// SPDX-License-Identifier: ISC #include #include #include #include #include "mt7603.h" #include "mac.h" #include "eeprom.h" static int mt7603_start(struct ieee80211_hw *hw) { struct mt7603_dev *dev = hw->priv; mt7603_mac_start(dev); dev->mt76.survey_time = ktime_get_boottime(); set_bit(MT76_STATE_RUNNING, &dev->mt76.state); mt7603_mac_work(&dev->mt76.mac_work.work); return 0; } static void mt7603_stop(struct ieee80211_hw *hw) { struct mt7603_dev *dev = hw->priv; clear_bit(MT76_STATE_RUNNING, &dev->mt76.state); cancel_delayed_work_sync(&dev->mt76.mac_work); mt7603_mac_stop(dev); } static int mt7603_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv; struct mt7603_dev *dev = hw->priv; struct mt76_txq *mtxq; u8 bc_addr[ETH_ALEN]; int idx; int ret = 0; mutex_lock(&dev->mt76.mutex); mvif->idx = ffs(~dev->vif_mask) - 1; if (mvif->idx >= MT7603_MAX_INTERFACES) { ret = -ENOSPC; goto out; } mt76_wr(dev, MT_MAC_ADDR0(mvif->idx), get_unaligned_le32(vif->addr)); mt76_wr(dev, MT_MAC_ADDR1(mvif->idx), (get_unaligned_le16(vif->addr + 4) | MT_MAC_ADDR1_VALID)); if (vif->type == NL80211_IFTYPE_AP) { mt76_wr(dev, MT_BSSID0(mvif->idx), get_unaligned_le32(vif->addr)); mt76_wr(dev, MT_BSSID1(mvif->idx), (get_unaligned_le16(vif->addr + 4) | MT_BSSID1_VALID)); } idx = MT7603_WTBL_RESERVED - 1 - mvif->idx; dev->vif_mask |= BIT(mvif->idx); mvif->sta.wcid.idx = idx; mvif->sta.wcid.hw_key_idx = -1; eth_broadcast_addr(bc_addr); mt7603_wtbl_init(dev, idx, mvif->idx, bc_addr); mtxq = (struct mt76_txq *)vif->txq->drv_priv; mtxq->wcid = &mvif->sta.wcid; mt76_txq_init(&dev->mt76, vif->txq); rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid); out: mutex_unlock(&dev->mt76.mutex); return ret; } static void mt7603_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) { struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv; struct mt7603_dev *dev = hw->priv; int idx = mvif->sta.wcid.idx; mt76_wr(dev, MT_MAC_ADDR0(mvif->idx), 0); mt76_wr(dev, MT_MAC_ADDR1(mvif->idx), 0); mt76_wr(dev, MT_BSSID0(mvif->idx), 0); mt76_wr(dev, MT_BSSID1(mvif->idx), 0); mt7603_beacon_set_timer(dev, mvif->idx, 0); rcu_assign_pointer(dev->mt76.wcid[idx], NULL); mt76_txq_remove(&dev->mt76, vif->txq); mutex_lock(&dev->mt76.mutex); dev->vif_mask &= ~BIT(mvif->idx); mutex_unlock(&dev->mt76.mutex); } void mt7603_init_edcca(struct mt7603_dev *dev) { /* Set lower signal level to -65dBm */ mt76_rmw_field(dev, MT_RXTD(8), MT_RXTD_8_LOWER_SIGNAL, 0x23); /* clear previous energy detect monitor results */ mt76_rr(dev, MT_MIB_STAT_ED); if (dev->ed_monitor) mt76_set(dev, MT_MIB_CTL, MT_MIB_CTL_ED_TIME); else mt76_clear(dev, MT_MIB_CTL, MT_MIB_CTL_ED_TIME); dev->ed_strict_mode = 0xff; dev->ed_strong_signal = 0; dev->ed_time = ktime_get_boottime(); mt7603_edcca_set_strict(dev, false); } static int mt7603_set_channel(struct mt7603_dev *dev, struct cfg80211_chan_def *def) { u8 *rssi_data = (u8 *)dev->mt76.eeprom.data; int idx, ret; u8 bw = MT_BW_20; bool failed = false; cancel_delayed_work_sync(&dev->mt76.mac_work); tasklet_disable(&dev->mt76.pre_tbtt_tasklet); mutex_lock(&dev->mt76.mutex); set_bit(MT76_RESET, &dev->mt76.state); mt7603_beacon_set_timer(dev, -1, 0); mt76_set_channel(&dev->mt76); mt7603_mac_stop(dev); if (def->width == NL80211_CHAN_WIDTH_40) bw = MT_BW_40; dev->mt76.chandef = *def; mt76_rmw_field(dev, MT_AGG_BWCR, MT_AGG_BWCR_BW, bw); ret = mt7603_mcu_set_channel(dev); if (ret) { failed = true; goto out; } if (def->chan->band == NL80211_BAND_5GHZ) { idx = 1; rssi_data += MT_EE_RSSI_OFFSET_5G; } else { idx = 0; rssi_data += MT_EE_RSSI_OFFSET_2G; } memcpy(dev->rssi_offset, rssi_data, sizeof(dev->rssi_offset)); idx |= (def->chan - mt76_hw(dev)->wiphy->bands[def->chan->band]->channels) << 1; mt76_wr(dev, MT_WF_RMAC_CH_FREQ, idx); mt7603_mac_set_timing(dev); mt7603_mac_start(dev); clear_bit(MT76_RESET, &dev->mt76.state); mt76_txq_schedule_all(&dev->mt76); ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work, msecs_to_jiffies(MT7603_WATCHDOG_TIME)); /* reset channel stats */ mt76_clear(dev, MT_MIB_CTL, MT_MIB_CTL_READ_CLR_DIS); mt76_set(dev, MT_MIB_CTL, MT_MIB_CTL_CCA_NAV_TX | MT_MIB_CTL_PSCCA_TIME); mt76_rr(dev, MT_MIB_STAT_PSCCA); mt7603_cca_stats_reset(dev); dev->mt76.survey_time = ktime_get_boottime(); mt7603_init_edcca(dev); out: if (!(mt76_hw(dev)->conf.flags & IEEE80211_CONF_OFFCHANNEL)) mt7603_beacon_set_timer(dev, -1, dev->mt76.beacon_int); mutex_unlock(&dev->mt76.mutex); tasklet_enable(&dev->mt76.pre_tbtt_tasklet); if (failed) mt7603_mac_work(&dev->mt76.mac_work.work); return ret; } static int mt7603_config(struct ieee80211_hw *hw, u32 changed) { struct mt7603_dev *dev = hw->priv; int ret = 0; if (changed & (IEEE80211_CONF_CHANGE_CHANNEL | IEEE80211_CONF_CHANGE_POWER)) { ieee80211_stop_queues(hw); ret = mt7603_set_channel(dev, &hw->conf.chandef); ieee80211_wake_queues(hw); } if (changed & IEEE80211_CONF_CHANGE_MONITOR) { mutex_lock(&dev->mt76.mutex); if (!(hw->conf.flags & IEEE80211_CONF_MONITOR)) dev->rxfilter |= MT_WF_RFCR_DROP_OTHER_UC; else dev->rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC; mt76_wr(dev, MT_WF_RFCR, dev->rxfilter); mutex_unlock(&dev->mt76.mutex); } return ret; } static void mt7603_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, u64 multicast) { struct mt7603_dev *dev = hw->priv; u32 flags = 0; #define MT76_FILTER(_flag, _hw) do { \ flags |= *total_flags & FIF_##_flag; \ dev->rxfilter &= ~(_hw); \ dev->rxfilter |= !(flags & FIF_##_flag) * (_hw); \ } while (0) dev->rxfilter &= ~(MT_WF_RFCR_DROP_OTHER_BSS | MT_WF_RFCR_DROP_OTHER_BEACON | MT_WF_RFCR_DROP_FRAME_REPORT | MT_WF_RFCR_DROP_PROBEREQ | MT_WF_RFCR_DROP_MCAST_FILTERED | MT_WF_RFCR_DROP_MCAST | MT_WF_RFCR_DROP_BCAST | MT_WF_RFCR_DROP_DUPLICATE | MT_WF_RFCR_DROP_A2_BSSID | MT_WF_RFCR_DROP_UNWANTED_CTL | MT_WF_RFCR_DROP_STBC_MULTI); MT76_FILTER(OTHER_BSS, MT_WF_RFCR_DROP_OTHER_TIM | MT_WF_RFCR_DROP_A3_MAC | MT_WF_RFCR_DROP_A3_BSSID); MT76_FILTER(FCSFAIL, MT_WF_RFCR_DROP_FCSFAIL); MT76_FILTER(CONTROL, MT_WF_RFCR_DROP_CTS | MT_WF_RFCR_DROP_RTS | MT_WF_RFCR_DROP_CTL_RSV | MT_WF_RFCR_DROP_NDPA); *total_flags = flags; mt76_wr(dev, MT_WF_RFCR, dev->rxfilter); } static void mt7603_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_bss_conf *info, u32 changed) { struct mt7603_dev *dev = hw->priv; struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv; mutex_lock(&dev->mt76.mutex); if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BSSID)) { if (info->assoc || info->ibss_joined) { mt76_wr(dev, MT_BSSID0(mvif->idx), get_unaligned_le32(info->bssid)); mt76_wr(dev, MT_BSSID1(mvif->idx), (get_unaligned_le16(info->bssid + 4) | MT_BSSID1_VALID)); } else { mt76_wr(dev, MT_BSSID0(mvif->idx), 0); mt76_wr(dev, MT_BSSID1(mvif->idx), 0); } } if (changed & BSS_CHANGED_ERP_SLOT) { int slottime = info->use_short_slot ? 