SHOW CONTROLLER displays the specified controller's
                 information if the controller name is provided. If
                 the controller name is not provided, then information
                 of all the connected controllers is displayed.

                 The SHOW CONTROLLER command is synonymous to the
                 SHOW ADAPTER command.

                 Note: If the context is set to a specific controller
                       and the controller name is not provided, then
                       SHOW CONTROLLER displays information pertaining
                       only to the controller to which the context is
                       set.

                 Format:
                         SHOW CONTROLLER (Controller_name:) / <qualifiers>