/*      $NetBSD: if_mcvar.h,v 1.14 2022/09/18 10:54:52 thorpej Exp $    */

/*-
 * Copyright (c) 1997 David Huang <khym@bga.com>
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * 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.
 *
 */

#include <macppc/dev/dbdma.h>

#if 1
#define integrate
#define hide
#else
#define integrate       static /*inline*/
#define hide            static
#endif

#define MC_REGSPACING   16
#define MC_REGSIZE      MACE_NREGS * MC_REGSPACING
#define MACE_REG(x)     ((x)*MC_REGSPACING)

#define NIC_GET(sc, reg)        (bus_space_read_1((sc)->sc_regt,        \
                                    (sc)->sc_regh, MACE_REG(reg)))
#define NIC_PUT(sc, reg, val)   (bus_space_write_1((sc)->sc_regt,       \
                                    (sc)->sc_regh, MACE_REG(reg), (val)))

#ifndef MC_RXDMABUFS
#define MC_RXDMABUFS    2
#endif
#if (MC_RXDMABUFS < 2)
#error Must have at least two buffers for DMA!
#endif

#define MC_NPAGES       ((MC_RXDMABUFS * 0x800 + PAGE_SIZE - 1) / PAGE_SIZE)

struct mc_rxframe {
        uint8_t         rx_rcvcnt;
        uint8_t         rx_rcvsts;
        uint8_t         rx_rntpc;
        uint8_t         rx_rcvcc;
        uint8_t         *rx_frame;
};

struct mc_softc {
        device_t        sc_dev;         /* base device glue */
        struct ethercom sc_ethercom;    /* Ethernet common part */
#define sc_if           sc_ethercom.ec_if
        struct ifmedia  sc_media;

        struct mc_rxframe       sc_rxframe;
        u_int8_t        sc_biucc;
        u_int8_t        sc_fifocc;
        u_int8_t        sc_plscc;
        u_int8_t        sc_enaddr[6];
        u_int8_t        sc_pad[2];
        int             sc_havecarrier; /* carrier status */
        void            (*sc_bus_init)(struct mc_softc *);
        void            (*sc_putpacket)(struct mc_softc *, u_int);
        int             (*sc_mediachange)(struct mc_softc *);
        void            (*sc_mediastatus)(struct mc_softc *,
                                struct ifmediareq *);

        bus_space_tag_t sc_regt;
        bus_space_handle_t sc_regh;

        u_char          *sc_txbuf, *sc_rxbuf;
        int             sc_txbuf_phys, sc_rxbuf_phys;
        int             sc_tail;
        bool            sc_txbusy;

        int             sc_node;
        dbdma_regmap_t  *sc_txdma;
        dbdma_command_t *sc_txdmacmd;
        dbdma_regmap_t  *sc_rxdma;
        dbdma_command_t *sc_rxdmacmd;
};

int     mcsetup(struct mc_softc *, u_int8_t *);
int     mcintr(void *arg);
void    mc_rint(struct mc_softc *sc);