<?php
       $mainquery = new WP_Query(array(
      'post_type' => 'smi',
      'order' => 'DESC',
      'posts_per_page' => -1
       ));
         if ( $mainquery->have_posts() ) {
         while ( $mainquery->have_posts() ) {
         $mainquery->the_post();
         ?>

            Блаблабла

        <?php }
        } else {
        // no posts found
        }
        /* Restore original Post Data */
        wp_reset_postdata();
        ?>