sys/arch/hp300/dev/ite_subr.c

   1 /*      $NetBSD: ite_subr.c,v 1.9.12.5 2005/11/10 13:56:09 skrll 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 $Hdr: ite_subr.c 1.4 92/01/21$
  36  *
  37  *      @(#)ite_subr.c  8.2 (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 $Hdr: ite_subr.c 1.4 92/01/21$
  75  *
  76  *      @(#)ite_subr.c  8.2 (Berkeley) 1/12/94
  77  */
  78
  79 #include <sys/cdefs.h>
  80 __KERNEL_RCSID(0, "$NetBSD: ite_subr.c,v 1.9.12.5 2005/11/10 13:56:09 skrll Exp $");
  81
  82 #include <sys/param.h>
  83 #include <sys/conf.h>
  84 #include <sys/proc.h>
  85 #include <sys/ioctl.h>
  86 #include <sys/tty.h>
  87 #include <sys/systm.h>
  88 #include <sys/device.h>
  89
  90 #include <hp300/dev/itevar.h>
  91 #include <hp300/dev/itereg.h>
  92
  93 #include <machine/cpu.h>
  94
  95 void
  96 ite_fontinfo(struct ite_data *ip)
  97 {
  98         u_long fontaddr = getword(ip, getword(ip, FONTROM) + FONTADDR);
  99
 100         ip->ftheight = getbyte(ip, fontaddr + FONTHEIGHT);
 101         ip->ftwidth  = getbyte(ip, fontaddr + FONTWIDTH);
 102         ip->rows     = ip->dheight / ip->ftheight;
 103         ip->cols     = ip->dwidth / ip->ftwidth;
 104
 105         if (ip->fbwidth > ip->dwidth) {
 106                 /*
 107                  * Stuff goes to right of display.
 108                  */
 109                 ip->fontx    = ip->dwidth;
 110                 ip->fonty    = 0;
 111                 ip->cpl      = (ip->fbwidth - ip->dwidth) / ip->ftwidth;
 112                 ip->cblankx  = ip->dwidth;
 113                 ip->cblanky  = ip->fonty + ((128 / ip->cpl) +1) * ip->ftheight;
 114         }
 115         else {
 116                 /*
 117                  * Stuff goes below the display.
 118                  */
 119                 ip->fontx   = 0;
 120                 ip->fonty   = ip->dheight;
 121                 ip->cpl     = ip->fbwidth / ip->ftwidth;
 122                 ip->cblankx = 0;
 123                 ip->cblanky = ip->fonty + ((128 / ip->cpl) + 1) * ip->ftheight;
 124         }
 125 }
 126
 127 void
 128 ite_fontinit(struct ite_data *ip)
 129 {
 130         int bytewidth = (((ip->ftwidth - 1) / 8) + 1);
 131         int glyphsize = bytewidth * ip->ftheight;
 132         u_char fontbuf[500];            /* XXX malloc not initialize yet */
 133         u_char *dp;
 134         volatile u_char *fbmem;
 135         int c, i, romp;
 136
 137         romp = getword(ip, getword(ip, FONTROM) + FONTADDR) + FONTDATA;
 138         for (c = 0; c < 128; c++) {
 139                 fbmem = (FBBASE +
 140                      (ip->fonty + (c / ip->cpl) * ip->ftheight) * ip->fbwidth +
 141                      (ip->fontx + (c % ip->cpl) * ip->ftwidth));
 142                 dp = fontbuf;
 143                 for (i = 0; i < glyphsize; i++) {
 144                         *dp++ = getbyte(ip, romp);
 145                         romp += 2;
 146                 }
 147                 writeglyph(ip, fbmem, fontbuf);
 148         }
 149 }
 150
 151 /*
 152  * Display independent versions of the readbyte and writeglyph routines.
 153  */
 154 u_char
 155 ite_readbyte(struct ite_data *ip, int disp)
 156 {
 157         return((u_char) *(((u_char *)ip->regbase) + disp));
 158 }
 159
 160 void
 161 ite_writeglyph(struct ite_data *ip, volatile u_char *fbmem, u_char *glyphp)
 162 {
 163         int bn;
 164         int l, b;
 165
 166         for (l = 0; l < ip->ftheight; l++) {
 167                 bn = 7;
 168                 for (b = 0; b < ip->ftwidth; b++) {
 169                         if ((1 << bn) & *glyphp)
 170                                 *fbmem++ = 1;
 171                         else
 172                                 *fbmem++ = 0;
 173                         if (--bn < 0) {
 174                                 bn = 7;
 175                                 glyphp++;
 176                         }
 177                 }
 178                 if (bn < 7)
 179                         glyphp++;
 180                 fbmem -= ip->ftwidth;
 181                 fbmem += ip->fbwidth;
 182         }
 183 }