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      1 /*	$NetBSD: grfabs_fal.h,v 1.6 2023/01/06 10:28:28 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Thomas Gerner.
      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 #ifndef _GRFABS_FAL_H
     29 #define _GRFABS_FAL_H
     30 /*
     31  * Struct to hold the values for the different video modes
     32  */
     33 struct videl {
     34     u_short video_mode;		/* video mode			    */
     35     u_char  vd_syncmode;	/* Syncronisation		    */
     36     u_short vd_line_wide;	/* Falcon line word distance        */
     37     u_short vd_vert_wrap;	/* Falcon line length		    */
     38     u_char  vd_st_res;		/* ST resolution		    */
     39     u_short vd_fal_res;		/* Falcon resolution		    */
     40     u_short vd_h_hold_tim;	/* Falcon horizontal hold timer     */
     41     u_short vd_h_bord_beg;	/* Falcon horizontal border begin   */
     42     u_short vd_h_bord_end;	/* Falcon horizontal border end     */
     43     u_short vd_h_dis_beg;	/* Falcon horizontal display begin  */
     44     u_short vd_h_dis_end;	/* Falcon horizontal display end    */
     45     u_short vd_h_ss;		/* Falcon horizontal SS             */
     46     u_short vd_h_fs;		/* Falcon horizontal FS		    */
     47     u_short vd_h_hh;		/* Falcon horizontal HH		    */
     48     u_short vd_v_freq_tim;	/* Falcon vertical frequency timer  */
     49     u_short vd_v_bord_beg;	/* Falcon vertical border begin     */
     50     u_short vd_v_bord_end;	/* Falcon vertical border end       */
     51     u_short vd_v_dis_beg;	/* Falcon vertical display begin    */
     52     u_short vd_v_dis_end;	/* Falcon vertical display end      */
     53     u_short vd_v_ss;		/* Falcon vertical SS               */
     54     u_short vd_fal_ctrl;	/* Falcon video control		    */
     55     u_short vd_fal_mode;	/* Falcon video mode	            */
     56 };
     57 
     58 
     59 /*
     60  * Colormap related macro's
     61  */
     62 #define CM_L2FAL(v) \
     63     (((0x003f0000 & (v)) << 10) | ((0x00003f00 & (v)) << 10) |\
     64       (0x0000003f & (v)) << 2)
     65 #define CM_FAL2L(v) \
     66     (((((0xfc000000 & (v)) >> 10) * 0xff / 0x3f) & 0x00ff0000) |\
     67      ((((0x00fc0000 & (v)) >> 10) * 0xff / 0x3f) & 0x0000ff00) |\
     68        ((0x000000fc & (v)) >>  2) * 0xff / 0x3f)
     69 #define CM_L2ST(v) \
     70     (((0x000e0000 & (v)) >> 9) | ((0x00000e00 & (v)) >> 5) |\
     71       (0x0000000e & (v)) >> 1)
     72 #define CM_ST2L(v) \
     73     (((((0x00000700 & (v)) * 0xff / 0x7) << 8) & 0x00ff0000) |\
     74      ((((0x00000070 & (v)) * 0xff / 0x7) << 4) & 0x0000ff00) |\
     75         (0x00000007 & (v)) * 0xff / 0x7)
     76 
     77 void falcon_probe_video(MODES *);
     78 #endif /*  _GRFABS_FAL_H */
     79