1058 lines
25 KiB
C
1058 lines
25 KiB
C
/* $NetBSD: elink3.c,v 1.10 1996/10/13 01:37:22 christos Exp $ */
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/*
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* Copyright (c) 1994 Herb Peyerl <hpeyerl@beer.org>
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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 Herb Peyerl.
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* 4. The name of Herb Peyerl 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 THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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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/mbuf.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <sys/errno.h>
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#include <sys/syslog.h>
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#include <sys/select.h>
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#include <sys/device.h>
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#include <net/if.h>
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#include <net/netisr.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <net/netisr.h>
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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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#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 <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/ic/elink3var.h>
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#include <dev/ic/elink3reg.h>
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#define ETHER_MIN_LEN 64
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#define ETHER_MAX_LEN 1518
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#define ETHER_ADDR_LEN 6
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struct cfdriver ep_cd = {
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NULL, "ep", DV_IFNET
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};
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static void eptxstat __P((struct ep_softc *));
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static int epstatus __P((struct ep_softc *));
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void epinit __P((struct ep_softc *));
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int epioctl __P((struct ifnet *, u_long, caddr_t));
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void epstart __P((struct ifnet *));
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void epwatchdog __P((struct ifnet *));
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void epreset __P((struct ep_softc *));
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void epread __P((struct ep_softc *));
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struct mbuf *epget __P((struct ep_softc *, int));
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void epmbuffill __P((void *));
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void epmbufempty __P((struct ep_softc *));
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void epsetfilter __P((struct ep_softc *));
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void epsetlink __P((struct ep_softc *));
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static int epbusyeeprom __P((struct ep_softc *));
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void
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epconfig(sc, conn)
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struct ep_softc *sc;
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u_int16_t conn;
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{
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struct ifnet *ifp = &sc->sc_arpcom.ac_if;
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bus_chipset_tag_t bc = sc->sc_bc;
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bus_io_handle_t ioh = sc->sc_ioh;
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u_int16_t i;
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sc->ep_connectors = 0;
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printf("%s: ", sc->sc_dev.dv_xname);
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if (conn & IS_AUI) {
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printf("aui");
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sc->ep_connectors |= AUI;
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}
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if (conn & IS_BNC) {
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if (sc->ep_connectors)
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printf("/");
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printf("bnc");
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sc->ep_connectors |= BNC;
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}
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if (conn & IS_UTP) {
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if (sc->ep_connectors)
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printf("/");
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printf("utp");
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sc->ep_connectors |= UTP;
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}
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if (!sc->ep_connectors)
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printf("no connectors!");
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/*
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* Read the station address from the eeprom
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*/
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for (i = 0; i < 3; i++) {
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u_int16_t x;
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if (epbusyeeprom(sc))
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return;
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bus_io_write_2(bc, ioh, EP_W0_EEPROM_COMMAND, READ_EEPROM | i);
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if (epbusyeeprom(sc))
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return;
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x = bus_io_read_2(bc, ioh, EP_W0_EEPROM_DATA);
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sc->sc_arpcom.ac_enaddr[(i << 1)] = x >> 8;
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sc->sc_arpcom.ac_enaddr[(i << 1) + 1] = x;
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}
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printf(" address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr));
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bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
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ifp->if_softc = sc;
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ifp->if_start = epstart;
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ifp->if_ioctl = epioctl;
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ifp->if_watchdog = epwatchdog;
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ifp->if_flags =
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IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
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if_attach(ifp);
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ether_ifattach(ifp);
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#if NBPFILTER > 0
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bpfattach(&sc->sc_arpcom.ac_if.if_bpf, ifp, DLT_EN10MB,
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sizeof(struct ether_header));
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#endif
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sc->tx_start_thresh = 20; /* probably a good starting point. */
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}
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/*
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* The order in here seems important. Otherwise we may not receive
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* interrupts. ?!
