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From:   Ryder Lee <ryder.lee@mediatek.com>
To:     Felix Fietkau <nbd@nbd.name>
CC:     Lorenzo Bianconi <lorenzo.bianconi@redhat.com>,
        Shayne Chen <shayne.chen@mediatek.com>,
        Evelyn Tsai <evelyn.tsai@mediatek.com>,
        <linux-wireless@vger.kernel.org>,
        <linux-mediatek@lists.infradead.org>,
        "Ryder Lee" <ryder.lee@mediatek.com>
Subject: [PATCH v2 2/2] mt76: mt7915: add more statistics from fw_util debugfs knobs
Date:   Sun, 8 May 2022 13:24:54 +0800
Message-ID: <b3957480ad74444b7170f3f9f124bd043e1a0ce8.1651983999.git.ryder.lee@mediatek.com>
In-Reply-To: <210119c0737d72aa049c113dac48e22a4d84d689.1651983999.git.ryder.lee@mediatek.com>
References: <210119c0737d72aa049c113dac48e22a4d84d689.1651983999.git.ryder.lee@mediatek.com>
MIME-Version: 1.0
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Print out exception state and program counters of WA/WM MCUs.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
 .../net/wireless/mediatek/mt76/mt7915/debugfs.c    |  8 ++++++++
 drivers/net/wireless/mediatek/mt76/mt7915/mmio.c   |  3 +++
 drivers/net/wireless/mediatek/mt76/mt7915/regs.h   | 14 ++++++++++----
 3 files changed, 21 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index 656f3ffccf4b..6edbbce92926 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/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) ?
+		   mt76_get_field(dev, MT_FW_EXCEPTION, GENMASK(15, 8)) :
+		   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);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index 3c55d4cebbf2..d95c32c7bd53 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/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,
 };
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h b/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
index 7415118f6399..eb8891c53e9c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/regs.h
+++ b/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,
 };
@@ -922,6 +923,8 @@ 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))
@@ -987,10 +990,6 @@ 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)
 
@@ -1052,6 +1051,10 @@ 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))
@@ -1060,6 +1063,9 @@ 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))
-- 
2.29.2