/*      $NetBSD: if_le.c,v 1.19 2011/11/20 15:38:00 tsutsui Exp $       */

/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass and Gordon W. Ross.
*
* 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.
*/

/*
* news68k/dev/if_le.c - based on newsmips/dev/if_le.c
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.19 2011/11/20 15:38:00 tsutsui Exp $");

#include "opt_inet.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.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 <news68k/dev/hbvar.h>

#include <dev/ic/lancereg.h>
#include <dev/ic/lancevar.h>
#include <dev/ic/am7990reg.h>
#include <dev/ic/am7990var.h>

#include "ioconf.h"

/*
* LANCE registers.
* The real stuff is in dev/ic/am7990reg.h
*/
struct lereg1 {
       volatile uint16_t       ler1_rdp;       /* data port */
       volatile uint16_t       ler1_rap;       /* register select port */
};

/*
* Ethernet software status per interface.
* The real stuff is in dev/ic/am7990var.h
*/
struct  le_softc {
       struct  am7990_softc sc_am7990; /* glue to MI code */

       struct  lereg1 *sc_r1;          /* LANCE registers */
};

static int  le_match(device_t, cfdata_t, void *);
static void le_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(le, sizeof(struct le_softc),
   le_match, le_attach, NULL, NULL);

extern const uint8_t *idrom_addr;
extern uint32_t lance_mem_phys;

#if defined(_KERNEL_OPT)
#include "opt_ddb.h"
#endif

#ifdef DDB
#define integrate
#define hide
#else
#define integrate       static inline
#define hide            static
#endif

hide void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
hide uint16_t lerdcsr(struct lance_softc *, uint16_t);
int leintr(int);

hide void
lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
{
       struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;

       ler1->ler1_rap = port;
       ler1->ler1_rdp = val;
}

hide uint16_t
lerdcsr(struct lance_softc *sc, uint16_t port)
{
       struct lereg1 *ler1 = ((struct le_softc *)sc)->sc_r1;
       uint16_t val;

       ler1->ler1_rap = port;
       val = ler1->ler1_rdp;
       return val;
}

int
le_match(device_t parent, cfdata_t cf, void *aux)
{
       struct hb_attach_args *ha = aux;
       int addr;

       if (strcmp(ha->ha_name, "le"))
               return 0;

       addr = (ha->ha_address);

       if (badaddr((void *)addr, 1))
               return 0;

       return 1;
}

void
le_attach(device_t parent, device_t self, void *aux)
{
       struct le_softc *lesc = device_private(self);
       struct lance_softc *sc = &lesc->sc_am7990.lsc;
       struct hb_attach_args *ha = aux;
       const uint8_t *p;

       sc->sc_dev = self;
       lesc->sc_r1 = (void *)(ha->ha_address);

       if (ISIIOPA(ha->ha_address)) {
               sc->sc_mem = (u_char *)(lance_mem_phys);
               p = idrom_addr + 0x10;
       } else {
               sc->sc_mem = lesc->sc_r1 - 0x10000;
               p = (const uint8_t *)(lesc->sc_r1 + 0x8010);
       }

       sc->sc_memsize = 0x4000;        /* 16K */
       sc->sc_addr = lance_mem_phys & 0x00ffffff;
       sc->sc_conf3 = LE_C3_BSWP|LE_C3_BCON;

       sc->sc_enaddr[0] = (*p++ << 4);
       sc->sc_enaddr[0] |= *p++ & 0x0f;
       sc->sc_enaddr[1] = (*p++ << 4);
       sc->sc_enaddr[1] |= *p++ & 0x0f;
       sc->sc_enaddr[2] = (*p++ << 4);
       sc->sc_enaddr[2] |= *p++ & 0x0f;
       sc->sc_enaddr[3] = (*p++ << 4);
       sc->sc_enaddr[3] |= *p++ & 0x0f;
       sc->sc_enaddr[4] = (*p++ << 4);
       sc->sc_enaddr[4] |= *p++ & 0x0f;
       sc->sc_enaddr[5] = (*p++ << 4);
       sc->sc_enaddr[5] |= *p++ & 0x0f;

       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;

       am7990_config(&lesc->sc_am7990);
}

int
leintr(int unit)
{
       struct am7990_softc *sc;

       if (unit >= le_cd.cd_ndevs)     /* XXX */
               return 0;

       sc = device_lookup_private(&le_cd, unit);
       return am7990_intr(sc);
}