[Why] GRBM_CNTL is a PF_only register on gfx_v11. RLCG interface will return "out of range" under SRIOV VF. [How] Skip access GRBM_CNTL under gfx_v11 SRIOV VF. Signed-off-by: Yifan Zha <Yifan.Zha@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c index e3842dc100d6..1330768df0b1 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c @@ -1626,7 +1626,8 @@ static void gfx_v11_0_constants_init(struct amdgpu_device *adev) u32 tmp; int i; - WREG32_FIELD15_PREREG(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); + if (!amdgpu_sriov_vf(adev)) + WREG32_FIELD15_PREREG(GC, 0, GRBM_CNTL, READ_TIMEOUT, 0xff); gfx_v11_0_setup_rb(adev); gfx_v11_0_get_cu_info(adev, &adev->gfx.cu_info); -- 2.25.1
