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/*
* edd.h - real mode bios library for discovering EDD capabilities of
* BIOS drives
*
* Matt Wilson <msw@redhat.com>
*
* Copyright 2000 Red Hat, Inc.
*
* This software may be freely redistributed under the terms of the GNU
* library public license.
*
* You should have received a copy of the GNU Library Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef __EDD_H__
#define __EDD_H__
#include <sys/types.h>
#define EDD_ERROR 1
#define EDD_SUCCESS 0
#define EDD_CAPABILITY_EDA 1 << 0
#define EDD_CAPABILITY_REMOVABLE 1 << 1
#define EDD_CAPABILITY_EDD 1 << 2
typedef struct EDDParameters_t {
u_int16_t buffer_size;
u_int16_t info_flags;
u_int32_t cyls;
u_int32_t heads;
u_int32_t sectors;
u_int64_t total_sectors;
u_int16_t bytes_per_sector;
/* -- 2.0+ -- */
u_int32_t parameters;
/* -- 3.0 -- */
u_int16_t path_signature;
unsigned char path_length;
unsigned char path_reserved[3];
unsigned char path_bus[3];
unsigned char path_interface[8];
unsigned char path_interface_path[8];
unsigned char path_device_path[8];
unsigned char tail_reserved;
unsigned char checksum;
} EDDParameters;
typedef struct EDDCapability_t {
int drive;
struct {
int major, minor;
} version;
int eda : 1;
int removable : 1;
int edd : 1;
} EDDCapability;
EDDCapability * edd_supported(int drive);
EDDParameters * edd_get_parameters (EDDCapability *ec);
#endif /* __EDD_H__ */
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