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

[Ville Syrjälä]

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>

We also seem to miss the w/a name for the "force non-coherent" thing.
Can you add that as well?

>  
>  	/* Wa4x4STCOptimizationDisable:bdw */
> -- 
> 2.1.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Ville Syrjälä
Intel OTC