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vga_jazzio.c revision 1.12 
      1 /* $NetBSD: vga_jazzio.c,v 1.12 2005/06/03 12:30:53 tsutsui 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/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: vga_jazzio.c,v 1.12 2005/06/03 12:30:53 tsutsui Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/systm.h>
     36 #include <sys/kernel.h>
     37 #include <sys/device.h>
     38 #include <sys/malloc.h>
     39 #include <uvm/uvm_extern.h>
     40 
     41 #include <machine/autoconf.h>
     42 #include <machine/bus.h>
     43 
     44 #include <mips/pte.h>
     45 
     46 #include <dev/ic/mc6845reg.h>
     47 #include <dev/ic/pcdisplayvar.h>
     48 #include <dev/ic/vgareg.h>
     49 #include <dev/ic/vgavar.h>
     50 
     51 #include <arc/arc/wired_map.h>
     52 #include <arc/jazz/jazziovar.h>
     53 #include <arc/jazz/pica.h>
     54 #include <arc/jazz/vga_jazziovar.h>
     55 
     56 #include <dev/wscons/wsconsio.h>
     57 #include <dev/wscons/wsdisplayvar.h>
     58 
     59 #define WSDISPLAY_TYPE_JAZZVGA	WSDISPLAY_TYPE_PCIVGA	/* XXX not really */
     60 
     61 int	vga_jazzio_init_tag(const char *, bus_space_tag_t *, bus_space_tag_t *);
     62 paddr_t	vga_jazzio_mmap(void *, off_t, int);
     63 int	vga_jazzio_match(struct device *, struct cfdata *, void *);
     64 void	vga_jazzio_attach(struct device *, struct device *, void *);
     65 
     66 CFATTACH_DECL(vga_jazzio, sizeof(struct vga_softc),
     67     vga_jazzio_match, vga_jazzio_attach, NULL, NULL);
     68 
     69 const struct vga_funcs vga_jazzio_funcs = {
     70 	NULL,
     71 	vga_jazzio_mmap,
     72 };
     73 
     74 int
     75 vga_jazzio_init_tag(const char *name, bus_space_tag_t *iotp,
     76     bus_space_tag_t *memtp)
     77 {
     78 	static int initialized = 0;
     79 	static struct arc_bus_space vga_io, vga_mem;
     80 
     81 	if (strcmp(name, "ALI_S3") != 0)
     82 		return ENXIO;
     83 
     84 	if (!initialized) {
     85 		initialized = 1;
     86 
     87 		arc_bus_space_init(&vga_io, "vga_jazzio_io",
     88 		    PICA_P_LOCAL_VIDEO_CTRL, PICA_V_LOCAL_VIDEO_CTRL,
     89 		    0, PICA_S_LOCAL_VIDEO_CTRL);
     90 		arc_bus_space_init(&vga_mem, "vga_jazzio_mem",
     91 		    PICA_P_LOCAL_VIDEO, PICA_V_LOCAL_VIDEO,
     92 		    0, PICA_S_LOCAL_VIDEO);
     93 
     94 		arc_enter_wired(PICA_V_LOCAL_VIDEO_CTRL,
     95 		    PICA_P_LOCAL_VIDEO_CTRL,
     96 		    PICA_P_LOCAL_VIDEO_CTRL + PICA_S_LOCAL_VIDEO_CTRL/2,
     97 		    MIPS3_PG_SIZE_1M);
     98 		arc_enter_wired(PICA_V_LOCAL_VIDEO,
     99 		    PICA_P_LOCAL_VIDEO,
    100 		    PICA_P_LOCAL_VIDEO + PICA_S_LOCAL_VIDEO/2,
    101 		    MIPS3_PG_SIZE_4M);
    102 #if 0
    103 		arc_enter_wired(PICA_V_EXTND_VIDEO_CTRL,
    104 		    PICA_P_EXTND_VIDEO_CTRL,
    105 		    PICA_P_EXTND_VIDEO_CTRL + PICA_S_EXTND_VIDEO_CTRL/2,
    106 		    MIPS3_PG_SIZE_1M);
    107 #endif
    108 	}
    109 	*iotp = &vga_io;
    110 	*memtp = &vga_mem;
    111 	return 0;
    112 }
    113 
    114 paddr_t
    115 vga_jazzio_mmap(void *v, off_t offset, int prot)
    116 {
    117 
    118 	if (offset >= 0xa0000 && offset < 0xc0000)
    119 		return mips_btop(PICA_P_LOCAL_VIDEO + offset);
    120 	if (offset >= 0x0000 && offset < 0x10000)
    121 		return mips_btop(PICA_P_LOCAL_VIDEO_CTRL + offset);
    122 	if (offset >= 0x40000000 && offset < 0x40800000)
    123 		return mips_btop(PICA_P_LOCAL_VIDEO + offset - 0x40000000);
    124 	return -1;
    125 }
    126 
    127 int
    128 vga_jazzio_match(struct device *parent, struct cfdata *match, void *aux)
    129 {
    130 	struct jazzio_attach_args *ja = aux;
    131 	bus_space_tag_t iot, memt;
    132 
    133 	if (vga_jazzio_init_tag(ja->ja_name, &iot, &memt))
    134 		return 0;
    135 
    136 	if (!vga_is_console(iot, WSDISPLAY_TYPE_JAZZVGA) &&
    137 	    !vga_common_probe(iot, memt))
    138 		return 0;
    139 
    140 	return 1;
    141 }
    142 
    143 void
    144 vga_jazzio_attach(struct device *parent, struct device *self, void *aux)
    145 {
    146 	struct vga_softc *sc = (void *)self;
    147 	struct jazzio_attach_args *ja = aux;
    148 	bus_space_tag_t iot, memt;
    149 
    150 	printf("\n");
    151 
    152 	vga_jazzio_init_tag(ja->ja_name, &iot, &memt);
    153 	vga_common_attach(sc, iot, memt, WSDISPLAY_TYPE_JAZZVGA, 0,
    154 	    &vga_jazzio_funcs);
    155 }
    156 
    157 int
    158 vga_jazzio_cnattach(char *name)
    159 {
    160 	bus_space_tag_t iot, memt;
    161 
    162 	if (vga_jazzio_init_tag(name, &iot, &memt))
    163 		return ENXIO;
    164 	return vga_cnattach(iot, memt, WSDISPLAY_TYPE_JAZZVGA, 1);
    165 }
    166