drm/i915: capture the correct cursor registers on IVB

This solves some "unclaimed register" messages when there's a GPU hang
on Haswell.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Add missing IS_VLV check as spotted by Ville Syrjälä.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 502cb28a46c9..1dc6c18f3970 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9334,9 +9334,15 @@ intel_display_capture_error_state(struct drm_device *dev)
         for_each_pipe(i) {
                 cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, i);
 
-                error->cursor[i].control = I915_READ(CURCNTR(i));
-                error->cursor[i].position = I915_READ(CURPOS(i));
-                error->cursor[i].base = I915_READ(CURBASE(i));
+                if (INTEL_INFO(dev)->gen <= 6 || IS_VALLEYVIEW(dev)) {
+                        error->cursor[i].control = I915_READ(CURCNTR(i));
+                        error->cursor[i].position = I915_READ(CURPOS(i));
+                        error->cursor[i].base = I915_READ(CURBASE(i));
+                } else {
+                        error->cursor[i].control = I915_READ(CURCNTR_IVB(i));
+                        error->cursor[i].position = I915_READ(CURPOS_IVB(i));
+                        error->cursor[i].base = I915_READ(CURBASE_IVB(i));
+                }
 
                 error->plane[i].control = I915_READ(DSPCNTR(i));
                 error->plane[i].stride = I915_READ(DSPSTRIDE(i));