drm/i915: Use GGTT view when (un)pinning objects to planes

To support frame buffer rotation we need to be able to pass on the information
on what kind of GGTT view is required for display.

This patch just adds the parameter and makes all the callers default to the
normal view.

v2: Rebased for ggtt view changes.
v3: Don't limit PIN_MAPPABLE to normal views just yet. (Joonas Lahtinen)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v3)
[danvet: s/BUG/WARN/ in the patch hunk because. At least where the
BUG_ON isn't fatal right away.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -2765,8 +2765,10 @@ i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write);
 int __must_check
 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
 				     u32 alignment,
-				     struct intel_engine_cs *pipelined);
-void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj);
+				     struct intel_engine_cs *pipelined,
+				     const struct i915_ggtt_view *view);
+void i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj,
+					      const struct i915_ggtt_view *view);
 int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj,
 				int align);
 int i915_gem_open(struct drm_device *dev, struct drm_file *file);
@@ -2875,7 +2877,13 @@ i915_gem_object_ggtt_unbind(struct drm_i915_gem_object *obj)
 	return i915_vma_unbind(i915_gem_obj_to_ggtt(obj));
 }
 
-void i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj);
+void i915_gem_object_ggtt_unpin_view(struct drm_i915_gem_object *obj,
+				     const struct i915_ggtt_view *view);
+static inline void
+i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj)
+{
+	i915_gem_object_ggtt_unpin_view(obj, &i915_ggtt_view_normal);
+}
 
 /* i915_gem_context.c */
 int __must_check i915_gem_context_init(struct drm_device *dev);

drivers/gpu/drm/i915/i915_gem.c

@@ -3871,7 +3871,8 @@ static bool is_pin_display(struct drm_i915_gem_object *obj)
 int
 i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
 				     u32 alignment,
-				     struct intel_engine_cs *pipelined)
+				     struct intel_engine_cs *pipelined,
+				     const struct i915_ggtt_view *view)
 {
 	u32 old_read_domains, old_write_domain;
 	bool was_pin_display;
@@ -3907,7 +3908,7 @@ i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
 	 * (e.g. libkms for the bootup splash), we have to ensure that we
 	 * always use map_and_fenceable for all scanout buffers.
 	 */
-	ret = i915_gem_obj_ggtt_pin(obj, alignment, PIN_MAPPABLE);
+	ret = i915_gem_object_ggtt_pin(obj, view, alignment, PIN_MAPPABLE);
 	if (ret)
 		goto err_unpin_display;
 
@@ -3935,9 +3936,11 @@ i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj,
 }
 
 void
-i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj)
+i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj,
+					 const struct i915_ggtt_view *view)
 {
-	i915_gem_object_ggtt_unpin(obj);
+	i915_gem_object_ggtt_unpin_view(obj, view);
+
 	obj->pin_display = is_pin_display(obj);
 }
 
@@ -4214,15 +4217,16 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
 }
 
 void
-i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj)
+i915_gem_object_ggtt_unpin_view(struct drm_i915_gem_object *obj,
+				const struct i915_ggtt_view *view)
 {
-	struct i915_vma *vma = i915_gem_obj_to_ggtt(obj);
+	struct i915_vma *vma = i915_gem_obj_to_ggtt_view(obj, view);
 
 	BUG_ON(!vma);
-	BUG_ON(vma->pin_count == 0);
-	BUG_ON(!i915_gem_obj_ggtt_bound(obj));
+	WARN_ON(vma->pin_count == 0);
+	WARN_ON(!i915_gem_obj_ggtt_bound_view(obj, view->type));
 
-	if (--vma->pin_count == 0)
+	if (--vma->pin_count == 0 && view->type == I915_GGTT_VIEW_NORMAL)
 		obj->pin_mappable = false;
 }
 

drivers/gpu/drm/i915/intel_display.c

@@ -2350,7 +2350,8 @@ intel_pin_and_fence_fb_obj(struct drm_plane *plane,
 	intel_runtime_pm_get(dev_priv);
 
 	dev_priv->mm.interruptible = false;
-	ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
+	ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined,
+						   &i915_ggtt_view_normal);
 	if (ret)
 		goto err_interruptible;
 
@@ -2370,7 +2371,7 @@ intel_pin_and_fence_fb_obj(struct drm_plane *plane,
 	return 0;
 
 err_unpin:
-	i915_gem_object_unpin_from_display_plane(obj);
+	i915_gem_object_unpin_from_display_plane(obj, &i915_ggtt_view_normal);
 err_interruptible:
 	dev_priv->mm.interruptible = true;
 	intel_runtime_pm_put(dev_priv);
@@ -2382,7 +2383,7 @@ static void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
 	WARN_ON(!mutex_is_locked(&obj->base.dev->struct_mutex));
 
 	i915_gem_object_unpin_fence(obj);
-	i915_gem_object_unpin_from_display_plane(obj);
+	i915_gem_object_unpin_from_display_plane(obj, &i915_ggtt_view_normal);
 }
 
 /* Computes the linear offset to the base tile and adjusts x, y. bytes per pixel

drivers/gpu/drm/i915/intel_overlay.c

@@ -720,7 +720,8 @@ static int intel_overlay_do_put_image(struct intel_overlay *overlay,
 	if (ret != 0)
 		return ret;
 
-	ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL);
+	ret = i915_gem_object_pin_to_display_plane(new_bo, 0, NULL,
+						   &i915_ggtt_view_normal);
 	if (ret != 0)
 		return ret;