/*      $NetBSD: gfttyvar.h,v 1.2 2024/01/06 17:52:43 thorpej Exp $     */

/*-     
 * Copyright (c) 2023 The NetBSD Foundation, Inc.
 * All rights reserved.
 *              
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jason R. Thorpe.
 *      
 * 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 _DEV_GOLDFISH_GFTTYVAR_H_
#define _DEV_GOLDFISH_GFTTYVAR_H_

#include <sys/bus.h>
#include <sys/mutex.h>
#include <sys/tty.h>

struct gftty_config {
        bus_space_tag_t         c_bst;
        bus_space_handle_t      c_bsh;
        uint32_t                c_version;
};

struct gftty_softc {
        device_t                sc_dev;
        struct gftty_config     *sc_config;

        void                    *sc_ih;
        void                    *sc_rx_si;

        bus_dma_tag_t           sc_dmat;
        bus_dmamap_t            sc_tx_dma;
        bus_dmamap_t            sc_rx_dma;

        kmutex_t                sc_hwlock;      /* locks DMA pointer */

        struct tty              *sc_tty;
        char                    *sc_rxbufs[2];
        bus_addr_t              sc_rxaddrs[2];
        char                    *sc_rxbuf;      /* tty lock */
        bus_addr_t              sc_rxaddr;      /* tty lock */
        int                     sc_rxpos;       /* tty lock */
        int                     sc_rxcur;       /* tty lock */
};

void    gftty_attach(struct gftty_softc *sc);
bool    gftty_is_console(struct gftty_softc *sc);
void    gftty_alloc_config(struct gftty_softc *sc, bus_space_tag_t,
            bus_space_handle_t);
int     gftty_intr(void *);
void    gftty_cnattach(bus_space_tag_t, bus_space_handle_t);

#endif /* _DEV_GOLDFISH_GFTTYVAR_H_ */