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author | ache <ache@FreeBSD.org> | 1993-12-19 00:37:25 +0000 |
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committer | ache <ache@FreeBSD.org> | 1993-12-19 00:37:25 +0000 |
commit | 875d3cb5ae823fce94fa5c04efca220c6ac14ade (patch) | |
tree | fe4e57c2e44beab411546bd10740d7e4ffb5f259 /sys/i386/include/ioctl_fd.h | |
parent | 40e3061440a21abc3359bc66cc71a95afbcb1c90 (diff) | |
download | FreeBSD-src-875d3cb5ae823fce94fa5c04efca220c6ac14ade.zip FreeBSD-src-875d3cb5ae823fce94fa5c04efca220c6ac14ade.tar.gz |
From vak@kiae.su:
incorporate Joerg Wunsch floppy formatting code
Diffstat (limited to 'sys/i386/include/ioctl_fd.h')
-rw-r--r-- | sys/i386/include/ioctl_fd.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/sys/i386/include/ioctl_fd.h b/sys/i386/include/ioctl_fd.h new file mode 100644 index 0000000..7c59e56 --- /dev/null +++ b/sys/i386/include/ioctl_fd.h @@ -0,0 +1,86 @@ +/* + * 386BSD: + * format a floppy disk + * + * First, totally uncomfortable and unreliable version. + * USE AT YOUR OWN RISK. NEITHER KIND OF WARRANTY OR LIABILITY. + * No complaints about "lost data", "destroyed diskette", "blown + * controllers" or so are accepted. + * + * Detailed bug reports, bug fixes, and suggestions are welcome. + * Author & Copyright: + * (c) 1992, 1993 Joerg Wunsch, Dresden + * joerg_wunsch@uriah.sax.de + */ + +#ifndef _IOCTL_FD_H +#define _IOCTL_FD_H + +#include <sys/types.h> +#include <sys/ioctl.h> + +#define FD_FORMAT_VERSION 110 /* used to validate before formatting */ +#define FD_MAX_NSEC 36 /* highest known number of spt - allow for */ + /* 2.88 MB drives */ + +struct fd_formb { + int format_version; /* == FD_FORMAT_VERSION */ + int cyl, head; + int transfer_rate; /* fdreg.h: FDC_???KBPS */ + + union { + struct fd_form_data { + /* + * DO NOT CHANGE THE LAYOUT OF THIS STRUCTS + * it is hardware-dependant since it exactly + * matches the byte sequence to write to FDC + * during its `format track' operation + */ + u_char secshift; /* 0 -> 128, ...; usually 2 -> 512 */ + u_char nsecs; /* must be <= FD_MAX_NSEC */ + u_char gaplen; /* GAP 3 length; usually 84 */ + u_char fillbyte; /* usually 0xf6 */ + struct fd_idfield_data { + /* + * data to write into id fields; + * for obscure formats, they mustn't match + * the real values (but mostly do) + */ + u_char cylno; /* 0 thru 79 (or 39) */ + u_char headno; /* 0, or 1 */ + u_char secno; /* starting at 1! */ + u_char secsize; /* usually 2 */ + } idfields[FD_MAX_NSEC]; /* 0 <= idx < nsecs used */ + } structured; + u_char raw[1]; /* to have continuous indexed access */ + } format_info; +}; + +/* make life easier */ +# define fd_formb_secshift format_info.structured.secshift +# define fd_formb_nsecs format_info.structured.nsecs +# define fd_formb_gaplen format_info.structured.gaplen +# define fd_formb_fillbyte format_info.structured.fillbyte +/* these data must be filled in for(i = 0; i < fd_formb_nsecs; i++) */ +# define fd_formb_cylno(i) format_info.structured.idfields[i].cylno +# define fd_formb_headno(i) format_info.structured.idfields[i].headno +# define fd_formb_secno(i) format_info.structured.idfields[i].secno +# define fd_formb_secsize(i) format_info.structured.idfields[i].secsize + +struct fd_type { + int sectrac; /* sectors per track */ + int secsize; /* size code for sectors */ + int datalen; /* data len when secsize = 0 */ + int gap; /* gap len between sectors */ + int tracks; /* total num of tracks */ + int size; /* size of disk in sectors */ + int steptrac; /* steps per cylinder */ + int trans; /* transfer speed code */ + int heads; /* number of heads */ + int intleave; /* interleave factor */ +}; + +#define FD_FORM _IOW('F', 61, struct fd_formb) /* format a track */ +#define FD_GTYPE _IOR('F', 62, struct fd_type) /* get drive type */ + +#endif /* !def _IOCTL_FD_H */ |