/*      $NetBSD: ms_kbc.c,v 1.14 2021/08/07 16:19:00 thorpej Exp $      */

/*-
* Copyright (c) 2001 Izumi Tsutsui.  All rights reserved.
*
* 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) 2000 Tsubai Masanari.  All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ms_kbc.c,v 1.14 2021/08/07 16:19:00 thorpej Exp $");

#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>

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

#include <machine/cpu.h>
#include <machine/bus.h>

#include <news68k/dev/kbcreg.h>
#include <news68k/dev/kbcvar.h>
#include <news68k/dev/msvar.h>

#include <news68k/news68k/isr.h>

static int ms_kbc_match(device_t, cfdata_t, void *);
static void ms_kbc_attach(device_t, device_t, void *);
static void ms_kbc_init(struct ms_softc *);
int ms_kbc_intr(void *);

static int ms_kbc_enable(void *);
static void ms_kbc_disable(void *);
static int ms_kbc_ioctl(void *, u_long, void *, int, struct lwp *);

CFATTACH_DECL_NEW(ms_kbc, sizeof(struct ms_softc),
   ms_kbc_match, ms_kbc_attach, NULL, NULL);

struct wsmouse_accessops ms_kbc_accessops = {
       ms_kbc_enable,
       ms_kbc_ioctl,
       ms_kbc_disable
};

static int
ms_kbc_match(device_t parent, cfdata_t cf, void *aux)
{
       struct kbc_attach_args *ka = aux;

       if (strcmp(ka->ka_name, "ms"))
               return 0;

       return 1;
}

static void
ms_kbc_attach(device_t parent, device_t self, void *aux)
{
       struct ms_softc *sc = device_private(self);
       struct kbc_attach_args *ka = aux;
       struct wsmousedev_attach_args wsa;
       int ipl;

       sc->sc_dev = self;
       aprint_normal("\n");

       sc->sc_bt = ka->ka_bt;
       sc->sc_bh = ka->ka_bh;
       sc->sc_offset = KBC_MSREG_DATA;
       ipl = ka->ka_ipl;

       ms_kbc_init(sc);

       isrlink_autovec(ms_kbc_intr, (void *)sc, ipl, IPL_TTY);

       wsa.accessops = &ms_kbc_accessops;
       wsa.accesscookie = sc;
       sc->sc_wsmousedev = config_found(self, &wsa, wsmousedevprint,
           CFARGS_NONE);
}

static void
ms_kbc_init(struct ms_softc *sc)
{
       bus_space_tag_t bt = sc->sc_bt;
       bus_space_handle_t bh = sc->sc_bh;

       bus_space_write_1(bt, bh, KBC_MSREG_RESET, 0);
       bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);
}

int
ms_kbc_intr(void *v)
{
       struct ms_softc *sc = v;
       bus_space_tag_t bt = sc->sc_bt;
       bus_space_handle_t bh = sc->sc_bh;
       int handled = 0;

       while (bus_space_read_1(bt, bh, KBC_MSREG_STAT) & KBCSTAT_MSRDY) {
               ms_intr(sc);
               handled = 1;
       }
       if (handled)
               bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);

       return handled;
}

static int
ms_kbc_enable(void *v)
{
       struct ms_softc *sc = v;
       bus_space_tag_t bt = sc->sc_bt;
       bus_space_handle_t bh = sc->sc_bh;

       bus_space_write_1(bt, bh, KBC_MSREG_INTE, KBC_INTE);

       return 0;
}

static void
ms_kbc_disable(void *v)
{
       struct ms_softc *sc = v;
       bus_space_tag_t bt = sc->sc_bt;
       bus_space_handle_t bh = sc->sc_bh;

       bus_space_write_1(bt, bh, KBC_MSREG_INTE, 0);
}

static int
ms_kbc_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{

       return EPASSTHROUGH;
}