i86pc/sys/biosdisk.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_BIOSDISK_H
#define _SYS_BIOSDISK_H

#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef union device_path {
    struct {            /* ATA or ATAPI or SATA */
        unsigned char   chan;   /* 0 or 1 */
        unsigned char   lun;    /* for ATAPI only */
    } ata;
    struct {
        unsigned short  target;
        uint32_t    lun_lo;
        uint32_t    lun_hi;
    } scsi;
    struct {
        uint64_t    usb_serial_id;
    } usb;
    struct {
        uint64_t    eui;
    } s1394;
    struct {
        uint64_t    wwid;
        uint64_t    lun;
    } fibre;
    struct {
        uint64_t    id_tag;
    } i2o;

    struct {
        uint32_t    raid_array_num;
    } raid;
    unsigned char pad[16];      /* total length */
} device_path_t;


typedef union interface_path {
        struct {
            unsigned short  baseport;
        } isa;
        struct {        /* PCI or PCIX */
            unsigned char bus;
            unsigned char device;
            unsigned char function;
            unsigned char channel;
        } pci;
        char    pad[8];
} interface_path_t;

/*
 * Structure for Int 13 function 48 (EDD 3.0)
 *
 * from T13/1484D Revision 2
 */

#pragma pack(1)
typedef struct int13_fn48_result {
    unsigned short      buflen;
    unsigned short      flags;
    uint32_t        ncyl;
    uint32_t        nhead;
    uint32_t        spt;
    uint32_t        nsect_lo;
    uint32_t        nsect_hi;
    unsigned short      bps;
    uint32_t        dpte;
    unsigned short      magic;      /* BEDD if Path info there */
    unsigned char       pathinfo_len;
    unsigned char       res1;
    unsigned short      res2;
    char            bustype[4]; /* offset 36 */
    char            interface_type[8];
    interface_path_t    interfacepath;
    device_path_t       devicepath;
    unsigned char       res3;
    unsigned char       checksum;   /* offset 73 */
} fn48_t;

typedef struct int13_fn4b_result {
    uint8_t     pkt_size;   /* Packet size (== 0x13) */

    uint8_t     boot_mtype; /* Boot media type: see defines below */

    uint8_t     drivenum;
    uint8_t     ctlr_idx;
    uint32_t    lba;
    uint16_t    dev_spec;
    uint16_t    buf_seg;
    uint16_t    load_seg;
    uint16_t    sect_cnt;
    uint8_t     cyl_0_7;    /* Bits 0-7 of the 9-bit cylinder cnt */
    /*
     * Bits 0-5: Sector count
     *  6-7: High 2 bits of the 9-bit cylinder count
     */
    uint8_t     sec_0_5_and_cyl_8_9;
    uint8_t     head_cnt;
} fn4b_t;

#pragma pack()

typedef struct biosdev_data {
    uchar_t         first_block_valid;
    uchar_t         first_block[512];
    uchar_t         edd_valid;
    fn48_t          fn48_dev_params;
} biosdev_data_t;

/*
 * Definitions for boot_mtype in fn4b_t
 */
#define BOOT_MTYPE_MASK         0xF
#define BOOT_MTYPE(x)           ((x) & BOOT_MTYPE_MASK)
#define BOOT_MTYPE_NO_EMUL      0
#define BOOT_MTYPE_1_2M_FLOPPY      1
#define BOOT_MTYPE_1_44M_FLOPPY     2
#define BOOT_MTYPE_2_88M_FLOPPY     3
#define BOOT_MTYPE_HARD_DISK        4
#define BOOT_MTYPE_INTF_MASK        0xC0
#define BOOT_MTYPE_INTF_ATAPI       0x40
#define BOOT_MTYPE_INTF_SCSI        0x80
#define BOOT_MTYPE_IS_ATAPI(x) \
    (((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_ATAPI)
#define BOOT_MTYPE_IS_SCSI(x) \
    (((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_SCSI)

#ifdef __cplusplus
}
#endif

#endif /* _SYS_BIOSDISK_H */