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'\" te
.\" Copyright (c) 2001, Sun Microsystems, Inc. All Rights Reserved
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
.TH FDIO 7I "Apr 26, 2001"
.SH NAME
fdio \- floppy disk control operations
.SH SYNOPSIS
.LP
.nf
\fB#include <sys/fdio.h>\fR
.fi
.SH DESCRIPTION
.sp
.LP
The Solaris floppy driver supports a set of \fBioctl\fR(2) requests for getting
and setting the floppy drive characteristics. Basic to these \fBioctl\fR(\|)
requests are the definitions in \fB<sys/fdio.h>\fR\&.
.SH IOCTLS
.sp
.LP
The following \fBioctl\fR(\|) requests are available on the Solaris floppy
driver.
.sp
.ne 2
.na
\fB\fBFDDEFGEOCHAR\fR\fR
.ad
.RS 16n
x86 based systems: This \fBioctl\fR(\|) forces the floppy driver to restore
the diskette and drive characteristics and geometry, and partition information
to default values based on the device configuration.
.RE
.sp
.ne 2
.na
\fB\fBFDGETCHANGE\fR\fR
.ad
.RS 16n
The argument is a pointer to an \fBint.\fR This \fBioctl\fR(\|) returns the
status of the diskette-changed signal from the floppy interface. The following
defines are provided for cohesion.
.RE
.sp
.LP
Note: For x86 based systems, use \fBFDGC_DETECTED\fR (which is available only
on x86 based systems) instead of \fBFDGC_HISTORY.\fR
.sp
.in +2
.nf
/*
* Used by FDGETCHANGE, returned state of the sense disk change bit.
*/
#define FDGC_HISTORY 0x01 /* disk has changed since insertion or
last FDGETCHANGE call */
#define FDGC_CURRENT 0x02 /* if set, indicates drive has floppy,
> otherwise, drive is empty */
#define FDGC_CURWPROT 0x10 /* current state of write protect */
#define FDGC_DETECTED 0x20 /* previous state of DISK CHANGE */
.fi
.in -2
.sp
.ne 2
.na
\fB\fBFDIOGCHAR\fR\fR
.ad
.RS 13n
The argument is a pointer to an \fBfd_char\fR structure (described below). This
\fBioctl\fR(\|) gets the characteristics of the floppy diskette from the floppy
controller.
.RE
.sp
.ne 2
.na
\fB\fBFDIOSCHAR\fR\fR
.ad
.RS 13n
The argument is a pointer to an \fBfd_char\fR structure (described below). This
\fBioctl\fR(\|) sets the characteristics of the floppy diskette for the floppy
controller. Typical values in the \fBfd_char\fR structure for a high density
diskette:
.sp
.in +2
.nf
field value
fdc_medium 0
fdc_transfer_rate 500
fdc_ncyl 80
fdc_nhead 2
fdc_sec_size 512
fdc_secptrack 18
fdc_steps -1 { This field doesn't apply. }
.fi
.in -2
.RE
.sp
.in +2
.nf
/*
* Floppy characteristics
*/
struct fd_char {
uchar_t fdc_medium; /* equals 1 if floppy is medium density format */
int fdc_transfer_rate; /* transfer rate */
int fdc_ncyl; /* number of cylinders */
int fdc_nhead; /* number of heads */
int fdc_sec_size; /* sector size */
int fdc_secptrack; /* sectors per track */
int fdc_steps; /* no. of steps per data track */
};
.fi
.in -2
.sp
.ne 2
.na
\fB\fBFDGETDRIVECHAR\fR\fR
.ad
.RS 18n
The argument to this \fBioctl\fR(\|) is a pointer to an \fBfd_drive\fR
structure (described below). This \fBioctl\fR(\|) gets the characteristics of
the floppy drive from the floppy controller.
.RE
.sp
.ne 2
.na
\fB\fBFDSETDRIVECHAR\fR\fR
.ad
.RS 18n
x86 based systems: The argument to this \fBioctl\fR(\|) is a pointer to an
\fBfd_drive\fR structure (described below). This \fBioctl\fR(\|) sets the
characteristics of the floppy drive for the floppy controller. Only
\fBfdd_steprate\fR, \fBfdd_headsettle\fR, \fBfdd_motoron\fR, and
\fBfdd_motoroff\fR are actually used by the floppy disk driver.
