sys/arch/sparc/dev/bwtwo_obio.c

   1 /*      $NetBSD: bwtwo_obio.c,v 1.16 2008/04/28 20:23:35 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.
   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_obio.c,v 1.16 2008/04/28 20:23:35 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 <machine/eeprom.h>
  95 #include <machine/ctlreg.h>
  96 #include <sparc/sparc/asm.h>
  97
  98 #include <dev/sun/fbio.h>
  99 #include <dev/sun/fbvar.h>
 100 #include <dev/sun/btreg.h>
 101 #include <dev/sun/bwtworeg.h>
 102 #include <dev/sun/bwtwovar.h>
 103 #include <dev/sun/pfourreg.h>
 104
 105 /* autoconfiguration driver */
 106 static int      bwtwomatch_obio(device_t, cfdata_t, void *);
 107 static void     bwtwoattach_obio(device_t, device_t, void *);
 108
 109
 110 CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwo_softc),
 111     bwtwomatch_obio, bwtwoattach_obio, NULL, NULL);
 112
 113 static int      bwtwo_get_video_sun4(struct bwtwo_softc *);
 114 static void     bwtwo_set_video_sun4(struct bwtwo_softc *, int);
 115
 116 extern int fbnode;
 117
 118 static int
 119 bwtwomatch_obio(device_t parent, cfdata_t cf, void *aux)
 120 {
 121         union obio_attach_args *uoba = aux;
 122         struct obio4_attach_args *oba;
 123
 124         if (uoba->uoba_isobio4 == 0)
 125                 return (0);
 126
 127         oba = &uoba->uoba_oba4;
 128         return (bus_space_probe(oba->oba_bustag, oba->oba_paddr,
 129                                 4,      /* probe size */
 130                                 0,      /* offset */
 131                                 0,      /* flags */
 132                                 bwtwo_pfour_probe, cf));
 133 }
 134
 135 static void
 136 bwtwoattach_obio(device_t parent, device_t self, void *aux)
 137 {
 138         struct bwtwo_softc *sc = device_private(self);
 139         union obio_attach_args *uoba = aux;
 140         struct obio4_attach_args *oba;
 141         struct fbdevice *fb = &sc->sc_fb;
 142         struct eeprom *eep = (struct eeprom *)eeprom_va;
 143         bus_space_handle_t bh;
 144         int constype, isconsole;
 145         const char *name;
 146
 147         sc->sc_dev = self;
 148         oba = &uoba->uoba_oba4;
 149
 150         /* Remember cookies for bwtwo_mmap() */
 151         sc->sc_bustag = oba->oba_bustag;
 152         sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
 153
 154         fb->fb_flags = device_cfdata(self)->cf_flags;
 155         fb->fb_type.fb_depth = 1;
 156         fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
 157
 158         constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW;
 159         if (eep == NULL || eep->eeConsole == constype)
 160                 isconsole = fb_is_console(0);
 161         else
 162                 isconsole = 0;
 163
 164         if (fb->fb_flags & FB_PFOUR) {
 165                 /*
 166                  * Map the pfour control register.
 167                  * Set pixel offset to appropriate overlay plane.
 168                  */
 169                 name = "bwtwo/p4";
 170
 171                 if (bus_space_map(oba->oba_bustag,
 172                                   oba->oba_paddr,
 173                                   sizeof(uint32_t),
 174                                   BUS_SPACE_MAP_LINEAR,
 175                                   &bh) != 0) {
 176                         printf("%s: cannot map pfour register\n",
 177                             device_xname(self));
 178                         return;
 179                 }
 180                 fb->fb_pfour = (uint32_t *)bh;
 181                 sc->sc_reg = NULL;
 182
 183                 /*
 184                  * Notice if this is an overlay plane on a color
 185                  * framebuffer.  Note that PFOUR_COLOR_OFF_OVERLAY
 186                  * is the same as PFOUR_BW_OFF, but we use the
 187                  * different names anyway.
 188                  */
 189                 switch (PFOUR_ID(*fb->fb_pfour)) {
 190                 case PFOUR_ID_COLOR8P1:
 191                         sc->sc_ovtype = BWO_CGFOUR;
 192                         sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
 193                         break;
 194
 195                 case PFOUR_ID_COLOR24:
 196                         sc->sc_ovtype = BWO_CGEIGHT;
 197                         sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY;
 198                         break;
 199
 200                 default:
 201                         sc->sc_ovtype = BWO_NONE;
 202                         sc->sc_pixeloffset = PFOUR_BW_OFF;
 203                         break;
 204                 }
 205
 206         } else {
 207                 /* A plain bwtwo */
 208                 if (bus_space_map(oba->oba_bustag,
 209                                   oba->oba_paddr + BWREG_REG,
 210                                   sizeof(struct fbcontrol),
 211                                   BUS_SPACE_MAP_LINEAR,
 212                                   &bh) != 0) {
 213                         printf("%s: cannot map control registers\n",
 214                             device_xname(self));
 215                         return;
 216                 }
 217                 sc->sc_reg = (struct fbcontrol *)bh;
 218                 fb->fb_pfour = NULL;
 219
 220                 name = "bwtwo";
 221                 sc->sc_pixeloffset = BWREG_MEM;
 222         }
 223         sc->sc_get_video = bwtwo_get_video_sun4;
 224         sc->sc_set_video = bwtwo_set_video_sun4;
 225
 226         if (isconsole) {
 227                 int ramsize = fb->fb_type.fb_height * fb->fb_linebytes;
 228                 if (bus_space_map(oba->oba_bustag,
 229                                   oba->oba_paddr + sc->sc_pixeloffset,
 230                                   ramsize,
 231                                   BUS_SPACE_MAP_LINEAR,
 232                                   &bh) != 0) {
 233                         printf("%s: cannot map pixels\n", device_xname(self));
 234                         return;
 235                 }
 236                 sc->sc_fb.fb_pixels = (char *)bh;
 237         }
 238
 239         bwtwoattach(sc, name, isconsole);
 240 }
 241
 242 static void
 243 bwtwo_set_video_sun4(struct bwtwo_softc *sc, int enable)
 244 {
 245
 246         if (sc->sc_fb.fb_flags & FB_PFOUR) {
 247                 /*
 248                  * This handles the overlay plane case, too.
 249                  */
 250                 fb_pfour_set_video(&sc->sc_fb, enable);
 251                 return;
 252         }
 253         if (enable)
 254                 stba(AC_SYSENABLE, ASI_CONTROL,
 255                      lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
 256         else
 257                 stba(AC_SYSENABLE, ASI_CONTROL,
 258                      lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
 259
 260         return;
 261 }
 262
 263 static int
 264 bwtwo_get_video_sun4(struct bwtwo_softc *sc)
 265 {
 266
 267         if (sc->sc_fb.fb_flags & FB_PFOUR) {
 268                 /*
 269                  * This handles the overlay plane case, too.
 270                  */
 271                 return (fb_pfour_get_video(&sc->sc_fb));
 272         } else
 273                 return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0);
 274 }