527 lines
15 KiB
C
527 lines
15 KiB
C
/* $NetBSD: if_ne_pbus.c,v 1.1 1998/03/21 21:35:20 mark Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Mark Brinicombe of Causality Limited.
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*
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* EtherH code Copyright (c) 1998 Mike Pumford
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* This driver uses the generic ne2000 & dp8390 IC drivers
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*
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* Currently supports:
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* ANT EtherM network slot cards
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* ICubed EtherH network slot cards
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*/
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/*
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* TO DO List for this driver.
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*
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* EtherH - The driver currently relies on some part if the RISCOS driver
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* initialisation code to work correctly. This dependancy needs to be
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* removed.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/socket.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_ether.h>
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#include <net/if_media.h>
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#include <machine/bus.h>
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#include <machine/irqhandler.h>
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#include <machine/io.h>
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#include <dev/ic/dp8390reg.h>
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#include <dev/ic/dp8390var.h>
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#include <dev/ic/ne2000reg.h>
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#include <dev/ic/ne2000var.h>
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#include <arch/arm32/podulebus/podulebus.h>
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#include <arch/arm32/podulebus/podules.h>
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#include <arch/arm32/podulebus/if_ne_pbusreg.h>
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/*
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* ne_pbus_softc: ne2000_softc plus podule, interrupt and bs tag info
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*/
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struct ne_pbus_softc {
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struct ne2000_softc sc_ne2000; /* ne2000 softc */
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int sc_podule_number;
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podule_t *sc_podule;
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struct bus_space sc_tag; /* Patched tag */
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void *sc_ih; /* Interrupt handler */
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int sc_mediatype; /* Media Info */
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#define NE_MEDIA_AUTO 0
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#define NE_MEDIA_10BASET 1
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#define NE_MEDIA_10BASE2 2
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};
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/*
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* Attach data and prototypes for driver
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*/
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static int ne_pbus_probe __P((struct device *, struct cfdata *, void *));
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static void ne_pbus_attach __P((struct device *, struct device *, void *));
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struct cfattach ne_pbus_ca = {
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sizeof(struct ne_pbus_softc), ne_pbus_probe, ne_pbus_attach
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};
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/*
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* Prototypes for interface specific routines
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*/
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static u_int8_t *em_ea __P((struct ne_pbus_softc *sc, u_int8_t *buffer));
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static void em_postattach __P((struct ne_pbus_softc *sc));
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static void eh600_preattach __P((struct ne_pbus_softc *sc));
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static void eh600_postattach __P((struct ne_pbus_softc *sc));
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static u_int8_t *eh600_ea __P((struct ne_pbus_softc *sc, u_int8_t *buffer));
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/*
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* Define a structure to hold all the information required on an NE2000
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* clone interface.
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* We create an array of these structures to describe all the interfaces
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* that we can handle via the MI NE2000 driver.
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*/
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struct ne_clone {
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int manufacturer; /* podule manufacturer id */
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int product; /* podule product id */
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unsigned int cookie; /* podulebus space cookie */
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unsigned int nicbase; /* byte offset of NIC */
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unsigned int nicsize; /* size of NIC (regs) */
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unsigned int asicbase; /* byte offset of ASIC */
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unsigned int asicsize; /* size of ASIC (regs) */
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unsigned char nicspace; /* fast or mod space ? */
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unsigned char asicspace; /* fast or mod space ? */
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#define NE_SPACE_FAST 0
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#define NE_SPACE_MOD 1
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unsigned char reserved0; /* not used (padding) */
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unsigned char reserved1; /* not used (padding) */
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const char *name; /* name */
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u_int8_t * (*getea) /* do this to get the MAC */
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__P((struct ne_pbus_softc *sc, u_int8_t *buffer));
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void (*preattach) /* do this before attach */
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__P((struct ne_pbus_softc *sc));
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void (*postattach) /* do this after attach */
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__P((struct ne_pbus_softc *sc));
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} ne_clones[] = {
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/* ANT EtherM netslot interface */
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{
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MANUFACTURER_ANT, PODULE_ANT_ETHERM, EM_REGSHIFT,
