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

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On Fri, Sep 15, 2023 at 2:13 AM Christian König
<ckoenig.leichtzumerken@xxxxxxxxx> wrote:
>
> Am 14.09.23 um 20:49 schrieb Alex Deucher:
> > On Thu, Sep 14, 2023 at 2:31 PM Alex Deucher <alexander.deucher@xxxxxxx> wrote:
> >> AGP aperture is deprecated and no longer functional.
> >>
> >> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> >> ---
> >>   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.
>
> I also don't see patch #1 in the series.
>

https://patchwork.freedesktop.org/patch/557552/?series=123727&rev=1

> Patch #3 shouldn't be necessary, if the AGP aperture isn't wanted the
> code should just not call amdgpu_gmc_agp_location().

Yeah, I could go that way too if you prefer.  Same difference at the
end of the day.

Alex

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




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