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-rw-r--r--drivers/gpu/drm/i915/i915_gem_gtt.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index a336c4d609a..fae638072d7 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -117,6 +117,11 @@ static int gen6_ppgtt_enable(struct drm_device *dev)
ECOCHK_PPGTT_CACHE64B);
I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE));
} else if (INTEL_INFO(dev)->gen >= 7) {
+ uint32_t ecobits;
+
+ ecobits = I915_READ(GAC_ECO_BITS);
+ I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B);
+
I915_WRITE(GAM_ECOCHK, ECOCHK_PPGTT_CACHE64B);
/* GFX_MODE is per-ring on gen7+ */
}