drivers/net/wireless/mediatek/mt76/mt7603/beacon.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/mediatek/mt76/mt7603/beacon.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/mediatek/mt76/mt7603/beacon.c
Extension
.c
Size
6200 bytes
Lines
226
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct beacon_bc_data {
	struct mt7603_dev *dev;
	struct sk_buff_head q;
	struct sk_buff *tail[MT7603_MAX_INTERFACES];
	int count[MT7603_MAX_INTERFACES];
};

static void
mt7603_mac_stuck_beacon_recovery(struct mt7603_dev *dev)
{
	if (dev->beacon_check % 5 != 4)
		return;

	mt76_clear(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_EN);
	mt76_set(dev, MT_SCH_4, MT_SCH_4_RESET);
	mt76_clear(dev, MT_SCH_4, MT_SCH_4_RESET);
	mt76_set(dev, MT_WPDMA_GLO_CFG, MT_WPDMA_GLO_CFG_TX_DMA_EN);

	mt76_set(dev, MT_WF_CFG_OFF_WOCCR, MT_WF_CFG_OFF_WOCCR_TMAC_GC_DIS);
	mt76_set(dev, MT_ARB_SCR, MT_ARB_SCR_TX_DISABLE);
	mt76_clear(dev, MT_ARB_SCR, MT_ARB_SCR_TX_DISABLE);
	mt76_clear(dev, MT_WF_CFG_OFF_WOCCR, MT_WF_CFG_OFF_WOCCR_TMAC_GC_DIS);
}

static void
mt7603_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
	struct mt7603_dev *dev = (struct mt7603_dev *)priv;
	struct mt76_dev *mdev = &dev->mt76;
	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
	struct sk_buff *skb = NULL;
	u32 om_idx = mvif->idx;
	u32 val;

	if (!(mdev->beacon_mask & BIT(mvif->idx)))
		return;

	skb = ieee80211_beacon_get(mt76_hw(dev), vif, 0);
	if (!skb)
		return;

	if (om_idx)
		om_idx |= 0x10;
	val = MT_DMA_FQCR0_BUSY | MT_DMA_FQCR0_MODE |
		FIELD_PREP(MT_DMA_FQCR0_TARGET_BSS, om_idx) |
		FIELD_PREP(MT_DMA_FQCR0_DEST_PORT_ID, 3) |
		FIELD_PREP(MT_DMA_FQCR0_DEST_QUEUE_ID, 8);

	spin_lock_bh(&dev->ps_lock);

	mt76_wr(dev, MT_DMA_FQCR0, val |
		FIELD_PREP(MT_DMA_FQCR0_TARGET_QID, MT_TX_HW_QUEUE_BCN));
	if (!mt76_poll(dev, MT_DMA_FQCR0, MT_DMA_FQCR0_BUSY, 0, 5000)) {
		dev->beacon_check = MT7603_WATCHDOG_TIMEOUT;
		goto out;
	}

	mt76_wr(dev, MT_DMA_FQCR0, val |
		FIELD_PREP(MT_DMA_FQCR0_TARGET_QID, MT_TX_HW_QUEUE_BMC));
	if (!mt76_poll(dev, MT_DMA_FQCR0, MT_DMA_FQCR0_BUSY, 0, 5000)) {
		dev->beacon_check = MT7603_WATCHDOG_TIMEOUT;
		goto out;
	}

	mt76_tx_queue_skb(dev, dev->mphy.q_tx[MT_TXQ_BEACON],
			  MT_TXQ_BEACON, skb, &mvif->sta.wcid, NULL);

out:
	spin_unlock_bh(&dev->ps_lock);
}

static void
mt7603_add_buffered_bc(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
	struct beacon_bc_data *data = priv;
	struct mt7603_dev *dev = data->dev;
	struct mt7603_vif *mvif = (struct mt7603_vif *)vif->drv_priv;
	struct ieee80211_tx_info *info;
	struct sk_buff *skb;

	if (!(dev->mt76.beacon_mask & BIT(mvif->idx)))
		return;

	skb = ieee80211_get_buffered_bc(mt76_hw(dev), vif);
	if (!skb)
		return;

	info = IEEE80211_SKB_CB(skb);
	info->control.vif = vif;
	info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;

Annotation

Implementation Notes