drm/amdgpu: implement read_sensor() for pre-powerplay chips
Add the GPU temperature, the shader clock and eventually the
memory clock (as well as the GPU load on CI). The main goal is
to expose this info to the userspace like Radeon.
v2: - add AMDGPU_PP_SENSOR_GPU_LOAD on CI
- update the commit description
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/si_dpm.c b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
index c5dec21..eb84c2a 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_dpm.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_dpm.c
@@ -7982,6 +7982,46 @@ static int si_check_state_equal(struct amdgpu_device *adev,
return 0;
}
+static int si_dpm_read_sensor(struct amdgpu_device *adev, int idx,
+ void *value, int *size)
+{
+ struct evergreen_power_info *eg_pi = evergreen_get_pi(adev);
+ struct amdgpu_ps *rps = &eg_pi->current_rps;
+ struct si_ps *ps = si_get_ps(rps);
+ uint32_t sclk, mclk;
+ u32 pl_index =
+ (RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_STATE_INDEX_MASK) >>
+ CURRENT_STATE_INDEX_SHIFT;
+
+ /* size must be at least 4 bytes for all sensors */
+ if (*size < 4)
+ return -EINVAL;
+
+ switch (idx) {
+ case AMDGPU_PP_SENSOR_GFX_SCLK:
+ if (pl_index < ps->performance_level_count) {
+ sclk = ps->performance_levels[pl_index].sclk;
+ *((uint32_t *)value) = sclk;
+ *size = 4;
+ return 0;
+ }
+ return -EINVAL;
+ case AMDGPU_PP_SENSOR_GFX_MCLK:
+ if (pl_index < ps->performance_level_count) {
+ mclk = ps->performance_levels[pl_index].mclk;
+ *((uint32_t *)value) = mclk;
+ *size = 4;
+ return 0;
+ }
+ return -EINVAL;
+ case AMDGPU_PP_SENSOR_GPU_TEMP:
+ *((uint32_t *)value) = si_dpm_get_temp(adev);
+ *size = 4;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
const struct amd_ip_funcs si_dpm_ip_funcs = {
.name = "si_dpm",
@@ -8018,6 +8058,7 @@ static const struct amdgpu_dpm_funcs si_dpm_funcs = {
.get_fan_speed_percent = &si_dpm_get_fan_speed_percent,
.check_state_equal = &si_check_state_equal,
.get_vce_clock_state = amdgpu_get_vce_clock_state,
+ .read_sensor = &si_dpm_read_sensor,
};
static void si_dpm_set_dpm_funcs(struct amdgpu_device *adev)