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EM_NIC_OFFSET, EM_NIC_SIZE, EM_ASIC_OFFSET, EM_ASIC_SIZE,
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NE_SPACE_FAST, NE_SPACE_FAST, 0, 0,
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"EtherM", em_ea, NULL, em_postattach
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},
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/* ICubed EtherLan EtherH netslot interface */
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{
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MANUFACTURER_ICUBED, PODULE_ICUBED_ETHERLAN600, EH600_REGSHIFT,
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EH600_NIC_OFFSET, EH600_NIC_SIZE, EH600_ASIC_OFFSET, EH600_ASIC_SIZE,
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NE_SPACE_FAST, NE_SPACE_FAST, 0, 0,
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"EtherLan 600", eh600_ea, eh600_preattach, eh600_postattach
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},
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/* Acorn EtherLan EtherH netslot interface */
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{
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MANUFACTURER_ICUBED, PODULE_ICUBED_ETHERLAN600A, EH600_REGSHIFT,
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EH600_NIC_OFFSET, EH600_NIC_SIZE, EH600_ASIC_OFFSET, EH600_ASIC_SIZE,
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NE_SPACE_FAST, NE_SPACE_FAST, 0, 0,
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"EtherLan 600A", eh600_ea , eh600_preattach, eh600_postattach
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},
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};
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/*
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* Determine if the device is present.
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*/
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static int
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ne_pbus_probe(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct podule_attach_args *pa = (void *) aux;
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int loop;
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/* Scan the list of known interfaces looking for a match */
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for (loop = 0; loop < sizeof(ne_clones) / sizeof(struct ne_clone);
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++loop) {
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if (matchpodule(pa, ne_clones[loop].manufacturer,
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ne_clones[loop].product, 0) != 0)
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return(1);
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}
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return(0);
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}
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/*
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* Install interface into kernel networking data structures.
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*/
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static void
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ne_pbus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct podule_attach_args *pa = (void *)aux;
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struct ne_pbus_softc *npsc = (void *)self;
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struct ne2000_softc *nsc = &npsc->sc_ne2000;
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struct dp8390_softc *dsc = &nsc->sc_dp8390;
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struct ne_clone *ne = NULL;
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u_int8_t buffer[6];
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u_int8_t *myea;
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int loop;
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/* Check a few things about the attach args */
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if (pa->pa_podule_number == -1)
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panic("Podule has disappeared !");
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npsc->sc_podule_number = pa->pa_podule_number;
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npsc->sc_podule = pa->pa_podule;
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podules[npsc->sc_podule_number].attached = 1; /* XXX */
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/* Scan the list of known interfaces for a match */
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for (loop = 0; loop < sizeof(ne_clones) / sizeof(struct ne_clone);
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++loop) {
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if (IS_PODULE(pa, ne_clones[loop].manufacturer,
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ne_clones[loop].product)) {
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ne = &ne_clones[loop];
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break;
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}
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}
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#ifdef DIAGNOSTIC
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/* This should never fail as we must have matched at probe time */
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if (ne == NULL)
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panic("Podule has vanished\n");
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#endif
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/* Update the nic and asic base addresses appropriately */
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switch (ne->nicspace) {
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case NE_SPACE_MOD:
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ne->nicbase += npsc->sc_podule->mod_base;
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break;
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case NE_SPACE_FAST:
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default:
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ne->nicbase += npsc->sc_podule->fast_base;
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break;
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}
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switch (ne->asicspace) {
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case NE_SPACE_MOD:
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ne->asicbase += npsc->sc_podule->mod_base;
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break;
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case NE_SPACE_FAST:
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default:
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ne->asicbase += npsc->sc_podule->fast_base;
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break;
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}
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/* Report the interface name */
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printf(" %s ethernet\n", ne->name);
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/*
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* Ok we need our own bus tag as the register spacing
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* may not the default.
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*
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* For the podulebus, the bus tag cookie is the shift
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* to apply to registers
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* So duplicate the bus space tag and change the
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* cookie.
