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vga_isa.c revision 1.5 
      1 /* $NetBSD: vga_isa.c,v 1.5 2001/09/14 01:10:12 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/systm.h>
     32 #include <sys/kernel.h>
     33 #include <sys/device.h>
     34 #include <sys/malloc.h>
     35 
     36 #include <dev/isa/isavar.h>
     37 
     38 #include <dev/ic/mc6845reg.h>
     39 #include <dev/ic/pcdisplayvar.h>
     40 #include <dev/ic/vgareg.h>
     41 #include <dev/ic/vgavar.h>
     42 #include <dev/isa/vga_isavar.h>
     43 
     44 #include <dev/wscons/wsconsio.h>
     45 #include <dev/wscons/wsdisplayvar.h>
     46 
     47 int	vga_isa_match __P((struct device *, struct cfdata *, void *));
     48 void	vga_isa_attach __P((struct device *, struct device *, void *));
     49 
     50 struct cfattach vga_isa_ca = {
     51 	sizeof(struct vga_softc), vga_isa_match, vga_isa_attach,
     52 };
     53 
     54 int
     55 vga_isa_match(parent, match, aux)
     56 	struct device *parent;
     57 	struct cfdata *match;
     58 	void *aux;
     59 {
     60 	struct isa_attach_args *ia = aux;
     61 
     62 	/* If values are hardwired to something that they can't be, punt. */
     63 	if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != 0x3b0) ||
     64 	    /* ia->ia_iosize != 0 || XXX isa.c */
     65 	    (ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xa0000) ||
     66 	    (ia->ia_msize != 0 && ia->ia_msize != 0x20000) ||
     67 	    ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
     68 		return (0);
     69 
     70 	if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
     71 	    !vga_common_probe(ia->ia_iot, ia->ia_memt))
     72 		return (0);
     73 
     74 	ia->ia_iobase = 0x3b0;	/* XXX mono 0x3b0 color 0x3c0 */
     75 	ia->ia_iosize = 0x30;	/* XXX 0x20 */
     76 	ia->ia_maddr = 0xa0000;
     77 	ia->ia_msize = 0x20000;
     78 	return (2);	/* more than generic pcdisplay */
     79 }
     80 
     81 void
     82 vga_isa_attach(parent, self, aux)
     83 	struct device *parent, *self;
     84 	void *aux;
     85 {
     86 	struct vga_softc *sc = (void *) self;
     87 	struct isa_attach_args *ia = aux;
     88 
     89 	printf("\n");
     90 
     91 	vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA,
     92 	    NULL);
     93 }
     94 
     95 int
     96 vga_isa_cnattach(iot, memt)
     97 	bus_space_tag_t iot, memt;
     98 {
     99 	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
    100 }
    101