/*      $NetBSD: sgecvar.h,v 1.9 2017/05/22 17:23:49 ragge Exp $ */
/*
 * Copyright (c) 1999 Ludd, University of Lule}, Sweden. 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.
 */

#ifndef _DEV_IC_SGECVAR_H_
#define _DEV_IC_SGECVAR_H_

#define RXDESCS 30      /* # of receive descriptors */
#define TXDESCS 60      /* # transmit descs */

/*
 * Descriptors must be an even number; optimisation thing.
 */
struct ze_cdata {
        struct ze_rdes  zc_recv[RXDESCS+2];     /* Receive descriptors */
        struct ze_tdes  zc_xmit[TXDESCS+2];     /* Transmit descriptors */
        u_int8_t        zc_setup[128];          /* Setup packet layout */
};

struct  ze_softc {
        device_t        sc_dev;         /* Configuration common part    */
        struct evcnt    sc_intrcnt;     /* Interrupt counters           */
        struct evcnt    sc_rxintrcnt;   /* Interrupt counters           */
        struct evcnt    sc_txintrcnt;   /* Interrupt counters           */
        struct evcnt    sc_txdraincnt;  /* Interrupt counters           */
        struct evcnt    sc_nobufintrcnt; /* Interrupt counters          */
        struct evcnt    sc_nointrcnt;   /* Interrupt counters           */
        struct ethercom sc_ec;          /* Ethernet common part         */
#define sc_if   sc_ec.ec_if             /* network-visible interface    */
        bus_space_tag_t sc_iot;
        bus_addr_t      sc_ioh;
        bus_dma_tag_t   sc_dmat;
        struct ze_cdata *sc_zedata;     /* Descriptor struct            */
        struct ze_cdata *sc_pzedata;    /* Physical address of above    */
        bus_dmamap_t    sc_cmap;        /* Map for control structures   */
        struct mbuf*    sc_txmbuf[TXDESCS];
        struct mbuf*    sc_rxmbuf[RXDESCS];
        bus_dmamap_t    sc_xmtmap[TXDESCS];
        bus_dmamap_t    sc_rcvmap[RXDESCS];
        int             sc_intvec;      /* Interrupt vector             */
        int             sc_nexttx;
        int             sc_txcnt;
        int             sc_inq;
        int             sc_lastack;
        int             sc_nextrx;
        int             sc_setup;       /* Setup packet in queue        */
        u_int8_t        sc_enaddr[ETHER_ADDR_LEN];
};

void    sgec_attach(struct ze_softc *);
int     sgec_intr(struct ze_softc *);

#endif /* _DEV_IC_SGECVAR_H_ */