9 : 20; if (slottime != dev->slottime) { dev->slottime = slottime; mt7603_mac_set_timing(dev); } } if (changed & (BSS_CHANGED_BEACON_ENABLED | BSS_CHANGED_BEACON_INT)) { int beacon_int = !!info->enable_beacon * info->beacon_int; tasklet_disable(&dev->mt76.pre_tbtt_tasklet); mt7603_beacon_set_timer(dev, mvif->idx, beacon_int); tasklet_enable(&dev->mt76.pre_tbtt_tasklet); } mutex_unlock(&dev->mt76.mutex); } int mt7603_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76); struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv; int idx; int ret = 0; idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7603_WTBL_STA - 1); if (idx < 0) return -ENOSPC; __skb_queue_head_init(&msta->psq); msta->ps = ~0; msta->smps = ~0; msta->wcid.sta = 1; msta->wcid.idx = idx; mt7603_wtbl_init(dev, idx, mvif->idx, sta->addr); mt7603_wtbl_set_ps(dev, msta, false); if (vif->type == NL80211_IFTYPE_AP) set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags); return ret; } void mt7603_sta_assoc(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76); mt7603_wtbl_update_cap(dev, sta); } void mt7603_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76); struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; spin_lock_bh(&dev->ps_lock); __skb_queue_purge(&msta->psq); mt7603_filter_tx(dev, wcid->idx, true); spin_unlock_bh(&dev->ps_lock); mt7603_wtbl_clear(dev, wcid->idx); } static void mt7603_ps_tx_list(struct mt7603_dev *dev, struct sk_buff_head *list) { struct sk_buff *skb; while ((skb = __skb_dequeue(list)) != NULL) mt76_tx_queue_skb_raw(dev, skb_get_queue_mapping(skb), skb, 0); } void mt7603_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps) { struct mt7603_dev *dev = container_of(mdev, struct mt7603_dev, mt76); struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; struct sk_buff_head list; mt76_stop_tx_queues(&dev->mt76, sta, true); mt7603_wtbl_set_ps(dev, msta, ps); if (ps) return; __skb_queue_head_init(&list); spin_lock_bh(&dev->ps_lock); skb_queue_splice_tail_init(&msta->psq, &list); spin_unlock_bh(&dev->ps_lock); mt7603_ps_tx_list(dev, &list); } static void mt7603_ps_set_more_data(struct sk_buff *skb) { struct ieee80211_hdr *hdr; hdr = (struct ieee80211_hdr *)&skb->data[MT_TXD_SIZE]; hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA); } static void mt7603_release_buffered_frames(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u16 tids, int nframes, enum ieee80211_frame_release_type reason, bool more_data) { struct mt7603_dev *dev = hw->priv; struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; struct sk_buff_head list; struct sk_buff *skb, *tmp; __skb_queue_head_init(&list); mt7603_wtbl_set_ps(dev, msta, false); spin_lock_bh(&dev->ps_lock); skb_queue_walk_safe(&msta->psq, skb, tmp) { if (!nframes) break; if (!