/*      $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;
}

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