/*      $NetBSD: if_le.c,v 1.7 2008/04/04 12:25:06 tsutsui Exp $        */

/*
* Copyright (c) 1997, 1999
*      Matthias Drochner.  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.
*
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.7 2008/04/04 12:25:06 tsutsui Exp $");

#include "opt_inet.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/device.h>

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

#ifdef INET
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif

#include <machine/cpu.h>
#include <machine/pte.h>

#include <machine/autoconf.h>

#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am79900reg.h>
#include <dev/ic/am79900var.h>

#include <cesfic/cesfic/isr.h>

int lematch(device_t, cfdata_t, void *);
void leattach(device_t, device_t, void *);

CFATTACH_DECL_NEW(le, sizeof(struct am79900_softc),
   lematch, leattach, NULL, NULL);

int     leintr(void *);

void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
uint16_t lerdcsr(struct lance_softc *, uint16_t);

static char *lebase, *lemembase;

void
lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{

       *(volatile int *)(lebase + 4) = port;
       *(volatile int *)(lebase + 0) = val;
}

uint16_t
lerdcsr(struct lance_softc *sc, uint16_t port)
{
       uint16_t val;

       *(volatile int *)(lebase + 4) = port;
       val = *(volatile int *)(lebase + 0);
       return (val);
}

int
lematch(device_t parent, cfdata_t cf, void *aux)
{

       return (1);
}

/*
* Interface exists: make available by filling in network interface
* record.  System will initialize the interface when it is ready
* to accept packets.
*/
extern void sic_enable_int(int, int, int, int, int);
static char hwa[6] = {0x00,0x80,0xa2,0x00,0x30,0x23};
void
leattach(device_t parent, device_t self, void *aux)
{
       struct lance_softc *sc = device_private(self);
       int i;

       mainbus_map(0x4c000000, 0x10000, 0, (void *)&lemembase);
       mainbus_map(0x48000000, 0x1000, 0, (void *)&lebase);

       sc->sc_dev = self;
       sc->sc_mem = lemembase;
       sc->sc_conf3 = LE_C3_BSWP;
       sc->sc_addr = 0x4c000000;
       sc->sc_memsize = 64 * 1024;

       if (cesfic_getetheraddr(sc->sc_enaddr)) {
               /* fallback */
               for (i = 0; i < sizeof(sc->sc_enaddr); i++) {
                       sc->sc_enaddr[i] = hwa[i];
               }
       }

       sc->sc_copytodesc = lance_copytobuf_contig;
       sc->sc_copyfromdesc = lance_copyfrombuf_contig;
       sc->sc_copytobuf = lance_copytobuf_contig;
       sc->sc_copyfrombuf = lance_copyfrombuf_contig;
       sc->sc_zerobuf = lance_zerobuf_contig;

       sc->sc_rdcsr = lerdcsr;
       sc->sc_wrcsr = lewrcsr;
       sc->sc_hwinit = NULL;

       lewrcsr(sc, 4, 0x44);
       am79900_config((struct am79900_softc *)sc);

       /* Establish the interrupt handler. */
       (void) isrlink(leintr, sc, 3, ISRPRI_NET);
       sic_enable_int(17, 0, 1, 3, 0);
}

int
leintr(void *arg)
{
       struct lance_softc *sc = arg;
       uint16_t isr4;

       isr4 = lerdcsr(sc, 4);
       if (isr4 & 0x08) {
               lewrcsr(sc, 4, isr4);
               return (1);
       }

       return (am79900_intr(sc));
}