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drm/i915/gen9: Add WaFbcHighMemBwCorruptionAvoidance
Add this fbc related workaround for all gen9 Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-28-git-send-email-mika.kuoppala@intel.com
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2 changed files with 5 additions and 0 deletions
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@ -2209,6 +2209,7 @@ enum skl_disp_power_wells {
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#define ILK_DPFC_STATUS _MMIO(0x43210)
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#define ILK_DPFC_FENCE_YOFF _MMIO(0x43218)
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#define ILK_DPFC_CHICKEN _MMIO(0x43224)
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#define ILK_DPFC_DISABLE_DUMMY0 (1<<8)
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#define ILK_DPFC_NUKE_ON_ANY_MODIFICATION (1<<23)
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#define ILK_FBC_RT_BASE _MMIO(0x2128)
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#define ILK_FBC_RT_VALID (1<<0)
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@ -75,6 +75,10 @@ static void gen9_init_clock_gating(struct drm_device *dev)
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I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) |
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DISP_FBC_WM_DIS |
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DISP_FBC_MEMORY_WAKE);
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/* WaFbcHighMemBwCorruptionAvoidance:skl,bxt,kbl */
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I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
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ILK_DPFC_DISABLE_DUMMY0);
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}
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static void bxt_init_clock_gating(struct drm_device *dev)
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