wifi: rtw89: deal with RXI300 error

RXI300 is a HW design to maintain stuffs across BUS, e.g. AXI, AHB, APB.
It will feedback an error when host does an invalid BUS operation.
For example,
* BUS master request without power/clock on.
* host reads/writes/accesses an invalid address.

They might lead to problems such as BUS timeout, platform hang, etc. So,
once if RXI300 feedback an error, it notifies that driver need a L2 SER
(system error recovery) to reset things.

Previously, driver did not parse the error scenario for RXI300. We add
it and assign a corresponding error code which will make SER flow do L2
reset.

Signed-off-by: Zong-Zhe Yang <kevin_yang@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/20230119063529.61563-3-pkshih@realtek.com

diff --git a/drivers/net/wireless/realtek/rtw89/mac.c b/drivers/net/wireless/realtek/rtw89/mac.c
index 9e73ef6..05a5ad7 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/mac.c
+++ b/drivers/net/wireless/realtek/rtw89/mac.c
@@ -623,7 +623,8 @@ static void rtw89_mac_dump_err_status(struct rtw89_dev *rtwdev,
        if (err != MAC_AX_ERR_L1_ERR_DMAC &&
            err != MAC_AX_ERR_L0_PROMOTE_TO_L1 &&
            err != MAC_AX_ERR_L0_ERR_CMAC0 &&
-           err != MAC_AX_ERR_L0_ERR_CMAC1)
+           err != MAC_AX_ERR_L0_ERR_CMAC1 &&
+           err != MAC_AX_ERR_RXI300)
                return;
 
        rtw89_info(rtwdev, "--->\nerr=0x%x\n", err);
@@ -663,6 +664,8 @@ u32 rtw89_mac_get_err_status(struct rtw89_dev *rtwdev)
                err = MAC_AX_ERR_CPU_EXCEPTION;
        else if (err_scnr == RTW89_WCPU_ASSERTION)
                err = MAC_AX_ERR_ASSERTION;
+       else if (err_scnr == RTW89_RXI300_ERROR)
+               err = MAC_AX_ERR_RXI300;
 
        rtw89_fw_st_dbg_dump(rtwdev);
        rtw89_mac_dump_err_status(rtwdev, err);

diff --git a/drivers/net/wireless/realtek/rtw89/mac.h b/drivers/net/wireless/realtek/rtw89/mac.h
index 553b38a..8064d39 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/mac.h
+++ b/drivers/net/wireless/realtek/rtw89/mac.h
@@ -623,6 +623,7 @@ struct rtw89_mac_dle_dfi_qempty {
 };
 
 enum rtw89_mac_error_scenario {
+       RTW89_RXI300_ERROR              = 1,
        RTW89_WCPU_CPU_EXCEPTION        = 2,
        RTW89_WCPU_ASSERTION            = 3,
 };
@@ -769,6 +770,7 @@ enum mac_ax_err_info {
        MAC_AX_ERR_L2_ERR_WDT_TIMEOUT_INT = 0x2599,
        MAC_AX_ERR_CPU_EXCEPTION = 0x3000,
        MAC_AX_ERR_ASSERTION = 0x4000,
+       MAC_AX_ERR_RXI300 = 0x5000,
        MAC_AX_GET_ERR_MAX,
        MAC_AX_DUMP_SHAREBUFF_INDICATOR = 0x80000000,