/*      $NetBSD: if_cemacvar.h,v 1.7 2024/10/15 00:58:15 lloyd Exp $    */
/*-
 * Copyright (c) 2015  Genetec Corporation.  All rights reserved.
 * Written by Hashimoto Kenichi for Genetec Corporation.
 *
 * 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 _IF_CEMACVAR_H_
#define _IF_CEMACVAR_H_

#include <net/if.h>
#include <net/if_media.h>
#include <net/if_ether.h>
#include <net/if_media.h>

#include <dev/mii/miivar.h>

#define RX_QLEN 64
#define TX_QLEN 2               /* I'm very sorry but that's where we can get */

struct cemac_qmeta {
        struct mbuf     *m;
        bus_dmamap_t    m_dmamap;
};

struct cemac_softc {
        device_t                sc_dev;
        bus_space_tag_t         sc_iot;
        bus_space_handle_t      sc_ioh;
        bus_dma_tag_t           sc_dmat;
        uint8_t                 sc_enaddr[ETHER_ADDR_LEN];
        struct ethercom         sc_ethercom;
        mii_data_t              sc_mii;
        int                     sc_phyno;

        void                    *rbqpage;
        unsigned                rbqlen;
        bus_addr_t              rbqpage_dsaddr;
        bus_dmamap_t            rbqpage_dmamap;
        void                    *tbqpage;
        unsigned                tbqlen;
        bus_addr_t              tbqpage_dsaddr;
        bus_dmamap_t            tbqpage_dmamap;

        volatile struct eth_dsc *RDSC;
        int                     rxqi;
        struct cemac_qmeta      rxq[RX_QLEN];
        volatile struct eth_dsc *TDSC;
        int                     txqi, txqc;
        struct cemac_qmeta      txq[TX_QLEN];
        callout_t               cemac_tick_ch;

        unsigned                cemac_flags;
#define CEMAC_FLAG_GEM  __BIT(0)

        kmutex_t *sc_mcast_lock;        /* m: lock for SIOCADD/DELMULTI */
        kmutex_t *sc_intr_lock;         /* i: lock for interrupt operations */

        u_short sc_if_flags;            /* m: if_flags cache */
        time_t sc_tx_lastsent;          /* i: time of last tx */
        bool sc_txbusy;                 /* i: no Tx because down or busy */
        bool sc_stopping;               /* i: ignore intr because down */
        bool sc_tx_sending;             /* i: expecting tx complete irq */
        bool sc_trigger_reset;          /* i */

        struct workqueue *sc_reset_wq;
        struct work sc_reset_work;      /* i */
        volatile unsigned sc_reset_pending;
};

int cemac_intr(void *);

void cemac_attach_common(struct cemac_softc *);


#endif /* _IF_CEMACVAR_H_ */