1054 lines
26 KiB
C
1054 lines
26 KiB
C
/*-
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* Copyright (c) 1982, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)if_le.c 8.1 (Berkeley) 6/11/93
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*
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* from: Header: if_le.c,v 1.23 93/04/21 02:39:38 torek Exp
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* $Id: if_le.c,v 1.3 1993/11/05 10:51:50 deraadt Exp $
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*/
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#include "bpfilter.h"
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/*
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* AMD 7990 LANCE
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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/systm.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/buf.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <sys/ioctl.h>
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#include <sys/malloc.h>
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#include <sys/errno.h>
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#include <net/if.h>
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#include <net/netisr.h>
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#include <net/route.h>
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#if NBPFILTER > 0
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#include <sys/select.h>
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#include <net/bpf.h>
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#include <net/bpfdesc.h>
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#endif
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/in_var.h>
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#include <netinet/ip.h>
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#include <netinet/if_ether.h>
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#endif
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#ifdef NS
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#endif
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#ifdef APPLETALK
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#include <netddp/atalk.h>
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#endif
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#include <machine/autoconf.h>
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#include <machine/cpu.h>
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#include <machine/pmap.h>
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#include <sparc/sbus/if_lereg.h>
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#include <sparc/sbus/sbusvar.h>
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/* DVMA address to LANCE address -- the Sbus/MMU will resupply the 0xff */
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#define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
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int ledebug = 0; /* console error messages */
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#ifdef PACKETSTATS
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long lexpacketsizes[LEMTU+1];
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long lerpacketsizes[LEMTU+1];
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#endif
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/* Per interface statistics */
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/* XXX this should go in something like if_levar.h */
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struct lestats {
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long lexints; /* transmitter interrupts */
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long lerints; /* receiver interrupts */
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long lerbufs; /* total buffers received during interrupts */
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long lerhits; /* times current rbuf was full */
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long lerscans; /* rbufs scanned before finding first full */
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};
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/*
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* Ethernet software status per interface.
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*
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* Each interface is referenced by a network interface structure,
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* le_if, which the routing code uses to locate the interface.
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* This structure contains the output queue for the interface, its address, ...
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*/
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struct le_softc {
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struct device sc_dev; /* base device */
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struct sbusdev sc_sd; /* sbus device */
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struct intrhand sc_ih; /* interrupt vectoring */
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struct evcnt sc_intrcnt; /* # of interrupts, per le */
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struct evcnt sc_errcnt; /* # of errors, per le */
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struct arpcom sc_ac; /* common Ethernet structures */
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#define sc_if sc_ac.ac_if /* network-visible interface */
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#define sc_addr sc_ac.ac_enaddr /* hardware Ethernet address */
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volatile struct lereg1 *sc_r1; /* LANCE registers */
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volatile struct lereg2 *sc_r2; /* dual-port RAM */
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int sc_rmd; /* predicted next rmd to process */
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int sc_runt;
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int sc_jab;
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int sc_merr;
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int sc_babl;
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int sc_cerr;
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int sc_miss;
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int sc_xint;
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int sc_xown;
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int sc_uflo;
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int sc_rxlen;
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int sc_rxoff;
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int sc_txoff;
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int sc_busy;
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short sc_iflags;
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struct lestats sc_lestats; /* per interface statistics */
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#if NBPFILTER > 0
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caddr_t sc_bpf;
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#endif
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};
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/* autoconfiguration driver */
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void leattach(struct device *, struct device *, void *);
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struct cfdriver lecd =
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{ NULL, "le", matchbyname, leattach, DV_IFNET, sizeof(struct le_softc) };
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/* Forwards */
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void leattach(struct device *, struct device *, void *);
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#ifdef MULTICAST
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void lesetladrf(struct le_softc *);
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#endif
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void lereset(struct device *);
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int leinit(int);
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int lestart(struct ifnet *);
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int leintr(void *);
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void lexint(struct le_softc *);
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void lerint(struct le_softc *);
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void leread(struct le_softc *, char *, int);
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int leput(char *, struct mbuf *);
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struct mbuf *leget(char *, int, int, struct ifnet *);
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int leioctl(struct ifnet *, int, caddr_t);
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void leerror(struct le_softc *, int);
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void lererror(struct le_softc *, char *);
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void lexerror(struct le_softc *);
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/*
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* Interface exists: make available by filling in network interface
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* record. System will initialize the interface when it is ready
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* to accept packets.
