Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/source/include/linux/edd.h
/*
* linux/include/linux/edd.h
* Copyright (C) 2002, 2003, 2004 Dell Inc.
* by Matt Domsch <Matt_Domsch@dell.com>
*
* structures and definitions for the int 13h, ax={41,48}h
* BIOS Enhanced Disk Drive Services
* This is based on the T13 group document D1572 Revision 0 (August 14 2002)
* available at http://www.t13.org/docs2002/d1572r0.pdf. It is
* very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
*
* In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
* table in the boot_params that contains a list of BIOS-enumerated
* boot devices.
* In arch/{i386,x86_64}/kernel/setup.c, this information is
* transferred into the edd structure, and in drivers/firmware/edd.c, that
* information is used to identify BIOS boot disk. The code in setup.S
* is very sensitive to the size of these structures.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2.0 as published by
* the Free Software Foundation
*
* 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.
*
*/
#ifndef _LINUX_EDD_H
#define _LINUX_EDD_H
#include <uapi/linux/edd.h>
#ifndef __ASSEMBLY__
extern struct edd edd;
#endif /*!__ASSEMBLY__ */
#endif /* _LINUX_EDD_H */
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