128 lines
4.3 KiB
Groff
128 lines
4.3 KiB
Groff
.\" $NetBSD: fd.4,v 1.5 1998/06/11 08:32:20 fair Exp $
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.\"
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.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Paul Kranenburg.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd June 23, 1996
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.Dt FD 4 sparc
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.Os
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.Sh NAME
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.Nm fd ,
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.Nm fdc
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.Nd SPARCstation i82072 or i82077 floppy disk controller driver
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.Sh SYNOPSIS
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.Cd "fdc0 at mainbus0" Pq sun4c
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.Cd "fdc0 at obio0" Pq sun4m
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.Cd "fd* at fdc0"
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.Sh DESCRIPTION
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This is the driver for the built-in floppy disk drive run by the
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.Tn Intel
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i82072 or i82077 controller chip found on the SPARCstation desktop
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systems, and other
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.Tn SPARC
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systems.
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.Pp
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Bits
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.Bq 0-3
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of the minor device number of the special files referring to this
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device encode the floppy density as follows:
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.Bl -tag -width indent -offset indent
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.It 0
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3.5'' 1.44MB floppy diskettes.
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.It 1
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3.5'' 720KB floppy diskettes.
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.It 2
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3.5'' 360KB floppy diskettes.
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.It 3
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3.5'' 1.2MB/NEC Japanese format floppy diskettes.
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.El
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.Sh FORMATTING
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The driver supports floppy disk formatting using the interfaces in
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.Pa Aq sys/fdio.h :
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.Pp
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.Bl -tag -width FDIOCFORMAT_TRACK -compact
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.It Dv FDIOCGETFORMAT Fa struct fdformat_parms
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Fetch current formatting parameters.
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This gets the default parameters
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for the open device if no parameters have been set during the session.
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.Pp
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.It Dv FDIOCSETFORMAT Fa struct fdformat_parms
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Set formatting parameters.
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The driver saves this state and it persists while the device is open.
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.Pp
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.It Dv FDIOCFORMAT_TRACK Fa struct fdformat_cmd
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Format a track on the medium.
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If this call returns
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.Er EINVAL ,
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the track formatting parameters were out of range for the medium.
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If it returns
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.Er EIO ,
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there was a medium error while formatting the track.
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.Pp
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.It Dv FDIOCSETOPTS Fa int
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Set driver options which persist until the device is closed.
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The
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options should be the logical OR of the desired values below:
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.Pp
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.Bl -tag -width FDOPT_NORETRY -compact
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.It Dv FDOPT_NORETRY
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Do not retry operations on failure
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.It Dv FDOPT_SILENT
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Do not print error messages to the console
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.El
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.Pp
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.It Dv FDIOCGETOPTS Fa int
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Fetch drive options.
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.El
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.Pp
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A typical use of the formatting facilities would be to open the device,
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call
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.Dv FDIOCGETFORMAT
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to fetch the current format parameters, perhaps
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change a parameter or two, display the formatting details to the user,
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and then call
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.Dv FDIOCSETFORMAT
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followed by a series of calls to
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.Dv FDIOCFORMAT_TRACK .
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.Sh SEE ALSO
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.Xr eject 1 ,
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.Xr fdformat 1 .
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.Sh BUGS
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Formatting appears to not work reliably on all machines.
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.Sh HISTORY
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The
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.Nm
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formatting support appeared in
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.Nx 1.3 .
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