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*/
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void
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epinit(sc)
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register struct ep_softc *sc;
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{
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register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
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bus_chipset_tag_t bc = sc->sc_bc;
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bus_io_handle_t ioh = sc->sc_ioh;
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int i;
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while (bus_io_read_2(bc, ioh, EP_STATUS) & S_COMMAND_IN_PROGRESS)
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;
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if (sc->bustype != EP_BUS_PCI) {
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GO_WINDOW(0);
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bus_io_write_2(bc, ioh, EP_W0_CONFIG_CTRL, 0);
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bus_io_write_2(bc, ioh, EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
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}
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if (sc->bustype == EP_BUS_PCMCIA) {
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#ifdef EP_COAX_DEFAULT
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bus_io_write_2(bc, ioh, EP_W0_ADDRESS_CFG,3<<14);
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#else
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bus_io_write_2(bc, ioh, EP_W0_ADDRESS_CFG,0<<14);
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#endif
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bus_io_write_2(bc, ioh, EP_W0_RESOURCE_CFG, 0x3f00);
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}
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GO_WINDOW(2);
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for (i = 0; i < 6; i++) /* Reload the ether_addr. */
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bus_io_write_1(bc, ioh, EP_W2_ADDR_0 + i,
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sc->sc_arpcom.ac_enaddr[i]);
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if (sc->bustype == EP_BUS_PCI || sc->bustype == EP_BUS_EISA)
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/* Reset the station-address receive filter */
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for (i = 0; i < 6; i++)
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bus_io_write_1(bc, ioh,EP_W2_RECVMASK_0 + i, 0);
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bus_io_write_2(bc, ioh, EP_COMMAND, RX_RESET);
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bus_io_write_2(bc, ioh, EP_COMMAND, TX_RESET);
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GO_WINDOW(1); /* Window 1 is operating window */
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for (i = 0; i < 31; i++)
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bus_io_read_1(bc, ioh, EP_W1_TX_STATUS);
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bus_io_write_2(bc, ioh, EP_COMMAND, SET_RD_0_MASK | S_CARD_FAILURE |
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S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
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bus_io_write_2(bc, ioh, EP_COMMAND, SET_INTR_MASK | S_CARD_FAILURE |
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S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
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/*
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* Attempt to get rid of any stray interrupts that occured during
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* configuration. On the i386 this isn't possible because one may
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* already be queued. However, a single stray interrupt is
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* unimportant.
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*/
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bus_io_write_2(bc, ioh, EP_COMMAND, ACK_INTR | 0xff);
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epsetfilter(sc);
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epsetlink(sc);
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bus_io_write_2(bc, ioh, EP_COMMAND, RX_ENABLE);
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bus_io_write_2(bc, ioh, EP_COMMAND, TX_ENABLE);
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epmbuffill(sc);
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/* Interface is now `running', with no output active. */
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ifp->if_flags |= IFF_RUNNING;
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ifp->if_flags &= ~IFF_OACTIVE;
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/* Attempt to start output, if any. */
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epstart(ifp);
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}
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void
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epsetfilter(sc)
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register struct ep_softc *sc;
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{
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register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
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GO_WINDOW(1); /* Window 1 is operating window */
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bus_io_write_2(sc->sc_bc, sc->sc_ioh, EP_COMMAND, SET_RX_FILTER |
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FIL_INDIVIDUAL | FIL_BRDCST |
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((ifp->if_flags & IFF_MULTICAST) ? FIL_MULTICAST : 0 ) |
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((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0 ));
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}
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void
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epsetlink(sc)
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register struct ep_softc *sc;
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{
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register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
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bus_chipset_tag_t bc = sc->sc_bc;
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bus_io_handle_t ioh = sc->sc_ioh;
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/*
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* you can `ifconfig (link0|-link0) ep0' to get the following
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* behaviour:
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* -link0 disable AUI/UTP. enable BNC.
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* link0 disable BNC. enable AUI.
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* link1 if the card has a UTP connector, and link0 is
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* set too, then you get the UTP port.
