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vga_isa.c revision 1.1 
      1 /* $NetBSD: vga_isa.c,v 1.1 1998/03/22 15:14:35 drochner 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/vgareg.h>
     39 #include <dev/ic/vgavar.h>
     40 #include <dev/isa/vga_isavar.h>
     41 
     42 #include <dev/wscons/wsconsio.h>
     43 #include <dev/wscons/wsdisplayvar.h>
     44 
     45 struct vga_isa_softc {
     46 	struct device sc_dev;
     47 #if 0
     48 	struct vga_config *sc_vc;	/* VGA configuration */
     49 #endif
     50 };
     51 
     52 #ifdef __BROKEN_INDIRECT_CONFIG
     53 int	vga_isa_match __P((struct device *, void *, void *));
     54 #else
     55 int	vga_isa_match __P((struct device *, struct cfdata *, void *));
     56 #endif
     57 void	vga_isa_attach __P((struct device *, struct device *, void *));
     58 
     59 struct cfattach vga_isa_ca = {
     60 	sizeof(struct vga_isa_softc), vga_isa_match, vga_isa_attach,
     61 };
     62 
     63 int
     64 vga_isa_match(parent, match, aux)
     65 	struct device *parent;
     66 #ifdef __BROKEN_INDIRECT_CONFIG
     67 	void *match;
     68 #else
     69 	struct cfdata *match;
     70 #endif
     71 	void *aux;
     72 {
     73 	struct isa_attach_args *ia = aux;
     74 	int rv;
     75 
     76 	/* If values are hardwired to something that they can't be, punt. */
     77 	if (ia->ia_iobase != IOBASEUNK || /* ia->ia_iosize != 0 || XXX isa.c */
     78 	    (ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xb8000) ||
     79 	    (ia->ia_msize != 0 && ia->ia_msize != 0x8000) ||
     80 	    ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
     81 		return (0);
     82 
     83 	if (vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA))
     84 		rv = 1;
     85 	else
     86 		rv = vga_common_probe(ia->ia_iot, ia->ia_memt);
     87 
     88 	if (rv) {
     89 		ia->ia_iobase = 0x3b0;
     90 		ia->ia_iosize = 0x30;
     91 		ia->ia_maddr = 0xb8000;
     92 		ia->ia_msize = 0x8000;
     93 	}
     94 	return (rv);
     95 }
     96 
     97 void
     98 vga_isa_attach(parent, self, aux)
     99 	struct device *parent, *self;
    100 	void *aux;
    101 {
    102 	struct isa_attach_args *ia = aux;
    103 #if 0
    104 	struct vga_isa_softc *sc = (struct vga_isa_softc *)self;
    105 #endif
    106 
    107 	printf("\n");
    108 
    109 	vga_common_attach(self, ia->ia_iot, ia->ia_memt,
    110 			  WSDISPLAY_TYPE_ISAVGA);
    111 }
    112 
    113 int
    114 vga_isa_cnattach(iot, memt)
    115 	bus_space_tag_t iot, memt;
    116 {
    117 	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
    118 }
    119