drm/i915: HSW CRW stability magic
This magic brings stability to HSW CRW machines.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 04b0c07..bb941f8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3961,6 +3961,9 @@
if (!intel_enable_gtt())
return -EIO;
+ if (IS_HASWELL(dev) && (I915_READ(0x120010) == 1))
+ I915_WRITE(0x9008, I915_READ(0x9008) | 0xf0000);
+
i915_gem_l3_remap(dev);
i915_gem_init_swizzling(dev);