sys/arch/sun2/dev/bwtwo_any.c

   1 /*      $NetBSD: bwtwo_any.c,v 1.16 2008/04/28 20:23:37 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe and Matthew Fredette.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This software was developed by the Computer Systems Engineering group
  37  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  38  * contributed to Berkeley.
  39  *
  40  * All advertising materials mentioning features or use of this software
  41  * must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Lawrence Berkeley Laboratory.
  44  *
  45  * Redistribution and use in source and binary forms, with or without
  46  * modification, are permitted provided that the following conditions
  47  * are met:
  48  * 1. Redistributions of source code must retain the above copyright
  49  *    notice, this list of conditions and the following disclaimer.
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  * 3. Neither the name of the University nor the names of its contributors
  54  *    may be used to endorse or promote products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  *
  69  *      @(#)bwtwo.c     8.1 (Berkeley) 6/11/93
  70  */
  71
  72 /*
  73  * black&white display (bwtwo) driver.
  74  *
  75  * Does not handle interrupts, even though they can occur.
  76  *
  77  * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.org>.
  78  * Overlay plane handling hints and ideas provided by Brad Spencer.
  79  */
  80
  81 #include <sys/cdefs.h>
  82 __KERNEL_RCSID(0, "$NetBSD: bwtwo_any.c,v 1.16 2008/04/28 20:23:37 martin Exp $");
  83
  84 #include <sys/param.h>
  85 #include <sys/systm.h>
  86 #include <sys/device.h>
  87 #include <sys/ioctl.h>
  88 #include <sys/malloc.h>
  89 #include <sys/mman.h>
  90 #include <sys/tty.h>
  91 #include <sys/conf.h>
  92
  93 #include <machine/autoconf.h>
  94 #include <sun2/sun2/control.h>
  95
  96 #include <dev/sun/fbio.h>
  97 #include <dev/sun/fbvar.h>
  98 #include <dev/sun/btreg.h>
  99 #include <sun2/dev/bwtworeg.h>
 100 #include <dev/sun/bwtwovar.h>
 101
 102 /* autoconfiguration driver */
 103 static int      bwtwomatch_any(device_t, cfdata_t, void *);
 104 static void     bwtwoattach_any(device_t, device_t, void *);
 105
 106 struct bwtwosun2_softc {
 107         struct bwtwo_softc sc;
 108         bus_space_handle_t bh;
 109 };
 110
 111 CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwosun2_softc),
 112     bwtwomatch_any, bwtwoattach_any, NULL, NULL);
 113
 114 CFATTACH_DECL_NEW(bwtwo_obmem, sizeof(struct bwtwosun2_softc),
 115     bwtwomatch_any, bwtwoattach_any, NULL, NULL);
 116
 117 static int      bwtwo_get_video_sun2(struct bwtwo_softc *);
 118 static void     bwtwo_set_video_sun2(struct bwtwo_softc *, int);
 119
 120 extern int fbnode;
 121
 122 static int
 123 bwtwomatch_any(device_t parent, cfdata_t cf, void *aux)
 124 {
 125         struct mainbus_attach_args *ma = aux;
 126         bus_space_handle_t bh;
 127         int matched;
 128
 129         /* Make sure there is something there... */
 130         if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG,
 131                           sizeof(struct bwtworeg), 0, &bh))
 132                 return (0);
 133         matched = (bus_space_peek_1(ma->ma_bustag, bh, 0, NULL) == 0);
 134         bus_space_unmap(ma->ma_bustag, bh, sizeof(struct bwtworeg));
 135         return (matched);
 136 }
 137
 138 static void
 139 bwtwoattach_any(device_t parent, device_t self, void *aux)
 140 {
 141         struct bwtwosun2_softc *scsun2 = device_private(self);
 142         struct bwtwo_softc *sc = &scsun2->sc;
 143         struct mainbus_attach_args *ma = aux;
 144         struct fbdevice *fb = &sc->sc_fb;
 145         bus_space_handle_t bh;
 146         int isconsole;
 147         const char *name;
 148
 149         sc->sc_dev = self;
 150
 151         /* Remember cookies for bwtwo_mmap() */
 152         sc->sc_bustag = ma->ma_bustag;
 153         sc->sc_paddr = ma->ma_paddr;
 154
 155         fb->fb_flags = device_cfdata(self)->cf_flags;
 156         fb->fb_type.fb_depth = 1;
 157         fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
 158
 159         isconsole = fb_is_console(0);
 160
 161         /* A plain bwtwo */
 162         sc->sc_reg = NULL;
 163         fb->fb_pfour = NULL;
 164         name = "bwtwo";
 165         sc->sc_pixeloffset = BWREG_MEM;
 166         sc->sc_get_video = bwtwo_get_video_sun2;
 167         sc->sc_set_video = bwtwo_set_video_sun2;
 168
 169         /* Map the registers. */
 170         if (bus_space_map(ma->ma_bustag, ma->ma_paddr + BWREG_REG,
 171                           sizeof(struct bwtworeg), 0, &scsun2->bh)) {
 172                 printf("%s: cannot map regs\n", device_xname(self));
 173                 return;
 174         }
 175
 176         if (isconsole) {
 177                 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
 178                 if (bus_space_map(ma->ma_bustag,
 179                                   ma->ma_paddr + sc->sc_pixeloffset,
 180                                   ramsize,
 181                                   BUS_SPACE_MAP_LINEAR, &bh) != 0) {
 182                         printf("%s: cannot map pixels\n", device_xname(self));
 183                         return;
 184                 }
 185                 sc->sc_fb.fb_pixels = (char *)bh;
 186         }
 187
 188         bwtwoattach(sc, name, isconsole);
 189 }
 190
 191 static void
 192 bwtwo_set_video_sun2(struct bwtwo_softc *sc, int enable)
 193 {
 194         struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc;
 195         unsigned char cr;
 196
 197         cr = bus_space_read_1(sc->sc_bustag, scsun2->bh, 0);
 198         bus_space_write_1(sc->sc_bustag, scsun2->bh, 0,
 199                           (enable ?
 200                            (cr | BW2_CR_ENABLE_VIDEO) :
 201                            (cr & ~BW2_CR_ENABLE_VIDEO)));
 202         return;
 203 }
 204
 205 static int
 206 bwtwo_get_video_sun2(struct bwtwo_softc *sc)
 207 {
 208         struct bwtwosun2_softc *scsun2 = (struct bwtwosun2_softc *)sc;
 209
 210         return ((bus_space_read_1(sc->sc_bustag, scsun2->bh, 0) &
 211                  BW2_CR_ENABLE_VIDEO) != 0);
 212 }