/*      $OpenBSD: hmevar.h,v 1.17 2014/11/27 14:53:42 brad Exp $        */
/*      $NetBSD: hmevar.h,v 1.6 2000/09/28 10:56:57 tsutsui Exp $       */

/*-
 * Copyright (c) 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Paul Kranenburg.
 *
 * 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.
 */

#include <sys/timeout.h>

#define HME_TX_RING_SIZE        64
#define HME_RX_RING_SIZE        64
#define HME_RX_RING_MAX         256
#define HME_TX_RING_MAX         256
#define HME_RX_PKTSIZE          1600
#define HME_TX_NSEGS            16

struct hme_sxd {
        struct mbuf *sd_mbuf;           /* descriptor mbuf */
        bus_dmamap_t sd_map;            /* descriptor dmamap */
};

struct hme_ring {
        /* Ring Descriptors */
        caddr_t         rb_membase;     /* Packet buffer: CPU address */
        bus_addr_t      rb_dmabase;     /* Packet buffer: DMA address */
        caddr_t         rb_txd;         /* Transmit descriptors */
        bus_addr_t      rb_txddma;      /* DMA address of same */
        caddr_t         rb_rxd;         /* Receive descriptors */
        bus_addr_t      rb_rxddma;      /* DMA address of same */
};

struct hme_softc {
        struct device   sc_dev;         /* boilerplate device view */
        struct arpcom   sc_arpcom;      /* Ethernet common part */
        struct mii_data sc_mii;         /* MII media control */
#define sc_media        sc_mii.mii_media/* shorthand */
        struct timeout  sc_tick_ch;     /* tick callout */

        /* The following bus handles are to be provided by the bus front-end */
        bus_space_tag_t sc_bustag;      /* bus tag */
        bus_dma_tag_t   sc_dmatag;      /* bus dma tag */
        bus_dmamap_t    sc_dmamap;      /* bus dma handle */
        bus_space_handle_t sc_seb;      /* HME Global registers */
        bus_space_handle_t sc_erx;      /* HME ERX registers */
        bus_space_handle_t sc_etx;      /* HME ETX registers */
        bus_space_handle_t sc_mac;      /* HME MAC registers */
        bus_space_handle_t sc_mif;      /* HME MIF registers */
        int             sc_burst;       /* DVMA burst size in effect */
        int             sc_phys[2];     /* MII instance -> PHY map */

        int             sc_pci;         /* XXXXX -- PCI buses are LE. */

        /* Ring descriptor */
        struct hme_ring         sc_rb;

        int                     sc_debug;

        struct hme_sxd sc_txd[HME_TX_RING_MAX], sc_rxd[HME_RX_RING_MAX];
        bus_dmamap_t    sc_rxmap_spare;
        int     sc_tx_cnt, sc_tx_prod, sc_tx_cons;
        struct if_rxring sc_rx_ring;
        int     sc_rx_prod, sc_rx_cons;
        u_int32_t sc_tcvr;
};


void    hme_config(struct hme_softc *);
void    hme_unconfig(struct hme_softc *);
void    hme_reset(struct hme_softc *);
int     hme_intr(void *);