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*/
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void
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leattach(parent, self, args)
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struct device *parent;
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struct device *self;
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void *args;
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{
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register struct le_softc *sc = (struct le_softc *)self;
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register struct sbus_attach_args *sa = args;
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register volatile struct lereg2 *ler2;
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struct ifnet *ifp = &sc->sc_if;
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register struct bootpath *bp;
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register int a, pri;
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#define ISQUADALIGN(a) ((((long) a) & 0x3) == 0)
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/* XXX the following declarations should be elsewhere */
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extern void myetheraddr(u_char *);
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extern caddr_t dvma_malloc(size_t);
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if (sa->sa_ra.ra_nintr != 1) {
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printf(": expected 1 interrupt, got %d\n", sa->sa_ra.ra_nintr);
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return;
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}
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pri = sa->sa_ra.ra_intr[0].int_pri;
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printf(" pri %d", pri);
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sc->sc_r1 = (volatile struct lereg1 *)
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mapiodev(sa->sa_ra.ra_paddr, sizeof(struct lereg1));
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ler2 = sc->sc_r2 = (volatile struct lereg2 *)
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dvma_malloc(sizeof(struct lereg2));
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if (!ISQUADALIGN(ler2))
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printf("? not quad aligned (0x%x)\n", ler2);
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myetheraddr(sc->sc_addr);
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printf(": hardware address %s\n", ether_sprintf(sc->sc_addr));
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/*
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* Setup for transmit/receive
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*
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* According to Van, some versions of the Lance only use this
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* address to receive packets; it doesn't put them in
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* output packets. We'll want to make sure that lestart()
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* installs the address.
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*/
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ler2->ler2_padr[0] = sc->sc_addr[1];
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ler2->ler2_padr[1] = sc->sc_addr[0];
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ler2->ler2_padr[2] = sc->sc_addr[3];
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ler2->ler2_padr[3] = sc->sc_addr[2];
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ler2->ler2_padr[4] = sc->sc_addr[5];
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ler2->ler2_padr[5] = sc->sc_addr[4];
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a = LANCE_ADDR(&ler2->ler2_rmd);
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if (!ISQUADALIGN(a))
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printf("rdra not quad aligned (0x%x)\n", a);
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ler2->ler2_rlen = LE_RLEN | (a >> 16);
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ler2->ler2_rdra = a;
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a = LANCE_ADDR(&ler2->ler2_tmd);
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if (!ISQUADALIGN(a))
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printf("tdra not quad aligned (0x%x)\n", a);
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ler2->ler2_tlen = LE_TLEN | (a >> 16);
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ler2->ler2_tdra = a;
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/*
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* Link into sbus, and establish interrupt handler.
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*/
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sc->sc_sd.sd_reset = lereset;
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sbus_establish(&sc->sc_sd, &sc->sc_dev);
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sc->sc_ih.ih_fun = leintr;
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sc->sc_ih.ih_arg = sc;
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intr_establish(pri, &sc->sc_ih);
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/*
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* Set up event counters.
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*/
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evcnt_attach(&sc->sc_dev, "intr", &sc->sc_intrcnt);
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evcnt_attach(&sc->sc_dev, "errs", &sc->sc_errcnt);
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ifp->if_unit = sc->sc_dev.dv_unit;
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ifp->if_name = "le";
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ifp->if_mtu = ETHERMTU;
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ifp->if_ioctl = leioctl;
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ifp->if_output = ether_output;
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ifp->if_start = lestart;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX;
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#ifdef MULTICAST
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ifp->if_flags |= IFF_MULTICAST;
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#endif
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#ifdef IFF_NOTRAILERS
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/* XXX still compile when the blasted things are gone... */
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ifp->if_flags |= IFF_NOTRAILERS;
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#endif
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#if NBPFILTER > 0
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bpfattach(&sc->sc_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
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#endif
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if_attach(ifp);
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#define SAME_LANCE(bp, sa) \
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((bp->val[0] == sa->sa_slot && bp->val[1] == sa->sa_offset) || \
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(bp->val[0] == -1 && bp->val[1] == sc->sc_dev.dv_unit))
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bp = sa->sa_ra.ra_bp;
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if (bp != NULL && strcmp(bp->name, "le") == 0 && SAME_LANCE(bp, sa))
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bootdv = &sc->sc_dev;
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}
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#ifdef MULTICAST
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/*
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* Setup the logical address filter
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*/
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void
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lesetladrf(sc)
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register struct le_softc *sc;
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{
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register volatile struct lereg2 *ler2 = sc->sc_r2;
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register struct ifnet *ifp = &sc->sc_if;
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register struct ether_multi *enm;
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register u_char *cp, c;
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register u_long crc;
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register int i, len;
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struct ether_multistep step;
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/*
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* Set up multicast address filter by passing all multicast
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* addresses through a crc generator, and then using the high
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* order 6 bits as a index into the 64 bit logical address
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* filter. The high order two bits select the word, while the
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* rest of the bits select the bit within the word.
