[Intel-gfx] [PATCH] drm/i915/bdw: Add WaHdcDisableFetchWhenMasked

[Daniel Vetter]

On Thu, Dec 04, 2014 at 05:25:56PM +0200, Ville Syrjälä wrote:
> On Thu, Dec 04, 2014 at 03:07:52PM +0000, Michel Thierry wrote:
> > We already have it for chv, but was missing for bdw.
> > 
> > Signed-off-by: Michel Thierry <michel.thierry at intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_ringbuffer.c | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > index 788e1b6..91ddcd1 100644
> > --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> > +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> > @@ -756,9 +756,11 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring)
> >  	 * workaround for for a possible hang in the unlikely event a TLB
> >  	 * invalidation occurs during a PSD flush.
> >  	 */
> > +	/* WaHdcDisableFetchWhenMasked:bdw */
> >  	/* WaDisableFenceDestinationToSLM:bdw (GT3 pre-production) */
> >  	WA_SET_BIT_MASKED(HDC_CHICKEN0,
> >  			  HDC_FORCE_NON_COHERENT |
> > +			  HDC_DONOT_FETCH_MEM_WHEN_MASKED |
> >  			  (IS_BDW_GT3(dev) ? HDC_FENCE_DEST_SLM_DISABLE : 0));
> 
> Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Queued for -next, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch