/* $NetBSD: if_ne_mca.c,v 1.15 2008/04/28 20:23:53 martin Exp $ */

/* $NetBSD: if_ne_mca.c,v 1.15 2008/04/28 20:23:53 martin Exp $ */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* 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.
*/

/*
* Driver for Novell NE/2 Ethernet Adapter (and clones).
*
* According to Linux ne2 driver, Arco and Compex card should be also
* supported by this driver. However, NetBSD driver was only tested
* with the Novell adapter so far.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ne_mca.c,v 1.15 2008/04/28 20:23:53 martin Exp $");

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

#include <net/if.h>
#include <net/if_types.h>
#include <net/if_media.h>
#include <net/if_ether.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/ic/rtl80x9reg.h>
#include <dev/ic/rtl80x9var.h>

#include <dev/mca/mcadevs.h>
#include <dev/mca/mcavar.h>

#define NE2_NPORTS 0x30

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

/* MCA-specific goo */
void *sc_ih; /* interrupt handle */
};

int ne_mca_match(device_t, cfdata_t , void *);
void ne_mca_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(ne_mca, sizeof(struct ne_mca_softc),
ne_mca_match, ne_mca_attach, NULL, NULL);

static const struct ne_mca_products {
u_int32_t ne_id;
const char *ne_name;
} ne_mca_products[] = {
{ MCA_PRODUCT_ARCOAE, "Arco Electronics AE/2 Ethernet Adapter" },
{ MCA_PRODUCT_NE2, "Novell NE/2 Ethernet Adapter" },
{ MCA_PRODUCT_CENET16, "Compex Inc. PS/2 ENET16-MC/P Microchannel Ad."},
{ 0, NULL }
};

static const struct ne_mca_products *ne_mca_lookup(int id);

static const struct ne_mca_products *
ne_mca_lookup(int id)
{
const struct ne_mca_products *np;

for(np = ne_mca_products; np->ne_name; np++)
if (id == np->ne_id)
return (np);

return (NULL);
}

int
ne_mca_match(device_t parent, cfdata_t cf, void *aux)
{
struct mca_attach_args *ma = aux;

if (ne_mca_lookup(ma->ma_id))
return (1);

return (0);
}

/* These values were taken from NE/2 ADF file */
static const int ne_mca_irq[] = {
3, 4, 5, 9
};
static const int ne_mca_iobase[] = {
0, 0x1000, 0x2020, 0x8020, 0xa0a0, 0xb0b0, 0xc0c0, 0xc3d0
};

void
ne_mca_attach(device_t parent, device_t self, void *aux)
{
struct ne_mca_softc *psc = device_private(self);
struct ne2000_softc *nsc = &psc->sc_ne2000;
struct dp8390_softc *dsc = &nsc->sc_dp8390;
struct mca_attach_args *ma = aux;
bus_space_tag_t nict;
bus_space_handle_t nich;
bus_space_tag_t asict;
bus_space_handle_t asich;
int pos2, iobase, irq;
const struct ne_mca_products *np;

dsc->sc_dev = self;

pos2 = mca_conf_read(ma->ma_mc, ma->ma_slot, 2);

/*
* POS register 2: (adf pos0)
*
* 7 6 5 4 3 2 1 0
* \_/ | \___/ \__ enable: 0=adapter disabled, 1=adapter enabled
* | | \____ I/O, Mem: 001=0x1000-0x102f 010=0x2020-0x204f
* | | 011=0x8020-0x804f 100=0xa0a0-0xa0cf
* | | 101=0xb0b0-0xb0df 110=0xc0c0-0xc0ef
* \ \ 111=0xc3d0-0xc3ff
* \ \________ Boot Rom: 1=disabled 0=enabled
* \__________ Interrupt level: 00=3 01=4 10=5 11=9
*/

np = ne_mca_lookup(ma->ma_id);

iobase = ne_mca_iobase[(pos2 & 0x0e) >> 1];
irq = ne_mca_irq[(pos2 & 0x60) >> 5];

aprint_normal(" slot %d irq %d: %s\n", ma->ma_slot + 1, irq,
np->ne_name);

nict = ma->ma_iot;

/* Map the device. */
if (bus_space_map(nict, iobase, NE2_NPORTS, 0, &nich)) {
aprint_error_dev(self, "can't map i/o space\n");
return;
}

asict = nict;
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;

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

dsc->sc_mediachange = NULL;
dsc->sc_mediastatus = NULL;
dsc->sc_media_init = NULL;
dsc->init_card = NULL;

/*
* This is necessary for NE/2. Hopefully the other clones also work
* this way.
*/
nsc->sc_type = NE2000_TYPE_AX88190;

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

/* establish interrupt handler */
psc->sc_ih = mca_intr_establish(ma->ma_mc, irq, IPL_NET, dp8390_intr,
dsc);
if (psc->sc_ih == NULL) {
aprint_error_dev(self,
"couldn't establish interrupt handler\n");
return;
}
}