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*/
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ler2->ler2_ladrf[0] = 0;
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ler2->ler2_ladrf[1] = 0;
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ifp->if_flags &= ~IFF_ALLMULTI;
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ETHER_FIRST_MULTI(step, &sc->sc_ac, enm);
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while (enm != NULL) {
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if (bcmp((caddr_t)&enm->enm_addrlo,
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(caddr_t)&enm->enm_addrhi, sizeof(enm->enm_addrlo)) != 0) {
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/*
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* We must listen to a range of multicast
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* addresses. For now, just accept all
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* multicasts, rather than trying to set only
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* those filter bits needed to match the range.
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* (At this time, the only use of address
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* ranges is for IP multicast routing, for
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* which the range is big enough to require all
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* bits set.)
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*/
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ler2->ler2_ladrf[0] = 0xffffffff;
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ler2->ler2_ladrf[1] = 0xffffffff;
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ifp->if_flags |= IFF_ALLMULTI;
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return;
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}
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/*
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* One would think, given the AM7990 document's polynomial
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* of 0x04c11db6, that this should be 0x6db88320 (the bit
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* reversal of the AMD value), but that is not right. See
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* the BASIC listing: bit 0 (our bit 31) must then be set.
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*/
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cp = (unsigned char *)&enm->enm_addrlo;
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crc = 0xffffffff;
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for (len = 6; --len >= 0;) {
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c = *cp++;
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for (i = 0; i < 8; i++) {
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if ((c & 0x01) ^ (crc & 0x01)) {
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crc >>= 1;
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crc = crc ^ 0xedb88320;
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} else
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crc >>= 1;
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c >>= 1;
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}
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}
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/* Just want the 6 most significant bits. */
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crc = crc >> 26;
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/* Turn on the corresponding bit in the filter. */
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ler2->ler2_ladrf[crc >> 5] |= 1 << (crc & 0x1f);
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ETHER_NEXT_MULTI(step, enm);
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}
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}
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#endif /* MULTICAST */
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void
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lereset(dev)
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struct device *dev;
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{
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register struct le_softc *sc = (struct le_softc *)dev;
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register volatile struct lereg1 *ler1 = sc->sc_r1;
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register volatile struct lereg2 *ler2 = sc->sc_r2;
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register int i, a, timo, stat;
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#if NBPFILTER > 0
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if (sc->sc_if.if_flags & IFF_PROMISC)
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ler2->ler2_mode = LE_MODE_NORMAL | LE_MODE_PROM;
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else
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#endif
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ler2->ler2_mode = LE_MODE_NORMAL;
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ler1->ler1_rap = LE_CSR0;
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ler1->ler1_rdp = LE_C0_STOP;
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#ifdef MULTICAST
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/* Setup the logical address filter */
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lesetladrf(sc);
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#endif
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/* init receive and transmit rings */
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a = LANCE_ADDR(&ler2->ler2_rbuf[0][0]);
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if (!ISQUADALIGN(a))
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printf("rbuf not quad aligned (0x%x)\n", a);
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for (i = 0; i < LERBUF; i++) {
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a = LANCE_ADDR(&ler2->ler2_rbuf[i][0]);
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ler2->ler2_rmd[i].rmd0 = a;
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ler2->ler2_rmd[i].rmd1_hadr = a >> 16;
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ler2->ler2_rmd[i].rmd1_bits = LE_R1_OWN;
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ler2->ler2_rmd[i].rmd2 = -LEMTU;
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ler2->ler2_rmd[i].rmd3 = 0;
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}
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a = LANCE_ADDR(&ler2->ler2_tbuf[0][0]);
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if (!ISQUADALIGN(a))
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printf("tbuf not quad aligned (0x%x)\n", a);
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for (i = 0; i < LETBUF; i++) {
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a = LANCE_ADDR(&ler2->ler2_tbuf[i][0]);
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ler2->ler2_tmd[i].tmd0 = a;
