/*      $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

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