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*/
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GO_WINDOW(4);
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bus_io_write_2(bc, ioh, EP_W4_MEDIA_TYPE, DISABLE_UTP);
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if (!(ifp->if_flags & IFF_LINK0) && (sc->ep_connectors & BNC)) {
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if (sc->bustype == EP_BUS_PCMCIA) {
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GO_WINDOW(0);
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bus_io_write_2(bc, ioh, EP_W0_ADDRESS_CFG,3<<14);
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GO_WINDOW(1);
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}
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bus_io_write_2(bc, ioh, EP_COMMAND, START_TRANSCEIVER);
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delay(1000);
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}
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if (ifp->if_flags & IFF_LINK0) {
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bus_io_write_2(bc, ioh, EP_COMMAND, STOP_TRANSCEIVER);
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delay(1000);
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if ((ifp->if_flags & IFF_LINK1) && (sc->ep_connectors & UTP)) {
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if (sc->bustype == EP_BUS_PCMCIA) {
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GO_WINDOW(0);
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bus_io_write_2(bc, ioh,
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EP_W0_ADDRESS_CFG,0<<14);
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GO_WINDOW(4);
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}
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bus_io_write_2(bc, ioh, EP_W4_MEDIA_TYPE, ENABLE_UTP);
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}
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}
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GO_WINDOW(1);
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}
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/*
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* Start outputting on the interface.
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* Always called as splnet().
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*/
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void
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epstart(ifp)
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struct ifnet *ifp;
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{
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register struct ep_softc *sc = ifp->if_softc;
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bus_chipset_tag_t bc = sc->sc_bc;
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bus_io_handle_t ioh = sc->sc_ioh;
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struct mbuf *m, *m0;
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int sh, len, pad;
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/* Don't transmit if interface is busy or not running */
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if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
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return;
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startagain:
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/* Sneak a peek at the next packet */
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m0 = ifp->if_snd.ifq_head;
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if (m0 == 0)
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return;
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/* We need to use m->m_pkthdr.len, so require the header */
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if ((m0->m_flags & M_PKTHDR) == 0)
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panic("epstart: no header mbuf");
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len = m0->m_pkthdr.len;
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pad = (4 - len) & 3;
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/*
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* The 3c509 automatically pads short packets to minimum ethernet
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* length, but we drop packets that are too large. Perhaps we should
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* truncate them instead?
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*/
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if (len + pad > ETHER_MAX_LEN) {
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/* packet is obviously too large: toss it */
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++ifp->if_oerrors;
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IF_DEQUEUE(&ifp->if_snd, m0);
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m_freem(m0);
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goto readcheck;
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}
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if (bus_io_read_2(bc, ioh, EP_W1_FREE_TX) < len + pad + 4) {
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bus_io_write_2(bc, ioh, EP_COMMAND,
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SET_TX_AVAIL_THRESH | (len + pad + 4));
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/* not enough room in FIFO */
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ifp->if_flags |= IFF_OACTIVE;
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return;
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} else {
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bus_io_write_2(bc, ioh, EP_COMMAND,
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SET_TX_AVAIL_THRESH | 2044);
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}
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IF_DEQUEUE(&ifp->if_snd, m0);
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if (m0 == 0) /* not really needed */
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return;
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bus_io_write_2(bc, ioh, EP_COMMAND, SET_TX_START_THRESH |
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(len / 4 + sc->tx_start_thresh));
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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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/*
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* Do the output at splhigh() so that an interrupt from another device
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* won't cause a FIFO underrun.
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*/
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sh = splhigh();
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bus_io_write_2(bc, ioh, EP_W1_TX_PIO_WR_1, len);
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bus_io_write_2(bc, ioh, EP_W1_TX_PIO_WR_1,
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0xffff); /* Second dword meaningless */
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if (EP_IS_BUS_32(sc->bustype)) {
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for (m = m0; m; ) {
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if (m->m_len > 3)
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bus_io_write_multi_4(bc, ioh,
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EP_W1_TX_PIO_WR_1, mtod(m, u_int32_t *),
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m->m_len / 4);
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if (m->m_len & 3)
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bus_io_write_multi_1(bc, ioh,
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EP_W1_TX_PIO_WR_1,
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mtod(m, u_int8_t *) + (m->m_len & ~3),
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m->m_len & 3);
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MFREE(m, m0);
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m = m0;
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}
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} else {
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for (m = m0; m; ) {
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if (m->m_len > 1)
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bus_io_write_multi_2(bc, ioh,
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EP_W1_TX_PIO_WR_1, mtod(m, u_int16_t *),
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m->m_len / 2);
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if (m->m_len & 1)
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bus_io_write_1(bc, ioh, EP_W1_TX_PIO_WR_1,
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*(mtod(m, u_int8_t *) + m->m_len - 1));
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MFREE(m, m0);
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m = m0;
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}
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}
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while (pad--)
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bus_io_write_1(bc, ioh, EP_W1_TX_PIO_WR_1, 0);
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splx(sh);
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++ifp->if_opackets;
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readcheck:
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if ((bus_io_read_2(bc, ioh, EP_W1_RX_STATUS) & ERR_INCOMPLETE) == 0) {
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/* We received a complete packet. */
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u_int16_t status = bus_io_read_2(bc, ioh, EP_STATUS);
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if ((status & S_INTR_LATCH) == 0) {
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/*
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* No interrupt, read the packet and continue
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* Is this supposed to happen? Is my motherboard
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* completely busted?