(tids & BIT(skb->priority))) continue; skb_set_queue_mapping(skb, MT_TXQ_PSD); __skb_unlink(skb, &msta->psq); mt7603_ps_set_more_data(skb); __skb_queue_tail(&list, skb); nframes--; } spin_unlock_bh(&dev->ps_lock); if (!skb_queue_empty(&list)) ieee80211_sta_eosp(sta); mt7603_ps_tx_list(dev, &list); if (nframes) mt76_release_buffered_frames(hw, sta, tids, nframes, reason, more_data); } static int mt7603_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, struct ieee80211_vif *vif, struct ieee80211_sta *sta, struct ieee80211_key_conf *key) { struct mt7603_dev *dev = hw->priv; struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv; struct mt7603_sta *msta = sta ? (struct mt7603_sta *)sta->drv_priv : &mvif->sta; struct mt76_wcid *wcid = &msta->wcid; int idx = key->keyidx; /* fall back to sw encryption for unsupported ciphers */ switch (key->cipher) { case WLAN_CIPHER_SUITE_TKIP: case WLAN_CIPHER_SUITE_CCMP: break; default: return -EOPNOTSUPP; } /* * The hardware does not support per-STA RX GTK, fall back * to software mode for these. */ if ((vif->type == NL80211_IFTYPE_ADHOC || vif->type == NL80211_IFTYPE_MESH_POINT) && (key->cipher == WLAN_CIPHER_SUITE_TKIP || key->cipher == WLAN_CIPHER_SUITE_CCMP) && !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) return -EOPNOTSUPP; if (cmd == SET_KEY) { key->hw_key_idx = wcid->idx; wcid->hw_key_idx = idx; } else { if (idx == wcid->hw_key_idx) wcid->hw_key_idx = -1; key = NULL; } mt76_wcid_key_setup(&dev->mt76, wcid, key); return mt7603_wtbl_set_key(dev, wcid->idx, key); } static int mt7603_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue, const struct ieee80211_tx_queue_params *params) { struct mt7603_dev *dev = hw->priv; u16 cw_min = (1 << 5) - 1; u16 cw_max = (1 << 10) - 1; u32 val; queue = dev->mt76.q_tx[queue].q->hw_idx; if (params->cw_min) cw_min = params->cw_min; if (params->cw_max) cw_max = params->cw_max; mutex_lock(&dev->mt76.mutex); mt7603_mac_stop(dev); val = mt76_rr(dev, MT_WMM_TXOP(queue)); val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(queue)); val |= params->txop << MT_WMM_TXOP_SHIFT(queue); mt76_wr(dev, MT_WMM_TXOP(queue), val); val = mt76_rr(dev, MT_WMM_AIFSN); val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(queue)); val |= params->aifs << MT_WMM_AIFSN_SHIFT(queue); mt76_wr(dev, MT_WMM_AIFSN, val); val = mt76_rr(dev, MT_WMM_CWMIN); val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(queue)); val |= cw_min << MT_WMM_CWMIN_SHIFT(queue); mt76_wr(dev, MT_WMM_CWMIN, val); val = mt76_rr(dev, MT_WMM_CWMAX(queue)); val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(queue)); val |= cw_max << MT_WMM_CWMAX_SHIFT(queue); mt76_wr(dev, MT_WMM_CWMAX(queue), val); mt7603_mac_start(dev); mutex_unlock(&dev->mt76.mutex); return 0; } static void mt7603_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u32 queues, bool drop) { } static int mt7603_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_ampdu_params *params) { enum ieee80211_ampdu_mlme_action action = params->action; struct mt7603_dev *dev = hw->priv; struct ieee80211_sta *sta = params->sta; struct ieee80211_txq *txq = sta->txq[params->tid]; struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; u16 tid = params->tid; u16 ssn = params->ssn; u8 ba_size = params->buf_size; struct mt76_txq *mtxq; if (!txq) return -EINVAL; mtxq = (struct mt76_txq *)txq->drv_priv; switch (action) { case IEEE80211_AMPDU_RX_START: mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, ssn, params->buf_size); mt7603_mac_rx_ba_reset(dev, sta->addr, tid); break; case IEEE80211_AMPDU_RX_STOP: mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid); break; case IEEE80211_AMPDU_TX_OPERATIONAL: mtxq->aggr = true; mtxq->send_bar = false; mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, ba_size); break; case