/* $NetBSD: if_ne_isa.c,v 1.27 2010/03/03 13:39:57 tsutsui Exp $ */

/* $NetBSD: if_ne_isa.c,v 1.27 2010/03/03 13:39:57 tsutsui Exp $ */

/*-
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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>
__KERNEL_RCSID(0, "$NetBSD: if_ne_isa.c,v 1.27 2010/03/03 13:39:57 tsutsui Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>

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

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

#include <dev/ic/dp8390reg.h>
#include <dev/ic/dp8390var.h>

#include <dev/ic/ne2000reg.h>
#include <dev/ic/ne2000var.h>

#include <dev/isa/isavar.h>

int ne_isa_match(device_t, cfdata_t, void *);
void ne_isa_attach(device_t, device_t, void *);

struct ne_isa_softc {
struct ne2000_softc sc_ne2000; /* real "ne2000" softc */

/* ISA-specific goo. */
void *sc_ih; /* interrupt cookie */
};

CFATTACH_DECL_NEW(ne_isa, sizeof(struct ne_isa_softc),
ne_isa_match, ne_isa_attach, NULL, NULL);

int
ne_isa_match(device_t parent, cfdata_t match, void *aux)
{
struct isa_attach_args *ia = aux;
bus_space_tag_t nict = ia->ia_iot;
bus_space_handle_t nich;
bus_space_tag_t asict;
bus_space_handle_t asich;
int rv = 0;

if (ia->ia_nio < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);

if (ISA_DIRECT_CONFIG(ia))
return (0);

/* Disallow wildcarded values. */
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);
if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
return (0);

/* Make sure this is a valid NE[12]000 i/o address. */
if ((ia->ia_io[0].ir_addr & 0x1f) != 0)
return (0);

/* Map i/o space. */
if (bus_space_map(nict, ia->ia_io[0].ir_addr, NE2000_NPORTS, 0, &nich))
return (0);

asict = nict;
if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
NE2000_ASIC_NPORTS, &asich))
goto out;

/* Look for an NE2000-compatible card. */
rv = ne2000_detect(nict, nich, asict, asich);

if (rv) {
ia->ia_nio = 1;
ia->ia_io[0].ir_size = NE2000_NPORTS;

ia->ia_nirq = 1;

ia->ia_niomem = 0;
ia->ia_ndrq = 0;
}

out:
bus_space_unmap(nict, nich, NE2000_NPORTS);
return (rv);
}

void
ne_isa_attach(device_t parent, device_t self, void *aux)
{
struct ne_isa_softc *isc = device_private(self);
struct ne2000_softc *nsc = &isc->sc_ne2000;
struct dp8390_softc *dsc = &nsc->sc_dp8390;
struct isa_attach_args *ia = aux;
bus_space_tag_t nict = ia->ia_iot;
bus_space_handle_t nich;
bus_space_tag_t asict = nict;
bus_space_handle_t asich;
const char *typestr;
int netype;

dsc->sc_dev = self;
aprint_normal("\n");

/* Map i/o space. */
if (bus_space_map(nict, ia->ia_io[0].ir_addr, NE2000_NPORTS,
0, &nich)) {
aprint_error_dev(self, "can't map i/o space\n");
return;
}

if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
NE2000_ASIC_NPORTS, &asich)) {
aprint_error_dev(self, "can't subregion i/o space\n");
return;
}

dsc->sc_regt = nict;
dsc->sc_regh = nich;

nsc->sc_asict = asict;
nsc->sc_asich = asich;

/*
* Detect it again, so we can print some information about the
* interface.
*/
netype = ne2000_detect(nict, nich, asict, asich);
switch (netype) {
case NE2000_TYPE_NE1000:
typestr = "NE1000";
break;

case NE2000_TYPE_NE2000:
typestr = "NE2000";
break;

case NE2000_TYPE_RTL8019:
typestr = "NE2000 (RTL8019)";
break;

default:
aprint_error_dev(self, "where did the card go?!\n");
return;
}

aprint_normal_dev(self, "%s Ethernet\n", typestr);

/* This interface is always enabled. */
dsc->sc_enabled = 1;

/*
* Do generic NE2000 attach. This will read the station address
* from the EEPROM.
*/
ne2000_attach(nsc, NULL);

/* Establish the interrupt handler. */
isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
IST_EDGE, IPL_NET, dp8390_intr, dsc);
if (isc->sc_ih == NULL)
aprint_error_dev(self,
"couldn't establish interrupt handler\n");
}