[PATCH v4 14/16] drm/amdgpu: Skip the program of GRBM_CAM* in SRIOV

[Alex Deucher]

On Fri, May 14, 2021 at 3:27 AM Peng Ju Zhou <PengJu.Zhou at amd.com> wrote:
>
> KMD should not the program these registers,
> so skip them in the SRIOV environment.
>
> Signed-off-by: Peng Ju Zhou <PengJu.Zhou at amd.com>

Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> index 67db0197c882..952a2f0f2f4e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
> @@ -7114,6 +7114,9 @@ static void gfx_v10_0_setup_grbm_cam_remapping(struct amdgpu_device *adev)
>  {
>         uint32_t data;
>
> +       if (amdgpu_sriov_vf(adev))
> +               return;
> +
>         /* initialize cam_index to 0
>          * index will auto-inc after each data writting */
>         WREG32_SOC15(GC, 0, mmGRBM_CAM_INDEX, 0);
> --
> 2.17.1
>
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