/*      $NetBSD: dvbox.c,v 1.5 2025/05/27 18:44:31 tsutsui Exp $        */
/*      $OpenBSD: dvbox.c,v 1.13 2006/08/11 18:33:13 miod Exp $ */

/*
 * Copyright (c) 2005, Miodrag Vallat
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 */
/*-
 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*
 * 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 $Hdr: grf_dv.c 1.12 93/08/13$
 *
 *      @(#)grf_dv.c    8.4 (Berkeley) 1/12/94
 */

/*
 * Graphics routines for the DaVinci, HP98730/98731 Graphics system.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/ioctl.h>
#include <sys/bus.h>
#include <sys/cpu.h>

#include <machine/autoconf.h>

#include <hp300/dev/dioreg.h>
#include <hp300/dev/diovar.h>
#include <hp300/dev/diodevs.h>
#include <hp300/dev/intiovar.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>

#include <hp300/dev/diofbreg.h>
#include <hp300/dev/diofbvar.h>
#include <hp300/dev/dvboxreg.h>

struct  dvbox_softc {
        device_t        sc_dev;
        struct diofb    *sc_fb;
        struct diofb    sc_fb_store;
        int             sc_scode;
};

static int      dvbox_dio_match(device_t, cfdata_t, void *);
static void     dvbox_dio_attach(device_t, device_t, void *);
static int      dvbox_intio_match(device_t, cfdata_t, void *);
static void     dvbox_intio_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(dvbox_dio, sizeof(struct dvbox_softc),
    dvbox_dio_match, dvbox_dio_attach, NULL, NULL);

CFATTACH_DECL_NEW(dvbox_intio, sizeof(struct dvbox_softc),
    dvbox_intio_match, dvbox_intio_attach, NULL, NULL);

static int      dvbox_reset(struct diofb *, int, struct diofbreg *);
static void     dvbox_restore(struct diofb *);
static int      dvbox_windowmove(struct diofb *, uint16_t, uint16_t, uint16_t,
                    uint16_t, uint16_t, uint16_t, int16_t, int16_t);

static int      dvbox_ioctl(void *, void *, u_long, void *, int, struct lwp *);

static struct wsdisplay_accessops dvbox_accessops = {
        .ioctl        = dvbox_ioctl,
        .mmap         = diofb_mmap,
        .alloc_screen = diofb_alloc_screen,
        .free_screen  = diofb_free_screen,
        .show_screen  = diofb_show_screen,
        .load_font    = NULL,
};

/*
 * Attachment glue
 */

int
dvbox_intio_match(device_t parent, cfdata_t cf, void *aux)
{
        struct intio_attach_args *ia = aux;
        struct diofbreg *fbr;

        if (strcmp("fb", ia->ia_modname) != 0)
                return 0;

        fbr = (struct diofbreg *)ia->ia_addr;

        if (badaddr((void *)fbr))
                return 0;

        if (fbr->id == GRFHWID && fbr->fbid == GID_DAVINCI) {
                return 1;
        }

        return 0;
}

void
dvbox_intio_attach(device_t parent, device_t self, void *aux)
{
        struct dvbox_softc *sc = device_private(self);
        struct intio_attach_args *ia = aux;
        struct diofbreg *fbr;

        sc->sc_dev = self;
        fbr = (struct diofbreg *)ia->ia_addr;
        sc->sc_scode = CONSCODE_INTERNAL;

        if (sc->sc_scode == conscode) {
                sc->sc_fb = &diofb_cn;
        } else {
                sc->sc_fb = &sc->sc_fb_store;
                dvbox_reset(sc->sc_fb, sc->sc_scode, fbr);
        }

        diofb_end_attach(self, &dvbox_accessops, sc->sc_fb,
            sc->sc_scode == conscode, NULL);
}

int
dvbox_dio_match(device_t parent, cfdata_t cf, void *aux)
{
        struct dio_attach_args *da = aux;

