198 lines
6.2 KiB
Groff
198 lines
6.2 KiB
Groff
.\" $NetBSD: wsmouse.9,v 1.3 2002/02/13 08:18:58 ross Exp $
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.\"
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.\" Copyright (c) 2001 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 Gregory McGarry.
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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 October 7, 2001
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.Dt WSMOUSE 9
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.Os
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.Sh NAME
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.Nm wsmouse ,
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.Nm wsmouse_input ,
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.Nm wsmousedevprint
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.Nd wscons mouse support
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.Sh SYNOPSIS
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.Fd #include \*[Lt]dev/wscons/wsconsio.h\*[Gt]
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.Fd #include \*[Lt]dev/wscons/wsmousevar.h\*[Gt]
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.Ft void
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.Fn wsmouse_input "struct device *msdev" "u_int btns" \
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"int x" "int y" "int z" "u_int flags"
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.Ft int
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.Fn wsmousedevprint "void *aux" "const char *pnp"
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.Sh DESCRIPTION
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The
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.Nm
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module is a component of the
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.Xr wscons 9
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framework to provide machine-indpendent mouse support. Most of the
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support is provided by the
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.Xr wsmouse 4
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device driver, which must be a child of the hardware device driver.
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.Sh DATA TYPES
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Mouse drivers providing support for wscons pointer devices will make use
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of the following data types:
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.Bl -tag -width compact
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.It Fa struct wsmouse_accessops
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A structure used to specify the mouse access functions. All pointer
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devices must provide this structure and pass it to the
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.Xr wsmouse 4
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child device. It has the following members:
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.Bd -literal
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int (*enable)(void *);
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int (*ioctl)(void *v, u_long cmd, caddr_t data,
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int flag, struct proc *p);
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void (*disable)(void *);
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.Ed
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.Pp
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The
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.Fa enable
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member defines the function to be called to enable monitoring pointer
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movements and passing these events to
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wscons. The
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.Fa disable
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member defines the function to disable movement events.
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The
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.Fa ioctl
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member defines the function to be called to perform mouse-specific
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ioctl calls.
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.Pp
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There is a
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.Fa void *
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cookie provided by the mouse driver associated with these functions,
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which is passed to them when they are invoked.
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.It Fa struct wsmouse_attach_args
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A structure used to attach the
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.Xr wsmouse 4
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child device. It has the following members:
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.Bd -literal
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const struct wsmouse_accessops *accessops;
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void *accesscookie;
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.Ed
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.El
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.Sh FUNCTIONS
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.Bl -tag -width compact
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.It Fn wsmouse_input "msdev" "btns" "x" "y" "z" "flags"
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Callback from the mouse driver to the wsmouse interface driver.
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The argument
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.Fa btns
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specifies the current button configuration. The pointer coordinate is
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specified by the
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.Fa x ,
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.Fa y ,
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.Fa z
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tuple. The
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.Fa flags
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argument specify whether the pointer device and the measurement is in
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relative or absolute mode. Valid values for
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.Fa flags
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are:
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.Bl -tag -width compact
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.It WSMOUSE_INPUT_DELTA
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Relative mode.
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.It WSMOUSE_INPUT_ABSOLUTE_X
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Obsolute mode in x-direction.
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.It WSMOUSE_INPUT_ABSOLUTE_Y
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Obsolute mode in y-direction.
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.It WSMOUSE_INPUT_ABSOLUTE_Z
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Obsolute mode in z-direction.
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.El
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.It Fn wsmousedevprint "aux" "pnp"
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The default wsmouse printing routine used by
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.Fn config_found .
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(see
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.Xr autoconf 9 ) .
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.El
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.Sh AUTOCONFIGURATION
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Mouse drivers which want to utilise the wsmouse module must be a
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parent to the
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.Xr wsmouse 4
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device and provide an attachment interface. To attach the
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.Xr wsmouse 4
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device, the mouse driver must allocate and populate a
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.Fa wsmouse_attach_args
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structure with the supported operations and callbacks and call
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.Fn config_found
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to perform the attach (see
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.Xr autoconf 9 ) .
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.Sh OPERATION
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When a mouse-movement event is received, the device driver must
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perform any necessary movement decoding to wscons events and pass the
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events to wscons via
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.Fn wsmouse_input .
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.Pp
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The wscons framework calls back into the hardware driver by invoking
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the functions that are specified in the
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.Em accessops
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structure. The
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.Fn enable
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and
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.Fn disable
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functions are relatively simple and self-explanatory. The
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.Fn ioctl
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function is called by the wscons interface to perform
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mouse-specific ioctl operations (see
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.Xr ioctl 2 ) .
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The argument
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.Fa cmd
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to the
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.Fn ioctl
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function specifies the specific command to perform using the data
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.Fa data .
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Valid commands are listed in
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.Pa sys/dev/wscons/wsconsio.h .
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.Sh CODE REFERENCES
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This section describes places within the
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.Nx
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source tree where actual code implementing or utilising the
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machine-independent wscons subsystem can be found. All pathnames are
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relative to
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.Pa /usr/src .
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.Pp
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The wscons subsystem is implemented within the directory
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.Pa sys/dev/wscons .
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The
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.Nm
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module itself is implement within the file
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.Pa sys/dev/wscons/wsmouse.c .
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.Xr ioctl 2
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operations are listed in
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.Pa sys/dev/wscons/wsconsio.h .
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.Sh SEE ALSO
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.Xr ioctl 2 ,
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.Xr autoconf 9 ,
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.Xr driver 9 ,
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.Xr intro 9 ,
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.Xr wsdisplay 9 ,
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.Xr wskbd 9
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