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LibreELEC.tv/packages/linux/patches/rtlwifi/6.9/0011-wifi-rtw88-dump-firmware-debug-information-in-abnormal-state.patch

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From 20907fc069976fcf972239b7b253cf7c59c08a14 Mon Sep 17 00:00:00 2001
From: Chin-Yen Lee <timlee@realtek.com>
Date: Mon, 16 Oct 2023 13:35:54 +0800
Subject: [PATCH] wifi: rtw88: dump firmware debug information in abnormal
state
Sometimes firmware may enter strange state or infinite
loop due to unknown bug, and then it will lead critical
function fail, such as sending H2C command or changing
power mode. In these abnormal states, we add more debug
information, including hardware register status, to help
further investigation.
Signed-off-by: Chin-Yen Lee <timlee@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/20231016053554.744180-3-pkshih@realtek.com
---
drivers/net/wireless/realtek/rtw88/fw.c | 74 +++++++++++++++++++++++
drivers/net/wireless/realtek/rtw88/fw.h | 3 +
drivers/net/wireless/realtek/rtw88/main.h | 6 ++
drivers/net/wireless/realtek/rtw88/ps.c | 2 +
drivers/net/wireless/realtek/rtw88/reg.h | 23 +++++++
5 files changed, 108 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c
index a1b674e3caaa3c..acd78311c8c4a1 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.c
+++ b/drivers/net/wireless/realtek/rtw88/fw.c
@@ -17,6 +17,79 @@
#include "phy.h"
#include "mac.h"
+static const struct rtw_hw_reg_desc fw_h2c_regs[] = {
+ {REG_FWIMR, MASKDWORD, "FWIMR"},
+ {REG_FWIMR, BIT_FS_H2CCMD_INT_EN, "FWIMR enable"},
+ {REG_FWISR, MASKDWORD, "FWISR"},
+ {REG_FWISR, BIT_FS_H2CCMD_INT, "FWISR enable"},
+ {REG_HMETFR, BIT_INT_BOX_ALL, "BoxBitMap"},
+ {REG_HMEBOX0, MASKDWORD, "MSG 0"},
+ {REG_HMEBOX0_EX, MASKDWORD, "MSG_EX 0"},
+ {REG_HMEBOX1, MASKDWORD, "MSG 1"},
+ {REG_HMEBOX1_EX, MASKDWORD, "MSG_EX 1"},
+ {REG_HMEBOX2, MASKDWORD, "MSG 2"},
+ {REG_HMEBOX2_EX, MASKDWORD, "MSG_EX 2"},
+ {REG_HMEBOX3, MASKDWORD, "MSG 3"},
+ {REG_HMEBOX3_EX, MASKDWORD, "MSG_EX 3"},
+ {REG_FT1IMR, MASKDWORD, "FT1IMR"},
+ {REG_FT1IMR, BIT_FS_H2C_CMD_OK_INT_EN, "FT1IMR enable"},
+ {REG_FT1ISR, MASKDWORD, "FT1ISR"},
+ {REG_FT1ISR, BIT_FS_H2C_CMD_OK_INT, "FT1ISR enable "},
+};
+
+static const struct rtw_hw_reg_desc fw_c2h_regs[] = {
+ {REG_FWIMR, MASKDWORD, "FWIMR"},
+ {REG_FWIMR, BIT_FS_H2CCMD_INT_EN, "CPWM"},
+ {REG_FWIMR, BIT_FS_HRCV_INT_EN, "HRECV"},
+ {REG_FWISR, MASKDWORD, "FWISR"},
+ {REG_FWISR, BIT_FS_H2CCMD_INT, "CPWM"},
+ {REG_FWISR, BIT_FS_HRCV_INT, "HRECV"},
+ {REG_CPWM, MASKDWORD, "REG_CPWM"},
+};
+
+static const struct rtw_hw_reg_desc fw_core_regs[] = {
