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if_le_isa.c revision 1.46.4.1
      1  1.46.4.1      yamt /*	$NetBSD: if_le_isa.c,v 1.46.4.1 2008/05/16 02:24:27 yamt Exp $	*/
      2      1.11   thorpej 
      3      1.11   thorpej /*-
      4      1.23   mycroft  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
      5      1.11   thorpej  * All rights reserved.
      6      1.11   thorpej  *
      7      1.11   thorpej  * This code is derived from software contributed to The NetBSD Foundation
      8      1.23   mycroft  * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
      9      1.23   mycroft  * Simulation Facility, NASA Ames Research Center.
     10      1.11   thorpej  *
     11      1.11   thorpej  * Redistribution and use in source and binary forms, with or without
     12      1.11   thorpej  * modification, are permitted provided that the following conditions
     13      1.11   thorpej  * are met:
     14      1.11   thorpej  * 1. Redistributions of source code must retain the above copyright
     15      1.11   thorpej  *    notice, this list of conditions and the following disclaimer.
     16      1.11   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     17      1.11   thorpej  *    notice, this list of conditions and the following disclaimer in the
     18      1.11   thorpej  *    documentation and/or other materials provided with the distribution.
     19      1.11   thorpej  *
     20      1.11   thorpej  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     21      1.11   thorpej  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22      1.11   thorpej  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23      1.11   thorpej  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     24      1.11   thorpej  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     25      1.11   thorpej  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     26      1.11   thorpej  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     27      1.11   thorpej  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     28      1.11   thorpej  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     29      1.11   thorpej  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     30      1.11   thorpej  * POSSIBILITY OF SUCH DAMAGE.
     31      1.11   thorpej  */
     32       1.1   thorpej 
     33       1.1   thorpej /*-
     34       1.1   thorpej  * Copyright (c) 1992, 1993
     35       1.1   thorpej  *	The Regents of the University of California.  All rights reserved.
     36       1.1   thorpej  *
     37       1.1   thorpej  * This code is derived from software contributed to Berkeley by
     38       1.1   thorpej  * Ralph Campbell and Rick Macklem.
     39       1.1   thorpej  *
     40       1.1   thorpej  * Redistribution and use in source and binary forms, with or without
     41       1.1   thorpej  * modification, are permitted provided that the following conditions
     42       1.1   thorpej  * are met:
     43       1.1   thorpej  * 1. Redistributions of source code must retain the above copyright
     44       1.1   thorpej  *    notice, this list of conditions and the following disclaimer.
     45       1.1   thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     46       1.1   thorpej  *    notice, this list of conditions and the following disclaimer in the
     47       1.1   thorpej  *    documentation and/or other materials provided with the distribution.
     48      1.35       agc  * 3. Neither the name of the University nor the names of its contributors
     49       1.1   thorpej  *    may be used to endorse or promote products derived from this software
     50       1.1   thorpej  *    without specific prior written permission.
     51       1.1   thorpej  *
     52       1.1   thorpej  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     53       1.1   thorpej  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     54       1.1   thorpej  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     55       1.1   thorpej  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     56       1.1   thorpej  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     57       1.1   thorpej  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     58       1.1   thorpej  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     59       1.1   thorpej  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     60       1.1   thorpej  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     61       1.1   thorpej  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     62       1.1   thorpej  * SUCH DAMAGE.
