wifi: rtw89: add DBCC H2C to notify firmware the status

To support MLO of WiFi 7, we should configure hardware as DBCC mode, and
notify this status to firmware.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20231211083341.118047-6-pkshih@realtek.com

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

@@ -2330,6 +2330,41 @@ int rtw89_fw_h2c_join_info(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif,
 	return ret;
 }
 
+int rtw89_fw_h2c_notify_dbcc(struct rtw89_dev *rtwdev, bool en)
+{
+	struct rtw89_h2c_notify_dbcc *h2c;
+	u32 len = sizeof(*h2c);
+	struct sk_buff *skb;
+	int ret;
+
+	skb = rtw89_fw_h2c_alloc_skb_with_hdr(rtwdev, len);
+	if (!skb) {
+		rtw89_err(rtwdev, "failed to alloc skb for h2c notify dbcc\n");
+		return -ENOMEM;
+	}
+	skb_put(skb, len);
+	h2c = (struct rtw89_h2c_notify_dbcc *)skb->data;
+
+	h2c->w0 = le32_encode_bits(en, RTW89_H2C_NOTIFY_DBCC_EN);
+
+	rtw89_h2c_pkt_set_hdr(rtwdev, skb, FWCMD_TYPE_H2C,
+			      H2C_CAT_MAC, H2C_CL_MAC_MEDIA_RPT,
+			      H2C_FUNC_NOTIFY_DBCC, 0, 1,
+			      len);
+
+	ret = rtw89_h2c_tx(rtwdev, skb, false);
+	if (ret) {
+		rtw89_err(rtwdev, "failed to send h2c\n");
+		goto fail;
+	}
+
+	return 0;
+fail:
+	dev_kfree_skb_any(skb);
+
+	return ret;
+}
+
 int rtw89_fw_h2c_macid_pause(struct rtw89_dev *rtwdev, u8 sh, u8 grp,
 			     bool pause)
 {

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

@@ -1685,6 +1685,12 @@ static inline void SET_JOININFO_SELF_ROLE(void *h2c, u32 val)
 	le32p_replace_bits((__le32 *)h2c, val, GENMASK(31, 30));
 }
 
+struct rtw89_h2c_notify_dbcc {
+	__le32 w0;
+} __packed;
+
+#define RTW89_H2C_NOTIFY_DBCC_EN BIT(0)
+
 static inline void SET_GENERAL_PKT_MACID(void *h2c, u32 val)
 {
 	le32p_replace_bits((__le32 *)h2c, val, GENMASK(7, 0));
@@ -3650,6 +3656,7 @@ struct rtw89_fw_h2c_rf_reg_info {
 #define H2C_CL_MAC_MEDIA_RPT		0x8
 #define H2C_FUNC_MAC_JOININFO		0x0
 #define H2C_FUNC_MAC_FWROLE_MAINTAIN	0x4
+#define H2C_FUNC_NOTIFY_DBCC		0x5
 
 /* CLASS 9 - FW offload */
 #define H2C_CL_MAC_FW_OFLD		0x9
@@ -3846,6 +3853,7 @@ int rtw89_fw_h2c_role_maintain(struct rtw89_dev *rtwdev,
 			       enum rtw89_upd_mode upd_mode);
 int rtw89_fw_h2c_join_info(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif,
 			   struct rtw89_sta *rtwsta, bool dis_conn);
+int rtw89_fw_h2c_notify_dbcc(struct rtw89_dev *rtwdev, bool en);
 int rtw89_fw_h2c_macid_pause(struct rtw89_dev *rtwdev, u8 sh, u8 grp,
 			     bool pause);
 int rtw89_fw_h2c_set_edca(struct rtw89_dev *rtwdev, struct rtw89_vif *rtwvif,