rtw89: download beacon content to firmware

Firmware sends out beacon content generated by mac80211, and then stations
can receive beacon and work with this AP properly. Also, we download
beacon content again if TIM is changed.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220107034239.22002-4-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/fw.c

@@ -928,6 +928,59 @@ int rtw89_fw_h2c_txtime_cmac_tbl(struct rtw89_dev *rtwdev,
 	return -EBUSY;
 }
 
+#define H2C_BCN_BASE_LEN 12
+int rtw89_fw_h2c_update_beacon(struct rtw89_dev *rtwdev,
+			       struct rtw89_vif *rtwvif)
+{
+	struct rtw89_hal *hal = &rtwdev->hal;
+	struct ieee80211_vif *vif = rtwvif_to_vif(rtwvif);
+	struct sk_buff *skb;
+	struct sk_buff *skb_beacon;
+	u16 tim_offset;
+	int bcn_total_len;
+
+	skb_beacon = ieee80211_beacon_get_tim(rtwdev->hw, vif, &tim_offset, NULL);
+	if (!skb_beacon) {
+		rtw89_err(rtwdev, "failed to get beacon skb\n");
+		return -ENOMEM;
+	}
+
+	bcn_total_len = H2C_BCN_BASE_LEN + skb_beacon->len;
+	skb = rtw89_fw_h2c_alloc_skb_with_hdr(bcn_total_len);
+	if (!skb) {
+		rtw89_err(rtwdev, "failed to alloc skb for fw dl\n");
+		dev_kfree_skb_any(skb_beacon);
+		return -ENOMEM;
+	}
+	skb_put(skb, H2C_BCN_BASE_LEN);
+
+	SET_BCN_UPD_PORT(skb->data, rtwvif->port);
+	SET_BCN_UPD_MBSSID(skb->data, 0);
+	SET_BCN_UPD_BAND(skb->data, rtwvif->mac_idx);
+	SET_BCN_UPD_GRP_IE_OFST(skb->data, tim_offset);
+	SET_BCN_UPD_MACID(skb->data, rtwvif->mac_id);
+	SET_BCN_UPD_SSN_SEL(skb->data, RTW89_MGMT_HW_SSN_SEL);
+	SET_BCN_UPD_SSN_MODE(skb->data, RTW89_MGMT_HW_SEQ_MODE);
+	SET_BCN_UPD_RATE(skb->data, hal->current_band_type == RTW89_BAND_2G ?
+				    RTW89_HW_RATE_CCK1 : RTW89_HW_RATE_OFDM6);
+
+	skb_put_data(skb, skb_beacon->data, skb_beacon->len);
+	dev_kfree_skb_any(skb_beacon);
+
+	rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
+			      H2C_CAT_MAC, H2C_CL_MAC_FR_EXCHG,
+			      H2C_FUNC_MAC_BCN_UPD, 0, 1,
+			      bcn_total_len);
+
+	if (rtw89_h2c_tx(rtwdev, skb, false)) {
+		rtw89_err(rtwdev, "failed to send h2c\n");
+		dev_kfree_skb_any(skb);
+		return -EBUSY;
+	}
+
+	return 0;
+}
+
 #define H2C_VIF_MAINTAIN_LEN 4
 int rtw89_fw_h2c_vif_maintain(struct rtw89_dev *rtwdev,
 			      struct rtw89_vif *rtwvif,

drivers/net/wireless/realtek/rtw89/fw.h

@@ -1056,6 +1056,106 @@ static inline void SET_CMC_TBL_CSI_BW(void *table, u32 val)
 			   GENMASK(31, 30));
 }
 
