make kernel includes standard

[unix-history] / usr / src / sys / sparc / dev / fb.c

/*
* Copyright (c) 1992 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 Laboratories.
*
* %sccs.include.redist.c%
*
*      @(#)fb.c        7.3 (Berkeley) %G%
*
* from: $Header: fb.c,v 1.6 92/06/17 05:35:46 torek 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 <sys/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));
}