/* * Copyright (c) 1993 Dean Huxley * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Dean Huxley. * 4. The name of Dean Huxley may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $Id: if_eg.c,v 1.25 1997/09/02 01:18:09 bde Exp $ * * Support for 3Com 3c505 Etherlink+ card. */ /* To do: * - multicast * - promiscuous */ #include "eg.h" #include "bpfilter.h" #include "opt_inet.h" #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #endif #ifdef NS #include #include #endif #if NBPFILTER > 0 #include #endif #include #include #include /* for debugging convenience */ #ifdef EGDEBUG #define dprintf(x) printf x #else #define dprintf(x) #endif #define EG_INLEN 10 #define EG_BUFLEN 0x0670 /* * Ethernet software status per interface. */ static struct eg_softc { struct arpcom sc_arpcom; /* Ethernet common part */ int eg_cmd; /* Command register R/W */ int eg_ctl; /* Control register R/W (EG_CTL_*) */ int eg_stat; /* Status register R/O (EG_STAT_*) */ int eg_data; /* Data register R/W (16 bits) */ u_char eg_rom_major; /* Cards ROM version (major number) */ u_char eg_rom_minor; /* Cards ROM version (minor number) */ short eg_ram; /* Amount of RAM on the card */ u_char eg_pcb[64]; /* Primary Command Block buffer */ u_char eg_incount; /* Number of buffers currently used */ u_char *eg_inbuf; /* Incoming packet buffer */ u_char *eg_outbuf; /* Outgoing packet buffer */ } eg_softc[NEG]; static int egprobe (struct isa_device *); static int egattach (struct isa_device *); struct isa_driver egdriver = { egprobe, egattach, "eg", 0 }; static void egprintpcb __P((struct eg_softc *sc)); static void egprintstat __P((int b)); static int egoutPCB __P((struct eg_softc *sc, int b)); static int egreadPCBstat __P((struct eg_softc *sc, int statb)); static int egreadPCBready __P((struct eg_softc *sc)); static int egwritePCB __P((struct eg_softc *sc)); static int egreadPCB __P((struct eg_softc *sc)); static void eginit __P((struct eg_softc *sc)); static int egioctl (struct ifnet *, int, caddr_t); static void egrecv(struct eg_softc *); static void egstart(struct ifnet *); static void egread __P((struct eg_softc *, caddr_t, int)); static void egstop __P((struct eg_softc *)); static void egwatchdog __P((struct ifnet *)); static void egreset __P((struct eg_softc *)); static struct mbuf *egget __P((struct eg_softc *, caddr_t, int)); /* * Support stuff */ static void egprintpcb(sc) struct eg_softc *sc; { int i; for (i = 0; i < sc->eg_pcb[1] + 2; i++) dprintf(("eg#: pcb[%2d] = %x\n", i, sc->eg_pcb[i])); } static void egprintstat(b) u_char b; { dprintf(("eg#: %s %s %s %s %s %s %s\n", (b & EG_STAT_HCRE)?"HCRE":"", (b & EG_STAT_ACRF)?"ACRF":"", (b & EG_STAT_DIR )?"DIR ":"", (b & EG_STAT_DONE)?"DONE":"", (b & EG_STAT_ASF3)?"ASF3":"", (b & EG_STAT_ASF2)?"ASF2":"", (b & EG_STAT_ASF1)?"ASF1":"")); } static int egoutPCB(sc, b) struct eg_softc *sc; u_char b; { int i; for (i=0; i < 4000; i++) { if (inb(sc->eg_stat) & EG_STAT_HCRE) { outb(sc->eg_cmd, b); return 0; } DELAY(10); } dprintf(("eg#: egoutPCB failed\n")); return 1; } static int egreadPCBstat(sc, statb) struct eg_softc *sc; u_char statb; { int i; for (i=0; i < 5000; i++) { if ((inb(sc->eg_stat) & EG_PCB_STAT) != EG_PCB_NULL) break; DELAY(10); } if ((inb(sc->eg_stat) & EG_PCB_STAT) == statb) return 0; return 1; } static int egreadPCBready(sc) struct eg_softc *sc; { int i; for (i=0; i < 10000; i++) { if (inb(sc->eg_stat) & EG_STAT_ACRF) return 0; DELAY(5); } dprintf(("eg#: PCB read not ready\n")); return 1; } static int egwritePCB(sc) struct eg_softc *sc; { int i; u_char