/*
* Copyright (C) 2017 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
*
* Dummy SAN device
*
*/
#include <errno.h>
#include <ipxe/sanboot.h>
/**
* Hook dummy SAN device
*
* @v drive Drive number
* @v uris List of URIs
* @v count Number of URIs
* @ret drive Drive number, or negative error
*/
static int dummy_san_hook ( unsigned int drive, struct uri **uris,
unsigned int count ) {
struct san_device *sandev;
int rc;
/* Allocate SAN device */
sandev = alloc_sandev ( uris, count, 0 );
if ( ! sandev ) {
rc = -ENOMEM;
goto err_alloc;
}
sandev->drive = drive;
/* Register SAN device */
if ( ( rc = register_sandev ( sandev ) ) != 0 ) {
DBGC ( sandev, "SAN %#02x could not register: %s\n",
sandev->drive, strerror ( rc ) );
goto err_register;
}
return drive;
unregister_sandev ( sandev );
err_register:
sandev_put ( sandev );
err_alloc:
return rc;
}
/**
* Unhook dummy SAN device
*
* @v drive Drive number
*/
static void dummy_san_unhook ( unsigned int drive ) {
struct san_device *sandev;
/* Find drive */
sandev = sandev_find ( drive );
if ( ! sandev ) {
DBG ( "SAN %#02x does not exist\n", drive );
return;
}
/* Unregister SAN device */
unregister_sandev ( sandev );
/* Drop reference to drive */
sandev_put ( sandev );
}
/**
* Boot from dummy SAN device
*
* @v drive Drive number
*/
static int dummy_san_boot ( unsigned int drive __unused ) {
return -EOPNOTSUPP;
}
/**
* Describe dummy SAN device
*
* @v drive Drive number
*/
static int dummy_san_describe ( unsigned int drive __unused ) {
return 0;
}
PROVIDE_SANBOOT ( dummy, san_hook, dummy_san_hook );
PROVIDE_SANBOOT ( dummy, san_unhook, dummy_san_unhook );
PROVIDE_SANBOOT ( dummy, san_boot, dummy_san_boot );
PROVIDE_SANBOOT ( dummy, san_describe, dummy_san_describe );
