mirror of https://github.com/ipxe/ipxe.git
131 lines
3.1 KiB
C
131 lines
3.1 KiB
C
/*
|
|
* 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
|
|
* @v flags Flags
|
|
* @ret drive Drive number, or negative error
|
|
*/
|
|
static int dummy_san_hook ( unsigned int drive, struct uri **uris,
|
|
unsigned int count, unsigned int flags ) {
|
|
struct san_device *sandev;
|
|
int rc;
|
|
|
|
/* Allocate SAN device */
|
|
sandev = alloc_sandev ( uris, count, 0 );
|
|
if ( ! sandev ) {
|
|
rc = -ENOMEM;
|
|
goto err_alloc;
|
|
}
|
|
|
|
/* Register SAN device */
|
|
if ( ( rc = register_sandev ( sandev, drive, flags ) ) != 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;
|
|
}
|
|
|
|
/**
|
|
* Install ACPI table
|
|
*
|
|
* @v acpi ACPI description header
|
|
* @ret rc Return status code
|
|
*/
|
|
static int dummy_install ( struct acpi_header *acpi ) {
|
|
|
|
DBGC ( acpi, "ACPI table %s:\n", acpi_name ( acpi->signature ) );
|
|
DBGC_HDA ( acpi, 0, acpi, le32_to_cpu ( acpi->length ) );
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Describe dummy SAN device
|
|
*
|
|
* @ret rc Return status code
|
|
*/
|
|
static int dummy_san_describe ( void ) {
|
|
|
|
return acpi_install ( dummy_install );
|
|
}
|
|
|
|
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 );
|