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ler2->ler2_tmd[i].tmd1_hadr = a >> 16;
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ler2->ler2_tmd[i].tmd1_bits = 0;
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ler2->ler2_tmd[i].tmd2 = 0;
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ler2->ler2_tmd[i].tmd3 = 0;
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}
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bzero(&ler2->ler2_rbuf[0][0], (LERBUF + LETBUF) * LEMTU);
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/* lance will stuff packet into receive buffer 0 next */
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sc->sc_rmd = 0;
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/* tell the chip where to find the initialization block */
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a = LANCE_ADDR(&ler2->ler2_mode);
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ler1->ler1_rap = LE_CSR1;
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ler1->ler1_rdp = a;
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ler1->ler1_rap = LE_CSR2;
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ler1->ler1_rdp = a >> 16;
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ler1->ler1_rap = LE_CSR3;
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ler1->ler1_rdp = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
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ler1->ler1_rap = LE_CSR0;
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ler1->ler1_rdp = LE_C0_INIT;
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timo = 100000;
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while (((stat = ler1->ler1_rdp) & (LE_C0_ERR | LE_C0_IDON)) == 0) {
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if (--timo == 0) {
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printf("%s: init timeout, stat=%b\n",
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sc->sc_dev.dv_xname, stat, LE_C0_BITS);
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break;
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}
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}
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if (stat & LE_C0_ERR)
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printf("%s: init failed, stat=%b\n",
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sc->sc_dev.dv_xname, stat, LE_C0_BITS);
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else
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ler1->ler1_rdp = LE_C0_IDON; /* clear IDON */
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ler1->ler1_rdp = LE_C0_STRT | LE_C0_INEA;
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sc->sc_if.if_flags &= ~IFF_OACTIVE;
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}
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/*
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* Initialization of interface
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*/
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int
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leinit(unit)
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int unit;
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{
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register struct le_softc *sc = lecd.cd_devs[unit];
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register struct ifnet *ifp = &sc->sc_if;
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register int s;
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/* not yet, if address still unknown */
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if (ifp->if_addrlist == (struct ifaddr *)0)
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return (0);
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if ((ifp->if_flags & IFF_RUNNING) == 0) {
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s = splimp();
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ifp->if_flags |= IFF_RUNNING;
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lereset((struct device *)sc);
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lestart(ifp);
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splx(s);
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}
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return (0);
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}
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/*
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* Start output on interface. Get another datagram to send
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* off of the interface queue, and copy it to the interface
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* before starting the output.
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*/
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int
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lestart(ifp)
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register struct ifnet *ifp;
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|
{
|
|
register struct le_softc *sc = lecd.cd_devs[ifp->if_unit];
|
|
register volatile struct letmd *tmd;
|
|
register struct mbuf *m;
|
|
register int len;
|
|
|
|
if ((sc->sc_if.if_flags & IFF_RUNNING) == 0)
|
|
return (0);
|
|
IF_DEQUEUE(&sc->sc_if.if_snd, m);
|
|
if (m == 0)
|
|
return (0);
|
|
len = leput(sc->sc_r2->ler2_tbuf[0], m);
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* If bpf is listening on this interface, let it
|
|
* see the packet before we commit it to the wire.
|
|
*/
|
|
if (sc->sc_bpf)
|
|
bpf_tap(sc->sc_bpf, sc->sc_r2->ler2_tbuf[0], len);
|
|
#endif
|
|
|
|
#ifdef PACKETSTATS
|
|
if (len <= LEMTU)
|
|
lexpacketsizes[len]++;
|
|
#endif
|
|
tmd = sc->sc_r2->ler2_tmd;
|
|
tmd->tmd3 = 0;
|
|
tmd->tmd2 = -len;
|
|
tmd->tmd1_bits = LE_T1_OWN | LE_T1_STP | LE_T1_ENP;
|
|
sc->sc_if.if_flags |= IFF_OACTIVE;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
leintr(dev)
|
|
register void *dev;
|
|
{
|
|
register struct le_softc *sc = dev;
|
|
register volatile struct lereg1 *ler1 = sc->sc_r1;
|
|
register int csr0;
|
|
|
|
csr0 = ler1->ler1_rdp;
|
|
if ((csr0 & LE_C0_INTR) == 0)
|
|
return (0);
|
|
sc->sc_intrcnt.ev_count++;
|
|
|
|
if (csr0 & LE_C0_ERR) {
|
|
sc->sc_errcnt.ev_count++;
|
|
leerror(sc, csr0);
|
|
if (csr0 & LE_C0_MERR) {
|
|
sc->sc_merr++;
|
|
lereset((struct device *)sc);
|
|
return (1);
|
|
}
|
|
if (csr0 & LE_C0_BABL)
|
|
sc->sc_babl++;
|
|
if (csr0 & LE_C0_CERR)
|
|
sc->sc_cerr++;
|
|
if (csr0 & LE_C0_MISS)
|
|
sc->sc_miss++;
|
|
ler1->ler1_rdp = LE_C0_BABL|LE_C0_CERR|LE_C0_MISS|LE_C0_INEA;
|
|
}
|
|
if ((csr0 & LE_C0_RXON) == 0) {
|
|
sc->sc_rxoff++;
|
|
lereset((struct device *)sc);
|
|
return (1);
|
|
}
|
|
if ((csr0 & LE_C0_TXON) == 0) {
|
|
sc->sc_txoff++;
|
|
lereset((struct device *)sc);
|
|
return (1);
|
|
}
|
|
if (csr0 & LE_C0_RINT) {
|
|
/* interrupt is cleared in lerint */
|
|
lerint(sc);
|
|
}
|
|
if (csr0 & LE_C0_TINT) {
|
|
ler1->ler1_rdp = LE_C0_TINT|LE_C0_INEA;
|
|
lexint(sc);
|
|
}
|
|
return (1);
|
|
}
|
|
|
|
/*
|
|
* Ethernet interface transmitter interrupt.