     63       1.1   thorpej  *
     64       1.1   thorpej  *	@(#)if_le.c	8.2 (Berkeley) 11/16/93
     65       1.1   thorpej  */
     66      1.28     lukem 
     67      1.28     lukem #include <sys/cdefs.h>
     68  1.46.4.1      yamt __KERNEL_RCSID(0, "$NetBSD: if_le_isa.c,v 1.46.4.1 2008/05/16 02:24:27 yamt Exp $");
     69       1.1   thorpej 
     70       1.1   thorpej #include <sys/param.h>
     71       1.1   thorpej #include <sys/systm.h>
     72       1.1   thorpej #include <sys/mbuf.h>
     73       1.1   thorpej #include <sys/syslog.h>
     74       1.1   thorpej #include <sys/socket.h>
     75       1.1   thorpej #include <sys/device.h>
     76       1.1   thorpej 
     77      1.25   thorpej #include <uvm/uvm_extern.h>
     78      1.25   thorpej 
     79       1.1   thorpej #include <net/if.h>
     80       1.9        is #include <net/if_ether.h>
     81      1.10   thorpej #include <net/if_media.h>
     82       1.1   thorpej 
     83      1.45        ad #include <sys/cpu.h>
     84      1.45        ad #include <sys/intr.h>
     85      1.45        ad #include <sys/bus.h>
     86       1.1   thorpej 
     87       1.1   thorpej #include <dev/isa/isareg.h>
     88       1.1   thorpej #include <dev/isa/isavar.h>
     89       1.1   thorpej #include <dev/isa/isadmavar.h>
     90       1.1   thorpej 
     91      1.22  drochner #include <dev/ic/lancereg.h>
     92      1.22  drochner #include <dev/ic/lancevar.h>
     93       1.1   thorpej #include <dev/ic/am7990reg.h>
     94       1.1   thorpej #include <dev/ic/am7990var.h>
     95       1.1   thorpej 
     96       1.1   thorpej #include <dev/isa/if_levar.h>
     97       1.1   thorpej 
     98      1.46   tsutsui int ne2100_isa_probe(device_t, cfdata_t, void *);
     99      1.46   tsutsui int bicc_isa_probe(device_t, cfdata_t, void *);
    100      1.46   tsutsui void le_dummyattach(device_t, device_t, void *);
    101      1.46   tsutsui int le_dummyprobe(device_t, cfdata_t, void *);
    102      1.46   tsutsui void le_ne2100_attach(device_t, device_t, void *);
    103      1.46   tsutsui void le_bicc_attach(device_t, device_t, void *);
    104      1.17  drochner 
    105      1.46   tsutsui CFATTACH_DECL_NEW(nele, 0,
    106      1.33   thorpej     ne2100_isa_probe, le_dummyattach, NULL, NULL);
    107      1.33   thorpej 
    108      1.46   tsutsui CFATTACH_DECL_NEW(le_nele, sizeof(struct le_softc),
    109      1.33   thorpej     le_dummyprobe, le_ne2100_attach, NULL, NULL);
    110      1.33   thorpej 
    111      1.46   tsutsui CFATTACH_DECL_NEW(bicc, 0,
    112      1.33   thorpej     bicc_isa_probe, le_dummyattach, NULL, NULL);
    113      1.33   thorpej 
    114      1.46   tsutsui CFATTACH_DECL_NEW(le_bicc, sizeof(struct le_softc),
    115      1.33   thorpej     le_dummyprobe, le_bicc_attach, NULL, NULL);
    116       1.1   thorpej 
    117      1.17  drochner struct le_isa_params {
    118      1.39  christos 	const char *name;
    119      1.17  drochner 	int iosize, rap, rdp;
    120      1.17  drochner 	int macstart, macstride;
    121      1.17  drochner } ne2100_params = {
    122      1.17  drochner 	"NE2100",
    123      1.17  drochner 	24, NE2100_RAP, NE2100_RDP,
    124      1.17  drochner 	0, 1
    125      1.17  drochner }, bicc_params = {
    126      1.17  drochner 	"BICC Isolan",
    127      1.17  drochner 	16, BICC_RAP, BICC_RDP,
