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path: root/drivers/net/wireless/mediatek/mt76/mt7615/main.c
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Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/main.c')
-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7615/main.c514
1 files changed, 514 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
new file mode 100644
index 0000000..87c7487
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -0,0 +1,514 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2019 MediaTek Inc.
+ *
+ * Author: Roy Luo <royluo@google.com>
+ * Ryder Lee <ryder.lee@mediatek.com>
+ * Felix Fietkau <nbd@nbd.name>
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/platform_device.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include "mt7615.h"
+
+static int mt7615_start(struct ieee80211_hw *hw)
+{
+ struct mt7615_dev *dev = hw->priv;
+
+ dev->mt76.survey_time = ktime_get_boottime();
+ set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
+ ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
+ MT7615_WATCHDOG_TIME);
+
+ return 0;
+}
+
+static void mt7615_stop(struct ieee80211_hw *hw)
+{
+ struct mt7615_dev *dev = hw->priv;
+
+ clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
+ cancel_delayed_work_sync(&dev->mt76.mac_work);
+}
+
+static int get_omac_idx(enum nl80211_iftype type, u32 mask)
+{
+ int i;
+
+ switch (type) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ /* ap use hw bssid 0 and ext bssid */
+ if (~mask & BIT(HW_BSSID_0))
+ return HW_BSSID_0;
+
+ for (i = EXT_BSSID_1; i < EXT_BSSID_END; i++)
+ if (~mask & BIT(i))
+ return i;
+
+ break;
+ case NL80211_IFTYPE_STATION:
+ /* sta use hw bssid other than 0 */
+ for (i = HW_BSSID_1; i < HW_BSSID_MAX; i++)
+ if (~mask & BIT(i))
+ return i;
+
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ };
+
+ return -1;
+}
+
+static int mt7615_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
+ struct mt7615_dev *dev = hw->priv;
+ struct mt76_txq *mtxq;
+ int idx, ret = 0;
+
+ mutex_lock(&dev->mt76.mutex);
+
+ mvif->idx = ffs(~dev->vif_mask) - 1;
+ if (mvif->idx >= MT7615_MAX_INTERFACES) {
+ ret = -ENOSPC;
+ goto out;
+ }
+
+ idx = get_omac_idx(vif->type, dev->omac_mask);
+ if (idx < 0) {
+ ret = -ENOSPC;
+ goto out;
+ }
+ mvif->omac_idx = idx;
+
+ /* TODO: DBDC support. Use band 0 for now */
+ mvif->band_idx = 0;
+ mvif->wmm_idx = mvif->idx % MT7615_MAX_WMM_SETS;
+
+ ret = mt7615_mcu_set_dev_info(dev, vif, 1);
+ if (ret)
+ goto out;
+
+ dev->vif_mask |= BIT(mvif->idx);
+ dev->omac_mask |= BIT(mvif->omac_idx);
+ idx = MT7615_WTBL_RESERVED - mvif->idx;
+ mvif->sta.wcid.idx = idx;
+ mvif->sta.wcid.hw_key_idx = -1;
+
+ rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
+ mtxq = (struct mt76_txq *)vif->txq->drv_priv;
+ mtxq->wcid = &mvif->sta.wcid;
+ mt76_txq_init(&dev->mt76, vif->txq);
+
+out:
+ mutex_unlock(&dev->mt76.mutex);
+
+ return ret;
+}
+
+static void mt7615_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
+ struct mt7615_dev *dev = hw->priv;
+ int idx = mvif->sta.wcid.idx;
+
+ /* TODO: disable beacon for the bss */
+
+ mt7615_mcu_set_dev_info(dev, vif, 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);
+ dev->omac_mask &= ~BIT(mvif->omac_idx);
+ mutex_unlock(&dev->mt76.mutex);
+}
+
+static int mt7615_set_channel(struct mt7615_dev *dev)
+{
+ int ret;
+
+ cancel_delayed_work_sync(&dev->mt76.mac_work);
+
+ mutex_lock(&dev->mt76.mutex);
+ set_bit(MT76_RESET, &dev->mt76.state);
+
+ mt7615_dfs_check_channel(dev);
+
+ mt76_set_channel(&dev->mt76);
+
+ ret = mt7615_mcu_set_channel(dev);
+ if (ret)
+ goto out;
+
+ ret = mt7615_dfs_init_radar_detector(dev);
+ mt7615_mac_cca_stats_reset(dev);
+ dev->mt76.survey_time = ktime_get_boottime();
+ /* TODO: add DBDC support */
