144 lines
3.8 KiB
C
144 lines
3.8 KiB
C
/* $NetBSD: grf_obio.c,v 1.10 1995/08/11 17:48:19 briggs 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 <machine/grfioctl.h>
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#include <machine/cpu.h>
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#include "nubus.h"
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#include "grfvar.h"
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extern int grfiv_probe __P((struct grf_softc *sc, nubus_slot *ignore));
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extern int grfiv_init __P((struct grf_softc *sc));
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extern int grfiv_mode __P((struct grf_softc *sc, int cmd, void *arg));
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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 unsigned long videosize;
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extern int
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grfiv_probe(sc, slotinfo)
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struct grf_softc *sc;
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nubus_slot *slotinfo;
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{
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static int internal_video_found = 0;
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if (internal_video_found || (mac68k_vidlog == 0)) {
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return 0;
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}
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if ( (NUBUS_SLOT_TO_BASE(slotinfo->slot) <= mac68k_vidlog)
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&& (mac68k_vidlog < NUBUS_SLOT_TO_BASE(slotinfo->slot + 1))) {
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internal_video_found++;
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return 1;
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}
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if (slotinfo->slot == NUBUS_INT_VIDEO_PSUEDO_SLOT) {
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internal_video_found++;
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return 1;
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}
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return 0;
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}
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extern int
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grfiv_init(sc)
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struct grf_softc *sc;
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{
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struct grfmode *gm;
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int i, j;
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sc->card_id = 0;
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strcpy(sc->card_name, "Internal video");
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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) mac68k_vidlog;
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gm->fboff = 0;
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return 1;
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}
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extern 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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extern caddr_t
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grfiv_phys(gp, addr)
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struct grf_softc *gp;
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vm_offset_t addr;
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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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