    128      1.17  drochner 	0, 2
    129       1.1   thorpej };
    130       1.1   thorpej 
    131      1.37     perry int lance_isa_probe(struct isa_attach_args *, struct le_isa_params *, int);
    132      1.37     perry void le_isa_attach(struct device *, struct le_softc *,
    133      1.46   tsutsui     struct isa_attach_args *, struct le_isa_params *);
    134       1.1   thorpej 
    135      1.37     perry int le_isa_intredge(void *);
    136       1.1   thorpej 
    137      1.26       mrg #if defined(_KERNEL_OPT)
    138      1.22  drochner #include "opt_ddb.h"
    139      1.22  drochner #endif
    140      1.22  drochner 
    141      1.22  drochner #ifdef DDB
    142      1.22  drochner #define	integrate
    143      1.22  drochner #define hide
    144      1.22  drochner #else
    145      1.41     perry #define	integrate	static inline
    146      1.22  drochner #define hide		static
    147      1.22  drochner #endif
    148      1.22  drochner 
    149      1.46   tsutsui hide void le_isa_wrcsr(struct lance_softc *, uint16_t, uint16_t);
    150      1.46   tsutsui hide uint16_t le_isa_rdcsr(struct lance_softc *, uint16_t);
    151       1.1   thorpej 
    152      1.11   thorpej #define	LE_ISA_MEMSIZE	16384
    153      1.11   thorpej 
    154       1.1   thorpej hide void
    155      1.46   tsutsui le_isa_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
    156       1.1   thorpej {
    157       1.6   thorpej 	struct le_softc *lesc = (struct le_softc *)sc;
    158       1.6   thorpej 	bus_space_tag_t iot = lesc->sc_iot;
    159       1.6   thorpej 	bus_space_handle_t ioh = lesc->sc_ioh;
    160       1.1   thorpej 
    161       1.6   thorpej 	bus_space_write_2(iot, ioh, lesc->sc_rap, port);
    162       1.6   thorpej 	bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
    163       1.1   thorpej }
    164       1.1   thorpej 
    165      1.46   tsutsui hide uint16_t
    166      1.46   tsutsui le_isa_rdcsr(struct lance_softc *sc, uint16_t port)
    167       1.1   thorpej {
    168       1.6   thorpej 	struct le_softc *lesc = (struct le_softc *)sc;
    169       1.6   thorpej 	bus_space_tag_t iot = lesc->sc_iot;
    170      1.38     perry 	bus_space_handle_t ioh = lesc->sc_ioh;
    171      1.46   tsutsui 	uint16_t val;
    172       1.1   thorpej 
    173       1.6   thorpej 	bus_space_write_2(iot, ioh, lesc->sc_rap, port);
    174      1.38     perry 	val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
    175       1.1   thorpej 	return (val);
    176       1.1   thorpej }
    177       1.1   thorpej 
    178       1.1   thorpej int
    179      1.46   tsutsui ne2100_isa_probe(device_t parent, cfdata_t cf, void *aux)
    180       1.1   thorpej {
    181      1.46   tsutsui 
    182      1.46   tsutsui 	return (lance_isa_probe(aux, &ne2100_params, cf->cf_flags));
    183      1.17  drochner }
    184      1.14   thorpej 
    185      1.17  drochner int
    186      1.46   tsutsui bicc_isa_probe(device_t parent, cfdata_t cf, void *aux)
    187      1.17  drochner {
    188      1.46   tsutsui 
    189      1.46   tsutsui 	return (lance_isa_probe(aux, &bicc_params, cf->cf_flags));
    190       1.1   thorpej }
    191       1.1   thorpej 
    192      1.17  drochner /*
    193      1.17  drochner  * Determine which chip is present on the card.
