drm/i915: move gtt handling to i915_gem_gtt.c

No more drm_*_agp in i915_gem.c!
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_drv.h

@@ -1143,6 +1143,8 @@ void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv);
 
 /* i915_gem_gtt.c */
 void i915_gem_restore_gtt_mappings(struct drm_device *dev);
+int i915_gem_gtt_bind_object(struct drm_gem_object *obj);
+void i915_gem_gtt_unbind_object(struct drm_gem_object *obj);
 
 /* i915_gem_evict.c */
 int i915_gem_evict_something(struct drm_device *dev, int min_size,

drivers/gpu/drm/i915/i915_gem.c

@@ -2288,8 +2288,7 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
 	if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
 		i915_gem_clear_fence_reg(obj);
 
-	drm_unbind_agp(obj_priv->agp_mem);
-	drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE);
+	i915_gem_gtt_unbind_object(obj);
 
 	i915_gem_object_put_pages_gtt(obj);
 
@@ -2808,15 +2807,8 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj,
 		return ret;
 	}
 
-	/* Create an AGP memory structure pointing at our pages, and bind it
-	 * into the GTT.
-	 */
-	obj_priv->agp_mem = drm_agp_bind_pages(dev,
-					       obj_priv->pages,
-					       obj->size >> PAGE_SHIFT,
-					       obj_priv->gtt_space->start,
-					       obj_priv->agp_type);
-	if (obj_priv->agp_mem == NULL) {
+	ret = i915_gem_gtt_bind_object(obj);
+	if (ret) {
 		i915_gem_object_put_pages_gtt(obj);
 		drm_mm_put_block(obj_priv->gtt_space);
 		obj_priv->gtt_space = NULL;

drivers/gpu/drm/i915/i915_gem_gtt.c

@@ -47,3 +47,31 @@ void i915_gem_restore_gtt_mappings(struct drm_device *dev)
 	/* Be paranoid and flush the chipset cache. */
 	intel_gtt_chipset_flush();
 }
+
+int i915_gem_gtt_bind_object(struct drm_gem_object *obj)
+{
+	struct drm_device *dev = obj->dev;
+	struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+
+	/* Create an AGP memory structure pointing at our pages, and bind it
+	 * into the GTT.
+	 */
+	obj_priv->agp_mem = drm_agp_bind_pages(dev,
+					       obj_priv->pages,
+					       obj->size >> PAGE_SHIFT,
+					       obj_priv->gtt_space->start,
+					       obj_priv->agp_type);
+
+	if (obj_priv->agp_mem)
+		return 0;
+	else
+		return -ENOMEM;
+}
+
+void i915_gem_gtt_unbind_object(struct drm_gem_object *obj)
+{
+	struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
+
+	drm_unbind_agp(obj_priv->agp_mem);
+	drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE);
+}