/*      $NetBSD: ixp12x0_comvar.h,v 1.7 2012/10/27 17:17:39 chs Exp $        */
/*-
 * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
 *
 * 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.
 */

#ifndef _IXP12X0_COMVAR_H_
#define _IXP12X0_COMVAR_H_

/* Hardware flag masks */
#define COM_HW_NOIEN            0x01
#define COM_HW_DEV_OK           0x20
#define COM_HW_CONSOLE          0x40
#define COM_HW_KGDB             0x80

#define RX_TTY_BLOCKED          0x01
#define RX_TTY_OVERFLOWED       0x02
#define RX_IBUF_BLOCKED         0x04
#define RX_IBUF_OVERFLOWED      0x08
#define RX_ANY_BLOCK            0x0f

#define IXPCOM_RING_SIZE        2048

struct ixpcom_softc {
        device_t                sc_dev;
        bus_addr_t              sc_baseaddr;
        bus_space_tag_t         sc_iot;
        bus_space_handle_t      sc_ioh;

        void                    *sc_si;

        struct tty              *sc_tty;

        u_char                  *sc_rbuf, *sc_ebuf;

        u_char                  *sc_tba;
        u_int                   sc_tbc, sc_heldtbc;

        u_char                  *volatile sc_rbget,
                                *volatile sc_rbput;
        volatile u_int          sc_rbavail;

        /* status flags */
        int                     sc_hwflags, sc_swflags;

        volatile u_int          sc_rx_flags,
                                sc_tx_busy,
                                sc_tx_done,
                                sc_tx_stopped,
                                sc_st_check,
                                sc_rx_ready;
        volatile int            sc_heldchange;

        /* control registers */
        u_int                   sc_xie;
        u_int                   sc_rie;
        u_int                   sc_speed;

        /* power management hooks */
        int                     (*enable)(struct ixpcom_softc *);
        int                     (*disable)(struct ixpcom_softc *);

        int                     enabled;
};

extern struct ixpcom_softc* ixpcom_sc;

void    ixpcom_attach_subr(struct ixpcom_softc *);

int     ixpcomintr(void* arg);
int     ixpcomcnattach(bus_space_tag_t, bus_addr_t, bus_space_handle_t,
                       int, tcflag_t);

#endif /* _IXP12X0_COMVAR_H_ */