Re: [PATCH 5/6] drm/i915/vlv: Removed 3 rendering specific Hw WA from clock gating fn

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Wed, Jan 22, 2014 at 09:15:09AM +0530, akash.goel@intel.com wrote:
> From: Akash Goel <akash.goel@intel.com>
> 
> Removed 3 workarounds as not needed for VLV+(B0 onwards)
> 1. WaDisableRHWOOptimizationForRenderHang
> 2. WaDisableL3CacheAging
> 3. WaDisableDopClockGating

Again multiple patches. And I think my earlier series already touched on
some of these.

> 
> Signed-off-by: Akash Goel <akash.goel@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 10 ----------
>  1 file changed, 10 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 4c36ff8..e4d220c 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4947,12 +4947,6 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
>  		   _MASKED_BIT_ENABLE(GEN7_MAX_PS_THREAD_DEP |
>  				      GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE));
>  
> -	/* Apply the WaDisableRHWOOptimizationForRenderHang:vlv workaround. */
> -	I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
> -		   GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
> -
> -	/* WaApplyL3ControlAndL3ChickenMode:vlv */
> -	I915_WRITE(GEN7_L3CNTLREG1, I915_READ(GEN7_L3CNTLREG1) | GEN7_L3AGDIS);
>  	I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER, GEN7_WA_L3_CHICKEN_MODE);
>  
>  	/* WaDisable_RenderCache_OperationalFlush
> @@ -4965,10 +4959,6 @@ static void valleyview_init_clock_gating(struct drm_device *dev)
>  	I915_WRITE(GEN7_L3SQCREG4, I915_READ(GEN7_L3SQCREG4) &
>  		   ~L3SQ_URB_READ_CAM_MATCH_DISABLE);
>  
> -	/* WaDisableDopClockGating:vlv */
> -	I915_WRITE(GEN7_ROW_CHICKEN2,
> -		   _MASKED_BIT_ENABLE(DOP_CLOCK_GATING_DISABLE));
> -
>  	/* This is required by WaCatErrorRejectionIssue:vlv */
>  	I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
>  		   I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
> -- 
> 1.8.5.2
> 
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-- 
Ville Syrjälä
Intel OTC