freebsd/sys/dev/sbni/if_sbni_isa.c

/*
 * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved.
 * Author: Denis I.Timofeev <timofeev@granch.ru>
 *
 * Redistributon 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 unmodified, 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 AUTHOR 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 AUTHOR 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 NEIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD$
 */


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

#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>

#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_arp.h>

#include <isa/isavar.h>

#include <dev/sbni/if_sbnireg.h>
#include <dev/sbni/if_sbnivar.h>

static int	sbni_probe_isa(device_t);
static int	sbni_attach_isa(device_t);

static device_method_t sbni_isa_methods[] = {
	/* Device interface */
	DEVMETHOD(device_probe,	sbni_probe_isa),
	DEVMETHOD(device_attach, sbni_attach_isa),
	{ 0, 0 }
};

static driver_t sbni_isa_driver = {
	"sbni",
	sbni_isa_methods,
	sizeof(struct sbni_softc)
};

static devclass_t sbni_isa_devclass;
static struct isa_pnp_id  sbni_ids[] = {
	{ 0, NULL }	/* we have no pnp sbni cards atm.  */
};

DRIVER_MODULE(if_sbni, isa, sbni_isa_driver, sbni_isa_devclass, 0, 0);


static int
sbni_probe_isa(device_t dev)
{
	struct sbni_softc *sc;
	int error;

	error = ISA_PNP_PROBE(device_get_parent(dev), dev, sbni_ids);
	if (error && error != ENOENT)
		return (error);

	sc = device_get_softc(dev);
	bzero(sc, sizeof(struct sbni_softc));

 	sc->io_res = bus_alloc_resource(dev, SYS_RES_IOPORT, &sc->io_rid,
					0ul, ~0ul, SBNI_PORTS, RF_ACTIVE);
	if (!sc->io_res) {
		printf("sbni: cannot allocate io ports!\n");
		return (ENOENT);
	}

	if (sbni_probe(sc) != 0) {
		bus_release_resource(dev, SYS_RES_IOPORT,
				     sc->io_rid, sc->io_res);
		return (ENXIO);
	}

	device_quiet(dev);
	return (0);
}


static int
sbni_attach_isa(device_t dev)
{
	struct sbni_softc *sc;
	struct sbni_flags flags;
	int error;
   
	sc = device_get_softc(dev);

	printf("sbni%d: <Granch SBNI12/ISA adapter> port 0x%lx",
	       next_sbni_unit, rman_get_start(sc->io_res));
	sc->irq_res = bus_alloc_resource(
	    dev, SYS_RES_IRQ, &sc->irq_rid, 0ul, ~0ul, 1, RF_ACTIVE);

	if (sc->irq_res) {
		printf(" irq %ld\n", rman_get_start(sc->irq_res));
		error = bus_setup_intr(
		    dev, sc->irq_res, INTR_TYPE_NET,
		    sbni_intr, sc, &sc->irq_handle);
		if (error) {
			printf("sbni%d: bus_setup_intr\n", next_sbni_unit);
			bus_release_resource(
			    dev, SYS_RES_IOPORT, sc->io_rid, sc->io_res);
			bus_release_resource(
			    dev, SYS_RES_IRQ, sc->irq_rid, sc->irq_res);
			return (error);
		}

#ifndef SBNI_DUAL_COMPOUND

	} else {
		printf("\nsbni%d: irq conflict!\n", next_sbni_unit);
		bus_release_resource(dev, SYS_RES_IOPORT,
				     sc->io_rid, sc->io_res);
		return (ENOENT);
	}

#else	/* SBNI_DUAL_COMPOUND */

		sc->link = sbni_headlist;
		sbni_headlist = sc;
	} else {
		struct sbni_softc  *master;

		if ((master = connect_to_master(sc)) == 0) {
			printf("\nsbni%d: failed to alloc irq\n",
			       next_sbni_unit);
			bus_release_resource(
			    dev, SYS_RES_IOPORT, sc->io_rid, sc->io_res);
			return (ENXIO);
		} else {
			printf(" shared irq with sbni%d\n",
			       master->arpcom.ac_if.if_unit);
		}
	} 
#endif	/* SBNI_DUAL_COMPOUND */

	*(u_int32_t*)&flags = device_get_flags(dev);

	sbni_attach(sc, next_sbni_unit++, flags);
	return (0);
}