    194      1.17  drochner  */
    195       1.1   thorpej int
    196      1.46   tsutsui lance_isa_probe(struct isa_attach_args *ia, struct le_isa_params *p, int flags)
    197       1.1   thorpej {
    198       1.6   thorpej 	bus_space_tag_t iot = ia->ia_iot;
    199       1.6   thorpej 	bus_space_handle_t ioh;
    200      1.17  drochner 	int rap, rdp;
    201      1.17  drochner 	int rv = 0;
    202      1.17  drochner 
    203      1.29   thorpej 	if (ia->ia_nio < 1)
    204      1.29   thorpej 		return (0);
    205      1.29   thorpej 	if (ia->ia_nirq < 1)
    206      1.29   thorpej 		return (0);
    207      1.29   thorpej 	if (ia->ia_ndrq < 1)
    208      1.29   thorpej 		return (0);
    209      1.29   thorpej 
    210      1.29   thorpej 	if (ISA_DIRECT_CONFIG(ia))
    211      1.29   thorpej 		return (0);
    212      1.29   thorpej 
    213      1.17  drochner 	/* Disallow wildcarded i/o address. */
    214      1.36  drochner 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
    215      1.29   thorpej 		return (0);
    216      1.36  drochner 	if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
    217      1.29   thorpej 		return (0);
    218      1.38     perry 	if ((flags & LANCEISA_FLAG_LOCALBUS) == 0 &&
    219      1.36  drochner 	    ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
    220      1.17  drochner 		return (0);
    221       1.1   thorpej 
    222       1.6   thorpej 	/* Map i/o space. */
    223      1.29   thorpej 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh))
    224      1.17  drochner 		return (0);
    225       1.6   thorpej 
    226      1.17  drochner 	rap = p->rap;
    227      1.17  drochner 	rdp = p->rdp;
    228       1.6   thorpej 
    229      1.17  drochner 	/* Stop the LANCE chip and put it in a known state. */
    230      1.17  drochner 	bus_space_write_2(iot, ioh, rap, LE_CSR0);
    231      1.17  drochner 	bus_space_write_2(iot, ioh, rdp, LE_C0_STOP);
    232      1.17  drochner 	delay(100);
    233      1.12   mycroft 
    234      1.17  drochner 	bus_space_write_2(iot, ioh, rap, LE_CSR0);
    235      1.17  drochner 	if (bus_space_read_2(iot, ioh, rdp) != LE_C0_STOP)
    236       1.6   thorpej 		goto bad;
    237       1.6   thorpej 
    238      1.17  drochner 	bus_space_write_2(iot, ioh, rap, LE_CSR3);
    239      1.17  drochner 	bus_space_write_2(iot, ioh, rdp, 0);
    240       1.6   thorpej 
    241      1.29   thorpej 	ia->ia_nio = 1;
    242      1.29   thorpej 	ia->ia_io[0].ir_size = p->iosize;
    243      1.29   thorpej 
    244      1.29   thorpej 	ia->ia_nirq = 1;
    245      1.31     rafal 
    246      1.31     rafal 	if ((flags & LANCEISA_FLAG_LOCALBUS) != 0 &&
    247      1.36  drochner 	    ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
    248      1.31     rafal 	    ia->ia_ndrq = 0;
    249      1.31     rafal 	else
    250      1.31     rafal 	    ia->ia_ndrq = 1;
    251      1.29   thorpej 
    252      1.29   thorpej 	ia->ia_niomem = 0;
    253      1.29   thorpej 
    254      1.17  drochner 	rv = 1;
    255       1.1   thorpej 
    256      1.17  drochner bad:
    257      1.17  drochner 	bus_space_unmap(iot, ioh, p->iosize);
    258      1.17  drochner 	return (rv);
    259      1.17  drochner }
    260       1.1   thorpej 
    261      1.17  drochner void
    262      1.46   tsutsui le_dummyattach(device_t parent, device_t self, void *aux)
    263      1.17  drochner {
    264      1.46   tsutsui 
    265      1.46   tsutsui 	aprint_normal("\n");
    266       1.1   thorpej 
    267      1.17  drochner 	config_found(self, aux, 0);
    268      1.17  drochner }
    269       1.1   thorpej 
    270      1.17  drochner int
    271      1.46   tsutsui le_dummyprobe(device_t parent, cfdata_t cf, void *aux)
