fdcio.h revision 13765 
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 * $Id: ioctl_fd.h,v 1.7 1994/10/30 19:17:39 joerg Exp $
28 */
29
30#ifndef _IOCTL_FD_H
31#define _IOCTL_FD_H
32
33#include <sys/types.h>
34#include <sys/ioctl.h>
35
36#define FD_FORMAT_VERSION 110	/* used to validate before formatting */
37#define FD_MAX_NSEC 36		/* highest known number of spt - allow for */
38				/* 2.88 MB drives */
39
40struct fd_formb {
41	int format_version;	/* == FD_FORMAT_VERSION */
42	int cyl, head;
43	int transfer_rate;	/* fdreg.h: FDC_???KBPS */
44
45	union {
46		struct fd_form_data {
47			/*
48			 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS
49			 * it is hardware-dependent since it exactly
50			 * matches the byte sequence to write to FDC
51			 * during its `format track' operation
52			 */
53			u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */
54			u_char nsecs;	/* must be <= FD_MAX_NSEC */
55			u_char gaplen;	/* GAP 3 length; usually 84 */
56			u_char fillbyte; /* usually 0xf6 */
57			struct fd_idfield_data {
58				/*
59				 * data to write into id fields;
60				 * for obscure formats, they mustn't match
61				 * the real values (but mostly do)
62				 */
63				u_char cylno;	/* 0 thru 79 (or 39) */
64				u_char headno;	/* 0, or 1 */
65				u_char secno;	/* starting at 1! */
66				u_char secsize;	/* usually 2 */
67			} idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */
68		} structured;
69		u_char raw[1];	/* to have continuous indexed access */
70	} format_info;
71};
72
73/* make life easier */
74# define fd_formb_secshift   format_info.structured.secshift
75# define fd_formb_nsecs      format_info.structured.nsecs
76# define fd_formb_gaplen     format_info.structured.gaplen
77# define fd_formb_fillbyte   format_info.structured.fillbyte
78/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */
79# define fd_formb_cylno(i)   format_info.structured.idfields[i].cylno
80# define fd_formb_headno(i)  format_info.structured.idfields[i].headno
81# define fd_formb_secno(i)   format_info.structured.idfields[i].secno
82# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize
83
84struct fd_type {
85	int	sectrac;		/* sectors per track         */
86	int	secsize;		/* size code for sectors     */
87	int	datalen;		/* data len when secsize = 0 */
88	int	gap;			/* gap len between sectors   */
89	int	tracks;			/* total num of tracks       */
90	int	size;			/* size of disk in sectors   */
91	int	steptrac;		/* steps per cylinder        */
92	int	trans;			/* transfer speed code       */
93	int	heads;			/* number of heads	     */
94	int     f_gap;                  /* format gap len            */
95	int     f_inter;                /* format interleave factor  */
96};
97
98#define FD_FORM   _IOW('F', 61, struct fd_formb) /* format a track */
99#define FD_GTYPE  _IOR('F', 62, struct fd_type)  /* get drive type */
100#define FD_STYPE  _IOW('F', 63, struct fd_type)  /* set drive type */
101
102#define FD_GOPTS  _IOR('F', 64, int) /* drive options, see below */
103#define FD_SOPTS  _IOW('F', 65, int)
104
105#define FD_DEBUG  _IOW('F', 66, int)
106
107#define FDOPT_NORETRY 0x0001	/* no retries on failure (cleared on close) */
108
109/*
110 * The following definitions duplicate those in sys/i386/isa/fdreg.h
111 * They are here since their values are to be used in the above
112 * structure when formatting a floppy. For very obvious reasons, both
113 * definitions must match ;-)
114 */
115#ifndef FDC_500KBPS
116#define	FDC_500KBPS	0x00	/* 500KBPS MFM drive transfer rate */
117#define	FDC_300KBPS	0x01	/* 300KBPS MFM drive transfer rate */
118#define	FDC_250KBPS	0x02	/* 250KBPS MFM drive transfer rate */
119#define	FDC_125KBPS	0x03	/* 125KBPS FM drive transfer rate */
120				/* for some controllers 1MPBS instead */
121#endif /* FDC_500KBPS */
122
123#endif  /* !def _IOCTL_FD_H */
124