/* $OpenBSD: if_eg.c,v 1.53 2024/08/19 03:08:27 jsg Exp $ */ /* $NetBSD: if_eg.c,v 1.26 1996/05/12 23:52:27 mycroft Exp $ */ /* * 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. */ /* * Support for 3Com 3c505 Etherlink+ card. */ /* To do: * - multicast * - promiscuous */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #include #include #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. */ struct eg_softc { struct device sc_dev; void *sc_ih; bus_space_tag_t sc_bst; bus_space_handle_t sc_bsh; struct arpcom sc_arpcom; /* Ethernet common part */ 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 */ }; int egprobe(struct device *, void *, void *); void egattach(struct device *, struct device *, void *); const struct cfattach eg_ca = { sizeof(struct eg_softc), egprobe, egattach }; struct cfdriver eg_cd = { NULL, "eg", DV_IFNET }; int egintr(void *); void eginit(struct eg_softc *); int egioctl(struct ifnet *, u_long, caddr_t); void egrecv(struct eg_softc *); void egstart(struct ifnet *); void egwatchdog(struct ifnet *); void egreset(struct eg_softc *); void egread(struct eg_softc *, caddr_t, int); struct mbuf *egget(struct eg_softc *, caddr_t, int); void egstop(struct eg_softc *); static __inline void egprintpcb(struct eg_softc *); static int egoutPCB(struct eg_softc *, u_char); static int egreadPCBstat(struct eg_softc *, u_char); static int egreadPCBready(struct eg_softc *); static int egwritePCB(struct eg_softc *); static int egreadPCB(struct eg_softc *); /* * Support stuff */ static __inline void egprintpcb(struct eg_softc *sc) { int i; for (i = 0; i < sc->eg_pcb[1] + 2; i++) DPRINTF(("pcb[%2d] = %x\n", i, sc->eg_pcb[i])); } static int egoutPCB(struct eg_softc *sc, u_char b) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int i; for (i = 0; i < 4000; i++) { if (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_HCRE) { bus_space_write_1(bst, bsh, EG_COMMAND, b); return 0; } delay(10); } DPRINTF(("egoutPCB failed\n")); return (1); } static int egreadPCBstat(struct eg_softc *sc, u_char statb) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int i; for (i=0; i < 5000; i++) { if ((bus_space_read_1(bst, bsh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) break; delay(10); } if ((bus_space_read_1(bst, bsh, EG_STATUS) & EG_PCB_STAT) == statb) return (0); return (1); } static int egreadPCBready(struct eg_softc *sc) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int i; for (i=0; i < 10000; i++) { if (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_ACRF) return (0); delay(5); } DPRINTF(("PCB read not ready status %02x\n", bus_space_read_1(bst, bsh, EG_STATUS))); return (1); } static int egwritePCB(struct eg_softc *sc) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int i; u_char len; bus_space_write_1(bst, bsh, EG_CONTROL, (bus_space_read_1(bst, bsh, EG_CONTROL) & ~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 (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_HCRE) break; delay(10); } bus_space_write_1(bst, bsh, EG_CONTROL, (bus_space_read_1(bst, bsh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_DONE); egoutPCB(sc, len); if (egreadPCBstat(sc, EG_PCB_ACCEPT)) return (1); return (0); } static int egreadPCB(struct eg_softc *sc) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int i; u_char b; bus_space_write_1(bst, bsh, EG_CONTROL, (bus_space_read_1(bst, bsh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_NULL); bzero(sc->eg_pcb, sizeof(sc->eg_pcb)); if (egreadPCBready(sc)) return (1); sc->eg_pcb[0] = bus_space_read_1(bst, bsh, EG_COMMAND); if (egreadPCBready(sc)) return (1); sc->eg_pcb[1] = bus_space_read_1(bst, bsh, EG_COMMAND); if (sc->eg_pcb[1] > 62) { DPRINTF(("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] = bus_space_read_1(bst, bsh, EG_COMMAND); } if (egreadPCBready(sc)) return (1); if (egreadPCBstat(sc, EG_PCB_DONE)) return (1); if ((b = bus_space_read_1(bst, bsh, EG_COMMAND)) != sc->eg_pcb[1] + 2) { DPRINTF(("%d != %d\n", b, sc->eg_pcb[1] + 2)); return (1); } bus_space_write_1(bst, bsh, EG_CONTROL, (bus_space_read_1(bst, bsh, EG_CONTROL) & ~EG_PCB_STAT) | EG_PCB_ACCEPT); return (0); } /* * Real stuff */ int egprobe(struct device *parent, void *match, void *aux) { struct eg_softc *sc = match; struct isa_attach_args *ia = aux; bus_space_tag_t bst = sc->sc_bst = ia->ia_iot; bus_space_handle_t bsh; int i; if ((ia->ia_iobase & ~0x07f0) != 0) { DPRINTF(("Weird iobase %x\n", ia->ia_iobase)); return (0); } if (bus_space_map(bst, ia->ia_iobase, EG_IO_PORTS, 0, &bsh)) { DPRINTF(("%s: can't map i/o space\n", sc->sc_dev.dv_xname)); return (0); } sc->sc_bsh = bsh; /* hard reset card */ bus_space_write_1(bst, bsh, EG_CONTROL, EG_CTL_RESET); bus_space_write_1(bst, bsh, EG_CONTROL, 0); for (i = 0; i < 5000; i++) { delay(1000); if ((bus_space_read_1(bst, bsh, EG_STATUS) & EG_PCB_STAT) == EG_PCB_NULL) break; } if ((bus_space_read_1(bst, bsh, EG_STATUS) & EG_PCB_STAT) != EG_PCB_NULL) { DPRINTF(("eg: Reset failed\n")); goto lose; } sc->eg_pcb[0] = EG_CMD_GETINFO; /* Get Adapter Info */ sc->eg_pcb[1] = 0; if (egwritePCB(sc) != 0) goto lose; if (egreadPCB(sc) != 0) { egprintpcb(sc); goto lose; } if (sc->eg_pcb[0] != EG_RSP_GETINFO || /* Get Adapter Info Response */ sc->eg_pcb[1] != 0x0a) { egprintpcb(sc); goto lose; } 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); ia->ia_iosize = 0x08; ia->ia_msize = 0; bus_space_unmap(bst, bsh, EG_IO_PORTS); return (1); lose: bus_space_unmap(bst, bsh, EG_IO_PORTS); return (0); } void egattach(struct device *parent, struct device *self, void *aux) { struct eg_softc *sc = (void *)self; struct isa_attach_args *ia = aux; bus_space_tag_t bst = sc->sc_bst = ia->ia_iot; bus_space_handle_t bsh; struct ifnet *ifp = &sc->sc_arpcom.ac_if; if (bus_space_map(bst, ia->ia_iobase, EG_IO_PORTS, 0, &bsh)) { printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); return; } sc->sc_bsh = bsh; egstop(sc); sc->eg_pcb[0] = EG_CMD_GETEADDR; /* Get Station address */ sc->eg_pcb[1] = 0; if (egwritePCB(sc) != 0) { DPRINTF(("write error\n")); return; } if (egreadPCB(sc) != 0) { DPRINTF(("read error\n")); egprintpcb(sc); return; } /* check Get station address response */ if (sc->eg_pcb[0] != EG_RSP_GETEADDR || sc->eg_pcb[1] != 0x06) { DPRINTF(("parse error\n")); egprintpcb(sc); return; } bcopy(&sc->eg_pcb[2], sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); printf(": ROM v%d.%02d %dk address %s\n", sc->eg_rom_major, sc->eg_rom_minor, sc->eg_ram, ether_sprintf(sc->sc_arpcom.ac_enaddr)); sc->eg_pcb[0] = EG_CMD_SETEADDR; /* Set station address */ if (egwritePCB(sc) != 0) { DPRINTF(("write error2\n")); return; } if (egreadPCB(sc) != 0) { DPRINTF(("read error2\n")); egprintpcb(sc); return; } if (sc->eg_pcb[0] != EG_RSP_SETEADDR || sc->eg_pcb[1] != 0x02 || sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) { DPRINTF(("parse error2\n")); egprintpcb(sc); return; } /* Initialize ifnet structure. */ bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_softc = sc; ifp->if_start = egstart; ifp->if_ioctl = egioctl; ifp->if_watchdog = egwatchdog; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; /* Now we can attach the interface. */ if_attach(ifp); ether_ifattach(ifp); sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_NET, egintr, sc, sc->sc_dev.dv_xname); } void eginit(register struct eg_softc *sc) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; register struct ifnet *ifp = &sc->sc_arpcom.ac_if; /* soft reset the board */ bus_space_write_1(bst, bsh, EG_CONTROL, EG_CTL_FLSH); delay(100); bus_space_write_1(bst, bsh, EG_CONTROL, EG_CTL_ATTN); delay(100); bus_space_write_1(bst, bsh, EG_CONTROL, 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; if (egwritePCB(sc) != 0) DPRINTF(("write error3\n")); if (egreadPCB(sc) != 0) { DPRINTF(("read error3\n")); egprintpcb(sc); } else if (sc->eg_pcb[2] != 0 || sc->eg_pcb[3] != 0) printf("%s: configure card command failed\n", sc->sc_dev.dv_xname); 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); bus_space_write_1(bst, bsh, EG_CONTROL, EG_CTL_CMDE); sc->eg_incount = 0; egrecv(sc); /* Interface is now `running', with no output active. */ ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); /* Attempt to start output, if any. */ egstart(ifp); } void egrecv(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++; } } void egstart(struct ifnet *ifp) { struct eg_softc *sc = ifp->if_softc; bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; struct mbuf *m0, *m; caddr_t buffer; int len; u_short *ptr; u_int i; /* Don't transmit if interface is busy or not running */ if (!