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*/
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epread(sc);
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}
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else
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/* Got an interrupt, return so that it gets serviced. */
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return;
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}
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else {
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/* Check if we are stuck and reset [see XXX comment] */
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if (epstatus(sc)) {
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if (ifp->if_flags & IFF_DEBUG)
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printf("%s: adapter reset\n",
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sc->sc_dev.dv_xname);
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epreset(sc);
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}
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}
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goto startagain;
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}
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/*
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* XXX: The 3c509 card can get in a mode where both the fifo status bit
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* FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set
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* We detect this situation and we reset the adapter.
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* It happens at times when there is a lot of broadcast traffic
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* on the cable (once in a blue moon).
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*/
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static int
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epstatus(sc)
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register struct ep_softc *sc;
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{
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bus_chipset_tag_t bc = sc->sc_bc;
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bus_io_handle_t ioh = sc->sc_ioh;
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u_int16_t fifost;
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/*
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* Check the FIFO status and act accordingly
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*/
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GO_WINDOW(4);
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fifost = bus_io_read_2(bc, ioh, EP_W4_FIFO_DIAG);
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GO_WINDOW(1);
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if (fifost & FIFOS_RX_UNDERRUN) {
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if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
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printf("%s: RX underrun\n", sc->sc_dev.dv_xname);
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epreset(sc);
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return 0;
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}
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|
|
if (fifost & FIFOS_RX_STATUS_OVERRUN) {
|
|
if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("%s: RX Status overrun\n", sc->sc_dev.dv_xname);
|
|
return 1;
|
|
}
|
|
|
|
if (fifost & FIFOS_RX_OVERRUN) {
|
|
if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("%s: RX overrun\n", sc->sc_dev.dv_xname);
|
|
return 1;
|
|
}
|
|
|
|
if (fifost & FIFOS_TX_OVERRUN) {
|
|
if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("%s: TX overrun\n", sc->sc_dev.dv_xname);
|
|
epreset(sc);
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void
|
|
eptxstat(sc)
|
|
register struct ep_softc *sc;
|
|
{
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
int i;
|
|
|
|
/*
|
|
* We need to read+write TX_STATUS until we get a 0 status
|
|
* in order to turn off the interrupt flag.
|
|
*/
|
|
while ((i = bus_io_read_1(bc, ioh, EP_W1_TX_STATUS)) & TXS_COMPLETE) {
|
|
bus_io_write_1(bc, ioh, EP_W1_TX_STATUS, 0x0);
|
|
|
|
if (i & TXS_JABBER) {
|
|
++sc->sc_arpcom.ac_if.if_oerrors;
|
|
if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("%s: jabber (%x)\n",
|
|
sc->sc_dev.dv_xname, i);
|
|
epreset(sc);
|
|
} else if (i & TXS_UNDERRUN) {
|
|
++sc->sc_arpcom.ac_if.if_oerrors;
|
|
if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
|
|
printf("%s: fifo underrun (%x) @%d\n",
|
|
sc->sc_dev.dv_xname, i,
|
|
sc->tx_start_thresh);
|
|
if (sc->tx_succ_ok < 100)
|
|
sc->tx_start_thresh = min(ETHER_MAX_LEN,
|
|
sc->tx_start_thresh + 20);
|
|
sc->tx_succ_ok = 0;
|
|
epreset(sc);
|
|
} else if (i & TXS_MAX_COLLISION) {
|
|
++sc->sc_arpcom.ac_if.if_collisions;
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, TX_ENABLE);
|
|
sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
} else
|
|
sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127;
|
|
}
|
|
}
|
|
|
|
int
|
|
epintr(arg)
|
|
void *arg;
|
|
{
|
|
register struct ep_softc *sc = arg;
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
|
|
u_int16_t status;
|
|
int ret = 0;
|
|
|
|
for (;;) {
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, C_INTR_LATCH);
|
|
|
|
status = bus_io_read_2(bc, ioh, EP_STATUS);
|
|
|
|
if ((status & (S_TX_COMPLETE | S_TX_AVAIL |
|
|
S_RX_COMPLETE | S_CARD_FAILURE)) == 0)
|
|
break;
|
|
|
|
ret = 1;
|
|
|
|
/*
|
|
* Acknowledge any interrupts. It's important that we do this
|
|
* first, since there would otherwise be a race condition.
