sys/dev/misc/syscons/scgfbrndr.c

   1 /*-
   2  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer as
  10  *    the first lines of this file unmodified.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  *
  26  * Copyright (c) 2000 Andrew Miklic
  27  *
  28  * $FreeBSD: src/sys/dev/syscons/scgfbrndr.c,v 1.14.2.1 2001/11/01 08:33:15 obrien Exp $
  29  * $DragonFly: src/sys/dev/misc/syscons/scgfbrndr.c,v 1.6 2006/10/25 22:55:55 dillon Exp $
  30  */
  31
  32 #include "opt_syscons.h"
  33 #include "opt_gfb.h"
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/fbio.h>
  39 #include <sys/consio.h>
  40 #include <sys/bus.h>
  41
  42 #include <dev/fb/fbreg.h>
  43 #include "syscons.h"
  44
  45 static vr_clear_t               gfb_clear;
  46 static vr_draw_border_t         gfb_border;
  47 static vr_draw_t                gfb_draw;
  48 static vr_set_cursor_t          gfb_cursor_shape;
  49 static vr_draw_cursor_t         gfb_cursor;
  50 static vr_blink_cursor_t        gfb_blink;
  51 #ifndef SC_NO_CUTPASTE
  52 static vr_draw_mouse_t          gfb_mouse;
  53 #else
  54 #define gfb_mouse               (vr_draw_mouse_t *)gfb_nop
  55 #endif
  56
  57 static void                     gfb_nop(scr_stat *scp, ...);
  58
  59 sc_rndr_sw_t txtrndrsw = {
  60         gfb_clear,
  61         gfb_border,
  62         gfb_draw,
  63         gfb_cursor_shape,
  64         gfb_cursor,
  65         gfb_blink,
  66         (vr_set_mouse_t *)gfb_nop,
  67         gfb_mouse,
  68 };
  69
  70 #ifdef SC_PIXEL_MODE
  71 sc_rndr_sw_t gfbrndrsw = {
  72         gfb_clear,
  73         gfb_border,
  74         gfb_draw,
  75         gfb_cursor_shape,
  76         gfb_cursor,
  77         gfb_blink,
  78         (vr_set_mouse_t *)gfb_nop,
  79         gfb_mouse,
  80 };
  81 #endif /* SC_PIXEL_MODE */
  82
  83 #ifndef SC_NO_MODE_CHANGE
  84 sc_rndr_sw_t grrndrsw = {
  85         (vr_clear_t *)gfb_nop,
  86         gfb_border,
  87         (vr_draw_t *)gfb_nop,
  88         (vr_set_cursor_t *)gfb_nop,
  89         (vr_draw_cursor_t *)gfb_nop,
  90         (vr_blink_cursor_t *)gfb_nop,
  91         (vr_set_mouse_t *)gfb_nop,
  92         (vr_draw_mouse_t *)gfb_nop,
  93 };
  94 #endif /* SC_NO_MODE_CHANGE */
  95
  96 #ifndef SC_NO_CUTPASTE
  97
  98 static u_char mouse_pointer[16] = {
  99         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
 100         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
 101 };
 102 #endif
 103
 104 static void
 105 gfb_nop(scr_stat *scp, ...)
 106 {
 107 }
 108
 109 /* text mode renderer */
 110
 111 static void
 112 gfb_clear(scr_stat *scp, int c, int attr)
 113 {
 114         (*vidsw[scp->sc->adapter]->clear)(scp->sc->adp);
 115 }
 116
 117 static void
 118 gfb_border(scr_stat *scp, int color)
 119 {
 120         (*vidsw[scp->sc->adapter]->set_border)(scp->sc->adp, color);
 121 }
 122
 123 static void
 124 gfb_draw(scr_stat *scp, int from, int count, int flip)
 125 {
 126         char c;
 127         char a;
 128         int i, n;
 129         video_adapter_t *adp;
 130
 131         adp = scp->sc->adp;
 132
 133         /*
 134            Determine if we need to scroll based on the offset
 135            and the number of characters to be displayed...
 136          */
 137         if (from + count > scp->xsize*scp->ysize) {
 138
 139                 /*
 140                    Calculate the number of characters past the end of the
 141                    visible screen...
 142                 */
 143                 count = (from + count) -
 144                     (adp->va_info.vi_width * adp->va_info.vi_height);
 145
 146                 /*
 147                    Calculate the number of rows past the end of the visible
 148                    screen...
 149                 */
 150                 n = (count / adp->va_info.vi_width) + 1;
 151
 152                 /* Scroll to make room for new text rows... */
 153                 (*vidsw[scp->sc->adapter]->copy)(adp, n, 0, n);
 154 #ifdef 0
 155                 (*vidsw[scp->sc->adapter]->clear)(adp, n);
 156 #endif
 157
 158                 /* Display new text rows... */
 159                 (*vidsw[scp->sc->adapter]->puts)(adp, from,
 160                     scp->vtb.vtb_buffer + from, count);
 161         }
 162
 163         /*
 164            We don't need to scroll, so we can just put the characters
 165            all-at-once...
 166         */
 167         else {
 168
 169                 /*
 170                    Determine the method by which we are to display characters
 171                    (are we going to print forwards or backwards?
 172                    do we need to do a character-by-character copy, then?)...
