/*-
* Copyright (c) 2012 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Fleischer <[email protected]>
*
* 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/cdefs.h>

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

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

#include <sys/bus.h>
#include <machine/intr.h>

#include <arch/arm/s3c2xx0/s3c2440reg.h>
#include <arch/arm/s3c2xx0/s3c2440var.h>

#include <arch/arm/s3c2xx0/s3c2440_dma.h>

#include <dev/ic/dm9000var.h>
#include <dev/ic/dm9000reg.h>

#include "opt_mini2440.h"

int     dme_ssextio_match(device_t, cfdata_t, void *);
void    dme_ssextio_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(dme_ssextio, sizeof(struct dme_softc),
   dme_ssextio_match, dme_ssextio_attach, NULL, NULL);

int
dme_ssextio_match(device_t parent, cfdata_t cf, void *aux)
{
       struct s3c2xx0_attach_args *sa = aux;
       bus_space_tag_t iot = sa->sa_iot;
       bus_space_handle_t ioh;
       vaddr_t ioaddr;
       struct dme_softc sc; /* Used to temporarily access the device for
                              probing */
       int have_io = 0;
       int result = 0;
       uint8_t vendorId[2];
       uint8_t productId[2];

       /* Map memory to access the device during probing */
       ioaddr = sa->sa_addr;
       if (bus_space_map(iot, ioaddr, DM9000_IOSIZE, 0, &ioh))
               goto out;
       have_io = 1;

       /* Zero the device description */
       memset(&sc, 0, sizeof sc);
       sc.sc_iot = iot;
       sc.sc_ioh = ioh;
       sc.dme_io = 0x0;
       sc.dme_data = 0x4;

       vendorId[0] = dme_read(&sc, DM9000_VID0);
       vendorId[1] = dme_read(&sc, DM9000_VID1);

       productId[0] = dme_read(&sc, DM9000_PID0);
       productId[1] = dme_read(&sc, DM9000_PID1);

       if (vendorId[0] == 0x46 && vendorId[1] == 0x0a &&
           productId[0] == 0x00 && productId[1] == 0x90 ) {
               result = 1;
       }

out:
       if (have_io)
               bus_space_unmap(iot, ioh, DM9000_IOSIZE);

       return result;
}


void
dme_ssextio_attach(device_t parent, device_t self, void *aux)
{
       struct dme_softc           *sc = device_private(self);
       struct s3c2xx0_attach_args *sa = aux;
       vaddr_t                     ioaddr;
       const uint8_t           *enaddr;
       prop_data_t             ea;

#ifdef MINI2440_ETHER_ADDR_FIXED
       static uint8_t enaddr_default[ETHER_ADDR_LEN] = {MINI2440_ETHER_ADDR_FIXED};
#endif

       sc->sc_iot = sa->sa_iot;
       sc->sc_dev = self;

       ioaddr = sa->sa_addr;
       if (bus_space_map(sc->sc_iot, ioaddr, DM9000_IOSIZE, 0, &sc->sc_ioh)) {
               aprint_error(": unable to map i/o space\n");
               return;
       }


       sc->sc_ih = s3c2440_extint_establish(sa->sa_intr, IPL_NET, IST_EDGE_RISING, dme_intr, sc);
       if (sc->sc_ih == NULL) {
               aprint_error(": unable to establish interrupt\n");
               return;
       }

       sc->dme_io = 0x0;
       sc->dme_data = 0x4;

       aprint_normal("\n");

       ea = prop_dictionary_get(device_properties(self), "mac-address");
       if( ea != NULL ) {
               KASSERT(prop_object_type(ea) == PROP_TYPE_DATA);
               KASSERT(prop_data_size(ea) == ETHER_ADDR_LEN);
               enaddr = prop_data_data_nocopy(ea);
       } else {
#ifdef MINI2440_ETHER_ADDR_FIXED
               enaddr = &enaddr_default;
#else
               aprint_error_dev(self, "Unable to get mac-address property\n");
               return;
#endif
       }

       dme_attach(sc, enaddr);
}