125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This software was developed by the Computer Systems Engineering group
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
* contributed to Berkeley.
|
|
*
|
|
* All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Lawrence Berkeley Laboratory.
|
|
*
|
|
* 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
|
|
*
|
|
* @(#)fb.c 8.1 (Berkeley) 6/11/93
|
|
*
|
|
* from: Header: fb.c,v 1.7 92/11/26 01:12:48 torek Exp
|
|
* $Id: fb.c,v 1.2 1993/10/11 02:36:40 deraadt Exp $
|
|
*/
|
|
|
|
/*
|
|
* /dev/fb (indirect frame buffer driver). This is gross; we should
|
|
* just build cdevsw[] dynamically.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <machine/fbio.h>
|
|
#include <machine/fbvar.h>
|
|
|
|
static struct fbdevice *devfb;
|
|
|
|
void
|
|
fb_unblank()
|
|
{
|
|
|
|
if (devfb)
|
|
(*devfb->fb_driver->fbd_unblank)(devfb->fb_device);
|
|
}
|
|
|
|
void
|
|
fb_attach(fb)
|
|
struct fbdevice *fb;
|
|
{
|
|
|
|
if (devfb) panic("multiple /dev/fb declarers");
|
|
devfb = fb;
|
|
}
|
|
|
|
int
|
|
fbopen(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
|
|
if (devfb == NULL)
|
|
return (ENXIO);
|
|
return (cdevsw[devfb->fb_major].d_open(dev, flags, mode, p));
|
|
}
|
|
|
|
int
|
|
fbclose(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (cdevsw[devfb->fb_major].d_close(dev, flags, mode, p));
|
|
}
|
|
|
|
int
|
|
fbioctl(dev, cmd, data, flags, p)
|
|
dev_t dev;
|
|
int cmd;
|
|
caddr_t data;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (cdevsw[devfb->fb_major].d_ioctl(dev, cmd, data, flags, p));
|
|
}
|
|
|
|
int
|
|
fbmap(dev, off, prot)
|
|
dev_t dev;
|
|
int off, prot;
|
|
{
|
|
int (*map)() = cdevsw[devfb->fb_major].d_mmap;
|
|
|
|
if (map == NULL)
|
|
return (-1);
|
|
return (map(dev, off, prot));
|
|
}
|