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ite_gb.c revision 1.11 
      1 /*	$NetBSD: ite_gb.c,v 1.11 2025/05/27 18:02:58 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 University of Utah.
      5  * Copyright (c) 1990, 1993
      6  *	The Regents of the University of California.  All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * the Systems Programming Group of the University of Utah Computer
     10  * Science Department.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted provided that the following conditions
     14  * are met:
     15  * 1. Redistributions of source code must retain the above copyright
     16  *    notice, this list of conditions and the following disclaimer.
     17  * 2. Redistributions in binary form must reproduce the above copyright
     18  *    notice, this list of conditions and the following disclaimer in the
     19  *    documentation and/or other materials provided with the distribution.
     20  * 3. Neither the name of the University nor the names of its contributors
     21  *    may be used to endorse or promote products derived from this software
     22  *    without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     34  * SUCH DAMAGE.
     35  *
     36  * from: Utah $Hdr: ite_gb.c 1.9 92/01/20$
     37  *
     38  *	@(#)ite_gb.c	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 #ifdef ITECONSOLE
     42 
     43 #include <sys/param.h>
     44 
     45 #include <hp300/stand/common/itereg.h>
     46 #include <hp300/stand/common/grf_gbreg.h>
     47 
     48 #include <hp300/stand/common/samachdep.h>
     49 #include <hp300/stand/common/itevar.h>
     50 
     51 static void gbox_windowmove(struct ite_data *, int, int, int, int,
     52     int, int, int);
     53 
     54 void
     55 gbox_init(struct ite_data *ip)
     56 {
     57 	struct gboxfb *regbase = (void *)ip->regbase;
     58 
     59 	ip->bmv = gbox_windowmove;
     60 
     61 	regbase->write_protect = 0x0;
     62 	regbase->interrupt = 0x4;
     63 	regbase->rep_rule = RR_COPY;
     64 	regbase->blink1 = 0xff;
     65 	regbase->blink2 = 0xff;
     66 	regbase->sec_interrupt = 0x01;
     67 
     68 	/*
     69 	 * Set up the color map entries. We use three entries in the
     70 	 * color map. The first, is for black, the second is for
     71 	 * white, and the very last entry is for the inverted cursor.
     72 	 */
     73 	regbase->creg_select = 0x00;
     74 	regbase->cmap_red    = 0x00;
     75 	regbase->cmap_grn    = 0x00;
     76 	regbase->cmap_blu    = 0x00;
     77 	regbase->cmap_write  = 0x00;
     78 	gbcm_waitbusy(regbase);
     79 
     80 	regbase->creg_select = 0x01;
     81 	regbase->cmap_red    = 0xFF;
     82 	regbase->cmap_grn    = 0xFF;
     83 	regbase->cmap_blu    = 0xFF;
     84 	regbase->cmap_write  = 0x01;
     85 	gbcm_waitbusy(regbase);
     86 
     87 	regbase->creg_select = 0xFF;
     88 	regbase->cmap_red    = 0xFF;
     89 	regbase->cmap_grn    = 0xFF;
     90 	regbase->cmap_blu    = 0xFF;
     91 	regbase->cmap_write  = 0x01;
     92 	gbcm_waitbusy(regbase);
     93 
     94 	ite_fontinfo(ip);
     95 	ite_fontinit8bpp(ip);
     96 
     97 	/*
     98 	 * Clear the display. This used to be before the font unpacking
     99 	 * but it crashes. Figure it out later.
    100 	 */
    101 	gbox_windowmove(ip, 0, 0, 0, 0, ip->dheight, ip->dwidth, RR_CLEAR);
    102 	tile_mover_waitbusy(regbase);
    103 
    104 	/*
    105 	 * Stash the inverted cursor.
    106 	 */
    107 	gbox_windowmove(ip, charY(ip, ' '), charX(ip, ' '),
    108 			ip->cblanky, ip->cblankx, ip->ftheight,
    109 			ip->ftwidth, RR_COPYINVERTED);
    110 }
    111 
    112 void
    113 gbox_scroll(struct ite_data *ip)
    114 {
    115 	struct gboxfb *regbase = (void *)ip->regbase;
    116 
    117 	tile_mover_waitbusy(regbase);
    118 	regbase->write_protect = 0x0;
    119 
    120 	ite_dio_scroll(ip);
    121 }
    122 
    123 static void
    124 gbox_windowmove(struct ite_data *ip, int sy, int sx, int dy, int dx, int h,
    125     int w, int mask)
    126 {
    127 	struct gboxfb *regbase = (void *)ip->regbase;
    128 	int src, dest;
    129 
    130 	src  = (sy * 1024) + sx;	/* upper left corner in pixels */
    131 	dest = (dy * 1024) + dx;
    132 
    133 	tile_mover_waitbusy(regbase);
    134 	regbase->width = -(w / 4);
    135 	regbase->height = -(h / 4);
    136 	if (src < dest)
    137 		regbase->rep_rule = MOVE_DOWN_RIGHT|mask;
    138 	else {
    139 		regbase->rep_rule = MOVE_UP_LEFT|mask;
    140 		/*
    141 		 * Adjust to top of lower right tile of the block.
    142 		 */
    143 		src = src + ((h - 4) * 1024) + (w - 4);
    144 		dest= dest + ((h - 4) * 1024) + (w - 4);
    145 	}
    146 	FBBASE[dest] = FBBASE[src];
    147 }
    148 #endif
    149