[PATCH] drm/amdgpu: Re-enable FRU check for most models

[Russell, Kent]

[AMD Official Use Only - Internal Distribution Only]


> -----Original Message-----
> From: Alex Deucher <alexdeucher at gmail.com>
> Sent: Friday, April 3, 2020 12:36 PM
> To: Russell, Kent <Kent.Russell at amd.com>
> Cc: amd-gfx list <amd-gfx at lists.freedesktop.org>
> Subject: Re: [PATCH] drm/amdgpu: Re-enable FRU check for most models
> 
> On Fri, Apr 3, 2020 at 12:30 PM Kent Russell <kent.russell at amd.com> wrote:
> >
> > There are 2 VG20 SKUs that do not have the FRU on there, and trying to
> > read that will cause a hang. For now, check for the gaming SKU until a
> > proper fix can be implemented. This re-enables serial number reporting
> > for server cards
> >
> > Signed-off-by: Kent Russell <kent.russell at amd.com>
> > ---
> >  drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c | 16
> ++++++++++++++--
> >  1 file changed, 14 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
> > b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
> > index bfe4259f9508..9582469a70cb 100644
> > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
> > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fru_eeprom.c
> > @@ -31,9 +31,21 @@
> >
> >  bool is_fru_eeprom_supported(struct amdgpu_device *adev)  {
> > -       /* TODO: Resolve supported ASIC type */
> > +       struct atom_context *atom_ctx = adev->mode_info.atom_context;
> >
> > -       return false;
> > +       if (!atom_ctx)
> > +               return false;
> > +
> > +       /* TODO: Gaming SKUs don't have the FRU EEPROM.
> > +        * Use this to address hangs on modprobe on gaming SKUs
> > +        * until a proper solution can be implemented
> > +        */
> > +       if (adev->asic_type == CHIP_VEGA20)
> > +               if (strnstr(atom_ctx->vbios_version, "D360",
> > +                               sizeof(atom_ctx->vbios_version)))
> > +                       return false;
> > +
> > +       return true;
> 
> I think you want to default to false and only return true if it's a
> vega20 and it's the right vbios version otherwise we'll try to fetch
> the info on all asics.

I was trying to go for the smallest list. There are 2 SKUs in all of VG20 that don't work, and none in Arcturus (and the FRU check is only for VG20+) , so I assumed that I could just cover the 2 bad cases. It's supported on Arcturus, and it's supported on server VG20, and we don't touch it at all on VG10-and-older.
 
 Kent


> 
> Alex
> 
> >  }
> >
> >  int amdgpu_fru_read_eeprom(struct amdgpu_device *adev, uint32_t
> addrptr,
> > --
> > 2.17.1
> >
> > _______________________________________________
> > amd-gfx mailing list
> > amd-gfx at lists.freedesktop.org
> >
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.fr
> eedesktop.org%2Fmailman%2Flistinfo%2Famd-
> gfx&data=02%7C01%7Ckent.russell%40amd.com%7C0f2e5090b21b4807b
> 66808d7d7ed28f1%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C6
> 37215285907421019&sdata=yBc0%2FrNnnWgRBiJcAvav4JtvmoG0Tyhd6p
> X6gfFeW%2FU%3D&reserved=0