[linux.git] / include / linux / edd.h

/*
 * linux/include/linux/edd.h
 *  Copyright (C) 2002, 2003, 2004 Dell Inc.
 *  by Matt Domsch <[email protected]>
 *
 * 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 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/include/linux/edd.h
	3	* Copyright (C) 2002, 2003, 2004 Dell Inc.
	4	* by Matt Domsch <[email protected]>
	5	*
	6	* structures and definitions for the int 13h, ax={41,48}h
	7	* BIOS Enhanced Disk Drive Services
	8	* This is based on the T13 group document D1572 Revision 0 (August 14 2002)
	9	* available at http://www.t13.org/docs2002/d1572r0.pdf. It is
	10	* very similar to D1484 Revision 3 http://www.t13.org/docs2002/d1484r3.pdf
	11	*
	12	* In a nutshell, arch/{i386,x86_64}/boot/setup.S populates a scratch
	13	* table in the boot_params that contains a list of BIOS-enumerated
	14	* boot devices.
	15	* In arch/{i386,x86_64}/kernel/setup.c, this information is
	16	* transferred into the edd structure, and in drivers/firmware/edd.c, that
	17	* information is used to identify BIOS boot disk. The code in setup.S
	18	* is very sensitive to the size of these structures.
	19	*
	20	* This program is free software; you can redistribute it and/or modify
	21	* it under the terms of the GNU General Public License v2.0 as published by
	22	* the Free Software Foundation
	23	*
	24	* This program is distributed in the hope that it will be useful,
	25	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	26	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	27	* GNU General Public License for more details.
	28	*
	29	*/
	30	#ifndef _LINUX_EDD_H
	31	#define _LINUX_EDD_H
	32
607ca46e	33	#include <uapi/linux/edd.h>
1da177e4 LT	34
1da177e4 LT	35	#ifndef __ASSEMBLY__
1da177e4	36	extern struct edd edd;
1da177e4	37	#endif /!__ASSEMBLY__ /
1da177e4	38	#endif /* _LINUX_EDD_H */