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vga_jazzio.c revision 1.4 
      1 /* $NetBSD: vga_jazzio.c,v 1.4 2000/12/24 09:25:30 ur Exp $ */
      2 /* NetBSD: vga_isa.c,v 1.3 1998/06/12 18:45:48 drochner Exp  */
      3 
      4 /*
      5  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
      6  * All rights reserved.
      7  *
      8  * Author: Chris G. Demetriou
      9  *
     10  * Permission to use, copy, modify and distribute this software and
     11  * its documentation is hereby granted, provided that both the copyright
     12  * notice and this permission notice appear in all copies of the
     13  * software, derivative works or modified versions, and any portions
     14  * thereof, and that both notices appear in supporting documentation.
     15  *
     16  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     17  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     18  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     19  *
     20  * Carnegie Mellon requests users of this software to return to
     21  *
     22  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     23  *  School of Computer Science
     24  *  Carnegie Mellon University
     25  *  Pittsburgh PA 15213-3890
     26  *
     27  * any improvements or extensions that they make and grant Carnegie the
     28  * rights to redistribute these changes.
     29  */
     30 
     31 #include <sys/param.h>
     32 #include <sys/systm.h>
     33 #include <sys/kernel.h>
     34 #include <sys/device.h>
     35 #include <sys/malloc.h>
     36 
     37 #include <machine/autoconf.h>
     38 #include <machine/bus.h>
     39 
     40 #include <dev/ic/mc6845reg.h>
     41 #include <dev/ic/pcdisplayvar.h>
     42 #include <dev/ic/vgareg.h>
     43 #include <dev/ic/vgavar.h>
     44 #include <arc/jazz/jazziovar.h>
     45 #include <arc/jazz/pica.h>
     46 #include <arc/jazz/vga_jazziovar.h>
     47 
     48 #include <dev/wscons/wsconsio.h>
     49 #include <dev/wscons/wsdisplayvar.h>
     50 
     51 #define WSDISPLAY_TYPE_JAZZVGA	WSDISPLAY_TYPE_PCIVGA	/* XXX not really */
     52 
     53 struct vga_jazzio_softc {
     54 	struct device sc_dev;
     55 #if 0
     56 	struct vga_config *sc_vc;	/* VGA configuration */
     57 #endif
     58 };
     59 
     60 void	vga_jazzio_init_tag __P((bus_space_tag_t *, bus_space_tag_t *));
     61 paddr_t	vga_jazzio_mmap __P((void *, off_t, int));
     62 int	vga_jazzio_match __P((struct device *, struct cfdata *, void *));
     63 void	vga_jazzio_attach __P((struct device *, struct device *, void *));
     64 
     65 struct cfattach vga_jazzio_ca = {
     66 	sizeof(struct vga_jazzio_softc), vga_jazzio_match, vga_jazzio_attach,
     67 };
     68 
     69 void
     70 vga_jazzio_init_tag(iotp, memtp)
     71 	bus_space_tag_t *iotp, *memtp;
     72 {
     73 	static int initialized = 0;
     74 	static struct arc_bus_space vga_io, vga_mem;
     75 
     76 	if (!initialized) {
     77 		initialized = 1;
     78 		arc_bus_space_init(&vga_io, "vga_jazzio_io",
     79 		    PICA_P_LOCAL_VIDEO_CTRL, PICA_V_LOCAL_VIDEO_CTRL,
     80 		    0, PICA_S_LOCAL_VIDEO_CTRL);
     81 		arc_bus_space_init(&vga_mem, "vga_jazzio_mem",
     82 		    PICA_P_LOCAL_VIDEO, PICA_V_LOCAL_VIDEO,
     83 		    0, PICA_S_LOCAL_VIDEO);
     84 	}
     85 	*iotp = &vga_io;
     86 	*memtp = &vga_mem;
     87 }
     88 
     89 paddr_t
     90 vga_jazzio_mmap(v, offset, prot)
     91 	void *v;
     92 	off_t offset;
     93 	int prot;
     94 {
     95 	if (offset >= 0xa0000 && offset < 0xc0000)
     96 		return mips_btop(PICA_P_LOCAL_VIDEO + offset);
     97 	if (offset >= 0x0000 && offset < 0x10000)
     98 		return mips_btop(PICA_P_LOCAL_VIDEO_CTRL + offset);
     99 	if (offset >= 0x40000000 && offset < 0x40800000)
    100 		return mips_btop(PICA_P_LOCAL_VIDEO + offset - 0x40000000);
    101 	return -1;
    102 }
    103 
    104 int
    105 vga_jazzio_match(parent, match, aux)
    106 	struct device *parent;
    107 	struct cfdata *match;
    108 	void *aux;
    109 {
    110 	struct jazzio_attach_args *ja = aux;
    111 	bus_space_tag_t iot, memt;
    112 
    113 	if(strcmp(ja->ja_name, "vga") != 0)
    114 		return(0);
    115 
    116 	vga_jazzio_init_tag(&iot, &memt);
    117 	if (!vga_is_console(iot, WSDISPLAY_TYPE_JAZZVGA) &&
    118 	    !vga_common_probe(iot, memt))
    119 		return (0);
    120 
    121 	return (1);
    122 }
    123 
    124 void
    125 vga_jazzio_attach(parent, self, aux)
    126 	struct device *parent, *self;
    127 	void *aux;
    128 {
    129 #if 0
    130 	struct vga_jazzio_softc *sc = (struct vga_jazzio_softc *)self;
    131 #endif
    132 	bus_space_tag_t iot, memt;
    133 
    134 	printf("\n");
    135 
    136 	vga_jazzio_init_tag(&iot, &memt);
    137 	vga_common_attach(self, iot, memt, WSDISPLAY_TYPE_JAZZVGA,
    138 	    vga_jazzio_mmap);
    139 }
    140 
    141 int
    142 vga_jazzio_cnattach()
    143 {
    144 	bus_space_tag_t iot, memt;
    145 
    146 	vga_jazzio_init_tag(&iot, &memt);
    147 	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_JAZZVGA, 1));
    148 }
    149