len; outb(sc->eg_ctl, (inb(sc->eg_ctl) & ~EG_PCB_STAT) | EG_PCB_NULL); len = sc->eg_pcb[1] + 2; for (i = 0; i < len; i++) egoutPCB(sc, sc->eg_pcb[i]); for (i=0; i < 4000; i++) { if (inb(sc->eg_stat) & EG_STAT_HCRE) break; DELAY(10); } outb(sc->eg_ctl, (inb(sc->eg_ctl) & ~EG_PCB_STAT) | EG_PCB_DONE); egoutPCB(sc, len); if (egreadPCBstat(sc, EG_PCB_ACCEPT)) return 1; return 0; } static int egreadPCB(sc) struct eg_softc *sc; { int i; u_char b; outb(sc->eg_ctl, (inb(sc->eg_ctl) & ~EG_PCB_STAT) | EG_PCB_NULL); bzero(sc->eg_pcb, sizeof(sc->eg_pcb)); if (egreadPCBready(sc)) return 1; sc->eg_pcb[0] = inb(sc->eg_cmd); if (egreadPCBready(sc)) return 1; sc->eg_pcb[1] = inb(sc->eg_cmd); if (sc->eg_pcb[1] > 62) { dprintf(("eg#: len %d too large\n", sc->eg_pcb[1])); return 1; } for (i = 0; i < sc->eg_pcb[1]; i++) { if (egreadPCBready(sc)) return 1; sc->eg_pcb[2+i] = inb(sc->eg_cmd); } if (egreadPCBready(sc)) return 1; if (egreadPCBstat(sc, EG_PCB_DONE)) return 1; if ((b = inb(sc->eg_cmd)) != sc->eg_pcb[1] + 2) { dprintf(("eg#: %d != %d\n", b, sc->eg_pcb[1] + 2)); return 1; } outb(sc->eg_ctl, (inb(sc->eg_ctl) & ~EG_PCB_STAT) | EG_PCB_ACCEPT); return 0; } /* * Real stuff */ static int egprobe(struct isa_device * id) { struct eg_softc *sc = &eg_softc[id->id_unit]; int i; if (id->id_iobase & ~0x07f0 != 0) { dprintf(("eg#: Weird iobase %x\n", ia->ia_iobase)); return 0; } sc->eg_cmd = id->id_iobase + EG_COMMAND; sc->eg_ctl = id->id_iobase + EG_CONTROL; sc->eg_stat = id->id_iobase + EG_STATUS; sc->eg_data = id->id_iobase + EG_DATA; /* hard reset card */ outb(sc->eg_ctl, EG_CTL_RESET); outb(sc->eg_ctl, 0); for (i = 0; i < 1600; i++) { DELAY(10000); if ((inb(sc->eg_stat) & EG_PCB_STAT) == EG_PCB_NULL) break; } if ((inb(sc->eg_stat) & EG_PCB_STAT) != EG_PCB_NULL) { dprintf(("eg#: eg: Reset failed\n")); return 0; } sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ sc->eg_pcb[1] = 0; if (egwritePCB(sc) != 0) return 0; if (egreadPCB(sc) != 0) { egprintpcb(sc); return 0; } if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ sc->eg_pcb[1] != 0x0a) { egprintpcb(sc); return 0; } sc->eg_rom_major = sc->eg_pcb[3]; sc->eg_rom_minor = sc->eg_pcb[2]; sc->eg_ram = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); return 8; } static int egattach(struct isa_device *id) { struct eg_softc *sc = &eg_softc[id->id_unit]; struct ifnet *ifp = &sc->sc_arpcom.ac_if; egstop(sc); sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ sc->eg_pcb[1] = 0; if (egwritePCB(sc) != 0) { dprintf(("eg#: write error\n")); return 0; } if (egreadPCB(sc) != 0) { dprintf(("eg#: read error\n")); egprintpcb(sc); return 0; } /* check Get station address response */ if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { dprintf(("eg#: parse error\n")); egprintpcb(sc); return 0; } bcopy(&sc->eg_pcb[2], sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); printf("eg%d: address %6D, type=3COM 3c505 (v%d.%02d, %dk)\n", id->id_unit, sc->sc_arpcom.ac_enaddr, ":", sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram); sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ if (egwritePCB(sc) != 0) { dprintf(("eg#: write error2\n")); return 0; } if (egreadPCB(sc) != 0) { dprintf(("eg#: read error2\n")); egprintpcb(sc); return 0; } if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { dprintf(("eg#: parse error2\n")); egprintpcb(sc); return 0; } /* Initialize ifnet structure. */ ifp->if_softc = sc; ifp->if_unit = id->id_unit; ifp->if_name = "eg"; ifp->if_output = ether_output; ifp->if_start = egstart; ifp->if_ioctl = egioctl; ifp->if_init = (if_init_f_t*)eginit; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; ifp->if_watchdog = egwatchdog; /* Now we can attach the interface. */ if_attach(ifp); ether_ifattach(ifp); #if NBPFILTER > 0 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif return 1; } static void eginit(struct eg_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; /* soft reset the board */ outb(sc->eg_ctl, EG_CTL_FLSH); DELAY(100); outb(sc->eg_ctl, EG_CTL_ATTN); DELAY(100); outb(sc->eg_ctl, 0); DELAY(200); sc->eg_pcb[0] = EG_CMD_CONFIG82586; /* Configure 82586 */ sc->eg_pcb[1] = 2; sc->eg_pcb[2] = 3; /* receive broadcast & multicast */ sc->eg_pcb[3] = 0; #ifdef EGDEBUG if (egwritePCB(sc) != 0) dprintf(("eg#: write error3\n")); #endif if (egreadPCB(sc) != 0) { dprintf(("eg#: read error\n")); egprintpcb(sc); } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) printf("eg%d: configure card command failed\n", ifp->if_unit); if (sc->eg_inbuf == NULL) sc->eg_inbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); sc->eg_incount = 0; if (sc->eg_outbuf == NULL) sc->eg_outbuf = malloc(EG_BUFLEN, M_TEMP, M_NOWAIT); outb(sc->eg_ctl, EG_CTL_CMDE); sc->eg_incount = 0; egrecv(sc); /* Interface is now `running', with no output active. */ ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; /* Attempt to start output, if any. */ egstart(ifp); } static void egrecv(sc) struct eg_softc *sc; { while (sc->eg_incount < EG_INLEN) { sc->eg_pcb[0] = EG_CMD_RECVPACKET; sc->eg_pcb[1] = 0x08; sc->eg_pcb[2] = 0; /* address not used.. we send zero */ sc->eg_pcb[3] = 0; sc->eg_pcb[4] = 0; sc->eg_pcb[5] = 0; sc->eg_pcb[6] = EG_BUFLEN & 0xff; /* our buffer size */ sc->eg_pcb[7] = (EG_BUFLEN >> 8) & 0xff; sc->eg_pcb[8] = 0; /* timeout, 0 == none */ sc->eg_pcb[9] = 0; if (egwritePCB(sc) != 0) break; sc->eg_incount++; } } static void egstart(ifp) struct ifnet *ifp; { register struct eg_softc *sc = ifp->if_softc; struct mbuf *m0, *m; caddr_t buffer; int len; u_short *ptr; /* Don't transmit if interface is busy or not running */ if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) return; loop: /* Dequeue the next datagram. */ IF_DEQUEUE(&ifp->if_snd, m0); if (m0 == 0) return; ifp->if_flags |= IFF_OACTIVE; /* We need to use m->m_pkthdr.len, so require the header */ if ((m0->m_flags & M_PKTHDR) == 0) panic("egstart: no header mbuf"); len = max(m0->m_pkthdr.len, ETHER_MIN_LEN); #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp, m0); #endif sc->eg_pcb[0] = EG_CMD_SENDPACKET; sc->eg_pcb[1] = 0x06; sc->eg_pcb[2] = 0; /* address not used, we send zero */ sc->eg_pcb[3] = 0; sc->eg_pcb[4] = 0; sc->eg_pcb[5] = 0; sc->eg_pcb[6] = len; /* length of packet */ sc->eg_pcb[7] = len >> 8; if (egwritePCB(sc) != 0) { dprintf(("eg#: egwritePCB in egstart failed\n")); ifp->if_oerrors++; ifp->if_flags &= ~IFF_OACTIVE; goto loop; } buffer = sc->eg_outbuf; for (m = m0; m != 0; m = m->m_next) { bcopy(mtod(m, caddr_t), buffer, m->m_len); buffer += m->m_len; } /* set direction bit: host -> adapter */ outb(sc->eg_ctl, inb(sc->eg_ctl) & ~EG_CTL_DIR); for (ptr = (u_short *) sc->eg_outbuf; len > 0; len -= 2) { outw(sc->eg_data, *ptr++); while (!(inb(sc->eg_stat) & EG_STAT_HRDY)) ; /* XXX need timeout here */ } m_freem(m0); } void egintr(int unit) { register struct eg_softc *sc = &eg_softc[unit]; int i, len; u_short *ptr; while (inb(sc->eg_stat) & EG_STAT_ACRF) { egreadPCB(sc); switch (sc->eg_pcb[0]) { case EG_RSP_RECVPACKET: len = sc->eg_pcb[6] | (sc->eg_pcb[7] << 8); /* Set direction bit : Adapter -> host */ outb(sc->eg_ctl, inb(sc->eg_ctl) | EG_CTL_DIR); for (ptr = (u_short *) sc->eg_inbuf; len > 0; len -= 2) { while (!