drm/i915/bdw: Swizzling support

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5be1a154f09e..12bbd5eac70d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4362,6 +4362,8 @@ void i915_gem_init_swizzling(struct drm_device *dev)
                 I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_SNB));
         else if (IS_GEN7(dev))
                 I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB));
+        else if (IS_GEN8(dev))
+                I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_BDW));
         else
                 BUG();
 }
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3f303ba995c5..0c5cb3cea9c6 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -655,6 +655,8 @@
 #define ARB_MODE                0x04030
 #define   ARB_MODE_SWIZZLE_SNB  (1<<4)
 #define   ARB_MODE_SWIZZLE_IVB  (1<<5)
+#define GAMTARBMODE             0x04a08
+#define   ARB_MODE_SWIZZLE_BDW  (1<<1)
 #define RENDER_HWS_PGA_GEN7     (0x04080)
 #define RING_FAULT_REG(ring)    (0x4094 + 0x100*(ring)->id)
 #define   RING_FAULT_GTTSEL_MASK (1<<11)