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/* $NetBSD: bw2.c,v 1.6 1996/03/17 02:03:41 thorpej Exp $ */
/*
* 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.
*
* @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
*/
/*
* black&white display (bw2) driver.
*
* Does not handle interrupts, even though they can occur.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <vm/vm.h>
#include <machine/cpu.h>
#include <machine/fbio.h>
#include <machine/autoconf.h>
#include <machine/pmap.h>
#include <machine/control.h>
#include "fbvar.h"
#include "bw2reg.h"
extern unsigned char cpu_machine_id;
/* per-display variables */
struct bw2_softc {
struct device sc_dev; /* base device */
struct fbdevice sc_fb; /* frame buffer device */
int sc_phys; /* display RAM (phys addr) */
};
/* autoconfiguration driver */
static void bw2attach __P((struct device *, struct device *, void *));
static int bw2match __P((struct device *, void *, void *));
struct cfattach bwtwo_ca = {
sizeof(struct bw2_softc), bw2match, bw2attach
};
struct cfdriver bwtwo_cd = {
NULL, "bwtwo", DV_DULL
};
/* XXX we do not handle frame buffer interrupts */
/* frame buffer generic driver */
int bw2open(), bw2close(), bw2ioctl(), bw2mmap();
static int bw2gvideo __P((struct fbdevice *, int *));
static int bw2svideo __P((struct fbdevice *, int *));
static struct fbdriver bw2fbdriver = {
bw2open, bw2close, bw2mmap,
enoioctl, /* gattr */
bw2gvideo, bw2svideo,
enoioctl, enoioctl };
static int
bw2match(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct cfdata *cf = vcf;
struct confargs *ca = args;
int x;
#if 0 /* XXX - Assume only one is in use anyway... */
/*
* This driver only supports one unit because the
* system enable register is used for blanking.
*/
if (cf->cf_unit != 0)
return (0);
#endif
if (ca->ca_paddr == -1) {
if (cpu_machine_id == SUN3_MACH_50)
ca->ca_paddr = BW2_50_PADDR;
else
ca->ca_paddr = BW2_FB_PADDR;
}
/* The peek returns -1 on bus error. */
x = bus_peek(ca->ca_bustype, ca->ca_paddr, 1);
return (x != -1);
}
/*
* Attach a display. We need to notice if it is the console, too.
*/
static void
bw2attach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct bw2_softc *sc = (struct bw2_softc *)self;
struct fbdevice *fb = &sc->sc_fb;
struct confargs *ca = args;
struct fbtype *fbt;
int ramsize;
sc->sc_phys = ca->ca_paddr;
fb->fb_driver = &bw2fbdriver;
fb->fb_private = sc;
fb->fb_name = sc->sc_dev.dv_xname;
fbt = &fb->fb_fbtype;
fbt->fb_type = FBTYPE_SUN2BW;
fbt->fb_depth = 1;
fbt->fb_cmsize = 0;
fbt->fb_width = 1152;
fbt->fb_height = 900;
fbt->fb_size = BW2_FBSIZE;
/*
* Only the model 60 can have hi-res.
* XXX - Use PROM screen size values?
*/
if (cpu_machine_id == SUN3_MACH_60) {
int tmp;
tmp = bus_peek(BUS_OBMEM, BW2_CR_PADDR, 1);
if ((tmp != -1) && (tmp & 0x80) == 0) {
fbt->fb_width = 1600;
fbt->fb_height = 1280;
fbt->fb_size = BW2_FBSIZE_HIRES;
}
}
printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height);
fb_attach(fb, 1);
}
int
bw2open(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
int unit = minor(dev);
if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
bw2close(dev, flags, mode, p)
dev_t dev;
int flags, mode;
struct proc *p;
{
return (0);
}
int
bw2ioctl(dev, cmd, data, flags, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
struct proc *p;
{
struct bw2_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
return (fbioctlfb(&sc->sc_fb, cmd, data));
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*/
int
bw2mmap(dev, off, prot)
dev_t dev;
int off, prot;
{
struct bw2_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
if (off & PGOFSET)
return (-1);
if ((unsigned)off >= sc->sc_fb.fb_fbtype.fb_size)
return (-1);
/*
* I turned on PMAP_NC here to disable the cache as I was
* getting horribly broken behaviour with it on.
*/
return ((sc->sc_phys + off) | PMAP_NC);
}
/* FBIOGVIDEO: */
static int bw2gvideo(fb, on)
struct fbdevice *fb;
int *on;
{
int s, ena;
s = splhigh();
ena = get_control_byte((char *)SYSTEM_ENAB);
splx(s);
*on = (ena & SYSTEM_ENAB_VIDEO) ? 1 : 0;
return (0);
}
/* FBIOSVIDEO */
static int bw2svideo(fb, on)
struct fbdevice *fb;
int *on;
{
int s, ena;
s = splhigh();
ena = get_control_byte((char *)SYSTEM_ENAB);
if (*on) ena |= SYSTEM_ENAB_VIDEO;
else ena &= ~SYSTEM_ENAB_VIDEO;
set_control_byte((char *)SYSTEM_ENAB, ena);
splx(s);
return(0);
}
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