    272      1.17  drochner {
    273      1.46   tsutsui 
    274      1.17  drochner 	return (1);
    275      1.17  drochner }
    276       1.1   thorpej 
    277      1.17  drochner void
    278      1.46   tsutsui le_ne2100_attach(device_t parent, device_t self, void *aux)
    279      1.17  drochner {
    280      1.46   tsutsui 	struct le_softc *lesc = device_private(self);
    281      1.46   tsutsui 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
    282      1.46   tsutsui 
    283      1.46   tsutsui 	sc->sc_dev = self;
    284      1.46   tsutsui 	le_isa_attach(parent, lesc, aux, &ne2100_params);
    285      1.17  drochner }
    286       1.1   thorpej 
    287      1.17  drochner void
    288      1.46   tsutsui le_bicc_attach(device_t parent, device_t self, void *aux)
    289      1.17  drochner {
    290      1.46   tsutsui 	struct le_softc *lesc = device_private(self);
    291      1.46   tsutsui 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
    292      1.46   tsutsui 
    293      1.46   tsutsui 	sc->sc_dev = self;
    294      1.46   tsutsui 	le_isa_attach(parent, lesc, aux, &bicc_params);
    295       1.1   thorpej }
    296       1.1   thorpej 
    297      1.17  drochner void
    298      1.43  christos le_isa_attach(struct device *parent, struct le_softc *lesc,
    299      1.42  christos     struct isa_attach_args *ia, struct le_isa_params *p)
    300       1.1   thorpej {
    301      1.22  drochner 	struct lance_softc *sc = &lesc->sc_am7990.lsc;
    302       1.6   thorpej 	bus_space_tag_t iot = ia->ia_iot;
    303       1.6   thorpej 	bus_space_handle_t ioh;
    304      1.18  drochner 	bus_dma_tag_t dmat = ia->ia_dmat;
    305      1.17  drochner 	bus_dma_segment_t seg;
    306      1.20   thorpej 	int i, rseg, error;
    307       1.1   thorpej 
    308      1.46   tsutsui 	aprint_normal(": %s Ethernet\n", p->name);
    309       1.6   thorpej 
    310      1.30     rafal 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh))
    311      1.46   tsutsui 		panic("%s: can't map io", device_xname(sc->sc_dev));
    312       1.1   thorpej 
    313       1.1   thorpej 	/*
    314       1.1   thorpej 	 * Extract the physical MAC address from the ROM.
    315       1.1   thorpej 	 */
    316       1.9        is 	for (i = 0; i < sizeof(sc->sc_enaddr); i++)
    317      1.17  drochner 		sc->sc_enaddr[i] =
    318      1.17  drochner 		    bus_space_read_1(iot, ioh, p->macstart + i * p->macstride);
    319       1.6   thorpej 
    320       1.7   thorpej 	lesc->sc_iot = iot;
    321       1.7   thorpej 	lesc->sc_ioh = ioh;
    322      1.18  drochner 	lesc->sc_dmat = dmat;
    323      1.17  drochner 	lesc->sc_rap = p->rap;
    324      1.17  drochner 	lesc->sc_rdp = p->rdp;
    325       1.1   thorpej 
    326       1.1   thorpej 	/*
    327      1.17  drochner 	 * Allocate a DMA area for the card.
    328       1.1   thorpej 	 */
    329      1.25   thorpej 	if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
    330      1.17  drochner 			     &rseg, BUS_DMA_NOWAIT)) {
    331      1.46   tsutsui 		aprint_error_dev(sc->sc_dev,
    332      1.46   tsutsui 		    "couldn't allocate memory for card\n");
    333      1.17  drochner 		return;
    334      1.17  drochner 	}
    335      1.17  drochner 	if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE,
    336      1.44  christos 			   (void **)&sc->sc_mem,
    337      1.17  drochner 			   BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
    338      1.46   tsutsui 		aprint_error_dev(sc->sc_dev, "couldn't map memory for card\n");
    339      1.17  drochner 		return;
    340      1.17  drochner 	}
    341       1.6   thorpej 
    342       1.6   thorpej 	/*
    343      1.17  drochner 	 * Create and load the DMA map for the DMA area.
