Avoids an undefined LLC behavior.

BSpec: 9613

v2: Renamed to Wa_1405733216
v3: Spaces around '<<' and fix surrounding code
v4: Rebased on top of the WA refactoring

Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h          | 5 +++--
 drivers/gpu/drm/i915/intel_workarounds.c | 6 ++++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fe35785..fea85ac 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7197,8 +7197,9 @@ enum {
 #define  L3SQ_URB_READ_CAM_MATCH_DISABLE       (1<<27)
 
 #define GEN8_L3SQCREG4                         _MMIO(0xb118)
-#define  GEN8_LQSC_RO_PERF_DIS                 (1<<27)
-#define  GEN8_LQSC_FLUSH_COHERENT_LINES                (1<<21)
+#define  GEN11_LQSC_CLEAN_EVICT_DISABLE                (1 << 6)
+#define  GEN8_LQSC_RO_PERF_DIS                 (1 << 27)
+#define  GEN8_LQSC_FLUSH_COHERENT_LINES                (1 << 21)
 
 /* GEN8 chicken */
 #define HDC_CHICKEN0                           _MMIO(0x7300)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c 
b/drivers/gpu/drm/i915/intel_workarounds.c
index e8d14a7..efa885c 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -726,6 +726,12 @@ static void icl_gt_workarounds_apply(struct 
drm_i915_private *dev_priv)
        I915_WRITE(GEN11_GACB_PERF_CTRL,
                   ((I915_READ(GEN11_GACB_PERF_CTRL) & ~GEN11_HASH_CTRL_MASK) |
                    GEN11_HASH_CTRL_BIT0 | GEN11_HASH_CTRL_BIT4));
+
+       /* Wa_1405733216:icl
+        * Formerly known as WaDisableCleanEvicts
+        */
+       I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
+                                   GEN11_LQSC_CLEAN_EVICT_DISABLE));
 }
 
 void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-- 
1.9.1

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