On Wed, 2020-07-08 at 16:12 +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Supposedly only skl/bxt need WaFbcHighMemBwCorruptionAvoidance.
> Do not apply to the other gen9 platforms.
Matches spec if not considering pre-production HW.
Reviewed-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8760e1ba1eee..7b98d0eb8597 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -98,10 +98,6 @@ static void gen9_init_clock_gating(struct drm_i915_private *dev_priv)
> I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
> DISP_FBC_MEMORY_WAKE);
>
> - /* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl,cfl */
> - I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
> - ILK_DPFC_DISABLE_DUMMY0);
> -
> if (IS_SKYLAKE(dev_priv)) {
> /* WaDisableDopClockGating */
> I915_WRITE(GEN7_MISCCPCTL, I915_READ(GEN7_MISCCPCTL)
> @@ -142,6 +138,10 @@ static void bxt_init_clock_gating(struct drm_i915_private *dev_priv)
> /* WaFbcTurnOffFbcWatermark:bxt */
> I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
> DISP_FBC_WM_DIS);
> +
> + /* WaFbcHighMemBwCorruptionAvoidance:bxt */
> + I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
> + ILK_DPFC_DISABLE_DUMMY0);
> }
>
> static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
> @@ -7238,6 +7238,10 @@ static void skl_init_clock_gating(struct drm_i915_private *dev_priv)
> /* WaFbcNukeOnHostModify:skl */
> I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
> ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
> +
> + /* WaFbcHighMemBwCorruptionAvoidance:skl */
> + I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
> + ILK_DPFC_DISABLE_DUMMY0);
> }
>
> static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
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