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drm/amdgpu/gfx9: disable gfxoff when reading rlc clock 

Otherwise we readback all ones.  Fixes rlc counter
readback while gfxoff is active.

Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2020-02-12 08:51:29 -05:00
parent c657b936ea
commit 120cf95930
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
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@ -3959,6 +3959,7 @@ static uint64_t gfx_v9_0_get_gpu_clock_counter(struct amdgpu_device *adev)
{
uint64_t clock;
amdgpu_gfx_off_ctrl(adev, false);
mutex_lock(&adev->gfx.gpu_clock_mutex);
if (adev->asic_type == CHIP_VEGA10 && amdgpu_sriov_runtime(adev)) {
uint32_t tmp, lsb, msb, i = 0;
@ -3977,6 +3978,7 @@ static uint64_t gfx_v9_0_get_gpu_clock_counter(struct amdgpu_device *adev)
((uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_MSB) << 32ULL);
}
mutex_unlock(&adev->gfx.gpu_clock_mutex);
amdgpu_gfx_off_ctrl(adev, true);
return clock;
}