371 lines
9.1 KiB
C
371 lines
9.1 KiB
C
/* $NetBSD: bw2.c,v 1.36 2014/07/25 08:10:35 dholland 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. 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: bw2.c,v 1.36 2014/07/25 08:10:35 dholland Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/tty.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <machine/autoconf.h>
|
|
#include <machine/cpu.h>
|
|
#include <dev/sun/fbio.h>
|
|
#include <machine/idprom.h>
|
|
#include <machine/pmap.h>
|
|
|
|
#include <sun3/dev/fbvar.h>
|
|
#include <sun3/dev/bw2reg.h>
|
|
#include <sun3/dev/p4reg.h>
|
|
|
|
#include "ioconf.h"
|
|
|
|
/* per-display variables */
|
|
struct bw2_softc {
|
|
device_t sc_dev; /* base device */
|
|
struct fbdevice sc_fb; /* frame buffer device */
|
|
int sc_phys; /* display RAM (phys addr) */
|
|
/* If using overlay plane of something, it is... */
|
|
int sc_ovtype; /* ... this type. */
|
|
int sc_video_on;
|
|
};
|
|
|
|
/* autoconfiguration driver */
|
|
static int bw2match(device_t, cfdata_t, void *);
|
|
static void bw2attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(bwtwo, sizeof(struct bw2_softc),
|
|
bw2match, bw2attach, NULL, NULL);
|
|
|
|
dev_type_open(bw2open);
|
|
dev_type_ioctl(bw2ioctl);
|
|
dev_type_mmap(bw2mmap);
|
|
|
|
const struct cdevsw bwtwo_cdevsw = {
|
|
.d_open = bw2open,
|
|
.d_close = nullclose,
|
|
.d_read = noread,
|
|
.d_write = nowrite,
|
|
.d_ioctl = bw2ioctl,
|
|
.d_stop = nostop,
|
|
.d_tty = notty,
|
|
.d_poll = nopoll,
|
|
.d_mmap = bw2mmap,
|
|
.d_kqfilter = nokqfilter,
|
|
.d_discard = nodiscard,
|
|
.d_flag = 0
|
|
};
|
|
|
|
/* XXX we do not handle frame buffer interrupts */
|
|
|
|
static int bw2gvideo(struct fbdevice *, void *);
|
|
static int bw2svideo(struct fbdevice *, void *);
|
|
|
|
static struct fbdriver bw2fbdriver = {
|
|
bw2open, nullclose, bw2mmap, nokqfilter,
|
|
fb_noioctl,
|
|
bw2gvideo, bw2svideo,
|
|
fb_noioctl, fb_noioctl, };
|
|
|
|
static int
|
|
bw2match(device_t parent, cfdata_t cf, void *args)
|
|
{
|
|
struct confargs *ca = args;
|
|
int mid, p4id, peekval;
|
|
void *p4reg;
|
|
|
|
/* No default address support. */
|
|
if (ca->ca_paddr == -1)
|
|
return 0;
|
|
|
|
/*
|
|
* Slight hack here: The low four bits of the
|
|
* config flags, if set, restrict the match to
|
|
* that machine "implementation" only.
|
|
*/
|
|
mid = cf->cf_flags & IDM_IMPL_MASK;
|
|
if (mid != 0 && (mid != (cpu_machine_id & IDM_IMPL_MASK)))
|
|
return 0;
|
|
|
|
/*
|
|
* Make sure something is there, and if so,
|
|
* see if it looks like a P4 register.
|
|
*/
|
|
p4reg = bus_tmapin(ca->ca_bustype, ca->ca_paddr);
|
|
peekval = peek_long(p4reg);
|
|
p4id = (peekval == -1) ? P4_NOTFOUND : fb_pfour_id(p4reg);
|
|
bus_tmapout(p4reg);
|
|
if (peekval == -1)
|
|
return 0;
|
|
|
|
/*
|
|
* The config flag 0x40 if set means we should match
|
|
* only on a CG? overlay plane. We can use only the
|
|
* CG4 and CG8, which both have a P4 register.
|
|
*/
|
|
if (cf->cf_flags & 0x40) {
|
|
switch (p4id) {
|
|
case P4_ID_COLOR8P1:
|
|
case P4_ID_COLOR24:
|
|
return 1;
|
|
case P4_NOTFOUND:
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* OK, we are expecting a plain old BW2, and
|
|
* there may or may not be a P4 register.
|
|
*/
|
|
switch (p4id) {
|
|
case P4_ID_BW:
|
|
case P4_NOTFOUND:
|
|
return 1;
|
|
default:
|
|
#ifdef DEBUG
|
|
aprint_debug("bwtwo at 0x%lx match p4id=0x%x fails\n",
|
|
ca->ca_paddr, p4id & 0xFF);
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Attach a display. We need to notice if it is the console, too.
