695 	struct ccb_setasync csa;  in vtscsi_register_async()  local
697 	memset(&csa, 0, sizeof(csa));  in vtscsi_register_async()
698 	xpt_setup_ccb(&csa.ccb_h, sc->vtscsi_path, 5);  in vtscsi_register_async()
699 	csa.ccb_h.func_code = XPT_SASYNC_CB;  in vtscsi_register_async()
700 	csa.event_enable = AC_LOST_DEVICE | AC_FOUND_DEVICE;  in vtscsi_register_async()
701 	csa.callback = vtscsi_cam_async;  in vtscsi_register_async()
702 	csa.callback_arg = sc->vtscsi_sim;  in vtscsi_register_async()
704 	xpt_action((union ccb *) &csa);  in vtscsi_register_async()
706 	return (csa.ccb_h.status);  in vtscsi_register_async()
712 	struct ccb_setasync csa;  in vtscsi_deregister_async()  local
714 	memset(&csa, 0, sizeof(csa));  in vtscsi_deregister_async()
715 	xpt_setup_ccb(&csa.ccb_h, sc->vtscsi_path, 5);  in vtscsi_deregister_async()
716 	csa.ccb_h.func_code = XPT_SASYNC_CB;  in vtscsi_deregister_async()
717 	csa.event_enable = 0;  in vtscsi_deregister_async()
718 	csa.callback = vtscsi_cam_async;  in vtscsi_deregister_async()
719 	csa.callback_arg = sc->vtscsi_sim;  in vtscsi_deregister_async()
721 	xpt_action((union ccb *) &csa);  in vtscsi_deregister_async()