On Tue, Feb 23, 2021 at 1:00 PM Liu, Shaoyun <Shaoyun.Liu@xxxxxxx> wrote:
>
> [AMD Official Use Only - Internal Distribution Only]
>
> Thanks , Alex.
> Whole four patches are needed for the XGMI reset to work normally . I try to describe what these patches for in the first patch. But If you don't mind this , I can adjust the order as suggested .
Just update the commit messages to indicate that these changes are
needed for big rework in the later patches.
Alex
>
> Thanks
> Shaoyun.liu
>
> -----Original Message-----
> From: Alex Deucher <alexdeucher@xxxxxxxxx>
> Sent: Tuesday, February 23, 2021 11:26 AM
> To: Liu, Shaoyun <Shaoyun.Liu@xxxxxxx>
> Cc: amd-gfx list <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
> Subject: Re: [PATCH 2/4] drm/amdgpu: get xgmi info at eary_init
>
> On Thu, Feb 18, 2021 at 8:19 PM shaoyunl <shaoyun.liu@xxxxxxx> wrote:
> >
> > Driver need to get XGMI info function earlier before ip_init since
> > driver need to check the XGMI setting to determine how to perform
> > reset during init
> >
> > Signed-off-by: shaoyunl <shaoyun.liu@xxxxxxx>
> > Change-Id: Ic37276bbb6640bb4e9360220fed99494cedd3ef5
>
> I think this patch needs to come first or patch 1 won't work. With that changed, this patch is:
> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
>
> > ---
> > drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 10 ++++------
> > 1 file changed, 4 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> > b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> > index 3686e777c76c..3e6bfab5b855 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> > @@ -1151,6 +1151,10 @@ static int gmc_v9_0_early_init(void *handle)
> > adev->gmc.private_aperture_end =
> > adev->gmc.private_aperture_start + (4ULL << 30) - 1;
> >
> > + /* Need to get xgmi info earlier to decide the reset behavior*/
> > + if (adev->gmc.xgmi.supported)
> > + adev->gfxhub.funcs->get_xgmi_info(adev);
> > +
> > return 0;
> > }
> >
> > @@ -1416,12 +1420,6 @@ static int gmc_v9_0_sw_init(void *handle)
> > }
> > adev->need_swiotlb = drm_need_swiotlb(44);
> >
> > - if (adev->gmc.xgmi.supported) {
> > - r = adev->gfxhub.funcs->get_xgmi_info(adev);
> > - if (r)
> > - return r;
> > - }
> > -
> > r = gmc_v9_0_mc_init(adev);
> > if (r)
> > return r;
> > --
> > 2.17.1
> >
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