sys/dev/misc/syscons/scvtb.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  * $FreeBSD: src/sys/dev/syscons/scvtb.c,v 1.5.2.1 2001/07/16 05:21:23 yokota Exp $
  27  * $DragonFly: src/sys/dev/misc/syscons/scvtb.c,v 1.9 2006/09/05 05:48:10 dillon Exp $
  28  */
  29
  30 #include "opt_syscons.h"
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34
  35 #include <machine/console.h>
  36 #include <machine/md_var.h>
  37
  38 #include <dev/video/fb/fbreg.h>
  39 #include "syscons.h"
  40
  41 #define vtb_wrap(vtb, at, offset)                               \
  42     (((at) + (offset) + (vtb)->vtb_size)%(vtb)->vtb_size)
  43
  44 void
  45 sc_vtb_init(sc_vtb_t *vtb, int type, int cols, int rows, void *buf, int wait)
  46 {
  47         vtb->vtb_flags = 0;
  48         vtb->vtb_type = type;
  49         vtb->vtb_cols = cols;
  50         vtb->vtb_rows = rows;
  51         vtb->vtb_size = cols*rows;
  52         vtb->vtb_buffer = NULL;
  53         vtb->vtb_tail = 0;
  54
  55         switch (type) {
  56         case VTB_MEMORY:
  57         case VTB_RINGBUFFER:
  58                 if ((buf == NULL) && (cols*rows != 0)) {
  59                         vtb->vtb_buffer = kmalloc(cols*rows*sizeof(uint16_t),
  60                                     M_SYSCONS,
  61                                     M_ZERO | ((wait) ? M_WAITOK : M_NOWAIT));
  62                         if (vtb->vtb_buffer != NULL) {
  63                                 vtb->vtb_flags |= VTB_VALID;
  64                                 vtb->vtb_flags |= VTB_ALLOCED;
  65                         }
  66                 } else {
  67                         vtb->vtb_buffer = buf;
  68                         vtb->vtb_flags |= VTB_VALID;
  69                 }
  70                 break;
  71         case VTB_FRAMEBUFFER:
  72                 vtb->vtb_buffer = buf;
  73                 vtb->vtb_flags |= VTB_VALID;
  74                 break;
  75         default:
  76                 break;
  77         }
  78 }
  79
  80 void
  81 sc_vtb_destroy(sc_vtb_t *vtb)
  82 {
  83         uint16_t *p;
  84
  85         vtb->vtb_cols = 0;
  86         vtb->vtb_rows = 0;
  87         vtb->vtb_size = 0;
  88         vtb->vtb_tail = 0;
  89
  90         p = vtb->vtb_buffer;
  91         vtb->vtb_buffer = NULL;
  92         switch (vtb->vtb_type) {
  93         case VTB_MEMORY:
  94         case VTB_RINGBUFFER:
  95                 if ((vtb->vtb_flags & VTB_ALLOCED) && (p != NULL))
  96                         kfree(p, M_SYSCONS);
  97                 break;
  98         default:
  99                 break;
 100         }
 101         vtb->vtb_flags = 0;
 102         vtb->vtb_type = VTB_INVALID;
 103 }
 104
 105 size_t
 106 sc_vtb_size(int cols, int rows)
 107 {
 108         return (size_t)(cols*rows*sizeof(uint16_t));
 109 }
 110
 111 int
 112 sc_vtb_getc(sc_vtb_t *vtb, int at)
 113 {
 114         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 115                 return (readw(vtb->vtb_buffer + at) & 0x00ff);
 116         else
 117                 return (*(vtb->vtb_buffer + at) & 0x00ff);
 118 }
 119
 120 int
 121 sc_vtb_geta(sc_vtb_t *vtb, int at)
 122 {
 123         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 124                 return (readw(vtb->vtb_buffer + at) & 0xff00);
 125         else
 126                 return (*(vtb->vtb_buffer + at) & 0xff00);
 127 }
 128
 129 void
 130 sc_vtb_putc(sc_vtb_t *vtb, int at, int c, int a)
 131 {
 132         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 133                 writew(vtb->vtb_buffer + at, a | c);
 134         else
 135                 *(vtb->vtb_buffer + at) = a | c;
 136 }
 137
 138 uint16_t *
 139 sc_vtb_putchar(sc_vtb_t *vtb, uint16_t *p, int c, int a)
 140 {
 141         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 142                 writew(p, a | c);
 143         else
 144                 *p = a | c;
 145         return (p + 1);
 146 }
 147
 148 int
 149 sc_vtb_pos(sc_vtb_t *vtb, int pos, int offset)
 150 {
 151         return ((pos + offset + vtb->vtb_size)%vtb->vtb_size);
 152 }
 153
 154 void
 155 sc_vtb_clear(sc_vtb_t *vtb, int c, int attr)
 156 {
 157         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 158                 fillw_io(attr | c, vtb->vtb_buffer, vtb->vtb_size);
 159         else
 160                 fillw(attr | c, vtb->vtb_buffer, vtb->vtb_size);
 161 }
 162
 163 void
 164 sc_vtb_copy(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int to, int count)
 165 {
 166         /* XXX if both are VTB_VRAMEBUFFER... */
 167         if (vtb2->vtb_type == VTB_FRAMEBUFFER) {
 168                 bcopy_toio(vtb1->vtb_buffer + from, vtb2->vtb_buffer + to,
