Commit 031cd8c8 authored by Mika Kuoppala's avatar Mika Kuoppala Committed by Mika Kuoppala

drm/i195/fbc: Add WaFbcNukeOnHostModify

Bspec states that we need to set nuke on modify all to prevent
screen corruption with fbc on skl and kbl.

v2: proper workaround name

References: HSD#2227109, HSDES#1404569388
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: default avatarMika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-27-git-send-email-mika.kuoppala@intel.com
parent 303d4ea5
...@@ -2209,6 +2209,7 @@ enum skl_disp_power_wells { ...@@ -2209,6 +2209,7 @@ enum skl_disp_power_wells {
#define ILK_DPFC_STATUS _MMIO(0x43210) #define ILK_DPFC_STATUS _MMIO(0x43210)
#define ILK_DPFC_FENCE_YOFF _MMIO(0x43218) #define ILK_DPFC_FENCE_YOFF _MMIO(0x43218)
#define ILK_DPFC_CHICKEN _MMIO(0x43224) #define ILK_DPFC_CHICKEN _MMIO(0x43224)
#define ILK_DPFC_NUKE_ON_ANY_MODIFICATION (1<<23)
#define ILK_FBC_RT_BASE _MMIO(0x2128) #define ILK_FBC_RT_BASE _MMIO(0x2128)
#define ILK_FBC_RT_VALID (1<<0) #define ILK_FBC_RT_VALID (1<<0)
#define SNB_FBC_FRONT_BUFFER (1<<1) #define SNB_FBC_FRONT_BUFFER (1<<1)
......
...@@ -6998,6 +6998,10 @@ static void kabylake_init_clock_gating(struct drm_device *dev) ...@@ -6998,6 +6998,10 @@ static void kabylake_init_clock_gating(struct drm_device *dev)
if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) | I915_WRITE(GEN6_UCGCTL1, I915_READ(GEN6_UCGCTL1) |
GEN6_GAMUNIT_CLOCK_GATE_DISABLE); GEN6_GAMUNIT_CLOCK_GATE_DISABLE);
/* WaFbcNukeOnHostModify:kbl */
I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
} }
static void skylake_init_clock_gating(struct drm_device *dev) static void skylake_init_clock_gating(struct drm_device *dev)
...@@ -7009,6 +7013,10 @@ static void skylake_init_clock_gating(struct drm_device *dev) ...@@ -7009,6 +7013,10 @@ static void skylake_init_clock_gating(struct drm_device *dev)
/* WAC6entrylatency:skl */ /* WAC6entrylatency:skl */
I915_WRITE(FBC_LLC_READ_CTRL, I915_READ(FBC_LLC_READ_CTRL) | I915_WRITE(FBC_LLC_READ_CTRL, I915_READ(FBC_LLC_READ_CTRL) |
FBC_LLC_FULLY_OPEN); FBC_LLC_FULLY_OPEN);
/* WaFbcNukeOnHostModify:skl */
I915_WRITE(ILK_DPFC_CHICKEN, I915_READ(ILK_DPFC_CHICKEN) |
ILK_DPFC_NUKE_ON_ANY_MODIFICATION);
} }
static void broadwell_init_clock_gating(struct drm_device *dev) static void broadwell_init_clock_gating(struct drm_device *dev)
......
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