The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/smapi.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2003 Matthew N. Dodd <winter@freebsd.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: stable/12/sys/i386/include/smapi.h 326260 2017-11-27 15:08:52Z pfg $
   29  */
   30 
   31 #ifndef _MACHINE_SMAPI_H_
   32 #define _MACHINE_SMAPI_H_
   33 
   34 #ifndef _KERNEL
   35 #include <sys/types.h>
   36 #endif
   37 #include <sys/ioccom.h>
   38 
   39 struct smapi_bios_header {
   40         u_int8_t        signature[4];   /* '$SMB' */
   41         u_int8_t        version_major;
   42         u_int8_t        version_minor;
   43         u_int8_t        length;
   44         u_int8_t        checksum;
   45         u_int16_t       information;
   46 #define SMAPI_REAL_VM86         0x0001
   47 #define SMAPI_PROT_16BIT        0x0002
   48 #define SMAPI_PROT_32BIT        0x0004
   49         u_int16_t       reserved1;
   50 
   51         u_int16_t       real16_offset;
   52         u_int16_t       real16_segment;
   53 
   54         u_int16_t       reserved2;
   55 
   56         u_int16_t       prot16_offset;
   57         u_int32_t       prot16_segment;
   58 
   59         u_int32_t       prot32_offset;
   60         u_int32_t       prot32_segment;
   61         
   62 } __packed;
   63 
   64 struct smapi_bios_parameter {
   65         union {
   66                 struct {
   67                         u_int8_t func;
   68                         u_int8_t sub_func;
   69                 } in;
   70                 struct {
   71                         u_int8_t rc;
   72                         u_int8_t sub_rc;
   73                 } out;
   74         } type;
   75 
   76         u_int16_t       param1;
   77         u_int16_t       param2;
   78         u_int16_t       param3;
   79 
   80         u_int32_t       param4;
   81         u_int32_t       param5;
   82 
   83 } __packed;
   84 
   85 #define cmd_func        type.in.func
   86 #define cmd_sub_func    type.in.sub_func
   87 #define rsp_rc          type.out.rc
   88 #define rsp_sub_rc      type.out.sub_rc
   89 
   90 #define SMAPIOGHEADER           _IOR('$', 0, struct smapi_bios_header)
   91 #define SMAPIOCGFUNCTION        _IOWR('$', 1, struct smapi_bios_parameter)
   92 
   93 #endif  /* _MACHINE_SMAPI_H_ */

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