1 files changed, 48 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index 11b7b4cffaae..ff360c699171 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -26,6 +26,7 @@
 #include <linux/gfp.h>
 #include <linux/slab.h>
 #include <linux/firmware.h>
+#include <linux/reboot.h>
 #include "amd_shared.h"
 #include "amd_powerplay.h"
 #include "power_state.h"
@@ -91,6 +92,45 @@ static int pp_early_init(void *handle)
 	return 0;
 }
 
+static void pp_swctf_delayed_work_handler(struct work_struct *work)
+{
+	struct pp_hwmgr *hwmgr =
+		container_of(work, struct pp_hwmgr, swctf_delayed_work.work);
+	struct amdgpu_device *adev = hwmgr->adev;
+	struct amdgpu_dpm_thermal *range =
+				&adev->pm.dpm.thermal;
+	uint32_t gpu_temperature, size;
+	int ret;
+
+	/*
+	 * If the hotspot/edge temperature is confirmed as below SW CTF setting point
+	 * after the delay enforced, nothing will be done.
+	 * Otherwise, a graceful shutdown will be performed to prevent further damage.
+	 */
+	if (range->sw_ctf_threshold &&
+	    hwmgr->hwmgr_func->read_sensor) {
+		ret = hwmgr->hwmgr_func->read_sensor(hwmgr,
+						     AMDGPU_PP_SENSOR_HOTSPOT_TEMP,
+						     &gpu_temperature,
+						     &size);
+		/*
+		 * For some legacy ASICs, hotspot temperature retrieving might be not
+		 * supported. Check the edge temperature instead then.
+		 */
+		if (ret == -EOPNOTSUPP)
+			ret = hwmgr->hwmgr_func->read_sensor(hwmgr,
+							     AMDGPU_PP_SENSOR_EDGE_TEMP,
+							     &gpu_temperature,
+							     &size);
+		if (!ret && gpu_temperature / 1000 < range->sw_ctf_threshold)
+			return;
+	}
+
+	dev_emerg(adev->dev, "ERROR: GPU over temperature range(SW CTF) detected!\n");
+	dev_emerg(adev->dev, "ERROR: System is going to shutdown due to GPU SW CTF!\n");
+	orderly_poweroff(true);
+}
+
 static int pp_sw_init(void *handle)
 {
 	struct amdgpu_device *adev = handle;
@@ -101,6 +141,10 @@ static int pp_sw_init(void *handle)
 
 	pr_debug("powerplay sw init %s\n", ret ? "failed" : "successfully");
 
+	if (!ret)
+		INIT_DELAYED_WORK(&hwmgr->swctf_delayed_work,
+				  pp_swctf_delayed_work_handler);
+
 	return ret;
 }
 
@@ -135,6 +179,8 @@ static int pp_hw_fini(void *handle)
 	struct amdgpu_device *adev = handle;
 	struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
 
+	cancel_delayed_work_sync(&hwmgr->swctf_delayed_work);
+
 	hwmgr_hw_fini(hwmgr);
 
 	return 0;
@@ -221,6 +267,8 @@ static int pp_suspend(void *handle)
 	struct amdgpu_device *adev = handle;
 	struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
 
+	cancel_delayed_work_sync(&hwmgr->swctf_delayed_work);
+
 	return hwmgr_suspend(hwmgr);
 }