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/ioctl_fd.h

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    1 /*
    2  * Copyright (C) 1992-1994 by Joerg Wunsch, Dresden
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY
   15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
   20  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
   21  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   22  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
   24  * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
   25  * DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 #ifndef _MACHINE_IOCTL_FD_H_
   31 #define _MACHINE_IOCTL_FD_H_
   32 
   33 #ifndef KERNEL
   34 #include <sys/types.h>
   35 #endif
   36 #include <sys/ioccom.h>
   37 
   38 #define FD_FORMAT_VERSION 110   /* used to validate before formatting */
   39 #define FD_MAX_NSEC 36          /* highest known number of spt - allow for */
   40                                 /* 2.88 MB drives */
   41 
   42 struct fd_formb {
   43         int format_version;     /* == FD_FORMAT_VERSION */
   44         int cyl, head;
   45         int transfer_rate;      /* fdreg.h: FDC_???KBPS */
   46 
   47         union {
   48                 struct fd_form_data {
   49                         /*
   50                          * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS
   51                          * it is hardware-dependent since it exactly
   52                          * matches the byte sequence to write to FDC
   53                          * during its `format track' operation
   54                          */
   55                         u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */
   56                         u_char nsecs;   /* must be <= FD_MAX_NSEC */
   57                         u_char gaplen;  /* GAP 3 length; usually 84 */
   58                         u_char fillbyte; /* usually 0xf6 */
   59                         struct fd_idfield_data {
   60                                 /*
   61                                  * data to write into id fields;
   62                                  * for obscure formats, they mustn't match
   63                                  * the real values (but mostly do)
   64                                  */
   65                                 u_char cylno;   /* 0 thru 79 (or 39) */
   66                                 u_char headno;  /* 0, or 1 */
   67                                 u_char secno;   /* starting at 1! */
   68                                 u_char secsize; /* usually 2 */
   69                         } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */
   70                 } structured;
   71                 u_char raw[1];  /* to have continuous indexed access */
   72         } format_info;
   73 };
   74 
   75 /* make life easier */
   76 # define fd_formb_secshift   format_info.structured.secshift
   77 # define fd_formb_nsecs      format_info.structured.nsecs
   78 # define fd_formb_gaplen     format_info.structured.gaplen
   79 # define fd_formb_fillbyte   format_info.structured.fillbyte
   80 /* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */
   81 # define fd_formb_cylno(i)   format_info.structured.idfields[i].cylno
   82 # define fd_formb_headno(i)  format_info.structured.idfields[i].headno
   83 # define fd_formb_secno(i)   format_info.structured.idfields[i].secno
   84 # define fd_formb_secsize(i) format_info.structured.idfields[i].secsize
   85 
   86 struct fd_type {
   87         int     sectrac;                /* sectors per track         */
   88         int     secsize;                /* size code for sectors     */
   89         int     datalen;                /* data len when secsize = 0 */
   90         int     gap;                    /* gap len between sectors   */
   91         int     tracks;                 /* total num of tracks       */
   92         int     size;                   /* size of disk in sectors   */
   93         int     steptrac;               /* steps per cylinder        */
   94         int     trans;                  /* transfer speed code       */
   95         int     heads;                  /* number of heads           */
   96         int     f_gap;                  /* format gap len            */
   97         int     f_inter;                /* format interleave factor  */
   98 };
   99 
  100 #define FD_FORM   _IOW('F', 61, struct fd_formb) /* format a track */
  101 #define FD_GTYPE  _IOR('F', 62, struct fd_type)  /* get drive type */
  102 #define FD_STYPE  _IOW('F', 63, struct fd_type)  /* set drive type */
  103 
  104 #define FD_GOPTS  _IOR('F', 64, int) /* drive options, see below */
  105 #define FD_SOPTS  _IOW('F', 65, int)
  106 
  107 #define FD_DEBUG  _IOW('F', 66, int)
  108 
  109 #define FDOPT_NORETRY 0x0001    /* no retries on failure (cleared on close) */
  110 
  111 /*
  112  * The following definitions duplicate those in sys/i386/isa/fdreg.h
  113  * They are here since their values are to be used in the above
  114  * structure when formatting a floppy. For very obvious reasons, both
  115  * definitions must match ;-)
  116  */
  117 #ifndef FDC_500KBPS
  118 #define FDC_500KBPS     0x00    /* 500KBPS MFM drive transfer rate */
  119 #define FDC_300KBPS     0x01    /* 300KBPS MFM drive transfer rate */
  120 #define FDC_250KBPS     0x02    /* 250KBPS MFM drive transfer rate */
  121 #define FDC_125KBPS     0x03    /* 125KBPS FM drive transfer rate */
  122                                 /* for some controllers 1MPBS instead */
  123 #endif /* FDC_500KBPS */
  124 
  125 #endif /* !_MACHINE_IOCTL_FD_H_ */

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