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Cleanup ISA probe code.  Don't collect info first.  Just do the probe.

/*	$NetBSD: if_lc_isa.c,v 1.2 1997/10/15 21:26:51 matt Exp $ */

/*-
 * Copyright (c) 1994, 1995, 1997 Matt Thomas <matt@3am-software.com>
 * All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software withough specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/*
 * DEC EtherWORKS 3 Ethernet Controllers
 *
 * Written by Matt Thomas
 *
 *   This driver supports the LEMAC (DE203, DE204, and DE205) cards.
 */

#include "bpfilter.h"

#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 <sys/queue.h>

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


#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_inarp.h>
#endif

#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif

#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif

#include <machine/cpu.h>
#include <machine/bus.h>
#include <machine/intr.h>

#include <dev/ic/lemacreg.h>
#include <dev/ic/lemacvar.h>

#include <dev/isa/isavar.h>

static int
lemac_isa_probe(
    struct device *parent,
#ifdef __BROKEN_INDIRECT_CONFIG
    void *match,
#else
    struct cfdata *match,
#endif
    void *aux)
{
    struct isa_attach_args * const ia = aux;
    int irq;
    bus_addr_t iobase;
    bus_addr_t iolimit;
    bus_addr_t maddr;
    bus_addr_t msize;
    bus_space_handle_t memh;
    bus_space_handle_t ioh;

    /*
     * Determine if we are probing for any card or a specific card.
     */
    if (ia->ia_iobase == IOBASEUNK) {
	iobase = LEMAC_IOBASE_LOW;
	iolimit = LEMAC_IOBASE_HIGH;
    } else if (ia->ia_iobase & (LEMAC_IOSIZE-1)) {
	return 0;
    } else {
	iobase = ia->ia_iobase;
	iolimit = ia->ia_iobase + LEMAC_IOSIZE;
    }

    for (; iobase < iolimit; iobase += LEMAC_IOSIZE) {
	/*
	 * Map the LEMACs port-space for the probe sequence.
	 */
	if (bus_space_map(ia->ia_iot, iobase, LEMAC_IOSIZE, 0, &ioh))
	    continue;

	/*
	 * Read the Ethernet address from the EEPROM.
	 * It must start with on the DEC OUIs and pass the
	 * DEC ethernet checksum test.
	 */

	if (lemac_port_check(ia->ia_iot, ioh)) {
	    lemac_info_get(ia->ia_iot, ioh, &maddr, &msize, &irq);
	    if (!bus_space_map(ia->ia_memt, maddr, msize, 0, &memh)) {
		bus_space_unmap(ia->ia_memt, memh, msize);
		if ((ia->ia_maddr == MADDRUNK || ia->ia_maddr == maddr)
			&& (ia->ia_irq == IRQUNK || ia->ia_irq == irq)) {
		    ia->ia_iobase = iobase;
		    ia->ia_irq    = irq;
		    ia->ia_iosize = LEMAC_IOSIZE;
		    ia->ia_maddr  = maddr;
		    ia->ia_msize  = msize;
		    return 1;
		}
	    }
	}

	bus_space_unmap(ia->ia_iot, ioh, LEMAC_IOSIZE);
    }

    return 0;
}

static void
lemac_isa_attach(
    struct device *parent,
    struct device *self,
    void *aux)
{
    lemac_softc_t *sc = (void *)self;
    struct isa_attach_args *ia = aux;

    /* Map i/o space. */
    sc->sc_iot = ia->ia_iot;
    if (bus_space_map(sc->sc_iot, ia->ia_iobase, ia->ia_iosize, 0, &sc->sc_ioh))
	panic("\n%s: can't map i/o space 0x%x-0x%x\n",
	      sc->sc_dv.dv_xname,
	      ia->ia_iobase, ia->ia_iobase + ia->ia_iosize - 1);

    if (ia->ia_msize && ia->ia_maddr) {
	sc->sc_memt = ia->ia_memt;
	/* Map memory space. */
	if (bus_space_map(sc->sc_memt, ia->ia_maddr, ia->ia_msize, 0, &sc->sc_memh))
	    panic("\n%s: can't map iomem space 0x%x-0x%x\n",
		  sc->sc_dv.dv_xname,
		  ia->ia_maddr, ia->ia_maddr + ia->ia_msize - 1);
    }

    sc->sc_ats = shutdownhook_establish(lemac_shutdown, sc);
    if (sc->sc_ats == NULL)
	printf("\n%s: warning: couldn't establish shutdown hook\n",
	       sc->sc_dv.dv_xname);

    lemac_ifattach(sc);

    sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
				   IPL_NET, lemac_intr, sc);
}

struct cfattach lc_isa_ca = {
    sizeof(lemac_softc_t), lemac_isa_probe, lemac_isa_attach
};