|
|
* Due to the i386 interrupt queueing, we may get spurious
|
|
* interrupts occasionally.
|
|
*/
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, ACK_INTR | status);
|
|
|
|
if (status & S_RX_COMPLETE)
|
|
epread(sc);
|
|
if (status & S_TX_AVAIL) {
|
|
sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
|
|
epstart(&sc->sc_arpcom.ac_if);
|
|
}
|
|
if (status & S_CARD_FAILURE) {
|
|
printf("%s: adapter failure (%x)\n",
|
|
sc->sc_dev.dv_xname, status);
|
|
epreset(sc);
|
|
return (1);
|
|
}
|
|
if (status & S_TX_COMPLETE) {
|
|
eptxstat(sc);
|
|
epstart(ifp);
|
|
}
|
|
}
|
|
|
|
/* no more interrupts */
|
|
return (ret);
|
|
}
|
|
|
|
void
|
|
epread(sc)
|
|
register struct ep_softc *sc;
|
|
{
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
|
|
struct mbuf *m;
|
|
struct ether_header *eh;
|
|
int len;
|
|
|
|
len = bus_io_read_2(bc, ioh, EP_W1_RX_STATUS);
|
|
|
|
again:
|
|
if (ifp->if_flags & IFF_DEBUG) {
|
|
int err = len & ERR_MASK;
|
|
char *s = NULL;
|
|
|
|
if (len & ERR_INCOMPLETE)
|
|
s = "incomplete packet";
|
|
else if (err == ERR_OVERRUN)
|
|
s = "packet overrun";
|
|
else if (err == ERR_RUNT)
|
|
s = "runt packet";
|
|
else if (err == ERR_ALIGNMENT)
|
|
s = "bad alignment";
|
|
else if (err == ERR_CRC)
|
|
s = "bad crc";
|
|
else if (err == ERR_OVERSIZE)
|
|
s = "oversized packet";
|
|
else if (err == ERR_DRIBBLE)
|
|
s = "dribble bits";
|
|
|
|
if (s)
|
|
printf("%s: %s\n", sc->sc_dev.dv_xname, s);
|
|
}
|
|
|
|
if (len & ERR_INCOMPLETE)
|
|
return;
|
|
|
|
if (len & ERR_RX) {
|
|
++ifp->if_ierrors;
|
|
goto abort;
|
|
}
|
|
|
|
len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */
|
|
|
|
/* Pull packet off interface. */
|
|
m = epget(sc, len);
|
|
if (m == 0) {
|
|
ifp->if_ierrors++;
|
|
goto abort;
|
|
}
|
|
|
|
++ifp->if_ipackets;
|
|
|
|
/* We assume the header fit entirely in one mbuf. */
|
|
eh = mtod(m, struct ether_header *);
|
|
|
|
#if NBPFILTER > 0
|
|
/*
|
|
* Check if there's a BPF listener on this interface.
|
|
* If so, hand off the raw packet to BPF.
|
|
*/
|
|
if (ifp->if_bpf) {
|
|
bpf_mtap(ifp->if_bpf, m);
|
|
|
|
/*
|
|
* Note that the interface cannot be in promiscuous mode if
|
|
* there are no BPF listeners. And if we are in promiscuous
|
|
* mode, we have to check if this packet is really ours.
|
|
*/
|
|
if ((ifp->if_flags & IFF_PROMISC) &&
|
|
(eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
|
|
bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr,
|
|
sizeof(eh->ether_dhost)) != 0) {
|
|
m_freem(m);
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* We assume the header fit entirely in one mbuf. */
|
|
m_adj(m, sizeof(struct ether_header));
|
|
ether_input(ifp, eh, m);
|
|
|
|
/*
|
|
* In periods of high traffic we can actually receive enough
|
|
* packets so that the fifo overrun bit will be set at this point,
|
|
* even though we just read a packet. In this case we
|
|
* are not going to receive any more interrupts. We check for
|
|
* this condition and read again until the fifo is not full.
