497 lines
11 KiB
C
497 lines
11 KiB
C
/* $NetBSD: ofnet.c,v 1.24 2002/03/05 04:12:58 itojun Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* 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 TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ofnet.c,v 1.24 2002/03/05 04:12:58 itojun Exp $");
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#include "ofnet.h"
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#include "opt_inet.h"
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#include "bpfilter.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <sys/ioctl.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <net/if_ether.h>
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#ifdef INET
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#include <netinet/in.h>
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#include <netinet/if_inarp.h>
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#endif
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#if NBPFILTER > 0
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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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#include <dev/ofw/openfirm.h>
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#if NIPKDB_OFN > 0
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#include <ipkdb/ipkdb.h>
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#include <machine/ipkdb.h>
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struct cfattach ipkdb_ofn_ca = {
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0, ipkdb_probe, ipkdb_attach
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};
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static struct ipkdb_if *kifp;
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static struct ofnet_softc *ipkdb_of;
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static int ipkdbprobe (struct cfdata *, void *);
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#endif
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struct ofnet_softc {
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struct device sc_dev;
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int sc_phandle;
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int sc_ihandle;
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struct ethercom sc_ethercom;
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struct callout sc_callout;
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};
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static int ofnet_match (struct device *, struct cfdata *, void *);
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static void ofnet_attach (struct device *, struct device *, void *);
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struct cfattach ofnet_ca = {
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sizeof(struct ofnet_softc), ofnet_match, ofnet_attach
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};
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static void ofnet_read (struct ofnet_softc *);
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static void ofnet_timer (void *);
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static void ofnet_init (struct ofnet_softc *);
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static void ofnet_stop (struct ofnet_softc *);
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static void ofnet_start (struct ifnet *);
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static int ofnet_ioctl (struct ifnet *, u_long, caddr_t);
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static void ofnet_watchdog (struct ifnet *);
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static int
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ofnet_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct ofbus_attach_args *oba = aux;
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char type[32];
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int l;
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#if NIPKDB_OFN > 0
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if (!parent)
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return ipkdbprobe(match, aux);
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#endif
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if (strcmp(oba->oba_busname, "ofw"))
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return (0);
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if ((l = OF_getprop(oba->oba_phandle, "device_type", type,
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sizeof type - 1)) < 0)
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return 0;
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if (l >= sizeof type)
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return 0;
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type[l] = 0;
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if (strcmp(type, "network"))
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return 0;
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return 1;
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}
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static void
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ofnet_attach(struct device *parent, struct device *self, void *aux)
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{
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struct ofnet_softc *of = (void *)self;
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struct ifnet *ifp = &of->sc_ethercom.ec_if;
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struct ofbus_attach_args *oba = aux;
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char path[256];
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int l;
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u_int8_t myaddr[ETHER_ADDR_LEN];
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of->sc_phandle = oba->oba_phandle;
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#if NIPKDB_OFN > 0
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if (kifp &&
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kifp->unit - 1 == of->sc_dev.dv_unit &&
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OF_instance_to_package(kifp->port) == oba->oba_phandle) {
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ipkdb_of = of;
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of->sc_ihandle = kifp->port;
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} else
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#endif
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if ((l = OF_package_to_path(oba->oba_phandle, path,
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sizeof path - 1)) < 0 ||
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l >= sizeof path ||
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(path[l] = 0, !(of->sc_ihandle = OF_open(path))))
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panic("ofnet_attach: unable to open");
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if (OF_getprop(oba->oba_phandle, "mac-address", myaddr,
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sizeof myaddr) < 0)
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panic("ofnet_attach: no mac-address");
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printf(": address %s\n", ether_sprintf(myaddr));
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callout_init(&of->sc_callout);
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bcopy(of->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
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ifp->if_softc = of;
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ifp->if_start = ofnet_start;
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ifp->if_ioctl = ofnet_ioctl;
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ifp->if_watchdog = ofnet_watchdog;
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ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS;
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IFQ_SET_READY(&ifp->if_snd);
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if_attach(ifp);
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ether_ifattach(ifp, myaddr);
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#ifdef __BROKEN_DK_ESTABLISH
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dk_establish(0, self); /* XXX */
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#endif
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}
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static char buf[ETHERMTU + sizeof(struct ether_header)];
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static void
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ofnet_read(struct ofnet_softc *of)
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{
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struct ifnet *ifp = &of->sc_ethercom.ec_if;
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struct mbuf *m, **mp, *head;
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int l, len;
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char *bufp;
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#if NIPKDB_OFN > 0
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ipkdbrint(kifp, ifp);
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#endif
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while (1) {
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if ((len = OF_read(of->sc_ihandle, buf, sizeof buf)) < 0) {
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if (len == -2 || len == 0)
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return;
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ifp->if_ierrors++;
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continue;
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}
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if (len < sizeof(struct ether_header)) {
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ifp->if_ierrors++;
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continue;
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}
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bufp = buf;
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/* Allocate a header mbuf */
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MGETHDR(m, M_DONTWAIT, MT_DATA);
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if (m == 0) {
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ifp->if_ierrors++;
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continue;
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}
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m->m_pkthdr.rcvif = ifp;
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m->m_pkthdr.len = len;
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/*
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* We don't know if the interface included the FCS
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* or not. For now, assume that it did if we got
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* a packet length that looks like it could include
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* the FCS.