IEEE80211_AMPDU_TX_STOP_FLUSH: case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: mtxq->aggr = false; mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, -1); break; case IEEE80211_AMPDU_TX_START: mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn); ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); break; case IEEE80211_AMPDU_TX_STOP_CONT: mtxq->aggr = false; mt7603_mac_tx_ba_reset(dev, msta->wcid.idx, tid, -1); ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); break; } return 0; } static void mt7603_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta) { struct mt7603_dev *dev = hw->priv; struct mt7603_sta *msta = (struct mt7603_sta *)sta->drv_priv; struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates); int i; spin_lock_bh(&dev->mt76.lock); for (i = 0; i < ARRAY_SIZE(msta->rates); i++) { msta->rates[i].idx = sta_rates->rate[i].idx; msta->rates[i].count = sta_rates->rate[i].count; msta->rates[i].flags = sta_rates->rate[i].flags; if (msta->rates[i].idx < 0 || !msta->rates[i].count) break; } msta->n_rates = i; mt7603_wtbl_set_rates(dev, msta, NULL, msta->rates); msta->rate_probe = false; mt7603_wtbl_set_smps(dev, msta, sta->smps_mode == IEEE80211_SMPS_DYNAMIC); spin_unlock_bh(&dev->mt76.lock); } static void mt7603_set_coverage_class(struct ieee80211_hw *hw, s16 coverage_class) { struct mt7603_dev *dev = hw->priv; dev->coverage_class = coverage_class; mt7603_mac_set_timing(dev); } static void mt7603_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, struct sk_buff *skb) { struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); struct ieee80211_vif *vif = info->control.vif; struct mt7603_dev *dev = hw->priv; struct mt76_wcid *wcid = &dev->global_sta.wcid; if (control->sta) { struct mt7603_sta *msta; msta = (struct mt7603_sta *)control->sta->drv_priv; wcid = &msta->wcid; } else if (vif) { struct mt7603_vif *mvif; mvif = (struct mt7603_vif *)vif->drv_priv; wcid = &mvif->sta.wcid; } mt76_tx(&dev->mt76, control->sta, wcid, skb); } const struct ieee80211_ops mt7603_ops = { .tx = mt7603_tx, .start = mt7603_start, .stop = mt7603_stop, .add_interface = mt7603_add_interface, .remove_interface = mt7603_remove_interface, .config = mt7603_config, .configure_filter = mt7603_configure_filter, .bss_info_changed = mt7603_bss_info_changed, .sta_state = mt76_sta_state, .set_key = mt7603_set_key, .conf_tx = mt7603_conf_tx, .sw_scan_start = mt76_sw_scan, .sw_scan_complete = mt76_sw_scan_complete, .flush = mt7603_flush, .ampdu_action = mt7603_ampdu_action, .get_txpower = mt76_get_txpower, .wake_tx_queue = mt76_wake_tx_queue, .sta_rate_tbl_update = mt7603_sta_rate_tbl_update, .release_buffered_frames = mt7603_release_buffered_frames, .set_coverage_class = mt7603_set_coverage_class, .set_tim = mt76_set_tim, .get_survey = mt76_get_survey, }; MODULE_LICENSE("Dual BSD/GPL"); static int __init mt7603_init(void) { int ret; ret = platform_driver_register(&mt76_wmac_driver); if (ret) return ret; #ifdef CONFIG_PCI ret = pci_register_driver(&mt7603_pci_driver); if (ret) platform_driver_unregister(&mt76_wmac_driver); #endif return ret; } static void __exit mt7603_exit(void) { #ifdef CONFIG_PCI pci_unregister_driver(&mt7603_pci_driver); #endif platform_driver_unregister(&mt76_wmac_driver); } module_init(mt7603_init); module_exit(mt7603_exit);