fdcio.h revision 877
1877Sache/* 2877Sache * 386BSD: 3877Sache * format a floppy disk 4877Sache * 5877Sache * First, totally uncomfortable and unreliable version. 6877Sache * USE AT YOUR OWN RISK. NEITHER KIND OF WARRANTY OR LIABILITY. 7877Sache * No complaints about "lost data", "destroyed diskette", "blown 8877Sache * controllers" or so are accepted. 9877Sache * 10877Sache * Detailed bug reports, bug fixes, and suggestions are welcome. 11877Sache * Author & Copyright: 12877Sache * (c) 1992, 1993 Joerg Wunsch, Dresden 13877Sache * joerg_wunsch@uriah.sax.de 14877Sache */ 15877Sache 16877Sache#ifndef _IOCTL_FD_H 17877Sache#define _IOCTL_FD_H 18877Sache 19877Sache#include <sys/types.h> 20877Sache#include <sys/ioctl.h> 21877Sache 22877Sache#define FD_FORMAT_VERSION 110 /* used to validate before formatting */ 23877Sache#define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ 24877Sache /* 2.88 MB drives */ 25877Sache 26877Sachestruct fd_formb { 27877Sache int format_version; /* == FD_FORMAT_VERSION */ 28877Sache int cyl, head; 29877Sache int transfer_rate; /* fdreg.h: FDC_???KBPS */ 30877Sache 31877Sache union { 32877Sache struct fd_form_data { 33877Sache /* 34877Sache * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS 35877Sache * it is hardware-dependant since it exactly 36877Sache * matches the byte sequence to write to FDC 37877Sache * during its `format track' operation 38877Sache */ 39877Sache u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ 40877Sache u_char nsecs; /* must be <= FD_MAX_NSEC */ 41877Sache u_char gaplen; /* GAP 3 length; usually 84 */ 42877Sache u_char fillbyte; /* usually 0xf6 */ 43877Sache struct fd_idfield_data { 44877Sache /* 45877Sache * data to write into id fields; 46877Sache * for obscure formats, they mustn't match 47877Sache * the real values (but mostly do) 48877Sache */ 49877Sache u_char cylno; /* 0 thru 79 (or 39) */ 50877Sache u_char headno; /* 0, or 1 */ 51877Sache u_char secno; /* starting at 1! */ 52877Sache u_char secsize; /* usually 2 */ 53877Sache } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ 54877Sache } structured; 55877Sache u_char raw[1]; /* to have continuous indexed access */ 56877Sache } format_info; 57877Sache}; 58877Sache 59877Sache/* make life easier */ 60877Sache# define fd_formb_secshift format_info.structured.secshift 61877Sache# define fd_formb_nsecs format_info.structured.nsecs 62877Sache# define fd_formb_gaplen format_info.structured.gaplen 63877Sache# define fd_formb_fillbyte format_info.structured.fillbyte 64877Sache/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ 65877Sache# define fd_formb_cylno(i) format_info.structured.idfields[i].cylno 66877Sache# define fd_formb_headno(i) format_info.structured.idfields[i].headno 67877Sache# define fd_formb_secno(i) format_info.structured.idfields[i].secno 68877Sache# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize 69877Sache 70877Sachestruct fd_type { 71877Sache int sectrac; /* sectors per track */ 72877Sache int secsize; /* size code for sectors */ 73877Sache int datalen; /* data len when secsize = 0 */ 74877Sache int gap; /* gap len between sectors */ 75877Sache int tracks; /* total num of tracks */ 76877Sache int size; /* size of disk in sectors */ 77877Sache int steptrac; /* steps per cylinder */ 78877Sache int trans; /* transfer speed code */ 79877Sache int heads; /* number of heads */ 80877Sache int intleave; /* interleave factor */ 81877Sache}; 82877Sache 83877Sache#define FD_FORM _IOW('F', 61, struct fd_formb) /* format a track */ 84877Sache#define FD_GTYPE _IOR('F', 62, struct fd_type) /* get drive type */ 85877Sache 86877Sache#endif /* !def _IOCTL_FD_H */ 87