[Intel-gfx] [PATCH] drm/i915/gen9: Implement WaDisableKillLogic for gen 9

[Mika Kuoppala]

Nick Hoath <nicholas.hoath at intel.com> writes:

> v2: Patch leakage fixed
>
> Signed-off-by: Nick Hoath <nicholas.hoath at intel.com>

Reviewed-by: Mika Kuoppala <mika.kuoppala at intel.com>

> ---
>  drivers/gpu/drm/i915/i915_reg.h | 1 +
>  drivers/gpu/drm/i915/intel_pm.c | 4 ++++
>  3 files changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 059de0f..afa8972 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -160,6 +160,7 @@
>  #define GAM_ECOCHK			0x4090
>  #define   BDW_DISABLE_HDC_INVALIDATION	(1<<25)
>  #define   ECOCHK_SNB_BIT		(1<<10)
> +#define   ECOCHK_DIS_TLB		(1<<8)
>  #define   HSW_ECOCHK_ARB_PRIO_SOL	(1<<6)
>  #define   ECOCHK_PPGTT_CACHE64B		(0x3<<3)
>  #define   ECOCHK_PPGTT_CACHE4B		(0x0<<3)
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index f2be1ce..6986342 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -59,6 +59,10 @@ static void gen9_init_clock_gating(struct drm_device *dev)
>  	/* WaEnableLbsSlaRetryTimerDecrement:skl */
>  	I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) |
>  		   GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE);
> +
> +	/* WaDisableKillLogic:bxt,skl */
> +	I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
> +		   ECOCHK_DIS_TLB);
>  }
>  
>  static void skl_init_clock_gating(struct drm_device *dev)
> -- 
> 2.1.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx