[Intel-gfx] [PATCH 36/89] drm/i915/skl: Implement WaDisableDgMirrorFixInHalfSliceChicken5:skl

[Rodrigo Vivi]

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

On Thu, Sep 4, 2014 at 4:27 AM, Damien Lespiau <damien.lespiau at intel.com>
wrote:

> Signed-off-by: Damien Lespiau <damien.lespiau at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_reg.h | 3 +++
>  drivers/gpu/drm/i915/intel_pm.c | 8 ++++++++
>  2 files changed, 11 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h
> b/drivers/gpu/drm/i915/i915_reg.h
> index 5928a75..c293dab 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -5862,6 +5862,9 @@ enum punit_power_well {
>  #define   GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE  (1<<10)
>  #define   GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3)
>
> +#define GEN9_HALF_SLICE_CHICKEN5       0xe188
> +#define   GEN9_DG_MIRROR_FIX_ENABLE    (1<<5)
> +
>  #define GEN8_ROW_CHICKEN               0xe4f0
>  #define   PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE        (1<<8)
>  #define   STALL_DOP_GATING_DISABLE             (1<<5)
> diff --git a/drivers/gpu/drm/i915/intel_pm.c
> b/drivers/gpu/drm/i915/intel_pm.c
> index c38baea..faff54e 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -77,6 +77,14 @@ static void gen9_init_clock_gating(struct drm_device
> *dev)
>         I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) |
>                    GEN8_SDEUNIT_CLOCK_GATE_DISABLE);
>
> +       /*
> +        * WaDisableDgMirrorFixInHalfSliceChicken5:skl
> +        * This is a pre-production w/a.
> +        */
> +       I915_WRITE(GEN9_HALF_SLICE_CHICKEN5,
> +                  I915_READ(GEN9_HALF_SLICE_CHICKEN5) &
> +                  ~GEN9_DG_MIRROR_FIX_ENABLE);
> +
>         /* Wa4x4STCOptimizationDisable:skl */
>         I915_WRITE(CACHE_MODE_1,
>                    _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));
> --
> 1.8.3.1
>
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> Intel-gfx at lists.freedesktop.org
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>



-- 
Rodrigo Vivi
Blog: http://blog.vivi.eng.br
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