usr/src/uts/i86pc/sys/biosdisk.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_BIOSDISK_H
  27 #define _SYS_BIOSDISK_H
  28
  29 #include <sys/types.h>
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 typedef union device_path {
  36         struct {                        /* ATA or ATAPI or SATA */
  37                 unsigned char   chan;   /* 0 or 1 */
  38                 unsigned char   lun;    /* for ATAPI only */
  39         } ata;
  40         struct {
  41                 unsigned short  target;
  42                 uint32_t        lun_lo;
  43                 uint32_t        lun_hi;
  44         } scsi;
  45         struct {
  46                 uint64_t        usb_serial_id;
  47         } usb;
  48         struct {
  49                 uint64_t        eui;
  50         } s1394;
  51         struct {
  52                 uint64_t        wwid;
  53                 uint64_t        lun;
  54         } fibre;
  55         struct {
  56                 uint64_t        id_tag;
  57         } i2o;
  58
  59         struct {
  60                 uint32_t        raid_array_num;
  61         } raid;
  62         unsigned char pad[16];          /* total length */
  63 } device_path_t;
  64
  65
  66 typedef union interface_path {
  67                 struct {
  68                         unsigned short  baseport;
  69                 } isa;
  70                 struct {                /* PCI or PCIX */
  71                         unsigned char bus;
  72                         unsigned char device;
  73                         unsigned char function;
  74                         unsigned char channel;
  75                 } pci;
  76                 char    pad[8];
  77 } interface_path_t;
  78
  79 /*
  80  * Structure for Int 13 function 48 (EDD 3.0)
  81  *
  82  * from T13/1484D Revision 2
  83  */
  84
  85 #pragma pack(1)
  86 typedef struct int13_fn48_result {
  87         unsigned short          buflen;
  88         unsigned short          flags;
  89         uint32_t                ncyl;
  90         uint32_t                nhead;
  91         uint32_t                spt;
  92         uint32_t                nsect_lo;
  93         uint32_t                nsect_hi;
  94         unsigned short          bps;
  95         uint32_t                dpte;
  96         unsigned short          magic;          /* BEDD if Path info there */
  97         unsigned char           pathinfo_len;
  98         unsigned char           res1;
  99         unsigned short          res2;
 100         char                    bustype[4];     /* offset 36 */
 101         char                    interface_type[8];
 102         interface_path_t        interfacepath;
 103         device_path_t           devicepath;
 104         unsigned char           res3;
 105         unsigned char           checksum;       /* offset 73 */
 106 } fn48_t;
 107
 108 typedef struct int13_fn4b_result {
 109         uint8_t         pkt_size;       /* Packet size (== 0x13) */
 110
 111         uint8_t         boot_mtype;     /* Boot media type: see defines below */
 112
 113         uint8_t         drivenum;
 114         uint8_t         ctlr_idx;
 115         uint32_t        lba;
 116         uint16_t        dev_spec;
 117         uint16_t        buf_seg;
 118         uint16_t        load_seg;
 119         uint16_t        sect_cnt;
 120         uint8_t         cyl_0_7;        /* Bits 0-7 of the 9-bit cylinder cnt */
 121         /*
 122          * Bits 0-5: Sector count
 123          *      6-7: High 2 bits of the 9-bit cylinder count
 124          */
 125         uint8_t         sec_0_5_and_cyl_8_9;
 126         uint8_t         head_cnt;
 127 } fn4b_t;
 128
 129 #pragma pack()
 130
 131 typedef struct biosdev_data {
 132         uchar_t                 first_block_valid;
 133         uchar_t                 first_block[512];
 134         uchar_t                 edd_valid;
 135         fn48_t                  fn48_dev_params;
 136 } biosdev_data_t;
 137
 138 /*
 139  * Definitions for boot_mtype in fn4b_t
 140  */
 141 #define BOOT_MTYPE_MASK                 0xF
 142 #define BOOT_MTYPE(x)                   ((x) & BOOT_MTYPE_MASK)
 143 #define BOOT_MTYPE_NO_EMUL              0
 144 #define BOOT_MTYPE_1_2M_FLOPPY          1
 145 #define BOOT_MTYPE_1_44M_FLOPPY         2
 146 #define BOOT_MTYPE_2_88M_FLOPPY         3
 147 #define BOOT_MTYPE_HARD_DISK            4
 148 #define BOOT_MTYPE_INTF_MASK            0xC0
 149 #define BOOT_MTYPE_INTF_ATAPI           0x40
 150 #define BOOT_MTYPE_INTF_SCSI            0x80
 151 #define BOOT_MTYPE_IS_ATAPI(x) \
 152         (((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_ATAPI)
 153 #define BOOT_MTYPE_IS_SCSI(x) \
 154         (((x) & BOOT_MTYPE_INTF_MASK) == BOOT_MTYPE_INTF_SCSI)
 155
 156 #ifdef __cplusplus
 157 }
 158 #endif
 159
 160 #endif /* _SYS_BIOSDISK_H */