NetBSD/sys/dev/sun/bwtwo.c

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/* $NetBSD: bwtwo.c,v 1.14 2005/12/11 12:23:56 christos Exp $ */
/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* 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. 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 (bwtwo) driver.
*
* Does not handle interrupts, even though they can occur.
*
* P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.org>.
* Overlay plane handling hints and ideas provided by Brad Spencer.
*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bwtwo.c,v 1.14 2005/12/11 12:23:56 christos Exp $");
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#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <machine/autoconf.h>
#include <machine/eeprom.h>
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#include <dev/sun/fbio.h>
#include <dev/sun/fbvar.h>
#include <dev/sun/btreg.h>
#include <dev/sun/bwtworeg.h>
#include <dev/sun/bwtwovar.h>
#include <dev/sun/pfourreg.h>
extern struct cfdriver bwtwo_cd;
dev_type_open(bwtwoopen);
dev_type_ioctl(bwtwoioctl);
dev_type_mmap(bwtwommap);
const struct cdevsw bwtwo_cdevsw = {
bwtwoopen, nullclose, noread, nowrite, bwtwoioctl,
nostop, notty, nopoll, bwtwommap, nokqfilter,
};
/* XXX we do not handle frame buffer interrupts (do not know how) */
static void bwtwounblank(struct device *);
/* frame buffer generic driver */
static struct fbdriver bwtwofbdriver = {
bwtwounblank, bwtwoopen, nullclose, bwtwoioctl, nopoll, bwtwommap,
nokqfilter
};
int
bwtwo_pfour_probe(vaddr, arg)
void *vaddr;
void *arg;
{
struct cfdata *cf = arg;
switch (fb_pfour_id(vaddr)) {
case PFOUR_ID_BW:
case PFOUR_ID_COLOR8P1: /* bwtwo in ... */
case PFOUR_ID_COLOR24: /* ...overlay plane */
/* This is wrong; should be done in bwtwo_attach() */
cf->cf_flags |= FB_PFOUR;
/* FALLTHROUGH */
case PFOUR_NOTPFOUR:
return (1);
}
return (0);
}
void
bwtwoattach(sc, name, isconsole)
struct bwtwo_softc *sc;
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const char *name;
int isconsole;
{
struct fbdevice *fb = &sc->sc_fb;
/* Fill in the remaining fbdevice values */
fb->fb_driver = &bwtwofbdriver;
fb->fb_device = &sc->sc_dev;
fb->fb_type.fb_type = FBTYPE_SUN2BW;
fb->fb_type.fb_cmsize = 0;
fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes;
printf(": %s, %d x %d", name,
fb->fb_type.fb_width, fb->fb_type.fb_height);
/* Insure video is enabled */
sc->sc_set_video(sc, 1);
if (isconsole) {
printf(" (console)\n");
#ifdef RASTERCONSOLE
/*
* XXX rcons doesn't seem to work properly on the overlay
* XXX plane. This is a temporary kludge until someone
* XXX fixes it.
*/
if ((fb->fb_flags & FB_PFOUR) == 0 ||
(sc->sc_ovtype == BWO_NONE))
fbrcons_init(fb);
#endif
} else
printf("\n");
if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE)) {
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const char *ovnam;
switch (sc->sc_ovtype) {
case BWO_CGFOUR:
ovnam = "cgfour";
break;
case BWO_CGEIGHT:
ovnam = "cgeight";
break;
default:
ovnam = "unknown";
break;
}
printf("%s: %s overlay plane\n", sc->sc_dev.dv_xname, ovnam);
}
/*
* If we're on an overlay plane of a color framebuffer,
* then we don't force the issue in fb_attach() because
* we'd like the color framebuffer to actually be the
* "console framebuffer". We're only around to speed
* up rconsole.
*/
if ((fb->fb_flags & FB_PFOUR) && (sc->sc_ovtype != BWO_NONE ))
fb_attach(fb, 0);
else
fb_attach(fb, isconsole);
}
int
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bwtwoopen(dev, flags, mode, l)
dev_t dev;
int flags, mode;
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struct lwp *l;
{
int unit = minor(dev);
if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL)
return (ENXIO);
return (0);
}
int
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bwtwoioctl(dev, cmd, data, flags, l)
dev_t dev;
u_long cmd;
caddr_t data;
int flags;
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struct lwp *l;
{
struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
switch (cmd) {
case FBIOGTYPE:
*(struct fbtype *)data = sc->sc_fb.fb_type;
break;
case FBIOGVIDEO:
*(int *)data = sc->sc_get_video(sc);
break;
case FBIOSVIDEO:
sc->sc_set_video(sc, (*(int *)data));
break;
default:
return (ENOTTY);
}
return (0);
}
static void
bwtwounblank(dev)
struct device *dev;
{
struct bwtwo_softc *sc = (struct bwtwo_softc *)dev;
sc->sc_set_video(sc, 1);
}
/*
* Return the address that would map the given device at the given
* offset, allowing for the given protection, or return -1 for error.
*/
paddr_t
bwtwommap(dev, off, prot)
dev_t dev;
off_t off;
int prot;
{
struct bwtwo_softc *sc = bwtwo_cd.cd_devs[minor(dev)];
if (off & PGOFSET)
panic("bwtwommap");
if (off >= sc->sc_fb.fb_type.fb_size)
return (-1);
return (bus_space_mmap(sc->sc_bustag,
sc->sc_paddr, sc->sc_pixeloffset + off,
prot, BUS_SPACE_MAP_LINEAR));
}