if_dme_zbus.c

/*	$NetBSD$ */

/*-
 * Copyright (c) 2013 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Radoslaw Kujawa.
 *
 * 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, "$NetBSD$");

/* Support for DM9000B on Z3SDRAM. */

#include <sys/param.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/systm.h>
#include <sys/bus.h>

#include <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>

#include <amiga/dev/zbusvar.h>

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

#define Z3SDRAM_ETH_VENDOR	0x0A46	
#define Z3SDRAM_ETH_DEVICE	0x9000

#define Z3SDRAM_ETH_INDEX	0x0
#define Z3SDRAM_ETH_DATA	0x1	/* stride 4, so 4*1  */
#define Z3SDRAM_ETH_SIZE	0x8

static int	dme_zbus_match(device_t, cfdata_t , void *);
static void	dme_zbus_attach(device_t, device_t, void *);

struct dme_zbus_softc {
	struct dme_softc	sc_sc;

	struct bus_space_tag	sc_bst;
	struct isr		sc_isr;
};

CFATTACH_DECL_NEW(dme_zbus, sizeof(struct dme_zbus_softc),
    dme_zbus_match, dme_zbus_attach, NULL, NULL);

static int
dme_zbus_match(device_t parent, cfdata_t cf, void *aux)
{
	struct zbus_args *zap = aux;

	/* Ethernet on Z3SDRAM. */
	if (zap->manid == Z3SDRAM_ETH_VENDOR &&
	    zap->prodid == Z3SDRAM_ETH_DEVICE) {
			return 1;
	}

	return 0;
}

static void
dme_zbus_attach(device_t parent, device_t self, void *aux)
{
	struct dme_zbus_softc *zsc;
	struct dme_softc *sc;
	struct zbus_args *zap;
	uint8_t enaddr[ETHER_ADDR_LEN];
	bus_space_tag_t iot;
	bus_space_handle_t ioh;

	zap = aux;
	zsc = device_private(self);

	sc = &zsc->sc_sc;
	sc->sc_dev = self;

	zsc->sc_bst.base = (bus_addr_t)zap->va;
	zsc->sc_bst.absm = &amiga_bus_stride_4;
	iot = &zsc->sc_bst;

	aprint_normal(": Z3SDRAM Ethernet\n");

	if (bus_space_map(iot, Z3SDRAM_ETH_INDEX, Z3SDRAM_ETH_SIZE, 0, 
	    &ioh)) {
		aprint_error_dev(sc->sc_dev, "can't map the bus\n");
	}

	sc->dme_io = Z3SDRAM_ETH_INDEX;
	sc->dme_data = Z3SDRAM_ETH_DATA;

	enaddr = { 0,0x0a,0xb1,0xc1,1,0xff };

	/* Attach interrupt routine. */
	zsc->sc_isr.isr_intr = dme_intr;
	zsc->sc_isr.isr_arg = sc;
	zsc->sc_isr.isr_ipl = 6;

	add_isr(&zsc->sc_isr);

	dme_attach(sc, enaddr);

}