rtw89: correct use of BA CAM

BA CAM is used to ACK peer's packets, so it must be established when
IEEE80211_AMPDU_RX_START, and free it by IEEE80211_AMPDU_RX_STOP.

The hardware can support two static BA CAM entries, so I implement a bitmap
and a struct to record which entry is used and its corresponding tid. Also,
the hardware can learn and create dynamic BA CAM entries automatically if
received packets don't match static BA CAM. That means it can still work if
we don't use H2C to set static BA CAM. An exception is tid=0 should be
always allocated in static BA CAM, so an existing static BA CAM will be
replaced if it is full and peer is going to establish a BA with tid=0.

The new firmware use new format of this H2C, so I upgrade it as well.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220104012052.6911-1-pkshih@realtek.com

1 files changed, 23 insertions, 2 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/fw.h b/drivers/net/wireless/realtek/rtw89/fw.h
index 2d36dc27222f..b10f6e6a534c 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.h
+++ b/drivers/net/wireless/realtek/rtw89/fw.h
@@ -1226,6 +1226,26 @@ static inline void SET_BA_CAM_SSN(void *h2c, u32 val)
 	le32p_replace_bits((__le32 *)h2c, val, GENMASK(31, 20));
 }
 
+static inline void SET_BA_CAM_UID(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c + 1, val, GENMASK(7, 0));
+}
+
+static inline void SET_BA_CAM_STD_EN(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c + 1, val, BIT(8));
+}
+
+static inline void SET_BA_CAM_BAND(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c + 1, val, BIT(9));
+}
+
+static inline void SET_BA_CAM_ENTRY_IDX_V1(void *h2c, u32 val)
+{
+	le32p_replace_bits((__le32 *)h2c + 1, val, GENMASK(31, 28));
+}
+
 static inline void SET_LPS_PARM_MACID(void *h2c, u32 val)
 {
 	le32p_replace_bits((__le32 *)h2c, val, GENMASK(7, 0));
@@ -1785,8 +1805,9 @@ int rtw89_fw_h2c_raw(struct rtw89_dev *rtwdev, const u8 *buf, u16 len);
 void rtw89_fw_send_all_early_h2c(struct rtw89_dev *rtwdev);
 void rtw89_fw_free_all_early_h2c(struct rtw89_dev *rtwdev);
 int rtw89_fw_h2c_general_pkt(struct rtw89_dev *rtwdev, u8 macid);
-int rtw89_fw_h2c_ba_cam(struct rtw89_dev *rtwdev, bool valid, u8 macid,
-			struct ieee80211_ampdu_params *params);
+int rtw89_fw_h2c_ba_cam(struct rtw89_dev *rtwdev, struct rtw89_sta *rtwsta,
+			bool valid, struct ieee80211_ampdu_params *params);
+
 int rtw89_fw_h2c_lps_parm(struct rtw89_dev *rtwdev,
 			  struct rtw89_lps_parm *lps_param);
 struct sk_buff *rtw89_fw_h2c_alloc_skb_with_hdr(u32 len);