BIOS should be setting this, but in case it doesn't...
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
drivers/gpu/drm/i915/i915_gem.c | 3 +++
drivers/gpu/drm/i915/i915_reg.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 1417fc6..ee9c14c 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3986,6 +3986,9 @@ i915_gem_init_hw(struct drm_device *dev)
if (IS_HASWELL(dev) && (I915_READ(0x120010) == 1))
I915_WRITE(0x9008, I915_READ(0x9008) | 0xf0000);
+ if (HAS_PCH_NOP(dev))
+ I915_WRITE(GEN7_MSG_CTL, 0);
+
i915_gem_l3_remap(dev);
i915_gem_init_swizzling(dev);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4cf3ece..00b6a55 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3481,6 +3481,7 @@
#define DISP_ARB_CTL 0x45000
#define DISP_TILE_SURFACE_SWIZZLING (1<<13)
#define DISP_FBC_WM_DIS (1<<15)
+#define GEN7_MSG_CTL 0x45010
/* GEN7 chicken */
#define GEN7_COMMON_SLICE_CHICKEN1 0x7010
--
1.8.1.5
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