+ mt76_rr(dev, MT_MIB_SDR16(0));
+
+out:
+ clear_bit(MT76_RESET, &dev->mt76.state);
+ mutex_unlock(&dev->mt76.mutex);
+
+ mt76_txq_schedule_all(&dev->mt76);
+ ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
+ MT7615_WATCHDOG_TIME);
+ return ret;
+}
+
+static int mt7615_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 mt7615_dev *dev = hw->priv;
+ struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
+ struct mt7615_sta *msta = sta ? (struct mt7615_sta *)sta->drv_priv :
+ &mvif->sta;
+ struct mt76_wcid *wcid = &msta->wcid;
+ int idx = key->keyidx;
+
+ /* The hardware does not support per-STA RX GTK, fallback
+ * 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;
+
+ /* fall back to sw encryption for unsupported ciphers */
+ switch (key->cipher) {
+ case WLAN_CIPHER_SUITE_AES_CMAC:
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIE;
+ break;
+ case WLAN_CIPHER_SUITE_WEP40:
+ case WLAN_CIPHER_SUITE_WEP104:
+ case WLAN_CIPHER_SUITE_TKIP:
+ case WLAN_CIPHER_SUITE_CCMP:
+ case WLAN_CIPHER_SUITE_CCMP_256:
+ case WLAN_CIPHER_SUITE_GCMP:
+ case WLAN_CIPHER_SUITE_GCMP_256:
+ case WLAN_CIPHER_SUITE_SMS4:
+ break;
+ default:
+ 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;
+ }
+ mt76_wcid_key_setup(&dev->mt76, wcid,
+ cmd == SET_KEY ? key : NULL);
+
+ return mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
+}
+
+static int mt7615_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct mt7615_dev *dev = hw->priv;
+ int ret = 0;
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ ieee80211_stop_queues(hw);
+ ret = mt7615_set_channel(dev);
+ ieee80211_wake_queues(hw);
+ }
+
+ mutex_lock(&dev->mt76.mutex);
+
+ if (changed & IEEE80211_CONF_CHANGE_POWER)
+ ret = mt7615_mcu_set_tx_power(dev);
+
+ if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+ if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
+ dev->mt76.rxfilter |= MT_WF_RFCR_DROP_OTHER_UC;
+ else
+ dev->mt76.rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;
+
+ mt76_wr(dev, MT_WF_RFCR, dev->mt76.rxfilter);
+ }
+
+ mutex_unlock(&dev->mt76.mutex);
+
+ return ret;
+}
+
+static int
+mt7615_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
+ struct mt7615_dev *dev = hw->priv;
+
+ queue += mvif->wmm_idx * MT7615_MAX_WMM_SETS;
+
+ return mt7615_mcu_set_wmm(dev, queue, params);
+}
+
+static void mt7615_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ u64 multicast)
+{
+ struct mt7615_dev *dev = hw->priv;
+ u32 flags = 0;
+
+#define MT76_FILTER(_flag, _hw) do { \
+ flags |= *total_flags & FIF_##_flag; \
+ dev->mt76.rxfilter &= ~(_hw); \
+ dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw); \
+ } while (0)
+
+ dev->mt76.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->mt76.rxfilter);
+}
+
+static void mt7615_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info,
+ u32 changed)
+{
+ struct mt7615_dev *dev = hw->priv;
+
+ mutex_lock(&dev->mt76.mutex);
+
+ if (changed & BSS_CHANGED_ASSOC)
+ mt7615_mcu_set_bss_info(dev, vif, info->assoc);
+
+ /* TODO: update beacon content
+ * BSS_CHANGED_BEACON
+ */
+
+ if (changed & BSS_CHANGED_BEACON_ENABLED) {
+ mt7615_mcu_set_bss_info(dev, vif, info->enable_beacon);
+ mt7615_mcu_wtbl_bmc(dev, vif, info->enable_beacon);
+ mt7615_mcu_set_sta_rec_bmc(dev, vif, info->enable_beacon);
+ mt7615_mcu_set_bcn(dev, vif, info->enable_beacon);
+ }
+
+ mutex_unlock(&dev->mt76.mutex);
+}
+
+static void
+mt7615_channel_switch_beacon(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct cfg80211_chan_def *chandef)
+{
+ struct mt7615_dev *dev = hw->priv;
+
+ mutex_lock(&dev->mt76.mutex);
+ mt7615_mcu_set_bcn(dev, vif, true);
+ mutex_unlock(&dev->mt76.mutex);
+}
+
+int mt7615_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
+ struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
+ struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
+ int idx;
+
+ idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1);
+ if (idx < 0)
+ return -ENOSPC;
+
+ msta->vif = mvif;
+ msta->wcid.sta = 1;
+ msta->wcid.idx = idx;
+
+ mt7615_mcu_add_wtbl(dev, vif, sta);
+ mt7615_mcu_set_sta_rec(dev, vif, sta, 1);
+
+ return 0;
+}
+
+void mt7615_sta_assoc(struct mt76_dev *mdev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
+
+ if (sta->ht_cap.ht_supported)
+ mt7615_mcu_set_ht_cap(dev, vif, sta);
+}
+
+void mt7615_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
+
+ mt7615_mcu_set_sta_rec(dev, vif, sta, 0);
+ mt7615_mcu_del_wtbl(dev, sta);
+}
+
+static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7615_dev *dev = hw->priv;
+ struct mt7615_sta *msta = (struct mt7615_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;
+ mt7615_mac_set_rates(dev, msta, NULL, msta->rates);
+ msta->rate_probe = false;
+ spin_unlock_bh(&dev->mt76.lock);
+}
+
+static void mt7615_tx(struct ieee80211_hw *hw,
+ struct ieee80211_tx_control *control,
+ struct sk_buff *skb)
+{
+ struct mt7615_dev *dev = hw->priv;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_vif *vif = info->control.vif;
+ struct mt76_wcid *wcid = &dev->mt76.global_wcid;
+
+ if (control->sta) {
+ struct mt7615_sta *sta;
+
+ sta = (struct mt7615_sta *)control->sta->drv_priv;
+ wcid = &sta->wcid;
+ }
+
+ if (vif && !control->sta) {
+ struct mt7615_vif *mvif;
+
+ mvif = (struct mt7615_vif *)vif->drv_priv;
+ wcid = &mvif->sta.wcid;
+ }
+
+ mt76_tx(&dev->mt76, control->sta, wcid, skb);
+}
+
+static int mt7615_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
+{
+ struct mt7615_dev *dev = hw->priv;
+
+ mutex_lock(&dev->mt76.mutex);
+ mt7615_mcu_set_rts_thresh(dev, val);
+ mutex_unlock(&dev->mt76.mutex);
+
+ return 0;
+}
+
+static int
+mt7615_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_ampdu_params *params)
+{
+ enum ieee80211_ampdu_mlme_action action = params->action;
+ struct mt7615_dev *dev = hw->priv;
+ struct ieee80211_sta *sta = params->sta;
+ struct ieee80211_txq *txq = sta->txq[params->tid];
+ struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
+ u16 tid = params->tid;
+ u16 ssn = params->ssn;
+ 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);
+ mt7615_mcu_set_rx_ba(dev, params, 1);
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
+ mt7615_mcu_set_rx_ba(dev, params, 0);
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ mtxq->aggr = true;
+ mtxq->send_bar = false;
+ mt7615_mcu_set_tx_ba(dev, params, 1);
+ break;
+ case IEEE80211_AMPDU_TX_STOP_FLUSH:
+ case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
+ mtxq->aggr = false;
+ mt7615_mcu_set_tx_ba(dev, params, 0);
+ 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;
+ mt7615_mcu_set_tx_ba(dev, params, 0);
+ ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
+ break;
+ }
+
+ return 0;
+}
+
+const struct ieee80211_ops mt7615_ops = {
+ .tx = mt7615_tx,
+ .start = mt7615_start,
+ .stop = mt7615_stop,
+ .add_interface = mt7615_add_interface,
+ .remove_interface = mt7615_remove_interface,
+ .config = mt7615_config,
+ .conf_tx = mt7615_conf_tx,
+ .configure_filter = mt7615_configure_filter,
+ .bss_info_changed = mt7615_bss_info_changed,
+ .sta_state = mt76_sta_state,
+ .set_key = mt7615_set_key,
+ .ampdu_action = mt7615_ampdu_action,
+ .set_rts_threshold = mt7615_set_rts_threshold,
+ .wake_tx_queue = mt76_wake_tx_queue,
+ .sta_rate_tbl_update = mt7615_sta_rate_tbl_update,
+ .sw_scan_start = mt76_sw_scan,
+ .sw_scan_complete = mt76_sw_scan_complete,
+ .release_buffered_frames = mt76_release_buffered_frames,
+ .get_txpower = mt76_get_txpower,
+ .channel_switch_beacon = mt7615_channel_switch_beacon,
+ .get_survey = mt76_get_survey,
+};