(inb(sc->eg_stat) & EG_STAT_HRDY)) ; *ptr++ = inw(sc->eg_data); } len = sc->eg_pcb[8] | (sc->eg_pcb[9] << 8); egread(sc, sc->eg_inbuf, len); sc->eg_incount--; egrecv(sc); break; case EG_RSP_SENDPACKET: if (sc->eg_pcb[6] || sc->eg_pcb[7]) { dprintf(("eg#: packet dropped\n")); sc->sc_arpcom.ac_if.if_oerrors++; } else sc->sc_arpcom.ac_if.if_opackets++; sc->sc_arpcom.ac_if.if_collisions += sc->eg_pcb[8] & 0xf; sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE; egstart(&sc->sc_arpcom.ac_if); break; case EG_RSP_GETSTATS: dprintf(("eg#: Card Statistics\n")); bcopy(&sc->eg_pcb[2], &i, sizeof(i)); dprintf(("eg#: Receive Packets %d\n", i)); bcopy(&sc->eg_pcb[6], &i, sizeof(i)); dprintf(("eg#: Transmit Packets %d\n", i)); dprintf(("eg#: CRC errors %d\n", *(short*) &sc->eg_pcb[10])); dprintf(("eg#: alignment errors %d\n", *(short*) &sc->eg_pcb[12])); dprintf(("eg#: no resources errors %d\n", *(short*) &sc->eg_pcb[14])); dprintf(("eg#: overrun errors %d\n", *(short*) &sc->eg_pcb[16])); break; default: dprintf(("eg#: egintr: Unknown response %x??\n", sc->eg_pcb[0])); egprintpcb(sc); break; } } return; } /* * Pass a packet up to the higher levels. */ static void egread(sc, buf, len) struct eg_softc *sc; caddr_t buf; int len; { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mbuf *m; struct ether_header *eh; if (len <= sizeof(struct ether_header) || len > ETHER_MAX_LEN) { printf("eg#: invalid packet size %d; dropping\n", len); ifp->if_ierrors++; return; } /* Pull packet off interface. */ m = egget(sc, buf, len); if (m == 0) { ifp->if_ierrors++; return; } 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, 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); } /* * convert buf into mbufs */ static struct mbuf * egget(sc, buf, totlen) struct eg_softc *sc; caddr_t buf; int totlen; { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mbuf *top, **mp, *m; int len; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == 0) return 0; m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = totlen; len = MHLEN; top = 0; mp = ⊤ while (totlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem(top); return 0; } len = MLEN; } if (totlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } m->m_len = len = min(totlen, len); bcopy((caddr_t)buf, mtod(m, caddr_t), len); buf += len; totlen -= len; *mp = m; mp = &m->m_next; } return top; } static int egioctl(ifp, command, data) register struct ifnet *ifp; int command; caddr_t data; { struct eg_softc *sc = ifp->if_softc; int s, error = 0; s = splnet(); switch (command) { case SIOCSIFADDR: case SIOCGIFADDR: case SIOCSIFMTU: error = ether_ioctl(ifp, command, data); 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. */ egstop(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. */ eginit(sc); } else { sc->eg_pcb[0] = EG_CMD_GETSTATS; sc->eg_pcb[1] = 0; #ifdef EGDEBUG if (egwritePCB(sc) != 0) dprintf(("eg#: write error\n")); #endif /* * XXX deal with flags changes: * IFF_MULTICAST, IFF_PROMISC, * IFF_LINK0, IFF_LINK1, */ } break; default: error = EINVAL; break; } splx(s); return error; } static void egreset(sc) struct eg_softc *sc; { int s; dprintf(("eg#: egreset()\n")); s = splnet(); egstop(sc); eginit(sc); splx(s); } static void egwatchdog(ifp) struct ifnet *ifp; { struct eg_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", "eg#"); sc->sc_arpcom.ac_if.if_oerrors++; egreset(sc); } static void egstop(sc) register struct eg_softc *sc; { outb(sc->eg_ctl, 0); }