/* $NetBSD: if_ne_xsurf.c,v 1.2 2023/12/20 00:40:42 thorpej Exp $ */

/* $NetBSD: if_ne_xsurf.c,v 1.2 2023/12/20 00:40:42 thorpej Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Bernd Ernesti.
*
* 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>

/*
* X-Surf driver, ne(4) attachment.
*/

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

#include <net/if.h>
#include <net/if_media.h>
#include <net/if_ether.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 <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>

#include <amiga/dev/xsurfvar.h>
#include <amiga/dev/zbusvar.h>

int ne_xsurf_match(device_t, cfdata_t , void *);
void ne_xsurf_attach(device_t, device_t, void *);

struct ne_xsurf_softc {
struct ne2000_softc sc_ne2000;
struct bus_space_tag sc_bst;
struct isr sc_isr;
};

CFATTACH_DECL_NEW(ne_xsurf, sizeof(struct ne_xsurf_softc),
ne_xsurf_match, ne_xsurf_attach, NULL, NULL);

/*
* The Amiga address are shifted by one bit to the ISA-Bus, but
* this is handled by the bus_space functions.
*/
#define NE_XSURF_NPORTS 0x20
#define NE_XSURF_NICBASE 0x0300 /* 0x0600 */
#define NE_XSURF_NICSIZE 0x10
#define NE_XSURF_ASICBASE 0x0310 /* 0x0620 */
#define NE_XSURF_ASICSIZE 0x10

#define XSURF_NE_OFFSET 0x8000

/*
* Clockport offsets.
*/
#define XSURF_CP1_BASE 0xA001
#define XSURF_CP2_BASE 0xC000

/*
* E3B Deneb firmware v11 creates fake X-Surf autoconfig entry.
* Do not attach ne driver to this fake card, otherwise kernel panic
* may occur.
*/
#define DENEB_XSURF_SERNO 0xC0FFEE01 /* Serial of the fake card */

int
ne_xsurf_match(device_t parent, cfdata_t cf, void *aux)
{
struct xsurfbus_attach_args *xap = aux;

if (strcmp(xap->xaa_name, "ne_xsurf") != 0)
return 0;

return 1;
}

/*
* Install interface into kernel networking data structures.
*/
void
ne_xsurf_attach(device_t parent, device_t self, void *aux)
{
struct ne_xsurf_softc *zsc = device_private(self);
struct ne2000_softc *nsc = &zsc->sc_ne2000;
struct dp8390_softc *dsc = &nsc->sc_dp8390;

struct xsurfbus_attach_args *xap = aux;

bus_space_tag_t nict = &zsc->sc_bst;
bus_space_handle_t nich;
bus_space_tag_t asict = nict;
bus_space_handle_t asich;

dsc->sc_dev = self;
dsc->sc_mediachange = rtl80x9_mediachange;
dsc->sc_mediastatus = rtl80x9_mediastatus;
dsc->init_card = rtl80x9_init_card;
dsc->sc_media_init = rtl80x9_media_init;

zsc->sc_bst.base = xap->xaa_base;

zsc->sc_bst.absm = &amiga_bus_stride_2;

aprint_normal("\n");

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

if (bus_space_subregion(nict, nich, NE2000_ASIC_OFFSET,
NE_XSURF_ASICSIZE, &asich)) {
aprint_error_dev(self, "can't map asic 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;

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

zsc->sc_isr.isr_intr = dp8390_intr;
zsc->sc_isr.isr_arg = dsc;
zsc->sc_isr.isr_ipl = 2;
add_isr(&zsc->sc_isr);
}