1/*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 1992-1994,2001 by Joerg Wunsch, Dresden 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(S) ``AS IS'' AND ANY 17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 22 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 24 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 26 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 27 * DAMAGE. 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 42struct fd_formb { 43 int format_version; /* == FD_FORMAT_VERSION */ 44 int cyl, head; 45 int transfer_rate; /* FDC_???KBPS */ 46 47 struct fd_form_data { 48 /* 49 * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 50 * it is hardware-dependent since it exactly 51 * matches the byte sequence to write to FDC 52 * during its `format track' operation 53 */ 54 u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 55 u_char nsecs; /* must be <= FD_MAX_NSEC */ 56 u_char gaplen; /* GAP 3 length; usually 84 */ 57 u_char fillbyte; /* usually 0xf6 */ 58 struct fd_idfield_data { 59 /* 60 * data to write into id fields; 61 * for obscure formats, they mustn't match 62 * the real values (but mostly do) 63 */ 64 u_char cylno; /* 0 thru 79 (or 39) */ 65 u_char headno; /* 0, or 1 */ 66 u_char secno; /* starting at 1! */ 67 u_char secsize; /* usually 2 */ 68 } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 69 } format_info; 70}; 71 72/* make life easier */ 73# define fd_formb_secshift format_info.secshift 74# define fd_formb_nsecs format_info.nsecs 75# define fd_formb_gaplen format_info.gaplen 76# define fd_formb_fillbyte format_info.fillbyte 77/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 78# define fd_formb_cylno(i) format_info.idfields[i].cylno 79# define fd_formb_headno(i) format_info.idfields[i].headno 80# define fd_formb_secno(i) format_info.idfields[i].secno 81# define fd_formb_secsize(i) format_info.idfields[i].secsize 82 83struct fd_type { 84 int sectrac; /* sectors per track */ 85 int secsize; /* size code for sectors */ 86 int datalen; /* data len when secsize = 0 */ 87 int gap; /* gap len between sectors */ 88 int tracks; /* total number of cylinders */ 89 int size; /* size of disk in sectors */ 90 int trans; /* transfer speed code */ 91 int heads; /* number of heads */ 92 int f_gap; /* format gap len */ 93 int f_inter; /* format interleave factor */ 94 int offset_side2; /* offset of sectors on side2 */ 95 int flags; /* misc. features */ 96#define FL_MFM 0x0001 /* MFM recording */ 97#define FL_2STEP 0x0002 /* 2 steps between cylinders */ 98#define FL_PERPND 0x0004 /* perpendicular recording */ 99#define FL_AUTO 0x0008 /* autodetect format */ 100}; 101 102struct fdc_status { 103 u_int status[7]; 104}; 105 106/* 107 * cyl and head are being passed into ioctl(FD_READID) 108 * all four fields are being returned 109 */ 110struct fdc_readid { 111 u_char cyl; /* C - 0...79 */ 112 u_char head; /* H - 0...1 */ 113 u_char sec; /* R - 1...n */ 114 u_char secshift; /* N - log2(secsize / 128) */ 115}; 116 117/* 118 * Diskette drive type, basically the same as stored in RTC on ISA 119 * machines (see /sys/isa/rtc.h), but right-shifted by four bits. 120 */ 121enum fd_drivetype { 122 FDT_NONE, FDT_360K, FDT_12M, FDT_720K, FDT_144M, FDT_288M_1, 123 FDT_288M 124}; 125 126#define FD_FORM _IOW('F', 61, struct fd_formb) /* format a track */ 127#define FD_GTYPE _IOR('F', 62, struct fd_type) /* get drive type */ 128#define FD_STYPE _IOW('F', 63, struct fd_type) /* set drive type */ 129 130#define FD_GOPTS _IOR('F', 64, int) /* drive options, see below */ 131#define FD_SOPTS _IOW('F', 65, int) 132 133#define FD_CLRERR _IO('F', 67) /* clear error counter */ 134 135#define FD_READID _IOWR('F', 68, struct fdc_readid) /* read ID field */ 136 137/* 138 * Obtain NE765 status registers. Only successful if there is 139 * a valid status stored in fdc->status[]. 