|
|
* We could simplify this test by not using epstatus(), but
|
|
* rechecking the RX_STATUS register directly. This test could
|
|
* result in unnecessary looping in cases where there is a new
|
|
* packet but the fifo is not full, but it will not fix the
|
|
* stuck behavior.
|
|
*
|
|
* Even with this improvement, we still get packet overrun errors
|
|
* which are hurting performance. Maybe when I get some more time
|
|
* I'll modify epread() so that it can handle RX_EARLY interrupts.
|
|
*/
|
|
if (epstatus(sc)) {
|
|
len = bus_io_read_2(bc, ioh, EP_W1_RX_STATUS);
|
|
/* Check if we are stuck and reset [see XXX comment] */
|
|
if (len & ERR_INCOMPLETE) {
|
|
if (ifp->if_flags & IFF_DEBUG)
|
|
printf("%s: adapter reset\n",
|
|
sc->sc_dev.dv_xname);
|
|
epreset(sc);
|
|
return;
|
|
}
|
|
goto again;
|
|
}
|
|
|
|
return;
|
|
|
|
abort:
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, RX_DISCARD_TOP_PACK);
|
|
while (bus_io_read_2(bc, ioh, EP_STATUS) & S_COMMAND_IN_PROGRESS)
|
|
;
|
|
}
|
|
|
|
struct mbuf *
|
|
epget(sc, totlen)
|
|
struct ep_softc *sc;
|
|
int totlen;
|
|
{
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
struct ifnet *ifp = &sc->sc_arpcom.ac_if;
|
|
struct mbuf *top, **mp, *m;
|
|
int len;
|
|
int sh;
|
|
|
|
m = sc->mb[sc->next_mb];
|
|
sc->mb[sc->next_mb] = 0;
|
|
if (m == 0) {
|
|
MGETHDR(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0)
|
|
return 0;
|
|
} else {
|
|
/* If the queue is no longer full, refill. */
|
|
if (sc->last_mb == sc->next_mb)
|
|
timeout(epmbuffill, sc, 1);
|
|
/* Convert one of our saved mbuf's. */
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
m->m_data = m->m_pktdat;
|
|
m->m_flags = M_PKTHDR;
|
|
}
|
|
m->m_pkthdr.rcvif = ifp;
|
|
m->m_pkthdr.len = totlen;
|
|
len = MHLEN;
|
|
top = 0;
|
|
mp = ⊤
|
|
|
|
/*
|
|
* We read the packet at splhigh() so that an interrupt from another
|
|
* device doesn't cause the card's buffer to overflow while we're
|
|
* reading it. We may still lose packets at other times.
|
|
*/
|
|
sh = splhigh();
|
|
|
|
while (totlen > 0) {
|
|
if (top) {
|
|
m = sc->mb[sc->next_mb];
|
|
sc->mb[sc->next_mb] = 0;
|
|
if (m == 0) {
|
|
MGET(m, M_DONTWAIT, MT_DATA);
|
|
if (m == 0) {
|
|
splx(sh);
|
|
m_freem(top);
|
|
return 0;
|
|
}
|
|
} else {
|
|
sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
|
|
}
|
|
len = MLEN;
|
|
}
|
|
if (totlen >= MINCLSIZE) {
|
|
MCLGET(m, M_DONTWAIT);
|
|
if (m->m_flags & M_EXT)
|
|
len = MCLBYTES;
|
|
}
|
|
len = min(totlen, len);