.RE
.sp
.in +2
.nf
/*
* Floppy Drive characteristics
*/
struct fd_drive {
int fdd_ejectable; /* does the drive support eject? */
int fdd_maxsearch; /* size of per-unit search table */
int fdd_writeprecomp; /* cyl to start write precompensation */
int fdd_writereduce; /* cyl to start recucing write current */
int fdd_stepwidth; /* width of step pulse in 1 us units */
int fdd_steprate; /* step rate in 100 us units */
int fdd_headsettle; /* delay, in 100 us units */
int fdd_headload; /* delay, in 100 us units */
int fdd_headunload; /* delay, in 100 us units */
int fdd_motoron; /* delay, in 100 ms units */
int fdd_motoroff; /* delay, in 100 ms units */
int fdd_precomplevel; /* bit shift, in nano-secs */
int fdd_pins; /* defines meaning of pin 1, 2, 4 and 34 */
int fdd_flags; /* TRUE READY, Starting Sector #, & Motor On */
};
.fi
.in -2
.sp
.ne 2
.na
\fB\fBFDGETSEARCH\fR\fR
.ad
.RS 15n
Not available.
.RE
.sp
.ne 2
.na
\fB\fBFDSETSEARCH\fR\fR
.ad
.RS 15n
Not available.
.RE
.sp
.ne 2
.na
\fB\fBFDEJECT\fR\fR
.ad
.RS 15n
SPARC: This \fBioctl\fR(\|) requests the floppy drive to eject the diskette.
.RE
.sp
.ne 2
.na
\fB\fBFDIOCMD\fR\fR
.ad
.RS 15n
The argument is a pointer to an \fBfd_cmd\fR structure (described below). This
\fBioctl\fR(\|) allows access to the floppy diskette using the floppy device
driver. Only the \fBFDCMD_WRITE\fR, \fBFDCMD_READ\fR, and
\fBFDCMD_FORMAT_TRACK\fR commands are currently available.
.RE
.sp
.in +2
.nf
struct fd_cmd {
ushort_t fdc_cmd; /* command to be executed */
int fdc_flags; /* execution flags (x86 only) */
daddr_t fdc_blkno; /* disk address for command */
int fdc_secnt; /* sector count for command */
caddr_t fdc_bufaddr; /* user's buffer address */
uint_t fdc_buflen; /* size of user's buffer */
};
.fi
.in -2
.sp
.LP
Please note that the \fBfdc_buflen\fR field is currently unused. The
\fBfdc_secnt\fR field is used to calculate the transfer size, and the buffer is
assumed to be large enough to accommodate the transfer.
.sp
.in +2
.nf
{
/*
* Floppy commands
*/
#define FDCMD_WRITE 1
#define FDCMD_READ 2
#define FDCMD_SEEK 3
#define FDCMD_REZERO 4
#define FDCMD_FORMAT_UNIT 5
#define FDCMD_FORMAT_TRACK 6
};
.fi
.in -2
.sp
.ne 2
.na
\fB\fBFDRAW\fR\fR
.ad
.RS 9n
The argument is a pointer to an \fBfd_raw\fR structure (described below).
This \fBioctl\fR(\|) allows direct control of the floppy drive using the floppy
controller. Refer to the appropriate floppy-controller data sheet for full
details on required command bytes and returned result bytes. The following
commands are supported.
.RE
.sp
.in +2
.nf
/*
* Floppy raw commands
*/
#define FDRAW_SPECIFY 0x03
#define FDRAW_READID 0x0a (x86 only)
#define FDRAW_SENSE_DRV 0x04
#define FDRAW_REZERO 0x07
#define FDRAW_SEEK 0x0f
#define FDRAW_SENSE_INT 0x08 (x86 only)
#define FDRAW_FORMAT 0x0d
#define FDRAW_READTRACK 0x02
#define FDRAW_WRCMD 0x05
#define FDRAW_RDCMD 0x06
#define FDRAW_WRITEDEL 0x09
#define FDRAW_READDEL 0x0c
.fi
.in -2
.sp
.LP
Please note that when using \fBFDRAW_SEEK\fR or \fBFDRAW_REZERO,\fR the
driver automatically issues a \fBFDRAW_SENSE_INT\fR command to clear the
interrupt from the \fBFDRAW_SEEK\fR or the \fBFDRAW_REZERO.\fR The result
bytes returned by these commands are the results from the
\fBFDRAW_SENSE_INT\fR command. Please see the floppy-controller data sheet for
more details on \fBFDRAW_SENSE_INT.\fR
.sp
.in +2
.nf
/*
* Used by FDRAW
*/
struct fd_raw {
char fdr_cmd[10]; /* user-supplied command bytes */
short fdr_cnum; /* number of command bytes */
char fdr_result[10]; /* controller-supplied result bytes */
ushort_t fdr_nbytes; /* number to transfer if read/write command */
char *fdr_addr; /* where to transfer if read/write command */
};
.fi
.in -2
.SH SEE ALSO
.sp
.LP
\fBioctl\fR(2), \fBdkio\fR(7I), \fBfd\fR(7D), \fBhdio\fR(7I)
|