140 */ 141#define FD_GSTAT _IOR('F', 69, struct fdc_status) 142 143#define FD_GDTYPE _IOR('F', 70, enum fd_drivetype) /* obtain drive type */ 144 145/* Options for FD_GOPTS/FD_SOPTS, cleared on device close */ 146#define FDOPT_NORETRY 0x0001 /* no retries on failure */ 147#define FDOPT_NOERRLOG 0x002 /* no "hard error" kernel log messages */ 148#define FDOPT_NOERROR 0x0004 /* do not indicate errors, caller will use 149 FD_GSTAT in order to obtain status */ 150 151/* 152 * Transfer rate definitions. Used in the structures above. They 153 * represent the hardware encoding of bits 0 and 1 of the FDC control 154 * register when writing to the register. 155 * Transfer rates for FM encoding are half the values listed here 156 * (but we currently don't support FM encoding). 157 */ 158#define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 159#define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 160#define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 161#define FDC_1MBPS 0x03 /* 1MPBS MFM drive transfer rate */ 162 163/* 164 * Parameters for common formats 165 * 166 * See struct fd_type for layout. 167 * XXX: Field 'size' must be calculated. 168 * XXX: Fields 'f_inter' and 'offset_side2' are unused by kernel. 169 * 170 * XXX: These should really go in a /etc/floppycap colon separated file 171 * XXX: but the kernel needs some of them for proper defaults and it would 172 * XXX: should have been done 20 years ago to make sense. 173 */ 174#define FDF_3_2880 36,2,0xFF,0x1B,80,0,FDC_1MBPS,002,0x4C,1,1,FL_MFM|FL_PERPND 175#define FDF_3_1722 21,2,0xFF,0x04,82,0,FDC_500KBPS,2,0x0C,2,0,FL_MFM 176#define FDF_3_1476 18,2,0xFF,0x1B,82,0,FDC_500KBPS,2,0x6C,1,0,FL_MFM 177#define FDF_3_1440 18,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x6C,1,0,FL_MFM 178#define FDF_3_1200 15,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x54,1,0,FL_MFM 179#define FDF_3_820 10,2,0xFF,0x10,82,0,FDC_250KBPS,2,0x2e,1,0,FL_MFM 180#define FDF_3_800 10,2,0xFF,0x10,80,0,FDC_250KBPS,2,0x2e,1,0,FL_MFM 181#define FDF_3_720 9,2,0xFF,0x20,80,0,FDC_250KBPS,2,0x50,1,0,FL_MFM 182#define FDF_5_1480 18,2,0xFF,0x02,82,0,FDC_500KBPS,2,0x02,2,0,FL_MFM 183#define FDF_5_1440 18,2,0xFF,0x02,80,0,FDC_500KBPS,2,0x02,2,0,FL_MFM 184#define FDF_5_1230 8,3,0xFF,0x35,77,0,FDC_500KBPS,2,0x74,1,0,FL_MFM 185#define FDF_5_1200 15,2,0xFF,0x1B,80,0,FDC_500KBPS,2,0x54,1,0,FL_MFM 186#define FDF_5_820 10,2,0xFF,0x10,82,0,FDC_300KBPS,2,0x2e,1,0,FL_MFM 187#define FDF_5_800 10,2,0xFF,0x10,80,0,FDC_300KBPS,2,0x2e,1,0,FL_MFM 188#define FDF_5_720 9,2,0xFF,0x20,80,0,FDC_300KBPS,2,0x50,1,0,FL_MFM 189#define FDF_5_640 8,2,0xFF,0x2A,80,0,FDC_300KBPS,2,0x50,1,0,FL_MFM 190#define FDF_5_400 10,2,0xFF,0x10,80,0,FDC_300KBPS,1,0x2e,1,0,FL_MFM /* RX50 */ 191#define FDF_5_360 9,2,0xFF,0x23,40,0,FDC_300KBPS,2,0x50,1,0,FL_MFM 192/* XXX: 0x2a ? */ 193 194#endif /* !_MACHINE_IOCTL_FD_H_ */ 195