252 lines
7.2 KiB
C
252 lines
7.2 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.
|
|
*
|
|
* @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
|
|
*
|
|
* from: Header: bwtwo.c,v 1.14 92/11/26 02:28:04 torek Exp
|
|
* $Id: bwtwo.c,v 1.5 1994/10/15 05:48:50 deraadt Exp $
|
|
*/
|
|
|
|
/*
|
|
* black&white display (bwtwo) 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/fbio.h>
|
|
#include <machine/autoconf.h>
|
|
#include <machine/pmap.h>
|
|
#include <machine/fbvar.h>
|
|
|
|
#include <sparc/dev/bwtworeg.h>
|
|
#include <sparc/dev/sbusvar.h>
|
|
|
|
/* per-display variables */
|
|
struct bwtwo_softc {
|
|
struct device sc_dev; /* base device */
|
|
struct sbusdev sc_sd; /* sbus device */
|
|
struct fbdevice sc_fb; /* frame buffer device */
|
|
volatile struct bwtworeg *sc_reg;/* control registers */
|
|
caddr_t sc_phys; /* display RAM (phys addr) */
|
|
};
|
|
|
|
/* autoconfiguration driver */
|
|
static void bwtwoattach(struct device *, struct device *, void *);
|
|
static int bwtwomatch(struct device *, struct cfdata *, void *);
|
|
struct cfdriver bwtwocd =
|
|
{ NULL, "bwtwo", matchbyname, bwtwoattach,
|
|
DV_DULL, sizeof(struct bwtwo_softc) };
|
|
|
|
/* XXX we do not handle frame buffer interrupts (do not know how) */
|
|
|
|
/* frame buffer generic driver */
|
|
static void bwtwounblank(struct device *);
|
|
static struct fbdriver bwtwofbdriver = { bwtwounblank };
|
|
|
|
extern int fbnode;
|
|
extern struct tty *fbconstty;
|
|
extern int (*v_putc)();
|
|
extern int nullop();
|
|
static int bwtwo_cnputc();
|
|
static struct bwtwo_softc *bwcons;
|
|
|
|
#define BWTWO_MAJOR 27 /* XXX */
|
|
|
|
/*
|
|
* Attach a display. We need to notice if it is the console, too.
|
|
*/
|
|
void
|
|
bwtwoattach(parent, self, args)
|
|
struct device *parent, *self;
|
|
void *args;
|
|
{
|
|
register struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
|
|
register struct confargs *ca = args;
|
|
register int node = ca->ca_ra.ra_node, ramsize;
|
|
register struct bwtwo_all *p;
|
|
int isconsole;
|
|
|
|
sc->sc_fb.fb_major = BWTWO_MAJOR; /* XXX to be removed */
|
|
|
|
sc->sc_fb.fb_driver = &bwtwofbdriver;
|
|
sc->sc_fb.fb_device = &sc->sc_dev;
|
|
/*
|
|
* The defaults below match my screen, but are not guaranteed
|
|
* to be correct as defaults go...
|
|
*/
|
|
sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2BW;
|
|
sc->sc_fb.fb_type.fb_width = getpropint(node, "width", 1152);
|
|
sc->sc_fb.fb_type.fb_height = getpropint(node, "height", 900);
|
|
sc->sc_fb.fb_linebytes = getpropint(node, "linebytes", 144);
|
|
ramsize = sc->sc_fb.fb_type.fb_height * sc->sc_fb.fb_linebytes;
|
|
sc->sc_fb.fb_type.fb_depth = 1;
|
|
sc->sc_fb.fb_type.fb_cmsize = 0;
|
|
sc->sc_fb.fb_type.fb_size = ramsize;
|
|
printf(": %s, %d x %d", getpropstring(node, "model"),
|
|
sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height);
|
|
|
|
/*
|
|
* When the ROM has mapped in a bwtwo display, the address
|
|
* maps only the video RAM, so in any case we have to map the
|
|
* registers ourselves. We only need the video RAM if we are
|
|
* going to print characters via rconsole.
|
|
*/
|
|
isconsole = node == fbnode && fbconstty != NULL;
|
|
p = (struct bwtwo_all *)ca->ca_ra.ra_paddr;
|
|
if ((sc->sc_fb.fb_pixels = ca->ca_ra.ra_vaddr) == NULL && isconsole) {
|
|
/* this probably cannot happen, but what the heck */
|
|
sc->sc_fb.fb_pixels = mapiodev(p->ba_ram, ramsize, ca->ca_bustype);
|
|
}
|
|
sc->sc_reg = (volatile struct bwtworeg *)
|
|
mapiodev((caddr_t)&p->ba_reg, sizeof(p->ba_reg), ca->ca_bustype);
|
|
sc->sc_phys = p->ba_ram;
|
|
|
|
/* Insure video is enabled */
|
|
sc->sc_reg->bw_ctl |= CTL_VE;
|
|
|
|
if (isconsole) {
|
|
printf(" (console)\n");
|
|
#ifdef RCONSOLE
|
|
rcons_init(&sc->sc_fb);
|
|
#endif
|
|
} else
|
|
printf("\n");
|
|
sbus_establish(&sc->sc_sd, &sc->sc_dev);
|
|
if (node == fbnode)
|
|
fb_attach(&sc->sc_fb);
|
|
}
|
|
|
|
int
|
|
bwtwoopen(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
int unit = minor(dev);
|
|
|
|
if (unit >= bwtwocd.cd_ndevs || bwtwocd.cd_devs[unit] == NULL)
|
|
return (ENXIO);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bwtwoclose(dev, flags, mode, p)
|
|
dev_t dev;
|
|
int flags, mode;
|
|
struct proc *p;
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
bwtwoioctl(dev, cmd, data, flags, p)
|
|
dev_t dev;
|
|
int cmd;
|
|
caddr_t data;
|
|
int flags;
|
|
struct proc *p;
|
|
{
|
|
struct bwtwo_softc *sc = bwtwocd.cd_devs[minor(dev)];
|
|
|
|
switch (cmd) {
|
|
|
|
case FBIOGTYPE:
|
|
*(struct fbtype *)data = sc->sc_fb.fb_type;
|
|
break;
|
|
|
|
case FBIOGVIDEO:
|
|
*(int *)data = (sc->sc_reg->bw_ctl & CTL_VE) != 0;
|
|
break;
|
|
|
|
case FBIOSVIDEO:
|
|
if (*(int *)data)
|
|
sc->sc_reg->bw_ctl |= CTL_VE;
|
|
else
|
|
sc->sc_reg->bw_ctl &= ~CTL_VE;
|
|
break;
|
|
|
|
default:
|
|
return (ENOTTY);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
bwtwounblank(dev)
|
|
struct device *dev;
|
|
{
|
|
struct bwtwo_softc *sc = (struct bwtwo_softc *)dev;
|
|
|
|
sc->sc_reg->bw_ctl |= CTL_VE;
|
|
}
|
|
|
|
/*
|
|
* Return the address that would map the given device at the given
|
|
* offset, allowing for the given protection, or return -1 for error.
|
|
*/
|
|
int
|
|
bwtwomap(dev, off, prot)
|
|
dev_t dev;
|
|
int off, prot;
|
|
{
|
|
register struct bwtwo_softc *sc = bwtwocd.cd_devs[minor(dev)];
|
|
|
|
if (off & PGOFSET)
|
|
panic("bwtwomap");
|
|
if ((unsigned)off >= sc->sc_fb.fb_type.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 ((int)sc->sc_phys + off + PMAP_OBIO + PMAP_NC);
|
|
}
|