|
|
* Start another output if more data to send.
|
|
*/
|
|
void
|
|
lexint(sc)
|
|
register struct le_softc *sc;
|
|
{
|
|
register volatile struct letmd *tmd = sc->sc_r2->ler2_tmd;
|
|
|
|
sc->sc_lestats.lexints++;
|
|
if ((sc->sc_if.if_flags & IFF_OACTIVE) == 0) {
|
|
sc->sc_xint++;
|
|
return;
|
|
}
|
|
if (tmd->tmd1_bits & LE_T1_OWN) {
|
|
sc->sc_xown++;
|
|
return;
|
|
}
|
|
if (tmd->tmd1_bits & LE_T1_ERR) {
|
|
err:
|
|
lexerror(sc);
|
|
sc->sc_if.if_oerrors++;
|
|
if (tmd->tmd3 & (LE_T3_BUFF|LE_T3_UFLO)) {
|
|
sc->sc_uflo++;
|
|
lereset((struct device *)sc);
|
|
} else if (tmd->tmd3 & LE_T3_LCOL)
|
|
sc->sc_if.if_collisions++;
|
|
else if (tmd->tmd3 & LE_T3_RTRY)
|
|
sc->sc_if.if_collisions += 16;
|
|
}
|
|
else if (tmd->tmd3 & LE_T3_BUFF)
|
|
/* XXX documentation says BUFF not included in ERR */
|
|
goto err;
|
|
else if (tmd->tmd1_bits & LE_T1_ONE)
|
|
sc->sc_if.if_collisions++;
|
|
else if (tmd->tmd1_bits & LE_T1_MORE)
|
|
/* what is the real number? */
|
|
sc->sc_if.if_collisions += 2;
|
|
else
|
|
sc->sc_if.if_opackets++;
|
|
sc->sc_if.if_flags &= ~IFF_OACTIVE;
|
|
lestart(&sc->sc_if);
|
|
}
|
|
|
|
#define LENEXTRMP \
|
|
if (++bix == LERBUF) bix = 0, rmd = sc->sc_r2->ler2_rmd; else ++rmd
|
|
|
|
/*
|
|
* Ethernet interface receiver interrupt.
|
|
* If input error just drop packet.
|
|
* Decapsulate packet based on type and pass to type specific
|
|
* higher-level input routine.
|
|
*/
|
|
void
|
|
lerint(sc)
|
|
register struct le_softc *sc;
|
|
{
|
|
register int bix = sc->sc_rmd;
|
|
register volatile struct lermd *rmd = &sc->sc_r2->ler2_rmd[bix];
|
|
|
|
sc->sc_lestats.lerints++;
|
|
/*
|
|
* Out of sync with hardware, should never happen?
|
|
*/
|
|
if (rmd->rmd1_bits & LE_R1_OWN) {
|
|
do {
|
|
sc->sc_lestats.lerscans++;
|
|
LENEXTRMP;
|
|
} while ((rmd->rmd1_bits & LE_R1_OWN) && bix != sc->sc_rmd);
|
|
if (bix == sc->sc_rmd)
|
|
printf("%s: RINT with no buffer\n",
|
|
sc->sc_dev.dv_xname);
|
|
} else
|
|
sc->sc_lestats.lerhits++;
|
|
|
|
/*
|
|
* Process all buffers with valid data
|
|
*/
|
|
while ((rmd->rmd1_bits & LE_R1_OWN) == 0) {
|
|
int len = rmd->rmd3;
|
|
|
|
/* Clear interrupt to avoid race condition */
|
|
sc->sc_r1->ler1_rdp = LE_C0_RINT|LE_C0_INEA;
|
|
|
|
if (rmd->rmd1_bits & LE_R1_ERR) {
|
|
sc->sc_rmd = bix;
|
|
lererror(sc, "bad packet");
|
|
sc->sc_if.if_ierrors++;
|
|
} else if ((rmd->rmd1_bits & (LE_R1_STP|LE_R1_ENP)) !=
|
|
(LE_R1_STP|LE_R1_ENP)) {
|
|
/* XXX make a define for LE_R1_STP|LE_R1_ENP? */
|
|
/*
|
|
* Find the end of the packet so we can see how long
|
|
* it was. We still throw it away.
