wifi: rtw88: Fix AP mode incorrect DTIM behavior

Broadcast and multicast packets in high queue should be transmitted
all at once during DTIM. But without proper settings, hardware fails
to recognize that there are multiple packets and fetches only one.
Fix this by signaling hardware with more data bit set when there are
packets in the high queue.
Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230616125540.36877-3-pkshih@realtek.com

drivers/net/wireless/realtek/rtw88/mac80211.c

@@ -453,6 +453,7 @@ static int rtw_ops_start_ap(struct ieee80211_hw *hw,
 	const struct rtw_chip_info *chip = rtwdev->chip;
 
 	mutex_lock(&rtwdev->mutex);
+	rtw_write32_set(rtwdev, REG_TCR, BIT_TCR_UPDATE_HGQMD);
 	rtwdev->ap_active = true;
 	rtw_store_op_chan(rtwdev, true);
 	chip->ops->phy_calibration(rtwdev);
@@ -468,6 +469,7 @@ static void rtw_ops_stop_ap(struct ieee80211_hw *hw,
 	struct rtw_dev *rtwdev = hw->priv;
 
 	mutex_lock(&rtwdev->mutex);
+	rtw_write32_clr(rtwdev, REG_TCR, BIT_TCR_UPDATE_HGQMD);
 	rtwdev->ap_active = false;
 	if (!rtw_core_check_sta_active(rtwdev))
 		rtw_clear_op_chan(rtwdev);

drivers/net/wireless/realtek/rtw88/reg.h

@@ -410,6 +410,7 @@
 #define REG_TCR			0x0604
 #define BIT_PWRMGT_HWDATA_EN	BIT(7)
 #define BIT_TCR_UPDATE_TIMIE	BIT(5)
+#define BIT_TCR_UPDATE_HGQMD	BIT(4)
 #define REG_RCR			0x0608
 #define BIT_APP_FCS		BIT(31)
 #define BIT_APP_MIC		BIT(30)

drivers/net/wireless/realtek/rtw88/tx.c

@@ -35,6 +35,10 @@ void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
 void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
 {
 	struct rtw_tx_desc *tx_desc = (struct rtw_tx_desc *)skb->data;
+	bool more_data = false;
+
+	if (pkt_info->qsel == TX_DESC_QSEL_HIGH)
+		more_data = true;
 
 	tx_desc->w0 = le32_encode_bits(pkt_info->tx_pkt_size, RTW_TX_DESC_W0_TXPKTSIZE) |
 		      le32_encode_bits(pkt_info->offset, RTW_TX_DESC_W0_OFFSET) |
@@ -45,7 +49,8 @@ void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
 	tx_desc->w1 = le32_encode_bits(pkt_info->qsel, RTW_TX_DESC_W1_QSEL) |
 		      le32_encode_bits(pkt_info->rate_id, RTW_TX_DESC_W1_RATE_ID) |
 		      le32_encode_bits(pkt_info->sec_type, RTW_TX_DESC_W1_SEC_TYPE) |
-		      le32_encode_bits(pkt_info->pkt_offset, RTW_TX_DESC_W1_PKT_OFFSET);
+		      le32_encode_bits(pkt_info->pkt_offset, RTW_TX_DESC_W1_PKT_OFFSET) |
+		      le32_encode_bits(more_data, RTW_TX_DESC_W1_MORE_DATA);
 
 	tx_desc->w2 = le32_encode_bits(pkt_info->ampdu_en, RTW_TX_DESC_W2_AGG_EN) |
 		      le32_encode_bits(pkt_info->report, RTW_TX_DESC_W2_SPE_RPT) |

drivers/net/wireless/realtek/rtw88/tx.h

@@ -31,6 +31,7 @@ struct rtw_tx_desc {
 #define RTW_TX_DESC_W1_RATE_ID GENMASK(20, 16)
 #define RTW_TX_DESC_W1_SEC_TYPE GENMASK(23, 22)
 #define RTW_TX_DESC_W1_PKT_OFFSET GENMASK(28, 24)
+#define RTW_TX_DESC_W1_MORE_DATA BIT(29)
 #define RTW_TX_DESC_W2_AGG_EN BIT(12)
 #define RTW_TX_DESC_W2_SPE_RPT BIT(19)
 #define RTW_TX_DESC_W2_AMPDU_DEN GENMASK(22, 20)

drivers/net/wireless/realtek/rtw88/usb.c

@@ -469,6 +469,9 @@ static u8 rtw_usb_tx_queue_mapping_to_qsel(struct sk_buff *skb)
 
 	if (unlikely(ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc)))
 		qsel = TX_DESC_QSEL_MGMT;
+	else if (is_broadcast_ether_addr(hdr->addr1) ||
+		 is_multicast_ether_addr(hdr->addr1))
+		qsel = TX_DESC_QSEL_HIGH;
 	else if (skb_get_queue_mapping(skb) <= IEEE80211_AC_BK)
 		qsel = skb->priority;
 	else