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*
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* XXX Yuck.
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*/
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if (len > (ETHER_MAX_LEN - ETHER_CRC_LEN))
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m->m_flags |= M_HASFCS;
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l = MHLEN;
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head = 0;
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mp = &head;
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while (len > 0) {
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if (head) {
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MGET(m, M_DONTWAIT, MT_DATA);
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if (m == 0) {
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ifp->if_ierrors++;
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m_freem(head);
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head = 0;
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break;
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}
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l = MLEN;
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}
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if (len >= MINCLSIZE) {
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MCLGET(m, M_DONTWAIT);
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if ((m->m_flags & M_EXT) == 0) {
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ifp->if_ierrors++;
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m_free(m);
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m_freem(head);
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head = 0;
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break;
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}
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l = MCLBYTES;
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}
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/*
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* Make sure the data after the Ethernet header
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* is aligned.
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*
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* XXX Assumes the device is an ethernet, but
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* XXX then so does other code in this driver.
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*/
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if (head == NULL) {
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caddr_t newdata = (caddr_t)ALIGN(m->m_data +
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sizeof(struct ether_header)) -
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sizeof(struct ether_header);
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l -= newdata - m->m_data;
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m->m_data = newdata;
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}
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m->m_len = l = min(len, l);
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bcopy(bufp, mtod(m, char *), l);
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bufp += l;
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len -= l;
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*mp = m;
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mp = &m->m_next;
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}
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if (head == 0)
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continue;
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#if NBPFILTER > 0
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if (ifp->if_bpf)
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bpf_mtap(ifp->if_bpf, m);
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#endif
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ifp->if_ipackets++;
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(*ifp->if_input)(ifp, head);
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}
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}
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static void
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ofnet_timer(arg)
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void *arg;
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{
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struct ofnet_softc *of = arg;
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ofnet_read(of);
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callout_reset(&of->sc_callout, 1, ofnet_timer, of);
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}
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static void
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ofnet_init(struct ofnet_softc *of)
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{
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struct ifnet *ifp = &of->sc_ethercom.ec_if;
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if (ifp->if_flags & IFF_RUNNING)
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return;
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ifp->if_flags |= IFF_RUNNING;
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/* Start reading from interface */
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ofnet_timer(of);
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/* Attempt to start output */
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ofnet_start(ifp);
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}
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static void
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ofnet_stop(struct ofnet_softc *of)
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{
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callout_stop(&of->sc_callout);
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of->sc_ethercom.ec_if.if_flags &= ~IFF_RUNNING;
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}
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static void
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ofnet_start(struct ifnet *ifp)
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{
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struct ofnet_softc *of = ifp->if_softc;
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struct mbuf *m, *m0;
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char *bufp;
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int len;
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if (!(ifp->if_flags & IFF_RUNNING))
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return;
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for (;;) {
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/* First try reading any packets */
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ofnet_read(of);
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/* Now get the first packet on the queue */
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IFQ_DEQUEUE(&ifp->if_snd, m0);
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if (!m0)
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return;
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if (!(m0->m_flags & M_PKTHDR))
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panic("ofnet_start: no header mbuf");
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len = m0->m_pkthdr.len;
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#if NBPFILTER > 0
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if (ifp->if_bpf)
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bpf_mtap(ifp->if_bpf, m0);
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#endif
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if (len > ETHERMTU + sizeof(struct ether_header)) {
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/* packet too large, toss it */
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ifp->if_oerrors++;
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m_freem(m0);
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continue;
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}
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for (bufp = buf; (m = m0) != NULL;) {
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bcopy(mtod(m, char *), bufp, m->m_len);
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bufp += m->m_len;
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MFREE(m, m0);
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}
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/*
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* We don't know if the interface will auto-pad for
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* us, so make sure it's at least as large as a
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* minimum size Ethernet packet.
