mt76: mt7915: add more statistics from fw_util debugfs knobs

Print out exception state and program counters of WA/WM MCUs.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

@@ -597,6 +597,12 @@ mt7915_fw_util_wm_show(struct seq_file *file, void *data)
 {
 	struct mt7915_dev *dev = file->private;
 
+	seq_printf(file, "Program counter: 0x%x\n", mt76_rr(dev, MT_WM_MCU_PC));
+	seq_printf(file, "Exception state: 0x%x\n",
+		   is_mt7915(&dev->mt76) ?
+		   (u32)mt76_get_field(dev, MT_FW_EXCEPTION, GENMASK(15, 8)) :
+		   (u32)mt76_get_field(dev, MT_FW_EXCEPTION, GENMASK(7, 0)));
+
 	if (dev->fw.debug_wm) {
 		seq_printf(file, "Busy: %u%%  Peak busy: %u%%\n",
 			   mt76_rr(dev, MT_CPU_UTIL_BUSY_PCT),
@@ -616,6 +622,8 @@ mt7915_fw_util_wa_show(struct seq_file *file, void *data)
 {
 	struct mt7915_dev *dev = file->private;
 
+	seq_printf(file, "Program counter: 0x%x\n", mt76_rr(dev, MT_WA_MCU_PC));
+
 	if (dev->fw.debug_wa)
 		return mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(QUERY),
 					 MCU_WA_PARAM_CPU_UTIL, 0, 0);

drivers/net/wireless/mediatek/mt76/mt7915/mmio.c

@@ -22,6 +22,7 @@ static const u32 mt7915_reg[] = {
 	[WFDMA_EXT_CSR_ADDR]	= 0xd7000,
 	[CBTOP1_PHY_END]	= 0x77ffffff,
 	[INFRA_MCU_ADDR_END]	= 0x7c3fffff,
+	[FW_EXCEPTION_ADDR]	= 0x219848,
 	[SWDEF_BASE_ADDR]	= 0x41f200,
 };
 
@@ -37,6 +38,7 @@ static const u32 mt7916_reg[] = {
 	[WFDMA_EXT_CSR_ADDR]	= 0xd7000,
 	[CBTOP1_PHY_END]	= 0x7fffffff,
 	[INFRA_MCU_ADDR_END]	= 0x7c085fff,
+	[FW_EXCEPTION_ADDR]	= 0x022050bc,
 	[SWDEF_BASE_ADDR]	= 0x411400,
 };
 
@@ -52,6 +54,7 @@ static const u32 mt7986_reg[] = {
 	[WFDMA_EXT_CSR_ADDR]	= 0x27000,
 	[CBTOP1_PHY_END]	= 0x7fffffff,
 	[INFRA_MCU_ADDR_END]	= 0x7c085fff,
+	[FW_EXCEPTION_ADDR]	= 0x02204ffc,
 	[SWDEF_BASE_ADDR]	= 0x411400,
 };
 

drivers/net/wireless/mediatek/mt76/mt7915/regs.h

@@ -30,6 +30,7 @@ enum reg_rev {
 	WFDMA_EXT_CSR_ADDR,
 	CBTOP1_PHY_END,
 	INFRA_MCU_ADDR_END,
+	FW_EXCEPTION_ADDR,
 	SWDEF_BASE_ADDR,
 	__MT_REG_MAX,
 };
@@ -939,6 +940,8 @@ enum offs_rev {
 #define MT_ADIE_TYPE_MASK		BIT(1)
 
 /* FW MODE SYNC */
+#define MT_FW_EXCEPTION		__REG(FW_EXCEPTION_ADDR)
+
 #define MT_SWDEF_BASE			__REG(SWDEF_BASE_ADDR)
 
 #define MT_SWDEF(ofs)			(MT_SWDEF_BASE + (ofs))
@@ -1004,10 +1007,6 @@ enum offs_rev {
 #define MT_TOP_MISC			MT_TOP(0xf0)
 #define MT_TOP_MISC_FW_STATE		GENMASK(2, 0)
 
-#define MT_HW_BOUND			0x70010020
-#define MT_HW_REV			0x70010204
-#define MT_WF_SUBSYS_RST		0x70002600
-
 #define MT_TOP_WFSYS_WAKEUP		MT_TOP(0x1a4)
 #define MT_TOP_WFSYS_WAKEUP_MASK	BIT(0)
 
@@ -1069,6 +1068,10 @@ enum offs_rev {
 #define MT_MCU_BUS_DBG_TIMEOUT_CK_EN_MASK BIT(3)
 #define MT_MCU_BUS_DBG_TIMEOUT_EN_MASK	BIT(2)
 
+#define MT_HW_BOUND			0x70010020
+#define MT_HW_REV			0x70010204
+#define MT_WF_SUBSYS_RST		0x70002600
+
 /* PCIE MAC */
 #define MT_PCIE_MAC_BASE		0x74030000
 #define MT_PCIE_MAC(ofs)		(MT_PCIE_MAC_BASE + (ofs))
@@ -1077,6 +1080,9 @@ enum offs_rev {
 #define MT_PCIE1_MAC_INT_ENABLE		0x74020188
 #define MT_PCIE1_MAC_INT_ENABLE_MT7916	0x74090188
 
+#define MT_WM_MCU_PC			0x7c060204
+#define MT_WA_MCU_PC			0x7c06020c
+
 /* PP TOP */
 #define MT_WF_PP_TOP_BASE		0x820cc000
 #define MT_WF_PP_TOP(ofs)		(MT_WF_PP_TOP_BASE + (ofs))