.rx_mask[1] = 0xff;
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ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
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ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
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ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
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if (!vht)
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return 0;
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vht_cap = &sband->vht_cap;
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vht_cap->vht_supported = true;
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mcs_map = (IEEE80211_VHT_MCS_SUPPORT_0_9 << (0 * 2)) |
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(IEEE80211_VHT_MCS_SUPPORT_0_9 << (1 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (2 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (3 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (4 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (5 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (6 * 2)) |
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(IEEE80211_VHT_MCS_NOT_SUPPORTED << (7 * 2));
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vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
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vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
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vht_cap->cap |= IEEE80211_VHT_CAP_RXLDPC |
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IEEE80211_VHT_CAP_TXSTBC |
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IEEE80211_VHT_CAP_RXSTBC_1 |
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IEEE80211_VHT_CAP_SHORT_GI_80;
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return 0;
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}
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static int
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mt76_init_sband_2g(struct mt76_dev *dev, struct ieee80211_rate *rates,
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int n_rates)
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{
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dev->hw->wiphy->bands[NL80211_BAND_2GHZ] = &dev->sband_2g;
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return mt76_init_sband(dev, &dev->sband_2g,
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mt76_channels_2ghz,
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ARRAY_SIZE(mt76_channels_2ghz),
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rates, n_rates, false);
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}
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static int
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mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
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int n_rates, bool vht)
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{
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dev->hw->wiphy->bands[NL80211_BAND_5GHZ] = &dev->sband_5g;
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return mt76_init_sband(dev, &dev->sband_5g,
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mt76_channels_5ghz,
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ARRAY_SIZE(mt76_channels_5ghz),
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rates, n_rates, vht);
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}
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int mt76_register_device(struct mt76_dev *dev, bool vht,
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struct ieee80211_rate *rates, int n_rates)
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{
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struct ieee80211_hw *hw = dev->hw;
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struct wiphy *wiphy = hw->wiphy;
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int ret;
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dev_set_drvdata(dev->dev, dev);
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spin_lock_init(&dev->lock);
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INIT_LIST_HEAD(&dev->txwi_cache);
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SET_IEEE80211_DEV(hw, dev->dev);
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SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
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wiphy->interface_modes =
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BIT(NL80211_IFTYPE_STATION) |
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BIT(NL80211_IFTYPE_AP) |
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#ifdef CONFIG_MAC80211_MESH
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BIT(NL80211_IFTYPE_MESH_POINT) |
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#endif
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BIT(NL80211_IFTYPE_ADHOC);
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wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR;
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hw->txq_data_size = sizeof(struct mt76_txq);
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hw->max_tx_fragments = 16;
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ieee80211_hw_set(hw, SIGNAL_DBM);
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ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
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ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
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ieee80211_hw_set(hw, AMPDU_AGGREGATION);
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ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
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ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
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ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
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ieee80211_hw_set(hw, SUPPORTS_AMSDU_IN_AMPDU);
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ieee80211_hw_set(hw, TX_AMSDU);
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ieee80211_hw_set(hw, TX_FRAG_LIST);
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if (dev->cap.has_2ghz) {
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ret = mt76_init_sband_2g(dev, rates, n_rates);
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if (ret)
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return ret;
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}
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if (dev->cap.has_5ghz) {
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ret = mt76_init_sband_5g(dev, rates + 4, n_rates - 4, vht);
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if (ret)
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return ret;
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}
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return ieee80211_register_hw(hw);
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}
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EXPORT_SYMBOL_GPL(mt76_register_device);
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void mt76_unregister_device(struct mt76_dev *dev)
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{
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struct ieee80211_hw *hw = dev->hw;
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ieee80211_unregister_hw(hw);
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mt76_tx_free(dev);
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}
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EXPORT_SYMBOL_GPL(mt76_unregister_device);
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void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
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{
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if (!test_bit(MT76_STATE_RUNNING, &dev->state)) {
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dev_kfree_skb(skb);
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return;
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}
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__skb_queue_tail(&dev->rx_skb[q], skb);
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}
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EXPORT_SYMBOL_GPL(mt76_rx);
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void mt76_rx_complete(struct mt76_dev *dev, enum mt76_rxq_id q)
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{
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struct sk_buff *skb;
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while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL)
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ieee80211_rx_napi(dev->hw, NULL, skb, &dev->napi[q]);
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}
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