From: Kenneth Feng <kenneth.feng@amd.com>
Date: Thu, 27 Feb 2025 02:13:53 +0000 (+0800)
Subject: drm/amd/pm: add fan abnormal detection
X-Git-Tag: v6.15-rc1~120^2~12^2~97
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=0107c595c5d0521c6397836be0767532121ef16c;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/pm: add fan abnormal detection

add fan abnormal detection on smu v14.0.2&smu v14.0.3

Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0.c
index adbb6332376ec..14a5760082b83 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0.c
@@ -950,6 +950,14 @@ static int smu_v14_0_irq_process(struct amdgpu_device *adev,
 	uint32_t client_id = entry->client_id;
 	uint32_t src_id = entry->src_id;
 
+	/*
+	 * ctxid is used to distinguish different
+	 * events for SMCToHost interrupt.
+	 */
+	uint32_t ctxid = entry->src_data[0];
+	uint32_t data;
+	uint32_t high;
+
 	if (client_id == SOC15_IH_CLIENTID_THM) {
 		switch (src_id) {
 		case THM_11_0__SRCID__THM_DIG_THERM_L2H:
@@ -964,6 +972,50 @@ static int smu_v14_0_irq_process(struct amdgpu_device *adev,
 				  src_id);
 			break;
 		}
+	} else if (client_id == SOC15_IH_CLIENTID_MP1) {
+		if (src_id == SMU_IH_INTERRUPT_ID_TO_DRIVER) {
+			/* ACK SMUToHost interrupt */
+			data = RREG32_SOC15(MP1, 0, regMP1_SMN_IH_SW_INT_CTRL);
+			data = REG_SET_FIELD(data, MP1_SMN_IH_SW_INT_CTRL, INT_ACK, 1);
+			WREG32_SOC15(MP1, 0, regMP1_SMN_IH_SW_INT_CTRL, data);
+
+			switch (ctxid) {
+			case SMU_IH_INTERRUPT_CONTEXT_ID_FAN_ABNORMAL:
+				high = smu->thermal_range.software_shutdown_temp +
+					smu->thermal_range.software_shutdown_temp_offset;
+				high = min_t(typeof(high),
+					     SMU_THERMAL_MAXIMUM_ALERT_TEMP,
+					     high);
+				dev_emerg(adev->dev, "Reduce soft CTF limit to %d (by an offset %d)\n",
+							high,
+							smu->thermal_range.software_shutdown_temp_offset);
+
+				data = RREG32_SOC15(THM, 0, regTHM_THERMAL_INT_CTRL);
+				data = REG_SET_FIELD(data, THM_THERMAL_INT_CTRL,
+							DIG_THERM_INTH,
+							(high & 0xff));
+				data = data & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
+				WREG32_SOC15(THM, 0, regTHM_THERMAL_INT_CTRL, data);
+				break;
+			case SMU_IH_INTERRUPT_CONTEXT_ID_FAN_RECOVERY:
+				high = min_t(typeof(high),
+					     SMU_THERMAL_MAXIMUM_ALERT_TEMP,
+					     smu->thermal_range.software_shutdown_temp);
+				dev_emerg(adev->dev, "Recover soft CTF limit to %d\n", high);
+
+				data = RREG32_SOC15(THM, 0, regTHM_THERMAL_INT_CTRL);
+				data = REG_SET_FIELD(data, THM_THERMAL_INT_CTRL,
+							DIG_THERM_INTH,
+							(high & 0xff));
+				data = data & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
+				WREG32_SOC15(THM, 0, regTHM_THERMAL_INT_CTRL, data);
+				break;
+			default:
+				dev_dbg(adev->dev, "Unhandled context id %d from client:%d!\n",
+									ctxid, client_id);
+				break;
+			}
+		}
 	}
 
 	return 0;