Checkpoint buffer object IOCTL stub.

diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index 5eb0983..9661b70 100644 (file)
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -306,9 +306,55 @@ int drm_bo_ioctl(DRM_IOCTL_ARGS)
 {
        DRM_DEVICE;
        drm_bo_arg_t arg;
-       unsigned long data_ptr;
-       (void) dev;
+       drm_bo_arg_request_t *req = &arg.req;
+       drm_bo_arg_reply_t rep;
+       unsigned long next;
+       drm_user_object_t *uo;
+       drm_buffer_object_t *entry;
+
+       do {
+               DRM_COPY_FROM_USER_IOCTL(arg, (void __user *)data, sizeof(arg));
+               rep.ret = 0;
+               rep.handled = 0;
+               switch (req->op) {
+               case drm_bo_destroy:
+                       mutex_lock(&dev->struct_mutex);
+                       uo = drm_lookup_user_object(priv, req->handle);
+                       if (!uo || (uo->type != drm_buffer_type) || uo->owner != priv) {
+                               mutex_unlock(&dev->struct_mutex);
+                               rep.ret = -EINVAL;
+                               break;
+                       }
+                       rep.ret = drm_remove_user_object(priv, uo);
+                       mutex_unlock(&dev->struct_mutex);
+                       break;
+               case drm_bo_reference: 
+                       rep.ret = drm_user_object_ref(priv, req->handle, 
+                                                     drm_buffer_type, &uo);
+                       if (rep.ret)
+                               break;
+                       mutex_lock(&dev->struct_mutex);
+                       uo = drm_lookup_user_object(priv, req->handle);
+                       entry = drm_user_object_entry(uo, drm_buffer_object_t, base);
+                       atomic_dec(&entry->usage);
+                       mutex_unlock(&dev->struct_mutex);
+                       break;
+               case drm_bo_unreference:
+                       rep.ret = drm_user_object_unref(priv, req->handle, 
+                                                       drm_buffer_type);
+                       break;
+               default:
+                       rep.ret = -EINVAL;
+               }
+               next = drm_ul(req->next);
+               rep.handled = 1;
+               arg.rep = rep;
+               DRM_COPY_TO_USER_IOCTL((void __user *)data, arg, sizeof(arg));
+               data = next;
+
+       } while (data);
        return 0;
+
 }