rtw89: 8852c: modify PCIE prebkf time

Prebkf time is to inform generating tx command if remaining backoff
time less than this setting value.
It might cause SER if generating tx command early in security mode.

Signed-off-by: Chia-Yuan Li <leo.li@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/20220704023453.19935-6-pkshih@realtek.com

diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index b90ab56b1c771f7e5ae99a5eed1cbf1bdd9d7625..cc6e7e37c6968a1057035c148ace24d37468876e 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -1747,6 +1747,7 @@ static int scheduler_init(struct rtw89_dev *rtwdev, u8 mac_idx)
 {
        u32 ret;
        u32 reg;
+       u32 val;
 
        ret = rtw89_mac_check_mac_en(rtwdev, mac_idx, RTW89_CMAC_SEL);
        if (ret)
@@ -1764,7 +1765,16 @@ static int scheduler_init(struct rtw89_dev *rtwdev, u8 mac_idx)
        rtw89_write32_clr(rtwdev, reg, B_AX_BTCCA_EN);
 
        reg = rtw89_mac_reg_by_idx(R_AX_PREBKF_CFG_0, mac_idx);
-       rtw89_write32_mask(rtwdev, reg, B_AX_PREBKF_TIME_MASK, SCH_PREBKF_24US);
+       if (rtwdev->chip->chip_id == RTL8852C) {
+               val = rtw89_read32_mask(rtwdev, R_AX_SEC_ENG_CTRL,
+                                       B_AX_TX_PARTIAL_MODE);
+               if (!val)
+                       rtw89_write32_mask(rtwdev, reg, B_AX_PREBKF_TIME_MASK,
+                                          SCH_PREBKF_24US);
+       } else {
+               rtw89_write32_mask(rtwdev, reg, B_AX_PREBKF_TIME_MASK,
+                                  SCH_PREBKF_24US);
+       }
 
        return 0;
 }