NetBSD/sys/arch/macppc/dev/grf.c

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1998-05-15 14:15:45 +04:00
/* $NetBSD: grf.c,v 1.1 1998/05/15 10:15:48 tsubai Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
*
* from: Utah $Hdr: grf.c 1.31 91/01/21$
*
* @(#)grf.c 7.8 (Berkeley) 5/7/91
*/
/*
* Graphics display driver for the PowerMacintosh.
* This is the hardware-independent portion of the driver.
* Hardware access is through the grfdev routines below.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/systm.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/grfioctl.h>
#include <macppc/dev/itevar.h>
#include <macppc/dev/grfvar.h>
#include "grf.h"
#include "ite.h"
#if NITE == 0
#define iteon(u,f)
#define iteoff(u,f)
#endif
int grfmatch __P((struct device *, struct cfdata *, void *));
void grfattach __P((struct device *, struct device *, void *));
int grfbusprint();
struct cfattach grf_ca = {
sizeof(struct grf_softc), grfmatch, grfattach
};
extern struct cfdriver grf_cd;
#ifdef DEBUG
#define GRF_DEBUG
#endif
#ifdef GRF_DEBUG
#define GDB_DEVNO 0x01
#define GDB_MMAP 0x02
#define GDB_IOMAP 0x04
#define GDB_LOCK 0x08
int grfdebug = 0;
#endif
int
grfmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct grf_attach_args *ga = aux;
if (strcmp(ga->ga_name, "grf") != 0)
return 0;
return 1;
}
void
grfattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct grf_softc *sc = (struct grf_softc *)self;
struct grf_attach_args *ga = aux;
printf("\n");
/* Load forwarded pointers. */
sc->sc_display = ga->ga_display;
sc->sc_mode = ga->ga_mode;
sc->sc_flags = GF_ALIVE; /* XXX bogus */
/*
* Attach ite semantics to the grf. Change the name, forward
* everything else.
*/
ga->ga_name = "ite";
config_found(self, ga, grfbusprint);
}
/*ARGSUSED*/
int
grfopen(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
register struct grf_softc *gp;
int unit;
int error = 0;
unit = GRFUNIT(dev);
gp = grf_cd.cd_devs[unit];
if (unit >= grf_cd.cd_ndevs || (gp->sc_flags & GF_ALIVE) == 0)
return (ENXIO);
if ((gp->sc_flags & (GF_OPEN | GF_EXCLUDE)) == (GF_OPEN | GF_EXCLUDE))
return (EBUSY);
/*
* First open.
* XXX: always put in graphics mode.
*/
if ((gp->sc_flags & GF_OPEN) == 0) {
gp->sc_flags |= GF_OPEN;
/*error = grfon(dev);*/
}
return (error);
}
/*ARGSUSED*/
int
grfclose(dev, flag, mode, p)
dev_t dev;
int flag;
int mode;
struct proc *p;
{
register struct grf_softc *gp;
gp = grf_cd.cd_devs[GRFUNIT(dev)];
/*(void)grfoff(dev);*/
gp->sc_flags &= GF_ALIVE;
return (0);
}
/*ARGSUSED*/
int
grfioctl(dev, cmd, data, flag, p)
dev_t dev;
int cmd;
caddr_t data;
int flag;
struct proc *p;
{
struct grf_softc *gp;
struct grfinfo *gm;
int error;
int unit = GRFUNIT(dev);
gp = grf_cd.cd_devs[unit];
gm = gp->sc_display;
error = 0;
switch (cmd) {
case GRFIOCGINFO:
bcopy(gm, data, sizeof(struct grfinfo));
break;
case GRFIOCON:
error = grfon(dev);
break;
case GRFIOCOFF:
error = grfoff(dev);
break;
default:
error = EINVAL;
break;
}
return (error);
}
/*ARGSUSED*/
int
grfpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
return (events & (POLLOUT | POLLWRNORM));
}
/*ARGSUSED*/
int
grfmmap(dev, off, prot)
dev_t dev;
int off;
int prot;
{
struct grf_softc *gp = grf_cd.cd_devs[GRFUNIT(dev)];
struct grfinfo *gi = gp->sc_display;
if (off >= 0 && off < gi->gd_devsize)
return (int)gi->gd_devaddr + off;
return -1;
}
int
grfon(dev)
dev_t dev;
{
int unit = GRFUNIT(dev);
struct grf_softc *gp;
gp = grf_cd.cd_devs[unit];
/*
* XXX: iteoff call relies on devices being in same order
* as ITEs and the fact that iteoff only uses the minor part
* of the dev arg.
*/
iteoff(unit, 3);
return (*gp->sc_mode)(gp, GM_GRFON, NULL);
}
int
grfoff(dev)
dev_t dev;
{
int unit = GRFUNIT(dev);
struct grf_softc *gp;
int error;
gp = grf_cd.cd_devs[unit];
error = (*gp->sc_mode)(gp, GM_GRFOFF, NULL);
/* XXX: see comment for iteoff above */
iteon(unit, 2);
return (error);
}