/*      $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