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*/
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npsc->sc_tag = *pa->pa_iot;
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npsc->sc_tag.bs_cookie = (void *) ne->cookie;
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dsc->sc_regt = &npsc->sc_tag;
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nsc->sc_asict = dsc->sc_regt;
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/* Map all the I/O space for the NIC */
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if (bus_space_map(dsc->sc_regt, ne->nicbase, ne->nicsize,
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0, &dsc->sc_regh)) {
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printf("%s: cannot map i/o space\n", dsc->sc_dev.dv_xname);
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return;
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}
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/* Map the I/O space for the ASIC */
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if (bus_space_map(nsc->sc_asict, ne->asicbase, ne->asicsize,
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0, &nsc->sc_asich)) {
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printf("%s: cannot map i/o space\n", dsc->sc_dev.dv_xname);
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return;
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}
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/* This interface is always enabled. */
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dsc->sc_enabled = 1;
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npsc->sc_mediatype = NE_MEDIA_AUTO; /* Default */
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/*
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* Now get the ethernet address in an interface specific manner if
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* specified
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*/
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if (ne->getea)
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myea = ne->getea(npsc, buffer);
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else
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myea = NULL;
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/* Does the interface need a preattach call ? */
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if (ne->preattach)
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ne->preattach(npsc);
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/*
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* Do generic NE2000 attach. This will read the station address
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* from the EEPROM.
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*/
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ne2000_attach(nsc, myea);
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/* Does the interface need a postattach call ? */
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if (ne->postattach)
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ne->postattach(npsc);
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/* Install an interrupt handler */
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npsc->sc_ih = intr_claim(npsc->sc_podule->interrupt, IPL_NET,
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"if_ne", dp8390_intr, dsc);
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if (npsc->sc_ih == NULL)
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panic("%s: Cannot install interrupt handler",
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dsc->sc_dev.dv_xname);
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}
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/*
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* em_ea()
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*
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* return the ethernet address for an EtherM netslot interface.
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* The EtherM interface uses the machines ethernet address so just
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* fill it out
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*/
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static u_int8_t *
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em_ea(sc, buffer)
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struct ne_pbus_softc *sc;
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u_int8_t *buffer;
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{
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/*
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* Use the podulebus netslot_ea() function to get the netslot
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* ethernet address. This is generated from the machine ID.
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*/
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netslot_ea(buffer);
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return(buffer);
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}
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/*
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* em_postattach()
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*
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* The EtherM interface has a Diagnostic Status register. After attaching
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* the driver, print out some more information using this register.
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*/
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static void
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em_postattach(sc)
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struct ne_pbus_softc *sc;
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{
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int dsr;
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/*
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* Report information from the Diagnostic Status Register for
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* the EtherM card
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*/
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printf("%s: 16KB buffer memory",
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sc->sc_ne2000.sc_dp8390.sc_dev.dv_xname);
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/* Get the Diagnostic Status Register */
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dsr = bus_space_read_1(sc->sc_ne2000.sc_asict,
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sc->sc_ne2000.sc_asich, EM_DSR_REG);
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/* Check for bits that indicate a fault */
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if (!(dsr & EM_DSR_20M))
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printf(", VCO faulty");
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if (!(dsr & EM_DSR_TCOK))
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printf(", TxClk faulty");
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/* Report status of card */
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if (dsr & EM_DSR_POL)
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printf(", UTP reverse polarity");
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if (dsr & EM_DSR_JAB)
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printf(", jabber");
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if (dsr & EM_DSR_LNK)
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printf(", link OK");
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if (dsr & EM_DSR_LBK)
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printf(", loopback");
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if (dsr & EM_DSR_UTP)
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printf(", UTP");
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printf("\n");
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}
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/*
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* eh600_preattach()
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*
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* Detect whether the BNC or UTP media attachment is being used.