|
|
if (EP_IS_BUS_32(sc->bustype)) {
|
|
if (len > 3) {
|
|
len &= ~3;
|
|
bus_io_read_multi_4(bc, ioh,
|
|
EP_W1_RX_PIO_RD_1, mtod(m, u_int32_t *),
|
|
len / 4);
|
|
} else
|
|
bus_io_read_multi_1(bc, ioh,
|
|
EP_W1_RX_PIO_RD_1, mtod(m, u_int8_t *),
|
|
len);
|
|
} else {
|
|
if (len > 1) {
|
|
len &= ~1;
|
|
bus_io_read_multi_2(bc, ioh,
|
|
EP_W1_RX_PIO_RD_1, mtod(m, u_int16_t *),
|
|
len / 2);
|
|
} else
|
|
*(mtod(m, u_int8_t *)) =
|
|
bus_io_read_1(bc, ioh, EP_W1_RX_PIO_RD_1);
|
|
}
|
|
m->m_len = len;
|
|
totlen -= len;
|
|
*mp = m;
|
|
mp = &m->m_next;
|
|
}
|
|
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, RX_DISCARD_TOP_PACK);
|
|
while (bus_io_read_2(bc, ioh, EP_STATUS) & S_COMMAND_IN_PROGRESS)
|
|
;
|
|
|
|
splx(sh);
|
|
|
|
return top;
|
|
}
|
|
|
|
int
|
|
epioctl(ifp, cmd, data)
|
|
register struct ifnet *ifp;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
{
|
|
struct ep_softc *sc = ifp->if_softc;
|
|
struct ifaddr *ifa = (struct ifaddr *)data;
|
|
struct ifreq *ifr = (struct ifreq *)data;
|
|
int s, error = 0;
|
|
|
|
s = splnet();
|
|
|
|
switch (cmd) {
|
|
|
|
case SIOCSIFADDR:
|
|
ifp->if_flags |= IFF_UP;
|
|
|
|
switch (ifa->ifa_addr->sa_family) {
|
|
#ifdef INET
|
|
case AF_INET:
|
|
epinit(sc);
|
|
arp_ifinit(&sc->sc_arpcom, ifa);
|
|
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_arpcom.ac_enaddr);
|
|
else
|
|
bcopy(ina->x_host.c_host,
|
|
sc->sc_arpcom.ac_enaddr,
|
|
sizeof(sc->sc_arpcom.ac_enaddr));
|
|
/* Set new address. */
|
|
epinit(sc);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
epinit(sc);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
if ((ifp->if_flags & IFF_UP) == 0 &&
|
|
(ifp->if_flags & IFF_RUNNING) != 0) {
|
|
/*
|
|
* If interface is marked down and it is running, then
|
|
* stop it.
|
|
*/
|
|
epstop(sc);
|
|
ifp->if_flags &= ~IFF_RUNNING;
|
|
} else if ((ifp->if_flags & IFF_UP) != 0 &&
|
|
(ifp->if_flags & IFF_RUNNING) == 0) {
|
|
/*
|
|
* If interface is marked up and it is stopped, then
|
|
* start it.
|
|
*/
|
|
epinit(sc);
|
|
} else {
|
|
/*
|
|
* deal with flags changes:
|
|
* IFF_MULTICAST, IFF_PROMISC,
|
|
* IFF_LINK0, IFF_LINK1,
|
|
*/
|
|
epsetfilter(sc);
|
|
epsetlink(sc);
|
|
}
|
|
break;
|
|
|
|
case SIOCADDMULTI:
|
|
case SIOCDELMULTI:
|
|
error = (cmd == SIOCADDMULTI) ?
|
|
ether_addmulti(ifr, &sc->sc_arpcom) :
|
|
ether_delmulti(ifr, &sc->sc_arpcom);
|
|
|
|
if (error == ENETRESET) {
|
|
/*
|
|
* Multicast list has changed; set the hardware filter
|
|
* accordingly.
