edd.c

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/*
 * Copyright (C) 2010 Michael Brown <mbrown@fensystems.co.uk>.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 *
 * You can also choose to distribute this program under the terms of
 * the Unmodified Binary Distribution Licence (as given in the file
 * COPYING.UBDL), provided that you have satisfied its requirements.
 */
 
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
FILE_SECBOOT ( PERMITTED );
 
#include <errno.h>
#include <ipxe/interface.h>
#include <ipxe/edd.h>
 
/** @file
 *
 * Enhanced Disk Drive specification
 *
 */
 
/**
 * Describe a disk device using EDD
 *
 * @v intf              Interface
 * @v type              EDD interface type
 * @v path              EDD device path
 * @ret rc              Return status code
 */
int edd_describe ( struct interface *intf, struct edd_interface_type *type,
                   union edd_device_path *path ) {
        struct interface *dest;
        edd_describe_TYPE ( void * ) *op =
                intf_get_dest_op ( intf, edd_describe, &dest );
        void *object = intf_object ( dest );
        int rc;
 
        if ( op ) {
                rc = op ( object, type, path );
        } else {
                /* Default is to not support this operation */
                rc = -ENOTSUP;
        }
 
        intf_put ( dest );
        return rc;
}