/*      $NetBSD: ite_dv.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 $Hdr: ite_dv.c 1.2 92/01/20$
*
*      @(#)ite_dv.c    8.1 (Berkeley) 6/10/93
*/

#ifdef ITECONSOLE

#include <sys/param.h>

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

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

static void dv_reset(struct dvboxfb *);
static void dvbox_windowmove(struct ite_data *, int, int, int, int,
   int, int, int);

void
dvbox_init(struct ite_data *ip)
{
       struct dvboxfb *regbase;
       int i;

       ip->bmv = dvbox_windowmove;
       regbase = (void *)ip->regbase;
       dv_reset(regbase);
       DELAY(4000);

       /*
        * Turn on frame buffer, turn on overlay planes, set replacement
        * rule, enable top overlay plane writes for ite, disable all frame
        * buffer planes, set byte per pixel, and display frame buffer 0.
        * Lastly, turn on the box.
        */
       regbase->interrupt = 0x04;
       regbase->drive     = 0x10;
       regbase->rep_rule  = RR_COPY << 4 | RR_COPY;
       regbase->opwen     = 0x01;
       regbase->fbwen     = 0x0;
       regbase->fold      = 0x01;
       regbase->vdrive    = 0x0;
       regbase->dispen    = 0x01;

       /*
        * Video enable top overlay plane.
        */
       regbase->opvenp = 0x01;
       regbase->opvens = 0x01;

       /*
        * Make sure that overlay planes override frame buffer planes.
        */
       regbase->ovly0p  = 0x0;
       regbase->ovly0s  = 0x0;
       regbase->ovly1p  = 0x0;
       regbase->ovly1s  = 0x0;
       regbase->fv_trig = 0x1;
       DELAY(400);

       /*
        * Setup the overlay colormaps. Need to set the 0,1 (black/white)
        * color for both banks.
        */

       for (i = 0; i <= 1; i++) {
               regbase->cmapbank = i;
               regbase->rgb[0].red   = 0x00;
               regbase->rgb[0].green = 0x00;
               regbase->rgb[0].blue  = 0x00;
               regbase->rgb[1].red   = 0xFF;
               regbase->rgb[1].green = 0xFF;
               regbase->rgb[1].blue  = 0xFF;
       }

       regbase->cmapbank = 0;

       db_waitbusy(regbase);

       ite_fontinfo(ip);
       ite_fontinit8bpp(ip);

       /*
        * Clear the (visible) framebuffer.
        */
       dvbox_windowmove(ip, 0, 0, 0, 0, ip->dheight, ip->dwidth, RR_CLEAR);
       db_waitbusy(regbase);

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

static void
dvbox_windowmove(struct ite_data *ip, int sy, int sx, int dy, int dx, int h,
   int w, int func)
{
       struct dvboxfb *dp = (void *)ip->regbase;

       if (h == 0 || w == 0)
               return;

       db_waitbusy(dp);
       dp->rep_rule = func << 4 | func;
       dp->source_y = sy;
       dp->source_x = sx;
       dp->dest_y   = dy;
       dp->dest_x   = dx;
       dp->wheight  = h;
       dp->wwidth   = w;
       dp->wmove    = 1;
}

static void
dv_reset(struct dvboxfb *dbp)
{

       dbp->reset = 0x80;
       DELAY(400);

       dbp->interrupt = 0x04;
       dbp->en_scan   = 0x01;
       dbp->fbwen     = ~0;
       dbp->opwen     = ~0;
       dbp->fold      = 0x01;
       dbp->drive     = 0x01;
       dbp->rep_rule  = 0x33;
       dbp->alt_rr    = 0x33;
       dbp->zrr       = 0x33;

       dbp->fbvenp    = 0xFF;
       dbp->dispen    = 0x01;
       dbp->fbvens    = 0x0;
       dbp->fv_trig   = 0x01;
       DELAY(400);
       dbp->vdrive    = 0x0;
       dbp->zconfig   = 0x0;

       while (dbp->wbusy & 0x01)
               DELAY(400);

       /*
        * Start of missing ROM code.
        */
       dbp->cmapbank = 0;

       dbp->red0   = 0;
       dbp->red1   = 0;
       dbp->green0 = 0;
       dbp->green1 = 0;
       dbp->blue0  = 0;
       dbp->blue1  = 0;

       dbp->panxh   = 0;
       dbp->panxl   = 0;
       dbp->panyh   = 0;
       dbp->panyl   = 0;
       dbp->zoom    = 0;
       dbp->cdwidth = 0x50;
       dbp->chstart = 0x52;
       dbp->cvwidth = 0x22;
       dbp->pz_trig = 1;
       /*
        * End of missing ROM code.
        */
}
#endif

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