sys/arch/x68k/dev/grf_gv.c

   1 /*      $NetBSD: grf_gv.c,v 1.13 2007/12/31 13:38:53 ad Exp $   */
   2
   3 /*
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Systems Programming Group of the University of Utah Computer
   9  * Science Department.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: Utah $Hdr: grf_tc.c 1.20 93/08/13$
  36  *
  37  *      @(#)grf_tc.c    8.4 (Berkeley) 1/12/94
  38  */
  39 /*
  40  * Copyright (c) 1988 University of Utah.
  41  *
  42  * This code is derived from software contributed to Berkeley by
  43  * the Systems Programming Group of the University of Utah Computer
  44  * Science Department.
  45  *
  46  * Redistribution and use in source and binary forms, with or without
  47  * modification, are permitted provided that the following conditions
  48  * are met:
  49  * 1. Redistributions of source code must retain the above copyright
  50  *    notice, this list of conditions and the following disclaimer.
  51  * 2. Redistributions in binary form must reproduce the above copyright
  52  *    notice, this list of conditions and the following disclaimer in the
  53  *    documentation and/or other materials provided with the distribution.
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the University of
  57  *      California, Berkeley and its contributors.
  58  * 4. Neither the name of the University nor the names of its contributors
  59  *    may be used to endorse or promote products derived from this software
  60  *    without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * from: Utah $Hdr: grf_tc.c 1.20 93/08/13$
  75  *
  76  *      @(#)grf_tc.c    8.4 (Berkeley) 1/12/94
  77  */
  78
  79 /*
  80  * Graphics routines for the X68K native custom chip set.
  81  */
  82
  83 #include <sys/cdefs.h>
  84 __KERNEL_RCSID(0, "$NetBSD: grf_gv.c,v 1.13 2007/12/31 13:38:53 ad Exp $");
  85
  86 #include <sys/param.h>
  87 #include <sys/device.h>
  88 #include <sys/errno.h>
  89
  90 #include <machine/cpu.h>
  91 #include <machine/grfioctl.h>
  92
  93 #include <x68k/dev/grfvar.h>
  94 #include <x68k/x68k/iodevice.h>
  95
  96 int gv_init(struct grf_softc *, void *);
  97 int gv_mode(struct grf_softc *, u_long, void *);
  98
  99 /* Initialize hardware.
 100  * Must fill in the grfinfo structure in g_softc.
 101  * Returns 0 if hardware not present, non-zero ow.
 102  */
 103 int
 104 gv_init(struct grf_softc *gp, void *addr)
 105 {
 106         struct grfinfo *gi = &gp->g_display;
 107
 108         gi->gd_fbwidth  = 1024;
 109         gi->gd_fbheight = 1024;
 110         gi->gd_planes  = 4;
 111         gi->gd_regaddr = (void *)0x00e80000;
 112         gi->gd_regsize = 0x00010000;  /* contains system port */
 113         gi->gd_fbaddr  = (void *)0x00c00000;
 114         gi->gd_fbsize  = gi->gd_fbwidth * gi->gd_fbheight * 2;
 115         gp->g_regkva   = addr;
 116         gp->g_fbkva    = addr;
 117         switch(IODEVbase->io_sram[0x1d]) {
 118         case 18:
 119                 /*
 120                  * mode 18, 24kHz
 121                  */
 122                 gi->gd_dwidth  = 1024;
 123                 gi->gd_dheight =  848;
 124                 break;
 125         case 19:
 126                 /*
 127                  * mode 19, 31kHz VGA mode
 128                  */
 129                 gi->gd_dwidth  = 640;
 130                 gi->gd_dheight = 480;
 131                 break;
 132         default:
 133                 /*
 134                  * mode 16, 31kHz (default)
 135                  */
 136                 gi->gd_dwidth  = 768;
 137                 gi->gd_dheight = 512;
 138                 break;
 139         }
 140         gi->gd_colors  = 16;
 141
 142         return 1;
 143 }
 144
 145 /*
 146  * Change the mode of the display.
 147  * Right now all we can do is grfon/grfoff.
 148  * Return a UNIX error number or 0 for success.
 149  */
 150 /*ARGSUSED*/
 151 int
 152 gv_mode(struct grf_softc *gp, u_long cmd, void *data)
 153 {
 154         int error = 0;
 155
 156         switch (cmd) {
 157         case GM_GRFON:
 158         case GM_GRFOFF:
 159                 break;
 160
 161         /*
 162          * Remember UVA of mapping for GCDESCRIBE.
 163          * XXX this should be per-process.
 164          */
 165         case GM_MAP:
 166                 gp->g_data = data;
 167                 break;
 168
 169         case GM_UNMAP:
 170                 gp->g_data = 0;
 171                 break;
 172
 173         case GM_GRFSETVMODE:
 174                 if (*(int *)data == 1) {
 175                         struct grfinfo *gi = &gp->g_display;
 176                         volatile struct crtc *crtc = &IODEVbase->io_crtc;
 177                         /* Reset CRTC, set dwidth and dheight accordingly */
 178                         crtc->r20 = (crtc->r20 & 0xFF00) | 0x1a;
 179                         crtc->r08 = 0x1b;
 180                         crtc->r07 = 0x19c;
 181                         crtc->r06 = 0x1c;
 182                         crtc->r05 = 0x02;
 183                         crtc->r04 = 0x019f;
 184                         crtc->r03 = 0x9a;
 185                         crtc->r02 = 0x1a;
 186                         crtc->r01 = 0x09;
 187                         crtc->r00 = 0xa4;
 188                         gi->gd_dwidth = 1024;
 189                         gi->gd_dheight = 768;
 190                 }
 191                 break;
 192
 193         default:
 194                 error = EINVAL;
 195                 break;
 196         }
 197         return error;
 198 }