|
|
*/
|
|
do {
|
|
sc->sc_r1->ler1_rdp = LE_C0_RINT|LE_C0_INEA;
|
|
rmd->rmd3 = 0;
|
|
rmd->rmd1_bits = LE_R1_OWN;
|
|
LENEXTRMP;
|
|
} while (!(rmd->rmd1_bits &
|
|
(LE_R1_OWN|LE_R1_ERR|LE_R1_STP|LE_R1_ENP)));
|
|
sc->sc_rmd = bix;
|
|
lererror(sc, "chained buffer");
|
|
sc->sc_rxlen++;
|
|
/*
|
|
* If search terminated without successful completion
|
|
* we reset the hardware (conservative).
|
|
*/
|
|
if ((rmd->rmd1_bits &
|
|
(LE_R1_OWN|LE_R1_ERR|LE_R1_STP|LE_R1_ENP)) !=
|
|
LE_R1_ENP) {
|
|
lereset((struct device *)sc);
|
|
return;
|
|
}
|
|
} else {
|
|
leread(sc, sc->sc_r2->ler2_rbuf[bix], len);
|
|
#ifdef PACKETSTATS
|
|
lerpacketsizes[len]++;
|
|
#endif
|
|
sc->sc_lestats.lerbufs++;
|
|
}
|
|
rmd->rmd3 = 0;
|
|
rmd->rmd1_bits = LE_R1_OWN;
|
|
LENEXTRMP;
|
|
}
|
|
sc->sc_rmd = bix;
|
|
}
|
|
|
|
void
|
|
leread(sc, pkt, len)
|
|
register struct le_softc *sc;
|
|
char *pkt;
|
|
int len;
|
|
{
|
|
register struct ether_header *et;
|
|
register struct ifnet *ifp = &sc->sc_if;
|
|
struct mbuf *m;
|
|
struct ifqueue *inq;
|
|
int flags;
|
|
|
|
ifp->if_ipackets++;
|
|
et = (struct ether_header *)pkt;
|
|
et->ether_type = ntohs((u_short)et->ether_type);
|
|
/* adjust input length to account for header and CRC */
|
|
len -= sizeof(struct ether_header) + 4;
|
|
|
|
if (len <= 0) {
|
|
if (ledebug)
|
|
log(LOG_WARNING,
|
|
"%s: ierror(runt packet): from %s: len=%d\n",
|
|
sc->sc_dev.dv_xname,
|
|
ether_sprintf(et->ether_shost), len);
|
|
sc->sc_runt++;
|
|
ifp->if_ierrors++;
|
|
return;
|
|
}
|
|
|
|
/* Setup mbuf flags we'll need later */
|
|
flags = 0;
|
|
if (bcmp((caddr_t)etherbroadcastaddr,
|
|
(caddr_t)et->ether_dhost, sizeof(etherbroadcastaddr)) == 0)
|
|
flags |= M_BCAST;
|
|
if (et->ether_dhost[0] & 1)
|
|
flags |= M_MCAST;
|
|
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* Check if there's a bpf filter listening on this interface.
|
|
* If so, hand off the raw packet to enet, then discard things
|
|
* not destined for us (but be sure to keep broadcast/multicast).
|
|
*/
|
|
if (sc->sc_bpf) {
|
|
bpf_tap(sc->sc_bpf, pkt, len + sizeof(struct ether_header));
|
|
if ((flags & (M_BCAST | M_MCAST)) == 0 &&
|
|
bcmp(et->ether_dhost, sc->sc_addr,
|
|
sizeof(et->ether_dhost)) != 0)
|
|
return;
|
|
}
|
|
#endif
|
|
m = leget(pkt, len, 0, ifp);
|
|
if (m == 0)
|
|
return;
|
|
|
|
/* XXX this code comes from ether_input() */
|
|
ifp->if_lastchange = time;
|
|
ifp->if_ibytes += m->m_pkthdr.len + sizeof (*et);
|
|
if (flags) {
|
|
m->m_flags |= flags;
|
|
ifp->if_imcasts++;
|
|
}
|
|
/* XXX end of code from ether_input() */
|
|
|
|
switch (et->ether_type) {
|
|
|
|
#ifdef INET
|
|
case ETHERTYPE_IP:
|
|
schednetisr(NETISR_IP);
|
|
inq = &ipintrq;
|
|
break;
|
|
|
|
case ETHERTYPE_ARP:
|
|
#ifdef NETISR_ARP
|
|
schednetisr(NETISR_ARP);
|
|
inq = &arpintrq;
|
|
break;
|
|
#else
|
|
arpinput((struct arpcom *)ifp, m);
|
|
return;
|
|
#endif /* NETISR_ARP */
|
|
#endif
|
|
#ifdef NS
|
|
case ETHERTYPE_NS:
|
|
schednetisr(NETISR_NS);
|
|
inq = &nsintrq;
|
|
break;
|
|
#endif
|
|
|
|
#ifdef UTAHONLY
|
|
#ifdef APPLETALK
|
|
case ETHERTYPE_APPLETALK:
|
|
schednetisr(NETISR_DDP);
|
|
inq = &ddpintq;
|
|
break;
|
|
|
|
case ETHERTYPE_AARP:
|
|
aarpinput(&sc->sc_ac, m);
|
|
return;
|
|
#endif
|
|
#endif
|
|
default:
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
|
|
if (IF_QFULL(inq)) {
|
|
IF_DROP(inq);
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
IF_ENQUEUE(inq, m);
|
|
}
|
|
|
|
/*
|
|
* Routine to copy from mbuf chain to transmit
|
|
* buffer in board local memory.