|
|
*/
|
|
epreset(sc);
|
|
error = 0;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
splx(s);
|
|
return (error);
|
|
}
|
|
|
|
void
|
|
epreset(sc)
|
|
struct ep_softc *sc;
|
|
{
|
|
int s;
|
|
|
|
s = splnet();
|
|
epstop(sc);
|
|
epinit(sc);
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
epwatchdog(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct ep_softc *sc = ifp->if_softc;
|
|
|
|
log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
|
|
++sc->sc_arpcom.ac_if.if_oerrors;
|
|
|
|
epreset(sc);
|
|
}
|
|
|
|
void
|
|
epstop(sc)
|
|
register struct ep_softc *sc;
|
|
{
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, RX_DISABLE);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, RX_DISCARD_TOP_PACK);
|
|
while (bus_io_read_2(bc, ioh, EP_STATUS) & S_COMMAND_IN_PROGRESS)
|
|
;
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, TX_DISABLE);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, STOP_TRANSCEIVER);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, RX_RESET);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, TX_RESET);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, C_INTR_LATCH);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, SET_RD_0_MASK);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, SET_INTR_MASK);
|
|
bus_io_write_2(bc, ioh, EP_COMMAND, SET_RX_FILTER);
|
|
|
|
epmbufempty(sc);
|
|
}
|
|
|
|
/*
|
|
* We get eeprom data from the id_port given an offset into the
|
|
* eeprom. Basically; after the ID_sequence is sent to all of
|
|
* the cards; they enter the ID_CMD state where they will accept
|
|
* command requests. 0x80-0xbf loads the eeprom data. We then
|
|
* read the port 16 times and with every read; the cards check
|
|
* for contention (ie: if one card writes a 0 bit and another
|
|
* writes a 1 bit then the host sees a 0. At the end of the cycle;
|
|
* each card compares the data on the bus; if there is a difference
|
|
* then that card goes into ID_WAIT state again). In the meantime;
|
|
* one bit of data is returned in the AX register which is conveniently
|
|
* returned to us by bus_io_read_1(). Hence; we read 16 times getting one
|
|
* bit of data with each read.
|
|
*
|
|
* NOTE: the caller must provide an i/o handle for ELINK_ID_PORT!
|
|
*/
|
|
u_int16_t
|
|
epreadeeprom(bc, ioh, offset)
|
|
bus_chipset_tag_t bc;
|
|
bus_io_handle_t ioh;
|
|
int offset;
|
|
{
|
|
u_int16_t data = 0;
|
|
int i;
|
|
|
|
bus_io_write_1(bc, ioh, 0, 0x80 + offset);
|
|
delay(1000);
|
|
for (i = 0; i < 16; i++)
|
|
data = (data << 1) | (bus_io_read_2(bc, ioh, 0) & 1);
|
|
return (data);
|
|
}
|
|
|
|
static int
|
|
epbusyeeprom(sc)
|
|
struct ep_softc *sc;
|
|
{
|
|
bus_chipset_tag_t bc = sc->sc_bc;
|
|
bus_io_handle_t ioh = sc->sc_ioh;
|
|
int i = 100, j;
|
|
|
|
if (sc->bustype == EP_BUS_PCMCIA) {
|
|
delay(1000);
|
|
return 0;
|
|
}
|
|
|
|
while (i--) {
|
|
j = bus_io_read_2(bc, ioh, EP_W0_EEPROM_COMMAND);
|
|
if (j & EEPROM_BUSY)
|
|
delay(100);
|
|
else
|
|
break;
|
|
}
|
|
if (!i) {
|
|
printf("\n%s: eeprom failed to come ready\n",
|
|
sc->sc_dev.dv_xname);
|
|
return (1);
|
|
}
|
|
if (j & EEPROM_TST_MODE) {
|
|
printf("\n%s: erase pencil mark, or disable plug-n-play mode!\n",
|
|
sc->sc_dev.dv_xname);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
epmbuffill(v)
|
|
void *v;
|
|
{
|
|
struct ep_softc *sc = v;
|
|
int s, i;
|
|
|
|
s = splnet();
|
|
i = sc->last_mb;
|
|
do {
|
|
if (sc->mb[i] == NULL)
|
|
MGET(sc->mb[i], M_DONTWAIT, MT_DATA);
|
|
if (sc->mb[i] == NULL)
|
|
break;
|
|
i = (i + 1) % MAX_MBS;
|
|
} while (i != sc->next_mb);
|
|
sc->last_mb = i;
|
|
/* If the queue was not filled, try again. */
|
|
if (sc->last_mb != sc->next_mb)
|
|
timeout(epmbuffill, sc, 1);
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
epmbufempty(sc)
|
|
struct ep_softc *sc;
|
|
{
|
|
int s, i;
|
|
|
|
s = splnet();
|
|
for (i = 0; i<MAX_MBS; i++) {
|
|
if (sc->mb[i]) {
|
|
m_freem(sc->mb[i]);
|
|
sc->mb[i] = NULL;
|
|
}
|
|
}
|
|
sc->last_mb = sc->next_mb = 0;
|
|
untimeout(epmbuffill, sc);
|
|
splx(s);
|
|
}
|