299 lines
9.1 KiB
C
299 lines
9.1 KiB
C
/* $NetBSD: bwtwo_obio.c,v 1.1 1999/08/10 04:56:30 christos Exp $ */
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/*-
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* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)bwtwo.c 8.1 (Berkeley) 6/11/93
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*/
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/*
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* black&white display (bwtwo) driver.
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*
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* Does not handle interrupts, even though they can occur.
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*
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* P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.ORG>.
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* Overlay plane handling hints and ideas provided by Brad Spencer.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/tty.h>
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#include <sys/conf.h>
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#include <vm/vm.h>
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#include <machine/fbio.h>
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#include <machine/autoconf.h>
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#include <machine/pmap.h>
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#include <machine/fbvar.h>
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#include <machine/eeprom.h>
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#include <machine/ctlreg.h>
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#include <machine/conf.h>
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#include <sparc/sparc/asm.h>
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#include <sparc/dev/btreg.h>
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#include <sparc/dev/bwtworeg.h>
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#include <sparc/dev/bwtwovar.h>
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#include <sparc/dev/pfourreg.h>
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/* autoconfiguration driver */
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static void bwtwoattach_obio __P((struct device *, struct device *, void *));
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static int bwtwomatch_obio __P((struct device *, struct cfdata *, void *));
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struct cfattach bwtwo_obio_ca = {
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sizeof(struct bwtwo_softc), bwtwomatch_obio, bwtwoattach_obio
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};
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static int bwtwo_get_video_sun4 __P((struct bwtwo_softc *));
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static void bwtwo_set_video_sun4 __P((struct bwtwo_softc *, int));
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extern int fbnode;
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extern struct tty *fbconstty;
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static int
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bwtwomatch_obio(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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union obio_attach_args *uoba = aux;
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struct obio4_attach_args *oba;
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if (uoba->uoba_isobio4 == 0)
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return (0);
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oba = &uoba->uoba_oba4;
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return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr,
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4, /* probe size */
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0, /* offset */
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0, /* flags */
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bwtwo_pfour_probe, cf));
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}
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static void
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bwtwoattach_obio(parent, self, uax)
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struct device *parent, *self;
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void *uax;
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{
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struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
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union obio_attach_args *uoba = uax;
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struct obio4_attach_args *oba;
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struct fbdevice *fb = &sc->sc_fb;
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struct eeprom *eep = (struct eeprom *)eeprom_va;
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bus_space_handle_t bh;
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int constype, isconsole;
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char *name;
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oba = &uoba->uoba_oba4;
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/* Remember cookies for bwtwo_mmap() */
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sc->sc_bustag = oba->oba_bustag;
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sc->sc_btype = (bus_type_t)0;
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sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
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fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags;
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fb->fb_type.fb_depth = 1;
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fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
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constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW;
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if (eep == NULL || eep->eeConsole == constype)
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isconsole = (fbconstty != NULL);
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else
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isconsole = 0;
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if (fb->fb_flags & FB_PFOUR) {
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/*
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* Map the pfour control register.
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* Set pixel offset to appropriate overlay plane.
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*/
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name = "bwtwo/p4";
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if (obio_bus_map(oba->oba_bustag,
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oba->oba_paddr,
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0,
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sizeof(u_int32_t),
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BUS_SPACE_MAP_LINEAR,
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0, &bh) != 0) {
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printf("%s: cannot map pfour register\n",
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self->dv_xname);
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return;
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}
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fb->fb_pfour = (u_int32_t *)bh;
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sc->sc_reg = NULL;
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/*
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* Notice if this is an overlay plane on a color
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* framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY
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* is the same as PFOUR_BW_OFF, but we use the
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* different names anyway.
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*/
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switch (PFOUR_ID(*fb->fb_pfour)) {
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case PFOUR_ID_COLOR8P1:
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sc->sc_ovtype = BWO_CGFOUR;
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sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
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break;
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case PFOUR_ID_COLOR24:
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sc->sc_ovtype = BWO_CGEIGHT;
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sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
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break;
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default:
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sc->sc_ovtype = BWO_NONE;
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sc->sc_pixeloffset = PFOUR_BW_OFF;
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break;
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}
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} else {
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/* A plain bwtwo */
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if (obio_bus_map(oba->oba_bustag,
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oba->oba_paddr,
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BWREG_REG,
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sizeof(struct fbcontrol),
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BUS_SPACE_MAP_LINEAR,
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0, &bh) != 0) {
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printf("%s: cannot map control registers\n",
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self->dv_xname);
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return;
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}
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sc->sc_reg = (struct fbcontrol *)bh;
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fb->fb_pfour = NULL;
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name = "bwtwo";
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sc->sc_pixeloffset = BWREG_MEM;
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}
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sc->sc_get_video = bwtwo_get_video_sun4;
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sc->sc_set_video = bwtwo_set_video_sun4;
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if (isconsole) {
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int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
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if (obio_bus_map(oba->oba_bustag, oba->oba_paddr,
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sc->sc_pixeloffset,
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ramsize,
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BUS_SPACE_MAP_LINEAR,
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0, &bh) != 0) {
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printf("%s: cannot map pixels\n", self->dv_xname);
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return;
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}
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sc->sc_fb.fb_pixels = (char *)bh;
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}
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bwtwoattach(sc, name, isconsole, 1);
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}
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static void
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bwtwo_set_video_sun4(sc, enable)
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struct bwtwo_softc *sc;
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int enable;
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{
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if (sc->sc_fb.fb_flags & FB_PFOUR) {
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/*
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* This handles the overlay plane case, too.
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*/
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fb_pfour_set_video(&sc->sc_fb, enable);
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return;
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}
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if (enable)
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stba(AC_SYSENABLE, ASI_CONTROL,
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lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
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else
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stba(AC_SYSENABLE, ASI_CONTROL,
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lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
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return;
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}
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static int
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bwtwo_get_video_sun4(sc)
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struct bwtwo_softc *sc;
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{
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if (sc->sc_fb.fb_flags & FB_PFOUR) {
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/*
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* This handles the overlay plane case, too.
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*/
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return (fb_pfour_get_video(&sc->sc_fb));
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} else
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return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0);
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}
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