On Thu, Feb 05, 2015 at 10:47:24AM +0000, Nick Hoath wrote: > From: "Hoath, Nicholas" <[email protected]> > > Add: > WaForceEnableNonCoherent > > v1: Don't add WaHdcDisableFetchWhenMasked. Add stepping check for > WaForceEnableNonCoherent > > Signed-off-by: Nick Hoath <[email protected]>
Reviewed-by: Damien Lespiau <[email protected]> -- Damien > --- > drivers/gpu/drm/i915/intel_ringbuffer.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c > b/drivers/gpu/drm/i915/intel_ringbuffer.c > index 066b63d..36885b4 100644 > --- a/drivers/gpu/drm/i915/intel_ringbuffer.c > +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c > @@ -902,6 +902,17 @@ static int gen9_init_workarounds(struct intel_engine_cs > *ring) > GEN9_ENABLE_YV12_BUGFIX); > } > > + if (INTEL_REVID(dev) <= SKL_D0_REVID) { > + /* > + *Use Force Non-Coherent whenever executing a 3D context. This > + * is a workaround for a possible hang in the unlikely event > + * a TLB invalidation occurs during a PSD flush. > + */ > + /* WaForceEnableNonCoherent:skl */ > + WA_SET_BIT_MASKED(HDC_CHICKEN0, > + HDC_FORCE_NON_COHERENT); > + } > + > /* Wa4x4STCOptimizationDisable:skl */ > WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE); > > -- > 2.1.1 > _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