    344       1.6   thorpej 	 */
    345      1.17  drochner 	if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1,
    346      1.17  drochner 			LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
    347      1.46   tsutsui 		aprint_error_dev(sc->sc_dev, "couldn't create DMA map\n");
    348      1.17  drochner 		bus_dmamem_free(dmat, &seg, rseg);
    349      1.17  drochner 		return;
    350      1.17  drochner 	}
    351      1.17  drochner 	if (bus_dmamap_load(dmat, lesc->sc_dmam,
    352      1.17  drochner 			sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
    353      1.46   tsutsui 		aprint_error_dev(sc->sc_dev, "coundn't load DMA map\n");
    354      1.17  drochner 		bus_dmamem_free(dmat, &seg, rseg);
    355      1.17  drochner 		return;
    356       1.1   thorpej 	}
    357       1.1   thorpej 
    358      1.17  drochner 	sc->sc_conf3 = 0;
    359      1.17  drochner 	sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
    360      1.17  drochner 	sc->sc_memsize = LE_ISA_MEMSIZE;
    361      1.17  drochner 
    362      1.22  drochner 	sc->sc_copytodesc = lance_copytobuf_contig;
    363      1.22  drochner 	sc->sc_copyfromdesc = lance_copyfrombuf_contig;
    364      1.22  drochner 	sc->sc_copytobuf = lance_copytobuf_contig;
    365      1.22  drochner 	sc->sc_copyfrombuf = lance_copyfrombuf_contig;
    366      1.22  drochner 	sc->sc_zerobuf = lance_zerobuf_contig;
    367       1.1   thorpej 
    368       1.1   thorpej 	sc->sc_rdcsr = le_isa_rdcsr;
    369       1.1   thorpej 	sc->sc_wrcsr = le_isa_wrcsr;
    370       1.1   thorpej 	sc->sc_hwinit = NULL;
    371       1.1   thorpej 
    372      1.31     rafal 	if (ia->ia_ndrq > 0) {
    373      1.38     perry 		if ((error = isa_dmacascade(ia->ia_ic,
    374      1.31     rafal 					    ia->ia_drq[0].ir_drq)) != 0) {
    375      1.46   tsutsui 			aprint_error_dev(sc->sc_dev,
    376      1.46   tsutsui 			    "unable to cascade DRQ, error = %d\n", error);
    377      1.31     rafal 			return;
    378      1.31     rafal 		}
    379      1.20   thorpej 	}
    380       1.1   thorpej 
    381      1.29   thorpej 	lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
    382      1.29   thorpej 	    IST_EDGE, IPL_NET, le_isa_intredge, sc);
    383      1.20   thorpej 
    384      1.46   tsutsui 	aprint_normal("%s", device_xname(sc->sc_dev));
    385      1.22  drochner 	am7990_config(&lesc->sc_am7990);
    386       1.1   thorpej }
    387       1.1   thorpej 
    388       1.1   thorpej /*
    389       1.1   thorpej  * Controller interrupt.
    390       1.1   thorpej  */
    391       1.3   thorpej int
    392      1.46   tsutsui le_isa_intredge(void *arg)
    393       1.1   thorpej {
    394       1.1   thorpej 
    395       1.1   thorpej 	if (am7990_intr(arg) == 0)
    396       1.1   thorpej 		return (0);
    397       1.1   thorpej 	for (;;)
    398       1.1   thorpej 		if (am7990_intr(arg) == 0)
    399       1.1   thorpej 			return (1);
    400       1.1   thorpej }
    401