|
|
*
|
|
* ### this can be done by remapping in some cases
|
|
*/
|
|
int
|
|
leput(lebuf, m)
|
|
register char *lebuf;
|
|
register struct mbuf *m;
|
|
{
|
|
register struct mbuf *mp;
|
|
register int len, tlen = 0;
|
|
|
|
for (mp = m; mp; mp = mp->m_next) {
|
|
len = mp->m_len;
|
|
if (len == 0)
|
|
continue;
|
|
tlen += len;
|
|
bcopy(mtod(mp, char *), lebuf, len);
|
|
lebuf += len;
|
|
}
|
|
m_freem(m);
|
|
if (tlen < LEMINSIZE) {
|
|
bzero(lebuf, LEMINSIZE - tlen);
|
|
tlen = LEMINSIZE;
|
|
}
|
|
return (tlen);
|
|
}
|
|
|
|
/*
|
|
* Routine to copy from board local memory into mbufs.
|
|
*/
|
|
struct mbuf *
|
|
leget(lebuf, totlen, off0, ifp)
|
|
char *lebuf;
|
|
int totlen, off0;
|
|
struct ifnet *ifp;
|
|
{
|
|
register struct mbuf *m;
|
|
struct mbuf *top = 0, **mp = ⊤
|
|
register int off = off0, len;
|
|
register char *cp;
|
|
char *epkt;
|
|
|
|
lebuf += sizeof(struct ether_header);
|
|
cp = lebuf;
|
|
epkt = cp + totlen;
|
|
if (off) {
|
|
cp += off + 2 * sizeof(u_short);
|
|
totlen -= 2 * sizeof(u_short);
|
|
}
|
|
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0)
|
|
return (0);
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_pkthdr.len = totlen;
|
|
m->m_len = MHLEN;
|
|
|
|
while (totlen > 0) {
|
|
if (top) {
|
|
MGET(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0) {
|
|
m_freem(top);
|
|
return (0);
|
|
}
|
|
m->m_len = MLEN;
|
|
}
|
|
len = min(totlen, epkt - cp);
|
|
if (len >= MINCLSIZE) {
|
|
MCLGET(m, M_DONTWAIT);
|
|
if (m->m_flags & M_EXT)
|
|
m->m_len = len = min(len, MCLBYTES);
|
|
else
|
|
len = m->m_len;
|
|
} else {
|
|
/*
|
|
* Place initial small packet/header at end of mbuf.
|
|
*/
|
|
if (len < m->m_len) {
|
|
if (top == 0 && len + max_linkhdr <= m->m_len)
|
|
m->m_data += max_linkhdr;
|
|
m->m_len = len;
|
|
} else
|
|
len = m->m_len;
|
|
}
|
|
bcopy(cp, mtod(m, caddr_t), (unsigned)len);
|
|
cp += len;
|
|
*mp = m;
|
|
mp = &m->m_next;
|
|
totlen -= len;
|
|
if (cp == epkt)
|
|
cp = lebuf;
|
|
}
|
|
return (top);
|
|
}
|
|
|
|
/*
|
|
* Process an ioctl request.
