LXR coreboot/src/include/pc80/vga

   1/*
   2 * This file is part of the coreboot project.
   3 *
   4 * Copyright (C) 2007 Luc Verhaegen <libv@skynet.be>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation; either version 2 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program; if not, write to the Free Software
  18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19 */
  20
  21#ifndef VGA_IO_H
  22#define VGA_IO_H
  23
  24/*
  25 * All IO necessary to poke VGA registers.
  26 */
  27
  28/* VGA Enable */
  29unsigned char vga_enable_read(void);
  30void vga_enable_write(unsigned char value);
  31void vga_enable_mask(unsigned char value, unsigned char mask);
  32
  33/* Miscellaneous register */
  34unsigned char vga_misc_read(void);
  35void vga_misc_write(unsigned char value);
  36void vga_misc_mask(unsigned char value, unsigned char mask);
  37
  38/* Sequencer registers. */
  39unsigned char vga_sr_read(unsigned char index);
  40void vga_sr_write(unsigned char index, unsigned char value);
  41void vga_sr_mask(unsigned char index, unsigned char value, unsigned char mask);
  42
  43/* CR registers. */
  44unsigned char vga_cr_read(unsigned char index);
  45void vga_cr_write(unsigned char index, unsigned char value);
  46void vga_cr_mask(unsigned char index, unsigned char value, unsigned char mask);
  47
  48/* Attribute registers. */
  49unsigned char vga_ar_read(unsigned char index);
  50void vga_ar_write(unsigned char index, unsigned char value);
  51void vga_ar_mask(unsigned char index, unsigned char value, unsigned char mask);
  52
  53/* Graphics registers. */
  54unsigned char vga_gr_read(unsigned char index);
  55void vga_gr_write(unsigned char index, unsigned char value);
  56void vga_gr_mask(unsigned char index, unsigned char value, unsigned char mask);
  57
  58/* DAC functions. */
  59void vga_palette_enable(void);
  60void vga_palette_disable(void);
  61unsigned char vga_dac_mask_read(void);
  62void vga_dac_mask_write(unsigned char mask);
  63void vga_dac_read_address(unsigned char address);
  64void vga_dac_write_address(unsigned char address);
  65unsigned char vga_dac_data_read(void);
  66void vga_dac_data_write(unsigned char data);
  67
  68#endif /* VGA_IO_H */
  69