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

/*-
* Copyright (c) 1997 David Huang <[email protected]>
* 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);