drm/amdgpu/gfx10: disable gfxoff when reading rlc clock (b08c3ed6) · Commits · 戴 / test

Otherwise we readback all ones. Fixes rlc counter readback while gfxoff is active. Reviewed-by:

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -3923,11 +3923,13 @@ static uint64_t gfx_v10_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);
		WREG32_SOC15(GC, 0, mmRLC_CAPTURE_GPU_CLOCK_COUNT, 1);
		clock = (uint64_t)RREG32_SOC15(GC, 0, mmRLC_GPU_CLOCK_COUNT_LSB) \|
		((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;
		}