        if (da->da_id == DIO_DEVICE_ID_FRAMEBUFFER &&
            da->da_secid == DIO_DEVICE_SECID_DAVINCI)
                return 1;

        return 0;
}

void
dvbox_dio_attach(device_t parent, device_t self, void *aux)
{
        struct dvbox_softc *sc = device_private(self);
        struct dio_attach_args *da = aux;
        bus_space_handle_t bsh;
        struct diofbreg *fbr;

        sc->sc_dev = self;
        sc->sc_scode = da->da_scode;
        if (sc->sc_scode == conscode) {
                fbr = (struct diofbreg *)conaddr;       /* already mapped */
                sc->sc_fb = &diofb_cn;
        } else {
                sc->sc_fb = &sc->sc_fb_store;
                if (bus_space_map(da->da_bst, da->da_addr, da->da_size, 0,
                    &bsh)) {
                        aprint_error(": can't map framebuffer\n");
                        return;
                }
                fbr = bus_space_vaddr(da->da_bst, bsh);
                if (dvbox_reset(sc->sc_fb, sc->sc_scode, fbr) != 0) {
                        aprint_error(": can't reset framebuffer\n");
                        return;
                }
        }

        diofb_end_attach(self, &dvbox_accessops, sc->sc_fb,
            sc->sc_scode == conscode, NULL);
}

/*
 * Initialize hardware and display routines.
 */
int
dvbox_reset(struct diofb *fb, int scode, struct diofbreg *fbr)
{
        int rc;

        if ((rc = diofb_fbinquire(fb, scode, fbr)) != 0)
                return rc;

        /*
         * Restrict the framebuffer to a monochrome view for now, until
         * I know better how to detect and frob overlay planes, and
         * setup a proper colormap. -- miod
         */
        fb->planes = fb->planemask = 1;

        fb->bmv = dvbox_windowmove;
        dvbox_restore(fb);
        diofb_fbsetup(fb);

        return 0;
}

/*
 * Magic initialization code.
 */
void
dvbox_restore(struct diofb *fb)
{
        volatile struct dvboxfb *db = (struct dvboxfb *)fb->regkva;
        u_int i;

        db->regs.id = 0x80;
        DELAY(100);

        db->regs.interrupt = 0x04;
        db->en_scan = 0x01;
        db->fbwen = ~0;
        db->opwen = ~0;
        db->fold = 0x01;        /* 8bpp */
        db->drive = 0x01;       /* use FB plane */
        db->rep_rule = DVBOX_DUALROP(RR_COPY);
        db->alt_rr = DVBOX_DUALROP(RR_COPY);
        db->zrr = DVBOX_DUALROP(RR_COPY);

        db->fbvenp = 0xFF;      /* enable video */
        db->dispen = 0x01;      /* enable display */
        db->fbvens = 0x0;
        db->fv_trig = 0x01;
        DELAY(100);
        db->vdrive = 0x0;
        db->zconfig = 0x0;

        while (db->wbusy & 0x01)
                DELAY(10);

        db->cmapbank = 0;

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

        db->panxh = 0;
        db->panxl = 0;
        db->panyh = 0;
        db->panyl = 0;
        db->zoom = 0;
        db->cdwidth = 0x50;
        db->chstart = 0x52;
        db->cvwidth = 0x22;
        db->pz_trig = 1;

        /*
         * 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.
         */
        db->regs.interrupt = 0x04;
        db->drive = 0x10;
        db->rep_rule = DVBOX_DUALROP(RR_COPY);
        db->opwen = 0x01;
        db->fbwen = 0x0;
        db->fold = 0x01;
        db->vdrive = 0x0;
        db->dispen = 0x01;

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

        /*
         * Make sure that overlay planes override frame buffer planes.
         */
        db->ovly0p = 0x0;
        db->ovly0s = 0x0;
        db->ovly1p = 0x0;
        db->ovly1s = 0x0;
        db->fv_trig = 0x1;
        DELAY(100);