+ {REG_ARFR2_V1, MASKDWORD, "EPC"},
+ {REG_ARFRH2_V1, MASKDWORD, "BADADDR"},
+ {REG_ARFR3_V1, MASKDWORD, "CAUSE"},
+ {REG_ARFR3_V1, BIT_EXC_CODE, "ExcCode"},
+ {REG_ARFRH3_V1, MASKDWORD, "Status"},
+ {REG_ARFR4, MASKDWORD, "SP"},
+ {REG_ARFRH4, MASKDWORD, "RA"},
+ {REG_FW_DBG6, MASKDWORD, "DBG 6"},
+ {REG_FW_DBG7, MASKDWORD, "DBG 7"},
+};
+
+static void _rtw_fw_dump_dbg_info(struct rtw_dev *rtwdev,
+ const struct rtw_hw_reg_desc regs[], u32 size)
+{
+ const struct rtw_hw_reg_desc *reg;
+ u32 val;
+ int i;
+
+ for (i = 0; i < size; i++) {
+ reg = &regs[i];
+ val = rtw_read32_mask(rtwdev, reg->addr, reg->mask);
+
+ rtw_dbg(rtwdev, RTW_DBG_FW, "[%s]addr:0x%x mask:0x%x value:0x%x\n",
+ reg->desc, reg->addr, reg->mask, val);
+ }
+}
+
+void rtw_fw_dump_dbg_info(struct rtw_dev *rtwdev)
+{
+ int i;
+
+ if (!rtw_dbg_is_enabled(rtwdev, RTW_DBG_FW))
+ return;
+
+ _rtw_fw_dump_dbg_info(rtwdev, fw_h2c_regs, ARRAY_SIZE(fw_h2c_regs));
+ _rtw_fw_dump_dbg_info(rtwdev, fw_c2h_regs, ARRAY_SIZE(fw_c2h_regs));
+ for (i = 0 ; i < RTW_DEBUG_DUMP_TIMES; i++) {
+ rtw_dbg(rtwdev, RTW_DBG_FW, "Firmware Coredump %dth\n", i + 1);
+ _rtw_fw_dump_dbg_info(rtwdev, fw_core_regs, ARRAY_SIZE(fw_core_regs));
+ }
+}
+
static void rtw_fw_c2h_cmd_handle_ext(struct rtw_dev *rtwdev,
struct sk_buff *skb)
{
@@ -349,6 +422,7 @@ static void rtw_fw_send_h2c_command_register(struct rtw_dev *rtwdev,
if (ret) {
rtw_err(rtwdev, "failed to send h2c command\n");
+ rtw_fw_dump_dbg_info(rtwdev);
return;
}
diff --git a/drivers/net/wireless/realtek/rtw88/fw.h b/drivers/net/wireless/realtek/rtw88/fw.h
index 43ccdf9965ac46..84e47c71ea1255 100644
--- a/drivers/net/wireless/realtek/rtw88/fw.h
+++ b/drivers/net/wireless/realtek/rtw88/fw.h
@@ -44,6 +44,8 @@
#define RTW_OLD_PROBE_PG_CNT 2
#define RTW_PROBE_PG_CNT 4
+#define RTW_DEBUG_DUMP_TIMES 10
+
enum rtw_c2h_cmd_id {
C2H_CCX_TX_RPT = 0x03,
C2H_BT_INFO = 0x09,
@@ -808,6 +810,7 @@ static inline bool rtw_fw_feature_ext_check(struct rtw_fw_state *fw,
return !!(fw->feature_ext & feature);
}
+void rtw_fw_dump_dbg_info(struct rtw_dev *rtwdev);
void rtw_fw_c2h_cmd_rx_irqsafe(struct rtw_dev *rtwdev, u32 pkt_offset,
struct sk_buff *skb);
void rtw_fw_c2h_cmd_handle(struct rtw_dev *rtwdev, struct sk_buff *skb);
diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h
index 86dc1516effade..b6bfd4c02e2db3 100644
--- a/drivers/net/wireless/realtek/rtw88/main.h
+++ b/drivers/net/wireless/realtek/rtw88/main.h
@@ -524,6 +524,12 @@ struct rtw_hw_reg {
u32 mask;
};
+struct rtw_hw_reg_desc {
+ u32 addr;
+ u32 mask;
+ const char *desc;
+};
+
struct rtw_ltecoex_addr {
