[Intel-gfx] [PATCH] drm/i915/gsc: Only initialize GSC in tile 0

[Winkler, Tomas]

> 
> On Mon, Oct 31, 2022 at 07:51:17AM +0200, Alexander Usyskin wrote:
> > From: José Roberto de Souza <jose.souza at intel.com>
> >
> > For multi-tile setups the GSC operational only on the tile 0.
> > Skip GSC auxiliary device creation for all other tiles.
> >
> > Cc: Tomas Winkler <tomas.winkler at intel.com>
> > Cc: Vitaly Lubart <vitaly.lubart at intel.com>
> > Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> > Signed-off-by: Alexander Usyskin <alexander.usyskin at intel.com>
> > ---
> >  drivers/gpu/drm/i915/gt/intel_gt.c | 8 ++++++--
> >  1 file changed, 6 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c
> > b/drivers/gpu/drm/i915/gt/intel_gt.c
> > index 2e796ffad911..92ad8cd45ddb 100644
> > --- a/drivers/gpu/drm/i915/gt/intel_gt.c
> > +++ b/drivers/gpu/drm/i915/gt/intel_gt.c
> > @@ -456,7 +456,10 @@ void intel_gt_chipset_flush(struct intel_gt *gt)
> >
> >  void intel_gt_driver_register(struct intel_gt *gt)  {
> > -	intel_gsc_init(&gt->gsc, gt->i915);
> > +	if (gt->info.id == 0)
> > +		intel_gsc_init(&gt->gsc, gt->i915);
> > +	else
> > +		drm_dbg(&gt->i915->drm, "Not initializing gsc for remote
> tiles\n");
> 
> It looks to me that we need to move the gsc out of the intel_gt instead of
> workaround the initialization.

The interrupts are handled by gt, so where this should go ?