/*      $NetBSD: ite_gb.c,v 1.11 2025/05/27 18:02:58 tsutsui Exp $      */

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: ite_gb.c 1.9 92/01/20$
*
*      @(#)ite_gb.c    8.1 (Berkeley) 6/10/93
*/

#ifdef ITECONSOLE

#include <sys/param.h>

#include <hp300/stand/common/itereg.h>
#include <hp300/stand/common/grf_gbreg.h>

#include <hp300/stand/common/samachdep.h>
#include <hp300/stand/common/itevar.h>

static void gbox_windowmove(struct ite_data *, int, int, int, int,
   int, int, int);

void
gbox_init(struct ite_data *ip)
{
       struct gboxfb *regbase = (void *)ip->regbase;

       ip->bmv = gbox_windowmove;

       regbase->write_protect = 0x0;
       regbase->interrupt = 0x4;
       regbase->rep_rule = RR_COPY;
       regbase->blink1 = 0xff;
       regbase->blink2 = 0xff;
       regbase->sec_interrupt = 0x01;

       /*
        * Set up the color map entries. We use three entries in the
        * color map. The first, is for black, the second is for
        * white, and the very last entry is for the inverted cursor.
        */
       regbase->creg_select = 0x00;
       regbase->cmap_red    = 0x00;
       regbase->cmap_grn    = 0x00;
       regbase->cmap_blu    = 0x00;
       regbase->cmap_write  = 0x00;
       gbcm_waitbusy(regbase);

       regbase->creg_select = 0x01;
       regbase->cmap_red    = 0xFF;
       regbase->cmap_grn    = 0xFF;
       regbase->cmap_blu    = 0xFF;
       regbase->cmap_write  = 0x01;
       gbcm_waitbusy(regbase);

       regbase->creg_select = 0xFF;
       regbase->cmap_red    = 0xFF;
       regbase->cmap_grn    = 0xFF;
       regbase->cmap_blu    = 0xFF;
       regbase->cmap_write  = 0x01;
       gbcm_waitbusy(regbase);

       ite_fontinfo(ip);
       ite_fontinit8bpp(ip);

       /*
        * Clear the display. This used to be before the font unpacking
        * but it crashes. Figure it out later.
        */
       gbox_windowmove(ip, 0, 0, 0, 0, ip->dheight, ip->dwidth, RR_CLEAR);
       tile_mover_waitbusy(regbase);

       /*
        * Stash the inverted cursor.
        */
       gbox_windowmove(ip, charY(ip, ' '), charX(ip, ' '),
                       ip->cblanky, ip->cblankx, ip->ftheight,
                       ip->ftwidth, RR_COPYINVERTED);
}

void
gbox_scroll(struct ite_data *ip)
{
       struct gboxfb *regbase = (void *)ip->regbase;

       tile_mover_waitbusy(regbase);
       regbase->write_protect = 0x0;

       ite_dio_scroll(ip);
}

static void
gbox_windowmove(struct ite_data *ip, int sy, int sx, int dy, int dx, int h,
   int w, int mask)
{
       struct gboxfb *regbase = (void *)ip->regbase;
       int src, dest;

       src  = (sy * 1024) + sx;        /* upper left corner in pixels */
       dest = (dy * 1024) + dx;

       tile_mover_waitbusy(regbase);
       regbase->width = -(w / 4);
       regbase->height = -(h / 4);
       if (src < dest)
               regbase->rep_rule = MOVE_DOWN_RIGHT|mask;
       else {
               regbase->rep_rule = MOVE_UP_LEFT|mask;
               /*
                * Adjust to top of lower right tile of the block.
                */
               src = src + ((h - 4) * 1024) + (w - 4);
               dest= dest + ((h - 4) * 1024) + (w - 4);
       }
       FBBASE[dest] = FBBASE[src];
}
#endif