239 lines
8.1 KiB
C
239 lines
8.1 KiB
C
/* $NetBSD: bwtwo_sbus.c,v 1.19 2007/03/04 06:02:40 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. 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: bwtwo_sbus.c,v 1.19 2007/03/04 06:02:40 christos Exp $");
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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 <machine/autoconf.h>
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#include <machine/eeprom.h>
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#include <dev/sbus/sbusvar.h>
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#include <dev/sun/fbio.h>
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#include <dev/sun/fbvar.h>
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#include <dev/sun/btreg.h>
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#include <dev/sun/bwtworeg.h>
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#include <dev/sun/bwtwovar.h>
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#include <dev/sun/pfourreg.h>
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/* autoconfiguration driver */
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static void bwtwoattach_sbus (struct device *, struct device *, void *);
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static int bwtwomatch_sbus (struct device *, struct cfdata *, void *);
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/* Allocate an `sbusdev' in addition to the bwtwo softc */
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struct bwtwo_sbus_softc {
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struct bwtwo_softc bss_softc;
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struct sbusdev bss_sd;
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};
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CFATTACH_DECL(bwtwo_sbus, sizeof(struct bwtwo_sbus_softc),
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bwtwomatch_sbus, bwtwoattach_sbus, NULL, NULL);
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static int bwtwo_get_video (struct bwtwo_softc *);
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static void bwtwo_set_video (struct bwtwo_softc *, int);
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/*
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* Match a bwtwo.
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*/
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static int
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bwtwomatch_sbus(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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struct sbus_attach_args *sa = aux;
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return (strcmp(cf->cf_name, sa->sa_name) == 0);
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}
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/*
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* Attach a display. We need to notice if it is the console, too.
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*/
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void
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bwtwoattach_sbus(parent, self, args)
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struct device *parent, *self;
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void *args;
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{
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struct bwtwo_softc *sc = (struct bwtwo_softc *)self;
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struct sbusdev *sd = &((struct bwtwo_sbus_softc *)self)->bss_sd;
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struct sbus_attach_args *sa = args;
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struct fbdevice *fb = &sc->sc_fb;
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bus_space_handle_t bh;
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int isconsole, node;
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const char *name;
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node = sa->sa_node;
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/* Remember cookies for bwtwo_mmap() */
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset);
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fb->fb_flags = device_cfdata(&sc->sc_dev)->cf_flags;
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fb->fb_type.fb_depth = 1;
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fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node);
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/*
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* When the ROM has mapped in a bwtwo display, the address
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* maps only the video RAM, hence we always map the control
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* registers ourselves. We only need the video RAM if we are
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* going to print characters via rconsole.
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*/
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if (sbus_bus_map(sa->sa_bustag,
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sa->sa_slot,
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sa->sa_offset + BWREG_REG,
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sizeof(struct fbcontrol),
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BUS_SPACE_MAP_LINEAR, &bh) != 0) {
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printf("%s: cannot map control registers\n", self->dv_xname);
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return;
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}
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sc->sc_reg = (struct fbcontrol *)bus_space_vaddr(sa->sa_bustag, bh);
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fb->fb_pfour = NULL;
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sc->sc_pixeloffset = BWREG_MEM;
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isconsole = fb_is_console(node);
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name = prom_getpropstring(node, "model");
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/* Assume `bwtwo at sbus' only happens at sun4c's */
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sc->sc_get_video = bwtwo_get_video;
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sc->sc_set_video = bwtwo_set_video;
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if (sa->sa_npromvaddrs != 0)
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sc->sc_fb.fb_pixels = (void *)(u_long)sa->sa_promvaddrs[0];
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if (isconsole && sc->sc_fb.fb_pixels == NULL) {
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int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
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if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
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sa->sa_offset + sc->sc_pixeloffset,
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ramsize,
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BUS_SPACE_MAP_LINEAR, &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 *)bus_space_vaddr(sa->sa_bustag, bh);
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}
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sbus_establish(sd, &sc->sc_dev);
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bwtwoattach(sc, name, isconsole);
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}
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static void
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bwtwo_set_video(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 (enable)
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/*
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* If the we're the console the PROM will have taken care
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* of the FBC_TIMING bit and video control parameters. We
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* simply turn on FBC_TIMING; in case other video parameters
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* are necessary, here is a set read from an ELC:
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* [0xbb,0x2b,0x4,0x14,0xae,0x3,0xa8,0x24,0x1,0x5,0xff,0x1]
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*/
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sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING;
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else
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sc->sc_reg->fbc_ctrl &= ~FBC_VENAB;
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}
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static int
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bwtwo_get_video(sc)
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struct bwtwo_softc *sc;
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{
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return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0);
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}
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