(ifp->if_flags & IFF_RUNNING) || ifq_is_oactive(&ifp->if_snd)) return; loop: /* Dequeue the next datagram. */ m0 = ifq_dequeue(&ifp->if_snd); if (m0 == NULL) return; ifq_set_oactive(&ifp->if_snd); /* 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->if_bpf, m0, BPF_DIRECTION_OUT); #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(("egwritePCB in egstart failed\n")); ifp->if_oerrors++; ifq_clr_oactive(&ifp->if_snd); m_freem(m0); 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; } if (len > m0->m_pkthdr.len) bzero(buffer, len - m0->m_pkthdr.len); /* set direction bit: host -> adapter */ bus_space_write_1(bst, bsh, EG_CONTROL, bus_space_read_1(bst, bsh, EG_CONTROL) & ~EG_CTL_DIR); for (ptr = (u_short *)sc->eg_outbuf; len > 0; len -= 2) { bus_space_write_2(bst, bsh, EG_DATA, *ptr++); for (i = 10000; i != 0; i--) { if (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_HRDY) break; delay(10); } if (i == 0) { printf("%s: start failed\n", sc->sc_dev.dv_xname); break; } } m_freem(m0); } int egintr(void *arg) { struct eg_softc *sc = arg; bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; int ret = 0; int i, len; u_short *ptr; while (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_ACRF) { ret = 1; 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 */ bus_space_write_1(bst, bsh, EG_CONTROL, bus_space_read_1(bst, bsh, EG_CONTROL) | EG_CTL_DIR); for (ptr = (u_short *)sc->eg_inbuf; len > 0; len -= 2) { for (i = 10000; i != 0; i--) { if (bus_space_read_1(bst, bsh, EG_STATUS) & EG_STAT_HRDY) break; delay(10); } if (i == 0) { printf("%s: receive failed\n", sc->sc_dev.dv_xname); break; } *ptr++ = bus_space_read_2(bst, bsh, EG_DATA); } if (len <= 0) { 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(("packet dropped\n")); sc->sc_arpcom.ac_if.if_oerrors++; } sc->sc_arpcom.ac_if.if_collisions += sc->eg_pcb[8] & 0xf; ifq_clr_oactive(&sc->sc_arpcom.ac_if.if_snd); egstart(&sc->sc_arpcom.ac_if); break; case EG_RSP_GETSTATS: DPRINTF(("Card Statistics\n")); bcopy(&sc->eg_pcb[2], &i, sizeof(i)); DPRINTF(("Receive Packets %d\n", i)); bcopy(&sc->eg_pcb[6], &i, sizeof(i)); DPRINTF(("Transmit Packets %d\n", i)); DPRINTF(("CRC errors %d\n", *(short *)&sc->eg_pcb[10])); DPRINTF(("alignment errors %d\n", *(short *)&sc->eg_pcb[12])); DPRINTF(("no resources errors %d\n", *(short *)&sc->eg_pcb[14])); DPRINTF(("overrun errors %d\n", *(short *)&sc->eg_pcb[16])); break; default: DPRINTF(("egintr: Unknown response %x??\n", sc->eg_pcb[0])); egprintpcb(sc); break; } } return (ret); } /* * Pass a packet up to the higher levels. */ void egread(struct eg_softc *sc, caddr_t buf, int len) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mbuf_list ml = MBUF_LIST_INITIALIZER(); struct mbuf *m; if (len <= sizeof(struct ether_header) || len > ETHER_MAX_LEN) { printf("%s: invalid packet size %d; dropping\n", sc->sc_dev.dv_xname, len); ifp->if_ierrors++; return; } /* Pull packet off interface. */ m = egget(sc, buf, len); if (m == NULL) { ifp->if_ierrors++; return; } ml_enqueue(&ml, m); if_input(ifp, &ml); } /* * convert buf into mbufs */ struct mbuf * egget(struct eg_softc *sc, caddr_t buf, int totlen) { struct mbuf *top, **mp, *m; int len; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) return (0); m->m_pkthdr.len = totlen; len = MHLEN; top = 0; mp = ⊤ while (totlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { 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); } int egioctl(register struct ifnet *ifp, u_long cmd, caddr_t data) { struct eg_softc *sc = ifp->if_softc; int s, error = 0; s = splnet(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; eginit(sc); 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; if (egwritePCB(sc) != 0) DPRINTF(("write error\n")); /* * XXX deal with flags changes: * IFF_MULTICAST, IFF_PROMISC, * IFF_LINK0, IFF_LINK1, */ } break; default: error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data); } splx(s); return (error); } void egreset(struct eg_softc *sc) { int s; DPRINTF(("egreset()\n")); s = splnet(); egstop(sc); eginit(sc); splx(s); } void egwatchdog(struct ifnet *ifp) { struct eg_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); sc->sc_arpcom.ac_if.if_oerrors++; egreset(sc); } void egstop(register struct eg_softc *sc) { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_space_write_1(bst, bsh, EG_CONTROL, 0); }