sys/arch/arc/jazz/vga_jazzio.c

   1 /* $NetBSD: vga_jazzio.c,v 1.14 2005/12/11 12:16:39 christos 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@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 1.14 2005/12/11 12:16:39 christos 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 #include <machine/wired_map.h>
  44
  45 #include <mips/pte.h>
  46
  47 #include <dev/ic/mc6845reg.h>
  48 #include <dev/ic/pcdisplayvar.h>
  49 #include <dev/ic/vgareg.h>
  50 #include <dev/ic/vgavar.h>
  51
  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(device_t, cfdata_t, void *);
  64 void    vga_jazzio_attach(device_t, device_t, void *);
  65
  66 CFATTACH_DECL_NEW(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_wired_enter_page(PICA_V_LOCAL_VIDEO_CTRL,
  95                     PICA_P_LOCAL_VIDEO_CTRL,
  96                     PICA_S_LOCAL_VIDEO_CTRL / 2);
  97                 arc_wired_enter_page(
  98                     PICA_V_LOCAL_VIDEO_CTRL + PICA_S_LOCAL_VIDEO_CTRL/2,
  99                     PICA_P_LOCAL_VIDEO_CTRL + PICA_S_LOCAL_VIDEO_CTRL/2,
 100                     PICA_S_LOCAL_VIDEO_CTRL / 2);
 101
 102                 arc_wired_enter_page(PICA_V_LOCAL_VIDEO,
 103                     PICA_P_LOCAL_VIDEO,
 104                     PICA_S_LOCAL_VIDEO / 2);
 105                 arc_wired_enter_page(
 106                     PICA_V_LOCAL_VIDEO + PICA_S_LOCAL_VIDEO / 2,
 107                     PICA_P_LOCAL_VIDEO + PICA_S_LOCAL_VIDEO / 2,
 108                     PICA_S_LOCAL_VIDEO / 2);
 109 #if 0
 110                 arc_wired_enter_page(PICA_V_EXTND_VIDEO_CTRL,
 111                     PICA_P_EXTND_VIDEO_CTRL,
 112                     PICA_S_EXTND_VIDEO_CTRL / 2);
 113                 arc_wired_enter_page(
 114                     PICA_V_EXTND_VIDEO_CTRL + PICA_S_EXTND_VIDEO_CTRL / 2,
 115                     PICA_P_EXTND_VIDEO_CTRL + PICA_S_EXTND_VIDEO_CTRL / 2,
 116                     PICA_S_EXTND_VIDEO_CTRL / 2);
 117 #endif
 118         }
 119         *iotp = &vga_io;
 120         *memtp = &vga_mem;
 121         return 0;
 122 }
 123
 124 paddr_t
 125 vga_jazzio_mmap(void *v, off_t offset, int prot)
 126 {
 127
 128         if (offset >= 0xa0000 && offset < 0xc0000)
 129                 return mips_btop(PICA_P_LOCAL_VIDEO + offset);
 130         if (offset >= 0x0000 && offset < 0x10000)
 131                 return mips_btop(PICA_P_LOCAL_VIDEO_CTRL + offset);
 132         if (offset >= 0x40000000 && offset < 0x40800000)
 133                 return mips_btop(PICA_P_LOCAL_VIDEO + offset - 0x40000000);
 134         return -1;
 135 }
 136
 137 int
 138 vga_jazzio_match(device_t parent, cfdata_t match, void *aux)
 139 {
 140         struct jazzio_attach_args *ja = aux;
 141         bus_space_tag_t iot, memt;
 142
 143         if (vga_jazzio_init_tag(ja->ja_name, &iot, &memt))
 144                 return 0;
 145
 146         if (!vga_is_console(iot, WSDISPLAY_TYPE_JAZZVGA) &&
 147             !vga_common_probe(iot, memt))
 148                 return 0;
 149
 150         return 1;
 151 }
 152
 153 void
 154 vga_jazzio_attach(device_t parent, device_t self, void *aux)
 155 {
 156         struct vga_softc *sc = device_private(self);
 157         struct jazzio_attach_args *ja = aux;
 158         bus_space_tag_t iot, memt;
 159
 160         aprint_normal("\n");
 161
 162         sc->sc_dev = self;
 163         vga_jazzio_init_tag(ja->ja_name, &iot, &memt);
 164         vga_common_attach(sc, iot, memt, WSDISPLAY_TYPE_JAZZVGA, 0,
 165             &vga_jazzio_funcs);
 166 }
 167
 168 int
 169 vga_jazzio_cnattach(char *name)
 170 {
 171         bus_space_tag_t iot, memt;
 172
 173         if (vga_jazzio_init_tag(name, &iot, &memt))
 174                 return ENXIO;
 175         return vga_cnattach(iot, memt, WSDISPLAY_TYPE_JAZZVGA, 1);
 176 }