+static inline void SET_BCN_UPD_PORT(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c, val, GENMASK(7, 0));
+}
+
+static inline void SET_BCN_UPD_MBSSID(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c, val, GENMASK(15, 8));
+}
+
+static inline void SET_BCN_UPD_BAND(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c, val, GENMASK(23, 16));
+}
+
+static inline void SET_BCN_UPD_GRP_IE_OFST(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c, (val - 24) | BIT(7), GENMASK(31, 24));
+}
+
+static inline void SET_BCN_UPD_MACID(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 1, val, GENMASK(7, 0));
+}
+
+static inline void SET_BCN_UPD_SSN_SEL(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 1, val, GENMASK(9, 8));
+}
+
+static inline void SET_BCN_UPD_SSN_MODE(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 1, val, GENMASK(11, 10));
+}
+
+static inline void SET_BCN_UPD_RATE(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 1, val, GENMASK(20, 12));
+}
+
+static inline void SET_BCN_UPD_TXPWR(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 1, val, GENMASK(23, 21));
+}
+
+static inline void SET_BCN_UPD_TXINFO_CTRL_EN(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val, BIT(0));
+}
+
+static inline void SET_BCN_UPD_NTX_PATH_EN(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(4, 1));
+}
+
+static inline void SET_BCN_UPD_PATH_MAP_A(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(6, 5));
+}
+
+static inline void SET_BCN_UPD_PATH_MAP_B(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(8, 7));
+}
+
+static inline void SET_BCN_UPD_PATH_MAP_C(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(10, 9));
+}
+
+static inline void SET_BCN_UPD_PATH_MAP_D(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(12, 11));
+}
+
+static inline void SET_BCN_UPD_PATH_ANTSEL_A(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  BIT(13));
+}
+
+static inline void SET_BCN_UPD_PATH_ANTSEL_B(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  BIT(14));
+}
+
+static inline void SET_BCN_UPD_PATH_ANTSEL_C(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  BIT(15));
+}
+
+static inline void SET_BCN_UPD_PATH_ANTSEL_D(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  BIT(16));
+}
+
+static inline void SET_BCN_UPD_CSA_OFST(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)(h2c) + 2, val,  GENMASK(31, 17));
+}
+
 static inline void SET_FWROLE_MAINTAIN_MACID(void *h2c, u32 val)
 {
 	le32p_replace_bits((__le32 *)h2c, val, GENMASK(7, 0));
@@ -1729,6 +1829,7 @@ struct rtw89_fw_h2c_rf_reg_info {
 /* CLASS 5 - Frame Exchange */
 #define H2C_CL_MAC_FR_EXCHG		0x5
 #define H2C_FUNC_MAC_CCTLINFO_UD	0x2
+#define H2C_FUNC_MAC_BCN_UPD		0x5
 
 /* CLASS 6 - Address CAM */
 #define H2C_CL_MAC_ADDR_CAM_UPDATE	0x6
@@ -1776,6 +1877,8 @@ int rtw89_fw_h2c_assoc_cmac_tbl(struct rtw89_dev *rtwdev,
 				struct ieee80211_sta *sta);
 int rtw89_fw_h2c_txtime_cmac_tbl(struct rtw89_dev *rtwdev,
 				 struct rtw89_sta *rtwsta);
+int rtw89_fw_h2c_update_beacon(struct rtw89_dev *rtwdev,
+			       struct rtw89_vif *rtwvif);
 int rtw89_fw_h2c_cam(struct rtw89_dev *rtwdev, struct rtw89_vif *vif,
 		     struct rtw89_sta *rtwsta, const u8 *scan_mac_addr);
 void rtw89_fw_c2h_irqsafe(struct rtw89_dev *rtwdev, struct sk_buff *c2h);

drivers/net/wireless/realtek/rtw89/mac80211.c

@@ -349,6 +349,9 @@ static void rtw89_ops_bss_info_changed(struct ieee80211_hw *hw,
 		rtw89_fw_h2c_cam(rtwdev, rtwvif, NULL, NULL);
 	}
 
+	if (changed & BSS_CHANGED_BEACON)
+		rtw89_fw_h2c_update_beacon(rtwdev, rtwvif);
+
 	if (changed & BSS_CHANGED_ERP_SLOT)
 		rtw89_conf_tx(rtwdev, rtwvif);