245 lines
6.5 KiB
C
245 lines
6.5 KiB
C
/* $NetBSD: grf_obio.c,v 1.31 1998/03/22 23:40:52 scottr Exp $ */
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/*
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* Copyright (c) 1995 Allen Briggs. All rights reserved.
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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 Allen Briggs.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Graphics display driver for the Macintosh internal video for machines
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* that don't map it into a fake nubus card.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/file.h>
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#include <sys/malloc.h>
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#include <sys/mman.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <machine/autoconf.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/grfioctl.h>
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#include <machine/viareg.h>
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#include <mac68k/dev/nubus.h>
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#include <mac68k/dev/obiovar.h>
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#include <mac68k/dev/grfvar.h>
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extern u_int32_t mac68k_vidlog;
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extern u_int32_t mac68k_vidphys;
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extern long videorowbytes;
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extern long videobitdepth;
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extern u_long videosize;
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static int grfiv_mode __P((struct grf_softc *gp, int cmd, void *arg));
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static caddr_t grfiv_phys __P((struct grf_softc *gp));
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static int grfiv_match __P((struct device *, struct cfdata *, void *));
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static void grfiv_attach __P((struct device *, struct device *, void *));
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struct cfattach intvid_ca = {
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sizeof(struct grfbus_softc), grfiv_match, grfiv_attach
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};
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#define QUADRA_DAFB_BASE 0xF9800000
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#define CIVIC_CONTROL_BASE 0x50036000
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#define VALKYRIE_CONTROL_BASE 0x50f2A000
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static int
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grfiv_match(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 obio_attach_args *oa = (struct obio_attach_args *)aux;
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bus_space_handle_t bsh;
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int found, sense;
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u_int base;
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found = 1;
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switch (current_mac_model->class) {
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case MACH_CLASSQ:
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/*
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* Assume DAFB for all of these, unless we can't
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* access the memory.
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*/
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base = QUADRA_DAFB_BASE;
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if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) {
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panic("failed to map space for DAFB regs.\n");
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}
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if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1C, 4) == 0) {
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bus_space_unmap(oa->oa_tag, bsh, 0x1000);
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found = 0;
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goto nodafb;
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}
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sense = (bus_space_read_4(oa->oa_tag, bsh, 0x1C) & 7);
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#if 0 /* XXX - fails on Quadras with certain 17" monitors */
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if (sense == 0)
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found = 0;
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#endif
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/* Set "Turbo SCSI" configuration to default */
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bus_space_write_4(oa->oa_tag, bsh, 0x24, 0x1d1); /* ch0 */
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bus_space_write_4(oa->oa_tag, bsh, 0x28, 0x1d1); /* ch1 */
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/* Disable interrupts */
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bus_space_write_4(oa->oa_tag, bsh, 0x104, 0);
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/* Clear any interrupts */
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bus_space_write_4(oa->oa_tag, bsh, 0x10C, 0);
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bus_space_write_4(oa->oa_tag, bsh, 0x110, 0);
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bus_space_write_4(oa->oa_tag, bsh, 0x114, 0);
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bus_space_unmap(oa->oa_tag, bsh, 0x1000);
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break;
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case MACH_CLASSAV:
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base = CIVIC_CONTROL_BASE;
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if (bus_space_map(oa->oa_tag, base, 0x1000, 0, &bsh)) {
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panic("failed to map space for CIVIC control regs.\n");
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}
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/* Disable interrupts */
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bus_space_write_1(oa->oa_tag, bsh, 0x120, 0);
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bus_space_unmap(oa->oa_tag, bsh, 0x1000);
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break;
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case MACH_CLASSQ2:
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if (current_mac_model->machineid == MACH_MACQ630) {
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base = VALKYRIE_CONTROL_BASE;
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if (bus_space_map(oa->oa_tag, base, 0x40, 0, &bsh)) {
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panic("failed to map space for Valkyrie regs.\n");
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}
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/* Disable interrupts */
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bus_space_write_1(oa->oa_tag, bsh, 0x18, 0x1);
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}
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break;
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default:
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nodafb:
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if (mac68k_vidlog == 0) {
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found = 0;
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}
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break;
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}
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return found;
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}
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#define R4(sc, o) (bus_space_read_4((sc)->sc_tag, (sc)->sc_regh, o) & 0xfff)
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static void
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grfiv_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct obio_attach_args *oa = (struct obio_attach_args *)aux;
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struct grfbus_softc *sc;
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struct grfmode *gm;
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u_int base;
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sc = (struct grfbus_softc *)self;
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sc->card_id = 0;
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switch (current_mac_model->class) {
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case MACH_CLASSQ:
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base = QUADRA_DAFB_BASE;
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sc->sc_tag = oa->oa_tag;
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if (bus_space_map(sc->sc_tag, base, 0x1000, 0, &sc->sc_regh)) {
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panic("failed to map space for DAFB regs.\n");
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}
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printf(": DAFB: Monitor sense %x.\n", R4(sc,0x1C)&7);
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bus_space_unmap(sc->sc_tag, sc->sc_regh, 0x1000);
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break;
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case MACH_CLASSQ2:
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case MACH_CLASSAV:
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default:
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printf(": Internal Video\n");
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break;
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}
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gm = &(sc->curr_mode);
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gm->mode_id = 0;
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gm->psize = videobitdepth;
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gm->ptype = 0;
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gm->width = videosize & 0xffff;
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gm->height = (videosize >> 16) & 0xffff;
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gm->rowbytes = videorowbytes;
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gm->hres = 80; /* XXX Hack */
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gm->vres = 80; /* XXX Hack */
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gm->fbsize = gm->rowbytes * gm->height;
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gm->fbbase = (caddr_t)m68k_trunc_page(mac68k_vidlog);
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gm->fboff = mac68k_vidlog & PGOFSET;
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/* Perform common video attachment. */
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grf_establish(sc, NULL, grfiv_mode, grfiv_phys);
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}
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static int
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grfiv_mode(sc, cmd, arg)
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struct grf_softc *sc;
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int cmd;
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void *arg;
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{
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switch (cmd) {
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case GM_GRFON:
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case GM_GRFOFF:
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return 0;
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case GM_CURRMODE:
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break;
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case GM_NEWMODE:
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break;
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case GM_LISTMODES:
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break;
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}
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return EINVAL;
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}
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static caddr_t
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grfiv_phys(gp)
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struct grf_softc *gp;
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{
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/*
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* If we're using IIsi or similar, this will be 0.
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* If we're using IIvx or similar, this will be correct.
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*/
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return (caddr_t)mac68k_vidphys;
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}
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