/*-
 * Copyright (c) 2011 Hudson River Trading LLC
 * Written by: John H. Baldwin <jhb@FreeBSD.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _EDD_H_
#define _EDD_H_

/* Supported interfaces for "Check Extensions Present". */
#define EDD_INTERFACE_FIXED_DISK        0x01
#define EDD_INTERFACE_EJECT             0x02
#define EDD_INTERFACE_EDD               0x04

struct edd_packet {
        uint16_t        len;
        uint16_t        count;
        uint16_t        off;
        uint16_t        seg;
        uint64_t        lba;
};

struct edd_packet_v3 {
        uint16_t        len;
        uint16_t        count;
        uint16_t        off;
        uint16_t        seg;
        uint64_t        lba;
        uint64_t        phys_addr;
};

struct edd_params {
        uint16_t        len;
        uint16_t        flags;
        uint32_t        cylinders;
        uint32_t        heads;
        uint32_t        sectors_per_track;
        uint64_t        sectors;
        uint16_t        sector_size;
        uint16_t        edd_params_seg;
        uint16_t        edd_params_off;
} __packed;

struct edd_device_path_v3 {
        uint16_t        key;
        uint8_t         len;
        uint8_t         reserved[3];
        char            host_bus[4];
        char            interface[8];
        uint64_t        interface_path;
        uint64_t        device_path[2];
        uint8_t         reserved2[1];
        uint8_t         checksum;
} __packed;

struct edd_params_v3 {
        struct edd_params params;
        struct edd_device_path_v3 device_path;
} __packed;

#define EDD_FLAGS_DMA_BOUNDARY_HANDLING         0x0001
#define EDD_FLAGS_REMOVABLE_MEDIA               0x0002
#define EDD_FLAGS_WRITE_VERIFY                  0x0004
#define EDD_FLAGS_MEDIA_CHANGE_NOTIFICATION     0x0008
#define EDD_FLAGS_LOCKABLE_MEDIA                0x0010
#define EDD_FLAGS_NO_MEDIA_PRESENT              0x0020

#define EDD_DEVICE_PATH_KEY     0xbedd

#define EDD_QUERY_MAGIC         0x55aa
#define EDD_INSTALLED           0xaa55

#endif /* !_EDD_H_ */