/*      $NetBSD: sunms.c,v 1.35 2021/08/07 16:19:16 thorpej Exp $       */

/*
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Lawrence Berkeley Laboratory.
 *
 * 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.
 *
 *      @(#)ms.c        8.1 (Berkeley) 6/11/93
 */

/*
 * Mouse driver (/dev/mouse)
 */

/*
 * Zilog Z8530 Dual UART driver (mouse interface)
 *
 * This is the "slave" driver that will be attached to
 * the "zsc" driver for a Sun mouse.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sunms.c,v 1.35 2021/08/07 16:19:16 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/time.h>
#include <sys/select.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/tty.h>

#include <machine/vuid_event.h>

#include <dev/sun/event_var.h>
#include <dev/sun/msvar.h>
#include <dev/sun/kbd_ms_ttyvar.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>

#include "ms.h"
#include "wsmouse.h"
#if NMS > 0

#ifdef SUN_MS_BPS
int     sunms_bps = SUN_MS_BPS;
#else
int     sunms_bps = MS_DEFAULT_BPS;
#endif

static int      sunms_match(device_t, cfdata_t, void *);
static void     sunms_attach(device_t, device_t, void *);
static int      sunmsiopen(device_t, int mode);
int     sunmsinput(int, struct tty *);

CFATTACH_DECL_NEW(ms_tty, sizeof(struct ms_softc),
    sunms_match, sunms_attach, NULL, NULL);

struct linesw sunms_disc = {
        .l_name = "sunms",
        .l_open = ttylopen,
        .l_close = ttylclose,
        .l_read = ttyerrio,
        .l_write = ttyerrio,
        .l_ioctl = ttynullioctl,
        .l_rint = sunmsinput,
        .l_start = ttstart,
        .l_modem = nullmodem,
        .l_poll = ttpoll
};

int     sunms_enable(void *);
int     sunms_ioctl(void *, u_long, void *, int, struct lwp *);
void    sunms_disable(void *);

const struct wsmouse_accessops  sunms_accessops = {
        sunms_enable,
        sunms_ioctl,
        sunms_disable,
};

/*
 * ms_match: how is this zs channel configured?
 */
int
sunms_match(device_t parent, cfdata_t cf, void *aux)
{
        struct kbd_ms_tty_attach_args *args = aux;

        if (sunms_bps == 0)
                return 0;

        if (strcmp(args->kmta_name, "mouse") == 0)
                return (1);

        return 0;
}

void
sunms_attach(device_t parent, device_t self, void *aux)
{
        struct ms_softc *ms = device_private(self);
        struct kbd_ms_tty_attach_args *args = aux;
        struct tty *tp = args->kmta_tp;
#if NWSMOUSE > 0
        struct wsmousedev_attach_args a;
#endif

        ms->ms_dev = self;
        tp->t_sc  = ms;
        tp->t_dev = args->kmta_dev;
        ms->ms_priv = tp;
        ms->ms_deviopen = sunmsiopen;
        ms->ms_deviclose = NULL;

        aprint_normal("\n");

        /* Initialize the speed, etc. */
        if (ttyldisc_attach(&sunms_disc) != 0)
                panic("sunms_attach: sunms_disc");
        ttyldisc_release(tp->t_linesw);
        tp->t_linesw = ttyldisc_lookup(sunms_disc.l_name);
        KASSERT(tp->t_linesw == &sunms_disc);
        tp->t_oflag &= ~OPOST;
        SET(tp->t_state, TS_KERN_ONLY);

        /* Initialize translator. */
        ms->ms_byteno = -1;

#if NWSMOUSE > 0
        /*
         * attach wsmouse
         */
        a.accessops = &sunms_accessops;
        a.accesscookie = ms;

        ms->ms_wsmousedev = config_found(self, &a, wsmousedevprint, CFARGS_NONE);
#endif
}

/*
 * Internal open routine.  This really should be inside com.c
 * But I'm putting it here until we have a generic internal open
 * mechanism.
 */
int
sunmsiopen(device_t dev, int flags)
{
        struct ms_softc *ms = device_private(dev);
        struct tty *tp = ms->ms_priv;
        struct lwp *l = curlwp ? curlwp : &lwp0;
        struct termios t;
        int error;

        /* Open the lower device */
        CLR(tp->t_state, TS_KERN_ONLY);
        if ((error = cdev_open(tp->t_dev, O_NONBLOCK|flags,
                                     0/* ignored? */, l)) != 0)
                return (error);

        /* Now configure it for the console. */
        tp->t_ospeed = 0;
        t.c_ispeed = sunms_bps;
        t.c_ospeed = sunms_bps;
        t.c_cflag =  CLOCAL|CS8;
        (*tp->t_param)(tp, &t);
        SET(tp->t_state, TS_KERN_ONLY);

        return (0);
}

int
sunmsinput(int c, struct tty *tp)
{
        struct ms_softc *ms = tp->t_sc;

        if (c & TTY_ERRORMASK) c = -1;
        else c &= TTY_CHARMASK;

        /* Pass this up to the "middle" layer. */
        ms_input(ms, c);
        return (0);
}

int
sunms_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{
/*      struct ms_softc *sc = v; */

        switch (cmd) {
        case WSMOUSEIO_GTYPE:
                *(u_int *)data = WSMOUSE_TYPE_PS2; /* XXX  */
                break;

        default:
                return (EPASSTHROUGH);
        }
        return (0);
}

int
sunms_enable(void *v)
{
        struct ms_softc *ms = v;
        int err;
        int s;

        if (ms->ms_ready)
                return EBUSY;

        err = sunmsiopen(ms->ms_dev, 0);
        if (err)
                return err;

        s = spltty();
        ms->ms_ready = 2;
        splx(s);

        return 0;
}

void
sunms_disable(void *v)
{
        struct ms_softc *ms = v;
        int s;

        s = spltty();
        ms->ms_ready = 0;
        splx(s);
}
#endif