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*/
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static void
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eh600_preattach(sc)
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struct ne_pbus_softc *sc;
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{
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u_int8_t tmp;
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bus_space_tag_t nict = sc->sc_ne2000.sc_dp8390.sc_regt;
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bus_space_handle_t nich = sc->sc_ne2000.sc_dp8390.sc_regh;
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/* now try and detect a UTP connection */
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tmp = bus_space_read_1(nict, nich, EH600_MCRB);
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tmp = (tmp & 0xf8) | EH600_10BTSEL;
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bus_space_write_1(nict, nich, EH600_MCRB, tmp);
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tmp = bus_space_read_1(nict, nich, EH600_MCRB);
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if ((tmp & 0x04) == 0x04)
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/* UTP link detected */
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sc->sc_mediatype = NE_MEDIA_10BASET;
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else {
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/* No UTP use BNC */
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tmp = (tmp & 0xf8) | EH600_10B2SEL;
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bus_space_write_1(nict, nich, EH600_MCRB, tmp);
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sc->sc_mediatype = NE_MEDIA_10BASE2;
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}
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}
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/*
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* eh600_postattach()
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*
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* Report the media connection detected in the preattach routine
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*/
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static void
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eh600_postattach(sc)
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struct ne_pbus_softc *sc;
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{
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printf("%s: using ", sc->sc_ne2000.sc_dp8390.sc_dev.dv_xname);
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if (sc->sc_mediatype == NE_MEDIA_10BASET)
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printf("10BaseT/UTP\n");
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else
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printf("10Base2/BNC\n");
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}
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/*
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* extracts the station address from the Podule description string.
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* The description has to be re-read here since the podule description
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* string is not always long enough to contain the full address.
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*
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* If for any reason we cannot extract the address this routine will
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* use netslot_ea() to return the generic address for the network slot.
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*/
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#define POD_READ(addr) \
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poduleread(podule->sync_base, addr, podule->slottype)
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static u_int8_t *
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eh600_ea(sc, buffer)
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struct ne_pbus_softc *sc;
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u_int8_t *buffer;
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{
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podule_t *podule = sc->sc_podule;
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u_int address;
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u_int id;
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address = 0x40;
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memset(buffer, 0, 6);
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/* read chunks from the podule */
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do {
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id = POD_READ(address);
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/* check for description chunk. */
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if (id == 0xf5) {
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u_int size;
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u_int pod_addr;
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int loop;
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/* read the size */
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size = POD_READ(address + 4);
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size |= (POD_READ(address + 8) << 8);
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size |= (POD_READ(address + 12) << 16);
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/* read address of description */
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pod_addr = POD_READ(address + 16);
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pod_addr |= (POD_READ(address + 20) << 8);
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pod_addr |= (POD_READ(address + 24) << 16);
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pod_addr |= (POD_READ(address + 28) << 24);
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if (pod_addr < 0x800) {
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u_int8_t tmp;
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int addr_index = 0;
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int found_ether = 0;
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/*
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* start scanning for ethernet address
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* which starts with a '('
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*/
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for (loop = 0; loop < size; ++loop) {
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if (found_ether) {
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/* we have found a '(' so start decoding the address */
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tmp = POD_READ((pod_addr + loop) * 4);
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if (tmp >= '0' && tmp <= '9') {
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buffer[addr_index >> 1] |= (tmp - '0') << ((addr_index & 1) ? 0 : 4);
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++addr_index;
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}
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else if (tmp >= 'a' && tmp <= 'f'){
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buffer[addr_index >> 1] |= (10 + (tmp - 'a')) << ((addr_index & 1) ? 0 : 4);
|
|
++addr_index;
|
|
}
|
|
else if (tmp >= 'A' && tmp <= 'F'){
|
|
buffer[addr_index >> 1] |= (10 + (tmp - 'A')) << ((addr_index & 1) ? 0 : 4);
|
|
++addr_index;
|
|
}
|
|
else if (tmp == ')') {
|
|
/* we have read the whole address so we can stop scanning
|
|
* the podule description */
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* we have found the start of the ethernet address (decode begins
|
|
* on the next run round the loop. */
|
|
if (POD_READ((pod_addr + loop) * 4) == '(') {
|
|
found_ether = 1;
|
|
}
|
|
}
|
|
/*
|
|
* Failed to find the address so fall back
|
|
* on the netslot address
|
|
*/
|
|
if (!found_ether)
|
|
netslot_ea(buffer);
|
|
return(buffer);
|
|
}
|
|
}
|
|
address += 32;
|
|
} while (id != 0 && address < 0x8000);
|
|
|
|
/*
|
|
* If we get here we failed to find the address
|
|
* In this case the best solution is to go with the netslot addrness
|
|
*/
|
|
netslot_ea(buffer);
|
|
return(buffer);
|
|
}
|