/* $NetBSD: bwtwo_obio.c,v 1.18 2023/12/20 05:33:18 thorpej 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.
*
* 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 <
[email protected]>.
* Overlay plane handling hints and ideas provided by Brad Spencer.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bwtwo_obio.c,v 1.18 2023/12/20 05:33:18 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <machine/autoconf.h>
#include <machine/eeprom.h>
#include <machine/ctlreg.h>
#include <sparc/sparc/asm.h>
#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>
/* autoconfiguration driver */
static int bwtwomatch_obio(device_t, cfdata_t, void *);
static void bwtwoattach_obio(device_t, device_t, void *);
CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwo_softc),
bwtwomatch_obio, bwtwoattach_obio, NULL, NULL);
static int bwtwo_get_video_sun4(struct bwtwo_softc *);
static void bwtwo_set_video_sun4(struct bwtwo_softc *, int);
extern int fbnode;
static int
bwtwomatch_obio(device_t parent, cfdata_t cf, void *aux)
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
if (uoba->uoba_isobio4 == 0)
return (0);
oba = &uoba->uoba_oba4;
return (bus_space_probe(oba->oba_bustag, oba->oba_paddr,
4, /* probe size */
0, /* offset */
0, /* flags */
bwtwo_pfour_probe, cf));
}
static void
bwtwoattach_obio(device_t parent, device_t self, void *aux)
{
struct bwtwo_softc *sc = device_private(self);
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
struct fbdevice *fb = &sc->sc_fb;
struct eeprom *eep = (struct eeprom *)eeprom_va;
bus_space_handle_t bh;
int constype, isconsole;
const char *name;
sc->sc_dev = self;
oba = &uoba->uoba_oba4;
/* Remember cookies for bwtwo_mmap() */
sc->sc_bustag = oba->oba_bustag;
sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
fb->fb_flags = device_cfdata(self)->cf_flags;
fb->fb_type.fb_depth = 1;
fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW;
if (eep == NULL || eep->eeConsole == constype)
isconsole = fb_is_console(0);
else
isconsole = 0;
if (fb->fb_flags & FB_PFOUR) {
/*
* Map the pfour control register.
* Set pixel offset to appropriate overlay plane.
*/
name = "bwtwo/p4";
if (bus_space_map(oba->oba_bustag,
oba->oba_paddr,
sizeof(uint32_t),
BUS_SPACE_MAP_LINEAR,
&bh) != 0) {
printf("%s: cannot map pfour register\n",
device_xname(self));
return;
}
fb->fb_pfour = (uint32_t *)bh;
sc->sc_reg = NULL;
/*
* Notice if this is an overlay plane on a color
* framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY
* is the same as PFOUR_BW_OFF, but we use the
* different names anyway.
*/
switch (PFOUR_ID(*fb->fb_pfour)) {
case PFOUR_ID_COLOR8P1:
sc->sc_ovtype = BWO_CGFOUR;
sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
break;
case PFOUR_ID_COLOR24:
sc->sc_ovtype = BWO_CGEIGHT;
sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
break;
default:
sc->sc_ovtype = BWO_NONE;
sc->sc_pixeloffset = PFOUR_BW_OFF;
break;
}
} else {
/* A plain bwtwo */
if (bus_space_map(oba->oba_bustag,
oba->oba_paddr + BWREG_REG,
sizeof(struct fbcontrol),
BUS_SPACE_MAP_LINEAR,
&bh) != 0) {
printf("%s: cannot map control registers\n",
device_xname(self));
return;
}
sc->sc_reg = (struct fbcontrol *)bh;
fb->fb_pfour = NULL;
name = "bwtwo";
sc->sc_pixeloffset = BWREG_MEM;
}
sc->sc_get_video = bwtwo_get_video_sun4;
sc->sc_set_video = bwtwo_set_video_sun4;
if (isconsole) {
int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
if (bus_space_map(oba->oba_bustag,
oba->oba_paddr + sc->sc_pixeloffset,
ramsize,
BUS_SPACE_MAP_LINEAR,
&bh) != 0) {
printf("%s: cannot map pixels\n", device_xname(self));
return;
}
sc->sc_fb.fb_pixels = (char *)bh;
}
bwtwoattach(sc, name, isconsole);
}
static void
bwtwo_set_video_sun4(struct bwtwo_softc *sc, int enable)
{
if (sc->sc_fb.fb_flags & FB_PFOUR) {
/*
* This handles the overlay plane case, too.
*/
fb_pfour_set_video(&sc->sc_fb, enable);
return;
}
if (enable)
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
else
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
return;
}
static int
bwtwo_get_video_sun4(struct bwtwo_softc *sc)
{
if (sc->sc_fb.fb_flags & FB_PFOUR) {
/*
* This handles the overlay plane case, too.
*/
return (fb_pfour_get_video(&sc->sc_fb));
} else
return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0);
}