        /*
         * Setup the overlay colormaps. Need to set the 0,1 (black/white)
         * color for both banks.
         */
        db_waitbusy(db);
        for (i = 0; i <= 1; i++) {
                db->cmapbank = i;
                db->rgb[0].red = 0x00;
                db->rgb[0].green = 0x00;
                db->rgb[0].blue = 0x00;
                db->rgb[1].red = 0xff;
                db->rgb[1].green = 0xff;
                db->rgb[1].blue = 0xff;
        }
        db->cmapbank = 0;
        db_waitbusy(db);
}

int
dvbox_ioctl(void *v, void *vs, u_long cmd, void *data, int flags, struct lwp *l)
{
        struct diofb *fb = v;
        struct wsdisplay_fbinfo *wdf;

        switch (cmd) {
        case WSDISPLAYIO_GTYPE:
                *(u_int *)data = WSDISPLAY_TYPE_DVBOX;
                return 0;
        case WSDISPLAYIO_SMODE:
                fb->mapmode = *(u_int *)data;
                if (fb->mapmode == WSDISPLAYIO_MODE_EMUL)
                        dvbox_restore(fb);
                return 0;
        case WSDISPLAYIO_GINFO:
                wdf = (void *)data;
                wdf->width = fb->ri.ri_width;
                wdf->height = fb->ri.ri_height;
                wdf->depth = fb->ri.ri_depth;
                wdf->cmsize = 0;        /* XXX */
                return 0;
        case WSDISPLAYIO_LINEBYTES:
                *(u_int *)data = fb->ri.ri_stride;
                return 0;
        case WSDISPLAYIO_GETCMAP:
        case WSDISPLAYIO_PUTCMAP:
                /* XXX until color support is implemented */
                return EPASSTHROUGH;
        case WSDISPLAYIO_GVIDEO:
        case WSDISPLAYIO_SVIDEO:
                return EPASSTHROUGH;
        }

        return EPASSTHROUGH;
}

int
dvbox_windowmove(struct diofb *fb, uint16_t sx, uint16_t sy,
    uint16_t dx, uint16_t dy, uint16_t cx, uint16_t cy, int16_t rop,
    int16_t planemask)
{
        volatile struct dvboxfb *db = (struct dvboxfb *)fb->regkva;

        if (planemask != 0xff)
                return EINVAL;

        db_waitbusy(db);

        db->rep_rule = DVBOX_DUALROP(rop);
        db->source_y = sy;
        db->source_x = sx;
        db->dest_y = dy;
        db->dest_x = dx;
        db->wheight = cy;
        db->wwidth = cx;
        db->wmove = 1;

        db_waitbusy(db);

        return 0;
}

/*
 * DaVinci console support
 */

int
dvboxcnattach(bus_space_tag_t bst, bus_addr_t addr, int scode)
{
        bus_space_handle_t bsh;
        void *va;
        struct diofbreg *fbr;
        struct diofb *fb = &diofb_cn;
        int size;

        if (bus_space_map(bst, addr, PAGE_SIZE, 0, &bsh))
                return 1;
        va = bus_space_vaddr(bst, bsh);
        fbr = va;

        if (badaddr(va) ||
            (fbr->id != GRFHWID) || (fbr->fbid != GID_DAVINCI)) {
                bus_space_unmap(bst, bsh, PAGE_SIZE);
                return 1;
        }

        size = DIO_SIZE(scode, va);

        bus_space_unmap(bst, bsh, PAGE_SIZE);
        if (bus_space_map(bst, addr, size, 0, &bsh))
                return 1;
        va = bus_space_vaddr(bst, bsh);

        /*
         * Initialize the framebuffer hardware.
         */
        conscode = scode;
        conaddr = va;
        dvbox_reset(fb, conscode, (struct diofbreg *)conaddr);

        /*
         * Initialize the terminal emulator.
         */
        diofb_cnattach(fb);
        return 0;
}