[Intel-gfx] [PATCH 3/3] drm/i915/bxt: Add WaForceContextSaveRestoreNonCoherent

[Imre Deak]

On pe, 2015-04-10 at 13:12 +0100, Nick Hoath wrote:
> Signed-off-by: Nick Hoath <nicholas.hoath at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
> index eebee73..cc62e5c 100644
> --- a/drivers/gpu/drm/i915/intel_ringbuffer.c
> +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
> @@ -1054,6 +1054,10 @@ static int bxt_init_workarounds(struct intel_engine_cs *ring)
>  			GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
>  	}
>  
> +	/* WaForceContextSaveRestoreNonCoherent:bxt */
> +	WA_SET_BIT_MASKED(HDC_CHICKEN0,
> +			  HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT);
> +

Looks ok, but again it needs to be added for SKL (all steppings) in
gen9_init_workarounds.

>  	return 0;
>  }
>