+static struct drm_mm_node *
+nv20_fb_alloc_tag(struct drm_device *dev, uint32_t size)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+ struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
+ struct drm_mm_node *mem;
+ int ret;
+
+ ret = drm_mm_pre_get(&pfb->tag_heap);
+ if (ret)
+ return NULL;
+
+ spin_lock(&dev_priv->tile.lock);
+ mem = drm_mm_search_free(&pfb->tag_heap, size, 0, 0);
+ if (mem)
+ mem = drm_mm_get_block_atomic(mem, size, 0);
+ spin_unlock(&dev_priv->tile.lock);
+
+ return mem;
+}
+
+static void
+nv20_fb_free_tag(struct drm_device *dev, struct drm_mm_node *mem)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ spin_lock(&dev_priv->tile.lock);
+ drm_mm_put_block(mem);
+ spin_unlock(&dev_priv->tile.lock);
+}
+