NetBSD/sys/dev/wscons/wscons_glue.c

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/* $NetBSD: wscons_glue.c,v 1.5 1999/01/18 20:03:59 drochner Exp $ */
/*
* Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
static const char _copyright[] __attribute__ ((unused)) =
"Copyright (c) 1996, 1997 Christopher G. Demetriou. All rights reserved.";
static const char _rcsid[] __attribute__ ((unused)) =
"$NetBSD: wscons_glue.c,v 1.5 1999/01/18 20:03:59 drochner Exp $";
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/wscons/wsksymvar.h>
#include <dev/wscons/wscons_callbacks.h>
#include "wskbd.h"
#include "wsdisplay.h"
#if NWSKBD > 0 && NWSDISPLAY > 0
extern struct cfdriver wsdisplay_cd, wskbd_cd;
#endif
int wscons_setup_glue_callback_set;
static void wscons_setup_glue __P((void *v));
void
wscons_glue_set_callback()
{
if (!wscons_setup_glue_callback_set) {
/* doesn't really hurt to run it twice, though... */
timeout(wscons_setup_glue, NULL, 0);
wscons_setup_glue_callback_set = 1;
}
}
static void
wscons_setup_glue(v)
void *v;
{
#if NWSKBD > 0 && NWSDISPLAY > 0
int i, kbddev, displaydev;
struct device *kbddevice, *displaydevice;
wscons_setup_glue_callback_set = 0;
/*
* Two passes:
*
* First:
* Find the console keyboard and display devices,
* glue them together if they're not already attached.
*/
kbddev = displaydev = -1;
for (i = 0; i < wskbd_cd.cd_ndevs; i++)
if (wskbd_cd.cd_devs[i] != NULL &&
wskbd_is_console(wskbd_cd.cd_devs[i])) {
kbddev = i;
break;
}
for (i = 0; i < wsdisplay_cd.cd_ndevs; i++)
if (wsdisplay_cd.cd_devs[i] != NULL &&
wsdisplay_is_console(wsdisplay_cd.cd_devs[i])) {
displaydev = i;
break;
}
if (kbddev != -1 && (wskbd_cd.cd_devs[kbddev] != NULL) &&
wskbd_display(wskbd_cd.cd_devs[kbddev]) == NULL &&
displaydev != -1 && (wsdisplay_cd.cd_devs[displaydev] != NULL) &&
wsdisplay_kbd(wsdisplay_cd.cd_devs[displaydev]) == NULL) {
kbddevice = wskbd_cd.cd_devs[kbddev];
displaydevice = wsdisplay_cd.cd_devs[displaydev];
wskbd_set_display(kbddevice, displaydevice);
wsdisplay_set_kbd(displaydevice, kbddevice);
printf("wscons: %s glued to %s (console)\n",
kbddevice->dv_xname, displaydevice->dv_xname);
}
/*
* Second:
*
* Attach remaining unattached keyboard and display
* devices, in order by unit number.
*/
i = 0;
for (kbddev = 0; kbddev < wskbd_cd.cd_ndevs; kbddev++) {
if (wskbd_cd.cd_devs[kbddev] == NULL ||
wskbd_display(wskbd_cd.cd_devs[kbddev]) != NULL)
continue;
displaydev = -1;
for (; i < wsdisplay_cd.cd_ndevs; i++) {
if (wsdisplay_cd.cd_devs[i] == NULL ||
wsdisplay_kbd(wsdisplay_cd.cd_devs[i]) != NULL)
continue;
displaydev = i;
break;
}
if (displaydev == -1)
continue;
kbddevice = wskbd_cd.cd_devs[kbddev];
displaydevice = wsdisplay_cd.cd_devs[displaydev];
KASSERT(kbddevice != NULL);
KASSERT(wskbd_display(kbddevice) == NULL);
KASSERT(displaydevice != NULL);
KASSERT(wsdisplay_kbd(displaydevice) == NULL);
wskbd_set_display(kbddevice, displaydevice);
wsdisplay_set_kbd(displaydevice, kbddevice);
printf("wscons: %s glued to %s\n", kbddevice->dv_xname,
displaydevice->dv_xname);
}
/* Now wasn't that simple? */
#endif /* NWSKBD > 0 && NWSDISPLAY > 0 */
}