/* $NetBSD: am7990.c,v 1.77.2.1 2018/07/26 23:55:29 snj Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace * Simulation Facility, NASA Ames Research Center. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 FOUNDATION OR CONTRIBUTORS * 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. */ /*- * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Ralph Campbell and Rick Macklem. * * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)if_le.c 8.2 (Berkeley) 11/16/93 */ #include __KERNEL_RCSID(0, "$NetBSD: am7990.c,v 1.77.2.1 2018/07/26 23:55:29 snj Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void am7990_meminit(struct lance_softc *); static void am7990_start(struct ifnet *); #if defined(_KERNEL_OPT) #include "opt_ddb.h" #endif #ifdef LEDEBUG static void am7990_recv_print(struct lance_softc *, int); static void am7990_xmit_print(struct lance_softc *, int); #endif #define ifp (&sc->sc_ethercom.ec_if) void am7990_config(struct am7990_softc *sc) { int mem, i; sc->lsc.sc_meminit = am7990_meminit; sc->lsc.sc_start = am7990_start; lance_config(&sc->lsc); if_deferred_start_init(&sc->lsc.sc_ethercom.ec_if, NULL); mem = 0; sc->lsc.sc_initaddr = mem; mem += sizeof(struct leinit); sc->lsc.sc_rmdaddr = mem; mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf; sc->lsc.sc_tmdaddr = mem; mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf; for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN) sc->lsc.sc_rbufaddr[i] = mem; for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN) sc->lsc.sc_tbufaddr[i] = mem; #ifdef notyet if (mem > ...) panic(...); #endif } /* * Set up the initialization block and the descriptor rings. */ static void am7990_meminit(struct lance_softc *sc) { u_long a; int bix; struct leinit init; struct lermd rmd; struct letmd tmd; uint8_t *myaddr; if (ifp->if_flags & IFF_PROMISC) init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM; else init.init_mode = LE_MODE_NORMAL; if (sc->sc_initmodemedia == 1) init.init_mode |= LE_MODE_PSEL0; /* * Update our private copy of the Ethernet address. * We NEED the copy so we can ensure its alignment! */ memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN); myaddr = sc->sc_enaddr; init.init_padr[0] = (myaddr[1] << 8) | myaddr[0]; init.init_padr[1] = (myaddr[3] << 8) | myaddr[2]; init.init_padr[2] = (myaddr[5] << 8) | myaddr[4]; lance_setladrf(&sc->sc_ethercom, init.init_ladrf); sc->sc_last_rd = 0; sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0; a = sc->sc_addr + LE_RMDADDR(sc, 0); init.init_rdra = a; init.init_rlen = (a >> 16) | ((ffs(sc->sc_nrbuf) - 1) << 13); a = sc->sc_addr + LE_TMDADDR(sc, 0); init.init_tdra = a; init.init_tlen = (a >> 16) | ((ffs(sc->sc_ntbuf) - 1) << 13); (*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init)); /* * Set up receive ring descriptors. */ for (bix = 0; bix < sc->sc_nrbuf; bix++) { a = sc->sc_addr + LE_RBUFADDR(sc, bix); rmd.rmd0 = a; rmd.rmd1_hadr = a >> 16; rmd.rmd1_bits = LE_R1_OWN; rmd.rmd2 = -LEBLEN | LE_XMD2_ONES; rmd.rmd3 = 0; (*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix), sizeof(rmd)); } /* * Set up transmit ring descriptors. */ for (bix = 0; bix < sc->sc_ntbuf; bix++) { a = sc->sc_addr + LE_TBUFADDR(sc, bix); tmd.tmd0 = a; tmd.tmd1_hadr = a >> 16; tmd.tmd1_bits = 0; tmd.tmd2 = 0 | LE_XMD2_ONES; tmd.tmd3 = 0; (*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix), sizeof(tmd)); } } static void am7990_rint(struct lance_softc *sc) { int bix; int rp; struct lermd rmd; bix = sc->sc_last_rd; /* Process all buffers with valid data. */ for (;;) { rp = LE_RMDADDR(sc, bix); (*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd)); if (rmd.rmd1_bits & LE_R1_OWN) break; if (rmd.rmd1_bits & LE_R1_ERR) { if (rmd.rmd1_bits & LE_R1_ENP) { #ifdef LEDEBUG if ((rmd.rmd1_bits & LE_R1_OFLO) == 0) { if (rmd.rmd1_bits & LE_R1_FRAM) printf("%s: framing error\n", device_xname(sc->sc_dev)); if (rmd.rmd1_bits & LE_R1_CRC) printf("%s: crc mismatch\n", device_xname(sc->sc_dev)); } #endif } else { if (rmd.rmd1_bits & LE_R1_OFLO) printf("%s: overflow\n", device_xname(sc->sc_dev)); } if (rmd.rmd1_bits & LE_R1_BUFF) printf("%s: receive buffer error\n", device_xname(sc->sc_dev)); ifp->if_ierrors++; } else if ((rmd.rmd1_bits & (LE_R1_STP | LE_R1_ENP)) != (LE_R1_STP | LE_R1_ENP)) { printf("%s: dropping chained buffer\n", device_xname(sc->sc_dev)); ifp->if_ierrors++; } else { #ifdef LEDEBUG if (sc->sc_debug > 1) am7990_recv_print(sc, sc->sc_last_rd); #endif lance_read(sc, LE_RBUFADDR(sc, bix), (int)rmd.rmd3 - 4); } rmd.rmd1_bits = LE_R1_OWN; rmd.rmd2 = -LEBLEN | LE_XMD2_ONES; rmd.rmd3 = 0; (*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd)); #ifdef LEDEBUG if (sc->sc_debug) printf("sc->sc_last_rd = %x, rmd: " "ladr %04x, hadr %02x, flags %02x, " "bcnt %04x, mcnt %04x\n", sc->sc_last_rd, rmd.rmd0, rmd.rmd1_hadr, rmd.rmd1_bits, rmd.rmd2, rmd.rmd3); #endif if (++bix == sc->sc_nrbuf) bix = 0; } sc->sc_last_rd = bix; } static void am7990_tint(struct lance_softc *sc) { int bix; struct letmd tmd; bix = sc->sc_first_td; for (;;) { if (sc->sc_no_td <= 0) break; (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix), sizeof(tmd)); #ifdef LEDEBUG if (sc->sc_debug) printf("trans tmd: " "ladr %04x, hadr %02x, flags %02x, " "bcnt %04x, mcnt %04x\n", tmd.tmd0, tmd.tmd1_hadr, tmd.tmd1_bits, tmd.tmd2, tmd.tmd3); #endif if (tmd.tmd1_bits & LE_T1_OWN) break; ifp->if_flags &= ~IFF_OACTIVE; if (tmd.tmd1_bits & LE_T1_ERR) { if (tmd.tmd3 & LE_T3_BUFF) printf("%s: transmit buffer error\n", device_xname(sc->sc_dev)); else if (tmd.tmd3 & LE_T3_UFLO) printf("%s: underflow\n", device_xname(sc->sc_dev)); if (tmd.tmd3 & (LE_T3_BUFF | LE_T3_UFLO)) { lance_reset(sc); return; } if (tmd.tmd3 & LE_T3_LCAR) { sc->sc_havecarrier = 0; if (sc->sc_nocarrier) (*sc->sc_nocarrier)(sc); else printf("%s: lost carrier\n", device_xname(sc->sc_dev)); } if (tmd.tmd3 & LE_T3_LCOL) ifp->if_collisions++; if (tmd.tmd3 & LE_T3_RTRY) { #ifdef LEDEBUG printf("%s: excessive collisions, tdr %d\n", device_xname(sc->sc_dev), tmd.tmd3 & LE_T3_TDR_MASK); #endif ifp->if_collisions += 16; } ifp->if_oerrors++; } else { if (tmd.tmd1_bits & LE_T1_ONE) ifp->if_collisions++; else if (tmd.tmd1_bits & LE_T1_MORE) /* Real number is unknown. */ ifp->if_collisions += 2; ifp->if_opackets++; } if (++bix == sc->sc_ntbuf) bix = 0; --sc->sc_no_td; } sc->sc_first_td = bix; if_schedule_deferred_start(ifp); if (sc->sc_no_td == 0) ifp->if_timer = 0; } /* * Controller interrupt. */ int am7990_intr(void *arg) { struct lance_softc *sc = arg; uint16_t isr; isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0; sc->sc_saved_csr0 = 0; #if defined(LEDEBUG) && LEDEBUG > 1 if (sc->sc_debug) printf("%s: am7990_intr entering with isr=%04x\n", device_xname(sc->sc_dev), isr); #endif if ((isr & LE_C0_INTR) == 0) return (0); #ifdef __vax__ /* * DEC needs this write order to the registers, don't know * the results on other arch's. Ragge 991029 */ isr &= ~LE_C0_INEA; (*sc->sc_wrcsr)(sc, LE_CSR0, isr); (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA); #else (*sc->sc_wrcsr)(sc, LE_CSR0, isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR | LE_C0_RINT | LE_C0_TINT | LE_C0_IDON)); #endif if (isr & LE_C0_ERR) { if (isr & LE_C0_BABL) { #ifdef LEDEBUG printf("%s: babble\n", device_xname(sc->sc_dev)); #endif ifp->if_oerrors++; } #if 0 if (isr & LE_C0_CERR) { printf("%s: collision error\n", device_xname(sc->sc_dev)); ifp->if_collisions++; } #endif if (isr & LE_C0_MISS) { #ifdef LEDEBUG printf("%s: missed packet\n", device_xname(sc->sc_dev)); #endif ifp->if_ierrors++; } if (isr & LE_C0_MERR) { printf("%s: memory error\n", device_xname(sc->sc_dev)); lance_reset(sc); return (1); } } if ((isr & LE_C0_RXON) == 0) { printf("%s: receiver disabled\n", device_xname(sc->sc_dev)); ifp->if_ierrors++; lance_reset(sc); return (1); } if ((isr & LE_C0_TXON) == 0) { printf("%s: transmitter disabled\n", device_xname(sc->sc_dev)); ifp->if_oerrors++; lance_reset(sc); return (1); } /* * Pretend we have carrier; if we don't this will be cleared * shortly. */ sc->sc_havecarrier = 1; if (isr & LE_C0_RINT) am7990_rint(sc); if (isr & LE_C0_TINT) am7990_tint(sc); rnd_add_uint32(&sc->rnd_source, isr); return (1); } #undef ifp /* * Setup output on interface. * Get another datagram to send off of the interface queue, and map it to the * interface before starting the output. * Called only at splnet or interrupt level. */ static void am7990_start(struct ifnet *ifp) { struct lance_softc *sc = ifp->if_softc; int bix; struct mbuf *m; struct letmd tmd; int rp; int len; if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) return; bix = sc->sc_last_td; for (;;) { rp = LE_TMDADDR(sc, bix); (*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd)); if (tmd.tmd1_bits & LE_T1_OWN) { ifp->if_flags |= IFF_OACTIVE; printf("missing buffer, no_td = %d, last_td = %d\n", sc->sc_no_td, sc->sc_last_td); } IFQ_DEQUEUE(&ifp->if_snd, m); if (m == 0) break; /* * If BPF is listening on this interface, let it see the packet * before we commit it to the wire. */ bpf_mtap(ifp, m); /* * Copy the mbuf chain into the transmit buffer. */ len = lance_put(sc, LE_TBUFADDR(sc, bix), m); #ifdef LEDEBUG if (len > ETHERMTU + sizeof(struct ether_header)) printf("packet length %d\n", len); #endif ifp->if_timer = 5; /* * Init transmit registers, and set transmit start flag. */ tmd.tmd1_bits = LE_T1_OWN | LE_T1_STP | LE_T1_ENP; tmd.tmd2 = -len | LE_XMD2_ONES; tmd.tmd3 = 0; (*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd)); #ifdef LEDEBUG if (sc->sc_debug > 1) am7990_xmit_print(sc, sc->sc_last_td); #endif (*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD); if (++bix == sc->sc_ntbuf) bix = 0; if (++sc->sc_no_td == sc->sc_ntbuf) { ifp->if_flags |= IFF_OACTIVE; break; } } sc->sc_last_td = bix; } #ifdef LEDEBUG static void am7990_recv_print(struct lance_softc *sc, int no) { struct lermd rmd; uint16_t len; struct ether_header eh; (*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd)); len = rmd.rmd3; printf("%s: receive buffer %d, len = %d\n", device_xname(sc->sc_dev), no, len); printf("%s: status %04x\n", device_xname(sc->sc_dev), (*sc->sc_rdcsr)(sc, LE_CSR0)); printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n", device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1_hadr, rmd.rmd1_bits, rmd.rmd2, rmd.rmd3); if (len >= sizeof(eh)) { (*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh)); printf("%s: dst %s", device_xname(sc->sc_dev), ether_sprintf(eh.ether_dhost)); printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), ntohs(eh.ether_type)); } } static void am7990_xmit_print(struct lance_softc *sc, int no) { struct letmd tmd; uint16_t len; struct ether_header eh; (*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd)); len = -tmd.tmd2; printf("%s: transmit buffer %d, len = %d\n", device_xname(sc->sc_dev), no, len); printf("%s: status %04x\n", device_xname(sc->sc_dev), (*sc->sc_rdcsr)(sc, LE_CSR0)); printf("%s: ladr %04x, hadr %02x, flags %02x, bcnt %04x, mcnt %04x\n", device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1_hadr, tmd.tmd1_bits, tmd.tmd2, tmd.tmd3); if (len >= sizeof(eh)) { (*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh)); printf("%s: dst %s", device_xname(sc->sc_dev), ether_sprintf(eh.ether_dhost)); printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost), ntohs(eh.ether_type)); } } #endif /* LEDEBUG */