drm/i915/bdw: Expand FADD to 64bit
For error state, like the recent modification to ACTHD, FADD also gets
an upper dword. This is useful for debug to make sure the fetch address
and head are similar.
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_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1f927a5..393f93e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -835,6 +835,7 @@
#define RING_INSTDONE(base) ((base)+0x6c)
#define RING_INSTPS(base) ((base)+0x70)
#define RING_DMA_FADD(base) ((base)+0x78)
+#define RING_DMA_FADD_UDW(base) ((base)+0x60) /* gen8+ */
#define RING_INSTPM(base) ((base)+0xc0)
#define RING_MI_MODE(base) ((base)+0x9c)
#define INSTPS 0x02070 /* 965+ only */