drm/i915: Restore all GGTT VMAs on resume

When rotated and partial views were added no one spotted the resume
path which assumes only one GGTT VMA per object and hence is now
skipping rebind of alternative views.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 9daa2883ac186f73c64baa40ba61aadfd0a94c9a..dcc6a88c560ebaf2b788971fe36984bd7402cf92 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -2546,6 +2546,8 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct drm_i915_gem_object *obj;
        struct i915_address_space *vm;
+       struct i915_vma *vma;
+       bool flush;
 
        i915_check_and_clear_faults(dev);
 
@@ -2555,16 +2557,23 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
                                       dev_priv->gtt.base.total,
                                       true);
 
+       /* Cache flush objects bound into GGTT and rebind them. */
+       vm = &dev_priv->gtt.base;
        list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
-               struct i915_vma *vma = i915_gem_obj_to_vma(obj,
-                                                          &dev_priv->gtt.base);
-               if (!vma)
-                       continue;
+               flush = false;
+               list_for_each_entry(vma, &obj->vma_list, vma_link) {
+                       if (vma->vm != vm)
+                               continue;
 
-               i915_gem_clflush_object(obj, obj->pin_display);
-               WARN_ON(i915_vma_bind(vma, obj->cache_level, PIN_UPDATE));
-       }
+                       WARN_ON(i915_vma_bind(vma, obj->cache_level,
+                                             PIN_UPDATE));
 
+                       flush = true;
+               }
+
+               if (flush)
+                       i915_gem_clflush_object(obj, obj->pin_display);
+       }
 
        if (INTEL_INFO(dev)->gen >= 8) {
                if (IS_CHERRYVIEW(dev) || IS_BROXTON(dev))