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grf_obio.c revision 1.3 
      1 /*	$NetBSD: grf_obio.c,v 1.3 1995/07/02 00:30:30 briggs Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Allen Briggs.  All rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Allen Briggs.
     17  * 4. The name of the author may not be used to endorse or promote products
     18  *    derived from this software without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 /*
     32  * Graphics display driver for the Macintosh internal video for machines
     33  * that don't map it into a fake nubus card.
     34  */
     35 
     36 #include <sys/param.h>
     37 
     38 #include <sys/device.h>
     39 #include <sys/ioctl.h>
     40 #include <sys/file.h>
     41 #include <sys/malloc.h>
     42 #include <sys/mman.h>
     43 #include <sys/proc.h>
     44 
     45 #include <machine/grfioctl.h>
     46 #include <machine/cpu.h>
     47 
     48 #include "nubus.h"
     49 #include "grfvar.h"
     50 
     51 extern int	grfiv_probe __P((struct grf_softc *sc, nubus_slot *ignore));
     52 extern int	grfiv_init __P((struct grf_softc *sc));
     53 extern int	grfiv_mode __P((struct grf_softc *sc, int cmd, void *arg));
     54 
     55 extern int
     56 grfiv_probe(sc, slotinfo)
     57 	struct grf_softc *sc;
     58 	nubus_slot *slotinfo;
     59 {
     60 	extern unsigned long	int_video_start;
     61 
     62 	if (int_video_start == 0) {
     63 		return 0;
     64 	}
     65 	if (slotinfo->slot < 0xe) {
     66 		if (NUBUS_SLOT_TO_BASE(slotinfo->slot) > int_video_start)
     67 			return 0;
     68 		if (NUBUS_SLOT_TO_BASE(slotinfo->slot + 1) <= int_video_start)
     69 			return 0;
     70 	}
     71 	return 1;
     72 }
     73 
     74 extern int
     75 grfiv_init(sc)
     76 	struct	grf_softc *sc;
     77 {
     78 	struct grfmode *gm;
     79 	int i, j;
     80 
     81 	sc->card_id = 0;
     82 
     83 	strcpy(sc->card_name, "Internal video");
     84 
     85 	gm = &(sc->curr_mode);
     86 	gm->mode_id = 0;
     87 	gm->psize = 1;
     88 	gm->ptype = 0;
     89 	gm->width = 640;	/* XXX */
     90 	gm->height = 480;	/* XXX */
     91 	gm->rowbytes = 80;	/* XXX Hack */
     92 	gm->hres = 80;		/* XXX Hack */
     93 	gm->vres = 80;		/* XXX Hack */
     94 	gm->fbsize = gm->width * gm->height;
     95 	gm->fbbase = (caddr_t) 0;
     96 	gm->fboff = 0;
     97 
     98 	return 1;
     99 }
    100 
    101 extern int
    102 grfiv_mode(sc, cmd, arg)
    103 	struct grf_softc *sc;
    104 	int cmd;
    105 	void *arg;
    106 {
    107 	return 0;
    108 }
    109