/*      $NetBSD: kb_ap.c,v 1.14 2021/08/07 16:19:01 thorpej Exp $       */

/*-
 * 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: kb_ap.c,v 1.14 2021/08/07 16:19:01 thorpej Exp $");

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

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wskbdvar.h>
#include <dev/wscons/wsksymdef.h>

#include <machine/adrsmap.h>
#include <machine/cpu.h>
#include <newsmips/apbus/apbusvar.h>

struct kbreg {
        volatile uint32_t kb_rx_data;
        volatile uint32_t kb_rx_stat;
        volatile uint32_t kb_rx_intr_en;
        volatile uint32_t kb_rx_reset;
        volatile uint32_t kb_rx_speed;

        volatile uint32_t ms_rx_data;
        volatile uint32_t ms_rx_stat;
        volatile uint32_t ms_rx_intr_en;
        volatile uint32_t ms_rx_reset;
        volatile uint32_t ms_rx_speed;

        volatile uint32_t kb_buzzf;
        volatile uint32_t kb_buzz;

        volatile uint32_t kb_tx_data;
        volatile uint32_t kb_tx_stat;
        volatile uint32_t kb_tx_intr_en;
        volatile uint32_t kb_tx_reset;
        volatile uint32_t kb_tx_speed;
};

struct kb_ap_softc {
        device_t sc_dev;
        struct kbreg *sc_reg;
        device_t sc_wskbddev;
};

int kb_ap_match(device_t, cfdata_t, void *);
void kb_ap_attach(device_t, device_t, void *);
int kb_ap_intr(void *);

void kb_ap_cnattach(void);
void kb_ap_cngetc(void *, u_int *, int *);
void kb_ap_cnpollc(void *, int);

int kb_ap_enable(void *, int);
void kb_ap_setleds(void *, int);
int kb_ap_ioctl(void *, u_long, void *, int, struct lwp *);

extern struct wscons_keydesc newskb_keydesctab[];

CFATTACH_DECL_NEW(kb_ap, sizeof(struct kb_ap_softc),
    kb_ap_match, kb_ap_attach, NULL, NULL);

struct wskbd_accessops kb_ap_accessops = {
        kb_ap_enable,
        kb_ap_setleds,
        kb_ap_ioctl,
};

struct wskbd_consops kb_ap_consops = {
        kb_ap_cngetc,
        kb_ap_cnpollc,
};

struct wskbd_mapdata kb_ap_keymapdata = {
        newskb_keydesctab,
        KB_JP,
};

int
kb_ap_match(device_t parent, cfdata_t cf, void *aux)
{
        struct apbus_attach_args *apa = aux;

        if (strcmp(apa->apa_name, "kb") == 0)
                return 1;

        return 0;
}

void
kb_ap_attach(device_t parent, device_t self, void *aux)
{
        struct kb_ap_softc *sc = device_private(self);
        struct apbus_attach_args *apa = aux;
        struct kbreg *reg = (void *)apa->apa_hwbase;
        volatile uint32_t *dipsw = (void *)NEWS5000_DIP_SWITCH;
        struct wskbddev_attach_args waa;
        int cons = 0;

        sc->sc_dev = self;
        aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);

        sc->sc_reg = reg;

        if (systype == NEWS5000 && *dipsw & 7) {
                aprint_normal(" (console)");
                cons = 1;
        }
        aprint_normal("\n");

        reg->kb_rx_reset = 0x03;
        reg->kb_tx_reset = 0x03;

        reg->kb_rx_speed = 0x04;
        reg->kb_tx_speed = 0x04;

        reg->kb_rx_intr_en = 1;
        reg->kb_tx_intr_en = 0;

        apbus_intr_establish(1, NEWS5000_INT1_KBD, 0, kb_ap_intr, sc,
            device_xname(self), apa->apa_ctlnum);

        waa.console = cons;
        waa.keymap = &kb_ap_keymapdata;
        waa.accessops = &kb_ap_accessops;
        waa.accesscookie = sc;

        sc->sc_wskbddev = config_found(self, &waa, wskbddevprint, CFARGS_NONE);
}

int
kb_ap_intr(void *v)
{
        struct kb_ap_softc *sc = v;
        struct kbreg *reg = sc->sc_reg;
        int key, val, type, release;
        int rv = 0;

        while (reg->kb_rx_stat & RX_KBRDY) {
                key = reg->kb_rx_data;
                val = key & 0x7f;
                release = key & 0x80;
                type = release ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;

                if (sc->sc_wskbddev)
                        wskbd_input(sc->sc_wskbddev, type, val);

                rv = 1;
        }

        return rv;
}

void
kb_ap_cnattach(void)
{

        wskbd_cnattach(&kb_ap_consops, (void *)0xbf900000, &kb_ap_keymapdata);
}

void
kb_ap_cngetc(void *v, u_int *type, int *data)
{
        struct kbreg *reg = v;
        int key, release, ointr;

        /* Disable keyboard interrupt. */
        ointr = reg->kb_rx_intr_en;
        reg->kb_rx_intr_en = 0;

        /* Wait for key data. */
        while ((reg->kb_rx_stat & RX_KBRDY) == 0)
                ;

        key = reg->kb_rx_data;
        release = key & 0x80;
        *data = key & 0x7f;
        *type = release ? WSCONS_EVENT_KEY_UP : WSCONS_EVENT_KEY_DOWN;

        reg->kb_rx_intr_en = ointr;
}

void
kb_ap_cnpollc(void *v, int on)
{
}

int
kb_ap_enable(void *v, int on)
{

        return 0;
}

void
kb_ap_setleds(void *v, int on)
{
}

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

        switch (cmd) {
        case WSKBDIO_GTYPE:
                *(int *)data = 0;       /* XXX */
                return 0;
        case WSKBDIO_SETLEDS:
                return 0;
        case WSKBDIO_GETLEDS:
                *(int *)data = 0;
                return 0;
        }

        return EPASSTHROUGH;
}