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      1 /*	$NetBSD: grfabs_et.h,v 1.4 2011/10/04 04:50:20 chs Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Leo Weppelman.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * Saved register-state of the ET4000
     30  */
     31 typedef struct {
     32 	u_char	misc_output;
     33 	u_char	crt[25];	/* Std. VGA crt registers	*/
     34 	u_char	attr[25];	/* Std. VGA attr. registers	*/
     35 	u_char	grf[9];		/* Std. VGA grf. registers	*/
     36 	u_char	seq[5];		/* Std. VGA seq. registers	*/
     37 
     38 	/* ET4000 extensions */
     39 	u_char	ext_start;	/* Extra Crt registers		*/
     40 	u_char	compat_6845;
     41 	u_char	overfl_high;
     42 	u_char	hor_overfl;
     43 	u_char	state_ctl;	/* Extra Seq. registers		*/
     44 	u_char	aux_mode;
     45 	u_char	seg_sel;	/* Extra general register	*/
     46 } et_sv_reg_t;
     47 
     48 typedef struct {
     49 	et_sv_reg_t	sv_regs;	/* saved card regs	*/
     50 	int		fb_size;	/* # of shorts in sv_fb	*/
     51 	u_short		sv_fb[1];	/* saved frame buffer	*/
     52 	/* actually longer... */
     53 } save_area_t;
     54 
     55 void	et_hwrest(et_sv_reg_t *);
     56 void	et_hwsave(et_sv_reg_t *);
     57 int	et_probe_card(void);
     58 void	et_probe_video(MODES *);
     59