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vga_jazzio.c revision 1.6 
      1 /* $NetBSD: vga_jazzio.c,v 1.6 2001/09/14 01:10:12 thorpej 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 #include <uvm/uvm_extern.h>
     37 
     38 #include <machine/autoconf.h>
     39 #include <machine/bus.h>
     40 
     41 #include <mips/pte.h>
     42 
     43 #include <dev/ic/mc6845reg.h>
     44 #include <dev/ic/pcdisplayvar.h>
     45 #include <dev/ic/vgareg.h>
     46 #include <dev/ic/vgavar.h>
     47 
     48 #include <arc/arc/wired_map.h>
     49 #include <arc/jazz/jazziovar.h>
     50 #include <arc/jazz/pica.h>
     51 #include <arc/jazz/vga_jazziovar.h>
     52 
     53 #include <dev/wscons/wsconsio.h>
     54 #include <dev/wscons/wsdisplayvar.h>
     55 
     56 #define WSDISPLAY_TYPE_JAZZVGA	WSDISPLAY_TYPE_PCIVGA	/* XXX not really */
     57 
     58 int	vga_jazzio_init_tag __P((char*, bus_space_tag_t *, bus_space_tag_t *));
     59 paddr_t	vga_jazzio_mmap __P((void *, off_t, int));
     60 int	vga_jazzio_match __P((struct device *, struct cfdata *, void *));
     61 void	vga_jazzio_attach __P((struct device *, struct device *, void *));
     62 
     63 struct cfattach vga_jazzio_ca = {
     64 	sizeof(struct vga_softc), vga_jazzio_match, vga_jazzio_attach,
     65 };
     66 
     67 const struct vga_funcs vga_jazzio_funcs = {
     68 	NULL,
     69 	vga_jazzio_mmap,
     70 };
     71 
     72 int
     73 vga_jazzio_init_tag(name, iotp, memtp)
     74 	char *name;
     75 	bus_space_tag_t *iotp, *memtp;
     76 {
     77 	static int initialized = 0;
     78 	static struct arc_bus_space vga_io, vga_mem;
     79 
     80 	if (strcmp(name, "ALI_S3") != 0)
     81 		return(ENXIO);
     82 
     83 	if (!initialized) {
     84 		initialized = 1;
     85 
     86 		arc_bus_space_init(&vga_io, "vga_jazzio_io",
     87 		    PICA_P_LOCAL_VIDEO_CTRL, PICA_V_LOCAL_VIDEO_CTRL,
     88 		    0, PICA_S_LOCAL_VIDEO_CTRL);
     89 		arc_bus_space_init(&vga_mem, "vga_jazzio_mem",
     90 		    PICA_P_LOCAL_VIDEO, PICA_V_LOCAL_VIDEO,
     91 		    0, PICA_S_LOCAL_VIDEO);
     92 
     93 		arc_enter_wired(PICA_V_LOCAL_VIDEO_CTRL,
     94 		    PICA_P_LOCAL_VIDEO_CTRL,
     95 		    PICA_P_LOCAL_VIDEO_CTRL + PICA_S_LOCAL_VIDEO_CTRL/2,
     96 		    MIPS3_PG_SIZE_1M);
     97 		arc_enter_wired(PICA_V_LOCAL_VIDEO,
     98 		    PICA_P_LOCAL_VIDEO,
     99 		    PICA_P_LOCAL_VIDEO + PICA_S_LOCAL_VIDEO/2,
    100 		    MIPS3_PG_SIZE_4M);
    101 #if 0
    102 		arc_enter_wired(PICA_V_EXTND_VIDEO_CTRL,
    103 		    PICA_P_EXTND_VIDEO_CTRL,
    104 		    PICA_P_EXTND_VIDEO_CTRL + PICA_S_EXTND_VIDEO_CTRL/2,
    105 		    MIPS3_PG_SIZE_1M);
    106 #endif
    107 	}
    108 	*iotp = &vga_io;
    109 	*memtp = &vga_mem;
    110 	return (0);
    111 }
    112 
    113 paddr_t
    114 vga_jazzio_mmap(v, offset, prot)
    115 	void *v;
    116 	off_t offset;
    117 	int prot;
    118 {
    119 	if (offset >= 0xa0000 && offset < 0xc0000)
    120 		return mips_btop(PICA_P_LOCAL_VIDEO + offset);
    121 	if (offset >= 0x0000 && offset < 0x10000)
    122 		return mips_btop(PICA_P_LOCAL_VIDEO_CTRL + offset);
    123 	if (offset >= 0x40000000 && offset < 0x40800000)
    124 		return mips_btop(PICA_P_LOCAL_VIDEO + offset - 0x40000000);
    125 	return -1;
    126 }
    127 
    128 int
    129 vga_jazzio_match(parent, match, aux)
    130 	struct device *parent;
    131 	struct cfdata *match;
    132 	void *aux;
    133 {
    134 	struct jazzio_attach_args *ja = aux;
    135 	bus_space_tag_t iot, memt;
    136 
    137 	if (vga_jazzio_init_tag(ja->ja_name, &iot, &memt))
    138 		return (0);
    139 
    140 	if (!vga_is_console(iot, WSDISPLAY_TYPE_JAZZVGA) &&
    141 	    !vga_common_probe(iot, memt))
    142 		return (0);
    143 
    144 	return (1);
    145 }
    146 
    147 void
    148 vga_jazzio_attach(parent, self, aux)
    149 	struct device *parent, *self;
    150 	void *aux;
    151 {
    152 	struct vga_softc *sc = (void *) self;
    153 	struct jazzio_attach_args *ja = aux;
    154 	bus_space_tag_t iot, memt;
    155 
    156 	printf("\n");
    157 
    158 	vga_jazzio_init_tag(ja->ja_name, &iot, &memt);
    159 	vga_common_attach(sc, iot, memt, WSDISPLAY_TYPE_JAZZVGA,
    160 	    &vga_jazzio_funcs);
    161 }
    162 
    163 int
    164 vga_jazzio_cnattach(name)
    165 	char *name;
    166 {
    167 	bus_space_tag_t iot, memt;
    168 
    169 	if (vga_jazzio_init_tag(name, &iot, &memt))
    170 		return (ENXIO);
    171 	return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_JAZZVGA, 1));
    172 }
    173