source: bootcd/isolinux/syslinux-6.03/gpxe/src/arch/i386/include/bios_disks.h

#ifndef BIOS_DISKS_H
#define BIOS_DISKS_H

#include "dev.h"

/*
 * Constants
 *
 */

#define BIOS_DISK_MAX_NAME_LEN  6

struct bios_disk_sector {
        char data[512];
};

/*
 * The location of a BIOS disk
 *
 */
struct bios_disk_loc {
        uint8_t drive;
};

/*
 * A physical BIOS disk device
 *
 */
struct bios_disk_device {
        char name[BIOS_DISK_MAX_NAME_LEN];
        uint8_t drive;
        uint8_t type;
};

/*
 * A BIOS disk driver, with a valid device ID range and naming
 * function.
 *
 */
struct bios_disk_driver {
        void ( *fill_drive_name ) ( char *buf, uint8_t drive );
        uint8_t min_drive;
        uint8_t max_drive;
};

/*
 * Define a BIOS disk driver
 *
 */
#define BIOS_DISK_DRIVER( _name, _fill_drive_name, _min_drive, _max_drive )   \
        static struct bios_disk_driver _name = {                              \
                .fill_drive_name = _fill_drive_name,                          \
                .min_drive = _min_drive,                                      \
                .max_drive = _max_drive,                                      \
        }

/*
 * Functions in bios_disks.c
 *
 */


/*
 * bios_disk bus global definition
 *
 */
extern struct bus_driver bios_disk_driver;

#endif /* BIOS_DISKS_H */