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*/
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if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN))
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len = ETHER_MIN_LEN - ETHER_CRC_LEN;
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else
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len = bufp - buf;
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if (OF_write(of->sc_ihandle, buf, len) != len)
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ifp->if_oerrors++;
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else
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ifp->if_opackets++;
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}
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}
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static int
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ofnet_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
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{
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struct ofnet_softc *of = ifp->if_softc;
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struct ifaddr *ifa = (struct ifaddr *)data;
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/* struct ifreq *ifr = (struct ifreq *)data; */
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int error = 0;
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switch (cmd) {
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case SIOCSIFADDR:
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ifp->if_flags |= IFF_UP;
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switch (ifa->ifa_addr->sa_family) {
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#ifdef INET
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case AF_INET:
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arp_ifinit(ifp, ifa);
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break;
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#endif
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default:
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break;
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}
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ofnet_init(of);
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break;
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case SIOCSIFFLAGS:
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if ((ifp->if_flags & IFF_UP) == 0 &&
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(ifp->if_flags & IFF_RUNNING) != 0) {
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/* If interface is down, but running, stop it. */
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ofnet_stop(of);
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} else if ((ifp->if_flags & IFF_UP) != 0 &&
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(ifp->if_flags & IFF_RUNNING) == 0) {
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/* If interface is up, but not running, start it. */
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ofnet_init(of);
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} else {
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/* Other flags are ignored. */
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}
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break;
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default:
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error = EINVAL;
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break;
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}
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return error;
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}
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static void
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ofnet_watchdog(struct ifnet *ifp)
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{
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struct ofnet_softc *of = ifp->if_softc;
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log(LOG_ERR, "%s: device timeout\n", of->sc_dev.dv_xname);
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ifp->if_oerrors++;
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ofnet_stop(of);
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ofnet_init(of);
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}
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#if NIPKDB_OFN > 0
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static void
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ipkdbofstart(struct ipkdb_if *kip)
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{
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int unit = kip->unit - 1;
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if (ipkdb_of)
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ipkdbattach(kip, &ipkdb_of->sc_ethercom);
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}
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static void
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ipkdbofleave(struct ipkdb_if *kip)
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{
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}
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static int
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ipkdbofrcv(struct ipkdb_if *kip, u_char *buf, int poll)
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{
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int l;
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do {
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l = OF_read(kip->port, buf, ETHERMTU);
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if (l < 0)
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l = 0;
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} while (!poll && !l);
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return l;
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}
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static void
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ipkdbofsend(struct ipkdb_if *kip, u_char *buf, int l)
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{
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OF_write(kip->port, buf, l);
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}
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static int
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ipkdbprobe(struct cfdata *match, void *aux)
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{
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struct ipkdb_if *kip = aux;
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static char name[256];
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int len;
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int phandle;
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kip->unit = match->cf_unit + 1;
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if (!(kip->port = OF_open("net")))
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return -1;
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if ((len = OF_instance_to_path(kip->port, name, sizeof name - 1)) < 0 ||
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len >= sizeof name)
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return -1;
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name[len] = 0;
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if ((phandle = OF_instance_to_package(kip->port)) == -1)
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return -1;
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if (OF_getprop(phandle, "mac-address", kip->myenetaddr,
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sizeof kip->myenetaddr) < 0)
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return -1;
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kip->flags |= IPKDB_MYHW;
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kip->name = name;
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kip->start = ipkdbofstart;
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kip->leave = ipkdbofleave;
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kip->receive = ipkdbofrcv;
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kip->send = ipkdbofsend;
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kifp = kip;
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return 0;
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}
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#endif
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