Ioctl Requests fdio(7I)
NAME
fdio - floppy disk control operations
SYNOPSIS
#include
DESCRIPTION
The Solaris floppy driver supports a set of ioctl(2)
requests for getting and setting the floppy drive charac-
teristics. Basic to these ioctl() requests are the defini-
tions in .
IOCTLS
The following ioctl() requests are available on the Solaris
floppy driver.
FDEFGEOCHAR x86 based systems: This ioctl() forces the
floppy driver to restore the diskette and
drive characteristics and geometry, and par-
tition information to default values based
on the device configuration.
FDGETCHANGE The argument is a pointer to an int. This
ioctl() returns the status of the diskette-
changed signal from the floppy interface.
The following defines are provided for cohe-
sion.
Note: For x86 based systems, use FDGCDETECTED (which is
available only on x86 based systems) instead of
FDGCHISTORY.
/*
* Used by FDGETCHANGE, returned state of the sense disk change bit.
*/
#define FDGCHISTORY 0x01 /* disk has changed since insertion or
last FDGETCHANGE call */
#define FDGCURENT 0x02 /* if set, indicates drive has floppy,
> otherwise, drive is empty */
#define FDGCURWPROT 0x10 /* current state of write protect */
#define FDGCDETECTED 0x20 /* previous state of DISK CHANGE */
FDIOGCHAR The argument is a pointer to an fdchar struc-
ture (described below). This ioctl() gets the
characteristics of the floppy diskette from the
floppy controller.
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Ioctl Requests fdio(7I)
FDIOSCHAR The argument is a pointer to an fdchar struc-
ture (described below). This ioctl() sets the
characteristics of the floppy diskette for the
floppy controller. Typical values in the
fdchar structure for a high density diskette:
field value
fdcmedium 0
fdctransferrate 500
fdcncyl 80
fdcnhead 2
fdcsecsize 512
fdcsecptrack 18
fdcsteps -1 { This field doesn't apply. }
/*
* Floppy characteristics
*/
struct fdchar {
uchart fdcmedium; /* equals 1 if floppy is medium density format */
int fdctransferrate; /* transfer rate */
int fdcncyl; /* number of cylinders */
int fdcnhead; /* number of heads */
int fdcsecsize; /* sector size */
int fdcsecptrack; /* sectors per track */
int fdcsteps; /* no. of steps per data track */
};
FDGETDRIVECHAR The argument to this ioctl() is a pointer
to an fddrive structure (described
below). This ioctl() gets the characteris-
tics of the floppy drive from the floppy
controller.
FDSETDRIVECHAR x86 based systems: The argument to this
ioctl() is a pointer to an fddrive struc-
ture (described below). This ioctl() sets
the characteristics of the floppy drive
for the floppy controller. Only
fddsteprate, fddheadsettle, fddmotoron,
and fddmotoroff are actually used by the
floppy disk driver.
/*
* Floppy Drive characteristics
*/
struct fddrive {
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Ioctl Requests fdio(7I)
int fddejectable; /* does the drive support eject? */
int fddmaxsearch; /* size of per-unit search table */
int fddwriteprecomp; /* cyl to start write precompensation */
int fddwritereduce; /* cyl to start recucing write current */
int fddstepwidth; /* width of step pulse in 1 us units */
int fddsteprate; /* step rate in 100 us units */
int fddheadsettle; /* delay, in 100 us units */
int fddheadload; /* delay, in 100 us units */
int fddheadunload; /* delay, in 100 us units */
int fddmotoron; /* delay, in 100 ms units */
int fddmotoroff; /* delay, in 100 ms units */
int fddprecomplevel; /* bit shift, in nano-secs */
int fddpins; /* defines meaning of pin 1, 2, 4 and 34 */
int fddflags; /* TRUE READY, Starting Sector #, & Motor On */
};
FDGETSEARCH Not available.
FDSETSEARCH Not available.
FDEJECT SPARC: This ioctl() requests the floppy
drive to eject the diskette.
FDIOCMD The argument is a pointer to an fdcmd struc-
ture (described below). This ioctl() allows
access to the floppy diskette using the
floppy device driver. Only the FDCMDWRITE,
FDCMDREAD, and FDCMDFORMATRACK commands
are currently available.
struct fdcmd {
ushortt fdccmd; /* command to be executed */
int fdcflags; /* execution flags (x86 only) */
daddrt fdcblkno; /* disk address for command */
int fdcsecnt; /* sector count for command */
caddrt fdcbufaddr; /* user's buffer address */
uintt fdcbuflen; /* size of user's buffer */
};
Please note that the fdcbuflen field is currently unused.
The fdcsecnt field is used to calculate the transfer size,
and the buffer is assumed to be large enough to accommodate
the transfer.
{
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Ioctl Requests fdio(7I)
/*
* Floppy commands
*/
#define FDCMDWRITE 1
#define FDCMDREAD 2
#define FDCMDSEK 3
#define FDCMDREZERO 4
#define FDCMDFORMATUNIT 5
#define FDCMDFORMATRACK 6
};
FDRAW The argument is a pointer to an fdraw structure
(described below). This ioctl() allows direct
control of the floppy drive using the floppy con-
troller. Refer to the appropriate floppy-controller
data sheet for full details on required command
bytes and returned result bytes. The following com-
mands are supported.
/*
* Floppy raw commands
*/
#define FDRAWSPECIFY 0x03
#define FDRAWREADID 0x0a (x86 only)
#define FDRAWSENSEDRV 0x04
#define FDRAWREZERO 0x07
#define FDRAWSEK 0x0f
#define FDRAWSENSEINT 0x08 (x86 only)
#define FDRAWFORMAT 0x0d
#define FDRAWREADTRACK 0x02
#define FDRAWRCMD 0x05
#define FDRAWRDCMD 0x06
#define FDRAWRITEDEL 0x09
#define FDRAWREADEL 0x0c
Please note that when using FDRAWSEK or FDRAWREZERO,
the driver automatically issues a FDRAWSENSEINT command
to clear the interrupt from the FDRAWSEK or the
FDRAWREZERO. The result bytes returned by these commands
are the results from the FDRAWSENSEINT command. Please
see the floppy-controller data sheet for more details on
FDRAWSENSEINT.
/*
* Used by FDRAW
*/
struct fdraw {
char fdrcmd[10]; /* user-supplied command bytes */
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Ioctl Requests fdio(7I)
short fdrcnum; /* number of command bytes */
char fdrresult[10]; /* controller-supplied result bytes */
ushortt fdrnbytes; /* number to transfer if read/write command */
char *fdraddr; /* where to transfer if read/write command */
};
SEE ALSO
ioctl(2), dkio(7I), fd(7D), hdio(7I)
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