 173                 */
 174                 if (flip)
 175                         for (i = count; i-- > 0; ++from) {
 176                                 c = sc_vtb_getc(&scp->vtb, from);
 177                                 a = sc_vtb_geta(&scp->vtb, from) >> 8;
 178                                 (*vidsw[scp->sc->adapter]->putc)(adp, from, c,
 179                                     a);
 180                         }
 181                 else {
 182                         (*vidsw[scp->sc->adapter]->puts)(adp, from,
 183                             scp->vtb.vtb_buffer + from, count);
 184                 }
 185         }
 186 }
 187
 188 static void
 189 gfb_cursor_shape(scr_stat *scp, int base, int height, int blink)
 190 {
 191         if (base < 0 || base >= scp->font_size)
 192                 return;
 193         /* the caller may set height <= 0 in order to disable the cursor */
 194 #if 0
 195         scp->cursor_base = base;
 196         scp->cursor_height = height;
 197 #endif
 198         (*vidsw[scp->sc->adapter]->set_hw_cursor_shape)(scp->sc->adp,
 199             base, height, scp->font_size, blink);
 200 }
 201
 202 static int pxlblinkrate = 0;
 203
 204 #ifdef 0
 205 static void
 206 gfb_cursor(scr_stat *scp, int at, int blink, int on, int flip)
 207 {
 208         video_adapter_t *adp;
 209
 210         if (scp->cursor_height <= 0)    /* the text cursor is disabled */
 211                 return;
 212
 213         adp = scp->sc->adp;
 214         if(blink) {
 215                 scp->status |= VR_CURSOR_BLINK;
 216                 if (on) {
 217                         scp->status |= VR_CURSOR_ON;
 218                         (*vidsw[adp->va_index]->set_hw_cursor)(adp,
 219                             at%scp->xsize,
 220                             at/scp->xsize);
 221                 } else {
 222                         if (scp->status & VR_CURSOR_ON)
 223                                 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1,
 224                                     -1);
 225                         scp->status &= ~VR_CURSOR_ON;
 226                 }
 227         } else {
 228                 scp->status &= ~VR_CURSOR_BLINK;
 229                 if(on) {
 230                         scp->status |= VR_CURSOR_ON;
 231                         scp->cursor_saveunder_char = sc_vtb_getc(&scp->scr, at);
 232                         scp->cursor_saveunder_attr = sc_vtb_geta(&scp->scr, at);
 233                         (*vidsw[scp->sc->adapter]->putc)(scp->sc->adp, at,
 234                             scp->cursor_saveunder_char,
 235                             scp->cursor_saveunder_attr);
 236                 } else {
 237                         if (scp->status & VR_CURSOR_ON)
 238                                 (*vidsw[scp->sc->adapter]->putc)(scp->sc->adp,
 239                                     at, scp->cursor_saveunder_char,
 240                                     scp->cursor_saveunder_attr);
 241                         scp->status &= ~VR_CURSOR_ON;
 242                 }
 243         }
 244 }
 245 #endif
 246
 247 static void
 248 gfb_cursor(scr_stat *scp, int at, int blink, int on, int flip)
 249 {
 250         video_adapter_t *adp;
 251
 252         adp = scp->sc->adp;
 253         if (scp->cursor_height <= 0)    /* the text cursor is disabled */
 254                 return;
 255
 256         if (on) {
 257                 if (!blink) {
 258                         scp->status |= VR_CURSOR_ON;
 259                         (*vidsw[adp->va_index]->set_hw_cursor)(adp,
 260                             at%scp->xsize, at/scp->xsize);
 261                 } else if (++pxlblinkrate & 4) {
 262                         pxlblinkrate = 0;
 263                         scp->status ^= VR_CURSOR_ON;
 264                         if(scp->status & VR_CURSOR_ON)
 265                                 (*vidsw[adp->va_index]->set_hw_cursor)(adp,
 266                                     at%scp->xsize, at/scp->xsize);
 267                         else
 268                                 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1,
 269                                     -1);
 270                 }
 271         } else {
 272                 if (scp->status & VR_CURSOR_ON)
 273                         (*vidsw[adp->va_index]->set_hw_cursor)(adp,
 274                             at%scp->xsize, at/scp->xsize);
 275                 scp->status &= ~VR_CURSOR_ON;
 276         }
 277         if (blink)
 278                 scp->status |= VR_CURSOR_BLINK;
 279         else
 280                 scp->status &= ~VR_CURSOR_BLINK;
 281 }
 282
 283 static void
 284 gfb_blink(scr_stat *scp, int at, int flip)
 285 {
 286         if (!(scp->status & VR_CURSOR_BLINK))
 287                 return;
 288         if (!(++pxlblinkrate & 4))
 289                 return;
 290         pxlblinkrate = 0;
 291         scp->status ^= VR_CURSOR_ON;
 292         gfb_cursor(scp, at, scp->status & VR_CURSOR_BLINK,
 293             scp->status & VR_CURSOR_ON, flip);
 294 }
 295
 296 #ifndef SC_NO_CUTPASTE
 297
 298 static void
 299 gfb_mouse(scr_stat *scp, int x, int y, int on)
 300 {
 301         int i, pos;
 302
 303         if (on) {
 304
 305                 /* Display the mouse pointer image... */
 306                 (*vidsw[scp->sc->adapter]->putm)(scp->sc->adp, x, y,
 307                     mouse_pointer, 0xffffffff, 16);
 308         } else {
 309
 310                 /*
 311                    Erase the mouse cursor image by redrawing the text
 312                    underneath it...
 313                 */
 314                 return;
 315                 pos = x*scp->xsize + y;
 316                 i = (y < scp->xsize - 1) ? 2 : 1;
 317                 (*scp->rndr->draw)(scp, pos, i, FALSE);
 318                 if (x < scp->ysize - 1)
 319                         (*scp->rndr->draw)(scp, pos + scp->xsize, i, FALSE);
 320         }
 321 }
 322
 323 #endif /* SC_NO_CUTPASTE */