 169                            count*sizeof(uint16_t));
 170         } else if (vtb1->vtb_type == VTB_FRAMEBUFFER) {
 171                 bcopy_fromio(vtb1->vtb_buffer + from, vtb2->vtb_buffer + to,
 172                              count*sizeof(uint16_t));
 173         } else {
 174                 bcopy(vtb1->vtb_buffer + from, vtb2->vtb_buffer + to,
 175                       count*sizeof(uint16_t));
 176         }
 177 }
 178
 179 void
 180 sc_vtb_append(sc_vtb_t *vtb1, int from, sc_vtb_t *vtb2, int count)
 181 {
 182         int len;
 183
 184         if (vtb2->vtb_type != VTB_RINGBUFFER)
 185                 return;
 186
 187         while (count > 0) {
 188                 len = imin(count, vtb2->vtb_size - vtb2->vtb_tail);
 189                 if (vtb1->vtb_type == VTB_FRAMEBUFFER) {
 190                         bcopy_fromio(vtb1->vtb_buffer + from,
 191                                      vtb2->vtb_buffer + vtb2->vtb_tail,
 192                                      len*sizeof(uint16_t));
 193                 } else {
 194                         bcopy(vtb1->vtb_buffer + from,
 195                               vtb2->vtb_buffer + vtb2->vtb_tail,
 196                               len*sizeof(uint16_t));
 197                 }
 198                 from += len;
 199                 count -= len;
 200                 vtb2->vtb_tail = vtb_wrap(vtb2, vtb2->vtb_tail, len);
 201         }
 202 }
 203
 204 void
 205 sc_vtb_seek(sc_vtb_t *vtb, int pos)
 206 {
 207         vtb->vtb_tail = pos%vtb->vtb_size;
 208 }
 209
 210 void
 211 sc_vtb_erase(sc_vtb_t *vtb, int at, int count, int c, int attr)
 212 {
 213         if (at + count > vtb->vtb_size)
 214                 count = vtb->vtb_size - at;
 215         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 216                 fillw_io(attr | c, vtb->vtb_buffer + at, count);
 217         else
 218                 fillw(attr | c, vtb->vtb_buffer + at, count);
 219 }
 220
 221 void
 222 sc_vtb_move(sc_vtb_t *vtb, int from, int to, int count)
 223 {
 224         if (from + count > vtb->vtb_size)
 225                 count = vtb->vtb_size - from;
 226         if (to + count > vtb->vtb_size)
 227                 count = vtb->vtb_size - to;
 228         if (count <= 0)
 229                 return;
 230         if (vtb->vtb_type == VTB_FRAMEBUFFER) {
 231                 bcopy_io(vtb->vtb_buffer + from, vtb->vtb_buffer + to,
 232                          count*sizeof(uint16_t));
 233         } else {
 234                 bcopy(vtb->vtb_buffer + from, vtb->vtb_buffer + to,
 235                       count*sizeof(uint16_t));
 236         }
 237 }
 238
 239 void
 240 sc_vtb_delete(sc_vtb_t *vtb, int at, int count, int c, int attr)
 241 {
 242         int len;
 243
 244         if (at + count > vtb->vtb_size)
 245                 count = vtb->vtb_size - at;
 246         len = vtb->vtb_size - at - count;
 247         if (len > 0) {
 248                 if (vtb->vtb_type == VTB_FRAMEBUFFER) {
 249                         bcopy_io(vtb->vtb_buffer + at + count,
 250                                  vtb->vtb_buffer + at,
 251                                  len*sizeof(uint16_t));
 252                 } else {
 253                         bcopy(vtb->vtb_buffer + at + count,
 254                               vtb->vtb_buffer + at,
 255                               len*sizeof(uint16_t));
 256                 }
 257         }
 258         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 259                 fillw_io(attr | c, vtb->vtb_buffer + at + len,
 260                          vtb->vtb_size - at - len);
 261         else
 262                 fillw(attr | c, vtb->vtb_buffer + at + len,
 263                       vtb->vtb_size - at - len);
 264 }
 265
 266 void
 267 sc_vtb_ins(sc_vtb_t *vtb, int at, int count, int c, int attr)
 268 {
 269         if (at + count > vtb->vtb_size) {
 270                 count = vtb->vtb_size - at;
 271         } else {
 272                 if (vtb->vtb_type == VTB_FRAMEBUFFER) {
 273                         bcopy_io(vtb->vtb_buffer + at,
 274                                  vtb->vtb_buffer + at + count,
 275                                  (vtb->vtb_size - at - count)*sizeof(uint16_t));
 276                 } else {
 277                         bcopy(vtb->vtb_buffer + at,
 278                               vtb->vtb_buffer + at + count,
 279                               (vtb->vtb_size - at - count)*sizeof(uint16_t));
 280                 }
 281         }
 282         if (vtb->vtb_type == VTB_FRAMEBUFFER)
 283                 fillw_io(attr | c, vtb->vtb_buffer + at, count);
 284         else
 285                 fillw(attr | c, vtb->vtb_buffer + at, count);
 286 }