|
|
*/
|
|
static void
|
|
bw2attach(device_t parent, device_t self, void *args)
|
|
{
|
|
struct bw2_softc *sc = device_private(self);
|
|
struct fbdevice *fb = &sc->sc_fb;
|
|
struct confargs *ca = args;
|
|
struct fbtype *fbt;
|
|
void *p4reg;
|
|
int p4id, tmp;
|
|
int pixeloffset; /* offset to framebuffer */
|
|
|
|
sc->sc_dev = self;
|
|
|
|
fbt = &fb->fb_fbtype;
|
|
fbt->fb_type = FBTYPE_SUN2BW;
|
|
fbt->fb_width = 1152; /* default - see below */
|
|
fbt->fb_height = 900; /* default - see below */
|
|
fbt->fb_depth = 1;
|
|
fbt->fb_cmsize = 0;
|
|
fbt->fb_size = BW2_FBSIZE; /* default - see below */
|
|
fb->fb_driver = &bw2fbdriver;
|
|
fb->fb_private = sc;
|
|
fb->fb_name = device_xname(self);
|
|
fb->fb_flags = device_cfdata(self)->cf_flags;
|
|
|
|
/* Set up default pixel offset. May be changed below. */
|
|
pixeloffset = 0;
|
|
|
|
/* Does it have a P4 register? */
|
|
p4reg = bus_mapin(ca->ca_bustype, ca->ca_paddr, 4);
|
|
p4id = fb_pfour_id(p4reg);
|
|
if (p4id != P4_NOTFOUND)
|
|
fb->fb_pfour = p4reg;
|
|
else
|
|
bus_mapout(p4reg, 4);
|
|
|
|
switch (p4id) {
|
|
case P4_NOTFOUND:
|
|
pixeloffset = 0;
|
|
break;
|
|
|
|
case P4_ID_BW:
|
|
pixeloffset = P4_BW_OFF;
|
|
break;
|
|
|
|
default:
|
|
aprint_error("%s: bad p4id=0x%x\n", fb->fb_name, p4id);
|
|
/* Must be some kinda color... */
|
|
/* FALLTHROUGH */
|
|
case P4_ID_COLOR8P1:
|
|
case P4_ID_COLOR24:
|
|
sc->sc_ovtype = p4id;
|
|
pixeloffset = P4_COLOR_OFF_OVERLAY;
|
|
break;
|
|
}
|
|
sc->sc_phys = ca->ca_paddr + pixeloffset;
|
|
|
|
/*
|
|
* Determine width and height as follows:
|
|
* If it has a P4 register, use that;
|
|
* else if unit==0, use the EEPROM size,
|
|
* else make our best guess.
|
|
*/
|
|
if (fb->fb_pfour)
|
|
fb_pfour_setsize(fb);
|
|
/* XXX device_unit() abuse */
|
|
else if (device_unit(self) == 0)
|
|
fb_eeprom_setsize(fb);
|
|
else {
|
|
/* Guess based on machine ID. */
|
|
switch (cpu_machine_id) {
|
|
#ifdef _SUN3_
|
|
case ID_SUN3_60:
|
|
/*
|
|
* Only the model 60 can have hi-res.
|
|
* Look at the "resolution" jumper.
|
|
*/
|
|
tmp = bus_peek(BUS_OBMEM, BW2_CR_PADDR, 1);
|
|
if ((tmp != -1) && (tmp & 0x80) == 0)
|
|
goto high_res;
|
|
break;
|
|
|
|
case ID_SUN3_260:
|
|
/* The Sun3/260 is ALWAYS high-resolution! */
|
|
/* fall through */
|
|
high_res:
|
|
fbt->fb_width = 1600;
|
|
fbt->fb_height = 1280;
|
|
fbt->fb_size = BW2_FBSIZE_HIRES;
|
|
break;
|
|
#endif /* SUN3 */
|
|
|
|
default:
|
|
/* Leave the defaults set above. */
|
|
break;
|
|
}
|
|
}
|
|
aprint_normal(" (%dx%d)\n", fbt->fb_width, fbt->fb_height);
|
|
|
|
/* Make sure video is on. */
|
|
tmp = 1;
|
|
bw2svideo(fb, &tmp);
|
|
|
|
/* Let /dev/fb know we are here. */
|
|
fb_attach(fb, 1);
|
|
}
|
|
|
|
int
|
|
bw2open(dev_t dev, int flags, int mode, struct lwp *l)
|
|
{
|
|
struct bw2_softc *sc;
|
|
int unit = minor(dev);
|
|
|
|
sc = device_lookup_private(&bwtwo_cd, unit);
|
|
if (sc == NULL)
|
|
return ENXIO;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
bw2ioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l)
|
|
{
|
|
struct bw2_softc *sc = device_lookup_private(&bwtwo_cd, 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.
|
|
*/
|
|
paddr_t
|
|
bw2mmap(dev_t dev, off_t off, int prot)
|
|
{
|
|
struct bw2_softc *sc = device_lookup_private(&bwtwo_cd, minor(dev));
|
|
int size = sc->sc_fb.fb_fbtype.fb_size;
|
|
|
|
if (off & PGOFSET)
|
|
panic("%s: bad offset", __func__);
|
|
|
|
if ((off < 0) || (off >= size))
|
|
return -1;
|
|
|
|
/*
|
|
* I turned on PMAP_NC here to disable the cache as I was
|
|
* getting horribly broken behaviour without it.
|
|
*/
|
|
return (sc->sc_phys + off) | PMAP_NC;
|
|
}
|
|
|
|
/* FBIOGVIDEO: */
|
|
static int
|
|
bw2gvideo(struct fbdevice *fb, void *data)
|
|
{
|
|
struct bw2_softc *sc = fb->fb_private;
|
|
int *on = data;
|
|
|
|
*on = sc->sc_video_on;
|
|
return 0;
|
|
}
|
|
|
|
/* FBIOSVIDEO: */
|
|
static int
|
|
bw2svideo(struct fbdevice *fb, void *data)
|
|
{
|
|
struct bw2_softc *sc = fb->fb_private;
|
|
int *on = data;
|
|
|
|
if (sc->sc_video_on == *on)
|
|
return 0;
|
|
sc->sc_video_on = *on;
|
|
|
|
if (fb->fb_pfour)
|
|
fb_pfour_set_video(fb, sc->sc_video_on);
|
|
else
|
|
enable_video(sc->sc_video_on);
|
|
|
|
return 0;
|
|
}
|