1 files changed, 499 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 000000000000..80e6b211f60b
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -0,0 +1,499 @@
+// 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;
+
+	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:
+		/* 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;
+	}
+
+	mvif->omac_idx = get_omac_idx(vif->type, dev->omac_mask);
+	if (mvif->omac_idx < 0) {
+		ret = -ENOSPC;
+		goto out;
+	}
+
+	/* TODO: DBDC support. Use band 0 and wmm 0 for now */
+	mvif->band_idx = 0;
+	mvif->wmm_idx = 0;
+
+	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 - 1 - 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,
+			      struct cfg80211_chan_def *def)
+{
+	int ret;
+
+	cancel_delayed_work_sync(&dev->mt76.mac_work);
+	set_bit(MT76_RESET, &dev->mt76.state);
+
+	mt76_set_channel(&dev->mt76);
+
+	ret = mt7615_mcu_set_channel(dev);
+	if (ret)
+		return ret;
+
+	clear_bit(MT76_RESET, &dev->mt76.state);
+
+	mt76_txq_schedule_all(&dev->mt76);
+	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
+				     MT7615_WATCHDOG_TIME);
+	return 0;
+}
+
+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;
+
+	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 mt7615_mcu_set_wtbl_key(dev, wcid->idx, 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) {
+		mutex_lock(&dev->mt76.mutex);
+
+		ieee80211_stop_queues(hw);
+		ret = mt7615_set_channel(dev, &hw->conf.chandef);
+		ieee80211_wake_queues(hw);
+
+		mutex_unlock(&dev->mt76.mutex);
+	}
+
+	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+		mutex_lock(&dev->mt76.mutex);
+
+		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_dev *dev = hw->priv;
+	static const u8 wmm_queue_map[] = {
+		[IEEE80211_AC_BK] = 0,
+		[IEEE80211_AC_BE] = 1,
+		[IEEE80211_AC_VI] = 2,
+		[IEEE80211_AC_VO] = 3,
+	};
+
+	/* TODO: hw wmm_set 1~3 */
+	return mt7615_mcu_set_wmm(dev, wmm_queue_map[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);
+
+	/* TODO: sta mode connect/disconnect
+	 * BSS_CHANGED_ASSOC | BSS_CHANGED_BSSID
+	 */
+
+	/* TODO: update beacon content
+	 * BSS_CHANGED_BEACON
+	 */
+
+	if (changed & BSS_CHANGED_BEACON_ENABLED) {
+		if (info->enable_beacon) {
+			mt7615_mcu_set_bss_info(dev, vif, 1);
+			mt7615_mcu_add_wtbl_bmc(dev, vif);
+			mt7615_mcu_set_sta_rec_bmc(dev, vif, 1);
+			mt7615_mcu_set_bcn(dev, vif, 1);
+		} else {
+			mt7615_mcu_set_sta_rec_bmc(dev, vif, 0);
+			mt7615_mcu_del_wtbl_bmc(dev, vif);
+			mt7615_mcu_set_bss_info(dev, vif, 0);
+			mt7615_mcu_set_bcn(dev, vif, 0);
+		}
+	}
+
+	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, vif, 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_mcu_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;
+		ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
+		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;
+}
+
+static void
+mt7615_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+	       const u8 *mac)
+{
+	struct mt7615_dev *dev = hw->priv;
+
+	set_bit(MT76_SCANNING, &dev->mt76.state);
+}
+
+static void
+mt7615_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+	struct mt7615_dev *dev = hw->priv;
+
+	clear_bit(MT76_SCANNING, &dev->mt76.state);
+}
+
+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 = mt7615_sw_scan,
+	.sw_scan_complete = mt7615_sw_scan_complete,
+	.release_buffered_frames = mt76_release_buffered_frames,
+};