u32 ctrl;
u32 wdata;
diff --git a/drivers/net/wireless/realtek/rtw88/ps.c b/drivers/net/wireless/realtek/rtw88/ps.c
index 07e8cbd436cd81..add5a20b84320f 100644
--- a/drivers/net/wireless/realtek/rtw88/ps.c
+++ b/drivers/net/wireless/realtek/rtw88/ps.c
@@ -104,6 +104,7 @@ void rtw_power_mode_change(struct rtw_dev *rtwdev, bool enter)
*/
WARN(1, "firmware failed to ack driver for %s Deep Power mode\n",
enter ? "entering" : "leaving");
+ rtw_fw_dump_dbg_info(rtwdev);
}
}
EXPORT_SYMBOL(rtw_power_mode_change);
@@ -164,6 +165,7 @@ static void rtw_fw_leave_lps_check(struct rtw_dev *rtwdev)
if (ret) {
rtw_write32_clr(rtwdev, REG_TCR, BIT_PWRMGT_HWDATA_EN);
rtw_warn(rtwdev, "firmware failed to leave lps state\n");
+ rtw_fw_dump_dbg_info(rtwdev);
}
}
diff --git a/drivers/net/wireless/realtek/rtw88/reg.h b/drivers/net/wireless/realtek/rtw88/reg.h
index 7c6c11d50ff30f..1634f03784f171 100644
--- a/drivers/net/wireless/realtek/rtw88/reg.h
+++ b/drivers/net/wireless/realtek/rtw88/reg.h
@@ -224,12 +224,25 @@
#define REG_RXFF_BNDY 0x011C
#define REG_FE1IMR 0x0120
#define BIT_FS_RXDONE BIT(16)
+#define REG_CPWM 0x012C
+#define REG_FWIMR 0x0130
+#define BIT_FS_H2CCMD_INT_EN BIT(4)
+#define BIT_FS_HRCV_INT_EN BIT(5)
+#define REG_FWISR 0x0134
+#define BIT_FS_H2CCMD_INT BIT(4)
+#define BIT_FS_HRCV_INT BIT(5)
#define REG_PKTBUF_DBG_CTRL 0x0140
#define REG_C2HEVT 0x01A0
#define REG_MCUTST_1 0x01C0
#define REG_MCUTST_II 0x01C4
#define REG_WOWLAN_WAKE_REASON 0x01C7
#define REG_HMETFR 0x01CC
+#define BIT_INT_BOX0 BIT(0)
+#define BIT_INT_BOX1 BIT(1)
+#define BIT_INT_BOX2 BIT(2)
+#define BIT_INT_BOX3 BIT(3)
+#define BIT_INT_BOX_ALL (BIT_INT_BOX0 | BIT_INT_BOX1 | BIT_INT_BOX2 | \
+ BIT_INT_BOX3)
#define REG_HMEBOX0 0x01D0
#define REG_HMEBOX1 0x01D4
#define REG_HMEBOX2 0x01D8
@@ -338,6 +351,11 @@
#define BIT_EN_GNT_BT_AWAKE BIT(3)
#define BIT_EN_EOF_V1 BIT(2)
#define REG_DATA_SC 0x0483
+#define REG_ARFR2_V1 0x048C
+#define REG_ARFRH2_V1 0x0490
+#define REG_ARFR3_V1 0x0494
+#define BIT_EXC_CODE GENMASK(6, 2)
+#define REG_ARFRH3_V1 0x0498
#define REG_ARFR4 0x049C
#define BIT_WL_RFK BIT(0)
#define REG_ARFRH4 0x04A0
@@ -548,11 +566,16 @@
#define REG_H2C_PKT_READADDR 0x10D0
#define REG_H2C_PKT_WRITEADDR 0x10D4
+#define REG_FW_DBG6 0x10F8
#define REG_FW_DBG7 0x10FC
#define FW_KEY_MASK 0xffffff00
#define REG_CR_EXT 0x1100
+#define REG_FT1IMR 0x1138
+#define BIT_FS_H2C_CMD_OK_INT_EN BIT(25)
+#define REG_FT1ISR 0x113c
+#define BIT_FS_H2C_CMD_OK_INT BIT(25)
#define REG_DDMA_CH0SA 0x1200
#define REG_DDMA_CH0DA 0x1204
#define REG_DDMA_CH0CTRL 0x1208
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