[PATCH 4/4] drm/amdgpu/gmc11: disable AGP on GC 11.5

[Alex Deucher]

On Thu, Sep 14, 2023 at 2:31 PM Alex Deucher <alexander.deucher at amd.com> wrote:
>
> AGP aperture is deprecated and no longer functional.
>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
> index 6947b598e9b2..7ee91b66f761 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
> @@ -745,6 +745,9 @@ static int gmc_v11_0_mc_init(struct amdgpu_device *adev)
>                 adev->gmc.gart_placement = AMDGPU_GART_PLACEMENT_LOW;
>         else
>                 adev->gmc.gart_placement = AMDGPU_GART_PLACEMENT_HIGH;
> +       /* AGP aperture is removed on GC11.5 */
> +       if (amdgpu_ip_version(adev, GC_HWIP, -2) >= IP_VERSION(11, 5, 0))

Not sure what happened here.  I've replaced the -2 with 0 locally.

Alex

> +               adev->gmc.no_agp = true;
>
>         gmc_v11_0_vram_gtt_location(adev, &adev->gmc);
>
> --
> 2.41.0
>