|
|
*/
|
|
int
|
|
leioctl(ifp, cmd, data)
|
|
register struct ifnet *ifp;
|
|
int cmd;
|
|
caddr_t data;
|
|
{
|
|
register struct ifaddr *ifa;
|
|
register struct le_softc *sc = lecd.cd_devs[ifp->if_unit];
|
|
register volatile struct lereg1 *ler1;
|
|
int s = splimp(), error = 0;
|
|
|
|
switch (cmd) {
|
|
|
|
case SIOCSIFADDR:
|
|
ifa = (struct ifaddr *)data;
|
|
ifp->if_flags |= IFF_UP;
|
|
switch (ifa->ifa_addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
(void)leinit(ifp->if_unit); /* before arpwhohas */
|
|
((struct arpcom *)ifp)->ac_ipaddr =
|
|
IA_SIN(ifa)->sin_addr;
|
|
arpwhohas((struct arpcom *)ifp, &IA_SIN(ifa)->sin_addr);
|
|
break;
|
|
#endif
|
|
#ifdef NS
|
|
case AF_NS:
|
|
{
|
|
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
|
|
|
|
if (ns_nullhost(*ina))
|
|
ina->x_host = *(union ns_host *)(sc->sc_addr);
|
|
else {
|
|
/*
|
|
* The manual says we can't change the address
|
|
* while the receiver is armed,
|
|
* so reset everything
|
|
*/
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
bcopy((caddr_t)ina->x_host.c_host,
|
|
(caddr_t)sc->sc_addr, sizeof(sc->sc_addr));
|
|
}
|
|
(void)leinit(ifp->if_unit); /* does le_setaddr() */
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
(void)leinit(ifp->if_unit);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
ler1 = sc->sc_r1;
|
|
if ((ifp->if_flags & IFF_UP) == 0 &&
|
|
ifp->if_flags & IFF_RUNNING) {
|
|
ler1->ler1_rdp = LE_C0_STOP;
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
} else if (ifp->if_flags & IFF_UP &&
|
|
(ifp->if_flags & IFF_RUNNING) == 0)
|
|
(void)leinit(ifp->if_unit);
|
|
/*
|
|
* If the state of the promiscuous bit changes, the interface
|
|
* must be reset to effect the change.
|
|
*/
|
|
if (((ifp->if_flags ^ sc->sc_iflags) & IFF_PROMISC) &&
|
|
(ifp->if_flags & IFF_RUNNING)) {
|
|
sc->sc_iflags = ifp->if_flags;
|
|
lereset((struct device *)sc);
|
|
lestart(ifp);
|
|
}
|
|
break;
|
|
|
|
#ifdef MULTICAST
|
|
case SIOCADDMULTI:
|
|
error = ether_addmulti((struct ifreq *)data, &sc->sc_ac);
|
|
goto update_multicast;
|
|
|
|
case SIOCDELMULTI:
|
|
error = ether_delmulti((struct ifreq *)data, &sc->sc_ac);
|
|
update_multicast:
|
|
if (error == ENETRESET) {
|
|
/*
|
|
* Multicast list has changed; set the hardware
|
|
* filter accordingly.
|
|
*/
|
|
lereset((struct device *)sc);
|
|
error = 0;
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
error = EINVAL;
|
|
}
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
leerror(sc, stat)
|
|
register struct le_softc *sc;
|
|
int stat;
|
|
{
|
|
if (!ledebug)
|
|
return;
|
|
|
|
/*
|
|
* Not all transceivers implement heartbeat
|
|
* so we only log CERR once.
|
|
*/
|
|
if ((stat & LE_C0_CERR) && sc->sc_cerr)
|
|
return;
|
|
log(LOG_WARNING, "%s: error: stat=%b\n",
|
|
sc->sc_dev.dv_xname, stat, LE_C0_BITS);
|
|
}
|
|
|
|
void
|
|
lererror(sc, msg)
|
|
register struct le_softc *sc;
|
|
char *msg;
|
|
{
|
|
register volatile struct lermd *rmd;
|
|
int len;
|
|
|
|
if (!ledebug)
|
|
return;
|
|
|
|
rmd = &sc->sc_r2->ler2_rmd[sc->sc_rmd];
|
|
len = rmd->rmd3;
|
|
log(LOG_WARNING, "%s: ierror(%s): from %s: buf=%d, len=%d, rmd1=%b\n",
|
|
sc->sc_dev.dv_xname, msg, len > 11 ?
|
|
ether_sprintf((u_char *)&sc->sc_r2->ler2_rbuf[sc->sc_rmd][6]) :
|
|
"unknown",
|
|
sc->sc_rmd, len, rmd->rmd1_bits, LE_R1_BITS);
|
|
}
|
|
|
|
void
|
|
lexerror(sc)
|
|
register struct le_softc *sc;
|
|
{
|
|
register volatile struct letmd *tmd;
|
|
register int len, tmd3, tdr;
|
|
|
|
if (!ledebug)
|
|
return;
|
|
|
|
tmd = sc->sc_r2->ler2_tmd;
|
|
tmd3 = tmd->tmd3;
|
|
tdr = tmd3 & LE_T3_TDR_MASK;
|
|
len = -tmd->tmd2;
|
|
log(LOG_WARNING,
|
|
"%s: oerror: to %s: buf=%d, len=%d, tmd1=%b, tmd3=%b, tdr=%d (%d nsecs)\n",
|
|
sc->sc_dev.dv_xname, len > 5 ?
|
|
ether_sprintf((u_char *)&sc->sc_r2->ler2_tbuf[0][0]) : "unknown",
|
|
0, len,
|
|
tmd->tmd1_bits, LE_T1_BITS,
|
|
tmd3, LE_T3_BITS, tdr, tdr * 100);
|
|
}
|