On Wed, Feb 12, 2020 at 11:17:28AM -0800, Rafael Antognolli wrote: > It's not clear whether this workaround is final yet, but the BSpec > indicates that userspace needs to set bit 9 of this register on demand: > > "To avoid sporadic corruptions “Set 0x7010[9] when Depth Buffer > Surface Format is D16_UNORM , surface type is not NULL & 1X_MSAA" > > BugLink: https://gitlab.freedesktop.org/mesa/mesa/issues/2501 > Signed-off-by: Rafael Antognolli <rafael.antognolli@xxxxxxxxx> Seems like the right register to whitelist to allow userspace to apply the workaround. Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx> I think we can drop the "Allow userpace to implement this workaround" part of the comment; that part is self-explanatory given that it's a whitelist entry. Do you mind if we just tweak the comment while applying? It looks like the CI shards queue is massive right now so it's already going to take a long time to get the full results back for this patch; no need to make it even longer by resubmitting for a trivial comment shortening. Matt > --- > drivers/gpu/drm/i915/gt/intel_workarounds.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c > index 62b43f538a56..57b9685d9347 100644 > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c > @@ -1264,6 +1264,12 @@ static void tgl_whitelist_build(struct intel_engine_cs *engine) > whitelist_reg_ext(w, PS_INVOCATION_COUNT, > RING_FORCE_TO_NONPRIV_ACCESS_RD | > RING_FORCE_TO_NONPRIV_RANGE_4); > + > + /* Wa_1808121037:tgl > + * > + * Allow userpace to implement this workaround. > + */ > + whitelist_reg(w, GEN7_COMMON_SLICE_CHICKEN1); > break; > default: > break; > -- > 2.25.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Matt Roper Graphics Software Engineer VTT-OSGC Platform Enablement Intel Corporation (916) 356-2795 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
